CN206041578U - Double cell solos control circuit that charges - Google Patents
Double cell solos control circuit that charges Download PDFInfo
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- CN206041578U CN206041578U CN201621059011.8U CN201621059011U CN206041578U CN 206041578 U CN206041578 U CN 206041578U CN 201621059011 U CN201621059011 U CN 201621059011U CN 206041578 U CN206041578 U CN 206041578U
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- switch pipe
- control circuit
- double cell
- input
- battery
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Abstract
The utility model discloses a double cell solos control circuit that charges, including charging interface, first switch tube, second switch pipe, voltage comparater, sampling resistor and phase inverter, the input of first switch tube, the input of second switch pipe are all connected the interface charges, first battery, second battery are connected respectively to the output of first switch tube, the output of second switch pipe, the one end of sampling resistor is connected first battery, the other end ground connection of sampling resistor, voltage comparater's first input end is connected the one end of sampling resistor, second input connection reference voltage, voltage comparater's output passes through on the one hand the phase inverter is connected the control end of first switch tube, on the other hand lug connection the control end of second switch pipe. The utility model discloses a double cell solos control circuit that charges can detect control double cell through hardware circuit and charge, realizes that the double cell solos charges.
Description
Technical field
The utility model is related to battery boosting technology field, more particularly to a kind of double cell single port charging control circuit.
Background technology
The charging system of double cell needs application processor at present, and charging current is converted into voltage by sampling resistor,
Judge sampled voltage to judge whether battery is full of using processor, when such as setting charging current as 100mA, sampling resistor is
0.1ohm, then when application processor ADC collects 0.01V, then switch another battery and charge, or start battery and mutually rush function.
Double-battery charge electric system has the drawback that at present：Application processor is needed, and writes software, can just carry out battery
The detection of voltage, further realizes double-battery charge Electricity Functional.
Utility model content
The purpose of the utility model embodiment is to provide a kind of double cell single port charging control circuit, without the need for extra process
By charging circuit, device and software realize that double cell charges in the case of controlling in itself, can effectively simplify circuit structure, reduction
Cost and raising user's charging portability.
For achieving the above object, the utility model embodiment provides a kind of double cell single port charging control circuit, including
Charging inlet, first switch pipe, second switch pipe, voltage comparator, sampling resistor and phase inverter；The first switch pipe it is defeated
Enter end, the input of second switch pipe and be all connected with the charging inlet, the output end of the first switch pipe, second switch pipe
Output end connects the first battery, the second battery respectively；One end of the sampling resistor connects first battery, the sampling electricity
The other end ground connection of resistance；The first input end of the voltage comparator connects one end of the sampling resistor, and the second input connects
Reference voltage is connect, on the one hand the output end of the voltage comparator connects the control of the first switch pipe by the phase inverter
End, is on the other hand directly connected to the control end of the second switch pipe.
Compared with prior art, a kind of double cell single port charging control circuit disclosed in the utility model is by using voltage
Comparator compares the first battery charging voltage and reference voltage size, and during the first battery underfill, voltage comparator exports low electricity
Flat shut-off second switch pipe, turns on first switch pipe, realizes that the first battery charges；Once the first battery is fully charged, the first battery
Charging voltage is less than reference voltage, and voltage comparator output high level conducting second switch pipe turns off first switch pipe, realizes the
Two batteries charge, and double cell are charged so as to pass through hardware circuit i.e. achievable automatic switchover path, solve existing skill
Art needs the problem with processor, software detection cell voltage, can effectively simplify circuit structure, reduces cost and improve and use
Family charging portability.
Used as the improvement of such scheme, the double cell single port charging control circuit also includes multiplier (-icator), the voltage ratio
One end of the sampling resistor is connected to by the multiplier (-icator) compared with the first input end of device.
Used as the improvement of such scheme, the first switch pipe and second switch pipe are metal-oxide-semiconductor.
Used as the improvement of such scheme, the first switch pipe and second switch pipe are MOS to pipe.By described MOS pair
Pipe prevents cell voltage from playing a reversed role.
Used as the improvement of such scheme, the sampling resistor is constantan wire.
Used as the improvement of such scheme, the first input end of the voltage comparator is inverting input, and described second is defeated
Enter end for in-phase input end.
Used as the improvement of such scheme, the phase inverter includes the 3rd switching tube and first resistor, the 3rd switching tube
Control end be connected to the output end of the voltage comparator, on the one hand the output end of the 3rd switching tube passes through described first
Resistance connects the charging inlet, on the other hand connects the control end of the first switch pipe, the 3rd switching tube it is public
End ground connection.
Used as the improvement of such scheme, the phase inverter also includes second resistance and 3rd resistor, the 3rd switching tube
Control end be connected to the output end of the voltage comparator, one end connection institute of the 3rd resistor by the second resistance
State the output end of voltage comparator, other end ground connection.
Used as the improvement of such scheme, the multiplier (-icator) includes the first operational amplifier, first operational amplifier
In-phase input end is connected to one end of sampling resistor, and the inverting input of first operational amplifier is connected to the voltage ratio
Compared with the inverting input of device, the output end of first operational amplifier is connected to the inverting input of the voltage comparator.
Used as the improvement of such scheme, the double cell single port charging control circuit replaces the increasing using AS358 chips
Beneficial device and the voltage comparator.The multiplier (-icator) and the voltage comparator are replaced further by the AS358 chips
Hardware circuit is simplified, the stability of a system is improved.
Description of the drawings
Fig. 1 is a kind of circuit structure block diagram of double cell single port charging control circuit in the utility model embodiment 1.
Fig. 2 is the electrical block diagram of phase inverter in the utility model embodiment 1.
Fig. 3 is first switch pipe (MOS is to pipe) electrical block diagram in the utility model embodiment 1.
Fig. 4 is a kind of circuit structure block diagram of double cell single port charging control circuit in the utility model embodiment 2.
Fig. 5 is that voltage comparator (AS358 chips) circuit structure with gain function shows in the utility model embodiment 2
It is intended to.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only the utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Referring to Fig. 1, it is a kind of circuit structure of double cell single port charging control circuit that the utility model embodiment 1 is provided
Block diagram.The double cell single port charging control circuit of the present embodiment 1 includes charging inlet 11, first switch pipe 12, second switch pipe
13rd, phase inverter 14, voltage comparator 15, multiplier (-icator) 16, sampling resistor 17, the first battery 18 and the second battery 19；First switch
The input of pipe 12, the input of second switch pipe 13 are all connected with charging inlet 11, the output end connection of first switch pipe 12 the
One battery 18, the output end of second switch pipe 13 connect the second battery 19；One end of sampling resistor 17 connects the first battery 18, adopts
The other end ground connection of sample resistance 17；The first input end of voltage comparator 15 connects the one of sampling resistor 17 by multiplier (-icator) 16
On the one hand end, the second input connection reference voltage, the output end of voltage comparator 15 connect first switch by phase inverter 14
The control end of pipe 12, is on the other hand directly connected to the control end of second switch pipe 13.
Referring to Fig. 2, it is a kind of phase inverter 14 of double cell single port charging control circuit that the utility model embodiment 1 is provided
Electrical block diagram.The phase inverter 14 of the present embodiment includes the 3rd switching tube 10, first resistor R1, second resistance R2 and
Three resistance R3.
The control end of the 3rd switching tube 10 is connected to output end Sw of voltage comparator 15 by second resistance R2, and the 3rd opens
On the one hand the output end for closing pipe 10 connects the charging inlet VC by first resistor R1, on the other hand connection first switch pipe 12
Control end CTR, the common end grounding of the 3rd switching tube 10, one end of 3rd resistor R3 connect the output end of voltage comparator 15
Sw, other end ground connection.
In the present embodiment, first switch pipe 12 and second switch pipe 13 are MOS to pipe.It is to be understood that, described
One switching tube 12 and second switch pipe 13 can also adopt metal-oxide-semiconductor.
Below, so that first switch pipe 12 adopts MOS to pipe as an example, the particular circuit configurations of first switch pipe 12 are retouched
State.Referring to Fig. 3, it is a kind of first switch pipe 12 of double cell single port charging control circuit that the utility model embodiment 1 is provided
Electrical block diagram.The circuit structure of the first switch pipe of the present embodiment includes the 4th switching tube 121, the first metal-oxide-semiconductor 122
With the second metal-oxide-semiconductor 123, wherein：
The control end of the 4th switching tube 121 (preferably N-type triode) is connected to output end CTR of the 3rd switching tube 10,
On the one hand the output end of the 4th switching tube 121 connects the grid of the first metal-oxide-semiconductor, on the other hand connects the grid of the second metal-oxide-semiconductor 123
Pole, the common end grounding of the 4th switching tube 121, the source electrode connection charging inlet VC of the first metal-oxide-semiconductor 122, the first metal-oxide-semiconductor 122
The drain electrode of drain electrode the second metal-oxide-semiconductor 123 of connection, the source electrode of the second metal-oxide-semiconductor 123 connect the first battery 18.
When being embodied as, charging inlet 11 insertion charger, charger export charging voltage to phase inverter 14, voltage ratio compared with
Device 15 is powered.It should be noted that in the present embodiment, when the insertion charger of charging inlet 11 is started to charge up, by arranging
Acquiescence makes the output end output low level of the voltage comparator 15 of phase inverter 14, so as to turn off second switch pipe 13, and while makes
The output end output high level of the 3rd switching tube 10 of phase inverter 14, conducting first switch pipe 12 are realized opening the first battery 18
Charging path, turns off 19 charging path of the second battery, so as to realize that the first battery 18 is charged.
When just starting to charge up, electric current is larger, and now the voltage of sampling resistor 17 exceedes reference voltage after passing through multiplier (-icator) 16,
Voltage comparator 15 exports low level, after phase inverter 14, keeps first switch pipe 12 to turn on, and second switch pipe 13 is turned off.
For example, when setting charging current as 100mA, sampling resistor 17 is 0.1ohm, and reference voltage is 0.1V, the setting gain of multiplier (-icator) 16
10 times, then, when just starting to charge up, due to the electric current for flowing through sampling resistor 17 larger (100mA), the voltage of sampling resistor 17 leads to
Cross after 10 times of gains the can be kept more than the 0.1V of reference voltage, the output low level of voltage comparator 15, after phase inverter 14
One switching tube 12 is turned on, and second switch pipe 13 is turned off.
After the first battery 18 is full of, on sampling resistor 17, voltage slowly can decline, and now voltage comparator 15 is anti-phase defeated
Enter terminal voltage less than reference voltage, the output high level of voltage comparator 15, by phase inverter 14, turn off first switch pipe 12, lead
Logical second switch pipe 13, realizes shut-off 18 charging path of the first battery, opens 19 charging path of the second battery, so as to realize to the
Two batteries 19 are charged.It is same to illustrate by taking above-mentioned parameter as an example, after the first battery 18 is full of, due to flowing through sampling resistor 17
Electric current diminish (essentially 0) so that sampling resistor 17 voltage decline, even if still less than base after 16 gain of multiplier (-icator)
The 0.1V of quasi- voltage, so, the output high level of voltage comparator 15, after phase inverter 14, shut-off first switch pipe 12, and together
When conducting second switch pipe 13.
After the second battery 19 is also filled with, charger now detect charging current for setting value when, can be automatically switched off
Charger.When setting charging current as 500mA such as charger, fill when charging current reaches 500mA and will be automatically switched off charger
Electricity.Certainly, battery itself can also detect whether itself is fully charged, is filled with and would not recharge.
It should be understood that when the sampling resistor 17 of the present embodiment is sufficiently large, making sampling electricity in 18 charging process of the first battery
More than in the case of reference voltage, the battery single port charging control circuit of the present embodiment can remove the gain to the voltage of resistance 17
Device 16, has no effect on the implementation result of the present embodiment.
It is further to note that in the present embodiment, charger acquiescence output charging voltage, such as the first battery 18 and the
Lithium battery of two batteries 19 using 24V, then the voltage of charger acquiescence output 29.4V.
The double cell single port charging control circuit of embodiment 1 is detected by voltage comparator 15 and controls the first battery 18
Charging path and the second battery 19 charging path, when starting to charge up, by voltage comparator 15 export the first control signal
(low level) is turning on the charging path of the first battery 18, and turns off the battery path of the second battery 19；It is electric when detecting first
After 18 charging complete of pond, export the second control signal (high level) to turn off the charging of the first battery 18 by voltage comparator 15
Path, and the charging path of the second battery 19 is turned on, therefore automatic switchover path is capable of achieving to double electricity by pure hardware circuit
Pond is charged, and solves the problems, such as that prior art needs, with processor, software detection cell voltage, can effectively simplify circuit
Structure, reduces cost and raising user's charging portability.
Referring to Fig. 4, it is a kind of circuit structure of double cell single port charging control circuit that the utility model embodiment 2 is provided
Block diagram.The double cell single port charging control circuit of the present embodiment 2 includes charging inlet 21, first switch pipe 22, second switch pipe
23rd, phase inverter 24, AS358 chips 25, sampling resistor 26, the first battery 27 and the second battery 28.The input of first switch pipe 22
End, the input of second switch pipe 23 are all connected with charging inlet 21, and the output end of first switch pipe 22 connects the first battery 27, the
The output end of two switching tubes 23 connects the second battery 28；One end of sampling resistor 26 connects the first battery 27, sampling resistor 26
The other end is grounded；As shown in figure 5, AS358 chips 25 include two operational amplifiers, first order operational amplifier realizes 10 multiplications
Beneficial amplifier function, pin 1, pin 2, pin 3 correspond to the output end of first order operational amplifier, inverting input, same respectively
Phase input, second level operational amplifier realize voltage comparing function, and pin 5, pin 6, pin 7 correspond to second level computing respectively
The in-phase input end of amplifier, inverting input, output end；Pin 3 connects one end of sampling resistor 26 by the 4th resistance R4,
The 5th resistance R5 of 2 Jing of pin, the 7th resistance R7 connect pin 6, the 7th resistance R7 of 1 Jing of pin connection pins 6,5 linker of pin
On the one hand quasi- voltage, pin 7 connect the input of phase inverter 24, on the other hand the input of connection second switch pipe 23.
Embodiments described above 2 compared with Example 1, employs (the AS358 chips of the voltage comparator with gain function
25) multiplier (-icator) 14 and voltage comparator 15 in the middle of alternative embodiment 1, further simplify circuit structure, improves system steady
It is qualitative.In embodiment 2, charging inlet 21, first switch pipe 22, second switch pipe 23, phase inverter 24, sampling resistor 26, first are electric
Pond 27 and the second battery 28 with charging inlet 11 in embodiment 1, first switch pipe 12, second switch pipe 13, phase inverter 14, adopt
Sample resistance 17, the first battery 18 are identical with the second battery 19, will not be described here.
The above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these improve and moisten
Decorations are also considered as protection domain of the present utility model.
Claims (10)
1. a kind of double cell single port charging control circuit, it is characterised in that including charging inlet, first switch pipe, second switch
Pipe, voltage comparator, sampling resistor and phase inverter；The input of the first switch pipe, the input of second switch pipe connect
Connect the charging inlet, the output end of the first switch pipe, the output end of second switch pipe connect respectively the first battery, second
Battery；One end of the sampling resistor connects first battery, the other end ground connection of the sampling resistor；The voltage ratio compared with
The first input end of device connects one end of the sampling resistor, and the second input connects reference voltage, the voltage comparator
On the one hand output end connects the control end of the first switch pipe by the phase inverter, is on the other hand directly connected to described second
The control end of switching tube.
2. double cell single port charging control circuit as claimed in claim 1, it is characterised in that also including multiplier (-icator), the electricity
The first input end of pressure comparator is connected to one end of the sampling resistor by the multiplier (-icator).
3. double cell single port charging control circuit as claimed in claim 1, it is characterised in that the first switch pipe and second
Switching tube is metal-oxide-semiconductor.
4. double cell single port charging control circuit as claimed in claim 1, it is characterised in that the first switch pipe and second
Switching tube is MOS to pipe.
5. double cell single port charging control circuit as claimed in claim 2, it is characterised in that the sampling resistor is constantan
Silk.
6. double cell single port charging control circuit as claimed in claim 1, it is characterised in that the first of the voltage comparator
Input is inverting input, and second input is in-phase input end.
7. double cell single port charging control circuit as claimed in claim 1, it is characterised in that the phase inverter includes that the 3rd opens
Pipe and first resistor is closed, the control end of the 3rd switching tube is connected to the output end of the voltage comparator, and the described 3rd opens
On the one hand the output end for closing pipe connects the charging inlet by the first resistor, on the other hand connects the first switch pipe
Control end, the common end grounding of the 3rd switching tube.
8. double cell single port charging control circuit as claimed in claim 7, it is characterised in that the phase inverter also includes second
Resistance and 3rd resistor, the control end of the 3rd switching tube are connected to the defeated of the voltage comparator by the second resistance
Go out end, one end of the 3rd resistor connects the output end of the voltage comparator, other end ground connection.
9. double cell single port charging control circuit as claimed in claim 2, it is characterised in that the multiplier (-icator) includes the first fortune
Amplifier is calculated, the in-phase input end of first operational amplifier is connected to one end of sampling resistor, first operation amplifier
The inverting input of device is connected to the inverting input of the voltage comparator, the output end connection of first operational amplifier
In the inverting input of the voltage comparator.
10. double cell single port charging control circuit as claimed in claim 9, it is characterised in that replace institute using AS358 chips
State multiplier (-icator) and the voltage comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621059011.8U CN206041578U (en) | 2016-09-14 | 2016-09-14 | Double cell solos control circuit that charges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621059011.8U CN206041578U (en) | 2016-09-14 | 2016-09-14 | Double cell solos control circuit that charges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206041578U true CN206041578U (en) | 2017-03-22 |
Family
ID=58296195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621059011.8U Active CN206041578U (en) | 2016-09-14 | 2016-09-14 | Double cell solos control circuit that charges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206041578U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014963A (en) * | 2017-12-14 | 2019-07-16 | 浙江万马新能源有限公司 | Charging gun power down unlocks power supply circuit and its control method |
| WO2020098634A1 (en) * | 2018-11-13 | 2020-05-22 | 上海艾为电子技术股份有限公司 | Circuit for detecting full charge of battery and method for detecting full charge of battery, and electronic device |
| CN113301687A (en) * | 2021-06-11 | 2021-08-24 | 乐清市银月光电科技有限公司 | Intelligent fire-fighting emergency controller |
-
2016
- 2016-09-14 CN CN201621059011.8U patent/CN206041578U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014963A (en) * | 2017-12-14 | 2019-07-16 | 浙江万马新能源有限公司 | Charging gun power down unlocks power supply circuit and its control method |
| WO2020098634A1 (en) * | 2018-11-13 | 2020-05-22 | 上海艾为电子技术股份有限公司 | Circuit for detecting full charge of battery and method for detecting full charge of battery, and electronic device |
| CN113301687A (en) * | 2021-06-11 | 2021-08-24 | 乐清市银月光电科技有限公司 | Intelligent fire-fighting emergency controller |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |