WO2018137693A1 - 电动工具控制方法和电动工具 - Google Patents

电动工具控制方法和电动工具 Download PDF

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Publication number
WO2018137693A1
WO2018137693A1 PCT/CN2018/074213 CN2018074213W WO2018137693A1 WO 2018137693 A1 WO2018137693 A1 WO 2018137693A1 CN 2018074213 W CN2018074213 W CN 2018074213W WO 2018137693 A1 WO2018137693 A1 WO 2018137693A1
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WIPO (PCT)
Prior art keywords
battery pack
power tool
power
controller
motor
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Application number
PCT/CN2018/074213
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English (en)
French (fr)
Inventor
张煜
邓强
Original Assignee
苏州宝时得电动工具有限公司
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Publication of WO2018137693A1 publication Critical patent/WO2018137693A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for

Definitions

  • the present invention relates to the field of power tools, and in particular, to a power tool control method and a power tool.
  • Power tools are generally powered by battery packs that make power tools easy to carry.
  • battery packs that make power tools easy to carry.
  • different types of battery packs can be installed on the power tool.
  • the weak battery pack is adapted to the high-power electric tool, and the battery pack temperature is too high, and the over-temperature protection state is entered.
  • the battery pack may have a part of the power that cannot power the power tool, causing waste of electric energy, and the battery pack temperature is excessive. High will affect the life of the battery pack.
  • a power tool control method comprising:
  • the battery pack is mounted on the power tool body
  • the power tool body detects parameters of the battery pack, and identifies a discharge threshold value of the battery pack according to the parameter of the battery pack;
  • a controller in the power tool controls an output power of the power tool according to a discharge threshold of the battery pack.
  • the parameters of the battery pack include parameters reflecting an initial discharge threshold of the battery pack, and the controller in the power tool controls the output power of the power tool according to an initial discharge threshold of the battery pack.
  • the parameter reflecting the initial discharge threshold of the battery pack includes at least one of a model of the battery pack, a manufacturer, a package mode, a capacity, or a discharge rate.
  • the parameter of the battery pack further includes an attenuation characteristic of the battery pack, the attenuation characteristic characterizing the attenuation of the initial discharge threshold value of the battery pack according to the number of cyclic discharges, and the controller in the power tool according to the battery
  • the initial discharge threshold and attenuation characteristics of the package control the output power of the power tool.
  • the discharge threshold of the battery pack is an average discharge current allowed by the battery pack.
  • the discharge threshold of the battery pack is an average output power allowed by the battery pack.
  • the step of the controller in the power tool controlling the output power of the motor of the power tool according to the average discharge current allowed by the battery pack is specifically:
  • the controller in the power tool compares the average discharge current allowed by the battery pack with the current required in the power state of the power tool, and controls the duty ratio of the motor of the power tool according to the comparison result, so that the input of the motor The current is not greater than the current required for the power tool's rated power state.
  • the controller in the power tool compares the average discharge current allowed by the battery pack with the current required in the power state of the power tool, and controls the duty ratio of the motor of the power tool according to the comparison result. Specifically:
  • the controller in the power tool determines whether the average discharge current allowed by the battery pack is less than the current required by the power tool rated power state
  • the controller prohibits outputting a signal with a duty cycle of 100%
  • the controller allows the output of a signal with a 100% duty cycle.
  • the step of the controller in the power tool controlling the output power of the motor of the power tool according to the average output power allowed by the battery pack is specifically:
  • the controller in the power tool compares the average output power allowed by the battery pack with the rated power of the power tool, and controls the duty ratio of the motor of the power tool according to the comparison result, so that the output power of the motor is not greater than the electric power The rated power of the tool.
  • the controller in the power tool compares the average output power allowed by the battery pack with the rated power of the power tool, and the step of controlling the duty ratio of the motor of the power tool according to the comparison result is specifically:
  • the controller in the power tool determines whether the average output power allowed by the battery pack is less than the rated power of the power tool;
  • the controller prohibits outputting a signal with a duty cycle of 100%
  • the controller allows the output of a signal with a 100% duty cycle.
  • the parameter of the battery pack includes power information of the battery pack
  • the controller in the power tool controls the output power of the power tool according to the power information of the battery pack.
  • the power tool includes display means for displaying remaining battery amount information of the battery pack.
  • the display device displays the remaining power of the battery pack to maintain the time for the power tool to work.
  • the step of the power tool body detecting the battery pack and identifying the discharge threshold of the battery pack according to the parameter of the battery pack is specifically: the battery pack will represent a parameter of the battery pack discharge threshold
  • the power tool body is transmitted to the power tool body in a data form, and the power tool body receives data transmitted by the battery pack, and identifies a discharge threshold value of the battery pack according to the received data.
  • the step of detecting the parameter of the battery pack by the power tool body and identifying the discharge threshold value of the battery pack according to the parameter of the battery pack is specifically:
  • the battery pack is provided with a type mark
  • the tool body is provided with a type identification component
  • the type identification component receives a signal sent by the type mark of the battery pack, and identifies the type of the battery pack by the signal and identifies the battery The discharge threshold of the package.
  • a power tool control method includes a power tool body and a battery pack, including the following steps:
  • the power tool body identifies a type of the battery pack, and the type of the battery pack reflects total capacity information of the battery pack;
  • the operating state of the motor of the power tool is controlled according to the type of the battery pack.
  • the user's needs can be more widely adapted.
  • the operating state of the motor is the rotational speed of the motor.
  • the type of the battery pack includes a first capacity battery and a second capacity battery
  • an operating state of the motor includes a first rotation speed and a second rotation speed, when the battery pack is the first capacity battery, The motor speed is the first speed, and when the battery packs the second capacity battery, the motor speed is the second speed.
  • the total battery capacity of the first capacity battery is greater than the total battery capacity of the second capacity battery, and the first rotation speed is greater than the second rotation speed.
  • the step of controlling the working state of the motor of the power tool according to the type of the battery pack it is determined whether it is necessary to control the working state of the motor, and if it is required to control the working state of the motor, the control of the power tool according to the type of the battery pack is performed.
  • the step of operating the motor if it is not necessary to control the operating state of the motor, does not perform the step of controlling the operating state of the motor of the power tool according to the type of the battery pack, and controls the motor to operate under the preset working state.
  • the power tool body identifies a type of the battery pack
  • the step of reflecting the total capacity information of the battery pack is: the battery pack sends a signal to the power tool body, and the power tool body receives the Describe the signal sent by the battery pack and identify the type of the battery pack based on the signal.
  • a power tool includes a power tool body, a battery pack mountable to the power tool body, and a controller, the power tool body including a battery pack type identification device to identify a type of the battery pack, the controller The operating state of the motor of the power tool is controlled according to the type of the battery pack.
  • the user's needs can be more widely adapted.
  • the operating state of the motor is the rotational speed of the motor.
  • the controller may further determine whether to control the working state of the motor before controlling the working state of the motor, and if yes, control the working state of the motor according to the type of the battery pack, and if not, control the motor to be preset. Work under working conditions.
  • the power tool body includes a signal recognition switch
  • the battery pack includes a type mark
  • the type mark sends a signal to the signal recognition switch
  • the signal recognition switch receives the signal and identifies the type mark to identify the type of the battery pack
  • the power tool body is provided with a signal recognition switch, and the signal recognition switch detects different signals of the battery pack to identify the type of the battery pack.
  • a power tool includes a power tool body mountable to a battery pack of the power tool body, the power tool body including a detecting device and a controller, wherein the detecting device is configured to detect a parameter of the battery pack, according to the The parameters of the battery pack identify the discharge threshold of the battery pack, and the controller controls the output power of the power tool according to the discharge threshold of the battery pack.
  • the parameters of the battery pack include parameters reflecting an initial discharge threshold value of the battery pack, and the controller in the power tool controls the output power of the power tool according to an initial discharge threshold value of the battery pack.
  • the parameter reflecting the initial discharge threshold of the battery pack includes at least one of a model of the battery pack, a manufacturer, a package mode, a capacity, or a discharge rate.
  • the parameter of the battery pack further includes an attenuation characteristic of the battery pack, the attenuation characteristic is indicative of a decay of a discharge threshold value of the initial battery pack with a number of cyclic discharges, and the controller in the power tool is according to the initial The discharge threshold and attenuation characteristics of the battery pack control the power output of the power tool.
  • the discharge threshold of the battery pack is an average discharge current allowed by the battery pack.
  • the discharge threshold of the battery pack is an average output power allowed by the battery pack.
  • the controller in the power tool compares the average discharge current allowed by the battery pack with the current required in the power state of the power tool, and controls the duty ratio of the motor of the power tool according to the comparison result, so that The input current of the motor is not greater than the current required by the power tool's rated power.
  • the controller in the power tool compares the average discharge current allowed by the battery pack with the current required by the power tool rated power state, and if the average discharge current allowed by the battery pack is less than the rated power state of the power tool The current of the controller prohibits the output of the signal with a duty cycle of 100%; if the average discharge current allowed by the battery pack is greater than or equal to the current required by the rated power state of the power tool, the controller allows the output duty cycle to be 100%. signal.
  • the controller in the power tool compares the average output power allowed by the battery pack with the rated power of the power tool, and controls the duty ratio of the motor of the power tool according to the comparison result, so that the output power of the motor Not more than the rated power of the power tool.
  • the controller in the power tool compares the average output power allowed by the battery pack with the rated power of the power tool. If the average output power allowed by the battery pack is less than the rated power of the power tool, the controller prohibits the output. A signal with a duty cycle of 100%; if the average output power allowed by the battery pack is greater than or equal to the rated power of the power tool, the controller allows a signal with a duty cycle of 100% to be output.
  • the parameter of the battery pack includes power information of the battery pack, and the controller in the power tool controls the output power of the power tool according to the power amount information of the battery pack.
  • the power tool includes display means for displaying remaining battery amount information of the battery pack.
  • the display device displays the remaining power of the battery pack to maintain the time for the power tool to work.
  • the power tool body includes a communication module, and the battery pack transmits parameters indicating a discharge threshold value of the battery pack to the power tool body through a communication module in a data form, the power tool body receiving the battery
  • the transmitted data is packetized, and the discharge threshold of the battery pack is identified based on the received data.
  • the battery pack includes a type mark
  • the tool body is provided with a type identification component
  • the type identification component receives a signal sent by the type mark of the battery pack, and identifies the type of the battery pack by the signal and Identify the discharge threshold for the battery pack.
  • the invention has the beneficial effects that the invention detects the parameters of the battery pack and identifies the discharge threshold of the battery pack, and the controller controls the output of the power tool according to the discharge threshold of the battery pack.
  • the power makes the power tool adaptable to different types of battery packs, which improves the general-purpose type of the power tool, and avoids the battery pack with a low discharge capacity when it is installed in a battery pack with a large rated power.
  • the temperature protection state causes the power of the battery pack not to provide kinetic energy for the power tool, resulting in waste of power and affecting the life of the battery pack.
  • FIG. 1 is a flow chart of a first embodiment of a method for controlling a power tool according to the present invention
  • FIG. 2 is a flow chart of a second embodiment of a method for controlling a power tool according to the present invention
  • FIG. 3 is a flow chart of a third embodiment of a method for controlling a power tool according to the present invention.
  • FIG. 4 is a schematic structural view of a first embodiment of a power tool according to the present invention.
  • Figure 5 is a schematic view showing the structure of a second embodiment of the electric power tool of the present invention.
  • a power tool control method includes the following steps:
  • the power tool body detects a parameter of the battery pack, and identifies a discharge threshold value of the battery pack according to the parameter of the battery pack;
  • the parameters of the battery pack include factory parameters of the battery pack, and the factory parameters of the battery pack reflect the discharge threshold of the initial battery pack or the initial discharge threshold of the battery pack, and the factory parameters of the battery pack include the model of the battery pack. , manufacturer, factory time, package mode, capacity, initial internal resistance and discharge rate and other parameters, the user can know the discharge threshold of the battery pack through the model and manufacturer of the battery pack, the user can pass the battery pack model and package
  • the method knows the discharge threshold of the battery pack, and the user can also directly understand the discharge threshold of the battery pack by the discharge rate of the battery pack, that is, the user can know the discharge gate of the battery pack through a combination of one or more of the above parameters. Limit.
  • the discharge threshold of the battery pack may decrease, or the battery pack may be stored for a period of time, and the discharge threshold of the battery pack may also decrease, so the battery pack parameters of the present invention are It also includes the attenuation characteristics of the battery pack, including the number of cycles of battery pack discharge, storage time, internal resistance change, etc.
  • the power tool controller can calculate the battery according to the initial parameters and attenuation characteristics of the battery pack. The actual discharge threshold of the package.
  • the discharge threshold of the battery pack is an average discharge current allowed by the battery pack
  • the average discharge current allowed by the battery pack refers to a maximum average discharge current that satisfies the life of the battery pack, that is, The maximum average discharge current allowed under the premise of ensuring the life of the battery pack.
  • the controller in the power tool controls the output power of the motor of the power tool according to the discharge threshold of the battery pack.
  • the method of the controller controlling the output power of the motor includes adjusting the duty cycle of the power tool to control the output power of the motor.
  • the discharge threshold of the battery pack is identified by detecting the parameters of the battery pack, and the output power of the motor is controlled according to the discharge threshold of the battery pack, and the discharge threshold of the battery pack is reflected by the battery pack.
  • the magnitude of the average discharge current specifically, the parameters of the power tool body detecting the battery pack, including the above parameters indicating the initial discharge threshold of the battery pack and the parameters indicating the actual discharge threshold of the battery pack according to the attenuation characteristics of the battery pack.
  • the power tool controller identifies the average discharge current allowed by the battery pack according to the parameter indicating the initial discharge threshold value of the battery pack or the actual discharge threshold value, and the controller controls the output power of the power tool according to the discharge current of the battery pack.
  • the controller of the power tool compares the average discharge current allowed by the battery pack with the current required by the power tool rated power state, and controls the duty ratio of the motor of the power tool according to the comparison result, so that the input current of the motor is not Greater than the current required by the power tool.
  • the input current of the motor is not greater than the average discharge current allowed by the battery pack, and the specific steps are shown in FIG. 2 .
  • a power tool control method includes the following steps.
  • the power tool body detects the parameters of the battery pack, and obtains the average discharge current allowed by the battery pack.
  • step S310 The controller in the power tool determines whether the average discharge current allowed by the battery pack is less than the current required in the power state of the power tool. If yes, step S320 is performed, and if no, step S330 is performed.
  • S320 The controller prohibits outputting a signal with a duty ratio of 100%. That is, the controller reduces the duty cycle so that the input current of the motor is less than the current required by the rated power of the motor. Preferably, the input current of the motor is not greater than the average discharge current allowed by the battery pack.
  • the controller when the average discharge current allowed by the battery pack is less than the current required by the power tool rated power state, in order to adapt the battery pack to the tool body without affecting the service life of the battery pack, it needs to be adjusted by the controller.
  • the input current of the motor makes the input current of the motor less than the current required by the rated power state of the power tool.
  • the controller can disable the output of the duty cycle of 100% to the motor drive switch by adjusting the duty cycle. The current drops so that the power output of the power tool is lower than the power required by the tool.
  • the signal output by the controller that the duty ratio is not 100% is the drive switch of the motor, so that the current of the motor is slightly higher than the average discharge current allowed by the battery pack and less than the current required by the rated power of the tool.
  • the rated current of the power tool requires 20A, that is, the rated current is 20A.
  • the power tool body detects that the average discharge current allowed by the battery pack is 15A, and the controller judges.
  • the average discharge current allowed by the battery pack is less than 20A of the rated current of the tool.
  • the controller adjusts the duty ratio according to the actual working conditions or the comfort of the operation, so that the input current of the motor is 16A or 17A. It can not only make the battery pack pass through the tool, but also ensure a certain working efficiency.
  • the signal whose controller output duty ratio is not 100% is the drive switch of the motor, so that the current of the motor is not higher than the average discharge current allowed by the battery pack.
  • the rated current of the power tool requires 20A, that is, the rated current is 20A.
  • the power tool body detects that the average discharge current allowed by the reaction battery pack is 15A.
  • the average discharge current allowed by the battery pack is less than 20A of the rated current of the tool.
  • the controller adjusts the duty ratio according to the actual working conditions or the comfort of the operation, so that the input current of the motor is 15A or less. It can not only make the battery pack pass through the tool, but also prevent the battery pack from working at a high current to affect the service life of the battery pack.
  • the controller allows the output of a signal with a duty cycle of 100%. That is, when the battery pack is mounted on the power tool, if the average discharge current allowed by the battery pack is greater than or equal to the current required by the power tool rated power state, the controller can output a signal with a duty ratio of 100% to control the drive switch of the motor. In actual work, the controller can output a signal with a duty cycle of 100% according to the working condition, and in some operating conditions, it can also output a signal control motor driving switch with a duty ratio of less than 100%. That is, the specific value of the duty cycle can be adjusted as needed.
  • the current required by the power tool is 20A, that is, the rated current is 20A.
  • the power tool body detects the reaction battery pack discharge threshold.
  • the parameter of the value specifically, the power tool body detects parameters that characterize the initial discharge threshold of the battery pack, such as the model of the battery pack, the manufacturer, the factory time, the package mode, the capacity, the initial internal resistance, and the discharge rate, etc.
  • the average discharge current allowed by the battery pack for example, the average discharge current allowed by the battery pack is 15A.
  • the controller determines that the average discharge current allowed by the battery pack is less than 20A of the rated current of the tool. If no measures are taken, the motor of the power tool is used.
  • the input current is still 20A, which will reduce the life of the battery pack, which is not conducive to the versatility of the battery pack or the tool.
  • the controller adjusts the duty ratio, and the controller outputs a signal with a duty ratio of not 100% to the motor.
  • the drive switch, the specific duty cycle value can be determined according to the actual operation effect, so that the input current of the motor is smaller than the motor
  • the rated current is 20A.
  • the input current of the motor can be 14A, 15A, 16A, etc., which improves the general type of the battery pack to the motor.
  • the input current of the motor can be less than the average discharge current allowed by the initial battery pack by 15A.
  • the life of the battery pack is impaired and can also be slightly higher than the average discharge current allowed by the actual battery pack by 15A for higher efficiency or operational comfort.
  • the current required for the power tool is 20A, that is, the rated current is 20A.
  • the power tool body detects the reaction battery pack discharge door.
  • the parameter of the limit value specifically, the power tool body detects parameters that characterize the initial discharge threshold of the battery pack, such as the model of the battery pack, the manufacturer, the factory time, the package mode, the capacity, the initial internal resistance, and the discharge rate.
  • the actual discharge threshold value of the battery pack is obtained, for example, according to the characterization
  • the parameters of the initial discharge threshold are obtained.
  • the initial battery pack allows the average discharge current to be 15A. After attenuation, the actual discharge current of the battery pack is 13A, which is less than the rated current of the tool by 20A. If no measures are taken, the input of the motor of the power tool is made. The current is still 20A, which will reduce the life of the battery pack, which is not conducive to the versatility of the battery pack or tool.
  • the controller adjusts the duty ratio, and the controller outputs a signal whose duty ratio is not 100% to the driving switch of the motor, and the specific duty value can be determined according to the actual operation result, so that the input current of the motor is smaller than the motor rated
  • the current is 20A.
  • the input current of the motor can be 12A, 13A, 14A, etc., which improves the general type of the battery pack to the motor.
  • the input current of the motor can be less than the average discharge current allowed by the actual battery pack by 13A, preventing the battery.
  • the life of the package is impaired and can also be slightly higher than the average discharge current allowed by the actual battery pack of 13A for higher efficiency or operational comfort.
  • the controller when the controller determines that the average discharge current allowed by the battery pack is greater than or equal to the rated current of the tool, it indicates that the discharge threshold of the battery pack is very strong, and the operation duty of the power tool is satisfied, and the controller allows the output duty ratio to be 100% of the signal to the drive switch of the motor, that is, under certain operating conditions, the controller outputs a signal with a duty cycle of 100% to the drive switch of the motor. In some disclosures, the controller may output a duty cycle of less than 100. %signal of.
  • the discharge threshold of the battery pack is identified by detecting the parameter of the battery pack, and the output power of the power tool is controlled according to the discharge threshold of the battery pack, so that the compatibility between the power tool and the battery pack is higher, and the compatibility is improved.
  • Battery pack is a general-purpose type of power tool. The average discharge current allowed by the battery pack is compared with the rated current of the power tool to control the output power of the power tool. When the battery pack with a small discharge current is installed, the battery pack is installed at a current tool with a large rated current.
  • the temperature of the battery pack caused by the battery operation required by the tool is too high to enter the over-temperature protection state, so that the power of the battery pack cannot all provide kinetic energy for the power tool, resulting in waste of electric energy and affecting the life of the battery pack.
  • the discharge threshold of the battery pack is represented by the average discharge current allowed by the battery pack.
  • the discharge threshold of the battery pack is the average output power allowed by the battery pack, and specific The power required by the power tool is 800W.
  • the power tool body detects the parameter of the discharge threshold of the reaction battery pack. Specifically, the parameter that characterizes the initial discharge threshold of the battery pack or The attenuated parameter identifies the discharge threshold of the battery pack according to the detected parameter. For example, the average discharge power of the battery pack is identified as 600 W.
  • the controller determines that the discharge power of the battery pack is less than the power required by the tool, and the controller adjusts the duty ratio.
  • the controller outputs a signal whose duty ratio is not 100%, and specifically reduces the duty value according to the actual working condition, so that the output power of the motor is less than the power required by the motor 800W, so as to prevent the life of the battery pack from being damaged, so that the battery
  • the package is more versatile for the motor.
  • the output power of the motor can be less than the average discharge power allowed by the battery pack of 600W, which prevents the life of the battery pack from being damaged. It can also be slightly higher than the average discharge power of the actual battery pack by 600W for higher efficiency or operational comfort.
  • the controller determines that the discharge power of the battery pack is not less than the power required by the tool, indicating that the discharge threshold of the battery pack is very strong, meeting the needs of the work of the power tool, and the controller allows the output.
  • the signal with a duty cycle of 100%, the specific duty cycle value can be determined according to the actual working conditions, so that the motor works with the power required by the power tool 800W.
  • the specific method for detecting the average discharge power allowed by the battery pack in the above embodiment includes detecting parameters that characterize the average allowable discharge power of the battery pack, such as detecting the model of the battery pack, the manufacturer, the factory time, the package mode, the capacity, and the initial Blocking the discharge rate and other parameters to obtain the average discharge power allowed by the battery pack; in another method, the power tool body detects parameters that characterize the initial allowable discharge power of the battery pack, such as detecting the model, manufacturer, and delivery time of the battery pack.
  • the parameters such as the package mode, capacity, initial internal resistance and discharge rate are measured, and the parameters characterizing the attenuation characteristics of the battery pack are detected, and the actual allowable average discharge power of the battery pack is obtained.
  • the invention detects the parameter of the battery pack, identifies the discharge threshold of the battery pack and controls the output power of the power tool according to the discharge threshold of the battery pack, so that the power tool can adapt different types of battery packs, thereby improving the power tool.
  • the universal type compares the discharge threshold of the battery pack with the power or discharge current required by the power tool to control the output power of the power tool, and avoids when the battery pack with a weak discharge threshold is installed on the tool body with a large power or current.
  • the temperature of the battery pack is too high to enter the over-temperature protection state, so that the power of the battery pack cannot all provide kinetic energy for the power tool, resulting in waste of electric energy and affecting the life of the battery pack.
  • control method of the power tool of the present invention further includes the steps of:
  • the display device in the power tool displays the battery pack's power information.
  • the power tool is provided with a power display device for displaying remaining battery information of the battery pack.
  • the controller in the power tool can also calculate the battery pack life time according to the battery pack power information, and display the battery through the display device. At least one of the battery capacity and battery life.
  • the battery pack will parameterize the battery pack discharge threshold, such as a parameter characterizing the average discharge current allowed by the battery pack or the average discharge power allowed by the battery pack, and transmitting the data to the power tool through the communication module in data form.
  • the body, the power tool body receives the data transmitted by the battery pack, and identifies a discharge threshold of the battery pack according to the received data, thereby controlling the output power of the power tool.
  • the power tool body includes a type identification component, specifically a signal recognition switch
  • the battery pack includes a type mark
  • the type mark sends a signal to the signal recognition switch
  • the signal recognition switch receives the signal, and identifies the type mark to identify The type of battery pack.
  • the type mark may be a two-dimensional code or a radio frequency identification code marked on the battery pack
  • the signal recognition switch identifies the type of the battery pack by directly scanning or sensing the two-dimensional code or the radio frequency identification code. It can be understood that there is no mark on the battery pack, and the power tool body is provided with a signal recognition switch, and the signal recognition switch detects different signals of the battery pack to identify the type of the battery pack.
  • the signal of the battery pack may be an internal resistance of the battery pack, an open circuit voltage of the battery pack, or the like.
  • the power tool has a storage unit therein, and the storage unit stores a management mode of various battery packs, and the management mode of the battery pack may specifically include a parameter reflecting the discharge threshold of the battery pack. And the discharge rate of the battery pack corresponding to the parameter one by one, wherein the parameter reflecting the discharge threshold of the battery pack includes the model of the battery pack, the manufacturer, the package mode, the number of cycles and the like, and the controller according to the battery pack.
  • the management mode obtains the battery pack discharge rate, that is, the battery pack discharge current, and the controller compares the current required by the battery pack discharge current and the tool rated power state, and adjusts the duty ratio to control the output power of the tool.
  • the present invention can detect the parameters reflecting the discharge threshold of the battery pack, directly obtain the output power of the motor, and control the motor, that is, the battery pack type can be identified by the detected battery pack parameters in the prior art.
  • the methods are all within the scope of the embodiments of the present invention and will not be described in detail herein.
  • the power tool body identifies the type of the battery pack, and the type of the battery pack reflects the total capacity information of the battery pack;
  • S150 Control the working state of the motor of the power tool according to the type of the battery pack.
  • the operating state of the motor includes, but is not limited to, the rotational speed of the motor.
  • the power tool control method by identifying the type of the battery pack and controlling the working state of the motor according to the type of the battery pack, the user's needs can be more widely adapted. For example, when the battery capacity of the battery pack is recognized to be large, the motor can be controlled to increase the rotational speed, thereby improving the power of the power tool, improving the work efficiency, and adapting to more working conditions to meet more needs of the user.
  • the type of the battery pack includes a first capacity battery and a second capacity battery
  • the working state of the motor includes a first rotation speed and a second rotation speed.
  • the motor The rotation speed is the first rotation speed
  • the motor rotation speed is the second rotation speed.
  • the total battery capacity of the first capacity battery is greater than the total battery capacity of the second capacity battery
  • the first rotation speed is greater than the second rotation speed.
  • the battery pack has a total capacity of 2Ah, the working efficiency is 4 square meters / minute, the single battery pack can work for 15 minutes, the battery pack has a total capacity of 3Ah, and the working efficiency is 5 square meters / minute.
  • the single battery pack can work for 18 minutes, the battery pack has a total capacity of 4Ah, the working efficiency is 6 square meters per minute, and the single battery pack can work for 20 minutes.
  • the power tool control method further includes the steps of:
  • step S120 before step S150, it is determined whether it is necessary to control the working state of the motor. If it is necessary to control the working state of the motor, step S150 is performed. If the working state of the motor is not required to be controlled, step S150 is not executed, and the motor is controlled under the preset working state. jobs. Under some working conditions, it is not necessary to control the working state of the motor to adjust the power of the power tool, and the working state of the motor can be adjusted. Thus, the single battery pack can allow the power tool to work continuously for a longer period of time, so that the power tool can be operated according to the actual situation. Adapt to more working conditions. It can be understood that step S120 can be performed before step S130, or can be performed before step S150.
  • step S130 is specifically: the battery pack sends a signal to the power tool body, the power tool body receives the signal sent by the battery pack, and identifies the type of the battery pack according to the signal.
  • the power tool body includes a signal recognition switch
  • the battery pack includes a type mark
  • the type mark sends a signal to the signal recognition switch
  • the signal recognition switch receives the signal and identifies the type mark to identify the type of the battery pack.
  • the type mark may be a two-dimensional code or a radio frequency identification code marked on the battery pack
  • the signal recognition switch identifies the type of the battery pack by directly scanning or sensing the two-dimensional code or the radio frequency identification code. It can be understood that there is no mark on the battery pack, and the power tool body is provided with a signal recognition switch, and the signal recognition switch detects different signals of the battery pack to identify the type of the battery pack.
  • the signal of the battery pack may be an internal resistance of the battery pack, an open circuit voltage of the battery pack, or the like.
  • a schematic diagram of the results of a first embodiment of the power tool according to the present invention includes a power tool body 210, a battery pack 230 mountable to the power tool body 210, and an electric motor.
  • the tool body 210 includes a detecting device 240 and a controller 250.
  • the detecting device 240 detects a parameter of the battery pack 230, the parameter reflects a discharge threshold value of the battery pack 230, and the controller 250 controls the power tool according to the discharge threshold value of the battery pack 230.
  • the working state of the motor Specifically, the operating state of the motor includes the output power of the motor.
  • the parameters of the battery pack 230 include the factory parameters of the battery pack 230
  • the factory parameters of the battery pack 230 reflect the initial discharge threshold of the battery pack 230
  • the factory parameters of the battery pack 230 include the model and manufacturer of the battery pack 230.
  • the parameters such as the package mode, capacity, initial internal resistance and discharge rate, the user can know the discharge threshold of the battery pack 230 by the model and manufacturer of the battery pack 230, and the user can know the battery by the model and package of the battery pack 230.
  • the discharge threshold of the package 230 the user can also directly know the discharge threshold of the battery pack 230 by the discharge rate of the battery pack 230, that is, the user can know the discharge of the battery pack 230 by a combination of one or more of the above parameters.
  • the battery pack 230 parameter of the present invention further includes the attenuation characteristic of the battery pack 230, including the number of times the battery pack 230 is cyclically discharged.
  • the power tool controller 250 can calculate the current discharge threshold value of the battery pack 230 according to the initial parameters and the attenuation characteristics of the battery pack 230.
  • the parameter of the battery pack 230 is detected by the detecting device 240 in the power tool body 210, and the discharge threshold value of the battery pack 230 is identified, and the controller 250 controls the working state of the motor according to the discharge threshold value of the battery pack 230.
  • the operating state of the battery pack 230 is the output power of the motor.
  • the method for controlling the motor output power by the specific controller 250 includes adjusting the duty ratio of the power tool to control the output power of the motor.
  • the detecting device 240 detects the parameters of the battery pack 230, identifies the discharge threshold value of the battery pack 230, and the controller 250 controls the operating state of the motor according to the discharge threshold value of the battery pack 230, and discharges the battery pack 230.
  • the threshold value is expressed as indicating the average discharge current allowed by the battery pack.
  • the power tool body 210 detects the parameters of the battery pack 230, including parameters indicating the initial discharge threshold value of the battery pack 230 and the attenuation characteristics according to the battery pack 230.
  • the power tool controller 250 identifies the average discharge current allowed by the battery pack based on the parameter of the initial discharge threshold value of the battery pack 230 or the parameter of the actual discharge threshold value, and the controller 250 The power output of the power tool is controlled according to the average discharge current allowed by the battery pack.
  • the controller 250 of the power tool compares the average discharge current allowed by the battery pack with the current required by the power tool rated power state, and controls the duty ratio of the motor of the power tool according to the comparison result, so that the input current of the motor Not more than the current required in the rated power state of the power tool.
  • the average discharge current allowed by the battery pack referred to in the present invention is the maximum average discharge current that satisfies the life of the battery pack, that is, the maximum average discharge current of the battery pack 230 under the premise of ensuring the life of the battery pack.
  • the controller 250 when the average discharge current allowed by the battery pack is less than the current required in the rated power state of the electrician tool, in order to adapt the battery pack 230 to the power tool body 210 without affecting the service life of the battery pack 230, It is necessary to adjust the input current of the motor through the controller 250 so that the input current of the motor is less than the current required in the rated power state of the tool.
  • the input current of the motor is not greater than the average discharge current allowed by the battery pack, and the duty can be adjusted by adjusting the duty.
  • the controller 250 outputs a signal whose duty ratio is not 100% to the drive switch of the motor, causing the current of the motor to drop, so that the output power of the tool is lower than the power required by the tool.
  • the utility model can not only pass the battery pack 230 to the tool, but also prevent the high current operation of the battery pack 230 from affecting the service life of the battery pack 230.
  • the specific adjustment value of the duty ratio can be determined according to the comfort or working condition of the user operation.
  • the discharge threshold of the battery pack 230 is sufficient, and the tool can be operated at a duty ratio of 100% so that the input current of the motor is equal to The current required at the rated power of the motor, the tool operates at the required power. If the speed needs to be controlled later, the duty ratio can also be adjusted to be less than 100%, that is, in the present force, when the average discharge current allowed by the battery pack is greater than or equal to the current required in the tool rated power state, the controller 250 allows the output duty. The ratio is 100% of the signal, which can be adjusted as needed.
  • the discharge threshold of the battery pack 230 in the above embodiment is represented by the average discharge current allowed by the battery pack. As will be appreciated by those skilled in the art, the discharge threshold of the battery pack 230 can also be reflected by the average discharge power allowed by the battery pack. I will not elaborate on them here.
  • the detecting device 240 specifically includes a type identifying component (not shown) to identify the type of the battery pack 230.
  • the specific identifying component is provided on the power tool body 210.
  • the signal recognition switch, the battery pack 230 includes a type mark, the type mark transmits a signal to the signal recognition switch, the signal recognition switch receives the signal and identifies the type mark to identify the type of the battery pack 230, and specifically identifies the discharge threshold value of the battery pack 230.
  • the type tag may be a two-dimensional code or a radio frequency identification code tagged on the battery pack 230
  • the signal recognition switch identifies the type of the battery pack 230 by directly scanning or inducing a two-dimensional code or a radio frequency identification code. It can be understood that no marking may be provided on the battery pack 230.
  • the power tool body 210 is provided with a signal recognition switch, and the signal recognition switch detects different signals of the battery pack 230 to identify the type of the battery pack 230.
  • the signal of the battery pack 230 may be an internal resistance of the battery pack 230, an open circuit voltage of the battery pack 230, or the like.
  • the battery pack 230 when the battery pack 230 is properly mounted to the power tool body 210, the battery pack 230 transmits parameters indicative of the battery pack discharge threshold value to the power tool body 210 through the communication module 260 in data form.
  • the controller 250 in the power tool body 210 identifies the discharge threshold of the battery pack 230 based on the data received by the communication module 260, and then controls the output power of the power tool.
  • the power tool has a storage unit therein, and the storage unit stores a management mode of various battery packs 230.
  • the management mode of the battery pack 230 may specifically include reflecting the discharge threshold of the battery pack 230.
  • the parameter of the value, and the discharge rate of the battery pack 230 corresponding to the parameter one by one, wherein the parameter reflecting the discharge threshold of the battery pack 230 includes the model of the battery pack 230, the manufacturer, the package mode, the number of cycles and the like, and the like.
  • the controller 250 obtains the discharge rate of the battery pack 230, that is, the discharge current of the battery pack 230 according to the management mode of the battery pack 230.
  • the controller 250 in the tool compares the discharge current of the battery pack 230 with the current required by the rated power state of the tool, and adjusts the duty. Than, control the output power of the tool.
  • the battery pack 230 parameter further includes power amount information of the battery pack 230
  • the controller 250 in the power tool controls the output power of the power tool according to the power amount information of the battery pack 230.
  • the power tool of the present invention further includes display means for displaying remaining battery information of the battery pack 230.
  • the controller 250 in the power tool can also calculate the battery pack 230 life time based on the battery information of the battery pack 230, and display the battery pack through the display device. At least one of 230 power and battery life.
  • the present invention also provides a power tool.
  • a schematic diagram of the result of the second embodiment of the power tool of the present invention is shown.
  • the power tool includes a power tool body 210 and a battery pack 230 mountable to the power tool body 210.
  • the controller 250 the power tool body 210 includes a battery pack type identifying device to identify the type of the battery pack 230, and the controller 250 controls the operating state of the motor of the power tool according to the type of the battery pack 230.
  • the operating state of the motor includes, but is not limited to, the rotational speed of the motor.
  • the type of the battery pack is identified, and the working state of the motor is controlled according to the type of the battery pack, which can be more widely adapted to the needs of the user. For example, when the battery capacity of the battery pack is recognized to be large, the motor can be controlled to increase the rotational speed, thereby improving the power of the power tool, improving the work efficiency, and adapting to more working conditions to meet more needs of the user.
  • the type of the battery pack includes a first capacity battery and a second capacity battery
  • the working state of the motor includes a first rotation speed and a second rotation speed.
  • the motor The rotation speed is the first rotation speed
  • the motor rotation speed is the second rotation speed.
  • the total battery capacity of the first capacity battery is greater than the total battery capacity of the second capacity battery
  • the first rotation speed is greater than the second rotation speed.
  • the battery pack has a total capacity of 2Ah, the working efficiency is 4 square meters / minute, the single battery pack can work for 15 minutes, the battery pack has a total capacity of 3Ah, and the working efficiency is 5 square meters / minute.
  • the single battery pack can work for 18 minutes, the battery pack has a total capacity of 4Ah, the working efficiency is 6 square meters per minute, and the single battery pack can work for 20 minutes.
  • the controller 250 can also determine whether to control the working state of the motor before controlling the working state of the motor, and if so, control the working state of the motor according to the type of the battery pack, and if not, control the motor to work in the preset state.
  • the preset operating state may be that the motor rotates at a predetermined rotational speed.
  • the predetermined rotational speed is the lowest rotational speed of the motor.
  • the single battery pack can allow the power tool to work continuously for a longer period of time, so that the power tool can be operated according to the actual situation. Adapt to more working conditions.
  • the power tool body 210 includes a signal recognition switch
  • the battery pack includes a type mark
  • the type mark sends a signal to the signal recognition switch
  • the signal recognition switch receives the signal and identifies the type mark to identify the type of the battery pack.
  • the type mark may be a two-dimensional code or a radio frequency identification code marked on the battery pack
  • the signal recognition switch identifies the type of the battery pack by directly scanning or sensing the two-dimensional code or the radio frequency identification code. It can be understood that no marking is provided on the battery pack, and the power tool body 210 is provided with a signal recognition switch, and the signal recognition switch detects different signals of the battery pack to identify the type of the battery pack.
  • the signal of the battery pack may be an internal resistance of the battery pack, an open circuit voltage of the battery pack, or the like.
  • the tool body detects the discharge threshold of the battery pack, and specifically includes the type of the battery pack, the power amount information, and other parameters that reflect the discharge threshold of the battery pack, and controls the motor according to the discharge threshold of the battery pack.
  • the working state makes a power tool adaptable to a variety of battery packs, which improves the versatility of the power tool, and avoids the temperature of the battery pack when the battery pack with a weak discharge threshold is installed in a battery pack with a large rated power. Too high to enter the over-temperature protection state, the power of the battery pack can not all provide kinetic energy for the power tool, resulting in waste of electrical energy and affecting the life of the battery pack.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Portable Power Tools In General (AREA)

Abstract

一种电动工具控制方法和电动工具控制装置,电动工具包括电动工具本体和电池包,电动工具控制方法包括以下步骤:将电池包安装于电动工具本体;电动工具本体识别电池包的类型,电池包的类型反映电池包的总容量信息;根据电池包的类型控制电动工具的电机的工作状态。本电动工具控制方法中,通过识别电池包的类型,并根据电池包的类型控制电机的工作状态,可更为广泛地适应使用者的需求。电动工具控制装置包括电动工具本体、可安装于电动工具本体的电池包和控制器,电动工具本体包括电池包类型识别装置,以识别电池包的类型,控制器根据电池包的类型控制电动工具的电机的工作状态。

Description

电动工具控制方法和电动工具 技术领域
本发明涉及电动工具技术领域,特别涉及一种电动工具控制方法及电动工具。
背景技术
目前,电动工具的应用十分广泛,例如割草机、钻机、砂光机等,电动工具的应用大大提高了人们的工作效率和工作舒适性、方便性。电动工具普遍采用电池包提供动力,使电动工具便于携带。为提高电动工具的通用性,最好是不同类型的电池包均可安装于电动工具,现有技术中,不同类型的电池包安装于电动工具时,由于电池包的放电能力不同,当放电能力弱的电池包适配于大功率的电动工具,会出现电池包温度过高,进入过温保护状态,电池包会有一部分电量无法为电动工具提供动力,造成电能的浪费,且电池包温度过高会影响电池包的寿命。
因此,有必要提供一种电动工具,可适配不同类型的电池包,提高电池包的通用型。
发明内容
基于此,有必要提供一种可识别电池包类型并据此控制电动工具工作状态的电动工具控制方法。
还有必要提供一种电动工具。
一种电动工具控制方法,所述电动工具控制方法包括:
电池包安装于电动工具本体;
所述电动工具本体检测所述电池包的参数,根据所述电池包的参数识别电池包的放电门限值;
所述电动工具中的控制器根据所述电池包的放电门限值控制所述电动工具的输出功率。
优选的,所述电池包的参数包括反映电池包初始放电门限值的参数,所述电动工具中的控制器根据所述电池包的初始放电门限值控制电动工具的输 出功率。
优选的,所述反映电池包的初始放电门限值的参数包括电池包的型号,厂商,组包方式、容量或放电倍率中至少一种。
优选的,所述电池包的参数还包括电池包的衰减特性,所述衰减特性表征电池包的初始放电门限值随循环放电次数的衰减情况,所述电动工具中的控制器根据所述电池包的初始放电门限值和衰减特性来控制电动工具的输出功率。
优选的,所述电池包的放电门限值为电池包允许的平均放电电流。
优选的,所述电池包的放电门限值为电池包允许的平均输出功率。
优选的,所述电动工具中的控制器根据所述电池包允许的平均放电电流控制所述电动工具的电机的输出功率的步骤具体为:
所述电动工具中的控制器将所述电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输入电流不大于电动工具额定功率状态下需要的电流。
优选的,所述电动工具中的控制器将所述电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,根据比较结果控制所述电动工具的电机的占空比的步骤具体为:
电动工具中的控制器判断电池包允许的平均放电电流是否小于电动工具额定功率状态下需要的电流;
若是,则控制器禁止输出占空比为100%的信号;
若否,则控制器允许输出占空比为100%的信号。
优选的,所述电动工具中的控制器根据所述电池包允许的平均输出功率控制所述电动工具的电机的输出功率的步骤具体为:
所述电动工具中的控制器将所述电池包允许的平均输出功率与电动工具的额定功率进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输出功率不大于电动工具的额定功率。
优选的,所述电动工具中的控制器将所述电池包允许的平均输出功率与电动工具的额定功率进行比较,根据比较结果控制所述电动工具的电机的占空比的步骤具体为:
电动工具中的控制器判断电池包允许的平均输出功率是否小于电动工具 的额定功率;
若是,则控制器禁止输出占空比为100%的信号;
若否,则控制器允许输出占空比为100%的信号。
优选的,所述电池包的参数包括电池包的电量信息,所述电动工具中的控制器根据所述电池包的电量信息控制电动工具的输出功率。
优选的,所述电动工具包括显示装置,用于显示电池包的剩余电量信息。
优选的,所述显示装置显示电池包的剩余电量可维持电动工具工作的时间。
优选的,所述电动工具本体检测所述电池包的参数,根据所述电池包的参数识别电池包的放电门限值的步骤具体为:所述电池包将表征电池包放电门限值的参数以数据形式通过通信模块传输给所述电动工具本体,所述电动工具本体接收所述电池包传输的数据,并根据接收的所述数据识别所述电池包的放电门限值。
优选的,所述电动工具本体检测所述电池包的参数,根据所述电池包的参数识别电池包的放电门限值的步骤具体为:
所述电池包设置有类型标记,所述工具本体内设置有类型识别组件,所述类型识别组件接收所述电池包的类型标记发送的信号,并通过所述信号识别电池包的类型并识别电池包的放电门限值。
一种电动工具控制方法,电动工具包括电动工具本体和电池包,包括以下步骤:
将所述电池包安装于所述电动工具本体;
所述电动工具本体识别所述电池包的类型,所述电池包的类型反映所述电池包的总容量信息;
根据所述电池包的类型控制所述电动工具的电机的工作状态。
本电动工具控制方法中,通过识别电池包的类型,并根据电池包的类型控制电机的工作状态,可更为广泛地适应使用者的需求。
优选的,所述电机的工作状态为所述电机的转速。
优选的,所述电池包的类型包括第一容量电池和第二容量电池,所述电机的工作状态包括第一转速和第二转速,当所述电池包为所述第一容量电池时,所述电机转速为所述第一转速,当所述电池包所述第二容量电池时,所 述电机转速为所述第二转速。
优选的,所述第一容量电池的电池总容量大于所述第二容量电池的电池总容量,所述第一转速大于所述第二转速。
优选的,在所述根据电池包的类型控制电动工具的电机的工作状态的步骤之前判断是否需要控制电机的工作状态,如果需要控制电机的工作状态,执行所述根据电池包的类型控制电动工具的电机的工作状态的步骤,如果不需要控制电机的工作状态,则不执行根据电池包的类型控制电动工具的电机的工作状态的步骤,控制电机于预设工作状态下工作。
优选的,所述电动工具本体识别电池包的类型,电池包的类型反映电池包的总容量信息的步骤具体为:所述电池包向所述电动工具本体发送信号,所述电动工具本体接收所述电池包发送的信号,并根据所述信号识别所述电池包的类型。
一种电动工具,包括电动工具本体、可安装于所述电动工具本体的电池包和控制器,所述电动工具本体包括电池包类型识别装置,以识别所述电池包的类型,所述控制器根据所述电池包的类型控制所述电动工具的电机的工作状态。
本电动工具控制方法中,通过识别电池包的类型,并根据电池包的类型控制电机的工作状态,可更为广泛地适应使用者的需求。
优选的,所述电机的工作状态为所述电机的转速。
优选的,所述控制器在控制电机的工作状态之前还可判断是否控制电机的工作状态,如果是,则根据所述电池包的类型控制电机的工作状态,如果否,则控制电机于预设工作状态下工作。
优选的,所述电动工具本体包括信号识别开关,电池包包括类型标记,所述类型标记向信号识别开关发送信号,所述信号识别开关接收信号并识别类型标记以识别所述电池包的类型;或者,所述电动工具本体上设有信号识别开关,所述信号识别开关检测电池包的不同信号来识别所述电池包的类型。
一种电动工具,包括电动工具本体,可安装于所述电动工具本体的电池包,所述电动工具本体包括检测装置和控制器,所述检测装置用以检测所述 电池包的参数,根据所述电池包的参数识别电池包的放电门限值,所述控制器根据所述电池包的放电门限值控制所述电动工具的输出功率。
优选的,所述电池包的参数包括反映电池包初始放电门限值的参数,所述电动工具中的控制器根据所述电池包的初始放电门限值控制电动工具的输出功率。
优选的,所述反映电池包的初始放电门限值的参数包括电池包的型号,厂商,组包方式、容量或放电倍率中至少一种。
优选的,所述电池包的参数还包括电池包的衰减特性,所述衰减特性表征初始电池包的放电门限值随循环放电次数的衰减情况,所述电动工具中的控制器根据所述初始电池包的放电门限值和衰减特性来控制电动工具的输出功率。
优选的,所述电池包的放电门限值为电池包允许的平均放电电流。
优选的,所述电池包的放电门限值为电池包允许的平均输出功率。
优选的,所述电动工具中的控制器将所述电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输入电流不大于电动工具额定功率状态下需要的电流。
优选的,所述电动工具中的控制器将所述电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,若电池包允许的平均放电电流小于电动工具额定功率状态下需要的电流,则控制器禁止输出占空比为100%的信号;若电池包允许的平均放电电流大于或等于电动工具额定功率状态下需要的电流,则控制器允许输出占空比为100%的信号。
优选的,所述电动工具中的控制器将所述电池包允许的平均输出功率与电动工具的额定功率进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输出功率不大于电动工具的额定功率。
优选的,所述电动工具中的控制器将所述电池包允许的平均输出功率与电动工具的额定功率进行比较,若电池包允许的平均输出功率小于电动工具的额定功率,则控制器禁止输出占空比为100%的信号;若电池包允许的平均输出功率大于或等于电动工具的额定功率,则控制器允许输出占空比为100%的信号。
优选的,所述电池包的参数包括电池包的电量信息,所述电动工具中的 控制器根据所述电池包的电量信息控制电动工具的输出功率。
优选的,所述电动工具包括显示装置,用于显示电池包的剩余电量信息。
优选的,所述显示装置显示电池包的剩余电量可维持电动工具工作的时间。
优选的,所述电动工具本体包括通信模块,所述电池包将表征电池包的放电门限值的参数以数据形式通过通信模块传输给所述电动工具本体,所述电动工具本体接收所述电池包传输的数据,并根据接收的所述数据识别所述电池包的放电门限值。
优选的,所述电池包包括类型标记,所述工具本体内设置有类型识别组件,所述类型识别组件接收所述电池包的类型标记发送的信号,并通过所述信号识别电池包的类型并识别电池包的放电门限值。
与现有技术相比,本发明的有益效果是:本发明检测电池包的参数,并识别电池包的放电门限值,工具本体内控制器根据电池包的放电门限值控制电动工具的输出功率,使得电动工具有可适配不同类型的电池包,提高了电动工具的通用型,,避免了放电能力弱的电池包安装于额定功率大的电池包时,电池包的温度过高进入过温保护状态,导致电池包的电能不能全部为电动工具提供动能,导致了电能的浪费及影响电池包寿命。
附图说明
以上所述的本发明的目的、技术方案以及有益效果可以通过下面附图实现:
图1为本发明电动工具控制方法的第一实施例的流程图;
图2为本发明电动工具控制方法的第二实施例的流程图;
图3为本发明电动工具控制方法的第三实施例的流程图;
图4为本发明电动工具的第一实施例的结构示意图;
图5为本发明电动工具的第二实施例的结构示意图。
具体实施方式
为了便于理解本发明,下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施例。但是,本发明可以以许多不同的形式来实现,并不限于本文所描述的实施例。相反地,提供这些实施例的目的是使对本发明的公开内容的理解更加透彻全面。
需要说明的是,当元件被称为“固定于”另一个元件,它可以直接在另一个元件上或者也可以存在两者之间的元件。当一个元件被认为是“连接”另一个元件,它可以是直接连接到另一个元件或者可能同时存在两者之间的元件。
除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1,本发明第一实施例的电动工具控制方法包括以下步骤:
S10:将电池包安装于电动工具本体;
S20:电动工具本体检测电池包的参数,根据电池包的参数识别电池包的放电门限值;
具体的,电池包的参数包括电池包的出厂参数,所述电池包的出厂参数反映初始电池包的放电门限值或电池包的初始放电门限值,电池包的出厂参数包括电池包的型号、厂商、出厂时间,组包方式,容量、初始内阻及放电倍率等参数,用户可通过电池包的型号和厂商可获知电池包的放电门限值,用户可通过电池包的型号和组包方式获知电池包的放电门限值,用户还可以直接通过电池包的放电倍率了解电池包的放电门限值,即用户可通过上述参数中的一种或几种的组合获知电池包的放电门限值。电池包经过一段时间的循环充放电后,电池包的放电门限值会下降,或者电池包存放一段时间再使用,电池包的放电门限值也会下降,因此本发明所述的电池包参数还包括电池包的衰减特性,具体包括电池包循环放电的次数,存放时间,内阻变化情况等,对于旧电池包来说,电动工具控制器可根据电池包的初始参数和衰减特性等计算电池包实际的放电门限值。
本发明中的一种实施例中,电所述电池包的放电门限值为电池包允许的平均放电电流,电池包允许的平均放电电流指的是满足电池包寿命的最大平均放电电流,即在保证电池包寿命的前提下允许的最大平均放电电流。
S30:电动工具中的控制器根据电池包的放电门限值控制电动工具的电 机的输出功率。具体地,控制器控制电机输出功率的方法包括调节电动工具的占空比来控制电机的输出功率。
本电动工具控制方法中,通过检测电池包的参数识别电池包的放电门限值,并根据电池包的放电门限值控制电机的输出功率,电池包的放电门限值体现为电池包允许的平均放电电流的大小,具体的,电动工具本体检测电池包的参数,包括上述表示电池包初始放电门限值的参数及根据电池包的衰减特性获得的表征电池包的实际放电门限值的参数,电动工具控制器根据表示电池包的初始放电门限值的参数或实际放电门限值的参数识别电池包允许的平均放电电流,控制器根据电池包的放电电流控制电动工具的输出功率。
具体的,电动工具的控制器根据电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输入电流不大于电动工具需要的电流。优选的,使得电机的输入电流不大于电池包允许的平均放电电流,具体步骤请参考图2所示。
请参阅图2,本发明第二实施例的电动工具控制方法包括以下步骤
S10:将电池包安装于电动工具本体;
S20:电动工具本体检测电池包的参数,获取电池包允许的平均放电电流。
S310:电动工具中的控制器判断电池包允许的平均放电电流是否小于电动工具额定功率状态下需要的电流,若是,则执行步骤S320,若否,则执行步骤S330。
S320:控制器禁止输出占空比为100%的信号。即控制器降低占空比,使电机的输入电流小于电机额定功率状态下需要的电流。优选的,使得电机的输入电流不大于电池包允许的平均放电电流。
本实施例中当电池包允许的平均放电电流小于电动工具额定功率状态下需要的电流时,为了使该电池包适配于工具本体,且不影响该电池包的使用寿命,需要通过控制器调节电机的输入电流,使电机的输入电流小于电动工具额定功率状态下需要的电流,具体可通过调低占空比,使控制器禁止输出 占空比为100%的信号给电机的驱动开关,电机的电流下降,使电动工具的输出功率低于工具需要的功率。
在上述实施例中,控制器输出占空比不为100%的信号为电机的驱动开关,使得电机的电流略高于电池包允许的平均放电电流而小于工具额定功率状态下需要的电流。例如,电动工具的额定功率状态下需要的电流为20A,即额定电流为20A,当一电池包安装于工具本体上时,电动工具本体检测反映电池包允许的平均放电电流为15A,控制器判断电池包允许的平均放电电流小于工具额定电流20A,控制器根据实际工况需要或者操作着的舒适度调节占空比,使电机的输入电流为16A或17A。既能使电池包通用于工具,又可保证一定的工作效率。
本领域技术人员可知的,控制器输出占空比不为100%的信号为电机的驱动开关,使得电机的电流不高于电池包允许的平均放电电流。例如,电动工具的额定功率状态下需要的电流为20A,即额定电流为20A,当一电池包安装于工具本体上时,电动工具本体检测反应电池包允许的平均放电电流为15A,控制器判断电池包允许的平均放电电流小于工具额定电流20A,控制器根据实际工况需要或者操作着的舒适度调节占空比,使电机的输入电流为15A或者小于15A。既能使电池包通用于工具,又能防止电池包大电流工作影响电池包的使用寿命。
S330:控制器允许输出占空比为100%的信号。即在电池包安装于电动工具时,若电池包允许的平均放电电流大于或等于电动工具额定功率状态下需要的电流,则控制器可以输出占空比为100%的信号控制电机的驱动开关,在实际工作中,根据工况控制器可以输出占空比为100%的信号,在某些工况下也可输出占空比小于100%的信号控制电机的驱动开关。即占空比具体数值可根据需要调节。
在本发明的一具体实施例中,电动工具的额定功率状态下需要的电流为20A,即额定电流为20A,当一电池包安装于工具本体上时,电动工具本体检测反应电池包放电门限值的参数,具体的,电动工具本体检测表征电池包初始放电门限值的参数,例如检测电池包的型号、厂商、出厂时间,组包方式,容量、初始内阻及放电倍率等参数,获取电池包允许的平均放电电流, 例如通过上述参数获取电池包允许的平均放电电流为15A,控制器判断电池包允许的平均放电电流小于工具额定电流20A,若不采取措施,而使电动工具电机的输入电流仍为20A,会使电池包的寿命降低,不利于电池包或工具的通用性,本实施例中,控制器调节占空比,控制器输出占空比不为100%的信号给电机的驱动开关,具体占空比数值可根据实际操作效果决定,使的电机的输入电流小于电机额定电流20A,具体的,电机的输入电流可以为14A,15A,16A等多种情况,提高了电池包对电机的通用型,电机的输入电流可以小于初始电池包允许的平均放电电流15A,防止电池包的寿命受损,也可以略微高于实际电池包允许的平均放电电流15A,以获得更高的效率或者操作舒适度。
在本发明的另一具体实施例中,电动工具的额定功率状态下需要的电流为20A,即额定电流为20A,当一电池包安装于工具本体上时,电动工具本体检测反应电池包放电门限值的参数,具体的,电动工具本体检测表征电池包初始放电门限值的参数,例如检测电池包的型号、厂商、出厂时间,组包方式,容量、初始内阻及放电倍率等参数,并检测表征电池包衰减特性的参数,例如电池包循环放电的次数,存放时间,内阻变化情况等,根据电池包初始放电门限值和衰减特性获得电池包实际放电门限值,例如根据表征初始放电门限值的参数获得初始的电池包允许平均放电电流为15A,经衰减后,得到电池包实际放电电流为13A,小于工具额定电流20A,若不采取措施,而使电动工具电机的输入电流仍为20A,会使电池包的寿命降低,不利于电池包或工具的通用性,本实施例中,控制器调节占空比,控制器输出占空比不为100%的信号给电机的驱动开关,具体占空比数值可根据实际操作效果决定,使的电机的输入电流小于电机额定电流20A,具体的,电机的输入电流可以为12A,13A,14A等多种情况,提高了电池包对电机的通用型,电机的输入电流可以小于实际电池包允许的平均放电电流13A,防止电池包的寿命受损,也可以略微高于实际电池包允许的平均放电电流13A,以获得更高的效率或者操作舒适度。
上述实施例中,当控制器判断电池包允许的平均放电电流大于或等于工具额定电流时,说明电池包的放电门限值很强,满足电动工具工作的需要,控制器允许输出占空比为100%的信号给电机的驱动开关,即在某些工况下,控制器输出占空比为100%的信号给电机的驱动开关,在某些公开下,控制 器可能输出占空比小于100%的信号。
上述实施例,通过检测电池包的参数识别电池包的放电门限值,并根据电池包放电门限值控制电动工具的输出功率,使得电动工具与电池包之间的兼容性更高,提高了电池包对电动工具的通用型,将电池包允许的平均放电电流与电动工具额定电流做比较控制电动工具的输出功率,避免了放电电流小的电池包安装于额定电流大的电流工具时,电池包以工具需要的电池工作而导致的电池包温度过高进入过温保护状态,导致电池包的电能不能全部为电动工具提供动能,导致了电能的浪费及影响电池包寿命。
上述实施例中电池包的放电门限值通过电池包允许的平均放电电流来体现,在本发明的另一实施例中,电池包的放电门限值为电池包允许的平均输出功率,具体的,电动工具需要的功率为800W,当一电池包安装于工具本体上时,电动工具本体检测反应电池包放电门限值的参数,具体的,可检测表征电池包初始放电门限值的参数或衰减后的参数,根据检测的参数识别电池包的放电门限值,例如识别电池包的平均放电功率为600W,控制器判断电池包的放电功率小于工具需要的功率,控制器调节占空比,使得控制器输出占空比不为100%的信号,具体降低占空比数值根据实际工况决定,使的电机的输出功率小于电机需要的功率800W,以防止电池包的寿命受损,使得电池包对电机的通用性更强。电机的输出功率可以小于电池包允许的平均放电功率600W,防止电池包的寿命受损,也可以略微高于实际电池包的平均放电功率600W,以获得更高的效率或者操作舒适度。
当检测电池包的放电功率为800W或900W时,控制器判断电池包的放电功率不小于工具需要的功率,说明电池包的放电门限值很强,满足电动工具工作的需要,控制器允许输出占空比为100%的信号,具体占空比的数值可根据实际工况决定,使电机以电动工具需要的功率800W工作。
具体的上述实施例中检测电池包允许的平均放电功率的方法包括检测表征电池包初始允许的平均放电功率的参数,例如检测电池包的型号、厂商、出厂时间,组包方式,容量、初始内阻及放电倍率等参数,获取电池包允许的平均放电功率;另一种方法中,电动工具本体检测表征电池包初始允许的平均放电功率的参数,例如检测电池包的型号、厂商、出厂时间,组包方式,容量、初始内阻及放电倍率等参数,并检测表征电池包衰减特性的参数,获取电池包实际允许平均放电功率。
本发明通过检测电池包的参数,识别电池包的放电门限值并根据电池包放电门限值控制电动工具的输出功率,使得电动工具有可适配不同类型的电池包,提高了电动工具的通用型,将电池包的放电门限值与电动工具需要的功率或放电电流做比较控制电动工具的输出功率,避免了放电门限值弱的电池包安装于功率或电流大的工具本体时,电池包的温度过高进入过温保护状态,导致电池包的电能不能全部为电动工具提供动能,导致了电能的浪费及影响电池包寿命。
请参考图2所述的电动工具控制方法,为了更好的便于用户了解电池包的使用情况,本发明中电动工具的控制方法还包括步骤:
电动工具中的显示装置显示电池包的电量信息。
具体的,电动工具中设置有电量显示装置用以显示电池包的剩余电量信息,优选的,电动工具中的控制器还可以根据电池包的电量信息计算电池包续航时间,并通过显示装置显示电池包的电量和续航时间中的至少一种。
本发明的一实施例中,电池包将表征电池包放电门限值的参数,例如表征电池包允许的平均放电电流或电池包允许的平均放电功率的参数以数据形式通过通信模块传输给电动工具本体,电动工具本体接收所述电池包传输的数据,并根据接收的数据识别电池包的放电门限值,进而控制电动工具的输出功率。
本发明的另一实施例中,电动工具本体包括类型识别组件,具体可以是信号识别开关,电池包包括类型标记,类型标记向信号识别开关发送信号,信号识别开关接收信号并识别类型标记以识别电池包的类型。具体地,类型标记可为标记于电池包上的二维码或射频识别码,信号识别开关通过直接扫描或感应二维码或射频识别码来识别电池包的类型。可以理解,电池包上可不设置任何标记,电动工具本体上设有信号识别开关,信号识别开关检测电池包的不同信号来识别电池包的类型。具体地,电池包的信号可以为电池包的内部电阻、电池包的开路电压等。
优选的,在本发明的电动工具控制方法中,电动工具内有存储单元,存储单元内存储有各种电池包的管理模式,电池包的管理模式具体可包括反映电池包放电门限值的参数,及与该参数一一对应的电池包的放电倍率,其中, 反映电池包放电门限值的参数包括电池包的型号,厂商,组包方式,循环放电次数等参数,控制器根据电池包管理模式获取电池包放电倍率即电池包放电电流,工具中控制器比较电池包放电电流与工具额定功率状态下需要的电流的大小,并调节占空比,控制工具的输出功率。
本领域技术人员可知的,本发明可检测反映电池包放电门限值的参数,直接获取电机的输出功率,对电机进行控制,即现有技术中能通过检测的电池包参数识别电池包类型的方法均属于本发明实施例的范畴,在此不一一详述。
在本发明的第三实施例中,请参阅图3所示的电动工具控制方法,具体包括以下步骤:
S110:将电池包安装于电动工具本体;
S130:电动工具本体识别电池包的类型,电池包的类型反映电池包的总容量信息;
S150:根据电池包的类型控制电动工具的电机的工作状态。具体地,电机的工作状态包括但不限于电机的转速。
本电动工具控制方法中,通过识别电池包的类型,并根据电池包的类型控制电机的工作状态,可更为广泛地适应使用者的需求。例如,当识别出电池包的电池容量较大时,可控制电机提高转速,从而提升电动工具的动力,可提高工作效率,并适应更多工况,满足使用者更多的需求。
本实施例中,电池包的类型包括第一容量电池和第二容量电池,所述电机的工作状态包括第一转速和第二转速,当所述电池包为第一容量电池时,所述电机转速为第一转速,当电池包第二容量电池时,所述电机转速为第二转速。具体地,第一容量电池的电池总容量大于第二容量电池的电池总容量,第一转速大于第二转速。
在一种电动工具中,电池总容量为2Ah的电池包,工作效率为4平方米/分钟,单个电池包可工作15分钟,电池总容量为3Ah的电池包,工作效率为5平方米/分钟,单个电池包可工作18分钟,池总容量为4Ah的电池包,工作效率为6平方米/分钟,单个电池包可工作20分钟。
本实施例中,电动工具控制方法还包括步骤:
S120,在步骤S150之前判断是否需要控制电机的工作状态,如果需要控制电机的工作状态,执行步骤S150,如果不需要控制电机的工作状态,则不执行步骤S150,控制电机于预设工作状态下工作。部分工况下,并不需要控制电机的工作状态来调整电动工具的动力,可不调整电机的工作状态,这样,单个电池包可允许电动工具连续工作更长时间,这样,电动工具可根据实际情况适应更多的工况要求。可以理解,步骤S120可在步骤S130之前执行,也可在步骤S150之前执行。
本实施例中,步骤S130具体为:电池包向电动工具本体发送信号,电动工具本体接收电池包发送的信号,并根据该信号识别电池包的类型。
本实施例中,电动工具本体包括信号识别开关,电池包包括类型标记,类型标记向信号识别开关发送信号,信号识别开关接收信号并识别类型标记以识别电池包的类型。具体地,类型标记可为标记于电池包上的二维码或射频识别码,信号识别开关通过直接扫描或感应二维码或射频识别码来识别电池包的类型。可以理解,电池包上可不设置任何标记,电动工具本体上设有信号识别开关,信号识别开关检测电池包的不同信号来识别电池包的类型。具体地,电池包的信号可以为电池包的内部电阻、电池包的开路电压等。
本发明还提供一种电动工具,请参阅图4所示为本发明电动工具的第一实施例的结果示意图,电动工具包括电动工具本体210、可安装于电动工具本体210的电池包230,电动工具本体210包括检测装置240和控制器250,检测装置240检测电池包230的参数,该参数反映电池包230的放电门限值,控制器250根据电池包230的放电门限值控制电动工具的电机的工作状态。具体地,电机的工作状态包括电机的输出功率。
具体的,电池包230的参数包括电池包230的出厂参数,所述电池包230的出厂参数反映电池包230的初始放电门限值,电池包230的出厂参数包括电池包230的型号、厂商、组包方式,容量、初始内阻及放电倍率等参数,用户可通过电池包230的型号和厂商可获知电池包230的放电门限值,用户可通过电池包230的型号和组包方式获知电池包230的放电门限值,用户还 可以直接通过电池包230的放电倍率了解电池包230的放电门限值,即用户可通过上述参数中的一种或几种的组合获知电池包230的放电门限值。电池包230经过一段时间的循环充放电后,电池包230的放电门限值会下降,因此本发明所述的电池包230参数还包括电池包230的衰减特性,包括电池包230循环放电的次数,内阻变化情况等,对于旧电池包230来说,电动工具控制器250可根据电池包230的初始参数和衰减特性等计算电池包230当前的放电门限值。本电动工具中,通过电动工具本体210中的检测装置240检测电池包230的参数,并识别电池包230的放电门限值,控制器250根据电池包230的放电门限值控制电机的工作状态,电池包230的工作状态为所述电机的输出功率,具体控制器250控制电机输出功率的方法包括调节电动工具的占空比来控制电机的输出功率。
本电动工具控制方法中,检测装置240检测电池包230的参数,识别电池包230的放电门限值,控制器250根据电池包230的放电门限值控制电机的工作状态,电池包230的放电门限值体现为表示电池包允许的平均放电电流,具体的,电动工具本体210检测电池包230的参数,包括表示电池包230初始放电门限值的参数及根据电池包230的衰减特性获得的表征电池包230的实际放电门限值的参数,电动工具控制器250根据电池包230的初始放电门限值的参数或实际放电门限值的参数识别电池包允许的平均放电电流,控制器250根据电池包允许的平均放电电流控制电动工具的输出功率。
具体的,电动工具的控制器250根据电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输入电流不大于电动工具额定功率状态下需要的电流。本发明所指的电池包允许的平均放电电流的是满足电池包寿命的最大平均放电电流,即电池包230能在保证电池包寿命的前提下的最大平均放电电流。
上述实施例中,当电池包允许的平均放电电流小于电工工具额定功率状态下需要的电流时,为了使该电池包230适配于电动工具本体210,且不影响该电池包230的使用寿命,需要通过控制器250调节电机的输入电流,使 电机的输入电流小于工具额定功率状态下需要的电流,优选的,使得电机的输入电流不大于电池包允许的平均放电电流,具体可通过调节占空比,控制器250输出占空比不为100%的信号给电机的驱动开关,使电机的电流下降,使工具的输出功率低于工具需要的功率。既能使电池包230通用于工具,又能防止电池包230大电流工作影响电池包230的使用寿命,占空比具体调节的数值可根据用户操作的舒适度或者工况决定。
当电池包允许的平均放电电流大于或等于工具额定功率状态下需要的电流时,此时电池包230的放电门限值充足,工具可以以100%的占空比运行,使电机的输入电流等于电机额定功率状态下需要的电流,工具以需要的功率工作。若后续需要对转速进行控制,也可调节占空比小于100%,即本事实力中,电池包允许的平均放电电流大于或等于工具额定功率状态下需要的电流时,控制器250允许输出占空比为100%的信号,具体可根据需要进行调节当。
上述实施例中电池包230的放电门限值通过电池包允许的平均放电电流来体现,本领域技术人员可知的,电池包230的放电门限值也可通过电池包允许的平均放电功率来体现,在此不一一详述。
电池包230在本发明电动工具的一实施例中,检测装置240具体包括类型识别组件(图中未标出),以识别电池包230的类型,具体的识别组件为电动工具本体210上设置的信号识别开关,电池包230包括类型标记,类型标记向信号识别开关发送信号,信号识别开关接收信号并识别类型标记以识别电池包230的类型,具体识别电池包230的放电门限值。具体地,类型标记可为标记于电池包230上的二维码或射频识别码,信号识别开关通过直接扫描或感应二维码或射频识别码来识别电池包230的类型。可以理解,电池包230上可不设置任何标记,电动工具本体210上设有信号识别开关,信号识别开关检测电池包230的不同信号来识别电池包230的类型。具体地,电池包230的信号可以为电池包230的内部电阻、电池包230的开路电压等。
在本发明的另一实施例中,当电池包230正确的安装于电动工具本体210时,电池包230将表征电池包放电门限值的参数以数据形式通过通信模块260 传输给电动工具本体210,电动工具本体210内控制器250根据通信模块260接收的数据识别电池包230的放电门限值,继而控制电动工具的输出功率。
优选的,在本发明的电动工具控制方法中,电动工具内有存储单元,存储单元内存储有各种电池包230的管理模式,电池包230的管理模式具体可包括反映电池包230放电门限值的参数,及与该参数一一对应的电池包230的放电倍率,其中,反映电池包230放电门限值的参数包括电池包230的型号,厂商,组包方式,循环放电次数等参数,控制器250根据电池包230管理模式获取电池包230放电倍率即电池包230放电电流,工具中控制器250比较电池包230放电电流与工具额定功率状态下需要的电流的大小,并调节占空比,控制工具的输出功率。
在本发明中,电池包230参数还包括电池包230的电量信息,电动工具中的控制器250根据所述电池包230的电量信息控制电动工具的输出功率。本发明电动工具还包括显示装置,用于显示电池包230的剩余电量信息,电动工具中的控制器250还可以根据电池包230的电量信息计算电池包230续航时间,并通过显示装置显示电池包230的电量和续航时间中的至少一种。
本发明还提供一种电动工具,请参阅图5所示为本发明电动工具的第二实施例的结果示意图,一种电动工具包括电动工具本体210、可安装于电动工具本体210的电池包230和控制器250,电动工具本体210包括电池包类型识别装置,以识别电池包230的类型,控制器250根据电池包230的类型控制电动工具的电机的工作状态。具体地,电机的工作状态包括但不限于电机的转速。
通过本电动工具控制装置,识别电池包的类型,并根据电池包的类型控制电机的工作状态,可更为广泛地适应使用者的需求。例如,当识别出电池包的电池容量较大时,可控制电机提高转速,从而提升电动工具的动力,可提高工作效率,并适应更多工况,满足使用者更多的需求。
本实施例中,电池包的类型包括第一容量电池和第二容量电池,所述电机的工作状态包括第一转速和第二转速,当所述电池包为第一容量电池时,所述电机转速为第一转速,当电池包第二容量电池时,所述电机转速为第二 转速。具体地,第一容量电池的电池总容量大于第二容量电池的电池总容量,第一转速大于第二转速。
在一种电动工具中,电池总容量为2Ah的电池包,工作效率为4平方米/分钟,单个电池包可工作15分钟,电池总容量为3Ah的电池包,工作效率为5平方米/分钟,单个电池包可工作18分钟,池总容量为4Ah的电池包,工作效率为6平方米/分钟,单个电池包可工作20分钟。
本实施例中,控制器250在控制电机的工作状态之前还可判断是否控制电机的工作状态,如果是,则根据电池包的类型控制电机的工作状态,如果否,则控制电机于预设工作状态下工作。预设工作状态可为电机以某一预定转速转动,优选地,该预定转速为电机的最低转速。部分工况下,并不需要控制电机的工作状态来调整电动工具的动力,可不调整电机的工作状态,这样,单个电池包可允许电动工具连续工作更长时间,这样,电动工具可根据实际情况适应更多的工况要求。
本实施例中,电动工具本体210包括信号识别开关,电池包包括类型标记,类型标记向信号识别开关发送信号,信号识别开关接收信号并识别类型标记以识别电池包的类型。具体地,类型标记可为标记于电池包上的二维码或射频识别码,信号识别开关通过直接扫描或感应二维码或射频识别码来识别电池包的类型。可以理解,电池包上可不设置任何标记,电动工具本体210上设有信号识别开关,信号识别开关检测电池包的不同信号来识别电池包的类型。具体地,电池包的信号可以为电池包的内部电阻、电池包的开路电压等。
本发明的电动工具,工具本体检测电池包的放电门限值,具体包括电池包的类型、电量信息及其他能反映电池包放电门限值的参数,并根据电池包的放电门限值控制电机的工作状态,使得一种电动工具可适配多种电池包,提高了电动工具的通用性,且避免了放电门限值弱的电池包安装于额定功率大的电池包时,电池包的温度过高进入过温保护状态,导致电池包的电能不能全部为电动工具提供动能,导致了电能的浪费及影响电池包寿命。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详 细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。

Claims (30)

  1. 一种电动工具控制方法,其特征在于,所述电动工具控制方法包括:
    电池包安装于电动工具本体;
    所述电动工具本体检测所述电池包的参数,根据所述电池包的参数识别电池包的放电门限值;
    所述电动工具中的控制器根据所述电池包的放电门限值控制所述电动工具的输出功率。
  2. 如权利要求1所述的电动工具控制方法,其特征在于,所述电池包的参数包括反映电池包初始放电门限值的参数,所述电动工具中的控制器根据所述电池包的初始放电门限值控制电动工具的输出功率。
  3. 如权利要求2所述的电动工具控制方法,其特征在于,所述反映电池包的初始放电门限值的参数包括电池包的型号,厂商,组包方式、容量或放电倍率中至少一种。
  4. 如权利要求2所述的电动工具控制方法,其特征在于,所述电池包的参数还包括电池包的衰减特性,所述衰减特性表征电池包的初始放电门限值随循环放电次数的衰减情况,所述电动工具中的控制器根据所述电池包的初始放电门限值和衰减特性来控制电动工具的输出功率。
  5. 如权利要求1所述的电动工具控制方法,其特征在于,所述电池包的放电门限值为电池包允许的平均放电电流。
  6. 如权利要求1所述的电动工具控制方法,其特征在于,所述电池包的放电门限值为电池包允许的平均输出功率。
  7. 如权利要求5所述的电动工具控制方法,其特征在于,所述电动工具中的控制器根据所述电池包允许的平均放电电流控制所述电动工具的电机的输出功率的步骤具体为:
    所述电动工具中的控制器将所述电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输入电流不大于电动工具额定功率状态下需要的电流。
  8. 根据权利要求7所述的电动工具控制方法,其特征在于,所述电动工具中的控制器将所述电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,根据比较结果控制所述电动工具的电机的占空比的步骤具体为:
    电动工具中的控制器判断电池包允许的平均放电电流是否小于电动工具额定功率状态下需要的电流;
    若是,则控制器禁止输出占空比为100%的信号;
    若否,则控制器允许输出占空比为100%的信号。
  9. 如权利要求6所述的电动工具控制方法,其特征在于,所述电动工具中的控制器根据所述电池包允许的平均输出功率控制所述电动工具的电机的输出功率的步骤具体为:
    所述电动工具中的控制器将所述电池包允许的平均输出功率与电动工具的额定功率进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输出功率不大于电动工具的额定功率。
  10. 根据权利要求9所述的电动工具控制方法,其特征在于,所述电动工具中的控制器将所述电池包允许的平均输出功率与电动工具的额定功率进行比较,根据比较结果控制所述电动工具的电机的占空比的步骤具体为:
    电动工具中的控制器判断电池包允许的平均输出功率是否小于电动工具的额定功率;
    若是,则控制器禁止输出占空比为100%的信号;
    若否,则控制器允许输出占空比为100%的信号。
  11. 如权利要求1所述的电动工具控制方法,其特征在于,所述电池包的参数包括电池包的电量信息,所述电动工具中的控制器根据所述电池包的电量信息控制电动工具的输出功率。
  12. 如权利要求12所述的电动工具控制方法,其特征在于,所述电动工具包括显示装置,用于显示电池包的剩余电量信息。
  13. 如权利要求12所述的电动工具控制方法,其特征在于,所述显示装置显示电池包的剩余电量可维持电动工具工作的时间。
  14. 如权利要求1所述的电动工具控制方法,其特征在于,所述电动工具本体检测所述电池包的参数,根据所述电池包的参数识别电池包的放电门限值的步骤具体为:所述电池包将表征电池包放电门限值的参数以数据形式通过通信模块传输给所述电动工具本体,所述电动工具本体接收所述电池包传输的数据,并根据接收的所述数据识别所述电池包的放电门限值。
  15. 如权利要求1所述的电动工具控制方法,其特征在于,所述电动工具本体检测所述电池包的参数,根据所述电池包的参数识别电池包的放电门限值 的步骤具体为:
    所述电池包设置有类型标记,所述工具本体内设置有类型识别组件,所述类型识别组件接收所述电池包的类型标记发送的信号,并通过所述信号识别电池包的类型并识别电池包的放电门限值。
  16. 一种电动工具,其特征在于,包括电动工具本体,可安装于所述电动工具本体的电池包,所述电动工具本体包括检测装置和控制器,所述检测装置用以检测所述电池包的参数,根据所述电池包的参数识别电池包的放电门限值,所述控制器根据所述电池包的放电门限值控制所述电动工具的输出功率。
  17. 如权利要求16所述的电动工具,其特征在于,所述电池包的参数包括反映电池包初始放电门限值的参数,所述电动工具中的控制器根据所述电池包的初始放电门限值控制电动工具的输出功率。
  18. 如权利要求17所述的电动工具,其特征在于,所述反映电池包的初始放电门限值的参数包括电池包的型号,厂商,组包方式、容量或放电倍率中至少一种。
  19. 如权利要求17所述的电动工具,其特征在于,所述电池包的参数还包括电池包的衰减特性,所述衰减特性表征初始电池包的放电门限值随循环放电次数的衰减情况,所述电动工具中的控制器根据所述初始电池包的放电门限值和衰减特性来控制电动工具的输出功率。
  20. 如权利要求16所述的电动工具,其特征在于,所述电池包的放电门限值为电池包允许的平均放电电流。
  21. 如权利要求16所述的电动工具,其特征在于,所述电池包的放电门限值为电池包允许的平均输出功率。
  22. 如权利要求20所述的电动工具,其特征在于,所述电动工具中的控制器将所述电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输入电流不大于电动工具额定功率状态下需要的电流。
  23. 如权利要求22所述的电动工具,其特征在于,所述电动工具中的控制器将所述电池包允许的平均放电电流与电动工具额定功率状态下需要的电流进行比较,若电池包允许的平均放电电流小于电动工具额定功率状态下需要的电流,则控制器禁止输出占空比为100%的信号;若电池包允许的平均放电电流大于或等于电动工具额定功率状态下需要的电流,则控制器允许输出占 空比为100%的信号。
  24. 如权利要求21所述的电动工具,其特征在于,所述电动工具中的控制器将所述电池包允许的平均输出功率与电动工具的额定功率进行比较,根据比较结果控制所述电动工具的电机的占空比,使得电机的输出功率不大于电动工具的额定功率。
  25. 如权利要求24所述的电动工具,其特征在于,所述电动工具中的控制器将所述电池包允许的平均输出功率与电动工具的额定功率进行比较,若电池包允许的平均输出功率小于电动工具的额定功率,则控制器禁止输出占空比为100%的信号;若电池包允许的平均输出功率大于或等于电动工具的额定功率,则控制器允许输出占空比为100%的信号。
  26. 如权利要求16所述的电动工具,其特征在于,所述电池包的参数包括电池包的电量信息,所述电动工具中的控制器根据所述电池包的电量信息控制电动工具的输出功率。
  27. 如权利要求26所述的电动工具,其特征在于,所述电动工具包括显示装置,用于显示电池包的剩余电量信息。
  28. 如权利要求27所述的电动工具,其特征在于,所述显示装置显示电池包的剩余电量可维持电动工具工作的时间。
  29. 如权利要求16所述的电动工具,其特征在于,所述电动工具本体包括通信模块,所述电池包将表征电池包的放电门限值的参数以数据形式通过通信模块传输给所述电动工具本体,所述电动工具本体接收所述电池包传输的数据,并根据接收的所述数据识别所述电池包的放电门限值。
  30. 如权利要求16所述的电动工具,其特征在于,所述电池包包括类型标记,所述工具本体内设置有类型识别组件,所述类型识别组件接收所述电池包的类型标记发送的信号,并通过所述信号识别电池包的类型并识别电池包的放电门限值。
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