CN209104836U - A kind of battery zero volt charging circuit - Google Patents
A kind of battery zero volt charging circuit Download PDFInfo
- Publication number
- CN209104836U CN209104836U CN201821939347.2U CN201821939347U CN209104836U CN 209104836 U CN209104836 U CN 209104836U CN 201821939347 U CN201821939347 U CN 201821939347U CN 209104836 U CN209104836 U CN 209104836U
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- electrically connected
- battery
- charging
- switch
- input terminal
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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 zero volts to play charging circuit comprising single-chip microcontroller, charger, first switch tube, decompression chip and charging main switch；Charger includes charging interface and the capacitor that charging interface prime is arranged in, which is electrically connected with the input terminal of charging main switch, which is electrically connected with the input terminal of decompression chip；The control output end of single-chip microcontroller is electrically connected with the control terminal of first switch tube, the output end of first switch tube is grounded, the input terminal of first switch tube is electrically connected with the control terminal of charging main switch, battery interface is electrically connected with the input terminal of decompression chip, battery interface is electrically connected by feed circuit with the feedback end of single-chip microcontroller, operating voltage needed for being depressured the output end output circuit of chip, the output end of main switch are electrically connected with battery interface.The utility model realizes that battery can charge under extremely low voltage even zero voltage conditions to battery after deep battery discharge.
Description
Technical field
The utility model relates to technical field of battery management, especially a kind of battery zero volt plays charging circuit.
Background technique
General charger is single-stage transforming circuit, can not directly rise and fill in the state that battery is in zero volt.
So, once battery is in zero voltage conditions, charger can not start charging, especially in electricity in the charger using single-stage transformation
After the over of pond, since battery itself from power consumption and is continuously circuit power supply, so that battery is finally at zero voltage conditions,
Prevent driving circuit is from starting.
Utility model content
In view of the above-mentioned deficiencies of the prior art, technical problem to be solved by the utility model is to provide a kind of battery zero volts to rise
Charging circuit.
In order to solve the above technical problems, technical solution adopted in the utility model is: a kind of battery zero volt charging circuit,
It includes single-chip microcontroller U1, charger, first switch tube Q11, decompression chip U2 and charging main switch U3；Charger includes charging
Interface CH+ and the capacitor that charging interface CH+ prime is set, the input terminal of the charging interface CH+ and charging main switch U3
Electrical connection, charging interface CH+ are electrically connected with the input terminal of decompression chip U2；The control output end of single-chip microcontroller U1 and first switch
The control terminal of pipe Q11 is electrically connected, the output end ground connection of first switch tube Q11, and input terminal and the charging master of first switch tube Q11 opens
The control terminal electrical connection of pipe U3 is closed, battery interface B+ is electrically connected with the input terminal of decompression chip U2, and battery interface B+ passes through feedback
Circuit is electrically connected with the feedback end of single-chip microcontroller U1, operating voltage needed for being depressured the output end output circuit of chip U2, charging master
The output end of switching tube U3 is electrically connected with battery interface B+.
In above-mentioned technical proposal, it is serially connected between the charging interface CH+ and the input terminal of first switch tube Q11 in parallel
Zener diode D5 and resistance R48.
In above-mentioned technical proposal, the feed circuit includes second switch Q18, the input terminal of second switch Q18 with
Battery interface B+ electrical connection, the control terminal of second switch Q18 connect with input terminal, the output end and list of second switch Q18
The feedback end of piece machine U1 is electrically connected.
It further include third switching tube Q10, the control terminal of third switching tube Q10 is with single-chip microcontroller U1's in above-mentioned technical proposal
Output end electrical connection, the input terminal of third switching tube Q10 are electrically connected with the control terminal of second switch Q18, third switching tube Q10
Output end be electrically connected with ground terminal.
In above-mentioned technical proposal, the charging interface CH+ connect diode D4 with the input terminal forward direction of decompression chip U2.
The beneficial effects of the utility model are: can be realized and filled in the case where battery is in zero voltage conditions for after under-voltage protection
Provide hardware foundation.
Detailed description of the invention
Fig. 1 is the integrated circuit schematic diagram of the utility model；
Fig. 2 is the local circuit schematic diagram of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
In the charger of single-stage transformation, the output end of charging interface prime i.e. charger can connect the electrolysis of a filtering
Capacitor, it is battery charging that the utility model, which is exactly using the electricity high-speed switch of capacitor storage,.
As shown in Figs. 1-2, a kind of battery zero volt rise charging circuit comprising single-chip microcontroller U1, charger, first switch tube Q11,
It is depressured chip U2 and charging main switch U3；Charger includes charging interface CH+ and the electricity that charging interface CH+ prime is arranged in
Hold, charging interface CH+ is electrically connected with the input terminal of charging main switch U3, and charging interface CH+ is defeated with decompression chip U2's
Enter end electrical connection；The control output end of single-chip microcontroller U1 is electrically connected with the control terminal of first switch tube Q11, first switch tube Q11's
The input terminal of output end ground connection, first switch tube Q11 is electrically connected with the control terminal of charging main switch U3, battery interface B+ and drop
The input terminal electrical connection of chip U2 is pressed, battery interface B+ is electrically connected by feed circuit with the feedback end of single-chip microcontroller U1, and core is depressured
The output end of operating voltage needed for the output end output circuit of piece U2, charging main switch U3 is electrically connected with battery interface B+.
The input terminal forward direction of charging interface CH+ and decompression chip U2 are serially connected with diode D4, and battery interface B+ is defeated with decompression chip U2's
Enter to rectify to being serially connected with another diode D4.
Wherein, zener diode in parallel is serially connected between the charging interface CH+ and the input terminal of first switch tube Q11
D5 and resistance R48.Resistance R49 is serially connected between the input terminal of first switch tube Q11 and the control terminal for the main switch U3 that charges.The
The control of one switching tube Q11 is grounded after terminating a resistance R42.
Wherein, the feed circuit includes second switch Q18, the input terminal and battery interface B+ of second switch Q18
Electrical connection, the control terminal and input terminal of second switch Q18 are electrically connected with resistance R47, the output end and list of second switch Q18
The feedback end (pin U1_P10) of piece machine U1 is electrically connected.Further include third switching tube Q10, the control terminal of third switching tube Q10 with
The output end P11 of single-chip microcontroller U1 is electrically connected, and the input terminal of third switching tube Q10 is electrically connected with the control terminal of second switch Q18,
The output end of third switching tube Q10 is electrically connected with ground terminal.
The battery zero volt of the utility model plays the control method of charging circuit, in the case where cell voltage is extremely low or even 0V state, inserts
Enter charger, charger output voltage is decompression chip U2 power supply by D4 at this time, while it is single for being depressured chip U2 output voltage
Piece machine U1 power supply, single-chip microcontroller U1 start to work, and single-chip microcontroller U1 detects battery pack electricity to its U1_P10 foot by opening U1_P11 foot
Pressure, if the voltage detected is lower than some setting value, the control output end U1_P25 foot of single-chip microcontroller U1 exports PWM square wave at this time
Signal, constantly switching is switched off and on state, the capacitor on charger to first switch tube Q11 under the control of PWM square-wave signal
It is battery momentary charge in Q11 conducting, capacitor itself quickly mends electricity when Q11 ends, continuous in a manner of realizing high-speed switch
Circulation is that battery charges, and is fed back after the voltage preset value filled until cell voltage reaches charger and can normally rise by feed circuit
To the feedback end U1_P10 foot of single-chip microcontroller U1, the control output end U1_P25 of single-chip microcontroller U1 stops output PWM square-wave signal and switchs to
High level, first switch tube Q11 constant conduction charge normal for battery.
Above embodiment only indicates that rather than limits the utility model, therefore all according to the utility model patent application
The equivalent change or modification that method described in range is done, is included in the scope of the utility model patent application.
Claims (5)
1. a kind of battery zero volt plays charging circuit, it is characterised in that: including single-chip microcontroller U1, charger, first switch tube Q11, decompression
Chip U2 and charging main switch U3；Charger includes charging interface CH+ and the capacitor that charging interface CH+ prime is arranged in,
Charging interface CH+ is electrically connected with the input terminal of charging main switch U3, the input terminal of charging interface CH+ and decompression chip U2
Electrical connection；The control output end of single-chip microcontroller U1 is electrically connected with the control terminal of first switch tube Q11, the output of first switch tube Q11
The input terminal of end ground connection, first switch tube Q11 is electrically connected with the control terminal of charging main switch U3, battery interface B+ and decompression core
The input terminal of piece U2 is electrically connected, and battery interface B+ is electrically connected by feed circuit with the feedback end of single-chip microcontroller U1, is depressured chip U2
Output end output circuit needed for operating voltage, charging main switch U3 output end be electrically connected with battery interface B+.
2. a kind of battery zero volt according to claim 1 plays charging circuit, it is characterised in that: the charging interface CH+ and the
Zener diode D5 and resistance R48 in parallel are serially connected between the input terminal of one switching tube Q11.
3. a kind of battery zero volt according to claim 1 plays charging circuit, it is characterised in that: the feed circuit includes second
The input terminal of switching tube Q18, second switch Q18 are electrically connected with battery interface B+, the control terminal and input of second switch Q18
End connects, and the output end of second switch Q18 is electrically connected with the feedback end of single-chip microcontroller U1.
4. a kind of battery zero volt according to claim 3 plays charging circuit, it is characterised in that: it further include third switching tube Q10,
The control terminal of third switching tube Q10 is electrically connected with the output end of single-chip microcontroller U1, the input terminal and second switch of third switching tube Q10
The control terminal of pipe Q18 is electrically connected, and the output end of third switching tube Q10 is electrically connected with ground terminal.
5. a kind of battery zero volt according to claim 1 plays charging circuit, it is characterised in that: the charging interface CH+ and drop
The input terminal forward direction of chip U2 is pressed to connect diode D4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821939347.2U CN209104836U (en) | 2018-11-23 | 2018-11-23 | A kind of battery zero volt charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821939347.2U CN209104836U (en) | 2018-11-23 | 2018-11-23 | A kind of battery zero volt charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209104836U true CN209104836U (en) | 2019-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821939347.2U Active CN209104836U (en) | 2018-11-23 | 2018-11-23 | A kind of battery zero volt charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209104836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347174A (en) * | 2018-11-23 | 2019-02-15 | 深圳众鑫凯科技有限公司 | A kind of battery zero volt charging circuit and its control method |
-
2018
- 2018-11-23 CN CN201821939347.2U patent/CN209104836U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347174A (en) * | 2018-11-23 | 2019-02-15 | 深圳众鑫凯科技有限公司 | A kind of battery zero volt charging circuit and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220622 Address after: 523000 floor 2, building C, shujiu Industrial Zone, shujiu village, Changping Town, Dongguan City, Guangdong Province Patentee after: Dongguan zhongxinkai Electronic Technology Co.,Ltd. Address before: 518000 No. 615, 6 / F, East Qiaohe Road, Tianfu Road, Qiaotou community, Fuyong street, Bao'an District, Shenzhen, Guangdong Province Patentee before: SHENZHEN RAYWOLFTECH SCIENCE & TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right |