CN207910511U - Battery charge control circuit and dust catcher - Google Patents
Battery charge control circuit and dust catcher Download PDFInfo
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- CN207910511U CN207910511U CN201820122147.1U CN201820122147U CN207910511U CN 207910511 U CN207910511 U CN 207910511U CN 201820122147 U CN201820122147 U CN 201820122147U CN 207910511 U CN207910511 U CN 207910511U
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- charging
- charge control
- battery pack
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a kind of battery charge control circuit and dust catcher, which is arranged between battery pack and charging interface, including：MCU sends out trigger signal；Charging detecting circuit exports control signal, to control the charging and disconnection of battery pack according to the access signal of trigger signal and charging interface；Its control terminal receives the trigger signal that the MCU is sent out, and the first test side and the second test side are correspondingly connected with two terminals of charging interface, and output end is connect with battery pack；Excess voltage protection is arranged between MCU and charging detecting circuit, for when two terminals of first test side and second test side and the charging interface are correspondingly connected with, overvoltage protection to be realized to the MCU；Wherein, the input/output interface of the input terminal of excess voltage protection and MCU connect, and the control terminal of output end and charging detecting circuit connects.The utility model improves battery charging reaction speed.
Description
Technical field
The utility model is related to electric circuit electronics technical field more particularly to a kind of battery charge control circuits and dust catcher.
Background technology
It is well known that battery charging detecting circuit is the important component of battery charging and protection circuit.With lithium battery
For dust catcher charging, when battery charging detecting circuit detects that dust catcher does not insert charger, dust catcher enters low-power consumption shape
State, the dust suction when battery charging detecting circuit detects that charger is initially inserted properly and cell voltage is in safe range when charging
Device just charges, to play the purpose for ensureing lithium battery safe charging and the other circuits of protection.
Currently, battery charging detecting circuit is to detect whether charger has been inserted by transistor circuit when in use mostly
On, then by microcontroller go control charging metal-oxide-semiconductor charging, due to being to first pass through transistor circuit to be judged, then execute monolithic
Machine controls so that uses the slow-footed problem of electric appliance generally existing battery charging reaction of this circuit structure.
Utility model content
The main purpose of the utility model is to provide a kind of battery charge control circuit and dust catchers, it is intended to solve battery
The slow-footed problem of charging reaction improves charging reaction speed.
To achieve the goals above, the utility model provides a kind of battery charge control circuit, setting battery pack with fill
Between electrical interface, including：
MCU sends out trigger signal；
Charging detecting circuit exports control signal according to the access signal of the trigger signal and the charging interface,
To control the charging and disconnection of the battery pack；Wherein, what the control terminal of the charging detecting circuit received that the MCU sends out touches
It signals, the first test side and the second test side of the charging detecting circuit are correspondingly connected with two ends of the charging interface
Son, the output end of the charging detecting circuit are connect with the battery pack；
Excess voltage protection is arranged between the MCU and the charging detecting circuit, for when first detection
When end and second test side and two terminals of the charging interface are correspondingly connected with, overvoltage protection is realized to the MCU；
Wherein, the input terminal of the excess voltage protection is connect with the input/output interface of the MCU, the excess voltage protection
Output end connect with the control terminal of the charging detecting circuit.
Optionally, the charging detecting circuit includes transistor, first resistor, the first diode and metal-oxide-semiconductor；The crystal
The base stage of pipe is the control terminal of the charging detecting circuit, emit the extremely described charging detecting circuit first of the transistor
Test side, the collector of the transistor are connect with the source electrode of the metal-oxide-semiconductor, the collector of the transistor also with the MOS
The grid of pipe connects；One end of the first resistor is connect with the base stage of the transistor, the other end of the first resistor with
The emitter of the transistor connects；The plus earth of first diode, cathode and the crystalline substance of first diode
The emitter of body pipe connects；The node of the source electrode of the metal-oxide-semiconductor and the collector of the transistor is the charging detecting circuit
The second test side；The drain electrode of the metal-oxide-semiconductor is the output end of the charging detecting circuit.
Optionally, the charging detecting circuit further includes the first divider resistance and the second divider resistance；First partial pressure
One end of resistance is connect with the collector of the transistor, the grid of the other end and the metal-oxide-semiconductor of first divider resistance
Connection；One end of second divider resistance is connect with the grid of the metal-oxide-semiconductor, the other end of second divider resistance and institute
State the source electrode connection of metal-oxide-semiconductor.
Optionally, the transistor is NPN transistor.
Optionally, the metal-oxide-semiconductor is PMOS tube.
Optionally, the excess voltage protection includes the second diode, and the anode of second diode is the mistake
The input terminal of voltage protection circuit, the cathode of second diode are the output end of the excess voltage protection.
Optionally, the battery charge control circuit further includes second resistance and 3rd resistor；The MCU further includes modulus
Conversion circuit, for being more than the analog-to-digital conversion of the MCU in the cell voltage of battery pack charging and the battery pack both ends
When the setting voltage value of interface, the signal control of the input/output interface is cut off；
One end of the second resistance is connect with the battery pack, and the other end of the second resistance passes through the MCU's
Analog-to-digital conversion interface is connect with analog-digital conversion circuit as described；One end of the 3rd resistor is grounded, the 3rd resistor it is another
End is connected in parallel between the second resistance and the analog-to-digital conversion interface of the MCU.
Optionally, the battery pack is lithium battery group.
In addition, to achieve the above object, the utility model also provides a kind of dust catcher, including body of dust collector, battery pack,
Charging interface and the battery charge control circuit being arranged between the battery pack and the charging interface；
The battery charge control circuit is for controlling the charging process of battery pack, the battery charge control electricity
Road is configured as battery charge control circuit as described above；
The battery pack is used to power for the body of dust collector.
The utility model is by being arranged battery charge control circuit between battery pack and charging interface, including MCU, hair
Go out trigger signal；Charging detecting circuit exports control letter according to the access signal of the trigger signal and the charging interface
Number, to control the charging and disconnection of the battery pack；And excess voltage protection, for the first inspection when charging detecting circuit
When survey end and two terminals of the second test side and charging interface are correspondingly connected with, overvoltage protection is realized to the MCU.To make
Charging detecting circuit can directly control battery pack and realize charging, this save true after the detection for completing charging interface
The charge control link that the signal transduction process and microcontroller recognized after charging interface access execute, accelerates the anti-of battery charging
Answer speed.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the module diagram of one embodiment of the utility model battery charge control circuit；
Fig. 2 is the electrical block diagram of Fig. 1 embodiments.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Drawing reference numeral explanation：
Specific implementation mode
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining relative position relation, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
To indicate or implying its relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution
Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not in the requires of the utility model
Protection domain within.
The utility model provides a kind of battery charge control circuit, referring to Fig.1, in one embodiment, battery charging control
Circuit 10 processed is arranged between battery pack 30 and charging interface (not indicating), including：
Send out the MCU12 (Microcontroller Unit, micro-control unit) of trigger signal；
Charging detecting circuit 11 exports control letter according to the access signal of the trigger signal and the charging interface
Number, to control the charging and disconnection of the battery pack 30；Wherein, described in the control terminal of the charging detecting circuit 11 receives
The trigger signal that MCU12 is sent out, the first test side and the second test side of the charging detecting circuit 11 are correspondingly connected with described fill
Two terminals of electrical interface, the output end of the charging detecting circuit 11 are connect with the battery pack 30；
Excess voltage protection 13 is arranged between the MCU12 and the charging detecting circuit 11, for when described the
When one test side and second test side and two terminals of the charging interface are correspondingly connected with, the MCU12 was realized
Voltage protection；Wherein, the input terminal of the excess voltage protection 13 is connect with the input/output interface of the MCU12, described
The output end of excess voltage protection 13 is connect with the control terminal of the charging detecting circuit 11.
Above-mentioned battery charge control circuit 10 can be arranged to be needed to connect what the progress battery pack 30 of charger 20 charged various
In electric equipment products, wherein two terminals of the charging interface are connect with the positive and negative anodes of charger 20.Optionally, the battery
Group 30 is secondary cell, for example, it may be lithium battery group.
The present embodiment can trigger charging detecting circuit by the trigger signal of the input/output interface I/O outputs of MCU12
11 carry out the detection of the access situation of charging interface, and then charging detecting circuit 11 can be opened according to the detection case of charging interface
Or charge closing is interfaced to the circuit of battery pack 30.It can detect that charging interface correctly accesses city in charging detecting circuit 11
When electric, control charging interface to 30 place circuit of battery pack is connected, and the battery pack 30 is made to charge normal；In charging detecting circuit
11 when detecting that charging interface does not access alternating current or anti-inserted corresponding 20 positive and negative anodes of charger of charging interface, keeps charging interface
It is turned off to 30 place circuit of battery pack, the battery pack 30 is made not charge.
This programme is due to provided with the trigger signal and the charging interface sent out according to the MCU12 received
Access signal output control signal makes charging examine with the charging for controlling the battery pack 30 and the charging detecting circuit 11 disconnected
Slowdown monitoring circuit 11 can directly control battery pack 30 and realize charging, this save and confirming after the detection for completing charging interface
The charge control link that signal transduction process and microcontroller after charging interface access execute, accelerates the reaction of battery charging
Speed.Further, since being also provided with the excess voltage protection 13 for carrying out overvoltage protection to MCU12, can prevent because of voltage
It is excessive that MCU12 is damaged, improve the safety of circuit.
Further, referring to Fig. 2, the structure of above-mentioned charging detecting circuit 11 and excess voltage protection 13 can be according to reality
Border needs to be configured, such as above-mentioned charging detecting circuit 11 may include first resistor R1, the first diode D1, transistor Q1
With metal-oxide-semiconductor Q2；Wherein, the first resistor R1 can be single resistance, can also be to be connected in series by multiple resistance.The crystalline substance
The base stage of body pipe Q1 is the control terminal of the charging detecting circuit 11, the extremely described charging detection electricity of transmitting of the transistor Q1
First test side on road 11, the collector of the transistor Q1 are connect with the source electrode of the metal-oxide-semiconductor Q2, the collection of the transistor Q1
Electrode is also connect with the grid of the metal-oxide-semiconductor Q2；One end of the first resistor R1 is connect with the base stage of the transistor Q1, institute
The other end for stating first resistor R1 is connect with the emitter of the transistor Q1；The plus earth of the first diode D1, institute
The cathode for stating the first diode D1 is connect with the emitter of the transistor Q1；The source electrode of the metal-oxide-semiconductor Q2 and the transistor
The node of the collector of Q1 is the second test side of the charging detecting circuit 11；The drain electrode of the metal-oxide-semiconductor Q2 is the charging
The output end of detection circuit 11.
It should be noted that above-mentioned metal-oxide-semiconductor Q2 and transistor Q1 can by equivalent circuit or individual electronic components into
Row is replaced, herein without repeating.Further, the type of the transistor Q1 and metal-oxide-semiconductor Q2 can also be according to actual needs
It is configured, the transistor Q1 can be NPN transistor, and the metal-oxide-semiconductor Q2 can be PMOS tube.
Further, the charging detecting circuit 11 further includes the first divider resistance R2 and the second divider resistance R3；It is described
One end of first divider resistance R2 is connect with the collector of the transistor Q1, the other end of the first divider resistance R2 and institute
State the grid connection of metal-oxide-semiconductor Q2；One end of the second divider resistance R3 is connect with the grid of the metal-oxide-semiconductor Q2, and described second
The other end of divider resistance R3 is connect with the source electrode of the metal-oxide-semiconductor Q2.First divider resistance R2 connects with the second divider resistance R3
Partial pressure so that the voltage between the grid and source electrode of metal-oxide-semiconductor Q2 will not be excessive, plays the role of protecting metal-oxide-semiconductor Q2.
In addition, above-mentioned excess voltage protection 13 includes the second diode D2, the anode of the second diode D2 is institute
The input terminal of excess voltage protection 13 is stated, the cathode of the second diode D2 is the output of the excess voltage protection 13
End, or can also be other equivalent circuits with overvoltage protection effect.
Based on above-mentioned hardware configuration, the battery charge control circuit 10 carries out charging detection and the process of control can be with
For：Upper pull-up voltage control input/output interface I/O exports high level signal as trigger signal, under normal circumstances built in MCU12
High level signal can pass through the second diode D2 and flow into first resistor R1, then the emitter of inflow transistor Q1.
If corresponding charger 20 is not accessed at the both ends of charging interface at this time, because MCU12 high level signal and
The one-way conduction characteristic of diode so that the first diode D1 can not be connected, and high level signal cannot flow into ground GND, transistor
Q1 can not be connected.
If inserted with corresponding charger 20 but when not accessing alternating current, cell voltage VBAT can be more than charging interface at this time
The positive VCHG+ voltages of the charger 20 of charging interface connection, i.e. the anode voltage of the inside metal-oxide-semiconductor Q2 fly-wheel diode is more than interior
The cathode voltage of portion's fly-wheel diode, the fly-wheel diode conducting of the inside metal-oxide-semiconductor Q2, cell voltage VBAT flow through fly-wheel diode,
So that anode VCHG+ voltages are equal to the pressure drop that cell voltage VBAT subtracts fly-wheel diode inside metal-oxide-semiconductor Q2.Furthermore due to filling
The corresponding 20 positive and negative end parallel resistance of charger of electrical interface so that when charger 20 does not access alternating current, positive VCHG+ voltages
Cathode VCHG- is flowed by resistance in parallel so that the voltage approximately equal of VCHG+ voltages and VCHG-.First diode at this time
D1 is because one-way conduction characteristic is ended, and the voltage of 20 cathode VCHG- of charger can not still flow into ground GND, and transistor Q1 can not be led
It is logical.
If charging interface is inserted with corresponding charger 20 at this time, but charger 20 is anti-inserted so that charging interface
The access of first test side is positive VCHG+ voltages, and the first diode D1 is also switched off, and transistor Q1 can not be connected, at this point, first
Diode D1 can prevent from impacting entire battery charge control circuit because charger 20 is anti-inserted.
Above-mentioned three kinds fail correctly to access charger 20 or all make the first diode D1 cut-offs the case where not accessing alternating current, into
And it causes that between the emitter and base stage of transistor Q1 voltage difference, transistor Q1 cut-offs, the drain electrode of metal-oxide-semiconductor Q2 and source cannot be formed
Pole disconnects, and the circuit between charging interface and battery pack 30 disconnects, and can not be that battery pack 30 charges.
When charging interface connects correct and access alternating current with corresponding charger 20, due to the cathode of charger 20
VCHG- voltages are 0V, and the voltage of the first test side of charging interface is also 0V, and the first diode D1 is not turned on, transistor Q1 hairs
There is a forward conduction voltage difference between emitter-base bandgap grading and base stage so that transistor Q1 conductings.20 anode VCHG+ voltages of charger pass through
Two test sides are flowed into the collector of transistor Q1, then the emitter of inflow transistor Q1, by the first test side to cathode
VCHG- forms complete circuit.Voltage between the grid and source electrode of metal-oxide-semiconductor Q2 can reach the cut-in voltage of metal-oxide-semiconductor Q2,
The drain electrode and source electrode for controlling metal-oxide-semiconductor Q2 are closed conducting, and battery pack 30 charges.Simultaneously because transistor Q1 internal structures, brilliant
The pressure drop of the about pressure drop of 0.3V between body pipe Q1 base stages and emitter, the second diode D2 is about 0.3V, so MCU12
The voltage of middle input/output interface I/O is about 0.6V.Therefore, when MCU12 detects that input/output interface I/O inputs one are low
When level signal, it can detect that charger 20 has been plugged well, and MCU12 is examined in the case that other chargers 20 do not connect
Measure the trigger signal that input/output interface I/O is high level.
In conclusion being based on above-mentioned hardware configuration, the state of transistor Q1, the state of metal-oxide-semiconductor Q2 and/or defeated can be passed through
Enter whether output interface I/O receives low level signal, confirm whether charger 20 charges normal, is filled to reach battery pack 30
The purpose of electro-detection.Furthermore in above-mentioned hardware configuration, using only MCU12 sending out into line triggering signal, and signal is detected
It collects, is judged using thyristor compared to independent, charge control is carried out by microcontroller, manufacturing cost has been saved, has improved
Charge response speed.
Further, second resistance R4 and 3rd resistor R5 can also be set in battery charge control circuit 10.It is described
MCU12 further includes analog to digital conversion circuit (not shown), for the electricity in the charging of the battery pack 30 and 30 both ends of the battery pack
When cell voltage VBAT is more than the setting voltage value of the analog-to-digital conversion interface A/D of the MCU12, the input/output interface I/ is cut off
The signal of O controls.
One end of the second resistance R4 is connect with the battery pack 30, and the other end of the second resistance R4 is described in
The analog-to-digital conversion interface A/D of MCU12 is connect with analog-digital conversion circuit as described；One end of the 3rd resistor R5 is grounded, and described the
The other end of three resistance R5 is connected in parallel between the analog-to-digital conversion interface A/D of the second resistance R4 and MCU12.
It should be noted that the structure of analog to digital conversion circuit, without being defined, those skilled in the art can refer to this
Field common technology is configured, it is only necessary to realize above-mentioned corresponding function.And second resistance R4 and 3rd resistor R5 are most
The other resistance of mega-ohms is selected well, electric current can be made to be less than 1uA, be met the requirement of low-power consumption.Pass through second resistance R4
Cell voltage VBAT when charging is detected with the voltage of 3rd resistor R5, if analog to digital conversion circuit confirms charging electricity when charging
When the voltage at 30 both ends of pond group increases above analog-to-digital conversion interface A/D setting voltage values, MCU12 will control input/output interface
I/O not output signals make metal-oxide-semiconductor Q2 turn off, and control charger 20 stops charging to battery pack 30, to ensure that the peace of charging
Entirely.
The utility model also provides a kind of dust catcher, which includes body of dust collector, supplied for the body of dust collector
Battery pack, charging interface and the battery charge control circuit being arranged between the battery pack and the charging interface of electricity, should
For controlling the charging process of battery pack, the structure of the battery charge control circuit can refer to battery charge control circuit
Above-described embodiment, details are not described herein.Naturally, since the dust catcher of the present embodiment uses above-mentioned battery charge control
The technical solution of circuit, therefore the advantageous effect that the dust catcher has above-mentioned battery charge control circuit all.
It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (9)
1. a kind of battery charge control circuit, which is characterized in that it is arranged between battery pack and charging interface, including：
MCU sends out trigger signal；
Charging detecting circuit exports control signal, with control according to the access signal of the trigger signal and the charging interface
Make the charging and disconnection of the battery pack；Wherein, the control terminal of the charging detecting circuit receives the triggering letter that the MCU is sent out
Number, the first test side and the second test side of the charging detecting circuit are correspondingly connected with two terminals of the charging interface, institute
The output end for stating charging detecting circuit is connect with the battery pack；
Excess voltage protection is arranged between the MCU and the charging detecting circuit, for when first test side and
When second test side and two terminals of the charging interface are correspondingly connected with, overvoltage protection is realized to the MCU；Its
In, the input terminal of the excess voltage protection is connect with the input/output interface of the MCU, the excess voltage protection
Output end is connect with the control terminal of the charging detecting circuit.
2. battery charge control circuit as described in claim 1, which is characterized in that the charging detecting circuit includes crystal
Pipe, first resistor, the first diode and metal-oxide-semiconductor；The base stage of the transistor is the control terminal of the charging detecting circuit, described
First test side of the extremely described charging detecting circuit of transmitting of transistor, the collector of the transistor and the metal-oxide-semiconductor
Source electrode connects, and the collector of the transistor is also connect with the grid of the metal-oxide-semiconductor；One end of the first resistor and the crystalline substance
The base stage of body pipe connects, and the other end of the first resistor is connect with the emitter of the transistor；First diode
The cathode of plus earth, first diode is connect with the emitter of the transistor；The source electrode of the metal-oxide-semiconductor and the crystalline substance
The node of the collector of body pipe is the second test side of the charging detecting circuit；The drain electrode of the metal-oxide-semiconductor is examined for the charging
The output end of slowdown monitoring circuit.
3. battery charge control circuit as claimed in claim 2, which is characterized in that the charging detecting circuit further includes first
Divider resistance and the second divider resistance；One end of first divider resistance is connect with the collector of the transistor, and described
The other end of one divider resistance is connect with the grid of the metal-oxide-semiconductor；The grid of one end and the metal-oxide-semiconductor of second divider resistance
Pole connects, and the other end of second divider resistance is connect with the source electrode of the metal-oxide-semiconductor.
4. battery charge control circuit as claimed in claim 2, which is characterized in that the transistor is NPN transistor.
5. battery charge control circuit as claimed in claim 2, which is characterized in that the metal-oxide-semiconductor is PMOS tube.
6. battery charge control circuit as described in claim 1, which is characterized in that the excess voltage protection includes second
Diode, the anode of second diode are the input terminal of the excess voltage protection, the cathode of second diode
For the output end of the excess voltage protection.
7. battery charge control circuit as described in claim 1, which is characterized in that the battery charge control circuit further includes
Second resistance and 3rd resistor；The MCU further includes analog to digital conversion circuit, in battery pack charging and the battery pack
When the cell voltage at both ends is more than the setting voltage value of the analog-to-digital conversion interface of the MCU, the input/output interface is cut off
Signal controls；
One end of the second resistance is connect with the battery pack, the modulus that the other end of the second resistance passes through the MCU
Translation interface is connect with analog-digital conversion circuit as described；One end of the 3rd resistor is grounded, and the other end of the 3rd resistor is simultaneously
It is associated between the second resistance and the analog-to-digital conversion interface of the MCU.
8. battery charge control circuit as described in claim 1, which is characterized in that the battery pack is lithium battery group.
9. a kind of dust catcher, which is characterized in that including body of dust collector, battery pack, charging interface and be arranged in the battery pack
Battery charge control circuit between the charging interface；
The battery charge control circuit is for controlling the charging process of battery pack, the battery charge control circuit quilt
It is configured to the battery charge control circuit as described in any one of claim 1-8；
The battery pack is used to power for the body of dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820122147.1U CN207910511U (en) | 2018-01-24 | 2018-01-24 | Battery charge control circuit and dust catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820122147.1U CN207910511U (en) | 2018-01-24 | 2018-01-24 | Battery charge control circuit and dust catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207910511U true CN207910511U (en) | 2018-09-25 |
Family
ID=63564768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820122147.1U Active CN207910511U (en) | 2018-01-24 | 2018-01-24 | Battery charge control circuit and dust catcher |
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| CN (1) | CN207910511U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD929335S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929338S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929334S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929336S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929339S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929337S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD953268S1 (en) | 2019-09-05 | 2022-05-31 | Techtronic Cordless Gp | Electrical interface |
| USD1012855S1 (en) | 2019-09-05 | 2024-01-30 | Techtronic Cordless Gp | Battery pack |
-
2018
- 2018-01-24 CN CN201820122147.1U patent/CN207910511U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD929335S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929338S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929334S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929336S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929339S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929337S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD953268S1 (en) | 2019-09-05 | 2022-05-31 | Techtronic Cordless Gp | Electrical interface |
| USD1012855S1 (en) | 2019-09-05 | 2024-01-30 | Techtronic Cordless Gp | Battery pack |
| USD1013634S1 (en) | 2019-09-05 | 2024-02-06 | Techtronic Cordless Gp | Battery pack |
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