CN206533177U - A kind of portable power source charge control loop - Google Patents
A kind of portable power source charge control loop Download PDFInfo
- Publication number
- CN206533177U CN206533177U CN201720035039.6U CN201720035039U CN206533177U CN 206533177 U CN206533177 U CN 206533177U CN 201720035039 U CN201720035039 U CN 201720035039U CN 206533177 U CN206533177 U CN 206533177U
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- Prior art keywords
- charging
- mcu
- charging modules
- comparator
- modules
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- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of portable power source charge control loop; including AC charging modules U3, battery core module, MCU and protection plate module U4; it is connected between the AC charging modules U3 and MCU by Regulate signal circuit; the AC charging modules U3 is connected by switching tube Q1 with battery core module; the MCU is connected with switching tube Q1, and the protection plate module U4 is connected by resistance R3 with AC charging modules U3；The circuit for signal conditioning includes amplifier U2, filter circuit U5 and comparator U1, the MCU is connected by filter circuit U5 with comparator U1, the comparator U1 is connected with AC charging modules U3, described amplifier U2 one end is connected by resistance R3 with AC charging modules U3, and the other end is connected with comparator U1.The utility model is by controlling PWM to be managed AC charging currents, charged by AC charging modules U3 directly against battery core module, and charging current can be adjusted, no longer it is managed for AC charging module U3 output voltage, reduces DC voltage reduction modules.
Description
Technical field
The utility model is related to charge control loop technical field, specially a kind of portable power source charge control loop.
Background technology
With the development of electronic product, the need for simplifying trip to meet that people are daily, consumption electronic product it is small-sized
Lighting turns into the development trend of main flow.This requires that the volume weight of product in itself needs continuous reduce.And another aspect hand
In use, the demand for energy is but constantly increasing the portable mobile termianls such as machine, in existing battery technology water
Under flat, small portable then means that battery capacity is not in temporarily that larger leap increases, therefore for rapid large-current
The demand of charging is more and more urgent.
And with the quickening pace of modern life, in order to meet the shape that portable power source during trip is in full charge at any time in itself
State, corresponding then to require that portable power source needs in terms of the charging interval in itself quicker.
And due to traditional Portable power source based on AC charging modules export constant voltage framework meeting small
On the premise of type is light, AC charging modules and DC decompressions or boost module are in narrow space when high current high power charges
The problem of temperature rise that interior heat dissipation problems are brought seems especially prominent, because the heat power consumption of this pattern comes from two sides
Face：AC-DC units and charge control buck-boost units.
The charge mode framework that tradition carries the portable power source of AC chargers is as shown in Figure 1：After civil power input, charged by AC
Module exports constant voltage, and constant voltage can just access the receptible electricity of battery institute by the voltage conversion of DC modules again
Pressure, then charges to battery module again.Each module is independent under such a constant pressure framework, due to each other
There is no association in logic, therefore there is following defect：
Because interiors of products is integrated with AC charger modules and DC voltage reduction modules simultaneously, cause it can not reduce product empty
Between volume, it is impossible to accomplish more small portable；
Due to there is AC modules and DC voltage reduction modules simultaneously, therefore in the case of large current charge, produced by both
Heat will cause the temperature of product in itself turn into a big problem；
Therefore, how while small portable large current charge simultaneously is met, product can be effectively controlled to fill in itself
Temperature when electric is our urgent problems.
Utility model content
The purpose of this utility model is to provide a kind of portable power source charge control loop, to solve in above-mentioned background technology
While the existing portable power source proposed can not take into account small portable large current charge the problem of control charging temperature.
To achieve the above object, the utility model provides following technical scheme：A kind of portable power source charge control loop, bag
AC charging modules U3, battery core module, MCU and protection plate module U4 are included, is believed between AC the charging modules U3 and MCU by adjusting
Number circuit is connected, and the AC charging modules U3 is connected by switching tube Q1 with battery core module, and the MCU and switching tube Q1 connects
Connect, the protection plate module U4 is connected by resistance R3 with AC charging modules U3；The circuit for signal conditioning include amplifier U2,
Filter circuit U5 and comparator U1, the MCU are connected by filter circuit U5 with comparator U1, and the comparator U1 and AC fills
Electric module U3 connections, described amplifier U2 one end is connected by resistance R3 with AC charging modules U3, and the other end connects with comparator U1
Connect.
Preferably, also including NTC, the NTC is connected with MCU.
Preferably, also including divider resistance R1 and divider resistance R2, the MCU pass through divider resistance R1 and partial pressure
Resistance R2 is connected with filter circuit U5, and unilateral diode D1 is provided between the divider resistance R1 and filter circuit U5.
Compared with prior art, the beneficial effects of the utility model are：The portable power source charge control loop is based on can
Adjust constant-current charge architecture mode, by controlling PWM to be managed AC charging currents, by AC charging modules U3 directly against
Battery core module is charged, and charging current can be adjusted, and now the output no longer for AC charging module U3 is electric
Pressure is managed, and so reduces intermediate link DC voltage reduction modules.On the one hand the spatial volume of interiors of products pcb board is reduced,
Still further aspect can reduce the thermal losses in small space, can be with while small portable and large current charge is met
Effectively reduce the problem of temperature rise brought by thermal losses.
Brief description of the drawings
Fig. 1 carries the charge mode configuration diagram of AC portable power sources for tradition；
Fig. 2 is the new charge mode configuration diagram for carrying AC portable power sources；
Fig. 3 is logic control circuit structure chart of the present utility model.
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 a part of embodiment of the utility model, 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 obtained, belongs to the scope of the utility model protection.
Fig. 1-3 are referred to, the utility model provides a kind of technical scheme：A kind of portable power source charge control loop, including
AC charging modules U3, battery core module 2, MCU3 and protection plate module U44, by adjusting between AC the charging modules U31 and MCU3
Section signal circuit is connected, and the AC charging modules U31 is connected by switching tube Q1 with battery core module 2, the MCU3 and switch
Pipe Q1 connections, the protection plate module U44 is connected by resistance R3 with AC charging modules U31；The circuit for signal conditioning includes
Amplifier U25, filter circuit U56 and comparator U1, the MCU3 are connected by filter circuit U56 with comparator U1, the ratio
It is connected compared with device U1 with AC charging modules U31, described amplifier U25 one end is connected by resistance R3 with AC charging modules U31, separately
One end is connected with comparator U1.The MCU3 is connected by divider resistance R1 and divider resistance R2 with filter circuit U56, described point
Unilateral diode D1 is provided between piezoresistance R1 and filter circuit U56.Also include NTC, the NTC is connected with MCU.
In above-described embodiment, specifically, AC charging modules U31 output end is connected with battery core module 2, it is not required to AC's
The output voltage of charging module is managed, and so reduces intermediate link DC voltage reduction modules, so as to reduce the space of pcb board
Volume, reduces the thermal losses in small space.
Operation principle：When using the portable power source charge control loop, when built-in AC charging modules U31 accesses civil power
When, AC charging modules U31 sends signal S1 to MCU3, and MCU3, which is received, to be entered wake-up states by sleep state after signal and judge
Signal S1 validity, as S1 is invalid, goes successively to sleep state；Judge that S1 effectively then MCU3 initially enter charging procedure section,
Single-chip microcomputer starts some preconditions for judging to meet required for charging, such as battery core BAT voltages and interior after receipt of the signal
Portion thermo-sensitive resistor RT voltage VRT, according to the difference of VBAT magnitude of voltage, start the PWM to I/O one fixed duty cycle of mouth
Ripple, and charging end switching tube Q1 is opened, battery core is charged.Pass through unidirectional two pole after the partial pressure that PWM ripples pass through R1 and R2
Pipe D1 enters filter circuit U56, in the presence of filter circuit U56, and PWM ripples are filtered into smooth voltage into comparator U1,
A more stable voltage VPWM is now obtained (because this piezoelectric voltage is got by dutycycle PWM filtering, with stronger
Antijamming capability), the comparator U1 of voltage VPWM access charge control loops input one end IN+.Now, resistance is flowed through
Electric current formed voltage VR3 on R3, sends into the comparator U1 other end after a certain degree of amplifications of amplifier U25
IN-.It is compared by comparator U1 after two groups of signals VR3, VPWM and obtains an output voltage V4, then by difference signal
V4 starts to adjust the working condition of charger circuit, output after feeding back to AC charging modules U31, AC charging module U31 responses
One adjustable constant electric current IDC, simultaneously because Q1 switching tubes have already turned on, is charged by Q1 to BAT.Now MCU3
Detection charging current IDC size, when MCU3 detects charging current IDC less than rated value, proceeds by dynamic tune in real time
It is whole gradually to increase PWM dutycycle, so as to gradually increase the positive threshold reference voltage VPWM of comparator, compel to flow through on R3
Electric current increases to maintain the stable state of this signal feedback circuit, so as to improve AC charging modules U34 output current IDC；
Similarly, when MCU3 detects charging current overrate, gradually decrease PWM duty cycle to reduce AC charging modules U34
Output current IDC.
Monitor battery core voltage VBAT in real time by MCU3, when battery core voltage VBAT is relatively low, provide a relatively low PWM real
Existing low current charge, battery core will not be damaged because of large current charge is carried out in the case of low pressure in itself by thereby protecting battery core,
Large current charge is proceeded by after battery core voltage rises to certain value, IOUT can be set according to the difference of actual conditions
Different charging currents, when soon completely being filled to battery core voltage, dutycycle PWM is to realize trickle charge for reduction, until MCU3 detections
Full charge pressure is reached to VBAT voltages, now on-off switching tube Q1 again, stop charging；
This process, AC charging modules U31 output voltage VO UT follows battery core voltage VBAT change and changed, protection board
Module U44 is stablized to voltage VOUT, and AC charging modules U31 will no longer control output voltage VO UT；
The process that this mode had both charged for adjustable constant-flow, it is real due to during AC charging module U31 reality outputs
Be decompression adjustable constant-flow charging, in the case where ensure that battery core charging current, AC charging modules U31 output is reduced as far as possible
Power, so as to which while the portable power source charging interval is shortened, AC charging modules U31 thermal losses is reduced as far as possible, so that
While can solve the problem that the guarantee charging current in small space, the problems of excessive heat of interiors of products is effectively reduced.
In summary, general principle of the present utility model, principal character and advantage has been shown and described above.The industry
Technical staff it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification only
It is to illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model also has
Various changes and modifications, these changes and improvements are both fallen within the range of claimed the utility model.The utility model requirement
Protection domain is defined by appended claims and its effect thing.
Claims (3)
1. a kind of portable power source charge control loop, it is characterised in that：Including AC charging modules U3, battery core module, MCU and protection
Plate module U4, is connected between the AC charging modules U3 and MCU by Regulate signal circuit, and the AC charging modules U3 passes through
Switching tube Q1 is connected with battery core module, and the MCU is connected with switching tube Q1, and the protection plate module U4 is filled by resistance R3 and AC
Electric module U3 connections；The circuit for signal conditioning includes amplifier U2, filter circuit U5 and comparator U1, the MCU and passes through filter
Wave circuit U5 is connected with comparator U1, and the comparator U1 is connected with AC charging modules U3, and described amplifier U2 one end passes through electricity
Resistance R3 is connected with AC charging modules U3, and the other end is connected with comparator U1.
2. a kind of portable power source charge control loop according to claim 1, it is characterised in that：Also include NTC, it is described
NTC is connected with MCU.
3. a kind of portable power source charge control loop according to claim 1, it is characterised in that：Also include divider resistance
R1 and divider resistance R2, the MCU are connected by divider resistance R1 and divider resistance R2 with filter circuit U5, the divider resistance
Unilateral diode D1 is provided between R1 and filter circuit U5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720035039.6U CN206533177U (en) | 2017-01-12 | 2017-01-12 | A kind of portable power source charge control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720035039.6U CN206533177U (en) | 2017-01-12 | 2017-01-12 | A kind of portable power source charge control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206533177U true CN206533177U (en) | 2017-09-29 |
Family
ID=59920345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720035039.6U Withdrawn - After Issue CN206533177U (en) | 2017-01-12 | 2017-01-12 | A kind of portable power source charge control loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206533177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787057A (en) * | 2017-01-12 | 2017-05-31 | 东莞市太业电子股份有限公司 | A kind of portable power source charge control loop |
-
2017
- 2017-01-12 CN CN201720035039.6U patent/CN206533177U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787057A (en) * | 2017-01-12 | 2017-05-31 | 东莞市太业电子股份有限公司 | A kind of portable power source charge control loop |
| CN106787057B (en) * | 2017-01-12 | 2023-09-26 | 东莞市太业电子股份有限公司 | Mobile power supply charging control loop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170929 Effective date of abandoning: 20230926 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170929 Effective date of abandoning: 20230926 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |