CN208890699U - A kind of motor controller with discharging function - Google Patents
A kind of motor controller with discharging function Download PDFInfo
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- CN208890699U CN208890699U CN201821710407.3U CN201821710407U CN208890699U CN 208890699 U CN208890699 U CN 208890699U CN 201821710407 U CN201821710407 U CN 201821710407U CN 208890699 U CN208890699 U CN 208890699U
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Abstract
The utility model provides a kind of motor controller with discharging function, including microcontroller, energy storage filter capacitor and discharge circuit, discharge circuit includes the communication switch module being linked in sequence, acquisition module, discharge switch module and discharge module, the input terminal of communication switch module is connect with microcontroller, connecting node between communication switch module and acquisition module is connect with external battery pack, the output end of discharge module is connect with energy storage filter capacitor, communication switch module is used to disconnect the connection of microcontroller and acquisition module, acquisition module is for giving discharge switch module offer Continuity signal after collecting external battery pack and motor controller disconnection, discharge switch module is used to make discharge module discharge according to the Continuity signal that acquisition module provides, discharge module is used to carry out energy storage filter capacitor Electric discharge.The application is discharged controller internal capacitance using discharge circuit, specific at low cost, high reliablity and controller feature small in size.
Description
Technical field
The utility model relates to device for controlling power tool technical fields, and in particular to a kind of motor with discharging function
Controller.
Background technique
With electric tool universalness, what electric tool on the market used now is all direct current generator.Straight electricity motor electricity
Source is provided by battery, i.e., provides direct current to product by battery.Motor is in the driving product course of work, Motor Control
Device is promoting electric motor operation.Currently, motor controller is to meet EN/IEC60335-1 standard test requirements, to prevent
After battery pack disconnects (disconnecting by manual operation), the storing electricity of motor controller internal capacitance is flowed backward to terminals
Son all disconnects the connection between motor controller and connecting terminal using relay mode.But the hair of the utility model
Bright people has found after study, too high using relay mode cost, and relay antivibration moment, the contact of relay is easy to burn out,
And the area that relay occupies in the pcb is big.
Utility model content
For the existing connection disconnected using relay mode between motor controller and connecting terminal, there are costs
Too high, relay antivibration moment, the contact of relay is easy to burn out, and the big technology of relay footprint area in PCB is asked
Topic, the utility model provide a kind of motor controller with discharging function.
In order to solve the above-mentioned technical problem, the utility model uses the following technical solution:
A kind of motor controller with discharging function, including microcontroller, energy storage filter capacitor and electric discharge electricity
Road, the discharge circuit include communication switch module, acquisition module, discharge switch module and the discharge module being linked in sequence, institute
The one end for stating communication switch module is connect with microcontroller, the connection section between the communication switch module and acquisition module
Point is connect with external battery pack, and the output end of the discharge module is connect with energy storage filter capacitor, and the communication switch module is used
In the connection for disconnecting microcontroller and acquisition module, the acquisition module is for collecting external battery pack and motor control
Device processed gives discharge switch module offer Continuity signal after disconnecting, and the discharge switch module according to what acquisition module provided for leading
Messenger makes discharge module discharge, and the discharge module is for discharging to energy storage filter capacitor.
Compared with prior art, the motor controller provided by the utility model with discharging function, including electric discharge electricity
Road, discharge circuit include that the communication switch module being linked in sequence, acquisition module, discharge switch module and discharge module, communication are opened
It closes module and is used to disconnect the connection of microcontroller and acquisition module, acquisition module is for collecting external battery pack and electronic
Machine controller gives discharge switch module offer Continuity signal after disconnecting, and discharge switch module according to what acquisition module provided for leading
Messenger makes discharge module discharge, and discharge module is for discharging to energy storage filter capacitor.Therefore, the application is to prevent
Battery pack disconnection after, the storing electricity of motor controller internal capacitance is flowed backward to connecting terminal, using discharge circuit come
Controller internal capacitance (i.e. energy storage filter capacitor) is discharged, meets EN/IEC60335-1 standard for motor control
The test request of device processed, and relative to existing relay mode, this discharge circuit is at low cost, high reliablity, has the electric discharge
The controller of circuit is small in size.
Further, the communication switch module includes photo-coupler and diode D1, and photo-coupler input terminal U1A's is negative
Pole is connect with battery pack cathode, and the anode of photo-coupler input terminal U1A meets power supply VCC, optocoupler output U1B through resistance R2
Emitter meet the anode of microcontroller and diode D1, the collector of optocoupler output U1B and acquisition module and two
The cathode of pole pipe D1 connects.
Further, the communication switch module includes triode Q4, resistance R9 and PMOS tube Q5, the base of the triode Q4
Pole is connect by resistance R10 connection power supply VCC, emitter with battery pack cathode, and collector passes through resistance R9's and PMOS tube Q5
Grid connection, the drain electrode of PMOS tube Q5 connect microcontroller, and the source electrode of PMOS tube Q5 is connect with acquisition module.
Further, the acquisition module includes resistance R1, zener diode DZ1 and DZ2, resistance R4, resistance R7 and NMOS
Pipe Q1, one end of the resistance R1 are connect with battery pack anode, the cathode and communication switch mould of the other end and zener diode DZ1
Block connection, anode and the cathode of zener diode DZ2, one end of resistance R7 and the NMOS tube Q1 of the zener diode DZ1
Grid connection, the source electrode of the anode of the zener diode DZ2, the other end of resistance R7 and NMOS tube Q1 is and battery pack
Cathode connection, the drain electrode of the NMOS tube Q1 are connect through resistance R4 with discharge switch module, the resistance R1 and zener diode
Connecting node between DZ1 is equipped with battery pack communication port.
Further, the discharge switch module includes resistance R3, triode Q3 and resistance R5, one end of the resistance R3 and
The emitter of triode Q3 is connect with battery pack anode, the other end of the resistance R3 and the base stage of triode Q3 and acquisition mould
Block connection, the collector of the triode Q3 are connect through resistance R5 with discharge module.
Further, the discharge module includes resistance R8, zener diode DZ3, NMOS tube Q2 and resistance R6, the resistance
The grid of one end of R8, the cathode of zener diode DZ3 and NMOS tube Q2 is connect with discharge switch module, the pressure stabilizing two
The source electrode of the anode of pole pipe DZ3, the other end of resistance R8 and NMOS tube Q2 is connect with battery pack cathode, the NMOS tube Q2
Drain electrode connect through resistance R6 with battery pack anode, it is positive that the anode of the energy storage filter capacitor connect battery pack with resistance R6
One end connection, the cathode of the energy storage filter capacitor connect the source electrode connection of battery pack cathode with NMOS tube Q2.
Detailed description of the invention
Fig. 1 is the motor controller functional block diagram provided by the utility model with discharging function.
Fig. 2 is a kind of conspectus of discharge circuit in motor controller provided by the utility model.
Fig. 3 is the conspectus of another discharge circuit in motor controller provided by the utility model.
In figure, 1, microcontroller；2, energy storage filter capacitor；3, discharge circuit；31, communication switch module；32, it acquires
Module；33, discharge switch module；34, discharge module；4, battery pack.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
In the description of the present invention, it should be understood that term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness
The side of the instructions such as degree ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description the utility model and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it should not be understood as limiting the present invention.In the description of the present invention, unless otherwise indicated, " multiple " contain
Justice is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
It please refers to shown in Fig. 1, the utility model provides a kind of motor controller with discharging function, including microcontroller
Device MCU1, energy storage filter capacitor 2 and discharge circuit 3, the discharge circuit 3 include the communication switch module 31 being linked in sequence, adopt
Collect module 32, discharge switch module 33 and discharge module 34, one end of the communication switch module 31 and microcontroller 1 connect
It connects, the connecting node between the communication switch module 31 and acquisition module 32 is connect with external battery pack 4, the discharge module
34 output end is connect with energy storage filter capacitor 2, and the communication switch module 31 is for disconnecting microcontroller 1 and acquisition mould
The connection of block 32, the acquisition module 32 is for collecting after external battery pack 4 and motor controller disconnect to discharge switch
Module 33 provides Continuity signal, and the discharge switch module 33 is used to make the mould that discharges according to the Continuity signal that acquisition module 32 provides
Block 34 discharges, and the discharge module 34 is for discharging to energy storage filter capacitor 2.Wherein, the microcontroller 1
It is the prior art with energy storage filter capacitor 2, the microcontroller 1 can specifically use the existing list of model STM32F030
Piece machine is realized, as the function in existing motor controller identical, thus details are not described herein.
Compared with prior art, the motor controller provided by the utility model with discharging function, including electric discharge electricity
Road, discharge circuit include that the communication switch module being linked in sequence, acquisition module, discharge switch module and discharge module, communication are opened
It closes module and is used to disconnect the connection of microcontroller and acquisition module, acquisition module is for collecting external battery pack and electronic
Machine controller gives discharge switch module offer Continuity signal after disconnecting, and discharge switch module according to what acquisition module provided for leading
Messenger makes discharge module discharge, and discharge module is for discharging to energy storage filter capacitor.Therefore, the application is to prevent
Battery pack disconnection after, the storing electricity of motor controller internal capacitance is flowed backward to connecting terminal, using discharge circuit come
Controller internal capacitance (i.e. energy storage filter capacitor) is discharged, meets EN/IEC60335-1 standard for motor control
The test request of device processed, and relative to existing relay mode, this discharge circuit is at low cost, high reliablity, has the electric discharge
The controller of circuit is small in size.
It as specific embodiment, please refers to shown in Fig. 2, the communication switch module 31 includes photo-coupler and diode
The cathode of D1, photo-coupler input terminal U1A are connect with battery pack cathode, and the anode of photo-coupler input terminal U1A connects through resistance R2
Power supply VCC, the emitter of optocoupler output U1B connect the anode of microcontroller 1 and diode D1, photo-coupler output
The collector of end U1B is connect with the cathode of acquisition module 32 and diode D1.
As specific embodiment, please refer to shown in Fig. 2, the acquisition module 32 include resistance R1, zener diode DZ1 and
DZ2, resistance R4, resistance R7 and NMOS tube Q1, one end of the resistance R1 are connect with battery pack anode, the other end and two pole of pressure stabilizing
The cathode and communication switch module 31 of pipe DZ1 connect, the other end of the resistance R1 specifically with light in communication switch module 31
The collector of coupler output U1B connects, cathode, the electricity of the anode and zener diode DZ2 of the zener diode DZ1
Hinder R7 one end and NMOS tube Q1 grid connection, the anode of the zener diode DZ2, the other end of resistance R7 and
The source electrode of NMOS tube Q1 is connect with battery pack cathode, and the drain electrode of the NMOS tube Q1 is through resistance R4 and discharge switch module 33
Connection, the connecting node between the resistance R1 and zener diode DZ1 are equipped with battery pack communication port.It is preferred that in this reality
It applying in example, the resistance R1 is mega-ohms resistance, thus can be after battery pack and acquisition module 32 disconnect, it can acquisition testing
Voltage value at battery pack communication port, while nor affecting on controller stand-by power consumption.
As specific embodiment, please refer to shown in Fig. 2, the discharge switch module 33 include resistance R3, triode Q3 and
Resistance R5, one end of the resistance R3 and the emitter of triode Q3 are connect with battery pack anode, and the resistance R3's is another
End connect with the base stage of triode Q3 and acquisition module 32, the other end of the resistance R3 specifically with resistance in acquisition module 32
One end of R4 connects, and the collector of the triode Q3 is connect through resistance R5 with discharge module 34.
As specific embodiment, please refer to shown in Fig. 2, the discharge module 34 include resistance R8, zener diode DZ3,
NMOS tube Q2 and resistance R6, the grid of one end of the resistance R8, the cathode of zener diode DZ3 and NMOS tube Q2 with
Discharge switch module 33 connects, and specifically connect with one end of resistance R5 in the discharge switch module 33, two pole of pressure stabilizing
The source electrode of the anode of pipe DZ3, the other end of resistance R8 and NMOS tube Q2 is connect with battery pack cathode, the NMOS pipe Q2
Drain electrode connect through resistance R6 with battery pack anode, it is positive that the anode of the energy storage filter capacitor connect battery pack with resistance R6
One end connection, the cathode of the energy storage filter capacitor connect with NMOS tube Q2 battery pack cathode source electrode connect.
It as specific embodiment, please refers to shown in Fig. 3, present invention also provides another discharge circuit line constructions, should
Discharge circuit in figure is compared with the discharge circuit that Fig. 2 is provided, and All other routes structure is all identical in addition to communication switch module 31.
Specifically, communication switch module 31 shown in Fig. 3 includes triode Q4, resistance R9 and PMOS tube Q5, the base of the triode Q4
Pole is connect by resistance R10 connection power supply VCC, the emitter of the triode Q4 with battery pack cathode, the triode Q4's
Collector is connect by resistance R9 with the grid of PMOS tube Q5, and the drain electrode of PMOS tube Q5 connects microcontroller, PMOS tube Q5's
Source electrode is connect with acquisition module 32.
Motor controller provided by the present application with discharging function in order to better understand, below with reference to attached drawing 2
In embodiment the working principle of discharge circuit in motor controller is introduced:
After battery pack is disconnected, the voltage of power supply VCC is 0V in communication switch module 31, thus photo-coupler is not led
Logical, communication switch module 31 disconnects the connection of microcontroller 1 and acquisition module 32, at this time at battery pack communication port due to
Battery pack internal resistance disconnects, so voltage value can increase, zener diode DZ1 conducting, so that NMOS tube Q1, triode
Q3 and NMOS tube Q2 successive conductive, final resistance R6, NMOS tube Q2 and energy storage filter capacitor 2 form a circuit, the energy storage
Filter capacitor 2 is discharged by resistance R6 and NMOS tube Q2.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (6)
1. a kind of motor controller with discharging function, including microcontroller and energy storage filter capacitor, feature exist
In, further include discharge circuit, the discharge circuit include be linked in sequence communication switch module, acquisition module, discharge switch mould
One end of block and discharge module, the communication switch module is connect with microcontroller, the communication switch module and acquisition mould
Connecting node between block is connect with external battery pack, and the output end of the discharge module is connect with energy storage filter capacitor, described
Communication switch module is used to disconnect the connection of microcontroller and acquisition module, and the acquisition module is for collecting external electrical
Chi Bao and motor controller give discharge switch module offer Continuity signal after disconnecting, and the discharge switch module is used for basis and adopts
The Continuity signal that collection module provides makes discharge module discharge, and the discharge module is for putting energy storage filter capacitor
Electricity.
2. the motor controller according to claim 1 with discharging function, which is characterized in that the communication switch mould
Block includes photo-coupler and diode D1, and the cathode of photo-coupler input terminal U1A is connect with battery pack cathode, photo-coupler input
The anode of end U1A meets power supply VCC through resistance R2, and the emitter of optocoupler output U1B connects microcontroller and diode D1
Anode, the collector of optocoupler output U1B connect with the cathode of acquisition module and diode D1.
3. the motor controller according to claim 1 with discharging function, which is characterized in that the communication switch mould
Block includes the base stage of triode Q4, resistance R9 and PMOS tube Q5, the triode Q4 by resistance R10 connection power supply VCC, is emitted
Pole is connect with battery pack cathode, and collector is connect by resistance R9 with the grid of PMOS tube Q5, and the drain electrode of PMOS tube Q5 connects micro-control
Device MCU processed, the source electrode of PMOS tube Q5 are connect with acquisition module.
4. the motor controller according to claim 1 with discharging function, which is characterized in that the acquisition module packet
Include resistance R1, zener diode DZ1 and DZ2, resistance R4, resistance R7 and NMOS tube Q1, one end of the resistance R1 and battery pack
Anode connection, the other end are connect with the cathode of zener diode DZ1 and communication switch module, and the zener diode DZ1 is just
Pole is connect with the grid of the cathode of zener diode DZ2, one end of resistance R7 and NMOS tube Q1, the zener diode DZ2
Anode, the other end of resistance R7 and the source electrode of NMOS tube Q1 connect with battery pack cathode, the drain electrode of the NMOS tube Q1
It is connect through resistance R4 with discharge switch module, the connecting node between the resistance R1 and zener diode DZ1 is equipped with battery
Packet communication port.
5. the motor controller according to claim 1 with discharging function, which is characterized in that the discharge switch mould
Block include resistance R3, triode Q3 and resistance R5, the resistance R3 one end and triode Q3 emitter with battery pack just
Pole connection, the other end of the resistance R3 are connect with the base stage of triode Q3 and acquisition module, the collector of the triode Q3
It is connect through resistance R5 with discharge module.
6. the motor controller according to claim 1 with discharging function, which is characterized in that the discharge module packet
Include one end of resistance R8, zener diode DZ3, NMOS tube Q2 and resistance R6, the resistance R8, the cathode of zener diode DZ3
And the grid of NMOS tube Q2 is connect with discharge switch module, the other end of the anode of the zener diode DZ3, resistance R8
And the source electrode of NMOS tube Q2 is connect with battery pack cathode, the drain electrode of the NMOS tube Q2 connects through resistance R6 and battery pack anode
It connects, the anode of the energy storage filter capacitor connect one end connection of battery pack anode with resistance R6, the energy storage filter capacitor
Cathode connect the source electrode connection of battery pack cathode with NMOS tube Q2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821710407.3U CN208890699U (en) | 2018-10-22 | 2018-10-22 | A kind of motor controller with discharging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821710407.3U CN208890699U (en) | 2018-10-22 | 2018-10-22 | A kind of motor controller with discharging function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208890699U true CN208890699U (en) | 2019-05-21 |
Family
ID=66516669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821710407.3U Active CN208890699U (en) | 2018-10-22 | 2018-10-22 | A kind of motor controller with discharging function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208890699U (en) |
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2018
- 2018-10-22 CN CN201821710407.3U patent/CN208890699U/en active Active
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