CN207184137U - A kind of motor drive circuit - Google Patents
A kind of motor drive circuit Download PDFInfo
- Publication number
- CN207184137U CN207184137U CN201721031266.8U CN201721031266U CN207184137U CN 207184137 U CN207184137 U CN 207184137U CN 201721031266 U CN201721031266 U CN 201721031266U CN 207184137 U CN207184137 U CN 207184137U
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- battery pack
- circuit
- motor drive
- drive circuit
- utility
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Abstract
The utility model discloses a kind of motor drive circuit, two battery power discharges are used in the circuit, and in small gear, two battery packs are used in parallel, discharge simultaneously, in big gear, two batteries are used in series, and are discharged simultaneously, and it can discharge completely, solves the problems such as battery discharge is not exclusively in scheme one and inequality wastes, in addition, motor drive circuit described in the utility model also has the advantages that hardware implementation cost is low, scheme is simple.
Description
Technical field
It the utility model is related to field of circuit technology, more particularly to a kind of motor drive circuit.
Background technology
Hair scissors on the market and shaver mostly use battery powered at present, and with the different demands of consumer,
Gradually add the function that complete machine is divided into motor rotary speed OFF shelves, small shelves, big shelves.Small shelves can be that children get a haircut, and hair is tiny
It it requires that noise is small, endurance length；Big shelves can be that adult gets a haircut, and the thick thickness of hair requires powerful, currently in order to
Realize following two schemes of the gear adjustable function generally use：
Scheme one：As shown in figure 1, being the motor drive circuit structural representation of scheme one, its operation principle is to utilize switch
Scribing, to choose the voltage up to motor both ends, carry out the control of motor rotary speed, during OFF shelves, motor both ends no-voltage, small
During shelves, the voltage at motor both ends is the voltage at battery BAT1 both ends, and in big shelves, the voltage at motor both ends is battery BTA1 and electricity
The voltage of pond BAT2 series connection.
The advantages of scheme one is that device cost is low, shortcoming be complete machine when small shelves work, under battery BAT1 battery electric quantity
Drop, interior resistive is big, but battery BAT2 battery electric quantity and internal resistance are all unchanged, and the discharge time of small shelves is short.More seriously,
When complete machine is switched to big shelves, the internal resistance and electricity that cause two batteries mismatch, and battery BAT2 most of electricity can be by battery
BAT1 internal resistance consumes, and discharge time shortens.
Scheme two：As shown in Fig. 2 it is scheme two motor driving circuit structure schematic diagram, its operation principle is to utilize monolithic
Machine U1 carries out PWM controls, and in big shelves, motor standard-sized sheet, in small shelves, the dutycycle of motor only opens 50%, can equally reach
The purpose of friction speed.
The advantages of scheme two, internal resistance and the unmatched situation of electricity was not present in the electricity of battery, and electricity ratio scheme one is high, lacked
Point is hardware cost height, it is necessary to single-chip microcomputer and MOS transistor device；And in battery low-electricity quantity, the startup electricity of motor starting moment
Stream can drag down battery, cause monolithic processor resetting, and causing electricity, some is not utilized.In OFF shelves, single-chip microcomputer can still disappear
Consume part electricity.
Utility model content
The utility model embodiment provides a kind of motor drive circuit, to solve battery in existing motor drive circuit
The problem of electricity can not be fully utilized and cost is higher.
The utility model embodiment provides a kind of motor drive circuit, including battery pack, control circuit, motor, protection
Circuit and indicator light circuit；
The battery pack is connected with control circuit, and the protection circuit and indicator light circuit are in parallel with motor, the horse
Connected up to battery pack；
The control circuit is made up of the elastic sheet switch of four contact points, and two, left side shell fragment and two, right side shell fragment are not
It is connected.
Further, gone here and there as an executable scheme, the indicator light circuit by LED 1 and resistance R2A
Connection composition.
Further, it is made up of as an executable scheme, the protection circuit backward dioded D1 and electric capacity C1.
Further, it is made up of as an executable scheme, battery pack battery pack BAT1 and battery pack BAT2.
The utility model has the beneficial effect that：
The utility model embodiment provides a kind of motor drive circuit, in the circuit using two battery power discharges,
In small gear, two battery packs are used in parallel, discharge simultaneously, and in big gear, two batteries are used in series, and are discharged simultaneously,
And can discharge completely, solve the problems such as battery discharge is not exclusively in scheme one and inequality wastes, in addition, this practicality is new
Motor drive circuit described in type also has the advantages that hardware implementation cost is low, scheme is simple.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly introduced, it should be apparent that, drawings in the following description are only some implementations of the present utility model
Example, on the premise of not paying creative work, can also be according to these accompanying drawings for one of ordinary skill in the art
Obtain other accompanying drawings.
Fig. 1 show the structural representation of the scheme one of motor drive circuit in the prior art；
Fig. 2 show the structural representation of the scheme two of motor drive circuit in the prior art；
Fig. 3 show the structural representation of the motor drive circuit described in the utility model embodiment；
Fig. 4 show the structural representation during motor drive circuit OFF gears described in the utility model embodiment；
Fig. 5 show structural representation during the small gear of motor drive circuit described in the utility model embodiment；
Fig. 6 show structural representation during the big gear of motor drive circuit described in the utility model embodiment.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this practicality
It is new to be described in further detail, it is clear that described embodiment is only the utility model part of the embodiment, rather than
Whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work
Under the premise of all other embodiment for being obtained, belong to the scope of the utility model protection.
The utility model embodiment provides a kind of motor drive circuit, as shown in figure 3, it is the utility model embodiment
The structural representation of described motor drive circuit, the drive circuit include battery pack 31, control circuit 32, motor 33, guarantor
Protection circuit 34 and indicator light circuit 35；
The battery pack 31 is connected with control circuit 32, the protection circuit 34 and indicator light circuit 35 with motor 33 simultaneously
Connection, the motor 33 are connected with battery pack 31.
Specifically, the control circuit 32 is made up of the elastic sheet switch of four contact points, and two, left side shell fragment and right side two
Individual shell fragment is not attached to.Specific annexation can refer to Fig. 3.
Specifically, gone here and there as an executable scheme, the indicator light circuit 35 by LED 1 and resistance R2A
Connection composition.
Specifically, it is made up of as an executable scheme, the protection circuit 34 backward dioded D1 and electric capacity C1.
Specifically, it is composed in series as an executable scheme, battery pack 31 by battery BAT1 and battery BAT2.
Certainly more intuitively circuit connecting relation is also needed with reference to Fig. 3 motor drive circuit in the utility model embodiment
Specific attachment structure.Illustratively motor described in the utility model is distinguished successively below as OFF gears, small gear, big gear
The operation principle of drive circuit.
As shown in figure 4, in OFF gears, the elastic sheet switch scribing of four contact points is in two shell fragments close to battery pack side
Link position at, such as dotted line frame out position in Fig. 4, not connected to form current loop, battery does not discharge, and motor both end voltage is
Zero.
Further, as shown in figure 5, in small gear, the elastic sheet switch scribing of four contact points is in middle two shell fragments
At link position, as dotted line frame out position, current trend are in Fig. 5：The electric current of battery pack BAT1 positive pole outflow passes through all the way
Motor, then pass through the negative pole that right side elastic sheet switch returns to battery pack BAT1, another way passes through indicator light circuit, then by right side bullet
Piece switchs the negative pole for returning to battery pack BAT1, and some electric current is used to charge to electric capacity C1.And battery pack BAT2 positive pole
The electric current of outflow is all the way by left side elastic sheet switch, then returns to by motor battery pack BAT2 negative pole, and another way passes through left side
Elastic sheet switch, then battery pack BAT2 negative pole is returned to by indicator light circuit, some is used to give electric capacity C1 chargings.So as to
The used in parallel of battery pack BAT1 and battery pack BAT2 is realized, discharges simultaneously, takes full advantage of electricity.
Further, as shown in fig. 6, in big gear, the elastic sheet switch scribing of four contact points is close to electric capacity C1 sides
At the link position of two shell fragments, as dotted line frame out position, current trend are in Fig. 6：The electricity of battery pack BAT1 positive pole outflow
Stream returns to battery pack BAT2 negative pole by motor all the way, and another way passes through indicator light circuit, returns to battery pack BAT2 negative pole,
Some electric current is used to charge to electric capacity C1.And the electric current of battery pack BAT2 positive pole outflow passes through left side shell fragment and opened all the way
Close, then pass through the negative pole that right side elastic sheet switch returns to battery pack BAT1.It is achieved thereby that battery pack BAT1 and battery pack BAT2
It is used in series, discharges simultaneously, takes full advantage of electricity.In addition, the utility model embodiment need not be equipped with single-chip microcomputer, circuit letter
It is single, circuit cost is reduced well.
Have again the motor drive circuit described in the utility model embodiment be applicable to hair scissors and shaver etc. equipment,
The utility model embodiment is not construed as limiting to this.
It should be noted that elastic sheet switch of the control circuit described in the utility model except four contact points can be used
It is outer to realize, can also use the toggle switch of duplex, left and right side is each independently realized, the utility model embodiment to this not
It is construed as limiting.
The utility model embodiment provides a kind of motor drive circuit, in the circuit using two battery power discharges,
In small gear, two battery packs are used in parallel, discharge simultaneously, and in big gear, two batteries are used in series, and are discharged simultaneously,
And can discharge completely, solve the problems such as battery discharge is not exclusively in scheme one and inequality wastes, in addition, this practicality is new
Motor drive circuit described in type also has the advantages that hardware implementation cost is low, scheme is simple.
Although having been described for preferred embodiment of the present utility model, those skilled in the art once know substantially
Creative concept, then other change and modification can be made to these embodiments.So appended claims are intended to be construed to wrap
Include preferred embodiment and fall into having altered and changing for the scope of the utility model.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (4)
1. a kind of motor drive circuit, it is characterised in that including battery pack, control circuit, motor, protection circuit and indicator lamp electricity
Road；
The battery pack is connected with control circuit, and the protection circuit and indicator light circuit are in parallel with motor, the motor with
Battery pack is connected；
The control circuit is made up of the elastic sheet switch of four contact points, and two, left side shell fragment and two, right side shell fragment not phase
Even.
2. motor drive circuit as claimed in claim 1, it is characterised in that the indicator light circuit is by LED 1
It is composed in series with resistance R2A.
3. motor drive circuit as claimed in claim 1, it is characterised in that the protection circuit is by backward dioded D1 and electricity
Hold C1 compositions.
4. motor drive circuit as claimed in claim 1, it is characterised in that battery pack is by battery pack BAT1 and battery pack BAT2
It is composed in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721031266.8U CN207184137U (en) | 2017-08-17 | 2017-08-17 | A kind of motor drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721031266.8U CN207184137U (en) | 2017-08-17 | 2017-08-17 | A kind of motor drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207184137U true CN207184137U (en) | 2018-04-03 |
Family
ID=61739831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721031266.8U Active CN207184137U (en) | 2017-08-17 | 2017-08-17 | A kind of motor drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207184137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343399A (en) * | 2018-10-22 | 2019-02-15 | 浙江亚尚智能科技有限公司 | The motor control module of shaver control circuit |
-
2017
- 2017-08-17 CN CN201721031266.8U patent/CN207184137U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343399A (en) * | 2018-10-22 | 2019-02-15 | 浙江亚尚智能科技有限公司 | The motor control module of shaver control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Motor driving circuit and mobile terminal Effective date of registration: 20181219 Granted publication date: 20180403 Pledgee: Xiamen finance Company limited by guarantee Pledgor: Xiamen Polytron Technologies Inc Registration number: 2018990001233 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |