CN206759075U - A kind of charging device and mobile terminal - Google Patents
A kind of charging device and mobile terminal Download PDFInfo
- Publication number
- CN206759075U CN206759075U CN201720276666.9U CN201720276666U CN206759075U CN 206759075 U CN206759075 U CN 206759075U CN 201720276666 U CN201720276666 U CN 201720276666U CN 206759075 U CN206759075 U CN 206759075U
- Authority
- CN
- China
- Prior art keywords
- switch
- battery
- bat1
- charging device
- bat2
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model provides a kind of charging device and mobile terminal, wherein, the charging device includes：First switch, second switch, the first battery and the second battery；The first end of first switch is connected with charge power supply, and the second end of first switch is connected with the first battery；The first end of second switch and the second end of first switch are connected, and are connected with the first battery, and the second end of second switch is connected with the second battery；Wherein, the voltage of the first battery is more than the voltage of the second battery, when first switch disconnects, second switch conducting.The charging device and mobile terminal provided by the utility model embodiment, can ensure that battery electric quantity will not be lost in charging process in charging device, and then can reduce the charging interval.
Description
Technical field
Electronic technology field is the utility model is related to, particularly relates to a kind of charging device and mobile terminal.
Background technology
The phenomenon of concentration polarization occurs during lithium cell charging, concentration polarization is due to contained in polar board surface electrolyte
Ion concentration change caused by.In charging, nearby concentration of electrolyte is higher than center for electrode, and this causes battery both ends electric
Pressure is higher than the electromotive force of reality, can now hinder the increase of charging current, slow down the chemical reaction velocity of battery.Therefore, it is
Solves concentration polarization during charging, prior art typically uses pulse charge, and pulse charge is by being superimposed in charging current
Certain frequency, width, the negative pulse of height or the midway of short time stop charging, to reduce the concentration polarization of battery, increase transmission
Speed, and then reduce the charging interval.It is existing, when using the pulse charging manner of superposition negative pulse, the negative arteries and veins of pulse charge
Punching can cause the power loss of battery in itself, and then extend the total duration of charging.
Utility model content
The utility model provides a kind of charging device and mobile terminal, to solve in the prior art using superposition negative pulse
Pulse charge will cause the problem of battery power loss in itself.
On the one hand, the utility model embodiment provides a kind of charging device, including：First switch, second switch, the first electricity
Pond and the second battery；
The first end of first switch is connected with charge power supply, and the second end of first switch is connected with the first battery；
Second end of the first end of second switch and first switch connects, and is connected with the first battery, and the of second switch
Two ends are connected with the second battery；
Wherein, the voltage of the first battery is more than the voltage of the second battery, when first switch disconnects, second switch conducting.
On the other hand, the utility model embodiment also provides a kind of mobile terminal, including above-mentioned charging device.
In the utility model embodiment, charging device has the first battery and the second battery, and the voltage of the first battery is high
In the second battery, disconnected by first switch, second switch conducting, the first battery can be to the second battery discharge, i.e., the first electricity
When pond is in negative pulse, the electricity of the first battery flows into the second battery, so as to ensure that battery electric quantity will not fill in charging device
Electric process is lost in, and then can reduce the charging interval.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, the utility model embodiment will be retouched below
The required accompanying drawing used is briefly described in stating, it should be apparent that, drawings in the following description are only the utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 represents one of circuit theory diagrams of charging device that the utility model embodiment provides；
Fig. 2 represents the two of the circuit theory diagrams for the charging device that the utility model embodiment provides；
Fig. 3 represents that the first battery and the second battery are in the CC charging stages in the charging device that the utility model embodiment provides
Current cycle schematic diagram；
Fig. 4 represents the three of the circuit theory diagrams for the charging device that the utility model embodiment provides.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.
The utility model embodiment provides a kind of charging device, applied to mobile terminal, wherein, the mobile terminal can wrap
Include such as mobile phone, tablet personal computer, laptop computer (Laptop Computer), personal digital assistant (Personal Digital
Assistant, PDA) and wearable device (Wearable Device) etc..
Fig. 1 is referred to, it is illustrated that one of circuit theory diagrams of charging device that the utility model embodiment provides.
The charging device can include：First switch Q1, second switch Q2, the first battery bat1 and the second battery
bat2。
First switch Q1 first end is connected with charge power supply VBAT, first switch Q1 the second end and the first battery bat1
Connection；Second switch Q2 first end is connected with first switch Q1 the second end, and is connected with the first battery bat1, second switch
Q2 the second end is connected with the second battery bat2；
Wherein, the first battery bat1 voltage is more than the second battery bat2 voltage, and when first switch Q1 disconnects, second opens
Close Q2 conductings.
In the embodiment, charging device has two batteries, i.e., including the first battery bat1 and the second battery bat2, is entering
When horizontal pulse is charged, disconnected by first switch Q1, second switch Q2 conductings, because the first battery bat1 voltage is higher than second
Battery bat2 voltage, the first battery bat1 are discharged to the second battery bat2, and the first battery bat1 electricity is flowed into the second electricity
Pond bat2, in such manner, it is possible to ensure that battery electric quantity will not be lost in charging process in charging device.
Fig. 2 is referred to, it is illustrated that the two of the circuit theory diagrams for the charging device that the utility model embodiment provides.
In one embodiment, the charging device, can also include：3rd switch Q3 and the 4th switch Q4.
3rd switch Q3 first end is connected with the first battery bat1, and the 3rd switch Q3 the second end is with second switch Q2's
Second end connects；4th switch Q4 first end is connected with the first battery bat1, the 4th switch Q4 the second end ground connection；
First switch Q1 and the 3rd switch Q3 conducting, second switch Q2 and the 4th switch Q4 disconnect, the first battery bat1 and
Second battery bat2 connects.
In the embodiment, charging device is turned on by the switches of first switch Q1 and the 3rd Q3, and second switch Q2 and the 4th is opened
Close Q4 to disconnect, the first battery bat1 and the second battery bat2 series connection, charge power supply VBAT pass sequentially through first switch Q1, the first electricity
Pond bat1, the 3rd switch Q3 and the second battery bat2, charge for the first battery bat1 and the second battery bat2.
Also, when discharging battery, disconnected by the switches of first switch Q1 and the 3rd Q3, second switch Q2 and the
Four switch Q4 conductings, because the first battery bat1 voltage is higher than the second battery bat2 voltage, the first battery bat1 is to second
Battery bat2 is discharged, and the first battery bat1 electricity is flowed into the second battery bat2.
Referring to Fig. 1 and Fig. 2, specifically, in one embodiment, the first battery bat1 positive pole is respectively with first switch Q1's
Second end and second switch Q2 first end connect, the first battery bat1 negative pole respectively with the 3rd switch Q3 first end with
And the 4th switch Q4 first end connection；Second battery bat2 positive pole is opened with second switch Q2 the second end and the 3rd respectively
Close Q3 the second end connection, the second battery bat2 negative pole ground connection.So, charged in the first battery bat1 and the second battery bat2
When, the first battery bat1 positive pole is connected by first switch Q1 with charge power supply VBAT, and the first battery bat1 negative pole passes through
3rd switch Q3 is connected with the second battery bat2 positive pole, the first battery bat1 and the second battery bat2 series connection, charge power supply
VBAT is that the first battery bat1 and the second battery bat2 charges.
In addition, in one embodiment, the charging device can also include：Driver, the driver and first switch Q1, the
Two switch Q2, the 3rd switch Q3 and the 4th switch Q4 are connected respectively.
Wherein, driver is led in the first battery bat1 discharge regime, the Q1 disconnections of control first switch, second switch Q2
It is logical；Driver controls the switch Q3 conductings of first switch Q1 and the 3rd in the first battery bat1 charging stage, second switch Q2 and
4th switch Q4 disconnects.
In the above-described embodiments, can be by driver to first switch Q1, second switch Q2, the 3rd switch Q3 and the 4th
The control of four switches such as Q4 is switched, realizes the pulse charge to charging device, and is capable of the first battery bat1 discharge regime,
When i.e. the first battery bat1 is in the negative pulse stage, ensure that battery electric quantity will not be lost in charging process in charging device.
Wherein, specifically, the first battery bat1 charging stage can include pre-charging stage, CV (Constant
Voltage, constant pressure) charging stage and CC (Constant Current, constant current) charging stages period 1 section；First electricity
Pond bat1 discharge regime includes the second round section of CC charging stages.
When in charging stage and CV charging stages, the switches of first switch Q1 and the 3rd Q3 is normally closed (conducting), and second opens
Close Q2 and the 4th switch Q4 it is normally opened (disconnections), the first battery bat1 and the second battery bat2 series connection, now, the first battery bat1 with
Second battery bat2 is in charged state, and pulse charge is continuously positive pulse, and circuit diagram is as shown in Figure 2.
With reference to Fig. 3, Fig. 3 is illustrated that the first battery and the second battery in the charging device that the utility model embodiment provides
In the current cycle schematic diagram of CC charging stages.In the CC charging stages, when in period 1 section, i.e. t1 sections in Fig. 3,
The switch Q3 conductings of first switch Q1 and the 3rd, the switches of second switch Q2 and the 4th Q4 disconnect, now, the first battery bat1 and second
Battery bat2 charges, as shown in Figure 2 all in positive pulse, circuit diagram.In the period 1 section, as shown in figure 3, the first battery
Bat1 electric current I1 and the second battery bat2 electric current I2 are respectively I1+ and I2+, and now, I1+ and I2+ are positive current, charging
Total battery current I is positive current in device.
When in second round section, i.e. t2 sections in Fig. 3, now, the switches of first switch Q1 and the 3rd Q3 disconnect, and second
The switch Q4 conductings of Q2 and the 4th, the first battery bat1 electric discharges are switched, the second battery bat2 charges, and the first battery bat1 is in negative arteries and veins
Punching, the second battery bat2 are in positive pulse, and circuit diagram is as shown in Figure 1.In the second round section, the first battery bat1 electricity is simultaneously
It is not lost in, but is stored in the second battery bat2, as shown in figure 3, the first battery bat1 electric current I1 and the second battery
Bat2 electric current I2 is respectively I1- and I2-, and now, the first battery bat1 is discharged with electric current I1-, and the second battery bat2 is with electric current
I2- charges, and total battery current I is positive current in charging device.
In addition, when charging device charges without battery, the switches of first switch Q1 and the 3rd Q3 is normally closed, second switch Q2
It is normally opened with the 4th switch Q4.In such manner, it is possible to it is easy to the first battery bat1 and the second battery bat2 chargings in charging device.
In addition, in some embodiments of the utility model, first switch Q1, second switch Q2, the 3rd switch Q3 and
4th switch Q4 can be metal-oxide-semiconductor (Metal-Oxide-Semiconductor Field-Effect Transistor, gold
Category-oxide semiconductor field effect transistor).In addition, using metal-oxide-semiconductor as switch, only the utility model in above example
A kind of preferred embodiment, the protection domain of the application is not limited to, for example, first switch Q1, second switch Q2, the 3rd
Switch the switch Q4 etc. of Q3 and the 4th switches can also use IGBT (Insulated Gate Bipolar Transistor, absolutely
Edge grid bipolar transistor) or other on-off circuits or device, as long as it can play the work of conducting to path and disconnection
It is applicable in the utility model embodiment.
In addition, in one embodiment, the charging device can also include charge integrated circuit, the charge integrated circuit with
First switch Q1 first end connection, and export charge power supply VBAT.Specifically, the charge integrated circuit include booster circuit with
And reduction voltage circuit.Here, by charge integrated circuit by power supply boosted and decompression processing after output form charge power supply
VBAT, so that the first battery bat1 and the second battery bat2 charges.Wherein, in an example, the charge integrated circuit, boosting electricity
Road can be Boost circuit, and reduction voltage circuit can be Buck circuits.In addition, booster circuit and reduction voltage circuit can be merged into together
One circuit, such as Buck/Boost circuits.
Referring to Fig. 4, in one embodiment, the charging device, can also include：Power IC is (i.e. shown in Fig. 4
Power supply IC), one end of the power IC is connected with second switch Q2 the second end, and the other end and the second battery bat2 connect
Connect.In the embodiment, boosted or be depressured by electric discharge of the power IC to the first battery bat1, with the electricity of protection second
Pond bat2 is without damage.Wherein, in a specific example, the charging device is simultaneously including power IC and the integrated electricity of charging
Road, the power IC and charge integrated circuit can use same or similar circuit structure.
It should be noted that in the utility model embodiment, the improvement of annexation is pertained only to, is not directed to functional
Improve, here, involved driver, charge integrated circuit and power IC etc. are adopted in the utility model embodiment
With prior art, its possessed function is not improved in the present embodiment.
In addition, in actual use, be configured with substantial amounts of low-voltage load in conventional electronic equipment, for example, 2.8V loads and
1.8V loads etc., only configure a battery, typically use battery of the voltage regime for 4.4V, its work in existing battery system
Voltage is probably in more than 3.6V, when using the battery to be powered for low-voltage load, because the battery also needs to power for high-voltage load,
Therefore generally require in use by boost to be depressurized to 2.8V or 1.8V again after 5V after be powered, now need to carry out twice
Voltage conversion, its power supplying efficiency are low.By the charging device of the utility model embodiment, due to possess the first battery bat1 and
Second batteries of battery bat2 two, and the first battery bat1 voltage is higher than the second battery bat2 voltage, in use, can be with
Second battery bat2 is powered for low-voltage load, specifically, when low-voltage load is that 1.8V is loaded or 2.8V is loaded, the second battery
Bat2 can use battery of the voltage regime for 3-4V, only need to be by voltage when being powered by the second battery bat2 for low-voltage load
It is depressurized to the operating voltage 2.8V and 1.8V of low-voltage load.So, born compared to the one big voltage battery of tradition for low pressure
Power supply is carried, the charging device that the utility model embodiment provides can provide the transformation efficiency of circuit.
The charging device that the utility model embodiment provides, including the first battery and the second battery, and the electricity of the first battery
Pressure be higher than the second battery, is disconnected by first switch, and second switch turns on, the first battery can to the second battery discharge, i.e., the
When one battery is in negative pulse, the electricity of the first battery flows into the second battery, so as to ensure that battery electric quantity will not in charging device
It is lost in charging process, and then the charging interval can be reduced.
In addition, the utility model embodiment also provides a kind of mobile terminal, including above-mentioned charging device.
Wherein, because the structure of terminal body is prior art, the structural principle of charging device is in above-described embodiment
In be described in detail, therefore, the structure in the present embodiment for specific mobile terminal repeats no more.
In addition, the mobile terminal can be mobile phone, tablet personal computer, laptop computer, personal digital assistant or wearable
Formula equipment.
In the utility model embodiment, the mobile terminal with above-mentioned charging device, because charging device is in charging process
Middle battery electric quantity will not be lost in, and then can reduce the charging interval, therefore can ensure the charge efficiency of mobile terminal, in addition,
Because charging device possesses two batteries, therefore also improve power supplying efficiency of the mobile terminal for low-voltage load.
It should be understood that in the description of specification, reference term " embodiment ", " one embodiment " or " some realities for mentioning
Apply example " mean that the special characteristic relevant with embodiment, structure or characteristic are included at least one embodiment of the present utility model
Or in example.Therefore, " in one embodiment " that occurs everywhere in entire disclosure, " in one embodiment " or " at some
In embodiment " not necessarily refer to identical embodiment.In addition, what these specific feature, structure or characteristics can arbitrarily be adapted to
Mode combines in one or more embodiments.
In addition, in one or more embodiments herein, such as " comprising " or "comprising" are used to illustrate to exist to enumerate
Feature or component, but do not exclude the presence of one or more of the other feature enumerated or one or more of the other component.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
Calmly ", the term such as " setting " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；
Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, may be used
To understand concrete meaning of the above-mentioned term in the utility model as the case may be.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (10)
- A kind of 1. charging device, it is characterised in that including：First switch (Q1), second switch (Q2), the first battery (bat1) with And second battery (bat2)；The first end of the first switch (Q1) is connected with charge power supply (VBAT), the second end of the first switch (Q1) and institute State the first battery (bat1) connection；The first end of the second switch (Q2) is connected with the second end of the first switch (Q1), and with first battery (bat1) connect, the second end of the second switch (Q2) is connected with second battery (bat2)；Wherein, the voltage of first battery (bat1) is more than the voltage of second battery (bat2), the first switch (Q1) when disconnecting, second switch (Q2) conducting.
- 2. charging device according to claim 1, it is characterised in that also include：3rd switch (Q3) and the 4th switch (Q4)；The first end of 3rd switch (Q3) is connected with first battery (bat1), the second end of the 3rd switch (Q3) It is connected with the second end of the second switch (Q2)；The first end of 4th switch (Q4) is connected with first battery (bat1), the second end of the 4th switch (Q4) Ground connection；The first switch (Q1) and the 3rd switch (Q3) conducting, the second switch (Q2) and the 4th switch (Q4) Disconnect, first battery (bat1) and second battery (bat2) series connection.
- 3. charging device according to claim 2, it is characterised in that the positive pole of first battery (bat1) respectively with institute State the second end of first switch (Q1) and the first end connection of the second switch (Q2), first battery (bat1) are born Pole is connected with the first end of the described 3rd switch (Q3) and the first end of the 4th switch (Q4) respectively；The positive pole of second battery (bat2) switchs (Q3) with the second end of the second switch (Q2) and the 3rd respectively Second end connects, the negative pole ground connection of second battery (bat2).
- 4. charging device according to claim 3, it is characterised in that also include：Driver, the driver and described the One switch (Q1), second switch (Q2), the 3rd switch (Q3) and the 4th switch (Q4) connect respectively；The driver controls the first switch (Q1) to disconnect in the discharge regime of first battery (bat1), and described the Two switch (Q2) conductings；The driver controls the first switch (Q1) and the described 3rd to open in the charging stage of first battery (bat1) (Q3) conducting is closed, the second switch (Q2) and the 4th switch (Q4) disconnect.
- 5. charging device according to claim 2, it is characterised in that the first switch (Q1), second switch (Q2), Three switches (Q3) and the 4th switch (Q4) are metal-oxide-semiconductor.
- 6. charging device according to claim 1, it is characterised in that also integrated including charge integrated circuit, the charging Circuit is connected with the first end of the first switch (Q1), and exports the charge power supply (VBAT).
- 7. charging device according to claim 6, it is characterised in that the charge integrated circuit include booster circuit and Reduction voltage circuit.
- 8. charging device according to claim 1, it is characterised in that also include：Power IC, the power supply integrate One end of circuit is connected with the second end of the second switch (Q2), and the other end is connected with second battery (bat2).
- 9. a kind of mobile terminal, it is characterised in that including the charging device as described in any one of claim 1 to 8.
- 10. mobile terminal according to claim 9, it is characterised in that the mobile terminal is mobile phone, tablet personal computer, knee Laptop, personal digital assistant or wearable device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720276666.9U CN206759075U (en) | 2017-03-21 | 2017-03-21 | A kind of charging device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720276666.9U CN206759075U (en) | 2017-03-21 | 2017-03-21 | A kind of charging device and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206759075U true CN206759075U (en) | 2017-12-15 |
Family
ID=60611327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720276666.9U Active CN206759075U (en) | 2017-03-21 | 2017-03-21 | A kind of charging device and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206759075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667473A (en) * | 2022-12-13 | 2023-08-29 | 荣耀终端有限公司 | Control circuit, circuit control method and electronic equipment |
-
2017
- 2017-03-21 CN CN201720276666.9U patent/CN206759075U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667473A (en) * | 2022-12-13 | 2023-08-29 | 荣耀终端有限公司 | Control circuit, circuit control method and electronic equipment |
| CN116667473B (en) * | 2022-12-13 | 2024-04-16 | 荣耀终端有限公司 | Control circuit, circuit control method and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10250059B2 (en) | Charging circuit for battery-powered device | |
| CN103454572B (en) | Battery analogue circuit | |
| CN204407954U (en) | Multiinputoutput fills portable power source soon | |
| CN204258279U (en) | A kind of lithium battery low voltage protection circuit | |
| CN103560550B (en) | One can be powered and charging device to mobile electronic device simultaneously | |
| CN103607009A (en) | Charging and discharging circuit with automatic protecting function | |
| CN102255345A (en) | Double-cell power supply circuit | |
| CN104348202A (en) | Charging control circuit and method and electronic device | |
| CN103199504B (en) | A kind of battery protecting circuit with booster circuit | |
| CN106160452A (en) | The power-supply system of suppression electromagnetic interference | |
| CN206759075U (en) | A kind of charging device and mobile terminal | |
| CN108306345A (en) | Energy storage inversion system intelligent energy-saving device | |
| CN201690250U (en) | Double-cell electric-supplying device | |
| CN206628854U (en) | A kind of charging device and mobile terminal | |
| WO2022218220A1 (en) | Charging/discharging circuit and electronic device | |
| WO2020087284A1 (en) | Battery control circuit, battery and unmanned aerial vehicle | |
| CN203233198U (en) | Battery charging and discharging control circuit and mobile terminal | |
| CN203491731U (en) | Charging control circuit and electronic equipment | |
| CN203590034U (en) | Switch power supply circuit | |
| CN203522276U (en) | Charging and discharging control circuit for lithium battery | |
| CN206948184U (en) | A kind of booster circuit for cell switch control circuit | |
| CN202309157U (en) | Power supply cell with one port for both charging and discharging | |
| CN107367695B (en) | High-voltage lithium ion battery charge-discharge test system | |
| CN206908515U (en) | A kind of synchronization lifting volt circuit of wide-voltage range input | |
| CN207134826U (en) | A kind of booster circuit of Big Dipper portable device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |