CN204559158U - A kind of power path management circuit - Google Patents
A kind of power path management circuit Download PDFInfo
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- CN204559158U CN204559158U CN201520136084.1U CN201520136084U CN204559158U CN 204559158 U CN204559158 U CN 204559158U CN 201520136084 U CN201520136084 U CN 201520136084U CN 204559158 U CN204559158 U CN 204559158U
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Abstract
The utility model relates to a kind of power path management circuit, this circuit is integrated with charging control unit primarily of comprising, current-limiting control circuit, pwm control circuit, the charging management chip of charging sample circuit, storage device electric (battery), power supply adaptor, load system, cell switch, current sampling circuit, first sampling resistor, other circuit such as the second sampling resistor or element are formed, this circuit can solve the defect affecting terminal operating because battery terminal voltage is too low existed in prior art, high-voltage charging can be provided to 8.4V battery simultaneously, the useful life of battery can also be improved by power source path management.
Description
Technical field
The utility model relates to mobile communication technology field, particularly relates to a kind of power path management circuit.
Background technology
Along with developing rapidly of mobile communication technology, mobile print terminal has become a part indispensable in people's life, it is widely used in the place that market, restaurant, bank etc. need to pay, so mobile communication manufacturer also start to focus on to improve mobile print terminal ease for use so that the use of user.
Mobile print terminal can realize printed tickets, function such as transmission data etc., but generally adopts 4.2V battery to power, and there is long, the shortcoming such as print speed is slow, flying power is poor heating time.In addition, when cell voltage is lower than 3.0V, mobile print terminal then can automatic shutdown, and now, user wants to use this mobile print terminal, then need to wait for a period of time, and when waiting cell voltage higher than certain thresholding, could start shooting, bring very large inconvenience to user.When adopting 8.4V battery, although print speed can be improved to a certain extent, but there is high-voltage charging difficulty and other series of problems defects such as useful life of rechargeable battery is shorter.
Utility model content
For above-mentioned Problems existing, the utility model discloses a kind of power path management circuit, with solve in prior art exist affect because battery terminal voltage is too low terminal operating defect simultaneously this circuit can provide high-voltage charging to 8.4V battery, and improve useful life of battery by power source path management.
For achieving the above object, the utility model takes following concrete technical scheme:
A kind of power path management circuit, wherein, described circuit comprises:
Charging management chip, storage device electric, power supply adaptor, load system, cell switch, current sampling circuit, the second sampling resistor;
Described power supply adaptor connects described charging management chip and described power supply adaptor also connects described load system by described second sampling resistor, to charge to described charging management chip and described load system;
Described cell switch connects described power supply adaptor, described load system and described storage device electric respectively, described power supply adaptor controls the on off state of described cell switch, and described storage device electric carries out discharge path control according to the on off state of described cell switch to described load system;
Described second sampling resistor is in parallel with described current sampling circuit, and described charging management chip connects described current sampling circuit and described storage device electric respectively;
Wherein, the feedback voltage of described second sampling resistor that described charging management chip is detected according to the voltage of described storage device electric and described current sampling circuit, carry out dynamic adjustments to the charging current of described power supply adaptor, output meets the electric current of storage device electric charging to charge to described storage device electric.
Preferably, above-mentioned power path management circuit, wherein, described charging management chip is integrated with current-limiting control circuit, charging control unit, pwm control circuit and charging sample circuit;
Described current-limiting control circuit connects described pwm control circuit, and described charging control unit connects described current-limiting control circuit, described pwm control circuit and described charging sample circuit respectively.
Preferably, above-mentioned power path management circuit, wherein,
Described current-limiting control circuit connects described power supply adaptor, for limiting the charging current of described power supply adaptor;
Described charging sample circuit connects described storage device electric and described current sampling circuit respectively, for the voltage of sample described feedback voltage and described storage device electric;
Described pwm control circuit connects described storage device electric by one first sampling resistor;
Wherein, described charging control unit is according to the voltage of described feedback voltage and described storage device electric, carry out controlling described current-limiting control circuit and described pwm control circuit, to make described pwm control circuit, dynamic adjustments is carried out to the charging current after restriction, afterwards, described pwm control circuit output meets the electric current of described storage device electric charging to charge to described storage device electric.
Preferably, above-mentioned power path management circuit, wherein, is also connected with an energy-storage travelling wave tube between described pwm control circuit and described first sampling resistor.
Preferably, above-mentioned power path management circuit, wherein, described energy-storage travelling wave tube is power inductance.
Preferably, above-mentioned power path management circuit, wherein, described charging control unit also connects a mobile print terminal handler;
Described printing terminal processor controls described charging control unit work, and receives the output information of described charging control unit.
Preferably, above-mentioned power path management circuit, wherein, the output information of described charging control unit comprises the charging current of storage device electric and the charged state of storage device electric.
Preferably, above-mentioned power path management circuit, wherein, described storage device electric is 2 economize on electricity core batteries.
Preferably, above-mentioned power path management circuit, wherein, described 2 economize on electricity core serial battery connect.
Technique scheme tool has the following advantages or beneficial effect:
The utility model discloses a kind of power path management circuit be applied in mobile print terminal, may be used for various mobile print terminal, effectively can solve long, the shortcoming such as print speed is slow, flying power is poor heating time; When not having battery, Circuits System can normally work; Effectively can also improve the useful life of battery, this circuit improves the ease for use of product, also can reduce the cost of product, reduces old and useless battery to the pollution of environment.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, the utility model and feature, profile and advantage will become more apparent.Mark identical in whole accompanying drawing indicates identical part.Proportionally can not draw accompanying drawing, focus on purport of the present utility model is shown.
Fig. 1 is the structural representation of power path management circuit in the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, but not as restriction of the present utility model.
The inconvenience of mobile print terminal is used for solving user in prior art, heating time is long, print speed is slow, the shortcomings such as flying power difference, the utility model provides a kind of power path management circuit, this circuit is integrated with charging control unit primarily of comprising, current-limiting control circuit, pwm control circuit, the charging management chip of charging sample circuit, storage device electric (battery), power supply adaptor, load system, cell switch, current sampling circuit, first sampling resistor, other circuit such as the second sampling resistor or element are formed, this circuit can solve the defect affecting terminal operating because battery terminal voltage is too low existed in prior art, high-voltage charging can be provided to 8.4V battery simultaneously, the useful life of battery can also be improved by power source path management.
Concrete, as shown in Figure 1, power supply adaptor connects charging management chip and power supply adaptor connects load system by the second sampling resistor (i.e. sampling resistor 2).Power supply adaptor directly can carry out charging work to charging management chip and load system.
Cell switch (being chosen as metal-oxide-semiconductor) is connected respectively to power supply adaptor, load system and storage device electric, power supply adaptor controls the on off state of cell switch, storage device electric carries out discharge path control according to the on off state of cell switch to load system, realizes the charge function to load system.The path control that cell switch discharges to load system for realizing storage device electric, controls to be in cut-off or conducting state by power supply adaptor.
Preferably, in embodiment of the present utility model, this storage device electric is 2 economize on electricity core batteries, and for being connected in series mode.Certain those skilled in the art can require the design of just other number of batteries and connected mode according to concrete electricity, there is no substantial impact to the utility model.
Second sampling resistor is in parallel with current sampling circuit, current sampling circuit connects charging management chip, charging management chip also connects storage device electric by the first sampling resistor (i.e. sampling resistor 1), the charge function to storage device electric can be realized, further, storage device electric carries out the charge function that discharged to load system.
Wherein, the feedback voltage of the second sampling resistor that charging management chip is detected according to the voltage of storage device electric (all illustrating for battery below) and current sampling circuit, dynamic adjustments is carried out to the charging current of power supply adaptor, exports and meet battery charge to charge to battery.In embodiment of the present utility model, current sampling circuit is for detecting the voltage at the second sampling resistor two ends, both end voltage difference is divided by the resistance of the second sampling resistor, the electric current flowing through the second sampling resistor can be obtained, according to the size of this electric current, current sampling circuit output feedack voltage, so that charging management chip controls the charging current to battery, thus realizes power source path management.
In embodiment of the present utility model, this power management chip is specifically integrated with charging control unit, current-limiting control circuit, pwm control circuit, charging sample circuit.Wherein, the connected mode of modules is specially:
Current-limiting control circuit connects pwm control circuit, and charging control unit connects current-limiting control circuit, pwm control circuit and described charging sample circuit respectively.
The connected mode of the modules in power management chip and other circuit or element is specially:
Current-limiting control circuit connects power supply adaptor, and power supply adaptor works on power to charging management chip, realizes mainly through this current-limiting control circuit, and this current-limiting control circuit has and carries out limitation function to the charging current of power supply adaptor.
Charging sample circuit connects battery and current sampling circuit respectively, for above-mentioned feedback voltage and the voltage of battery of sampling, and the result of sampling is sent to charging control unit, carries out follow-up work by charging control unit.
Pwm control circuit connects battery by the first sampling resistor.
Wherein, charging control unit is according to the feedback voltage of charging sampling circuit samples and described cell voltage, carry out controlling current-limiting control circuit and pwm control circuit, to make pwm control circuit, dynamic adjustments is carried out to the charging current after restriction, afterwards, pwm control circuit output meets the electric current of battery charging to charge to battery, and further battery completes electric discharge work.
In embodiment of the present utility model, preferably, an energy-storage travelling wave tube is also connected with between pwm control circuit and the first sampling resistor, this energy-storage travelling wave tube is chosen as power inductance, power inductance, for improving the charge efficiency of charging management chip to battery, reduces the self-heating heat of charging management chip; First sampling resistor, for arranging the battery charge of maximum permission, avoids battery charge excessive, causes damaging.
Charging control unit is also connected with a mobile print terminal handler, by the control of this mobile print terminal handler, and to mobile print terminal handler output information.Charging control unit can regulate the size of the charging current to battery, opens or charge closing function, arranges the parameter that charging is relevant.
Preferably, the output information of charging control unit comprises the charging current of battery and the charged state of battery or other information etc.
In embodiment of the present utility model, preferably, can directly charge to load system, exist when power supply adaptor and provide power supply by power supply adaptor to load system, if power supply adaptor meets the demand of load system, and also having more than needed, then notify that charging management chip opens battery charging function by current sampling circuit by a feedback voltage, and along with the change of load system, dynamic adjustments charging current, makes it meet the charging requirement of load system.Now battery is only in charged state, and power supply adaptor controls cell switch and disconnects, and makes battery not be in fill while the state of putting, thus effectively improves the useful life of battery; Power supply adaptor also closes by controlling cell switch, makes battery carry out discharge path control to load system, completes the charging work of load system.This circuit can also be the high-tension battery charging of 8.4V, and provides Charge Management, in order to avoid overcharge.
In the present embodiment, eliminate the related art method that some are well known to those of ordinary skill in the art, be not described in detail at this.
In sum, the utility model discloses a kind of power path management circuit, this circuit is integrated with charging control unit primarily of comprising, current-limiting control circuit, pwm control circuit, the charging management chip of charging sample circuit, battery, power supply adaptor, load system, cell switch, current sampling circuit, first sampling resistor, other circuit such as the second sampling resistor or element are formed, this circuit can solve the defect affecting terminal operating because battery terminal voltage is too low existed in prior art, high-voltage charging can be provided to 8.4V battery simultaneously, the useful life of battery can also be improved by power source path management.
It should be appreciated by those skilled in the art that those skilled in the art are realizing described change case in conjunction with prior art and above-described embodiment, do not repeat at this.Such change case does not affect flesh and blood of the present utility model, does not repeat them here.
Above preferred embodiment of the present utility model is described.It is to be appreciated that the utility model is not limited to above-mentioned particular implementation, the equipment wherein do not described in detail to the greatest extent and structure are construed as to be implemented with the common mode in this area; Any those of ordinary skill in the art, do not departing under technical solutions of the utility model ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or being revised as the Equivalent embodiments of equivalent variations, this does not affect flesh and blood of the present utility model.Therefore, every content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solutions of the utility model protection.
Claims (9)
1. a power path management circuit, is characterized in that, described circuit comprises:
Charging management chip, storage device electric, power supply adaptor, load system, cell switch, current sampling circuit, the second sampling resistor;
Described power supply adaptor connects described charging management chip and described power supply adaptor also connects described load system by described second sampling resistor, to charge to described charging management chip and described load system;
Described cell switch connects described power supply adaptor, described load system and described storage device electric respectively, described power supply adaptor controls the on off state of described cell switch, and described storage device electric carries out discharge path control according to the on off state of described cell switch to described load system;
Described second sampling resistor is in parallel with described current sampling circuit, and described charging management chip connects described current sampling circuit and described storage device electric respectively;
Wherein, the feedback voltage of described second sampling resistor that described charging management chip is detected according to the voltage of described storage device electric and described current sampling circuit, carry out dynamic adjustments to the charging current of described power supply adaptor, output meets the electric current of storage device electric charging to charge to described storage device electric.
2. power path management circuit as claimed in claim 1, it is characterized in that, described charging management chip is integrated with current-limiting control circuit, charging control unit, pwm control circuit and charging sample circuit;
Described current-limiting control circuit connects described pwm control circuit, and described charging control unit connects described current-limiting control circuit, described pwm control circuit and described charging sample circuit respectively.
3. power path management circuit as claimed in claim 2, is characterized in that,
Described current-limiting control circuit connects described power supply adaptor, for limiting the charging current of described power supply adaptor;
Described charging sample circuit connects described storage device electric and described current sampling circuit respectively, for the voltage of sample described feedback voltage and described storage device electric;
Described pwm control circuit connects described storage device electric by one first sampling resistor;
Wherein, described charging control unit is according to the voltage of described feedback voltage and described storage device electric, carry out controlling described current-limiting control circuit and described pwm control circuit, to make described pwm control circuit, dynamic adjustments is carried out to the charging current after restriction, afterwards, described pwm control circuit output meets the electric current of described storage device electric charging to charge to described storage device electric.
4. power path management circuit as claimed in claim 3, is characterized in that, be also connected with an energy-storage travelling wave tube between described pwm control circuit and described first sampling resistor.
5. power path management circuit as claimed in claim 4, it is characterized in that, described energy-storage travelling wave tube is power inductance.
6. power path management circuit as claimed in claim 3, it is characterized in that, described charging control unit also connects a mobile print terminal handler;
Described printing terminal processor controls described charging control unit work, and receives the output information of described charging control unit.
7. power path management circuit as claimed in claim 6, it is characterized in that, the output information of described charging control unit comprises the charging current of storage device electric and the charged state of storage device electric.
8. power path management circuit as claimed in claim 1, it is characterized in that, described storage device electric is 2 economize on electricity core batteries.
9. power path management circuit as claimed in claim 8, is characterized in that, described 2 economize on electricity core serial battery connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520136084.1U CN204559158U (en) | 2015-03-10 | 2015-03-10 | A kind of power path management circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520136084.1U CN204559158U (en) | 2015-03-10 | 2015-03-10 | A kind of power path management circuit |
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| Publication Number | Publication Date |
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| CN204559158U true CN204559158U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520136084.1U Expired - Fee Related CN204559158U (en) | 2015-03-10 | 2015-03-10 | A kind of power path management circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968469A (en) * | 2018-01-11 | 2018-04-27 | 厦门美图移动科技有限公司 | Charging system, mobile terminal and charger |
| CN108732411A (en) * | 2018-07-27 | 2018-11-02 | 上海艾为电子技术股份有限公司 | A kind of adaptively sampled circuit and its switched charge chip |
-
2015
- 2015-03-10 CN CN201520136084.1U patent/CN204559158U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968469A (en) * | 2018-01-11 | 2018-04-27 | 厦门美图移动科技有限公司 | Charging system, mobile terminal and charger |
| CN107968469B (en) * | 2018-01-11 | 2023-11-03 | 厦门美图移动科技有限公司 | Charging system, mobile terminal and charger |
| CN108732411A (en) * | 2018-07-27 | 2018-11-02 | 上海艾为电子技术股份有限公司 | A kind of adaptively sampled circuit and its switched charge chip |
| CN108732411B (en) * | 2018-07-27 | 2023-10-27 | 上海艾为电子技术股份有限公司 | Self-adaptive sampling circuit and switch charging chip thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 315000 Zhejiang city of Ningbo province high tech Zone to 999 Lane Road, room 5 No. 502-11 Patentee after: Ningbo SageReal Communication Co., Ltd. Address before: 315000 Zhejiang city of Ningbo province Fenghua Dacheng Road No. 999 waveguide B Industrial Park Gate No. 2 room Patentee before: Ningbo SageReal Communication Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20190310 |