CN207967989U - A kind of charging circuit and charger for lithium battery - Google Patents
A kind of charging circuit and charger for lithium battery Download PDFInfo
- Publication number
- CN207967989U CN207967989U CN201820226670.9U CN201820226670U CN207967989U CN 207967989 U CN207967989 U CN 207967989U CN 201820226670 U CN201820226670 U CN 201820226670U CN 207967989 U CN207967989 U CN 207967989U
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 49
- 230000005611 electricity Effects 0.000 claims description 17
- 230000009466 transformation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of charging circuits and charger for lithium battery.Charging circuit includes adapter, ETA9640 chips, current control unit, USB output units and charhing unit, wherein for the adapter for providing direct current, the output end of the adapter is electrically connected the pin IN of the ETA9640 chips；For the current control unit for controlling charging current, the output end of the current control unit is electrically connected the pin ISET of the ETA9640 chips；The USB output units are electrically connected the pin USB OUT of the ETA9640 chips for exporting control signal, the USB output units；The charhing unit is used to charge for lithium battery, and the charging circuit configuration is simple, at low cost, and energy transformation ratio is high, increases the capacity of lithium battery.
Description
Technical field
The utility model is related to electronic technology fields, and in particular to a kind of charging circuit and charger for lithium battery.
Background technology
Lithium battery provides electric energy for electronic equipment, and universal with electronic product is widely used, especially in recent years
Come, the use scope for further expanding lithium battery is widely used in hand held electronic terminals.The charging rate of lithium battery and charging
Process influences the user experience of hand held electronic terminals.Therefore, to the charging process of lithium battery, more stringent requirements are proposed, how smart
Really control lithium battery charging process becomes the emphasis studied at present.
Current lithium battery charging circuit needs multiple chips to be used cooperatively, and peripheral circuit is complicated, bill of materials (BOM) at
This height；And it is complicated, it needs to protect the active devices such as circuit and field-effect tube, increases design and cost of manufacture.In addition,
It protects circuit not perfect, short circuit thermal is easy, it is difficult to self- recoverage.
Utility model content
It is existing to solve the purpose of this utility model is to provide a kind of charging circuit and charger for lithium battery
Problem of high cost, complicated.
To achieve the above object, the technical solution of the utility model is to provide a kind of charging circuit for lithium battery, institute
It includes adapter, ETA9640 chips, current control unit, USB output units and charhing unit to state charging circuit, wherein
For the adapter for providing direct current, the output end of the adapter is electrically connected drawing for the ETA9640 chips
Foot IN；
The current control unit is for controlling charging current, described in the output end electrical connection of the current control unit
The pin ISET of ETA9640 chips；
The USB output units are electrically connected the ETA9640 chips for exporting control signal, the USB output units
Pin USB-OUT；
The charhing unit is used to charge for lithium battery, and the charhing unit includes the 5th capacitance, the 6th capacitance, the 7th electricity
Resistance, third diode and inductance, wherein the first end of the 5th capacitance is electrically connected the pin BATT of the ETA9640 chips,
Electric energy output ends of the pin BATT of the ETA9640 chips as charging circuit；The second end of 5th capacitance is grounded；
The first end of 6th capacitance is electrically connected the pin SW of the ETA9640 chips, and the second of the 6th capacitance
End is electrically connected the cathode of the first end and the third diode of the 7th resistance；
The anode of the third diode and the second end of the 7th resistance are grounded；
The first end of the inductance is electrically connected the pin BATT of the ETA9640 chips, and the second end of the inductance is electrically connected
Meet the pin SW of the ETA9640 chips.
Wherein, the adapter includes first resistor, the first capacitance and the first diode, wherein
The first end electrical connection signal input part V of the first resistorIN, the first resistor second end electrical connection described in
The pin IN of ETA9640 chips；
The first end of first capacitance is electrically connected the pin IN of the ETA9640 chips, and the first of first capacitance
End ground connection；
The anode electrical connection signal input part V of first diodeIN, first diode cathode electrical connection described in
The pin IN of ETA9640 chips.
Wherein, the current control unit includes second resistance, described in the first end electrical connection of the second resistance
The pin ISET of ETA9640 chips, the second end ground connection of the second resistance.
Wherein, the USB output units include third capacitance, the 4th capacitance, the 5th capacitance, wherein the third capacitance
First end be electrically connected the pin USB-OUT of the ETA9640 chips, the second end ground connection of the third capacitance；
The first end of 4th capacitance is electrically connected the pin USB-OUT of the ETA9640 chips, the 4th capacitance
Second end is grounded；
The first end of 5th capacitance is electrically connected the pin USB-OUT of the ETA9640 chips, the 5th capacitance
Second end is grounded；
Moreover, signal output end Vs of the pin USB-OUT of the ETA9640 chips as charging circuitout。
Preferably, the charging circuit further includes enabled control unit, is used to activate the charging circuit with for lithium electricity
It charges in pond；
The enabled control unit includes 3rd resistor, the 4th resistance, the 5th resistance and the first triode；Wherein, described
Electric energy output end of the first end of 3rd resistor as the charging circuit, the 3rd resistor second end electrical connection described in
The pin EN of ETA9640 chips；
The first end electrical connection signal input part V of 4th resistancein, the 4th resistance second end electrical connection described in
The base stage of first triode；
The first end of 5th resistance is electrically connected the base stage of first triode, the second termination of the 5th resistance
Ground；
The collector of first triode is electrically connected the pin EN of the ETA9640 chips, first triode
Emitter is grounded.
Preferably, the charging circuit further includes battery capacity indication unit, is used to show the electricity of lithium battery；
The battery capacity indication unit includes the 6th resistance and the second diode；Wherein, the first end electricity of the 6th resistance
The anode of second diode is connected, the second end of the 6th resistance is electrically connected the pin STAT of the ETA9640 chips；
The cathode of second diode is grounded.
Preferably, the charging circuit further includes adapter indicating unit, and the adapter indicating unit includes the 8th electricity
Resistance and the 4th diode, the first end electrical connection signal input part V of the 8th resistanceIN, the second end electricity of the 8th resistance
Connect the anode of the 4th diode, the cathode ground connection of the 4th diode.
In addition, the utility model also provides a kind of charger, the charger includes charging circuit, and the charging circuit is adopted
The charging circuit for lithium battery is provided with the utility model.
The utility model has the following advantages that：
Charging can be realized using single ETA9640 chips in charging circuit provided by the utility model for lithium battery,
Peripheral circuit is simplified, and charging circuit does not need active device, reduce the cost of bill of materials (BOM), made simultaneously
Energy conversion rate reaches 96% or more, equivalent to increase battery capacity, greatly reduces totle drilling cost；In addition, charhing unit
Using the up to output current of 1A can be provided under the input voltage of 5V；Moreover, inductance reduces the defeated of USB output units
Go out ripple.
Description of the drawings
Fig. 1 is the topological diagram for the charging circuit for lithium battery that the utility model embodiment provides；
Fig. 2 is the circuit diagram for the charging circuit for lithium battery that the utility model embodiment provides；
Fig. 3 is the circuit of adapter indicating unit in the charging circuit for lithium battery that utility model embodiment provides
Figure.
Drawing reference numeral：
1- adapters 1, U1-ETA9640 chips, 2- current control units, 3-USB output units, 4- charhing units, 5- are suitable
Orchestration indicating unit, 6- enable control unit, 7- battery capacity indication units.
Specific implementation mode
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
Embodiment 1
The present embodiment provides a kind of charging circuits for lithium battery.As shown in Figure 1, the charging circuit packet for lithium battery
Include adapter 1, ETA9640 chips U1, current control unit 2, USB output units 3 and charhing unit 4.Wherein, adapter 1 with
City is electrically connected, for providing direct current, the pin IN of the output end electrical connection ETA9640 chips U1 of adapter for charging circuit.
Current control unit 2 is used to control the size of charging current, the output end electrical connection ETA9640 chips U1 of current control unit 2
Pin ISET.USB output units 3 are electrically connected the pin of ETA9640 chips U1 for exporting control signal, USB output units 3
USB-OUT.Charhing unit 4 exports electric energy, for charging for lithium battery.
Specifically, as shown in Fig. 2, adapter 1 includes first resistor R1, the first capacitance C1 and the first diode D1；Wherein,
The first end electrical connection signal input part V of first resistor R1IN, the second end electrical connection ETA9640 chips of first resistor R1 draw
Foot IN.The first end ground connection of the pin IN, the first capacitance C1 of the first end electrical connection ETA9640 chips of first capacitance C1.First
The signal input part V of the anode electrical connection charging circuit of diode D1IN, the cathode electrical connection ETA9640 cores of the first diode D1
The pin IN of piece.
In the present embodiment, which is AC adapter.First capacitance C1 is used but is not limited to 10 Μ f/10V, the
One diode D1 is used but is not limited to the diode of model NC/160M40.The charging circuit can be collected up to from adapter 1
The electric current of 1A.
Current control unit 2 includes second resistance R2, the pin of the first end electrical connection ETA9640 chips of second resistance R2
The second end of ISET, second resistance R2 are grounded.The resistance value of second resistance R2 may be used but be not limited to 2.2K.ETA9640 chips
Pin ISET be charging current controlling switch, charging current I=1000/R2.
USB output units 3 include third capacitance C3, the 4th capacitance C4 and the 5th capacitance C5, wherein the of third capacitance C3
One end is electrically connected the pin USB-OUT of ETA9640 chips, the second end ground connection of third capacitance C3.The first end of 4th capacitance C4
It is electrically connected the second end ground connection of the pin USB-OUT, the 4th capacitance C4 of ETA9640 chips.The first end of 5th capacitance C5 is electrically connected
Connect the second end ground connection of the pin USB-OUT, the 5th capacitance C5 of ETA9640 chips.Moreover, the pin USB- of ETA9640 chips
Signal output end Vs of the OUT as charging circuitout.The parameter of third capacitance C3, the 4th capacitance C4 and the 5th capacitance C5 are adopted respectively
With but be not limited to 10 μ F/10V, 1 μ F and 10 μ F/10V.Signals of the pin USB-OUT of ETA9640 chips as charging circuit
Output end VOUT, by third capacitance C3, the 4th capacitance C4 and the 5th capacitance C5 filtering.
Charhing unit 4 includes the 5th capacitance C5, the 6th capacitance C6, the 7th resistance R7, third diode D3 and inductance L,
In, the pin BATT of the first end electrical connection ETA9640 chips of the 5th capacitance C5, the pin BATT of ETA9640 chips, which is used as, to be filled
The electric energy output end of circuit；The second end of 5th capacitance C5 is grounded.The first end of 6th capacitance C6 is electrically connected ETA9640 chips
Pin SW, the 6th capacitance C6 second end be electrically connected the 7th resistance R7 first end and third diode D3 cathode.Third
The anode of diode C3 and the second end of the 7th resistance R7 are grounded.The pin of the first end electrical connection ETA9640 chips of inductance L
The pin SW of the second end electrical connection ETA9640 chips of BATT, inductance L.
In the present embodiment, the 5th capacitance C5, the 6th capacitance C6, the 7th resistance R7, third diode D3 and inductance L difference
Using but be not limited to 4.7 μ F, 10nF, 1k, L-C192KRCT, 2.2 μ H.Inductance L as low as 2.2 μ H, inductance L miniaturizations, output wave
Line is small.
As a preferred embodiment of the present embodiment, the charging circuit for lithium battery further includes adapter indicating unit
5, for judging whether adapter 1 is inserted into.As shown in figure 3, adapter indicating unit 5 includes the 8th resistance R8 and the 4th diode
The first end electrical connection signal input part V of D4, the 8th resistance R8IN, the 4th diode D4 of second end electrical connection of the 8th resistance R8
Anode, the 4th diode D4 cathode ground connection.Wherein, the 8th resistance R8 is 1K, and the 4th diode D4 is used but is not limited to type
Number be L-C192KRCT light emitting diode.
In addition, pin PGND, AGND ground connection of ETA9640 chips.In the signal input part V of charging circuitINIt is defeated with signal
Outlet VOUTIt is additionally provided with the 5th diode D5, the anode electrical connection V of the 5th diode D5IN, the cathode electrical connection of the 5th diode
Signal output end VOUT, the diode of model 160M40 may be used in the 5th diode D5.
Embodiment 2
In the present embodiment, include adapter 1, ETA9640 chips U1, current control list for the charging circuit of lithium battery
Member 2, USB output units 3, charhing unit 4 and battery capacity indication unit 7.Wherein, adapter 1 is electrically connected with city, for electric to charge
Road provides direct current, the pin IN of the output end electrical connection ETA9640 chips U1 of adapter.Current control unit 2 is for controlling
The size of charging current, the pin ISET of the output end electrical connection ETA9640 chips U1 of current control unit 2.USB output units
3 for exporting control signal, and USB output units 3 are electrically connected the pin USB-OUT of ETA9640 chips U1.Charhing unit 4 exports
Electric energy, for charging for lithium battery.Battery capacity indication unit 7 is used to show the electricity of lithium battery.
The structure and reality of adapter 1, ETA9640 chips U1, current control unit 2, USB output units 3 and charhing unit 4
Apply that example 1 is identical, and details are not described herein.
Battery capacity indication unit 7 includes the 6th resistance R6 and the second diode D2；Wherein, the first end of the 6th resistance R6 is electrically connected
The anode of sending and receiving optical diode D2, the pin STAT of the second end electrical connection ETA9640 chips of the 6th resistance R6；Second diode
The cathode of D2 is grounded.The resistance value of 6th resistance R6 uses but is not limited to 1K, and the second diode D2 is that light emitting diode uses but not
It is limited to the light emitting diode of model L-C192KRCT.Battery capacity indication unit 7 shows electricity merely with a second diode D2.
Embodiment 3
In the present embodiment, include adapter 1, ETA9640 chips U1, current control list for the charging circuit of lithium battery
Member 2, USB output units 3, charhing unit 4, battery capacity indication unit 7 and enabled control unit 6.Wherein, adapter 1 is electrically connected with city
It connects, for providing direct current, the pin IN of the output end electrical connection ETA9640 chips U1 of adapter for charging circuit.Electric current control
Unit 2 processed is used to control the size of charging current, the pin of the output end electrical connection ETA9640 chips U1 of current control unit 2
ISET.USB output units 3 are electrically connected the pin USB- of ETA9640 chips U1 for exporting control signal, USB output units 3
OUT.Charhing unit 4 exports electric energy, for charging for lithium battery.Battery capacity indication unit 7 is used to show the electricity of lithium battery.It is enabled
Control unit 6 is used for activating charge circuit to charge for lithium battery.
Wherein, adapter 1, ETA9640 chips U1, current control unit 2, USB output units 3, charhing unit 4 and electricity
The structure of indicating unit 7 is same as Example 1, and details are not described herein.
Enabled control unit 6 includes 3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the first triode Q1.Wherein,
The second end of the first end of 3rd resistor R3 the electric energy output end VBAT as charging circuit, 3rd resistor R3 are electrically connected
The pin EN of ETA9640 chips.The first end electrical connection signal input part V of 4th resistance R4in, the second end electricity of the 4th resistance R4
Connect the base stage of the first triode Q1.The first end of 5th resistance R5 is electrically connected the base stage of the first triode Q1, the 5th resistance R5
Second end ground connection.The pin EN of the collector electrical connection ETA9640 chips of first triode Q1, the transmitting of the first triode Q1
Pole is grounded.When adapter 1 accesses, the level transitions of the pin EN of ETA9640 chips can be low level by the first triode Q1.
Wherein, the parameter of 3rd resistor R3, the 4th resistance R4 and the 5th resistance R5 be respectively adopted but be not limited to 10K, 1K,
The triode of model 3904 may be used in 10K, the first triode Q1.
The charging circuit that above-described embodiment 1-3 is provided, can be realized charging using single ETA9640 chips, simplify outer
Circuit is enclosed, and charging circuit does not need active device, reduce the cost of bill of materials (BOM), while making energy conversion
Rate reaches 96% or more, equivalent to increase battery capacity, greatly reduces totle drilling cost；In addition, use can be with for charhing unit
Under the input voltage of 5V, the up to output current of 1A is provided；Moreover, inductance reduces the output ripple of USB output units.This
Outside, the single LED electricity display mode of charging circuit original creation, structure is simpler, and cost is lower, and use is more convenient.
Embodiment 4
The present embodiment provides a kind of lithium battery charging method, which is to use embodiment 1-3 and its change
The charging circuit for lithium battery provided in type and preferred embodiment charges.The detailed circuit structure and work of charging circuit
Above-described embodiment 1-3 is referred to as mode.
Charging can be realized using single ETA9640 chips in the lithium battery charging method, simplifies peripheral circuit, Er Qiechong
Circuit does not need active device, reduces the cost of bill of materials (BOM), at the same make energy conversion rate reach 96% with
On, equivalent to increase battery capacity, greatly reduce totle drilling cost；In addition, charhing unit use can be in the input electricity of 5V
Pressure, provides the up to output current of 1A；Moreover, inductance reduces the output ripple of USB output units.
Embodiment 5
The present embodiment provides a kind of charger, which includes charging circuit, and charging circuit uses embodiment 1-3
And its charging circuit for lithium battery provided in modification and preferred embodiment, the detailed circuit structure and work of the charging circuit
Above-described embodiment 1-3 is referred to as mode.
Charging can be realized using single ETA9640 chips in the charger, simplifies peripheral circuit, and charging circuit is not
Active device is needed, the cost of bill of materials (BOM) is reduced, while energy conversion rate being made to reach 96% or more, is equivalent to
Lithium battery capacity is increased, totle drilling cost is greatly reduced；It can be carried under the input voltage of 5V in addition, charhing unit uses
For being up to the output current of 1A；Moreover, inductance reduces the output ripple of USB output units.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (8)
1. a kind of charging circuit for lithium battery, which is characterized in that the charging circuit include adapter, ETA9640 chips,
Current control unit, USB output units and charhing unit, wherein
For the adapter for providing direct current, the output end of the adapter is electrically connected the pin IN of the ETA9640 chips；
The current control unit is for controlling charging current, described in the output end electrical connection of the current control unit
The pin ISET of ETA9640 chips；
The USB output units are electrically connected drawing for the ETA9640 chips for exporting control signal, the USB output units
Foot USB-OUT；
The charhing unit be used for for lithium battery charge, the charhing unit include the 5th capacitance, the 6th capacitance, the 7th resistance,
Third diode and inductance, wherein the first end of the 5th capacitance is electrically connected the pin BATT of the ETA9640 chips, institute
State electric energy output ends of the pin BATT of ETA9640 chips as charging circuit；The second end of 5th capacitance is grounded；
The first end of 6th capacitance is electrically connected the pin SW of the ETA9640 chips, the second end electricity of the 6th capacitance
Connect the cathode of the first end and the third diode of the 7th resistance；
The anode of the third diode and the second end of the 7th resistance are grounded；
The first end of the inductance is electrically connected the pin BATT of the ETA9640 chips, and the second end of the inductance is electrically connected institute
State the pin SW of ETA9640 chips.
2. the charging circuit according to claim 1 for lithium battery, which is characterized in that the adapter includes the first electricity
Resistance, the first capacitance and the first diode, wherein
The first end electrical connection signal input part V of the first resistorIN, the first resistor second end electrical connection described in
The pin IN of ETA9640 chips；
The first end of first capacitance is electrically connected the pin IN of the ETA9640 chips, the first termination of first capacitance
Ground；
The anode electrical connection signal input part V of first diodeIN, first diode cathode electrical connection described in
The pin IN of ETA9640 chips.
3. the charging circuit according to claim 1 for lithium battery, which is characterized in that the current control unit includes
Second resistance, the first end of the second resistance are electrically connected the pin ISET of the ETA9640 chips, and the of the second resistance
Two ends are grounded.
4. the charging circuit according to claim 1 for lithium battery, which is characterized in that the USB output units include
Third capacitance, the 4th capacitance, the 5th capacitance, wherein
The first end of the third capacitance is electrically connected the pin USB-OUT of the ETA9640 chips, and the second of the third capacitance
End ground connection；
The first end of 4th capacitance is electrically connected the pin USB-OUT of the ETA9640 chips, and the second of the 4th capacitance
End ground connection；
The first end of 5th capacitance is electrically connected the pin USB-OUT of the ETA9640 chips, and the second of the 5th capacitance
End ground connection；
Moreover, signal output end Vs of the pin USB-OUT of the ETA9640 chips as charging circuitout。
5. the charging circuit according to claim 1 for lithium battery, which is characterized in that the charging circuit further includes making
Energy control unit is used to activate the charging circuit to charge for lithium battery；
The enabled control unit includes 3rd resistor, the 4th resistance, the 5th resistance and the first triode；
Wherein, electric energy output end of the first end of the 3rd resistor as the charging circuit, the second of the 3rd resistor
End is electrically connected the pin EN of the ETA9640 chips；
The first end electrical connection signal input part V of 4th resistancein, the second end electrical connection described first of the 4th resistance
The base stage of triode；
The first end of 5th resistance is electrically connected the base stage of first triode, the second end ground connection of the 5th resistance；
The collector of first triode is electrically connected the pin EN of the ETA9640 chips, the transmitting of first triode
Pole is grounded.
6. the charging circuit according to claim 1 for lithium battery, which is characterized in that the charging circuit further includes electricity
Indicating unit is measured, is used to show the electricity of lithium battery；
The battery capacity indication unit includes the 6th resistance and the second diode；Wherein, the first end electrical connection of the 6th resistance
The second end of the anode of second diode, the 6th resistance is electrically connected the pin STAT of the ETA9640 chips；It is described
The cathode of second diode is grounded.
7. the charging circuit according to claim 1 for lithium battery, which is characterized in that the charging circuit further includes fitting
Orchestration indicating unit, the adapter indicating unit include the 8th resistance and the 4th diode, the first end of the 8th resistance
It is electrically connected signal input part VIN, the second end of the 8th resistance is electrically connected the anode of the 4th diode, and the described 4th 2
The cathode of pole pipe is grounded.
8. a kind of charger, the charger includes charging circuit, which is characterized in that the charging circuit uses claim 1-
The charging circuit for lithium battery described in 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820226670.9U CN207967989U (en) | 2018-02-08 | 2018-02-08 | A kind of charging circuit and charger for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820226670.9U CN207967989U (en) | 2018-02-08 | 2018-02-08 | A kind of charging circuit and charger for lithium battery |
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| CN207967989U true CN207967989U (en) | 2018-10-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199450A (en) * | 2018-02-08 | 2018-06-22 | 天津华来科技有限公司 | It is a kind of for the charging circuit of lithium battery, charging method and charger |
-
2018
- 2018-02-08 CN CN201820226670.9U patent/CN207967989U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199450A (en) * | 2018-02-08 | 2018-06-22 | 天津华来科技有限公司 | It is a kind of for the charging circuit of lithium battery, charging method and charger |
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Address after: 9F, Huaqiao venture building, 10 Jinping Road, Ya'an Road, Nankai District, Tianjin, 300113 Patentee after: Tianjin Hualai Technology Co.,Ltd. Address before: 9F, Huaqiao venture building, 10 Jinping Road, Ya'an Road, Nankai District, Tianjin, 300113 Patentee before: TIANJIN HUALAI TECHNOLOGY Co.,Ltd. |
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