CN106787055B

CN106787055B - A kind of charging circuit, system, method and terminal

Info

Publication number: CN106787055B
Application number: CN201611087826.1A
Authority: CN
Inventors: 刘小勇; 易鹏程
Original assignee: Meizu Technology Co Ltd
Current assignee: Meizu Technology Co Ltd
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2018-10-26
Anticipated expiration: 2036-11-30
Also published as: CN106787055A

Abstract

The invention discloses a kind of charging circuit, system, method and terminals, it may include control module, charge pump conversion module, buck conversion module and battery module；The control module, voltage and electric current for acquiring the battery module, and control signal is sent to the charge pump conversion module and the buck conversion module according to the voltage and electric current, to switch the power-up state of the charge pump conversion module and the buck conversion module；The control signal includes controlling the charge pump conversion module to power on and the first control signal of the buck conversion module power down, and it is powered on and the second control signal of the charge pump conversion module power down to control the buck conversion module.As a result of efficient charge pump conversion module, thus improves decompression transfer efficiency, reduces charging fever.

Description

A kind of charging circuit, system, method and terminal

Technical field

The present invention relates to charging technique field more particularly to a kind of charging circuit, system, method and terminals.

Background technology

With the continuous promotion of terminal equipment configuration, terminal device becomes increasingly the demand and consumption of electricity Greatly, this results in the charge frequency of terminal device also to become higher and higher, has seriously affected the charge efficiency of terminal device, reduces The usage experience of user.Currently, being set to terminal frequently with the charging circuit based on Buck Switch Charger circuits in the industry The standby charging for carrying out high current.

But since Buck Switch Charger circuits include that there are the output of coil loss and core loss electricity Sense, thus the decompression transfer efficiency that may result in entire charging circuit is relatively low (in general, below 91%) so that charging Circuit cannot achieve real large current charge (i.e. charging current is still smaller) so that the charging rate of charging circuit compared with It is small, the charging time is longer and charge efficiency is relatively low, and due to outputting inductance loss energy would generally be converted to thermal energy, in turn Can also there are problems that charging circuit fever.

That is, existing charging circuit has that decompression transfer efficiency is relatively low and fever is more serious.

Invention content

An embodiment of the present invention provides a kind of charging circuit, system, method and terminals, to solve existing charging circuit There is a problem of that decompression transfer efficiency is relatively low and fever is more serious.

An embodiment of the present invention provides a kind of charging circuits, including control module, charge pump conversion module, buck to convert Module and battery module, wherein the control module is converted with the charge pump conversion module and the buck respectively Module is connected to；The charge pump conversion module and the buck conversion module are connected to the battery module, wherein：

The control module, voltage and electric current for acquiring the battery module, and according to the voltage and electricity It flows to the charge pump conversion module and the buck conversion module sends control signal, converted with switching the charge pump The power-up state of module and the buck conversion module；The control signal includes controlling the charge pump modulus of conversion Block powers on and the first control signal of the buck conversion module power down, and, to control the buck modulus of conversion Block powers on and the second control signal of the charge pump conversion module power down.

An embodiment of the present invention provides a kind of charging system, including filling described in adaptation module and the embodiment of the present invention Circuit；The adaptation module is connected to the control module in the charging circuit, wherein：

The control module, for when it is specific adaptation module to determine the adaptation module, being converted to the charge pump Module and the buck conversion module send first control signal or second control signal；Determining the adaptation module For nonspecific adaptation module when, send the second control letter to the charge pump conversion module and the buck conversion module Number；The first control signal powers on and the buck conversion module power down for controlling the charge pump conversion module, The second control signal powers on and the charge pump conversion module power down for controlling the buck conversion module.

An embodiment of the present invention provides a kind of charging methods applied to terminal, including：

Detect the voltage and electric current of battery module；

According to the voltage and the electric current, control letter is sent out to charge pump conversion module and buck conversion module Number, to switch the power-up state of the charge pump conversion module and the buck conversion module；The control signal includes It is powered on and the first control signal of the buck conversion module power down to control the charge pump conversion module, and, It is powered on and the second control signal of the charge pump conversion module power down to control the buck conversion module.

The embodiment of the present invention additionally provides a kind of terminal, including：

Detection unit, voltage and electric current for detecting battery module；

Control unit, for according to the voltage and the electric current, being converted to charge pump conversion module and buck Module sends out control signal, to switch the power-up state of the charge pump conversion module and the buck conversion module；Institute State control signal include control the charge pump conversion module power on and the buck conversion module power down first Control signal, and, to control the buck conversion module power on and the charge pump conversion module power down second Control signal.

The present invention has the beneficial effect that：

A kind of charging circuit, system, method and terminal are provided in the embodiment of the present invention, it may include control module, charge Pump conversion module, buck conversion module and battery module；Wherein, the control module respectively with the charge pump modulus of conversion Block and buck conversion module connection；The charge pump conversion module and the buck conversion module with it is described Battery module is connected to；The control module, voltage and electric current for acquiring the battery module, and according to the voltage with And electric current sends control signal to the charge pump conversion module and the buck conversion module, to switch the charge pump The power-up state of conversion module and the buck conversion module；The control signal includes controlling the charge pump to turn Mold changing block powers on and the first control signal of the buck conversion module power down, and, turn to control the buck Mold changing block powers on and the second control signal of the charge pump conversion module power down.Compared with the prior art, of the invention real Apply in example, as a result of the charge pump conversion module with the characteristics such as high decompression transfer efficiency and few fever, thus into When the charging of row terminal etc., decompression transfer efficiency efficiency can not only be promoted, moreover it is possible to reduce the fever of terminal etc..To solve The problem that the existing decompression transfer efficiency of existing charging circuit is relatively low and fever is more serious.

Description of the drawings

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings Attached drawing.

Fig. 1 show the structural schematic diagram of the charging circuit provided in the embodiment of the present invention one；

Fig. 2 show the physical circuit figure of the charging circuit provided in the embodiment of the present invention one；

It is a kind of work flow diagram of the charging circuit provided in the embodiment of the present invention one described in Fig. 3；

Fig. 4 show the structural schematic diagram of the charging system provided in the embodiment of the present invention two；

Fig. 5 show the fundamental diagram of the charging system provided in the embodiment of the present invention two；

Fig. 6 show the flow diagram of the charging method provided in the embodiment of the present invention three；

Fig. 7 show the structural schematic diagram of the terminal provided in the embodiment of the present invention four.

Specific implementation mode

To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts All other embodiment, shall fall within the protection scope of the present invention.

Embodiment one：

In order to solve the problems, such as that decompression transfer efficiency present in existing charging circuit is relatively low and fever is more serious, this Inventive embodiments one provide a kind of charging circuit, can be applied in the terminals such as mobile phone, tablet computer, as shown in Figure 1, it is this The structural schematic diagram of charging circuit described in inventive embodiments one.Specifically, as shown in Figure 1, the charging circuit may include Control module 11, charge pump conversion module 12, buck conversion module 13 and battery module 14, wherein the control module 11 are connected to the charge pump conversion module 12 and the buck conversion module 13 respectively；The charge pump conversion module 12 And the buck conversion module 13 is connected to the battery module 14；

The control module 11, voltage and electric current for acquiring the battery module 14, and according to the voltage with And electric current sends control signal to the charge pump conversion module 12 and the buck conversion module 13, to switch the electricity Lotus pumps the power-up state of conversion module 12 and the buck conversion module 13；The control signal include control it is described Charge pump conversion module 12 powers on and the first control signal of 13 power down of buck conversion module, and, to control The buck conversion module 13 powers on and the second control signal of 12 power down of charge pump conversion module.

It should be noted that as shown in Figure 1, the control module 11 usually can be by (specific with the battery module 14 Can be voltameter corresponding with the battery module 14) between communication line come acquire the voltage of the battery module 14 with And electric current.Optionally, the voltameter may be disposed in the battery module 14 or except the battery module 14, this Inventive embodiments do not repeat this.

It should be noted that the control module 11 can not only realize that the transmission of control signal (such as may be used by software mode Corresponding software program is write, the transmission of the execution control signal of the software program is passed through), it also can directly pass through hardware mode reality The now transmission (transmission that control signal is such as realized by specific hardware chip) of control signal.In addition, in the embodiment of the present invention, The first control signal and the second control signal usually can be flexibly arranged according to actual conditions, such as can be by the first control Signal is set as high level, sets second control signal to low level etc., and the embodiment of the present invention does not repeat this.

Further more, it should be noted that in embodiments of the present invention, the charge pump conversion module 12 can be existing Charge Pump Converter circuits；The buck conversion module 13 can be existing Buck Switch Charger Circuit.

That is, the charging circuit described in the embodiment of the present invention, it may include control module, charge pump conversion module, Buck conversion module and battery module；Wherein, the control module respectively with the charge pump conversion module and described Buck conversion module is connected to；The charge pump conversion module and the buck conversion module connect with the battery module It is logical；The control module can be used for acquiring the voltage and electric current of the battery module, and can be according to the voltage and electric current Control signal is sent to the charge pump conversion module and the buck conversion module, to switch the charge pump modulus of conversion The power-up state of block and the buck conversion module；The control signal may include controlling the charge pump modulus of conversion Block powers on and the first control signal of the buck conversion module power down, and, to control the buck modulus of conversion Block powers on and the second control signal of the charge pump conversion module power down.Compared with the prior art, as a result of with The charge pump conversion module of the characteristics such as height decompression transfer efficiency and few fever, thus when carrying out the charging of terminal etc., not only Decompression transfer efficiency efficiency can be promoted, moreover it is possible to reduce the fever of terminal etc..To solve existing for existing charging circuit It is depressured the problem that transfer efficiency is relatively low and fever is more serious.

It should be noted that under normal conditions, battery (the battery mould i.e. described in the embodiment of the present invention in terminal device Block 14) charging stage may include tricke phase stage, charging stage, CC (Constant Current, the constant current) stages and CV (Constant Voltage, the constant voltage) stages, and, the CV stages can also be subdivided into early period and the CV ranks in CV stages It in the later stage of section, does not repeat herein.

Specifically, the control module 11, can be specifically used for when the battery module 14 voltage be more than predeterminated voltage and When the electric current of the battery module 14 is more than predetermined current, to the charge pump conversion module 12 and the buck modulus of conversion Block 13 sends the first control signal；And when the voltage of the battery module 14 is not more than the predeterminated voltage, or work as The voltage of the battery module 14 is more than the predeterminated voltage and the electric current of the battery module 14 is not more than the predetermined current When, send the second control signal to the charge pump conversion module 12 and the buck conversion module 13.

Wherein, it should be noted that the predeterminated voltage and the predetermined current can flexibly be set according to actual conditions It sets, such as may be configured as 3.5V and 3A, as long as disclosure satisfy that actual demand, this is not repeated.

Further, the charge pump conversion module 12 may include the charge pump transform subblock of one or more parallel connections (as shown in Figure 1 121)；For any charge pump transform subblock in the charge pump conversion module 12 (such as institute in Fig. 1 121 stated), what the charge pump transform subblock (as shown in Figure 1 121) can be used for being sent according to the control module 11 Drive signal adjusts the switching device in the charge pump transform subblock (as shown in Figure 1 121), so that with described The power supply adaptor of charging circuit connection can be by the charge pump transform subblock (as shown in Figure 1 121) to described Battery module 14 charges；

The buck conversion module 13 may include the buck transform subblock of one or more parallel connections (such as institute in Fig. 1 131 stated)；For any buck transform subblock (as shown in Figure 1 131) in the buck conversion module 13, The drive signal that the buck transform subblock (as shown in Figure 1 131) can be used for being sent according to the control module 13, The switching device in the buck transform subblock (as shown in Figure 1 131) is adjusted, so that connecting with the charging circuit Logical power supply adaptor can be by the buck transform subblock (as shown in Figure 1 131) to the battery module 14 Charging.

Further, the charge pump transform subblock (as shown in Figure 1 121), if can be specifically used for receiving institute The first drive signal for stating the transmission of control module 11 is then opened in the charge pump transform subblock (as shown in Figure 1 121) First group of switch, close second group of switch in the charge pump transform subblock (as shown in Figure 1 121) so that The power supply adaptor can in the charge pump transform subblock (as shown in Figure 1 121) capacitance and the electricity Pond module 14 charges；And if receiving the second drive signal of the transmission of the control module 11, closes the charge pump and turn First group of switch in submodule (as shown in Figure 1 121) is changed, it is (as shown in Figure 1 to open the charge pump transform subblock 121) in second group of switch the capacitance so that the charge pump transform subblock in (as shown in Figure 1 121) It can charge to the battery module 14.

Wherein, it should be noted that first drive signal and second drive signal can be according to practical need Flexible setting is asked, such as may be configured as high level or low level, as long as the charge pump varitron electricity can be efficiently controlled Switching device in road (as shown in Figure 1 121) and the buck converter sub-circuit (as shown in Figure 1 131) is Can, this is not also repeated.

Specifically, as shown in Fig. 2, it is the concrete structure schematic diagram of the charging circuit described in the embodiment of the present invention.It needs It is noted that (as shown in Figure 2 with corresponding adapter in order to clearly demonstrate the charging circuit described in the embodiment of the present invention Adaptation module 16) specific connection type, also specifically depict corresponding power supply adaptor in the figure.

Furthermore, it should be noted that the control module 11, the charge pump conversion module 12, buck conversion Module 13 and the battery module may be provided in corresponding terminal, and can pass through corresponding cable and the adaptation module 16 are connected；Alternatively, the control module 11 can also be provided in the adaptation module 16, i.e., it is integrated in accordingly as integrating device Power supply adaptor in.Certainly, the control device 11 can not also appoint this independently of the terminal and the adapter What is limited.

Specifically, as shown in Fig. 2, the charge pump transform subblock (first group of switch in 121) as shown in Figure 2 It may include first switch (Q1 as shown in Figure 2) and second switch (Q2 as shown in Figure 2)；Charge pump conversion (second group of switch in 121) as shown in Figure 2 includes third switch (Q3 as shown in Figure 2) and the 4th switch to module (Q4 as shown in Figure 2)；(capacitance in 121) as shown in Figure 2 includes the first capacitance to the charge pump transform subblock (C1 as shown in Figure 2) and the second capacitance (C2 as shown in Figure 2), wherein：

The control terminal of the first switch (Q1 as shown in Figure 2) is connected to the output end of the control module 11, defeated Enter end to be connected to the output end of the control module 11, the input of output end and third switch (Q3 as shown in Figure 2) The connection of the first end of end and first capacitance (C1 as shown in Figure 2)；

The control terminal of the second switch (Q2 as shown in Figure 2) is connected to the output end of the control module 11, defeated Enter the second end at end and first capacitance (C1 as shown in Figure 2) and the 4th switch (Q4 as shown in Figure 2) Input terminal connection, the first end of output end and second capacitance (C2 as shown in Figure 2), the battery module 14 the The connection of the output end of one end and third switch (Q3 as shown in Figure 2)；

The control terminal of the third switch (Q3 as shown in Figure 2) is connected to the output end of the control module 11；

The control terminal of 4th switch (Q4 as shown in Figure 2) is connected to the output end of the control module 11, defeated Outlet is connected to the second end of the second end of second capacitance (C2 as shown in Figure 2) and the battery module 14.

(high current is used it should be noted that being connected to the charge pump conversion module 12 in the power supply adaptor Charging) when, the control module 11 can send described first according to certain period (can flexibly being set according to actual conditions) and drive Dynamic signal and second drive signal such as send the first driving in the first stage (in preceding T/2) of a cycle (such as in T) Signal sends second drive signal etc. in the second stage (rear T/2) of a cycle.

As shown in the above, (big electricity is used when the power supply adaptor is connected to the charge pump conversion module 12 Current charge) when, each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) is receiving the of the transmission of control module 11 When one drive signal, first group of switch in each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) can be opened (such as Q1 and Q2), close in each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) second group of switch (such as Q3 with And Q4) so that the power supply adaptor can be into each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) One capacitance (C1 as shown in Figure 2), the second capacitance (C2 as shown in Figure 2) and the battery module 14 charge, and need Illustrate, the concretely described power supply adaptor to charge at this time to battery module 14；Receiving the control module 11 When the second drive signal issued, second in each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) can be opened Group switch (such as Q3 and Q4), first group closed in each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) are opened It closes (such as Q1 and Q2) so that the first capacitance in each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) is (as schemed C1 shown in 2) and the second capacitance (C2 as shown in Figure 2) can charge to the battery module 13, need to illustrate It is, in the concretely each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) charged at this time to battery module 14 The second capacitance (C2 as shown in Figure 2).Compared with the prior art, in embodiments of the present invention, large current charge is being needed When, it uses charge pump conversion module and charges, since the charge/discharge element used in charge pump conversion module is capacitance (i.e. C1 and C2) rather than inductance the problem of because without coil loss, core loss and fever, and then can be realized Real large current charge, you can effectively accelerate charging rate, reduce the charging time, improve charge efficiency, while can also The usage experience for avoiding fever phenomenon, improving user, thus when carrying out the charging of terminal etc., decompression can not only be promoted and turned Change efficiency, moreover it is possible to reduce the fever of terminal etc..To solve existing for existing charging circuit be depressured transfer efficiency compared with Problem low and that fever is more serious.

It should be noted that (as shown in Figure 2 by the first switch (Q1 as shown in Figure 2), second switch Q2), third switch (Q3 as shown in Figure 2), the 4th switch (Q4 as shown in Figure 2), the first capacitance are (as shown in Figure 2 C1) and the circuit structure that is formed of the second capacitance (C2 as shown in Figure 2) may be commonly referred to as Charge Pump Converter (charge pump transformation) circuit, therefore, the charge pump conversion module described in the embodiment of the present invention is specifically referred to alternatively as Charging circuit (being subsequently still referred to as charge pump conversion module) based on Charge Pump Converter circuits.

That is, the charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) can by four switching devices, Two capacitances are constituted.By controlling opening and turning off for each switching device, to realize the first capacitance and the second capacitance (i.e. C1, C2) series connection and parallel connection, to realize decompression.That is, in the embodiment of the present invention, it is mainly based upon Charge Pump Converter circuits charge to battery module 14, defeated due to theoretically Charge Pump Converter circuits Going out voltage (i.e. input voltage/charging voltage of battery module 14), there are following relationships between input voltage：Vin=2Vout/ η, due to η usually higher (usually can be higher than 98%), thus the output voltage of Charge Pump Converter circuits and input Relationship between voltage can also be reduced to Vin=2*Vout.Again since Charge Pump Converter circuits mainly may be used Switched by capacitance and realize that decompression conversion, inside do not have inductance component, because of the energy loss without inductance, if choosing Suitable parameter is selected, also may make the more efficient of entire charging circuit, and then can realize the charging of high current.It needs to illustrate Be, if you need to the charging current of bigger, can also multiple Charge Pump Converter circuits in parallel, this is not repeated.

Similarly, the buck transform subblock (as shown in Figure 1 131), if can be specifically used for receiving described The third drive signal that control module 11 is sent then is opened in the buck transform subblock (as shown in Figure 1 131) First group of switch closes second group of switch in the buck transform subblock (as shown in Figure 1 131), so that institute State power supply adaptor can in the buck transform subblock (as shown in Figure 1 131) capacitance and the battery Module 14 charges；And if receiving the fourth drive signal of the transmission of the control module 11, the buck conversion is closed It is (as shown in Figure 1 to open the buck transform subblock for first group of switch in submodule (as shown in Figure 1 131) 131) second group of switch in, so that the capacitance energy in the buck transform subblock (as shown in Figure 1 131) It is enough to charge to the battery module 14.

Specifically, as shown in Fig. 2, in the buck transform subblock (as illustrated in fig. 1 or fig. 2 131) first Group switch includes the 5th switch (Q5 as shown in Figure 2)；The buck transform subblock is (as illustrated in fig. 1 or fig. 2 131) second group of switch in includes the 6th switch (Q6 as shown in Figure 2)；The buck transform subblock (such as Fig. 1 or It is shown in Fig. 2 131) in inductance include the first inductance (L1 as shown in Figure 2)；The buck transform subblock is (such as It is shown in fig. 1 or fig. 2 131) in capacitance include third capacitance (C3 as shown in Figure 2), wherein：

The control terminal of 5th switch (Q5 as shown in Figure 2) is connected to the output end of the control module 11, defeated Enter end to be connected to the second output terminal of the control module 11, output end switchs (Q6 as shown in Figure 2) with the described 6th The first end of input terminal and the first inductance L1 are connected to；

The control terminal of 6th switch (Q6 as shown in Figure 2) is connected to the output end of the control module 11, defeated Outlet is connected to the second end of the second end of the third capacitance (C3 as shown in Figure 2) and the battery module 14；

The second end of first inductance (L1 as shown in Figure 2) and the third capacitance (C3 as shown in Figure 2) First end and the battery module 14 first end connection.

It should be noted that when the power supply adaptor is connected to the buck conversion module 13, the control mould Block 11 can send the third according to certain period (can flexibly being set according to actual conditions f) and control signal and the described 4th Signal is controlled, such as first control signal is sent in the first stage (in preceding T/2) of a cycle (in figure T), in a cycle Second stage (rear T/2) sends the 4th control signal etc., and the embodiment of the present invention is not limited in any way this.

As shown in the above, (small electricity is used when the power supply adaptor is connected to the buck conversion module 12 Current charge) when, each buck transform subblock (as illustrated in fig. 1 or fig. 2 131) is receiving the of the transmission of control module 11 When three drive signals (actually can be identical as first drive signal), each buck transform subblock (such as Fig. 1 or figure can be opened Shown in 2 131) in first group of switch (such as Q5), close each buck transform subblock (as illustrated in fig. 1 or fig. 2 131) second group of switch (such as Q6) in so that the power supply adaptor can be to each buck transform subblock (such as Fig. 1 or figure Shown in 2 131) in the first inductance (L1 as shown in Figure 2), third capacitance (C3 as shown in Figure 2) and described Battery module 14 charges, it should be noted that the concretely described power supply adaptor to charge at this time to battery module 14；It is connecing When receiving fourth drive signal (actually can be identical as second drive signal) that the control module 11 issues, it can open each Second group of switch (such as Q6) in buck transform subblock (as illustrated in fig. 1 or fig. 2 131) closes each buck conversion First group of switch (such as Q5) in submodule (as illustrated in fig. 1 or fig. 2 131) so that each buck transform subblock is (as schemed 1 or shown in Fig. 2 131) in the first inductance (L1 as shown in Figure 2) and third capacitance (C3 as shown in Figure 2) It can charge to the battery module 13, it should be noted that the concretely each buck to charge at this time to battery module 14 The first inductance (L1 as shown in Figure 2) in transform subblock and third capacitance (C3 as shown in Figure 2).Compared to existing There is technology, in embodiments of the present invention, when needing low current charge, uses buck conversion module and charge, due to The fixed voltage received can be converted to the voltage of arbitrary size by buck conversion module, to improve the flexible of charging Property.

Further more, switching (Q5 as shown in Figure 2), the 6th switch (Q6 as shown in Figure 2), the first electricity by the described 5th The circuit structure that sense (L1 as shown in Figure 2) and third capacitance (C3 as shown in Figure 2) are formed can be existing Buck Switch Charger circuits, therefore, the buck conversion module described in the embodiment of the present invention is specifically referred to alternatively as base In the charging circuit (being subsequently still referred to as buck conversion module) of Buck Switch Charger circuits, this is not repeated.

Further, the first switch (Q1 as shown in Figure 2), second switch (Q2 as shown in Figure 2), third Switch (Q3 as shown in Figure 2), the 4th switch (Q4 as shown in Figure 2), the 5th switch (Q5 as shown in Figure 2) and 5th switch (Q6 as shown in Figure 2) at least may include the switch element of one or more parallel connections.This is just effectively reduced The conducting resistance of switch element, increases the electric current in the charging circuit, accelerate the charging circuit charging rate, The charge efficiency for reducing the charging time of the charging circuit, improving the charging circuit, the embodiment of the present invention to this not It repeats.

Preferably, the switch element of one or more of parallel connections can be transistor.

Optionally, the transistor may include triode or field-effect tube.

It should be noted that if switch be triode, then the control terminal switched can be triode base stage, switch it is defeated Enter the collector (or emitter) that end can be triode, the output end of switch can be emitter (or the current collection of triode Pole)；If switch is field-effect tube, the control terminal switched can be the grid of field-effect tube, and the input terminal of switch can be field The output end of the drain electrode (or source electrode) of effect pipe, switch can be the source electrode (or drain electrode) of field-effect tube.Certainly, the input of switch End and output end can also be intercoursed, and the embodiment of the present invention is not limited in any way this.

Still optionally further, the triode may include that NPN type triode, PNP type triode, the field-effect tube can wrap N-channel type field-effect tube and P-channel type field-effect tube etc. are included, the embodiment of the present invention is not also limited in any way this.

In addition, it is necessary to explanation, the first switch, second switch, third switch, the 4th switch, the 5th switch with And the 6th switch can also be any switch element that can realize switching function, such as any single-pole double-throw switch (SPDT), the present invention reality Example is applied not to be limited in any way this.

It should be noted that first capacitance (C1 as shown in Figure 2), second capacitance are (as shown in Figure 2 C2) and the third capacitance (C3 as shown in Figure 2) at least may include one or more capacity cells in parallel.Its In, the capacity cell of multiple parallel connections can effectively reduce the ESR of the first capacitance, the second capacitance and third capacitance (Equivalent Series Resistance, equivalent series resistance), so as to effectively increase in the charging circuit Electric current, the charging rate for accelerating the charging circuit, improve the charging circuit at the charging time for reducing the charging circuit Charge efficiency, the embodiment of the present invention also do not repeat this.

Further, as shown in Fig. 2, the charging circuit may also include and the control module 11, the charge pump turn The compensating module 15 that mold changing block 12 and the buck conversion module 13 are connected to：

The compensating module 15 can be used in each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) When first group of switch is opened, second group of switch is closed, into each charge pump transform subblock (as illustrated in fig. 1 or fig. 2 121) Capacitance and the battery module 14 carry out current compensation；Alternatively, in each buck transform subblock (institute in such as Fig. 1 or Fig. 2 131 shown) in first group of switch open, when second group of switch is closed, to each buck transform subblock (in such as Fig. 1 or Fig. 2 Shown in 131) in capacitance, inductance and the battery module 14 carry out current compensation.

Specifically, the compensating module 15 may include the 4th capacitance (C4 as shown in Figure 2) and the 5th capacitance (as schemed C5 shown in 2), wherein：

The first end of 4th capacitance (C4 as shown in Figure 2) and the output end of the control module 11 and described The input terminal of first switch (Q1 as shown in Figure 2) is connected to, second end and second capacitance (C2 as shown in Figure 2) The second end connection of second end, the output end of the 4th switch (Q4 as shown in Figure 2) and the battery module 14；

The first end of 5th capacitance (C5 as shown in Figure 2) and the second output terminal of the control module 11 and The input terminal connection of 5th switch (Q5 as shown in Figure 2), second end switch (as shown in Figure 2 with the described 6th Q6 the second end of output end, the third capacitance (C3 as shown in Figure 2)) and the second end of the battery module 14 connect It is logical.

It should be noted that in order to further decrease the 4th capacitance (C4 as shown in Figure 2) and the 5th capacitance The ESR of (C5 as shown in Figure 2) reduces the charging time, improves charge efficiency, the 4th capacitance and the 5th capacitance are at least The capacity cell that may include one or more parallel connections, does not also repeat this.

In the following, being carried out to the operation principle of the charging circuit described in the embodiment of the present invention one with flow chart shown in Fig. 3 It introduces in detail：

Specifically, it as shown in Fig. 2, after charge cable is inserted into portable equipment, can usually follow the steps below portable The charging of equipment：

S1, judge whether the output voltage of charger is in under-voltage condition.

That is, it is judged that whether the output voltage (i.e. Vbus) of the charger is more than the first default brownout threshold (i.e. Vbus_ UVLO)。

S2, charging flow is exited.

It should be noted that if determining that the output voltage of the charger is not more than the first default brownout threshold, then illustrate The output voltage of the charger is not more than the minimum value of the required input voltage of the battery, thus can directly exit charging Flow.

S3, judge whether the output voltage of charger is in overvoltage condition.

When the output voltage for determining the charger is more than the first default brownout threshold, the charging can be further judged Whether the output voltage of device is less than the first preset overpressure threshold value (i.e. VBUS_OVP).It should be noted that if determining the charging The output voltage of device is not less than the first preset overpressure threshold value, then illustrates that the output voltage of the charger is not less than the battery institute The maximum value of the input voltage needed, thus can directly exit charging flow；If it is determined that the output voltage of the charger is less than First preset overpressure threshold value then illustrates that the output voltage of the charger is less than the maximum of the required input voltage of the battery Value, thus next step can be carried out.

S4, judge whether battery damages.

It should be noted that existing judgment mode, which can be used, judges whether the battery damages, as that can pass through detection institute Whether the potential difference for stating battery both ends is that just etc., the embodiment of the present invention is not limited in any way this.

S5, determine whether dedicated charger.

It should be noted that usually can determine that the charger is by the correspondence between the battery and charger No is dedicated charger, and the charger as described in can be determined by producer, version number of the portable equipment where the battery etc. is No is dedicated charger.

S6, it is charged to battery using Buck Switch Charger circuits.

If it is determined that the charger is non-dedicated charger, then it can pass through existing Buck Switch Charger circuits Charge to the battery, that is, using existing charging circuit to battery charge, to ensure that charging safety and Compatibility.

S7, detection charging circuit impedance simultaneously preserve information.

It should be noted that the output current Ibus and output voltage Vbus of the charger can be acquired first, and count Impedance Rs=(U0-U1)/Ibus of charging circuit is calculated, and the impedance being calculated can be preserved.In addition, can also root Suitable charging current is determined according to the impedance.

S8, judge whether the charging voltage of battery is in under-voltage condition.

That is, it is judged that whether the charging voltage (i.e. Vbat) of the battery is more than the second default brownout threshold (i.e. Vbat_ LOW)。

S9, judge whether the charging voltage of battery is in overvoltage condition.

When the charging voltage for determining the battery is more than the second default brownout threshold, the battery can be further judged Whether charging voltage is less than the second preset overpressure threshold value (i.e. Vbat_RFG).It should be noted that if determining filling for the battery Piezoelectric voltage is not less than the second preset overpressure threshold value, then can directly exit charging flow；If it is determined that the charging voltage of the battery is small In the second preset overpressure threshold value, then next step can be carried out.

S10, it is charged to battery using Charge Pump Converter circuits.

That is, however, it is determined that the charger is dedicated charger, and the charging voltage of the battery is in normal shape State can then be charged by Charge Pump Converter circuits to battery.Due to the charging electricity described in the embodiment of the present invention The charge/discharge element used in road is capacitance rather than inductance, because of asking without coil loss, core loss and fever Topic, and then can realize real large current charge, you can effectively accelerate charging rate, reduces the charging time, improves charging Efficiency, while the usage experience that fever phenomenon can also be avoided, improve user.

Whether S11, detection charging current are less than predetermined current threshold.

It should be noted that if determining that the charging current of the battery is not less than predetermined current threshold (i.e. Ibat_T), then Still Charge Pump Converter circuits can be used to charge to battery；It is preset if it is determined that the charging current of the battery is less than Current threshold can then continue to execute step S6.

That is, when being charged to the battery by Charge Pump Converter circuits, the battery Charging current can also gradually reduce, at this point, may also turn off the Charge Pump Converter circuits, and by described Buck Switch Charger circuits charge to battery.Hereby it is ensured that safety and the compatibility of charging.

S12, charging complete is detected whether.

It can determine whether the charging current of the battery is more than the cut-off current (Ibat_TERM) of the battery, with determination Charging flow.

If it is determined that the charging current of the battery reaches the cut-off current of the battery, you can determine charging complete；If really The charging current of the fixed battery is not up to the cut-off current of the battery, you can determines charging unfinished, thus can continue to lead to It crosses the Buck Switch Charger circuits to charge to the battery, until charging complete.

Wherein, it should be noted that the first default brownout threshold, the first preset overpressure threshold value, second default under-voltage Threshold value, the second preset overpressure threshold value, predetermined current threshold and cut-off current can be flexibly arranged according to actual conditions, not to this It repeats.

It can be seen from the above content that when charging to terminal device (such as mobile phone, tablet computer), however, it is determined that use is filled The voltage of electric appliance output is in normal condition, and the charger does not damage.If it is determined that the charger is dedicated charger, The charging stage of the battery is then determined according to the current state of the battery of the terminal device first.

Specifically, however, it is determined that the charging stage of the battery is the first sub-stage (CV stages in CC stages or CV stages Described in battery charging current be not less than predetermined current threshold stage), can be used can with large current charge, it is efficient with And the small Charge Pump Converter circuits that generate heat charge；If it is determined that the charging stage of the battery is trickle rank (charging current of battery described in the CV stages is more than cut-off current and small for section, charging stage and second sub-stage in CV stages In the stage of predetermined current threshold), can be used can be with low current charge, safety and the higher Buck of compatibility Switch Charger circuits charge；If it is determined that the charging stage of the battery is third sub-stage (the CV ranks in CV stages The charging current of battery described in section is less than the stage of cut-off current), then it represents that charging complete, thus stop charging.

For example, by taking the predeterminated voltage is 3.5V, the predetermined current is 2A, cut-off current is 200mA as an example, it is assumed that institute The current voltage for stating battery is 1.5V, then can be filled first to the battery by Buck Switch Charger circuits Electricity；When the voltage of the battery has been more than 3.5V, then can be carried out to the battery by Charge Pump Converter circuits Charging, until completing the CC stages of charging and the early period in CV stages；When the electric current of the battery tapers into, and is less than 2A, It can then be charged to the battery by Buck Switch Charger circuits；It is small when the electric current of the battery continues to become smaller When 200mA, then charging complete.To in large current charge, improve the high efficiency of charging, reduce fever；In small electricity When current charge, safety and the compatibility of charging ensure that.

Embodiment two：

Second embodiment of the present invention provides a kind of charging systems, as shown in figure 4, it is described in the embodiment of the present invention two The structural schematic diagram of charging system.Specifically, as shown in Figure 4, the charging system may include adaptation module 41 and the present invention Charging circuit described in embodiment；The adaptation module 41 is connected to the control module 11 in the charging circuit, wherein：

The control module 11 can be used for when it is specific adaptation module to determine the adaptation module 41, to the charge It pumps conversion module 12 and the buck conversion module 13 sends first control signal or second control signal；Determining State adaptation module 41 be nonspecific adaptation module when, to the charge pump conversion module 12 and the buck conversion module 13 Send second control signal；The first control signal powers on and the decompression for controlling the charge pump conversion module 12 13 power down of formula conversion module, the second control signal power on and the charge for controlling the buck conversion module 13 Pump 12 power down of conversion module.

That is, in embodiments of the present invention, can determine that the power supply adaptor being connected to the charging circuit is spy When fixed private adapter, charge pump conversion module can be adopted and buck conversion module is filled to the battery of terminal device Electricity；When it is unspecific non-dedicated adapter to determine the power supply adaptor being connected to the charging circuit, buck can be used Conversion module charges to the battery of terminal device.So as to ensure in private adapter, high current can be preferentially used It charges, not only improves buck transfer efficiency, also reduce charging fever；In non-dedicated adapter, can directly adopt It is charged with low current, to ensure that safety and the compatibility of charging.

Further, the control module 11, be particularly used in determine the adaptation module 41 be specific adaptation module, And the voltage of the battery module 14 is when being more than the electric current of predeterminated voltage and the battery module 14 and being more than predetermined current, to institute It states charge pump conversion module 12 and the buck conversion module 13 sends the first control signal；And determining It states adaptation module 41 and is not more than the predeterminated voltage for the voltage of specific adaptation module and the battery module 14, or work as institute The voltage for stating battery module 14 is more than the predeterminated voltage and the electric current of the battery module 14 is not more than the predetermined current When, send the second control signal to the charge pump conversion module 12 and the buck conversion module 13.

As shown in the above, the charging system described in the embodiment of the present invention two, when the adapter used is special , can be according to the voltage and electric current of battery module when adapter, further selection uses charge pump conversion module or buck Conversion module charges to terminal, to not only improve decompression transfer efficiency and charging rate, also reduces fever, Improve compatibility and safety.

In the following, the operation principle of the charging system described in the embodiment of the present invention two is introduced in citing in detail：

For example, it is assumed that the charging system that the embodiment of the present invention proposes may include adapter (charger as shown in Figure 5) And the charging circuit, as shown in figure 5, its concrete structure signal for the charging system described in the embodiment of the present invention two Figure.Specifically, as shown in Figure 5, the charging system may include：Charger 51, cable 52, portable equipment 53.

Wherein, the charger 51 be commonly divided into the dedicated charger that can export larger current and can export compared with The non-dedicated charger of low current；The cable 52 may generally be USB (Universal Serial Bus, universal serial bus) Cable；The portable equipment 53 generally can be the terminal devices such as mobile phone, tablet computer, and, usually may be used in the portable equipment 53 Including OVP (Over Voltage Protection, overvoltage protection) unit 531, Charge Pump Converter (i.e. charges Pump conversion) unit 532, Buck Switch Charger (i.e. buck conversion) unit 533, AP (Application Processor, application processor) unit 534, communication protocol unit 535 and electrification gauge battery unit 536.Wherein, described OVP (Over Voltage Protection, overvoltage protection) unit 531, (Application Processor, are answered the AP With processor) unit 534 and the communication protocol unit 535 can also referred to as control device, and the control device Other than it can be the integrating device in the portable device, it can also be integrally disposed in the charger.Certainly, the control Device processed can also be the self-contained unit of the independent and portable device and charger.

As shown in the above, in the embodiment of the present invention two, when the charger used be dedicated charger, then can be used Charge Pump Converter units charge to the battery unit, to which charge efficiency can be improved, reduce fever； When the charger used be non-dedicated charger, then can be used Buck Switch Charger units to the battery unit into Row charging, to which safety and the compatibility of charging can be improved.

It should be noted that the Charge Pump Converter units 532 and the Buck Switch The concrete structure of Charger units 533 can be as previously mentioned, details are not described herein again.

Second embodiment of the present invention provides a kind of charging systems, it may include institute in adaptation module and the embodiment of the present invention one The charging circuit stated can be adopted when it is specific private adapter to determine the power supply adaptor being connected to the charging circuit Charge pump conversion module and buck conversion module charge to the battery of terminal device；It is determining and the charging circuit When the power supply adaptor of connection is unspecific non-dedicated adapter, battery of the buck conversion module to terminal device can be used It charges.So as to ensure, in private adapter, to charge using high current, buck conversion effect can be improved Rate, can not only save the charging time at charge efficiency, can also reduce charging fever；In non-dedicated adapter, small electricity can be used Stream charges, to ensure that safety and the compatibility of charging.Compared with the prior art, using dedicated charger When (may actually be the CC stages of dedicated charger and first sub-stage in CV stages) charges, charging effect can not only be promoted Rate, moreover it is possible to reduce charging fever, non-dedicated charger charging stage and special (may actually be using non-dedicated charger Tricke phase stage, charging stage, second sub-stage in CV stages of charger) charging when, can not only be promoted charging safety, moreover it is possible to Ensure charging compatibility.To solve, decompression transfer efficiency is relatively low existing for existing charging circuit and fever is more serious Problem.In addition, it is necessary to explanation, in practical applications, the Charge Pump Converter circuits in the charging circuit And ready-made chip also can be used (in the chip also other than it can voluntarily build in Buck Switch Charger circuits May include corresponding control logic, to control the conducting and cut-off of each switch element in chip), at this time, it is only necessary in chip Corresponding element is connected on pin, the embodiment of the present invention is not limited in any way this.

Embodiment three：

The embodiment of the present invention three provides a kind of charging method, as shown in fig. 6, it is described in the embodiment of the present invention three The flow diagram of charging method.Specifically, it will be appreciated from fig. 6 that the charging method may include following steps：

Step 601：Detect the voltage and electric current of battery module；

Step 602：According to the voltage and the electric current, sent out to charge pump conversion module and buck conversion module Go out to control signal, to switch the power-up state of the charge pump conversion module and the buck conversion module；The control Signal include control the charge pump conversion module power on and the buck conversion module power down first control letter Number, and, to control, the buck conversion module powers on and the second control of the charge pump conversion module power down is believed Number.

Further, when the electric current that the voltage of the battery module is more than predeterminated voltage and the battery module is more than in advance If when electric current, the first control signal is sent to the charge pump conversion module and the buck conversion module；

When the voltage of the battery module is not more than the predeterminated voltage, or when the voltage value of the battery module is more than The electric current of the predeterminated voltage and the battery module be not more than the predetermined current when, to the charge pump conversion module with And the buck conversion module sends the second control signal.

Specifically, the charge pump conversion module includes one or more charge pump transform subblocks in parallel, Mei Yi electricity Lotus pump transform subblock includes first switch, second switch, third switch, the 4th switch, the first capacitance and the second capacitance：Institute State the input terminal of first switch with and the output end of power supply adaptor that is connected of the terminal be connected to, output end and the third The first end of the input terminal of switch and first capacitance is connected to；The input terminal of the second switch and first capacitance The input terminal connection of second end and the 4th switch, first end, the third of output end and second capacitance switch Output end and the cell communication；The output end of 4th switch is connected to the second end of second capacitance；

After sending the first control signal to the charge pump conversion module and the buck conversion module, The charging method further includes：

Within the first setting period, sent to the charge pump conversion module to open the first switch and described Second switch closes the first drive signal of the third switch and the 4th switch, so that the power supply adaptor It can charge to first capacitance, second capacitance and the battery；

Within the second setting period, sent to the charge pump conversion module to open third switch and described 4th switch, close the second drive signal of the first switch and the second switch so that first capacitance with And second capacitance can charge to the battery.

Further, before the voltage and electric current of detection battery module, the charging method further includes：

Determine that the power supply adaptor is the special adapter with the terminal coupling.

Further, the charging method may also include：

It is closed in the first switch and second switch unlatching, third switch and the 4th switch When, by being connected in parallel on the 4th capacitance at the power supply adaptor both ends, to first capacitance, second capacitance and described Battery carries out current compensation；Alternatively,

When the 5th switch is opened, the 6th switch is closed, by being connected in parallel on the power supply adaptor both ends 4th capacitance carries out current compensation to first inductance, the third capacitance and the battery.

Further, determining that the power supply adaptor being connected to the terminal is the special adapter with the terminal coupling Later, the charging method further includes：

The information about power of the battery module is acquired in real time, and charge information is generated according to the information about power, and, it will The charge information feeds back to the power supply adaptor, to be exported extremely according to charge information adjustment by the power supply adaptor The voltage and electric current of the charge pump conversion module.

Second embodiment of the present invention provides a kind of charging methods, can first determine whether power supply adaptor and whether mutual of battery Match, and if it is determined that the power supply adaptor matches with the battery, then can be filled to the battery by charge pump conversion module Electricity, however, it is determined that the power supply adaptor is mismatched with the battery, then can be charged to the battery by the second charging circuit.Phase Than that can make (such as in the CC stages of dedicated charger and the early period in CV stages) when using large current charge in the prior art The charge pump conversion module for being depressured transfer efficiency with having height, thus charge efficiency can not only be promoted, moreover it is possible to reduce charging hair Heat；(such as tricke phase stage, the preliminary filling rank using non-dedicated charger and dedicated charger when using low current charge charging Section, the later stage in CV stages), the buck conversion module for having high security can be used, to which charging safety can not only be promoted, Also ensure charging compatibility.To solve, decompression transfer efficiency is relatively low existing for existing charging circuit and fever is tighter The problem of weight.

Example IV：

Based on inventive concept identical with the embodiment of the present invention three, the embodiment of the present invention four provides a kind of terminal, such as Fig. 7 It is shown, it is the structural schematic diagram of the terminal described in the embodiment of the present invention four.Specifically, as shown in Figure 7, the terminal can wrap It includes：

Detection unit 71 can be used for detecting the voltage and electric current of battery module；

Control unit 72 can be used for according to the voltage and the electric current, to charge pump conversion module and buck Conversion module sends out control signal, and shape is powered on switch the charge pump conversion module and the buck conversion module State；The control signal includes controlling the charge pump conversion module to power on and the buck conversion module power down First control signal, and, it is powered on and the charge pump conversion module power down to control the buck conversion module Second control signal.

Specifically, described control unit 72 can be specifically used for being more than predeterminated voltage and institute when the voltage of the battery module When stating the electric current of battery module more than predetermined current, sent to the charge pump conversion module and the buck conversion module The first control signal；And when the battery module voltage be not more than the predeterminated voltage, or work as the battery mould When the voltage value of block is more than the electric current of the predeterminated voltage and the battery module no more than the predetermined current, to the electricity Lotus pumps conversion module and the buck conversion module sends the second control signal.

Further, the charge pump conversion module may include the charge pump transform subblock of one or more parallel connections, often One charge pump transform subblock includes first switch, second switch, third switch, the 4th switch, the first capacitance and the second electricity Hold：The input terminal of the first switch with and the output end of power supply adaptor that is connected of the terminal be connected to, output end and institute State the first end connection of the input terminal and first capacitance of third switch；The input terminal of the second switch and described first The input terminal connection of the second end of capacitance and the 4th switch, the first end of output end and second capacitance, described the The output end and the cell communication of three switches；The second end of the output end and second capacitance of 4th switch connects It is logical；

Described control unit 72 can be specifically used for the charge pump conversion module and the buck conversion module After sending the first control signal, within the first setting period, sent to the charge pump conversion module to open First switch and the second switch are stated, the first drive signal of the third switch and the 4th switch is closed, with The power supply adaptor is charged to first capacitance, second capacitance and the battery；And second It sets in the period, is sent to the charge pump conversion module to open the third switch and the 4th switch, closed Second drive signal of the first switch and the second switch, so that first capacitance and the second capacitance can It charges to the battery.

Further, the terminal may also include determining that unit 73：

The determination unit 73 can be used for before the voltage and electric current of detection battery module, determine that the power supply is suitable Orchestration is the special adapter with the terminal coupling.

Further, the terminal may also include compensating unit 74：

The compensating unit 74, for being opened in the first switch and the second switch, third switch with And it is described 4th switch close when, by being connected in parallel on the 4th capacitance at the power supply adaptor both ends, to first capacitance, institute It states the second capacitance and the battery carries out current compensation；Alternatively, the 5th switch is opened, the 6th switch is closed When, by being connected in parallel on the 4th capacitance at the power supply adaptor both ends, to first inductance, the third capacitance and The battery carries out current compensation.

Specifically, the terminal may also include feedback unit 75：

The feedback unit 75, can be used for determine the power supply adaptor that is connected to the terminal for and the terminal coupling Special adapter after, acquire the information about power of the battery module in real time, and charging letter is generated according to the information about power Breath, and, the charge information is fed back into the power supply adaptor, with by the power supply adaptor according to the charge information Adjustment is exported to the voltage and electric current of the charge pump conversion module.

The embodiment of the present invention four provides a kind of terminal, it may include the inspection of voltage and electric current for detecting battery module Unit is surveyed, and for according to the voltage and the electric current, being sent out to charge pump conversion module and buck conversion module Go out to control signal, to switch the power-up state of the charge pump conversion module and the buck conversion module；The control Signal include control the charge pump conversion module power on and the buck conversion module power down first control letter Number, and, to control, the buck conversion module powers on and the second control of the charge pump conversion module power down is believed Number control unit.Compared with the prior art, in embodiments of the present invention, as a result of with height decompression transfer efficiency and The charge pump conversion module of the characteristics such as few fever, thus when carrying out the charging of terminal etc., decompression conversion effect can not only be promoted Rate efficiency, moreover it is possible to reduce the fever of terminal etc..To solve existing for existing charging circuit be depressured transfer efficiency it is relatively low with And the problem that fever is more serious.

It will be understood by those skilled in the art that the embodiment of the present invention can be provided as method, apparatus (equipment) or computer journey Sequence product.Therefore, complete hardware embodiment, complete software embodiment or combining software and hardware aspects can be used in the present invention The form of embodiment.Moreover, the present invention can be used in one or more wherein include computer usable program code calculating The computer program implemented in machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of product.

The present invention be with reference to according to the method for the embodiment of the present invention, the flow chart of device (equipment) and computer program product And/or block diagram describes.It should be understood that each flow in flowchart and/or the block diagram can be realized by computer program instructions And/or the combination of the flow and/or box in box and flowchart and/or the block diagram.These computer programs can be provided to refer to Enable the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate One machine so that by the instruction that computer or the processor of other programmable data processing devices execute generate for realizing The device for the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes.

These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of charging circuit, which is characterized in that including control module, charge pump conversion module, buck conversion module and Battery module, wherein the control module is connected to the charge pump conversion module and the buck conversion module respectively； The charge pump conversion module and the buck conversion module are connected to the battery module；The charge pump modulus of conversion Block includes two or more charge pump transform subblocks in parallel；

The control module, the electric current for being more than predeterminated voltage and the battery module when the voltage of the battery module are big When predetermined current, first control signal is sent to the charge pump conversion module and the buck conversion module；And When the battery module voltage be not more than the predeterminated voltage, or when the battery module voltage be more than the default electricity When the electric current of pressure and the battery module is not more than the predetermined current, to the charge pump conversion module and the decompression Formula conversion module sends second control signal；

Wherein, the first control signal powers on controlling the charge pump conversion module and the buck conversion module Power down, and, the second control signal powers on controlling the buck conversion module and the charge pump modulus of conversion Block power down.

2. charging circuit as described in claim 1, which is characterized in that

For the charge pump modulus of conversion any charge pump transform subblock in the block, the charge pump transform subblock is used for root According to the drive signal that the control module is sent, the switching device in the charge pump transform subblock is adjusted, so that with institute The power supply adaptor for stating charging circuit connection can be by the charge pump transform subblock to the charging battery module；

The buck conversion module includes one or more buck transform subblocks in parallel；It is converted for the buck Mould any buck transform subblock in the block, the drive that the buck transform subblock is used to be sent according to the control module Dynamic signal, adjusts the switching device in the buck transform subblock, so that the power supply being connected to the charging circuit is suitable Orchestration can be by the buck transform subblock to the charging battery module.

3. charging circuit as claimed in claim 2, which is characterized in that

The charge pump transform subblock, if the first drive signal sent specifically for receiving the control module, is opened First group of switch in the charge pump transform subblock is opened, second group of switch in the charge pump transform subblock is closed, So that the power supply adaptor can in the charge pump transform subblock capacitance and the charging battery module；With And if receiving the second drive signal that the control module is sent, close first in the charge pump transform subblock Group switch, opens second group of switch in the charge pump transform subblock, so that in the charge pump transform subblock The capacitance can be to the charging battery module.

4. charging circuit as claimed in claim 3, which is characterized in that first group of switch in the charge pump transform subblock Including first switch and second switch；Second group of switch in the charge pump transform subblock includes third switch and the Four switches；Capacitance in the charge pump transform subblock includes the first capacitance and the second capacitance, wherein：

The control terminal of the first switch is connected to the output end of the control module, the output of input terminal and the control module End connection, output end are connected to the first end of input terminal and first capacitance that the third switchs；

The control terminal of the second switch is connected to the output end of the control module, input terminal and the second of first capacitance The input terminal connection of end and the 4th switch, the first end of output end and second capacitance, the battery module the The output end connection of one end and third switch；

The control terminal of the third switch is connected to the output end of the control module；

The control terminal of 4th switch is connected to the output end of the control module, output end and the second of second capacitance The connection of the second end of end and the battery module.

5. charging circuit as claimed in claim 2, which is characterized in that

The buck transform subblock opens the drop if receiving the third drive signal that the control module is sent First group of switch in pressure type transform subblock closes second group of switch in the buck transform subblock, so that institute Stating power supply adaptor can be to capacitance, inductance and the charging battery module in the buck transform subblock；And If receiving the fourth drive signal that the control module is sent, first group closed in the buck transform subblock is opened It closes, second group of switch in the buck transform subblock is opened, so that described in the buck transform subblock Capacitance and the inductance can be to the charging battery modules.

6. charging circuit as claimed in claim 4, which is characterized in that first group of switch in the buck transform subblock Including the 5th switch；Second group of switch in the buck transform subblock includes the 6th switch；Buck conversion Mould inductance in the block includes the first inductance；Capacitance in the buck transform subblock includes third capacitance, wherein：

The control terminal of 5th switch is connected to the output end of the control module, input terminal and the second of the control module Output end is connected to, and output end is connected to the first end of the input terminal of the 6th switch and first inductance；

The control terminal of 6th switch is connected to the output end of the control module, output end and the second of the third capacitance The connection of the second end of end and the battery module；

The second end of first inductance is connected to the first end of the first end of the third capacitance and the battery module.

7. charging circuit as claimed in claim 6, which is characterized in that the charging circuit further include with the control module, The compensating module that the charge pump conversion module and the buck conversion module are connected to, wherein：

The compensating module, when being closed for first group of switch unlatching in each charge pump transform subblock, second group of switch, Capacitance and the battery module into each charge pump transform subblock carry out current compensation；Alternatively, being converted in each buck When submodule first group of switch in the block is opened, second group of switch is closed, capacitance, inductance into each buck transform subblock with And the battery module carries out current compensation.

8. charging circuit as claimed in claim 7, which is characterized in that the compensating module includes the 4th capacitance and the 5th electricity Hold, wherein：

The first end of 4th capacitance is connected to the input terminal of the output end of the control module and the first switch, the Two ends are connected to the second end of the second end of second capacitance, the output end of the 4th switch and the battery module；

The first end of 5th capacitance is connected to the input terminal of the output end of the control module and the 5th switch, the Two ends are connected to output end, the second end of the third capacitance and the second end of the battery module of the 6th switch.

9. a kind of charging system, which is characterized in that including adaptation module and claim 1-8 any one of them charging electricity Road；The adaptation module is connected to the control module in the charging circuit, wherein：

The control module, for determine the adaptation module be specific adaptation module when, to the charge pump conversion module And the buck conversion module sends first control signal or second control signal；Determining that the adaptation module is non- When specific adaptation module, second control signal is sent to the charge pump conversion module and the buck conversion module；Institute It states first control signal to power on and the buck conversion module power down for controlling the charge pump conversion module, described the Two control signals power on and the charge pump conversion module power down for controlling the buck conversion module.

10. charging system as claimed in claim 9, which is characterized in that

The control module, specifically for determining that the adaptation module is the electricity of specific adaptation module and the battery module When pressure is more than predetermined current more than the electric current of predeterminated voltage and the battery module, to the charge pump conversion module and institute It states buck conversion module and sends the first control signal；And determine the adaptation module be specific adaptation module and The voltage of the battery module is not more than the predeterminated voltage, or when the voltage of the battery module is more than the default electricity When the electric current of pressure and the battery module is not more than the predetermined current, to the charge pump conversion module and the decompression Formula conversion module sends the second control signal.

11. a kind of charging method applied to terminal, which is characterized in that including：

Detect the voltage and electric current of battery module；

When the voltage of the battery module is more than the electric current of predeterminated voltage and the battery module more than predetermined current, to electricity Lotus pumps conversion module and buck conversion module sends first control signal；And when the voltage of the battery module is little In the predeterminated voltage, or when the voltage of the battery module is more than the electric current of the predeterminated voltage and the battery module When no more than the predetermined current, the second control letter is sent to the charge pump conversion module and the buck conversion module Number；The first control signal powers on controlling the charge pump conversion module and the buck conversion module power down, And the second control signal powers on controlling the buck conversion module and the charge pump conversion module falls Electricity；

Wherein, the charge pump conversion module includes two or more charge pump transform subblocks in parallel.

12. charging method as claimed in claim 11, which is characterized in that the charge pump conversion module includes one or more Charge pump transform subblock in parallel, each charge pump transform subblock include first switch, second switch, third switch, the Four switches, the first capacitance and the second capacitance：The input terminal of the first switch with and the power adaptation that is connected of the terminal The output end of device is connected to, and output end is connected to the first end of input terminal and first capacitance that the third switchs；It is described The input terminal of second switch is connected to the input terminal of the second end of first capacitance and the 4th switch, output end and institute State the first end of the second capacitance, the output end of third switch and the cell communication；The output end of 4th switch It is connected to the second end of second capacitance；

It is described after sending the first control signal to the charge pump conversion module and the buck conversion module Charging method further includes：

Within the first setting period, sent to the charge pump conversion module to open the first switch and described second Switch closes the first drive signal of the third switch and the 4th switch, so that the power supply adaptor can It charges to first capacitance, second capacitance and the battery；

Within the second setting period, sent to the charge pump conversion module to open the third switch and the described 4th Switch, closes the second drive signal of the first switch and the second switch, so that first capacitance and the Two capacitances can charge to the battery.

13. charging method as claimed in claim 11, which is characterized in that detection battery module voltage and electric current it Before, the charging method further includes：

Determine that the power supply adaptor being connected to the terminal is the special adapter with the terminal coupling.

14. charging method as claimed in claim 13, which is characterized in that determining the power supply adaptor being connected to the terminal For with after the special adapter of the terminal coupling, the charging method further includes：

The information about power of the battery module is acquired in real time, and charge information is generated according to the information about power, and, it will be described Charge information feeds back to the power supply adaptor, to be exported to described according to charge information adjustment by the power supply adaptor The voltage and electric current of charge pump conversion module.

15. a kind of terminal, which is characterized in that including：

Detection unit, voltage and electric current for detecting battery module；

Control unit, the electric current for being more than predeterminated voltage and the battery module when the voltage of the battery module are more than in advance If when electric current, first control signal is sent to charge pump conversion module and buck conversion module；And when the battery mould The voltage of block is not more than the predeterminated voltage, or when the voltage of the battery module is more than the predeterminated voltage and the electricity When the electric current of pond module is not more than the predetermined current, sent out to the charge pump conversion module and the buck conversion module Send second control signal；The first control signal powers on controlling the charge pump conversion module and the buck turns The first control signal of block power down is changed the mold, and, the second control signal powers on to control the buck conversion module And the charge pump conversion module power down；