CN207504621U - A kind of electric tool - Google Patents
A kind of electric tool Download PDFInfo
- Publication number
- CN207504621U CN207504621U CN201721228840.9U CN201721228840U CN207504621U CN 207504621 U CN207504621 U CN 207504621U CN 201721228840 U CN201721228840 U CN 201721228840U CN 207504621 U CN207504621 U CN 207504621U
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- China
- Prior art keywords
- series excited
- excited machine
- electric tool
- power
- control unit
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Abstract
The utility model provides a kind of electric tool, including：Housing, series excited machine, detection series excited machine momentary load simultaneously generate the load detecting unit of momentary load signal, include the DC power supply and power control unit of at least two groups battery packs, and the power control unit receives the momentary load signal that load detecting unit is sent；When momentary load signal meets preset condition, judge that instantaneous overload occurs in series excited machine；In the sampling time period of preset length, when the cumulative time of series excited machine instantaneous overload reaching preset duration, at least two groups of battery pack parallel connections described in power control unit control are powered for series excited machine；When the cumulative time of series excited machine instantaneous overload being not up to preset duration, one at least two groups of battery packs described in power control unit control is powered for series excited machine.Compared to the prior art, the utility model electric tool can be powered using DC power supply, could be used that AC power is powered.
Description
Technical field
The utility model is related to a kind of electric tools.
Background technology
At present, electric tool generally includes two classes, and one kind is powered using AC power, another kind of to be supplied using DC power supply
Electricity.The electric tool powered using AC power is typically only capable to use in the place nearer apart from power outlet, and for mowing
For the wider electric tool of the working ranges such as machine, snowplough, need to be equipped with DC power supply power supply, so as to far from power supply
The place of socket uses.However, the electric energy storage of DC power supply is limited.When electric tool is nearer from AC Power supply socket
Local work when, electric tool can in this case by DC power supply power switching be AC power power, for making
It is significant for user.
In addition, existing electric tool usually only one piece of battery pack.When electric tool overloads, the electricity of the electric tool
The output current of Chi Bao will increase, so that the battery pack overheats, and then seriously affect the use longevity of the battery pack
Life.
In view of the above problems, it is necessary to provide a kind of new electric tool to solve above-mentioned to be.
Utility model content
In view of the deficiencies of the prior art, the technical issues of the utility model solves is to provide a kind of electric tool, this is electronic
Tool can be powered using DC power supply, could be used that AC power is powered, and the DC power supply is in the electric tool
Output power can be increased during overload, to protect the DC power supply.
In order to solve the above technical problems, what the technical solution of the utility model was realized in：
A kind of electric tool, including：Housing；Series excited machine, the series excited machine are contained in the housing；Load detecting
Unit, the load detecting unit detect the momentary load of the series excited machine and generate momentary load signal；DC power supply, institute
It states DC power supply and includes at least two groups of battery packs；And power control unit, the power control unit receive the load inspection
Survey the momentary load signal that unit is sent；When momentary load signal meets preset condition, judge that wink occurs in the series excited machine
When overload；In the sampling time period of preset length, reach preset duration when the cumulative time of the series excited machine instantaneous overload
When, at least two groups of battery pack parallel connections described in the power control unit control are powered for the series excited machine；When series excitation electricity
When the cumulative time of machine instantaneous overload is not up to preset duration, at least two groups of battery packs described in the power control unit control
One for the series excited machine power.
Further, the electric tool also has overload light；Described in being controlled when the power control unit at least
When two groups of battery pack parallel connections are powered for the series excited machine, the overload light is lighted.
Further, the electric tool also have battery detection unit and with the one-to-one battery of the battery pack
Indicator light；When the battery detection unit detects that the voltage of battery pack is less than preset value, with the corresponding electricity of the battery pack
Pond indicator light is lighted.
Further, the load detecting unit is the voltage detecting list for detecting the instantaneous operating voltage of series excited machine
Member, the preset condition are less than preset voltage value for instantaneous operating voltage.
Further, the load detecting unit is the velocity measuring list for detecting the instantaneous rotary speed of series excited machine
Member, the preset condition are less than pre-set velocity value for instantaneous rotary speed.
Further, instantaneous operating current signal of the momentary load signal for the series excited machine, the default item
Part is higher than pre-set current value for instantaneous operating current.
Further, the initial time of sampling time period is random time point.
Further, the ratio of preset duration and sampling time period is not less than 0.4.
Further, when one at least two groups of battery packs described in power control unit control is series excitation electricity
When machine is powered, if currently the Battery Indicator Light for the battery pack of series excited machine power supply is lighted, the power control unit
The battery pack is controlled to stop powering for the series excited machine, and another battery pack is controlled to power for the series excited machine.
Further, the electric tool also has AC power；When the AC power is powered for the series excited machine
When, the power control unit controls the AC power to charge for the DC power supply simultaneously.
The beneficial effects of the utility model are：Compared to the prior art, the utility model electric tool can use direct current
Power supply power, could be used that AC power power, and the DC power supply can increase when the electric tool overloads it is defeated
Go out power, to protect the DC power supply.
Description of the drawings
Fig. 1 show the module diagram of the utility model electric tool.
Specific embodiment
It is new to this practicality below in conjunction with the accompanying drawings in order to make the purpose of this utility model, technical solution and advantage clearer
The specific embodiment of type is described in detail.The example of these preferred embodiments is illustrated in the accompanying drawings.In attached drawing
The embodiment of the utility model that is shown and describing with reference to the accompanying drawings is only exemplary, and the utility model is not limited to
These embodiments.
Here, it should also be noted that, in order to avoid because having obscured the utility model during unnecessary details, in the accompanying drawings
The structure and/or processing step closely related with the embodiment of the utility model are illustrate only, and is omitted and the utility model
The little other details of relationship.
In addition, it should also be noted that, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property include so that process, method, article or equipment including a series of elements not only include those elements, but also
Further include other elements that are not explicitly listed or further include for this process, method, article or equipment it is intrinsic
Element.
Refering to Figure 1, the utility model electric tool 100 includes housing (not shown), is contained in the housing
Series excited machine 10, load detecting unit 20, DC power supply 30, AC power 40 and power control unit 50.
Refering to Figure 1, the load detecting unit 20 detects the momentary load of the series excited machine 10 and generates wink
When load signal.It is the series excitation that the power control unit 50, which controls one in the DC power supply 30, AC power 40,
Motor 10 is powered.The DC power supply 30 include at least two groups of battery packs (not shown), battery detection unit 31 and with it is described
The one-to-one Battery Indicator Light of battery pack (not shown).When the battery detection unit 31 detects that the voltage of battery pack is less than
It during preset value, is lighted with the corresponding Battery Indicator Light of the battery pack, to prompt the user battery pack not enough power supply.When
When the AC power 40 is powered for the series excited machine 10, the power control unit 50 controls the AC power 40 simultaneously
It charges for the DC power supply 30, to protect the DC power supply 30.The power control unit 50 receives the load detecting
The momentary load signal that unit 20 is sent.
When momentary load signal meets preset condition, judge that instantaneous overload occurs in the series excited machine 10.In default length
In the sampling time period of degree, when the cumulative time of 10 instantaneous overload of series excited machine reaching preset duration, the power supply control
Unit 50 processed controls at least two groups of battery pack parallel connections to power for the series excited machine 10.So set, it can not increase
While the current output value of single battery packet, meet the series excited machine 10 to high-power demand, so as to effectively protect
The battery pack is protected, the battery pack is avoided largely to generate heat when overload, so as to influence the service life of the battery pack.
When the cumulative time of 10 instantaneous overload of series excited machine being not up to preset duration, the power control unit 50 controls described
One at least two groups of battery packs is powered for the series excited machine 10.The load detecting unit 20 can be the detection string
Swash the speed of the voltage detection unit of 10 instantaneous operating voltage of motor or the detection 10 instantaneous rotary speed of series excited machine
Spend the current detecting unit of detection unit or the detection 10 instantaneous operating current of series excited machine.When the load inspection
When surveying unit 20 as voltage detection unit, the preset condition is less than preset voltage value for instantaneous operating voltage；When the load
When detection unit 20 is speed detection unit, the preset condition is less than pre-set velocity value for instantaneous rotary speed；When described negative
When carrying detection unit 20 as current detecting unit, the preset condition is higher than pre-set current value for instantaneous operating current.
Preferably, the electric tool 100 also has overload light (not shown).When the power control unit 50 is controlled
When at least two groups of battery pack parallel connections are powered for the series excited machine 10 described in system, the overload light is lighted, to prompt to use
The electric tool 100 is in overload to person at this time.
Preferably, the initial time of sampling time period is random time point, and the ratio of preset duration and sampling time period is not
Less than 0.4.
Preferably, it is series excitation electricity when the power control unit 50 controls one at least two groups of battery packs
When machine 10 is powered, if currently the Battery Indicator Light for the battery pack of the series excited machine 10 power supply is lighted, the power supply control
Unit 50 controls the battery pack to stop powering for the series excited machine 10, and another battery pack is controlled to be supplied for the series excited machine 10
Electricity.
Compared to the prior art, the utility model electric tool 100 can be powered using DC power supply, could be used that exchange
Power supply is powered, and the DC power supply can increase output power when the electric tool overloads, to protect the direct current
Power supply.
In particular, for those of ordinary skill in the art, made under the introduction of the utility model
For the equivalence changes of the utility model, should be included in the range that present utility model application the scope of the claims is advocated.
Claims (10)
1. a kind of electric tool, which is characterized in that including：
Housing；
Series excited machine, the series excited machine are contained in the housing；
Load detecting unit, the load detecting unit detect the momentary load of the series excited machine and generate momentary load letter
Number；
DC power supply, the DC power supply include at least two groups of battery packs；And
Power control unit, the power control unit receive the momentary load signal that the load detecting unit is sent；Work as wink
When load signal when meeting preset condition, judge that instantaneous overload occurs in the series excited machine；
In the sampling time period of preset length, when the cumulative time of the series excited machine instantaneous overload reaching preset duration,
At least two groups of battery pack parallel connections described in the power control unit control are powered for the series excited machine；When the series excited machine wink
When cumulative time for overloading when being not up to preset duration, one at least two groups of battery packs described in the power control unit control
It is a to power for the series excited machine.
2. electric tool as described in claim 1, it is characterised in that：The electric tool also has overload light；Work as institute
When stating at least two groups of battery pack parallel connections described in power control unit control as series excited machine power supply, the overload light point
It is bright.
3. electric tool as described in claim 1, it is characterised in that：The electric tool also have battery detection unit and
With the one-to-one Battery Indicator Light of the battery pack；When the battery detection unit detects the voltage of battery pack less than default
During value, lighted with the corresponding Battery Indicator Light of the battery pack.
4. electric tool as described in claim 1, it is characterised in that：The load detecting unit is detects the series excited machine
The voltage detection unit of instantaneous operating voltage, the preset condition are less than preset voltage value for instantaneous operating voltage.
5. electric tool as described in claim 1, it is characterised in that：The load detecting unit is detects the series excited machine
The speed detection unit of instantaneous rotary speed, the preset condition are less than pre-set velocity value for instantaneous rotary speed.
6. electric tool as described in claim 1, it is characterised in that：The momentary load signal is the wink of the series excited machine
When operating current signal, the preset condition for instantaneous operating current be higher than pre-set current value.
7. electric tool as described in claim 1, it is characterised in that：The initial time of sampling time period is random time point.
8. electric tool as described in claim 1, it is characterised in that：The ratio of preset duration and sampling time period is not less than
0.4。
9. electric tool as claimed in claim 3, it is characterised in that：When at least two groups described in power control unit control
One in battery pack when powering for the series excited machine, if the currently battery instruction for the battery pack of series excited machine power supply
Lamp is lighted, then the power control unit controls the battery pack to stop powering for the series excited machine, and control another battery pack
It powers for the series excited machine.
10. electric tool as described in claim 1, it is characterised in that：The electric tool also has AC power；When described
When AC power is powered for the series excited machine, it is the direct current that the power control unit controls the AC power simultaneously
It charges in source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721228840.9U CN207504621U (en) | 2017-09-21 | 2017-09-21 | A kind of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721228840.9U CN207504621U (en) | 2017-09-21 | 2017-09-21 | A kind of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207504621U true CN207504621U (en) | 2018-06-15 |
Family
ID=62498627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721228840.9U Active CN207504621U (en) | 2017-09-21 | 2017-09-21 | A kind of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207504621U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113498666A (en) * | 2021-06-22 | 2021-10-15 | 深圳拓邦股份有限公司 | Intelligent operation method of mower, controller and mower |
-
2017
- 2017-09-21 CN CN201721228840.9U patent/CN207504621U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113498666A (en) * | 2021-06-22 | 2021-10-15 | 深圳拓邦股份有限公司 | Intelligent operation method of mower, controller and mower |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.65-1 Xinggang Road, Zhonglou Economic Development Zone, Changzhou City, Jiangsu Province Patentee after: Gelibo (Jiangsu) Co., Ltd Address before: 213023 Jiangsu city in Changzhou Province Economic Development Zone Xingang Zhonglou District Tower Road No. 65 Patentee before: CHANGZHOU GLOBE Co.,Ltd. |
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| CP03 | Change of name, title or address |