CN207603242U - Electric hand drill battery protection charging unit and hand electric drill device - Google Patents
Electric hand drill battery protection charging unit and hand electric drill device Download PDFInfo
- Publication number
- CN207603242U CN207603242U CN201721393180.XU CN201721393180U CN207603242U CN 207603242 U CN207603242 U CN 207603242U CN 201721393180 U CN201721393180 U CN 201721393180U CN 207603242 U CN207603242 U CN 207603242U
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- Prior art keywords
- unit
- electric hand
- hand drill
- electrically connected
- charging
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 66
- 239000004065 semiconductor Substances 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of electric hand drill battery protection charging unit and hand electric drill devices; it includes power circuit unit, Auxiliary Power Units, charging switching element and charging instruction unit; power circuit unit is electrically connected with Auxiliary Power Units; Auxiliary Power Units, charging switching element and charging instruction unit are electrically connected successively; Auxiliary Power Units are provided with primary source unit, secondary power unit and transformer unit, and power circuit unit is electrically connected with primary source unit；Charging switching element is electrically connected between secondary power unit and electric hand drill lithium cells.The utility model is by setting switch protection unit to carry out overcharging protection to electric hand drill lithium cells; the first chip unit is coordinated to send out low level or high level to the first metal-oxide-semiconductor; and then control break-make of the Auxiliary Power Units to the charge circuit of electric hand drill lithium cells; it can be removed the circuit protection plate in lithium battery electric hand drill, the inner space of effectively save electric hand drill and the assembling of electric hand drill allowed more to simplify.
Description
Technical field
The utility model is related to consumer electronics field, more particularly, to a kind of electric hand drill battery protection charging unit and
Hand electric drill device.
Background technology
All there is battery protecting plate at present, it is ensured that the lithium battery inside electric hand drill will not be overcharged, lithium inside electric hand drill
Battery overcharge can cause to explode, so having one block of circuit protection plate, but be installed on this circuit inside most electric hand drill
The electric hand drill size or assembling procedure of protection board compare that there are problems.
Specifically, the opposite meeting mostly several electrical connecting wires of the electric hand drills of more one block of circuit protection plate, then in group
Loading onto seems complicated, meanwhile, the volume of the electric hand drills of more one block of circuit protection plate on the whole can increase.
Utility model content
Based on this, it is necessary to for above-mentioned background technology there are the problem of, a kind of electric hand drill battery protection charging dress is provided
It puts, can be removed the circuit protection plate in lithium battery electric hand drill, effectively save space and the assembling of electric hand drill is allowed more to simplify, simultaneously
Setting had the charging circuit of charging protection function in charging to lithium battery, either interchangeable battery or was fixed on hand
Lithium battery in electric drill all has compatibility.
To achieve the above object, the utility model discloses a kind of electric hand drill battery protection charging unit, including power supply
Circuit unit, Auxiliary Power Units, charging switching element and charging instruction unit, the power circuit unit and accessory power supply list
Member is electrically connected, the external alternating current of power circuit unit, the Auxiliary Power Units, charging switching element and charging instruction list
Member is electrically connected successively, and the Auxiliary Power Units are provided with primary source unit, secondary power unit and transformer unit, institute
It states power circuit unit to be electrically connected with primary source unit, the transformer unit includes transformer, and the transformer is electrical
It is connected between the primary source unit and secondary power unit；The charging switching element is electrically connected at secondary power list
Between member and electric hand drill lithium cells.
The charging switching element includes first switch unit, the first switch unit in one of the embodiments,
Including the first chip unit, first resistor, second resistance and the first metal-oxide-semiconductor, the positive terminal of the secondary power unit electrically connects
The source electrode of the first metal-oxide-semiconductor is connect, the drain electrode of first metal-oxide-semiconductor is electrically connected the positive terminal of electric hand drill lithium cells, the hand
The negative pole end ground connection of electric drill lithium cells；The grid of first metal-oxide-semiconductor is opened by first resistor and the first chip unit
Guan Duan is electrically connected, and the sense terminal of first chip unit passes through the positive terminal of second resistance and electric hand drill lithium cells electricity
Property connection, for detecting the cell voltage of electric hand drill lithium cells；The ground terminal ground connection of first chip unit.
Described charging instruction unit one end and the drain electrode of the first metal-oxide-semiconductor are electrically connected in one of the embodiments, described
The charging instruction unit other end is grounded.
The charging instruction unit includes 3rd resistor and light emitting diode, the third in one of the embodiments,
Resistance one end is electrically connected the drain electrode of the first metal-oxide-semiconductor, and the 3rd resistor other end is electrically connected the anode of light emitting diode, institute
State the minus earth of light emitting diode.
The charging switching element further includes second switch unit, the first switch list in one of the embodiments,
Member with second switch unit be electrically connected, the second switch unit include the second chip unit, the 4th resistance, the 5th resistance and
Second metal-oxide-semiconductor, the drain electrode of first metal-oxide-semiconductor are electrically connected the source electrode of the second metal-oxide-semiconductor, and the drain electrode of second metal-oxide-semiconductor is electrical
Connect the positive terminal of electric hand drill lithium cells, the negative pole end ground connection of the electric hand drill lithium cells；Second metal-oxide-semiconductor
Grid is electrically connected by the switch terminals of the 4th resistance and the second chip unit, and the sense terminal of second chip unit passes through the
Five resistance and the positive terminal of electric hand drill lithium cells are electrically connected, for detecting the cell voltage of electric hand drill lithium cells；
The ground terminal ground connection of second chip unit.
Described charging instruction unit one end and the drain electrode of the second metal-oxide-semiconductor are electrically connected in one of the embodiments, described
The charging instruction unit other end is grounded.
Protection is additionally provided between the charging switching element and electric hand drill lithium cells in one of the embodiments,
Diode.
A kind of hand electric drill device, including electric hand drill lithium cells and electric hand drill ontology, the electric hand drill lithium battery list
Member is for providing power supply needed for electric hand drill this body running.
In conclusion the utility model electric hand drill battery protection charging unit and hand electric drill device are by setting switch protection
Unit carries out electric hand drill lithium cells to overcharge protection, and the first chip unit of cooperation sends out low level or high level to first
Metal-oxide-semiconductor, and then break-make of the Auxiliary Power Units to the charge circuit of electric hand drill lithium cells is controlled, lithium battery flashlight can be removed
Circuit protection plate in brill, the inner space of effectively save electric hand drill and allows the assembling of electric hand drill more to simplify.
Description of the drawings
Fig. 1 is the schematic block circuit diagram of the utility model electric hand drill battery protection charging unit；
Fig. 2 is a kind of circuit diagram of embodiment of the utility model electric hand drill battery protection charging unit；
Fig. 3 is the circuit diagram inside the utility model hand electric drill device；
Fig. 4 is the circuit diagram of the utility model electric hand drill battery protection charging unit another kind embodiment.
Specific embodiment
As shown in Figures 1 to 4, the utility model electric hand drill battery protection charging unit includes power circuit unit 100, auxiliary
Help power supply unit 200, charging switching element 300 and charging instruction unit 400, the power circuit unit 100 and accessory power supply
Unit 200 is electrically connected, the 100 external alternating current of power circuit unit, and the power circuit unit 100 is electric for providing auxiliary
Source unit 200 works required voltage, the Auxiliary Power Units 200, charging switching element 300 and charging instruction unit 400 according to
Secondary electric connection, the Auxiliary Power Units 200 are traditional constant-current and constant-voltage control circuit, and the Auxiliary Power Units 200 are set
It is equipped with primary source unit 210, secondary power unit 230 and transformer unit 220, the power circuit unit 100 and primary
Power supply unit 210 is electrically connected, and the electric hand drill lithium cells 500 that the secondary power unit 230 provide charge required voltage, institute
It states transformer unit 220 and includes transformer T1A, the transformer T1A is electrically connected at the primary source unit 210 and secondary
Between power supply unit 230；The charging switching element 300 is electrically connected at secondary power unit 230 and electric hand drill lithium battery list
Between member 500, for controlling the break-make of secondary power unit 230 and electric hand drill lithium cells 500, so as to electric hand drill lithium electricity
Pool unit 500 carries out overcharging protection.
The charging switching element 300 includes first switch unit 310 in one of the embodiments, and described first opens
It closes unit 310 and includes the first chip unit U21, first resistor R22, second resistance R24 and the first metal-oxide-semiconductor Q21, the secondary electrical
The positive terminal of source unit 230 is electrically connected the source electrode of the first metal-oxide-semiconductor Q21, and the drain electrode of the first metal-oxide-semiconductor Q21 is electrically connected hand
The positive terminal of electric drill lithium cells 500, the negative pole end ground connection of the electric hand drill lithium cells 500；First metal-oxide-semiconductor
The grid of Q21 is electrically connected by the switch terminals of first resistor R22 and the first chip unit U21, the first chip unit U21
Sense terminal be electrically connected by the positive terminal of second resistance R24 and electric hand drill lithium cells 500, for detecting electric hand drill lithium
The cell voltage of battery unit 500；The ground terminal ground connection of the first chip unit U21.
Described 400 one end of charging instruction unit and the drain electrode of the first metal-oxide-semiconductor Q21 are electrically connected, the charging instruction unit
400 other ends are grounded；Specifically, the charging instruction unit 400 includes 3rd resistor R41 and light emitting diode D31, and described the
Three resistance R41 one end are electrically connected the drain electrode of the first metal-oxide-semiconductor Q21, and the 3rd resistor R41 other ends are electrically connected light-emitting diodes
The anode of pipe D31, the minus earth of the light emitting diode D31.
During the utility model specific works, the first chip unit U21 to the cell voltages of electric hand drill lithium cells 500 into
Row detecting, when the cell voltage of electric hand drill lithium cells 500 is less than the predeterminated voltage of the first chip unit U21, the first core
The control terminal of blade unit U21 sends out low level signal, and the first metal-oxide-semiconductor Q21 conductings, secondary power unit 230 can be to electric hand drill
Lithium cells 500 charge, while light emitting diode D31 can be shinny；When the cell voltage of electric hand drill lithium cells 500
During predeterminated voltage more than the first chip unit U21, electric hand drill lithium cells 500 charge saturation, the first chip unit U21's
Control terminal sends out high level signal, the first metal-oxide-semiconductor Q21 shutdowns, and secondary power unit 230 stops to electric hand drill lithium cells
500 charge, while light emitting diode D31 does not work, and protection is overcharged so as to fulfill to electric hand drill lithium cells 500.
It is also set up between the charging switching element 300 and electric hand drill lithium cells 500 in one of the embodiments,
There is protection diode D21, for carrying out earth leakage protective to charging circuit.
The charging switching element 300 further includes second switch unit 320 in one of the embodiments, and described first
Switch unit 310 is electrically connected with second switch unit 320, the second switch unit 320 include the second chip unit U31,
4th resistance R32, the 5th resistance R34 and the second metal-oxide-semiconductor Q31, the drain electrode of the first metal-oxide-semiconductor Q21 are electrically connected the second metal-oxide-semiconductor
The source electrode of Q31, the drain electrode of the second metal-oxide-semiconductor Q31 are electrically connected the positive terminal of electric hand drill lithium cells 500, the flashlight
Bore the negative pole end ground connection of lithium cells 500；The grid of the second metal-oxide-semiconductor Q31 passes through the 4th resistance R32 and the second chip list
The switch terminals of first U31 are electrically connected, and the sense terminal of the second chip unit U31 passes through the 5th resistance R34 and electric hand drill lithium electricity
The positive terminal of pool unit 500 is electrically connected, for detecting the cell voltage of electric hand drill lithium cells 500；Second chip
The ground terminal ground connection of unit U31, described 400 one end of charging instruction unit and the drain electrode of the second metal-oxide-semiconductor Q31 are electrically connected, described
400 other end of charging instruction unit is grounded.
Similarly, the control terminal output low level of the second chip unit U31, the second metal-oxide-semiconductor Q31 conductings, secondary power unit
230 can charge to electric hand drill lithium cells 500, while light emitting diode D31 can be shinny；Second chip unit U31
Control terminal output high level, the second metal-oxide-semiconductor Q31 shutdowns, secondary power unit 230 stops to electric hand drill lithium cells 500
It charges, while light emitting diode D31 does not work, and then realizes the double protection to electric hand drill lithium cells 500, when first
Chip unit U21 circuits lose overcharge protective capability after, the second chip unit U31 then plays secondary protection function, simple in structure,
It charges to electric hand drill lithium cells 500 and carries out effective protection, improve 500 service life of electric hand drill lithium cells.
According to above-mentioned electric hand drill battery protection charging unit, the utility model provides a kind of hand electric drill device, this practicality is new
Type hand electric drill device includes electric hand drill lithium cells 500 and electric hand drill ontology 600, and the electric hand drill lithium cells 500 are used
It works required power supply in providing electric hand drill ontology 600, the utility model hand electric drill device removes circuit protection plate, effectively save
The inner space of electric hand drill and the assembling of electric hand drill is allowed more to simplify.
In conclusion the utility model electric hand drill battery protection charging unit and hand electric drill device are by setting switch protection
Unit to electric hand drill lithium cells 500 overcharge protection, the first chip unit U21 of cooperation send out low level or high level to
First metal-oxide-semiconductor Q21, and then Auxiliary Power Units 200 are controlled to the break-make of the charge circuit of electric hand drill lithium cells 500, it can
The circuit protection plate in lithium battery electric hand drill is removed, the inner space of effectively save electric hand drill and makes the assembling of electric hand drill simpler
Change.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But it should not be interpreted as limiting the scope of the present invention.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. a kind of electric hand drill battery protection charging unit, it is characterised in that：Including power circuit unit, Auxiliary Power Units, fill
Electric switch unit and charging instruction unit, the power circuit unit are electrically connected with Auxiliary Power Units, the power circuit
The external alternating current of unit, the Auxiliary Power Units, charging switching element and charging instruction unit are electrically connected successively, the auxiliary
Power supply unit is provided with primary source unit, secondary power unit and transformer unit, the power circuit unit and primary electrical
Source unit is electrically connected, and the transformer unit includes transformer, and the transformer is electrically connected at the primary source unit
Between secondary power unit；The charging switching element be electrically connected at secondary power unit and electric hand drill lithium cells it
Between.
2. electric hand drill battery protection charging unit according to claim 1, it is characterised in that：The charging switching element packet
First switch unit is included, the first switch unit includes the first chip unit, first resistor, second resistance and the first metal-oxide-semiconductor,
The positive terminal of the secondary power unit is electrically connected the source electrode of the first metal-oxide-semiconductor, and the drain electrode of first metal-oxide-semiconductor is electrically connected hand
The positive terminal of electric drill lithium cells, the negative pole end ground connection of the electric hand drill lithium cells；The grid of first metal-oxide-semiconductor leads to
It crosses first resistor and the switch terminals of the first chip unit is electrically connected, the sense terminal of first chip unit passes through second resistance
It is electrically connected with the positive terminal of electric hand drill lithium cells, for detecting the cell voltage of electric hand drill lithium cells；Described
The ground terminal ground connection of one chip unit.
3. electric hand drill battery protection charging unit according to claim 2, it is characterised in that：The charging instruction unit one
End and the drain electrode of the first metal-oxide-semiconductor are electrically connected, the charging instruction unit other end ground connection.
4. electric hand drill battery protection charging unit according to claim 3, it is characterised in that：The charging instruction unit packet
3rd resistor and light emitting diode are included, described 3rd resistor one end is electrically connected the drain electrode of the first metal-oxide-semiconductor, and the 3rd resistor is another
One end is electrically connected the anode of light emitting diode, the minus earth of the light emitting diode.
5. electric hand drill battery protection charging unit according to claim 2, it is characterised in that：The charging switching element is also
Including second switch unit, the first switch unit is electrically connected with second switch unit, and the second switch unit includes
Second chip unit, the 4th resistance, the 5th resistance and the second metal-oxide-semiconductor, the drain electrode of first metal-oxide-semiconductor are electrically connected the 2nd MOS
The source electrode of pipe, the drain electrode of second metal-oxide-semiconductor are electrically connected the positive terminal of electric hand drill lithium cells, the electric hand drill lithium battery
The negative pole end ground connection of unit；The grid of second metal-oxide-semiconductor is electrically connected by the switch terminals of the 4th resistance and the second chip unit
It connects, the sense terminal of second chip unit is electrically connected by the 5th resistance and the positive terminal of electric hand drill lithium cells, is used
In the cell voltage of detection electric hand drill lithium cells；The ground terminal ground connection of second chip unit.
6. electric hand drill battery protection charging unit according to claim 5, it is characterised in that：The charging instruction unit one
End and the drain electrode of the second metal-oxide-semiconductor are electrically connected, the charging instruction unit other end ground connection.
7. electric hand drill battery protection charging unit according to claim 1 or 2, it is characterised in that：The charge switch list
Protection diode is additionally provided between member and electric hand drill lithium cells.
8. a kind of hand electric drill device, it is characterised in that：Including electric hand drill lithium cells and electric hand drill ontology, the electric hand drill lithium
Battery unit is for providing power supply needed for electric hand drill this body running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721393180.XU CN207603242U (en) | 2017-10-26 | 2017-10-26 | Electric hand drill battery protection charging unit and hand electric drill device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721393180.XU CN207603242U (en) | 2017-10-26 | 2017-10-26 | Electric hand drill battery protection charging unit and hand electric drill device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207603242U true CN207603242U (en) | 2018-07-10 |
Family
ID=62756419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721393180.XU Expired - Fee Related CN207603242U (en) | 2017-10-26 | 2017-10-26 | Electric hand drill battery protection charging unit and hand electric drill device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207603242U (en) |
-
2017
- 2017-10-26 CN CN201721393180.XU patent/CN207603242U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 |