CN208539622U - A kind of battery activated charging circuit - Google Patents
A kind of battery activated charging circuit Download PDFInfo
- Publication number
- CN208539622U CN208539622U CN201821243880.5U CN201821243880U CN208539622U CN 208539622 U CN208539622 U CN 208539622U CN 201821243880 U CN201821243880 U CN 201821243880U CN 208539622 U CN208539622 U CN 208539622U
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- China
- Prior art keywords
- capacitor
- pmos tube
- diode
- lithium battery
- resistor
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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 battery activated charging circuits, including usb charging module, lithium battery module, CSR Bluetooth chip, PMOS tube, first diode, first capacitor device and first resistor, the output end of usb charging module is separately connected the anode of first diode and one end of first resistor, the source electrode of the cathode connection PMOS tube of first diode, the other end of first resistor is separately connected one end of first capacitor device and the grid of PMOS tube, the drain electrode of PMOS tube is separately connected the input terminal of CSR Bluetooth chip and the input terminal of lithium battery module, the other end of first capacitor device is grounded.The utility model is additionally arranged first diode, PMOS tube, first resistor and first capacitor device, and the direct activating lithium battery module of voltage that can be obtained according to usb charging module, without adding external circuit device, practicability is high, can be widely applied to battery technology field.
Description
Technical field
The utility model relates to battery technology field, especially a kind of battery activated charging circuit.
Background technique
Lithium battery is to be frequently used on mobile phone and intelligence wearing product, lithium battery using most battery technologies at present
The characteristics of be that capacity is high, charging is fast, present lithium battery is provided with protection board, the effect of protection board when factory substantially
Be prevent lithium battery from overcharging, over-discharge.Lithium battery is after continuous discharge to protection voltage, and protection board will start protection, and lithium battery is not
There is output again, hereafter lithium battery needs are activated and can just continue to use, including need to charge after being activated.And this is activated
The voltage higher than 4.2V is needed to be added on positive and negative anodes, lithium battery can be just recharged after only activating.And it is common
Activation method is directly to load the 5V voltage of a short time to lithium battery to activate, but if lithium battery is pacified with regulated power supply
Dress in a device, such as is mounted on inside bluetooth headset, and the method for this applied voltage seems not practical enough.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is that: a kind of high battery activated of practicability is provided and is filled
Circuit.
Technical solution adopted in the utility model is:
A kind of battery activated charging circuit, including usb charging module, lithium battery module, CSR Bluetooth chip, PMOS tube,
The output end of one diode, first capacitor device and first resistor, the usb charging module is separately connected the anode of first diode
With one end of first resistor, the source electrode of the cathode connection PMOS tube of the first diode, the other end point of the first resistor
Not Lian Jie one end of first capacitor device and the grid of PMOS tube, the drain electrode of the PMOS tube is separately connected the defeated of CSR Bluetooth chip
Enter the input terminal of end and lithium battery module, the other end ground connection of the first capacitor device.
It further, further include second resistance, the anode of one end connection first diode of the second resistance, described second
The other end of resistance is grounded.
It further, further include the second capacitor, the drain electrode of one end connection PMOS tube of second capacitor, described second
The other end of capacitor is grounded.
It further, further include third capacitor, the drain electrode of one end connection PMOS tube of the third capacitor, the third
The other end of capacitor is grounded.
It further, further include the 4th capacitor, the anode of one end connection first diode of the 4th capacitor is described
The other end of 4th capacitor is grounded.
The beneficial effects of the utility model are: the utility model includes usb charging module, lithium battery module, CSR bluetooth core
Piece, PMOS tube, first diode, first capacitor device and first resistor, the utility model is in usb charging module and lithium battery module
Between be additionally arranged first diode and PMOS tube, and PMOS tube is controlled by the control signal of first resistor and first capacitor device
On-off, can according to usb charging module obtain the direct activating lithium battery module of voltage, without adding external circuit device,
Practicability is high.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram of battery activated charging circuit of the utility model；
Fig. 2 is the charging control circuit figure of traditional CSR bluetooth headset；
Fig. 3 is the charging control circuit figure of the CSR bluetooth headset of the utility model.
Specific embodiment
Referring to Fig.1, a kind of battery activated charging circuit of the utility model, including usb charging module J12, lithium battery module
J11, CSR Bluetooth chip J9, PMOS tube Q1, first diode D1, first capacitor device C1 and first resistor R1, the usb charging
The output end of module J 12 is separately connected the anode of first diode D1 and one end of first resistor R1, the first diode D1
Cathode connection PMOS tube Q1 source electrode 3, the other end of the first resistor R1 be separately connected first capacitor device C1 one end and
The grid 2 of PMOS tube Q1, the drain electrode 1 of the PMOS tube Q1 are separately connected the input terminal and lithium battery module of CSR Bluetooth chip J9
The other end of the input terminal of J11, the first capacitor device C1 is grounded GNDD.
Referring to Fig.1, it is further used as preferred embodiment, further includes second resistance R2, the one of the second resistance R2
The anode of end connection first diode D1, the other end ground connection of the second resistance R2.
Referring to Fig.1, it is further used as preferred embodiment, further includes the second capacitor C2, the second capacitor C2
One end connection PMOS tube Q1 drain electrode 1, the second capacitor C2 the other end ground connection.
Referring to Fig.1, it is further used as preferred embodiment, further includes third capacitor C3, the third capacitor C3
One end connection PMOS tube Q1 drain electrode 1, the third capacitor C3 the other end ground connection.
Referring to Fig.1, it is further used as preferred embodiment, further includes the 4th capacitor C4, the 4th capacitor C4
One end connection first diode D1 anode, the 4th capacitor C4 the other end ground connection.
By taking intelligent breathing monitor as an example, intelligent breathing monitor is needed through bluetooth data transmission signal, with CSR bluetooth
For earphone, as shown in Fig. 2, the charging of lithium battery is to be controlled by CSR Bluetooth chip, but CSR is blue in CSR bluetooth headset
It is exactly after lithium battery Cross prevention that tooth earphone chip, which has a defect, it has no way activating lithium battery, it is necessary to pass through outside
Circuit carrys out after activating lithium battery to hand to CSR Bluetooth chip again and continues control charging.CHG signal in Fig. 2 is CSR Bluetooth chip
External charging power input pin, is directly connected to usb charge port, when connecting charger, external power supply thus pin
It is input to control chip；BAT signal is the pin of CSR Bluetooth chip connection lithium battery, is charge inside output pin, inside is filled
This pin of electric circuit control is exported to reach to lithium battery charge control.
Referring to Fig.1, the utility model is as follows by a kind of working principle of battery activated charging circuit of the utility model:
J12 is usb charging module, and vchg signal is attached to the charging input signal of CSR Bluetooth chip, and BAT signal is
The pin signal of lithium battery module is connected, the utility model increases the one or two pole between vchg signal and BAT signal
Pipe D1 and PMOS tube Q1, and first resistor R1 and first capacitor device C1 for controlling switching pmos on-off.It was using
Cheng Zhong, regardless of whether lithium battery module is in guard mode, when usb charging cable connects usb mouthfuls of moment, due to first capacitor device
It just starts to charge, so voltage is lower, Q1 is connected at this time, therefore the 5V voltage obtained from usb charging module can pass through list
It directly reaches at BAT signal to diode D1 and PMOS tube Q1, because the forward voltage drop of D1 is very low, is added on lithium battery
Voltage is greater than 4.2V, and then activating lithium battery module J 11.And when C1 is fully charged, POMS pipe Q1 cut-off, when POMS pipe ends
Afterwards, vchg signal cannot reach BAT signal end, therefore usb charging module will not give the direct making alive of lithium battery module, and turn
The charging of control lithium battery module is gone by CSR Bluetooth chip.Finally by first resistor and second resistance is added, when lithium battery mould
Block is at full charge, and after usb charging module disconnects charging, first resistor and second resistance can will be put aside onto first capacitor device
Electricity discharges, to guarantee to continue to work normally when charging next time, long service life.
As shown in figure 3, the battery activated charging circuit of the utility model is added in CSR charging control circuit, such as
By in the battery activated charging circuit setting to CSR bluetooth headset chip of the utility model, which can
Lithium battery is reactivated after li-ion cell protection, the function that partial circuit needs are realized is: after activating lithium battery, closing this
Access transfers to CSR Bluetooth chip to go the charging process of control lithium battery.
In conclusion a kind of battery activated charging circuit of the utility model has the advantage that
1), the utility model is additionally arranged first diode and PMOS tube between usb charging module and lithium battery module, and
The on-off of PMOS tube is controlled by the control signal of first resistor and first capacitor device, can be obtained according to usb charging module
The direct activating lithium battery module of voltage, without adding external circuit device, practicability is high；
2), the utility model is by adding first resistor and second resistance, and when lithium battery module is at full charge, usb charges
After module disconnects charging, first resistor and second resistance can be discharged savings to the electricity on first capacitor device, to protect
Continue to work normally when card charging next time, long service life.
It is to be illustrated to the preferable implementation of the utility model, but the utility model is not limited to the reality above
Mode is applied, those skilled in the art can also make various be equal without departing from the spirit of the present invention
Deformation or replacement, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (5)
1. a kind of battery activated charging circuit, it is characterised in that: including usb charging module, lithium battery module, CSR Bluetooth chip,
The output end of PMOS tube, first diode, first capacitor device and first resistor, the usb charging module is separately connected the one or two
The anode of pole pipe and one end of first resistor, the source electrode of the cathode connection PMOS tube of the first diode, the first resistor
The other end be separately connected one end of first capacitor device and the grid of PMOS tube, the drain electrode of the PMOS tube is separately connected CSR indigo plant
The input terminal of tooth chip and the input terminal of lithium battery module, the other end ground connection of the first capacitor device.
2. a kind of battery activated charging circuit according to claim 1, it is characterised in that: it further include second resistance, it is described
The anode of one end connection first diode of second resistance, the other end ground connection of the second resistance.
3. a kind of battery activated charging circuit according to claim 1, it is characterised in that: further include the second capacitor, institute
State the drain electrode of one end connection PMOS tube of the second capacitor, the other end ground connection of second capacitor.
4. a kind of battery activated charging circuit according to claim 1, it is characterised in that: further include third capacitor, institute
State the drain electrode of one end connection PMOS tube of third capacitor, the other end ground connection of the third capacitor.
5. a kind of battery activated charging circuit according to claim 1, it is characterised in that: further include the 4th capacitor, institute
State the anode of one end connection first diode of the 4th capacitor, the other end ground connection of the 4th capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821243880.5U CN208539622U (en) | 2018-08-02 | 2018-08-02 | A kind of battery activated charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821243880.5U CN208539622U (en) | 2018-08-02 | 2018-08-02 | A kind of battery activated charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208539622U true CN208539622U (en) | 2019-02-22 |
Family
ID=65385250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821243880.5U Active CN208539622U (en) | 2018-08-02 | 2018-08-02 | A kind of battery activated charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208539622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265735A (en) * | 2019-06-18 | 2019-09-20 | 华霆（合肥）动力技术有限公司 | Battery thermal runaway protects system and electric car |
-
2018
- 2018-08-02 CN CN201821243880.5U patent/CN208539622U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265735A (en) * | 2019-06-18 | 2019-09-20 | 华霆（合肥）动力技术有限公司 | Battery thermal runaway protects system and electric car |
| CN110265735B (en) * | 2019-06-18 | 2022-04-19 | 华霆（合肥）动力技术有限公司 | Battery thermal runaway protection system and electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 510000, Guangzhou, Guangdong province Tianhe District water shade four horizontal road 34, 1 building 401, A room Patentee after: Guangzhou huansi Industrial Co., Ltd Address before: 510075, Guangzhou, Guangdong province Tianhe District water shade four horizontal road 34, 1 building 401, A room Patentee before: GUANGZHOU HUANSI INSTRUMENT TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |