CN206922451U - A kind of double cell charging circuit - Google Patents
A kind of double cell charging circuit Download PDFInfo
- Publication number
- CN206922451U CN206922451U CN201720528843.8U CN201720528843U CN206922451U CN 206922451 U CN206922451 U CN 206922451U CN 201720528843 U CN201720528843 U CN 201720528843U CN 206922451 U CN206922451 U CN 206922451U
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- chip
- electrically connected
- switch pipe
- mos switch
- pins
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Abstract
It the utility model is related to a kind of charging circuit technical field, it is espespecially a kind of double cell charging circuit, the utility model is using LEC1760 chips U42 as charge controlling chip, the chip supports the charging of two-way battery, and carry two groups of SMBUS buses, can be respectively to two pieces of different battery electric quantities, the information such as charged state are read out, and it is stored in internal register, then single-chip microcomputer reads chip U42 internal register information by SMBUS buses, and control chip U42 internal register states, realize and the service condition of two batteries of battery BAT1 and battery BAT2 is managed, it is simple in construction, increase cruising time, production efficiency is high, have a safety feature, solves the situation of stand-by time deficiency.
Description
Technical field
A kind of charging circuit technical field is the utility model is related to, is espespecially a kind of double cell charging circuit.
Background technology
Double cell scheme occurs, and due to major defect existing for software and hardware, causes mortal wound, commercially dies young quickly.
Nowadays the double cell project plan comparison of each supplier is similar, substantially close to maturation and stably.
But current double cell scheme, in addition to the logic circuit of complexity, system also needs to increase GPIO interface to add
With control.
Soared existing under CPU architecture background, be limited by CPU high power consumption and the environment of power management can not be realized
Under, using the portable product for CPU design of soaring, serious stand-by time deficiency can all be present.
Utility model content
To solve the above problems, the utility model provides a kind of double cell charging circuit, under existing CPU architecture of soaring
It can strengthen cruising time, it is simple in construction, while the inside registered state of battery chip can be controlled, production efficiency is high.
To achieve the above object, the technical solution adopted in the utility model is：A kind of double cell charging circuit, includes list
Piece machine, charge controlling chip, battery BAT1, battery BAT2, the first MOS switch pipe, the second MOS switch pipe, the single-chip microcomputer lead to
Cross SMBUS buses to be connected with charge controlling chip, the charge controlling chip uses LTC1760 chips U42, the chip U42
No. 30 pins be electrically connected with by resistance R2287 and battery BAT1 BAT1_IN ends, chip U42 No. 31 pins pass through electricity
The BAT1_IN ends for hindering R2286 and battery BAT1 are electrically connected with, and chip U42 No. 28 pins pass through resistance R2291 and battery BAT2
BAT2_IN ends be electrically connected with, chip U42 No. 27 pins are electrically connected by resistance R2290 and battery BAT2 BAT2_IN ends
Connect, chip U42 No. 19 pins are electrically connected with battery BAT1 BAT1_SCL ends, chip U42 No. 23 pins and battery
BAT1 BAT1_SDA ends are electrically connected with, and chip U42 No. 17 pins are electrically connected with battery BAT2 BAT2_SCL ends, chip
U42 No. 21 pins are electrically connected with battery BAT2 BAT2_SDA ends, grid and the chip U42 of first MOS switch pipe
No. 46 pins be electrically connected with, No. 45 pins of the source electrode of the first MOS switch pipe and chip U42 are electrically connected with, the first MOS switch
The drain electrode of pipe is electrically connected with battery BAT1, and the grid of second MOS switch pipe electrically connects with chip U42 No. 47 pins
Connect, the source electrode of the second MOS switch pipe is electrically connected with chip U42 No. 48 pins, the drain electrode of the second MOS switch pipe and battery
BAT2 is electrically connected with.
Preferably, first MOS switch pipe includes metal-oxide-semiconductor Q40A, metal-oxide-semiconductor Q40B, the metal-oxide-semiconductor Q40A, metal-oxide-semiconductor
Q40B grid is connected with chip U42 No. 46 pins, the metal-oxide-semiconductor Q40A, metal-oxide-semiconductor Q40B source electrode with chip U42
No. 45 pins be electrically connected with, the drain electrode of the metal-oxide-semiconductor Q40A is electrically connected with CHG_OUT ends, the drain electrode of the metal-oxide-semiconductor Q40B
It is electrically connected with battery BAT1.
Preferably, second MOS switch pipe includes metal-oxide-semiconductor Q42A, metal-oxide-semiconductor Q42B, the metal-oxide-semiconductor Q42A, metal-oxide-semiconductor
Q42B grid is connected connection with chip U42 No. 47 pins, the metal-oxide-semiconductor Q42A, metal-oxide-semiconductor Q42B source electrode and chip
U42 No. 48 pins are electrically connected with, and drain electrode and the CHG_OUT ends of the metal-oxide-semiconductor Q40A are electrically connected with, the metal-oxide-semiconductor Q40B's
Drain electrode is electrically connected with battery BAT2.
Preferably, No. 33 pins of the chip U42 are grounded by resistance R2293, and No. 32 pins of the chip U42 lead to
Cross resistance R2285 ground connection.
Preferably, also include ESD anti-static circuits, No. 17 pins of the chip U42, No. 19 pins, No. 21 pins,
No. 23 pins are electrically connected with ESD anti-static circuits.
Preferably, also include MOS switch pipe Q39A, MOS switch pipe Q39B, the grid of the MOS switch pipe Q39A with
Chip U42 No. 9 pins are electrically connected with, and MOS switch pipe Q39A drain electrode and battery BTA1 are electrically connected with, MOS switch pipe Q39A
Source electrode and MOS switch pipe Q39B source electrode be electrically connected with, the grid of the MOS switch pipe Q39B and chip U42 No. 8 pins
It is electrically connected with, MOS switch pipe Q39B drain electrode and system power supply are electrically connected with.
Preferably, also include MOS switch pipe Q41A, MOS switch pipe Q41B, the grid of the MOS switch pipe Q41A with
Chip U42 No. 11 pins are electrically connected with, and MOS switch pipe Q41A drain electrode and battery BAT2 are electrically connected with, MOS switch pipe Q41A
Open the light pipe Q41B source electrode of source electrode and MOS be electrically connected with, the grid of the MOS switch pipe Q41B draws with No. 10 of chip U42
Pin is electrically connected with, and MOS switch pipe Q41B drain electrode and system power supply are electrically connected with.
The beneficial effects of the utility model are：
For the utility model using LEC1760 chips U42 as charge controlling chip, the chip supports the charging of two-way battery,
And two groups of SMBUS buses are carried, the information such as two pieces of different battery electric quantities, charged states can be read out respectively, and
Internal register is stored in, then single-chip microcomputer reads chip U42 internal register information, and control chip by SMBUS buses
U42 internal register states, realize and the service condition of two batteries of battery BAT1 and battery BAT2 is managed, structure letter
It is single, increase cruising time, production efficiency is high, has a safety feature, and solves the situation of stand-by time deficiency.
Brief description of the drawings
Fig. 1 is the circuit diagram of utility model.
Fig. 2 is the theory diagram of utility model.
Embodiment
Refer to shown in Fig. 1, the utility model on：A kind of double cell charging circuit, includes single-chip microcomputer, charge control
Chip, battery BAT1, battery BAT2, the first MOS switch pipe, the second MOS switch pipe, the single-chip microcomputer by SMBUS buses with
Charge controlling chip is connected, and the charge controlling chip is passed through using LTC1760 chips U42, the chip U42 No. 30 pins
Resistance R2287 and battery BAT1 BAT1_IN ends are electrically connected with, and chip U42 No. 31 pins pass through resistance R2286 and battery
BAT1 BAT1_IN ends are electrically connected with, and chip U42 No. 28 pins pass through resistance R2291 and battery BAT2 BAT2_IN ends electricity
Property connection, chip U42 No. 27 pins are electrically connected with by resistance R2290 and battery BAT2 BAT2_IN ends, chip U42's
The BAT1_SCL ends of No. 19 pins and battery BAT1 are electrically connected with, chip U42 No. 23 pins and battery BAT1 BAT1_SDA
End is electrically connected with, and chip U42 No. 17 pins are electrically connected with battery BAT2 BAT2_SCL ends, chip U42 No. 21 pins
It is electrically connected with battery BAT2 BAT2_SDA ends, the grid of first MOS switch pipe and chip U42 No. 46 pins are electrical
Connection, the source electrode of the first MOS switch pipe are electrically connected with chip U42 No. 45 pins, the drain electrode of the first MOS switch pipe and battery
BAT1 is electrically connected with, and the grid of second MOS switch pipe is electrically connected with chip U42 No. 47 pins, the second MOS switch pipe
Source electrode and chip U42 No. 48 pins be electrically connected with, drain electrode and the battery BAT2 of the second MOS switch pipe are electrically connected with.
Specifically, first MOS switch pipe includes metal-oxide-semiconductor Q40A, metal-oxide-semiconductor Q40B, the metal-oxide-semiconductor Q40A, metal-oxide-semiconductor
Q40B grid is connected with chip U42 No. 46 pins, the metal-oxide-semiconductor Q40A, metal-oxide-semiconductor Q40B source electrode with chip U42
No. 45 pins be electrically connected with, the drain electrode of the metal-oxide-semiconductor Q40A is electrically connected with CHG_OUT ends, the drain electrode of the metal-oxide-semiconductor Q40B
It is electrically connected with battery BAT1.
Specifically, second MOS switch pipe includes metal-oxide-semiconductor Q42A, metal-oxide-semiconductor Q42B, the metal-oxide-semiconductor Q42A, metal-oxide-semiconductor
Q42B grid is connected connection with chip U42 No. 47 pins, the metal-oxide-semiconductor Q42A, metal-oxide-semiconductor Q42B source electrode and chip
U42 No. 48 pins are electrically connected with, and drain electrode and the CHG_OUT ends of the metal-oxide-semiconductor Q40A are electrically connected with, the metal-oxide-semiconductor Q40B's
Drain electrode is electrically connected with battery BAT2.
Specifically, No. 33 pins of the chip U42 are grounded by resistance R2293, and No. 32 pins of the chip U42 lead to
Cross resistance R2285 ground connection.
Specifically, also include ESD anti-static circuits, No. 17 pins of the chip U42, No. 19 pins, No. 21 pins,
No. 23 pins are electrically connected with ESD anti-static circuits.
Specifically, also include MOS switch pipe Q39A, MOS switch pipe Q39B, the grid of the MOS switch pipe Q39A with
Chip U42 No. 9 pins are electrically connected with, and MOS switch pipe Q39A drain electrode and battery BTA1 are electrically connected with, MOS switch pipe Q39A
Source electrode and MOS switch pipe Q39B source electrode be electrically connected with, the grid of the MOS switch pipe Q39B and chip U42 No. 8 pins
It is electrically connected with, MOS switch pipe Q39B drain electrode and system power supply are electrically connected with.
Specifically, also include MOS switch pipe Q41A, MOS switch pipe Q41B, the grid of the MOS switch pipe Q41A with
Chip U42 No. 11 pins are electrically connected with, and MOS switch pipe Q41A drain electrode and battery BAT2 are electrically connected with, MOS switch pipe Q41A
Open the light pipe Q41B source electrode of source electrode and MOS be electrically connected with, the grid of the MOS switch pipe Q41B draws with No. 10 of chip U42
Pin is electrically connected with, and MOS switch pipe Q41B drain electrode and system power supply are electrically connected with.
Specifically, the metal-oxide-semiconductor Q42A, metal-oxide-semiconductor Q42B, metal-oxide-semiconductor Q40A and metal-oxide-semiconductor Q40B belong to FDS6910 models
Metal-oxide-semiconductor.
In this specific embodiment, double cell circuit is using LEC1760 chips U42 as charge controlling chip, the chip
The charging of two-way battery is supported, and carries two groups of SMBUS buses, respectively SMBUS1 buses and SMBUS2 buses, chip U42's
No. 19 pin SCL1 ends, No. 23 pin SDA1 ends by SMBUS1 buses to battery BAT1 carry out information management, the 17 of chip U42
Number pin SCL2 ends, No. 21 pin SDA2 ends carry out information management by SMBUS2 buses to battery BAT2, and single-chip microcomputer passes through
SMBUS buses are connected with chip U42 No. 18 pin SCL ends, No. 22 pin SDA ends, so as to realize respectively to two blocks of different electricity
The information such as pond electricity, charged state are read out, and are stored in internal register, and then single-chip microcomputer is by reading in chip U42
Portion's register information, and control chip U42 internal register states, realize to two batteries of battery BAT1 and battery BAT2
Service condition is managed, simple in construction, increases cruising time, production efficiency is high, has a safety feature, solves stand-by time not
The situation of foot.
Embodiment of above is only that preferred embodiment of the present utility model is described, not to the utility model
Scope be defined, on the premise of the utility model design spirit is not departed from, this area ordinary skill technical staff is to reality
The various modifications made with new technical scheme and improvement, the protection that claims of the present utility model determine all should be fallen into
In the range of.
Claims (6)
1. a kind of double cell charging circuit, it is characterised in that include single-chip microcomputer, charge controlling chip, battery BAT1, battery
BAT2, the first MOS switch pipe, the second MOS switch pipe, the single-chip microcomputer are connected by SMBUS buses with charge controlling chip, institute
State charge controlling chip and pass through resistance R2287 and battery BAT1 using LTC1760 chips U42, the chip U42 No. 30 pins
BAT1_IN ends be electrically connected with, chip U42 No. 31 pins are electrically connected by resistance R2286 and battery BAT1 BAT1_IN ends
Connect, chip U42 No. 28 pins are electrically connected with by resistance R2291 and battery BAT2 BAT2_IN ends, No. 27 of chip U42
Pin is electrically connected with by resistance R2290 and battery BAT2 BAT2_IN ends, and chip U42 No. 19 pins are with battery BAT1's
BAT1_SCL ends are electrically connected with, and chip U42 No. 23 pins are electrically connected with battery BAT1 BAT1_SDA ends, chip U42's
The BAT2_SCL ends of No. 17 pins and battery BAT2 are electrically connected with, chip U42 No. 21 pins and battery BAT2 BAT2_SDA
End is electrically connected with, and the grid of first MOS switch pipe is electrically connected with chip U42 No. 46 pins, the first MOS switch pipe
Source electrode and chip U42 No. 45 pins are electrically connected with, and drain electrode and the battery BAT1 of the first MOS switch pipe are electrically connected with, and described the
The grid of two MOS switch pipes is electrically connected with chip U42 No. 47 pins, the source electrode of the second MOS switch pipe and the 48 of chip U42
Number pin is electrically connected with, and drain electrode and the battery BAT2 of the second MOS switch pipe are electrically connected with.
2. a kind of double cell charging circuit according to claim 1, it is characterised in that first MOS switch pipe includes
There are metal-oxide-semiconductor Q40A, metal-oxide-semiconductor Q40B, the metal-oxide-semiconductor Q40A, metal-oxide-semiconductor Q40B grid to be connected with chip U42 No. 46 pins,
No. 45 pins of the metal-oxide-semiconductor Q40A, metal-oxide-semiconductor Q40B source electrode with chip U42 are electrically connected with, the leakage of the metal-oxide-semiconductor Q40A
Pole is electrically connected with CHG_OUT ends, and drain electrode and the battery BAT1 of the metal-oxide-semiconductor Q40B are electrically connected with.
3. a kind of double cell charging circuit according to claim 1, it is characterised in that second MOS switch pipe includes
There are metal-oxide-semiconductor Q42A, metal-oxide-semiconductor Q42B, the metal-oxide-semiconductor Q42A, metal-oxide-semiconductor Q42B grid to be connected with chip U42 No. 47 pins,
No. 48 pins of the metal-oxide-semiconductor Q42A, metal-oxide-semiconductor Q42B source electrode with chip U42 are electrically connected with, the leakage of the metal-oxide-semiconductor Q40A
Pole is electrically connected with CHG_OUT ends, and drain electrode and the battery BAT2 of the metal-oxide-semiconductor Q40B are electrically connected with.
A kind of 4. double cell charging circuit according to claim 1, it is characterised in that No. 33 pins of the chip U42
It is grounded by resistance R2293, No. 32 pins of the chip U42 are grounded by resistance R2285.
A kind of 5. double cell charging circuit according to claim 1, it is characterised in that also include MOS switch pipe Q39A,
MOS switch pipe Q39B, the MOS switch pipe Q39A grid are electrically connected with chip U42 No. 9 pins, MOS switch pipe Q39A
Drain electrode and battery BTA1 be electrically connected with, MOS switch pipe Q39A source electrode is electrically connected with MOS switch pipe Q39B source electrode, institute
No. 8 pins of the grid and chip U42 of stating MOS switch pipe Q39B are electrically connected with, MOS switch pipe Q39B drain electrode and system power supply
It is electrically connected with.
A kind of 6. double cell charging circuit according to claim 1, it is characterised in that also include MOS switch pipe Q41A,
MOS switch pipe Q41B, the MOS switch pipe Q41A grid are electrically connected with chip U42 No. 11 pins, MOS switch pipe
Q41A drain electrode is electrically connected with battery BAT2, and open the light pipe Q41B source electrode of MOS switch pipe Q41A source electrode and MOS electrically connects
Connect, the grid of the MOS switch pipe Q41B is electrically connected with chip U42 No. 10 pins, and MOS switch pipe Q41B drain electrode is with being
Power supply of uniting is electrically connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720528843.8U CN206922451U (en) | 2017-05-12 | 2017-05-12 | A kind of double cell charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720528843.8U CN206922451U (en) | 2017-05-12 | 2017-05-12 | A kind of double cell charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206922451U true CN206922451U (en) | 2018-01-23 |
Family
ID=61309196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720528843.8U Expired - Fee Related CN206922451U (en) | 2017-05-12 | 2017-05-12 | A kind of double cell charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206922451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977361A (en) * | 2022-02-22 | 2022-08-30 | 深圳市磐鼎科技有限公司 | Power supply circuit and panel terminal of dual supply double cell |
-
2017
- 2017-05-12 CN CN201720528843.8U patent/CN206922451U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977361A (en) * | 2022-02-22 | 2022-08-30 | 深圳市磐鼎科技有限公司 | Power supply circuit and panel terminal of dual supply double cell |
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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 |
Granted publication date: 20180123 Termination date: 20210512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |