CN205811586U - The charge-discharge circuit of a kind of battery and portable power source - Google Patents
The charge-discharge circuit of a kind of battery and portable power source Download PDFInfo
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- CN205811586U CN205811586U CN201620605450.8U CN201620605450U CN205811586U CN 205811586 U CN205811586 U CN 205811586U CN 201620605450 U CN201620605450 U CN 201620605450U CN 205811586 U CN205811586 U CN 205811586U
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Abstract
This utility model relates to the discharge and recharge technical field of battery, it is provided that the charge-discharge circuit of a kind of battery and portable power source.This charge-discharge circuit includes: the first voltage input module, the second voltage input/output module, switch handover module and control module；Control the multiple battery cores in set of cells by switch handover module and carry out series connection and switching in parallel, when the multiple battery cores switched in handover module control set of cells are in parallel connection, input the first voltage by the first voltage input module set of cells is charged, when the multiple battery cores switched in handover module control set of cells are in series connection, input the second voltage by the second voltage input/output module set of cells is charged, control module is by detecting the charging voltage of multiple battery cores simultaneously, and then set of cells is overcharged protection, not only solve the problem that existing mobile power supply unit just can only be charged by special power supply adaptor, also provide charge and discharge protection for set of cells.
Description
Technical field
This utility model relates to the discharge and recharge technical field of battery, particularly relates to the charge-discharge circuit of a kind of battery and mobile electricity
Source.
Background technology
Along with science and technology development, people are the most at work or in life, the intelligent terminal touched also gets over
Come the most.Owing to existing intelligent terminal generally exists the big shortcoming slow with supply of power consumption, the most also have increasing
Consumer buys mobile power supply unit, such as portable power source.Existing mobile power supply unit is in parallel by multiple battery cores or string
Connection is formed by connecting, and when being charged for peripheral hardware charger, owing to the number of battery core is different, needs to use charge power supply management
Electric current is that the battery core of its internal series-connection is charged together, say, that need to use special power supply adaptor.
In sum, existing mobile power supply unit can only be by asking that special power supply adaptor just can be charged
Topic.
Utility model content
The purpose of this utility model is to provide charge-discharge circuit and the portable power source of a kind of battery, it is intended to solve existing shifting
The problem that dynamic power supply unit just can only be charged by special power supply adaptor.
The charge-discharge circuit of a kind of battery that this utility model provides, is connected with the set of cells including multiple battery core, described in fill
Electric discharge road includes: the first voltage input module, the second voltage input/output module, switch handover module and control module；
Described first voltage input module and the second voltage input/output module connect external power source；
Described switch handover module includes that multipair switching switches set, the input of every pair of switching switches set connect described first
Voltage input module and the second voltage input/output module, every pair switching switches set two outfans respectively with each battery core
Positive terminal is connected with negative pole end, and described switch handover module controls the multiple battery cores in described set of cells and carries out series connection and parallel connection
Switching；
Described control module includes multiple first test side and multiple second test side, multiple the first of described control module
Test side connects by described multipair switching switches set is corresponding with the positive terminal of the plurality of battery core, described control module multiple
Second test side connects by described multipair switching switches set is corresponding with the negative pole end of the plurality of battery core, in described switch switching
When multiple battery cores in the module described set of cells of control are in parallel connection, input the first voltage by described first voltage input module
Described set of cells is charged, when the multiple battery cores in described switch handover module controls described set of cells are in series connection,
Inputting the second voltage by described second voltage input/output module to be charged described set of cells, described control module is passed through
Detecting the charging voltage of the plurality of battery core, and then described set of cells is overcharged protection, wherein, described first voltage is more than
Described second voltage.
Further, described every pair of switching switches set includes the first switch and second switch, and described first switch includes the
One movable end, the second movable end and fixing end, the first movable end of described first switch is connected with described control module, and described the
Second movable end of one switch is connected with described first voltage input module, the fixing end of described first switch and described battery core
Positive terminal is connected, and described second switch includes the first movable end, the second movable end and fixing end, and the first of described second switch lives
Moved end is connected with described control module, and the second movable end of described second switch is connected with described first voltage input module, institute
The negative pole end of the fixing end and described battery core of stating second switch is connected.
Further, described first voltage input module includes: electrode input end and negative input,
What the electrode input end of described first voltage input module connect in described multipair switching switches set altogether multiple first opens
The second movable end closed, it is multiple that the negative input of described first voltage input module connects in described multipair switching switches set altogether
Second movable end of second switch.
Further, described control module includes chip U1, resistance R1, the first switching tube and second switch pipe；
Described chip U1 includes multiple first voltage detecting end and multiple second voltage detecting end, and described chip U1's is multiple
First voltage detecting end is multiple first test sides of described control module, respectively by described switch handover module with described many
The positive terminal of individual battery core is connected, and multiple second voltage detecting ends of described chip U1 are multiple second detections of described control module
End, is connected with the negative pole end of the plurality of battery core by described switch handover module respectively, first end of described resistance R1 and institute
The current detecting end stating chip U1 is connected, and the second end ground connection of described resistance R1, the controlled end of described first switching tube is with described
The Cross prevention end of chip U1 is connected, and the hot end of described first switching tube is connected with first end of described resistance R1, described
The cold end of the first switching tube is connected with the cold end of described second switch pipe, the hot end of described second switch pipe with
Described second voltage input/output module is connected, and the controlled end of described second switch pipe overcharges protection end phase with described chip U1's
Even.
Further, the first switching tube is the IGBT pipe of metal-oxide-semiconductor, IGBT pipe or band body diode.
Further, second switch pipe is the IGBT pipe of metal-oxide-semiconductor, IGBT pipe or band body diode.
Further, described first voltage input module is USB Type-C interface, mini USB interface or micro USB
Interface.
Further, described second voltage input/output module is USB Type-C interface, mini USB interface or micro
USB interface.
Another object of the present utility model is to provide a kind of portable power source, and described portable power source includes by multiple battery core groups
The set of cells become, described portable power source also includes the charge-discharge circuit of the battery being connected with described set of cells, the charge and discharge of described battery
Circuit is the charge-discharge circuit of battery as above.
The charge-discharge circuit of a kind of battery that this utility model provides, is connected with the set of cells including multiple battery core, this charge and discharge
Circuit includes: the first voltage input module, the second voltage input/output module, switch handover module and control module；Pass through
Switch handover module controls the multiple battery cores in set of cells and carries out series connection and switching in parallel, controls battery at switch handover module
When multiple battery cores in group are in parallel connection, input the first voltage by the first voltage input module and set of cells is charged,
When multiple battery cores in switch handover module control set of cells are in series connection, by the second voltage input/output module input second
Set of cells is charged by voltage, and control module is by detecting the charging voltage of multiple battery cores simultaneously, and then carries out set of cells
Overcharging protection, not only solving existing mobile power supply unit can only be by asking that special power supply adaptor just can be charged
Topic, also provides charge and discharge protection for set of cells.
Accompanying drawing explanation
Fig. 1 is the charge-discharge circuit structural representation of the battery that this utility model embodiment provides；
Fig. 2 is the charge-discharge circuit physical circuit figure of the battery that this utility model embodiment provides；
Fig. 3 is the portable power source structural representation that this utility model embodiment provides.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.
Below in conjunction with concrete accompanying drawing, realization of the present utility model is described in detail:
The purpose of this utility model is to provide charge-discharge circuit and the portable power source of a kind of battery, it is intended to solve existing shifting
The problem that dynamic power supply unit just can only be charged by special power supply adaptor.
Fig. 1 shows the charge-discharge circuit structural representation of the battery that this utility model embodiment provides, for convenience of description,
Only illustrating part related to the present embodiment, details are as follows:
As it is shown in figure 1, the charge-discharge circuit 100 of a kind of battery of the present embodiment offer, with the battery including multiple battery core 210
Group 200 is connected, and this charge-discharge circuit 100 includes: first voltage input module the 10, second voltage input/output module 20, switch are cut
Die change block 30 and control module 40；
First voltage input module 10 and the second voltage input/output module 20 connect external power source；
Switch handover module 30 includes that multipair switching switches set 31, the input of every pair of switching switches set 31 connect the first electricity
Pressure input module 10 and the second voltage input/output module 20, two outfans of 30 groups of the every pair of switching switch respectively with each electricity
The positive terminal of core 210 is connected with negative pole end, and multiple battery cores 210 that switch handover module 30 controls in set of cells 200 are connected
With switching in parallel；
Control module 40 includes multiple first test side and multiple second test side, multiple first detections of control module 40
Hold and connect by multipair switching switches set 31 is corresponding with the positive terminal of multiple battery cores 310, multiple second detections of control module 40
Hold and connect by multipair switching switches set 31 is corresponding with the negative pole end of multiple battery cores, control set of cells at switch handover module 30
When multiple battery cores 210 in 200 are in parallel connection, input the first voltage by the first voltage input module 10 and set of cells 200 is entered
Row charging, switch handover module 30 control the multiple battery cores 210 in set of cells 200 be in series connection time, defeated by the second voltage
Entering output module 20 to input the second voltage and be charged set of cells 200, control module 40 is by detecting multiple battery cores 210 simultaneously
Charging voltage, and then set of cells 200 is overcharged protection, wherein, the first voltage is more than the second voltage.
In the present embodiment, switch handover module 30 can be electronic control switch, by charging/discharging voltage being detected, enters
And control to switch handover module 30 and the multiple battery cores 210 in set of cells 200 are connected and switching between parallel connection.Switch is cut
Die change block 30 can also be the gang switch manually stirred or press, and user arranges this switch handover module according to practical situation
30, switch series connection and the parallel connection of multiple battery core 210.
It should be noted that when all battery cores 210 are together in parallel, all battery cores 210 are equivalent to an economize on electricity core more than 210
And, as long as so by the charging voltage that output voltage is single battery core, and the charger of correspondence is the most chargeable, it is not necessary to consider
The battery core number of internal battery pack again.Such as, the voltage being charged for single battery core is 4.2V, is carrying out for set of cells 200
During charging, it is only necessary to switched to the state of all battery cores 210 parallel connection by switch handover module 20, use output voltage is 4.2V
Charger can be charged.
It addition, another kind of charge condition is that to switch all battery cores 210 by switch handover module 30 be series connection, second
After voltage input/output module 20 connects external power source 300, control module 40 is by controlling the second voltage input/output module 20
It is charged for set of cells 200 by external power source 300.
The charge-discharge circuit of a kind of battery that the present embodiment provides, is connected with the set of cells including multiple battery core, this discharge and recharge
Road includes: the first voltage input module, the second voltage input/output module, switch handover module and control module；By opening
The multiple battery cores closed in handover module control set of cells carry out series connection and switching in parallel, in switch handover module control set of cells
When interior multiple battery cores are in parallel connection, input the first voltage by the first voltage input module and set of cells is charged, opening
When multiple battery cores in the handover module control set of cells of pass are in series connection, by second voltage input/output module input the second electricity
Set of cells is charged by pressure, and control module is by detecting the charging voltage of multiple battery cores simultaneously, and then carries out set of cells
Filling protection, not only solving existing mobile power supply unit can only be by asking that special power supply adaptor just can be charged
Topic, also provides charge and discharge protection for set of cells.
Fig. 2 shows the charge-discharge circuit physical circuit figure of the battery that this utility model embodiment provides, as in figure 2 it is shown,
Every pair of switching switches set includes that the first switch WS1 and second switch WS2, the first switch WS1 include the first movable end, the second activity
End and fixing end, first movable end of the first switch WS1 is connected with control module 30, second movable end of the first switch WS1 and
First voltage input module 10 is connected, and the fixing end of the first switch is connected with the positive terminal of battery core 210, and second switch WS2 includes
First movable end, the second movable end and fixing end, first movable end of second switch WS2 is connected with control module 30, and second opens
The second movable end and the first voltage input module 10 that close WS2 are connected, the fixing end of second switch WS2 and the negative pole of battery core 210
End is connected.
First voltage input module 10 includes: electrode input end IN+ and negative input IN-,
The electrode input end IN+ of the first voltage input module 10 connects multiple first switches in multipair switching switches set 21 altogether
Second movable end of WS1, it is multiple that the negative input IN-of the first voltage input module 10 connects in multipair switching switches set 21 altogether
Second movable end of second switch WS2.
Control module 40 includes chip U1, resistance R1, the first switching tube Q1 and second switch pipe Q2；
Chip U1 include multiple first voltage detecting end (1V1 ... nV1) and multiple second voltage detecting end (1V2 ...
NV2), multiple first test sides that multiple first voltage detecting ends (1V1 ... nV1) are control module 40 of chip U1, respectively
It is connected with the positive terminal of multiple battery cores 210 by switch handover module 20, multiple second voltage detecting ends of chip U1
(1V2 ... nV2) is multiple second test sides of control module 40, respectively by switch handover module 30 and multiple battery cores 210
Negative pole end be connected, first end of resistance R1 is connected with the current detecting end INI of chip U1, the second end ground connection of resistance R1, the
The controlled end of one switching tube Q1 is connected with the Cross prevention end P1 of chip U1, and the hot end of the first switching tube Q1 is with resistance R1's
First end is connected, and the cold end of the first switching tube Q1 is connected with the cold end of second switch pipe Q2, second switch pipe Q2's
Hot end and the second voltage input/output module 20 are connected, and the controlled end of second switch pipe Q2 overcharges protection end with chip U1's
P2 is connected.
It should be noted that in all embodiments of the present utility model, each second voltage detecting end V2 and next
The the first voltage detecting end V1 being connected switching switches set 31 is connected, i.e. the second voltage detecting end V2 adjacent on chip U1 and the
One voltage detecting end V1 is connected, therefore when the first switch WS1 and second switch WS2 is conducting the first movable end, and all electricity
Core 210 realizes series connection.
In other embodiments of the present utility model, the first switching tube Q1 and second switch pipe Q2 can be metal-oxide-semiconductor, IGBT
The IGBT pipe of pipe or band body diode.As a example by the first switching tube Q1 is for NMOS tube Q1, the hot end of the first switching tube Q1 is
The colelctor electrode of NMOS tube Q1, the emitter stage that cold end is NMOS tube Q1 of the first switching tube Q1, the first switching tube Q1's is controlled
End is the base stage of NMOS tube Q1.Equally, as a example by second switch pipe Q2 is for NMOS tube Q2, the hot end of second switch pipe Q2 is
The colelctor electrode of NMOS tube Q2, the emitter stage that cold end is NMOS tube Q2 of second switch pipe Q2, second switch pipe Q2's is controlled
End is the base stage of NMOS tube Q2.
It should be noted that in actual applications, control module 40 overcharging set of cells 200 can at utmost be realized
For the purpose of Cross prevention, the first switching tube and second switch pipe are carried out selection or the combination collocation of different size.
First voltage input module 10 and the second voltage input/output module 20 can be USB Type-C interface, mini
USB interface or micro USB interface.In actual applications, can be with specific reference to adaptive condition to the first voltage input module 10
The agreement carrying out interface with the second voltage input/output module 20 selects, at utmost to coordinate user's to have particular application as standard.
Below in conjunction with Fig. 1 and Fig. 2, the operation principle of the charge-discharge circuit 100 of the battery that the present embodiment provides is described,
First switch WS1 and second switch WS2 is separately positioned on positive terminal and the negative pole end of each battery core 210, when all of first opens
When pass WS1 and second switch WS2 is both turned on the first movable end, all battery cores 210 realize series connection, by control module 40 and input
Second voltage input/output module 20 is powered for electrical equipment 400.When powering for electrical equipment 400, in control module 40
Chip U1 carries out reality by multiple first voltage detecting ends and multiple second voltage detecting end to the discharge voltage of each battery core 210
Time monitoring, when all battery cores 210 series connection output voltage more than Cross prevention voltage time, chip U1 output high level by first
Switching tube Q1 and second switch pipe Q2 opens, and carries out normal power supply output.When the discharge voltage of all battery cores 210 series connection was less than
During electric discharge pressure point, chip U1 closing switch pipe Q1 and then realize Cross prevention.
When all of first switch WS1 and all of second switch WS2 is both turned on the second movable end, all battery cores 210
Realizing parallel connection, it is that set of cells 200 is charged that external power source 300 inputs the first voltage by the first voltage input module 10.This enforcement
The charging circuit of the battery that example provides, by switching the series connection of battery core 210 and parallel connection, and then realizes set of cells 200 charged electrical
The switching of pressure.
When all of first switch WS1 and second switch WS2 is both turned on the first movable end, all battery cores 210 realize string
Connection, external power source 300 inputs the second voltage and control module 30 for set of cells by inputting the second voltage input/output module 20
200 chargings.Chip U1 in control module 30 by multiple first voltage detecting ends and multiple second voltage detecting end to each
The charging voltage of battery core 210 monitors in real time, and when each battery core 210 is fully charged, chip U1 output low level is opened second
Closing pipe Q2 to end, charging terminates, and then realizes overcharging protection.
The present embodiment also provides for a kind of portable power source 500, and portable power source 500 includes the battery being made up of multiple battery cores 210
Group 200, portable power source 500 also includes the charge-discharge circuit 100 of the battery being connected with set of cells 200, and the charge-discharge circuit 100 of battery is
The charge-discharge circuit 100 of the battery in above-described embodiment.In the present embodiment, the skill that portable power source 500 is relevant to this utility model
Art scheme and implementation describe in detail the most in the above-described embodiments, and here is omitted.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (9)
1. a charge-discharge circuit for battery, is connected with the set of cells including multiple battery core, it is characterised in that described charge-discharge circuit bag
Include: the first voltage input module, the second voltage input/output module, switch handover module and control module；
Described first voltage input module and the second voltage input/output module connect external power source；
Described switch handover module includes that multipair switching switches set, the input of every pair of switching switches set connect described first voltage
Input module and the second voltage input/output module, two outfans of every pair of switching switches set respectively with the positive pole of each battery core
End is connected with negative pole end, and described switch handover module controls the multiple battery cores in described set of cells and carries out series connection and in parallel cutting
Change；
Described control module includes multiple first test side and multiple second test side, multiple first detections of described control module
Hold and connect by described multipair switching switches set is corresponding with the positive terminal of the plurality of battery core, multiple the second of described control module
Test side connects, at described switch handover module by described multipair switching switches set is corresponding with the negative pole end of the plurality of battery core
Control the multiple battery cores in described set of cells when being in parallel connection, input the first voltage to institute by described first voltage input module
State set of cells to be charged, when the multiple battery cores in described switch handover module controls described set of cells are in series connection, pass through
Described second voltage input/output module inputs the second voltage and is charged described set of cells, and described control module is by detection
The charging voltage of the plurality of battery core, and then described set of cells is overcharged protection, wherein, described first voltage is more than described
Second voltage.
The charge-discharge circuit of battery the most according to claim 1, it is characterised in that described every pair of switching switches set includes: the
One switch and second switch；
Described first switch includes the first movable end, the second movable end and fixing end, the first movable end of described first switch with
Described control module is connected, and the second movable end of described first switch is connected with described first voltage input module, and described first
The fixing end of switch is connected with the positive terminal of described battery core, and described second switch includes the first movable end, the second movable end and consolidates
Fixed end, the first movable end of described second switch is connected with described control module, the second movable end of described second switch and institute
Stating the first voltage input module to be connected, the fixing end of described second switch is connected with the negative pole end of described battery core.
The charge-discharge circuit of battery the most according to claim 2, it is characterised in that described first voltage input module includes:
Electrode input end and negative input,
The electrode input end of described first voltage input module connects multiple first switches in described multipair switching switches set altogether
Second movable end, the negative input of described first voltage input module connects multiple second in described multipair switching switches set altogether
Second movable end of switch.
The charge-discharge circuit of battery the most according to claim 1, it is characterised in that described control module includes chip U1, electricity
Resistance R1, the first switching tube and second switch pipe；
Described chip U1 includes multiple first voltage detecting end and multiple second voltage detecting end, multiple the first of described chip U1
Voltage detecting end is multiple first test sides of described control module, respectively by described switch handover module and the plurality of electricity
The positive terminal of core is connected, multiple second test sides that multiple second voltage detecting ends are described control module of described chip U1,
It is connected with the negative pole end of the plurality of battery core by described switch handover module respectively, first end of described resistance R1 and described core
The current detecting end of sheet U1 is connected, the second end ground connection of described resistance R1, the controlled end of described first switching tube and described chip
The Cross prevention end of U1 is connected, and the hot end of described first switching tube is connected with first end of described resistance R1, and described first
The cold end of switching tube is connected with the cold end of described second switch pipe, and the hot end of described second switch pipe is with described
Second voltage input/output module is connected, and the controlled end of described second switch pipe is connected with the protection end that overcharges of described chip U1.
The charge-discharge circuit of battery the most according to claim 4, it is characterised in that the first switching tube be metal-oxide-semiconductor, IGBT pipe or
IGBT pipe with body diode.
The charge-discharge circuit of battery the most according to claim 4, it is characterised in that second switch pipe be metal-oxide-semiconductor, IGBT pipe or
IGBT pipe with body diode.
The charge-discharge circuit of battery the most according to claim 1, it is characterised in that described first voltage input module is USB
Type-C interface, mini USB interface or micro USB interface.
The charge-discharge circuit of battery the most according to claim 1, it is characterised in that described second voltage input/output module is
USB Type-C interface, mini USB interface or micro USB interface.
9. a portable power source, described portable power source includes the set of cells being made up of multiple battery cores, it is characterised in that described movement
Power supply also includes the charge-discharge circuit of the battery being connected with described set of cells, and the charge-discharge circuit of described battery is such as claim 1-8
The charge-discharge circuit of the battery described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620605450.8U CN205811586U (en) | 2016-06-20 | 2016-06-20 | The charge-discharge circuit of a kind of battery and portable power source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620605450.8U CN205811586U (en) | 2016-06-20 | 2016-06-20 | The charge-discharge circuit of a kind of battery and portable power source |
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| Publication Number | Publication Date |
|---|---|
| CN205811586U true CN205811586U (en) | 2016-12-14 |
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|---|---|---|---|
| CN201620605450.8U Expired - Fee Related CN205811586U (en) | 2016-06-20 | 2016-06-20 | The charge-discharge circuit of a kind of battery and portable power source |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221976A (en) * | 2017-06-11 | 2017-09-29 | 刘慧� | A kind of portable power source |
| CN109249840A (en) * | 2017-07-05 | 2019-01-22 | 保时捷股份公司 | High-tension battery distribution for charging pile connection |
| CN109586371A (en) * | 2018-12-13 | 2019-04-05 | 上海交通大学 | The series-parallel suitching type battery circuit of charge and discharge |
| CN110224184A (en) * | 2018-03-01 | 2019-09-10 | 法法汽车(中国)有限公司 | Power battery, electric car and the control method to charge to the power battery |
| CN110741528A (en) * | 2018-12-21 | 2020-01-31 | Oppo广东移动通信有限公司 | Battery power supply circuit, equipment to be charged and charging control method |
| CN111819752A (en) * | 2018-03-16 | 2020-10-23 | 雅马哈株式会社 | Battery charging/discharging circuit, electronic device, musical instrument, and battery charging/discharging method |
| CN113725931A (en) * | 2020-05-25 | 2021-11-30 | Oppo广东移动通信有限公司 | Battery pack charging circuit, battery pack discharging circuit and battery pack |
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2016
- 2016-06-20 CN CN201620605450.8U patent/CN205811586U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221976A (en) * | 2017-06-11 | 2017-09-29 | 刘慧� | A kind of portable power source |
| CN109249840A (en) * | 2017-07-05 | 2019-01-22 | 保时捷股份公司 | High-tension battery distribution for charging pile connection |
| CN110224184A (en) * | 2018-03-01 | 2019-09-10 | 法法汽车(中国)有限公司 | Power battery, electric car and the control method to charge to the power battery |
| CN111819752A (en) * | 2018-03-16 | 2020-10-23 | 雅马哈株式会社 | Battery charging/discharging circuit, electronic device, musical instrument, and battery charging/discharging method |
| CN109586371A (en) * | 2018-12-13 | 2019-04-05 | 上海交通大学 | The series-parallel suitching type battery circuit of charge and discharge |
| CN110741528A (en) * | 2018-12-21 | 2020-01-31 | Oppo广东移动通信有限公司 | Battery power supply circuit, equipment to be charged and charging control method |
| CN110741528B (en) * | 2018-12-21 | 2024-03-15 | Oppo广东移动通信有限公司 | Battery power supply circuit, equipment to be charged and charging control method |
| CN113725931A (en) * | 2020-05-25 | 2021-11-30 | Oppo广东移动通信有限公司 | Battery pack charging circuit, battery pack discharging circuit and battery pack |
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