CN102484964B - Cordless electric tool - Google Patents
Cordless electric tool Download PDFInfo
- Publication number
- CN102484964B CN102484964B CN201010568716.3A CN201010568716A CN102484964B CN 102484964 B CN102484964 B CN 102484964B CN 201010568716 A CN201010568716 A CN 201010568716A CN 102484964 B CN102484964 B CN 102484964B
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- energy management
- work
- output
- management apparatus
- battery supply
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- 238000005070 sampling Methods 0.000 claims abstract description 17
- 230000000052 comparative effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000005669 field effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a cordless electric tool, which comprises a battery power supply, a motor, a work device and an energy management device, wherein the motive power of the motor is provided by the battery power supply, the work device is driven by the motor, and the energy management device is respectively connected with the work device and the battery power supply. The energy management device includes a micro-controller. The energy management device samples load signals when the work device works, the energy management device automatically regulates the work output of the battery power supply when the micro-controller finds that the sampling value of the load signals is greater than the first standard value preset in the micro-controller, and the low work output is changed into the high work output. When the micro-controller finds that the sampling value of the load signals, within a certain time, is continuous less than the first standard value preset in the micro-controller, the energy management device automatically regulates the work output of the battery power supply from the high work output to the low work output. The cordless electric tool provided by the invention has the advantages that through the arrangement of the energy management device, the battery electricity output is effectively managed, and the utilization efficiency of the battery electricity is improved, so the service life of a battery is prolonged.
Description
Technical field
The present invention relates to a kind of cordless power tool, especially a kind of cordless power tool with energy management apparatus, for example, wireless mower.
Background technology
Along with the development of electric tool, the scope of its application is more and more extensive.In order to improve the ease of use of electric tool, overcome power line and for electric tool, use the restriction in region, the development of cordless power tool is also greatly improved.
And due to the battery of power being provided for cordless power tool, can be subject to the restriction of some objective condition, and for example, volume, weight etc., causes its capacitance can have heap(ed) capacity restriction, and this also will cause to be restricted the service time of electric tool.Therefore, how to improve the service time of predetermined volumes battery, be all the emphasis of industry research and development all the time.
Summary of the invention
In order to improve the service time of cordless power tool battery, the invention provides a kind of cordless power tool, it has energy management apparatus, and it can effectively manage battery electric quantity output, and then improves the service efficiency of battery electric quantity, thus the service time of improving battery.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of cordless power tool, it comprises battery supply, the motor of power is provided by battery supply, the equipment being driven by motor and the energy management apparatus being connected with battery supply with equipment respectively, energy management apparatus comprises microcontroller, wherein battery supply is initially to start output with lower work, in follow-up operation process, load signal when energy management apparatus continues the work of dynamic sampling equipment, when microcontroller finds that the sampling numerical value of load signal is greater than the first standard figures default in it, the work output that can adjust automatically battery supply becomes high workload from low work output and exports.When the sampling numerical value of microcontroller discovery load signal, within a certain period of time, while continuing little the first standard figures of presetting in the inner, the work output of adjusting automatically battery supply becomes low work from high workload output and exports.
The cordless power tool the present invention relates to is sampled to the load information of its equipment by the energy management apparatus arranging, and makes it to adjust the power that battery supply is exported to motor according to load information, thereby improves the service efficiency of battery supply.For example, in the situation that equipment load is less, energy management apparatus adjust battery supply with lower power stage to motor.And when load becomes large, be adjust in time battery supply with larger power stage to motor.So, according to the loading condition of equipment, adjust dynamically the output of battery supply, it be there will not be in the situation that load is less, still with relatively high power output, cause electric weight waste, and then to a certain extent, extended the service time of battery supply.
Further, in different embodiments, for the concrete numerical values recited of the first standard figures adopting, can set voluntarily according to actual needs, and indefinite.Further, on the first standard figures, also second, third standard figures etc. can be set, the output that makes battery supply is low, high two output modes not only, can be ascending a plurality of output modes.
Further, in different embodiments, load signal when wherein equipment is worked comprises the current value that it passes through.
Further, in different embodiments, microcontroller is for the sampling work device load signal in when work, and controls the work output of power supply.
Further, in different embodiments, wherein energy management apparatus also comprises MOSFET, microcontroller is controlled low, the high workload output of power supply by controlling MOSFET (Metallic Oxide Semiconductor Field Effect Transistor, mos field effect transistor).
Further, in different embodiments, wherein cordless power tool is wireless mower, and equipment is cutterhead.
Further, in different embodiments, wherein energy management apparatus comprises control device and the checkout gear being attached thereto, checkout gear is connected and is used for sampling its load signal with equipment, and the load signal that sampling is obtained passes to control device, control device is greater than the comparative result of the first standard figures default in it according to the signal numerical value that detects acquisition, the work output of adjusting automatically battery supply becomes high workload from low work output and exports.
Further, in different embodiments, the control device that wherein energy management apparatus comprises and the checkout gear being attached thereto, under technical conditions now, both can be combined into a device.Both functions are provided by single device, for example, microcontroller mentioned above.
The invention has the beneficial effects as follows, the cordless power tool the present invention relates to is sampled to the load information of its equipment by the energy management apparatus arranging, make it according to the load state of equipment, to adjust dynamically the power that battery supply is exported to motor.Avoid occurring that equipment load is little, and the large situation of power output occurs.Avoid the unnecessary loss of battery electric quantity, improved the service efficiency of battery supply, and to a certain extent, extended the service time of battery supply.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the building-block of logic of the cordless power tool that the present invention relates to.
Embodiment
Refer to shown in Fig. 1, the present invention relates to a kind of cordless power tool, it includes battery supply, energy management apparatus, motor and equipment.Wherein energy management apparatus comprises microcontroller (Micro Controller Unit, MCU) and MOSFET, load signal when microcontroller is worked for sampling work device, and according to the load information of equipment, by controlling MOSFET (Metallic Oxide Semiconductor Field Effect Transistor, mos field effect transistor), control low, the high workload output of power supply.
In an embodiment, the cordless power tool the present invention relates to is wireless mower, and during its initial start, battery supply is with lower power stage, maintains the normal work of its cutterhead.And in follow-up operation process, its energy management apparatus is by the load information of sampling work device cutterhead, for example, the current information that it passes through, judges the load of equipment cutterhead.When its sampling finds that electric current becomes suddenly large, explanation, cutterhead load strengthens.At this moment, the microcontroller of energy management apparatus can be according to this information, and the large comparative result of the first predetermined standard figures in the inner of current value passing through, by MOSFET, heightens the output of battery supply, to guarantee that cutterhead works normally.
And when cutterhead load diminishes, if at this moment battery supply is also with relatively high power output, can cause the unnecessary waste of battery electric quantity.At this moment the information that energy management apparatus can diminish according to this load, the current value passing through continues the little comparative result of the first predetermined standard figures in the inner within a certain period of time, pass through MOSFET, turn down the output of battery supply, to avoid unnecessary electric quantity loss, also can guarantee that cutterhead works normally simultaneously.
The cordless power tool the present invention relates to, by the energy management apparatus arranging, is sampled to the load information of its equipment, makes it according to the load state of equipment, to adjust dynamically the power that battery supply is exported to motor.Avoid occurring that equipment load is little and power output is large, or the large and power output of load is little etc., and situation occurs.Avoid the unnecessary loss of battery electric quantity, or battery power output is inadequate, causes equipment normally not move.Improve the service efficiency of battery supply, and to a certain extent, extended the service time of battery supply.
Claims (6)
1. a cordless power tool, it comprises battery supply, by battery supply, provide the motor of power and the equipment being driven by motor, it is characterized in that, it also includes the energy management apparatus being connected with battery supply with equipment respectively, energy management apparatus comprises microcontroller, wherein battery supply is initially to start output with lower work, in follow-up operation process, load signal when energy management apparatus continues the work of dynamic sampling equipment, when microcontroller finds that the sampling numerical value of load signal is greater than the first standard figures default in microcontroller, the work output that energy management apparatus can be adjusted automatically battery supply becomes high workload from low work output and exports, sampling numerical value when microcontroller discovery load signal, within a certain period of time, while continuing to be less than the first standard figures default in microcontroller, the work output that energy management apparatus is adjusted battery supply automatically becomes low work from high workload output and exports.
2. cordless power tool as claimed in claim 1, is characterized in that, load signal when wherein equipment is worked comprises the current value that it passes through.
3. cordless power tool as claimed in claim 1, is characterized in that, microcontroller is for the sampling work device load signal in when work, and controls the work output of power supply.
4. cordless power tool as claimed in claim 3, is characterized in that, wherein energy management apparatus also comprises MOSFET, and microcontroller is controlled low, the high workload of power supply and exported by controlling MOSFET.
5. cordless power tool as claimed in claim 1, is characterized in that, wherein cordless power tool is wireless mower, and equipment is cutterhead.
6. cordless power tool as claimed in claim 1, it is characterized in that, wherein energy management apparatus comprises control device and the checkout gear being attached thereto, checkout gear is connected and is used for sampling its load signal with equipment, and the load signal that sampling is obtained passes to control device, control device is greater than the comparative result of the first standard figures default in it according to the signal numerical value that detects acquisition, the work output of adjusting automatically battery supply becomes high workload from low work output and exports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010568716.3A CN102484964B (en) | 2010-12-01 | 2010-12-01 | Cordless electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010568716.3A CN102484964B (en) | 2010-12-01 | 2010-12-01 | Cordless electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102484964A CN102484964A (en) | 2012-06-06 |
| CN102484964B true CN102484964B (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010568716.3A Expired - Fee Related CN102484964B (en) | 2010-12-01 | 2010-12-01 | Cordless electric tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN102484964B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1567208A (en) * | 1975-12-05 | 1980-05-14 | Fiat Spa | Traction instalation for battery-powered electric vehicles |
| CN1145714A (en) * | 1995-07-26 | 1997-03-26 | 布莱克-德克尔公司 | Cordless electric lawn mower having energy management control system |
| CN2755933Y (en) * | 2001-08-22 | 2006-02-08 | 本田技研工业株式会社 | Electric working machine |
| CN101817177A (en) * | 2009-02-27 | 2010-09-01 | 安德烈亚斯.斯蒂尔两合公司 | The battery-driven portable handheld work apparatus that has accelerator rod |
| CN101861781A (en) * | 2009-04-17 | 2010-10-20 | 苏州宝时得电动工具有限公司 | Self-driven mower |
| CN201911062U (en) * | 2010-12-01 | 2011-08-03 | 天佑电器（苏州）有限公司 | Cordless electric tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09201126A (en) * | 1995-11-24 | 1997-08-05 | Honda Motor Co Ltd | Electric mower |
-
2010
- 2010-12-01 CN CN201010568716.3A patent/CN102484964B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1567208A (en) * | 1975-12-05 | 1980-05-14 | Fiat Spa | Traction instalation for battery-powered electric vehicles |
| CN1145714A (en) * | 1995-07-26 | 1997-03-26 | 布莱克-德克尔公司 | Cordless electric lawn mower having energy management control system |
| CN2755933Y (en) * | 2001-08-22 | 2006-02-08 | 本田技研工业株式会社 | Electric working machine |
| CN101817177A (en) * | 2009-02-27 | 2010-09-01 | 安德烈亚斯.斯蒂尔两合公司 | The battery-driven portable handheld work apparatus that has accelerator rod |
| CN101861781A (en) * | 2009-04-17 | 2010-10-20 | 苏州宝时得电动工具有限公司 | Self-driven mower |
| CN201911062U (en) * | 2010-12-01 | 2011-08-03 | 天佑电器（苏州）有限公司 | Cordless electric tool |
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| Publication number | Publication date |
|---|---|
| CN102484964A (en) | 2012-06-06 |
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Granted publication date: 20141210 Termination date: 20201201 |