CN105529970B - Electric tool - Google Patents
Electric tool Download PDFInfo
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- CN105529970B CN105529970B CN201410522787.8A CN201410522787A CN105529970B CN 105529970 B CN105529970 B CN 105529970B CN 201410522787 A CN201410522787 A CN 201410522787A CN 105529970 B CN105529970 B CN 105529970B
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- control module
- battery
- main control
- motor
- module
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Abstract
The present invention electric tool include：Motor, battery, charging interface, main control module, power supply handover module；Battery at least can be that motor is powered；Charging interface can access electric energy and charge for battery；Main control module is for controlling straight-flow system；The power supply that power supply handover module can be such that charging interface is accessed when battery capacity is less than predetermined threshold value is master control module for power supply；Power supply handover module is electrically connected with charging interface, battery and main control module respectively；The invention has the beneficial effects that：It realizes that charging interface is directly that main control module charges when battery capacity is low by power supply handover module, enables electric tool normal operation charging procedure in charging, improve the reliability of circuit and ensure that charging safety.
Description
Technical field
The present invention relates to a kind of electric tools.
Background technology
For the low power electric tool such as screwdriver, internal battery is increasingly becoming a kind of trend, and for side
Just the USB charging interface for being charged as electric tool configuration mark is allowed to charge for battery, undoubtedly greatly facilitates user's
It uses.
But for electric tool, during use, often face battery discharge to a relatively low electricity
Horizontal situation is measured, for the protection to electric tool, existing electric tool was often put when battery capacity is relatively low
Protection, battery no longer discharges at this time, and the control chip of corresponding electric tool is stopped., when being charged using charging interface,
Since control chip does not work and it cannot achieve charging procedure.
Invention content
To solve the deficiencies in the prior art, the purpose of the present invention is to provide one kind can be straight when charging interface accesses power supply
Being connected in main control module power supply makes its live line work.
In order to realize that above-mentioned target, the present invention adopt the following technical scheme that：
A kind of electric tool, which is characterized in that including：
Motor；
Battery at least can be that motor is powered；
Charging interface can access electric energy and charge for battery；
Main control module, for controlling straight-flow system；
Power supply handover module, it is master control mould that the power supply that charging interface is accessed can be made when battery capacity is less than predetermined threshold value
Block is powered；
Wherein, power supply handover module is electrically connected with charging interface, battery and main control module respectively.
Further, which further includes：
Charge management module is conveyed to the electric energy of battery for controlling charging interface；
Motor control module, for controlling whether battery is motor power supply；
Wherein, charge management module is electrically connected with charging interface, and motor control module is electrically connected with motor.
Further, one first electronic switch is equipped between charge management module and battery；First electronic switch includes：The
One control terminal, is electrically connected with main control module.
Further, motor control module includes：Trigger, for user's operation to control whether to start motor；
Second electronic switch, for master control module controls motor；Motor, trigger and the series connection of the second electronic switch, second
Electronic switch includes：Second control terminal, is electrically connected with main control module.Trigger, motor, the second electronic switch, current of electric
Sampling module is connected
Further, motor control module further includes：Current of electric acquisition module can acquire the electric current of motor and it is anti-
It feeds main control module；Current of electric acquisition module is electrically connected with main control module.
Further, electric tool further includes：Detection module can detect the electrical parameter of battery and will detect that electrical parameter is sent out
Give main control module；Detection module distinguishes battery and main control module electrical connection.
Further, electric tool further includes：Electricity quantity display module, can be under the control of main control module according to detection module
Testing result show battery dump energy；Electricity quantity display module is electrically connected with main control module.
Further, power supply handover module includes：Battery circuit is connected electrically between battery and main control module；
Interface circuit is connected electrically between charging interface and main control module；Battery circuit include at least one from battery to
The diode of main control module forward conduction；Charging circuit includes at least one from charging interface to the two of main control module forward conduction
Pole pipe.
Further, charge management module includes：First current-limiting resistance can limit maximum current value when battery charging；
Second current-limiting resistance, can specific battery charge cutoff electric current；Managing chip, respectively with the first current-limiting resistance, the second current-limiting resistance
Electrical connection.
The invention has the beneficial effects that：Realize that charging interface is directly when battery capacity is low by power supply handover module
Main control module charges, and enables electric tool normal operation charging procedure in charging, improves the reliability of circuit and ensure that
Charging safety.
Description of the drawings
Fig. 1 is the circuit block diagram of one preferred embodiment of electric tool of the present invention；
Fig. 2 is the circuit block diagram of part concrete scheme in Fig. 1.
Specific implementation mode
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Shown in referring to Figures 1 and 2, electric tool of the invention includes：Motor, battery, charging interface, main control module, electricity
Source handover module.
Wherein, battery at least can be that motor is powered；Charging interface can access electric energy and charge for battery；Main control module is for controlling
Straight-flow system processed；The power supply that power supply handover module can be such that charging interface is accessed when battery capacity is less than predetermined threshold value is master control
Module for power supply；Power supply handover module is electrically connected with charging interface, battery and main control module respectively.
Preferably, power supply handover module includes：
Battery circuit is connected electrically between battery and main control module；
Interface circuit is connected electrically between charging interface and main control module；
Battery circuit includes at least one from battery to the diode of main control module forward conduction；
Charging circuit includes at least one from charging interface to the diode of main control module forward conduction；
The two diode low-pressure ends link together.
When battery undervoltage, charging interface（Such as USB interface）Voltage it is relatively high, then the diode of battery circuit makes electricity
Pond is not turned on to main control module direction, on the contrary, when charging interface does not access power supply, the diode conducting in battery circuit makes
Battery is master control module for power supply.Preferably, charging interface is USB interface, main control module includes at least a MCU chip.
More specifically, electric tool of the invention further includes：Charge management module and motor control module.
Wherein Charge Management is for controlling the electric energy that charging interface is conveyed to battery；Motor control module, for controlling electricity
Whether pond is motor power supply；Charge management module is electrically connected with charging interface, and motor control module is electrically connected with motor.
Preferably, charge management module includes：First current-limiting resistance can limit maximum current when battery charging
Value；Second current-limiting resistance, can specific battery charge cutoff electric current；Managing chip, it is electric with the first current-limiting resistance, the second current limliting respectively
Resistance electrical connection.
Preferably, one first electronic switch is equipped between charge management module and battery；First electronic switch packet
It includes：First control terminal, first control terminal are electrically connected with main control module.The control terminal energy of the first electronic switch of master control module controls
Make its disconnect or connection charge management module and battery between being electrically connected, to make master control module controls charging interface whether be
Battery charges.Preferably, the first electronic switch is either transistor switch can also fet switch.
Preferably, motor control module includes：Trigger, the second electronic switch and current of electric acquire mould
Block.Wherein, trigger for user's operation with control whether start motor；Second electronic switch is for master control module controls motor；
Motor is connected electrically between trigger and the second electronic switch.
Second electronic switch includes：Second control terminal, is electrically connected with main control module.It is similar with the first electronic switch, second
Electronic switch is controlled by master switch, and can disconnect makes motor operation or stopping with being connected to.User and main control module can be with
The operation of motor is controlled by trigger and the second electronic switch respectively.Preferably, the second electronic switch is either crystalline substance
Body pipe switch can also fet switch.
Current of electric acquisition module can acquire the electric current of motor and be fed back to main control module；Current of electric acquisition module
It is electrically connected with main control module.Specifically, current of electric acquisition module can be obtained by acquiring the voltage of the resistance of fixed resistance value
Obtain current information.
Preferably, electric tool further includes：Detection module can detect the electrical parameter of battery and will detect electric ginseng
Number is sent to main control module；Detection module distinguishes battery and main control module electrical connection.Detection module is mainly used for realizing to electricity
When Cross prevention and the electricity display in pond corresponding electrical parameter information is provided for main control module.
Preferably, electric tool further includes：Electricity quantity display module, can be under the control of main control module according to detection
The testing result of module shows battery dump energy；Electricity quantity display module is electrically connected with main control module.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way above-described embodiment, all to be obtained by the way of equivalent substitution or equivalent transformation
Technical solution is all fallen in protection scope of the present invention.
Claims (8)
1. a kind of electric tool, which is characterized in that including：
Motor；
Battery at least can be that the motor is powered；
Charging interface can access electric energy and charge for the battery；
Main control module, for controlling the straight-flow system；
Power supply handover module can make the power supply that the charging interface is accessed for institute when the battery capacity is less than predetermined threshold value
State main control module power supply；
Wherein, the power supply handover module is electrically connected with the charging interface, the battery and the main control module respectively；It is described
Power supply handover module includes：
Battery circuit is connected electrically between the battery and the main control module；
Interface circuit is connected electrically between the charging interface and the main control module；
The battery circuit includes at least one from the battery to the diode of the main control module forward conduction；
The charging circuit includes at least one from the charging interface to the diode of the main control module forward conduction；
The charging interface is USB interface；
The electric tool further includes charge management module, and the electric energy of the battery is conveyed to for controlling the charging interface；
The charge management module is electrically connected with the charging interface；
The charge management module includes：
First current-limiting resistance can limit the maximum current value when battery charging；
Second current-limiting resistance can specify the battery charge cutoff electric current；
Managing chip is electrically connected with first current-limiting resistance, the second current-limiting resistance respectively.
2. electric tool according to claim 1, which is characterized in that further include：
Motor control module, for controlling whether the battery is the motor power supply；
Wherein, the motor control module is electrically connected with the motor.
3. electric tool according to claim 1, which is characterized in that set between the charge management module and the battery
There is one first electronic switch；First electronic switch includes：First control terminal is electrically connected with the main control module.
4. electric tool according to claim 2, which is characterized in that the motor control module includes：
Trigger, for user's operation to control whether to start the motor；
Second electronic switch, for motor described in the master control module controls；
The motor, the trigger and second electronic switch series connection, second electronic switch include：
Second control terminal is electrically connected with the main control module.
5. electric tool according to claim 2, which is characterized in that the motor control module further includes：
Current of electric acquisition module can acquire the electric current of the motor and be fed back to the main control module；
The current of electric acquisition module is electrically connected with the main control module.
6. electric tool according to claim 5, which is characterized in that the motor control module includes：
Trigger, for user's operation to control whether to start the motor；
Second electronic switch, for motor described in the master control module controls；
The motor is connected electrically between the trigger and the second electronic switch, and second electronic switch includes：
Second control terminal is electrically connected with the main control module；
The trigger, motor, the second electronic switch, the series connection of current of electric sampling module.
7. according to the electric tool described in claim 1 to 6 any one, which is characterized in that the electric tool further includes:
Detection module can detect the electrical parameter of the battery and will detect that electrical parameter is sent to the main control module；
The detection module distinguishes the battery and main control module electrical connection.
8. electric tool according to claim 7, which is characterized in that the electric tool further includes：
Electricity quantity display module can show the electricity under the control of the main control module according to the testing result of the detection module
Pond remaining capacity；
The electricity quantity display module is electrically connected with the main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522787.8A CN105529970B (en) | 2014-09-30 | 2014-09-30 | Electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522787.8A CN105529970B (en) | 2014-09-30 | 2014-09-30 | Electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105529970A CN105529970A (en) | 2016-04-27 |
| CN105529970B true CN105529970B (en) | 2018-10-12 |
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ID=55772010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410522787.8A Active CN105529970B (en) | 2014-09-30 | 2014-09-30 | Electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105529970B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110856439B (en) * | 2018-06-01 | 2023-05-09 | 苏州宝时得电动工具有限公司 | Electric tool |
| CN113243893A (en) * | 2021-07-15 | 2021-08-13 | 广东省大湾区集成电路与系统应用研究院 | Defecation frequency detection device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743147A (en) * | 2004-09-01 | 2006-03-08 | 本田技研工业株式会社 | Charging system for legged walking robot |
| CN1967964A (en) * | 2005-11-17 | 2007-05-23 | 松下电工株式会社 | Rechargeable battery pack for a power tool |
| CN101622106A (en) * | 2007-03-20 | 2010-01-06 | 日立工机株式会社 | Cordless power tool and accommodation case |
| CN104037833A (en) * | 2013-03-07 | 2014-09-10 | 现代自动车株式会社 | Power supply system and method for charging battery of vehicle |
-
2014
- 2014-09-30 CN CN201410522787.8A patent/CN105529970B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743147A (en) * | 2004-09-01 | 2006-03-08 | 本田技研工业株式会社 | Charging system for legged walking robot |
| CN1967964A (en) * | 2005-11-17 | 2007-05-23 | 松下电工株式会社 | Rechargeable battery pack for a power tool |
| CN101622106A (en) * | 2007-03-20 | 2010-01-06 | 日立工机株式会社 | Cordless power tool and accommodation case |
| CN104037833A (en) * | 2013-03-07 | 2014-09-10 | 现代自动车株式会社 | Power supply system and method for charging battery of vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105529970A (en) | 2016-04-27 |
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Address after: 211106 No. 529, 159, Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing Quanfeng Technology Co.,Ltd. Address before: 211106, No. 159, general road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: NANJING CHERVON INDUSTRY Co.,Ltd. |
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