CN110474391A - Charging circuit and electronic equipment - Google Patents

Charging circuit and electronic equipment Download PDF

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Publication number
CN110474391A
CN110474391A CN201910732696.XA CN201910732696A CN110474391A CN 110474391 A CN110474391 A CN 110474391A CN 201910732696 A CN201910732696 A CN 201910732696A CN 110474391 A CN110474391 A CN 110474391A
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CN
China
Prior art keywords
circuit
charging
circuit board
battery
board
Prior art date
Application number
CN201910732696.XA
Other languages
Chinese (zh)
Inventor
田晨
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201910732696.XA priority Critical patent/CN110474391A/en
Publication of CN110474391A publication Critical patent/CN110474391A/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention relates to a kind of charging circuit and electronic equipments.Wherein, charging circuit includes charging interface, first circuit board, second circuit board, battery protection circuit and control circuit; the first charging path is formed between first circuit board and battery protection circuit, and the second charging path is formed between first circuit board, second circuit board and battery protection circuit.Control circuit is when charging interface is connect with external power supply, control the first charging path and the conducting of the second charging path, so that charging voltage and electric current are simultaneously battery charging via the first charging path and the second charging path, to which charging circuit is charged by the way of shunting, whole path resistance further reduces, overall power is optimized, and risk and loss under high current working condition are reduced, and improves safety and reliability.

Description

Charging circuit and electronic equipment
Technical field
This application involves intelligent terminal technical fields, more particularly to a kind of charging circuit and electronic equipment.
Background technique
With the development of the electronic device technologies such as mobile phone, tablet computer, user using electronic equipment frequency also increasingly It is high.In order to improve the portability of electronic equipment, usual electronic equipment is built-in with battery, just it can guarantee equipment in time for battery charging Normal operation.
However, the path length of charging, path resistance is usually relatively high in illustrative electronic equipment, and battery charges Path it is single, when needing large current charge, internal loss will be promoted significantly if impedance can not reduce, and complete machine is caused to be sent out Heat influences user experience, and there are potential security risks.
Summary of the invention
The embodiment of the present application provides a kind of charging circuit and electronic equipment, can reduce path resistance, optimization complete machine charging Power consumption improves safety and reliability.
In order to achieve the object of the present invention, the present invention adopts the following technical scheme:
A kind of charging circuit, is applied to electronic equipment, and the charging circuit includes:
Charging interface receives the charging voltage and electric current that the external power supply provides for connecting with external power supply;
First circuit board is connect with the charging interface;
Second circuit board is connect with the first circuit board;
Battery protection circuit is connect with the first circuit board, the second circuit board and battery respectively;
Control circuit, for when the charging interface is connect with the external power supply, control the first circuit board with The first charging path conducting between the battery protection circuit, and the control first circuit board, the second circuit The second charging path conducting between plate and the battery protection circuit, so that the charging voltage and electric current are simultaneously via institute The first charging path and second charging path are stated as battery charging.
A kind of electronic equipment, the electronic equipment include charging circuit and battery as described above.
Above-mentioned charging circuit, connect with battery, including charging interface, first circuit board, second circuit board, battery protection electricity Road plate and control circuit form the first charging path, first circuit board, between first circuit board and battery protection circuit The second charging path is formed between two circuit boards and battery protection circuit.Control circuit is connect in charging interface with external power supply When, the first charging path and the conducting of the second charging path are controlled, so that charging voltage and electric current are logical via the first charging simultaneously Road and the second charging path are battery charging, so that charging circuit is by the way of shunting using charging, whole path resistance is into one Step ground reduces, and overall power optimized, and reduces risk and loss under high current working condition, improves safety and reliable Property.
Above-mentioned electronic equipment, including charging circuit as described above and battery, since charging circuit can reduce access resistance It is anti-, risk and loss under high current working condition are reduced, thus electronic equipment is in application process, can optimize high current Path optimizes complete machine temperature rise, has stronger safety and reliability.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the structural block diagram of charging circuit in one embodiment;
Fig. 1 a- Fig. 1 c is the structural block diagram of charging circuit in different embodiments;
Fig. 2 is the interior structural location schematic diagram of charging circuit in one embodiment;
Fig. 3 is the interior structural location schematic diagram of charging circuit in one embodiment;
Fig. 4 a- Fig. 4 c is the position view of the first protection board in different embodiments;
Fig. 5 a- Fig. 5 c is the position view of the second protection board in different embodiments;
Fig. 6 is the interior structural location schematic diagram of charging circuit in one embodiment;
Fig. 7 is the interior structural location schematic diagram of charging circuit in one embodiment;
Fig. 8 is the interior structural location schematic diagram of charging circuit in one embodiment;
Fig. 9 is the interior structural location schematic diagram of charging circuit in one embodiment;
Figure 10 is the interior structural location schematic diagram of charging circuit in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and It is not used in restriction the application.
It is appreciated that term " first " used in this application, " second " etc. can be used to describe various elements herein, But these elements should not be limited by these terms.These terms are only used to distinguish the first element from the other element.Citing comes It says, in the case where not departing from scope of the present application, the first client can be known as the second client, and similarly, can incite somebody to action Second client is known as the first client.The first client and the second client both client, but it is not same visitor Family end.
It is appreciated that the orientation or positional relationship of the instructions such as term "left", "right" used in this application, "upper", "lower" To be based on the orientation or positional relationship shown in the drawings, merely to description the application and simplified description, rather than indication or suggestion Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this The limitation of application.
Fig. 1 is the structural block diagram of charging circuit in an embodiment.
In the present embodiment, charging circuit 1 be applied to electronic equipment, including charging interface (charging interface is not shown in the figure, Charging interface can be set on first circuit board 10, also can be set in other positions), first circuit board 10, second circuit (specific location of control circuit 50, control circuit 50 is not shown in the figure in plate 20, battery protection circuit 30 and control circuit 50 It can be set on first circuit board 10, also can be set on second circuit board 20, or be arranged in other positions).
Wherein, charging interface connection first circuit board 10 connects for connecting when battery 40 needs to charge with external power supply Receive the charging voltage and electric current that external power supply provides.When charging interface is connect with external charger or external power adapter, The charging voltage and electric current that external power supply provides are the charging of battery 40 by first circuit board 10.Optionally, charging interface includes USB charging interface, USB charging interface are connect by data line with external charger or external power adapter.It needs to illustrate It is that the effect of charging interface is not limited to connect with external charger or external power adapter, it can also be according to charging electricity The specific application environment on road 1 has other function.
Wherein, second circuit board 20 is connect with first circuit board 10.When charging interface and external charger or external power supply When adapter connects, external power supply can be the charging of battery 40 by first circuit board 10 and second circuit board 20.In charging electricity In the practical application on road 1, second circuit board 20 can be used as the mainboard of application product, according to specific application environment, be provided with more A functional module to realize multiple functions, such as is applied when on mobile phone products, and charging valve has can be set in second circuit board 20 Manage module, wireless communication module, central processing unit etc..Wherein, when being provided with functional module on second circuit board 20, pass through electricity Pond 40 provides power supply.
Wherein, battery protection circuit 30 is connect with first circuit board 10, second circuit board 20 and battery 40 respectively.Electricity Pond protection circuit plate 30 be shield to battery 40 and the integrated circuit board of charging/discharging function, including integrated circuit and other The additional device being arranged according to actual needs.Battery 40 by battery protection circuit 30 inputs external power supply or to second circuit Functional module power supply on plate 20.Optionally, the electric connection mode of battery protection circuit 30 and battery 40 is welding, and battery is protected The conductive sheet of protection circuit plate 30 is with the conductive sheet on battery 40 by being welded together.
Wherein, control circuit 50 is used for when charging interface connects external power supply, controls first circuit board 10 and battery is protected The first charging path a conducting between protection circuit plate 30, control first circuit board 10, second circuit board 20 and battery protecting circuit The second charging path b conducting between plate 30, so that charging voltage and electric current charge via the first charging path a and second simultaneously Access b is the charging of battery 40.
Charging circuit common at present, charging interface are generally arranged on first circuit board in the electronic device, battery It is arranged between first circuit board and second circuit board, since battery needs to charge for the functional module of second circuit board, Battery protection circuit is generally arranged at battery on the side of second circuit board, so that the charge path of battery is limited System, charging current need charging interface, second circuit board through first circuit board, then arrive battery protection circuit and fill to battery Electricity, due to the path length of charging, path resistance is usually relatively high, and the path of battery charging is single, when needing large current charge When, it will lead to complete machine fever.And in the present embodiment, due to the control of control circuit 50, so that there are two types of fill the tool of charging circuit 1 Power path shunts charging, can reduce path resistance and optimization charging power consumption.
Specifically, the overcurrent capability of the first charging path a and the second charging path b can be identical or different, can be with It directly charges to battery 40.Optionally, the second charging path b is low current access, and the first charging path a is high current access, To which charging circuit 1 has the access of different overcurrent capabilities.For example, when the maximum fast charge electric current of charging circuit 1 is Imax, can The overcurrent capability of the second charging path b is designed as I by path resistance designmax/ 2, by the mistake of the first charging path a Current capacity is designed as Imax
In one embodiment, control circuit 50 is also used to obtain the temperature information of electronic equipment, in temperature information default When in range, the first charging path a of control conducting and control the second charging path b conducting.In another embodiment, in aforementioned reality On the basis of applying example, control circuit 50 is also used to only control the first charging path a when temperature information is more than preset range and lead It is logical.Wherein, temperature information includes the temperature information of first circuit board 10, second circuit board 20 and battery 40, is believed according to temperature Breath can know the heat condition of electronic equipment entirety.The temperature value of preset range can be set according to the actual situation.
A preset range is arranged according to practical situations in control circuit 50.When electronic equipment is in standby, the The temperature of one circuit board 10 and second circuit board 20 is relatively low, the temperature information that control circuit 50 passes through acquisition electronic equipment Judge temperature information within a preset range, the first charging path a of control conducting and control the second charging path b conducting, to adopt It is charged with the mode of shunting, due to the path in parallel in two paths, whole path resistance is further reduced, and can be reduced whole The temperature of body.When electronic equipment is in big power consumption in application, the temperature of the second circuit board 20 as mainboard is higher, or even generates heat Seriously, control circuit 50 judges that temperature information is more than preset range, only controls the first charging path a conducting, prevents second circuit Temperature is further promoted when plate 20 is due to large current charge;Meanwhile the access that path is shorter, path resistance is low and charging process Heat concentrates on first circuit board 10, can balance whole temperature rise, reaches optimization.
It should be noted that according to the setting situation of 10 functional module of the setting situation of preset range and first circuit board, Control circuit 50 can also be directly using the temperature information of second circuit board 20 as the temperature information of electronic equipment.
In one embodiment, charging circuit further includes switch block, is connect with control circuit 50.
Control circuit 50, for temperature information within a preset range when export the first signal, be more than pre- in temperature information If exporting second signal when range.
Optionally, a preset temperature is arranged in control circuit 50, refers to that temperature value is less than the preset temperature within a preset range, Refer to that temperature value is greater than or equal to the preset temperature beyond preset range.Detecting temperature information less than preset temperature Shi Xiangkai It closes component and exports the first signal, when detecting that temperature information is greater than or equal to preset temperature to the second letter of switch block output Number, so that switch block reduces overall power according to the corresponding charge path of signal conduction, optimizes whole temperature rise, mention Rise user experience.
Optionally, control circuit 50 is arranged on second circuit board 20, including driving unit and control unit, driving unit It is separately connected switch block and control unit, control unit detection circuit operating temperature judges scene (scene according to operating temperature Including standby mode and big power consumption application state), preset temperature value is adjusted, then operating temperature and preset temperature are compared Compared with controlling driving unit according to comparison result and export the first signal or second signal to switch block.In one embodiment, it controls Unit includes MCU (Microcontroller Unit, micro-control unit) and AP (Application Processor, using place Manage device), MCU is separately connected driving unit and AP, and MCU can detecte circuit operating temperature, and feed back to AP, so that AP is according to work Make temperature and judge scene, so as to adjust preset temperature value and feed back to MCU, MCU then carries out operating temperature and preset temperature Compare, driving unit is controlled according to comparison result and exports the first signal or second signal to switch block.Wherein, the I/O port money of AP Source is more, and when every kind of path has multiple accesses, AP can carry out multi-channel control.
Switch block connects control circuit 50, for logical according to the charging of first signal conduction the first charging path a and second The first charging path is only connected according to second signal by road b.To, when switch block receives the first signal, charging circuit 1 There are two types of charge paths for tool, shunt charging, reduce path resistance and optimization charging power consumption;When switch block receives second signal When, charging circuit 1 is using the first charging path a as charge path, since path is shorter, can equally reduce path resistance, optimizes Charge loss.
Wherein, the setting position of switch block is unrestricted, can be set on first circuit board 10, can also set simultaneously It sets on first circuit board 10 and second circuit board 20.For example, switch block can be first switch device K1 and second switch The combination (referring to Fig. 1 b) of the combination (referring to Fig. 1 a) of device K2 or first switch device K1 and third switching device K3, The either combination of first switch device K1, second switch device K2 and third switching device K3 (referring to Fig. 1 c).
Optionally, switch block is arranged on first circuit board 10, according to the first signal conduction first circuit board 10 and electricity The electrical connection of pond protection circuit plate 30 is so that the first charging path a conducting, simultaneously turns on first circuit board 10 and second circuit board 20 electrical connection is so that the second charging path b is connected;First circuit board 10 and second circuit board 20 are disconnected according to second signal Be electrically connected so that the second charging path b is disconnected, simultaneously turn on first circuit board 10 and battery protection circuit 30 be electrically connected with First charging path a conducting.
Optionally, switch block is arranged on first circuit board 10 and second circuit board 20 simultaneously, is led according to the first signal So that the first charging path a is connected, it is electric to simultaneously turn on second with the electrical connection of battery protection circuit 30 for logical first circuit board 10 Electrical connection between road plate 20 and battery protection circuit 30 is so that the second charging path b is connected;The is disconnected according to second signal Being electrically connected between two circuit boards 20 and battery protection circuit 30 simultaneously turns on the first electricity so that the second charging path b disconnection Road plate 10 is with the electrical connection of battery protection circuit 30 so that the first charging path a is connected.
In the above-described embodiments, battery protection circuit 30, can be according to the actual situation there are many optional setting position It is set, such as is configured according to the area occupied of battery 40, length of passage path etc. in actual application environment.
In one embodiment, first circuit board 10, battery 40 and second circuit board 20 are arranged along first direction, electricity Pond 40 and battery protection circuit 30 are arranged in a second direction, and first direction is vertical with second direction.
Optionally, it please assist referring to fig. 2, battery protection circuit 30 is arranged in first circuit board 10 and second circuit board 20 Between, battery protection circuit 30 and battery 40 are arranged side by side, and the path that battery 40 charges includes the first charging path a (in Fig. 2 Solid-line paths, arrow represents current direction) and the second charging path b (dashed path in Fig. 2, arrow represent electric current stream To).By the width of appropriate adjustment battery 40 in a second direction, battery protection circuit 30 and battery 40 is made to be in first The inside intermediate region of circuit board 10 and second circuit board 20, it is possible to reduce to the occupancy of external spatial area.Meanwhile battery 40 Length in a first direction can be adjusted according to the actual setting distance of first circuit board 10 and second circuit board 20, from And guarantees the capacity of battery 40 and be basically unchanged.
Optionally, it please assist referring to Fig. 3, the setting of battery protection circuit 30 is in first circuit board 10, battery 40 and the The same side of two circuit boards 20, the path that battery 40 charges include that (solid-line paths in Fig. 3, arrow represent the first charging path a Current direction) and the second charging path b (dotted line in Fig. 3, arrow represent current direction).The setting of battery protection circuit 30 exists The outside of first circuit board 10, battery 40 and second circuit board 20, so that battery protection circuit 30 will not occupy battery 40 Spatial area, the capacity of battery 40 remains unchanged.
Optionally, in above-described embodiment, battery protection circuit 30 is strip structure, the length of battery protection circuit 30 Spend direction it is parallel with first direction, so as to adjust the length of 30 first direction of battery protection circuit so that its length and The length of battery 40 is close, while reducing the width in its second direction, reduces occupied space.
In another embodiment, battery protection circuit 30 includes the first protection board 301 and the second protection board 302.First Protection board 301 be shield to battery 40 and the integrated circuit board of charge function, including integrated circuit and other according to reality Border needs the additional device being arranged;Second protection board 302 be battery 40 is shielded and is charged, the integrated electricity of discharging function Road plate, including integrated circuit and other additional devices being arranged according to actual needs.By the way that the first protection board 301 and second is protected Backplate 302 is split, and is mutually generated when can charge to avoid charge paths different on same battery protection circuit dry It disturbs;It can also realize the independent control that battery 40 is charged and discharged.
First protection board 301 is arranged in battery 40 close to the side of first circuit board 10 and is electrically connected with first circuit board 10 It connects, so that the access between first circuit board 10 and the first protection board 301 forms the first charging path.Wherein, a- schemes referring to fig. 4 4c, it includes (only showing the part-structure of charging circuit 1 in figure, being used for that battery 40, which is arranged in, close to the side of first circuit board 10 Indicate the positional relationship of the first protection board 301 and battery 40, first circuit board 10, following "left", "right", "upper" are with diagram Orientation is reference): the left side of first circuit board 10 is set, and the right side that first circuit board 10 is arranged in and setting are in the first electricity One of 10 upside of road plate.
Second protection board 302 is arranged in battery 40 close to the side of second circuit board 20 and is electrically connected with second circuit board 20 It connects, so that the access between first circuit board 10, second circuit board 20 and the second protection board 302 forms the second charging path.Its In, referring to Fig. 5 a- Fig. 5 c, it includes (charging circuit 1 only being shown in figure that battery 40, which is arranged in, close to the side of second circuit board 20 Part-structure, is used to indicate the positional relationship of the second protection board 302 with battery 40, second circuit board 20, following " left side ", " right side ", "lower" are reference with illustrated orientation): the left side of second circuit board 20 is set, the right side of second circuit board 20 is set Side or setting are in 20 downside of second circuit board.
Wherein, corresponding diagram 4a- Fig. 4 b, first circuit board 10 and second circuit board 20 are arranged along first direction, the first circuit Plate 10 and the first protection board 301 are arranged in a second direction, and first direction is vertical with second direction.That is, the first protection board 301 is arranged First circuit board 10 left side or the right side of first circuit board 10 is set.Thus, it is possible to reduce by the first protection board 301 externally The occupancy of portion's spatial area, and reduce the charge path length of access between first circuit board 10 and the first protection board 301;Together When, it can guarantee that the capacity of battery 40 is basically unchanged.
Wherein, corresponding diagram 4c, the first protection board 301 are arranged between first circuit board 10 and battery 40.That is, the first protection The upside of first circuit board 10 is arranged in plate 301.Thus, it is possible to the occupancy of 301 pairs of the first protection board external spatial areas is reduced, And reduce the charge path length of access between first circuit board 10 and the first protection board 301;Meanwhile it can be by by battery 40 Length direction along first direction be arranged, guarantee battery 40 capacity be basically unchanged.
Wherein, corresponding diagram 5a- Fig. 5 b, first circuit board 10 and second circuit board 20 are arranged along first direction, second circuit Plate 20 and the second protection board 302 are arranged in a second direction, and first direction is vertical with second direction.That is, the second protection board 302 is arranged Second circuit board 20 left side or the right side of second circuit board 20 is set.Thus, it is possible to reduce by the second protection board 302 externally The occupancy of portion's spatial area, and reduce the charge-discharge circuit electrical path length of access between second circuit board 20 and the second protection board 302;Together When, it can guarantee that the capacity of battery 40 is basically unchanged.
Wherein, corresponding diagram 5c, the second protection board 302 are arranged between second circuit board 20 and battery 40.That is, the second protection The downside of second circuit board 20 is arranged in plate 302.Thus, it is possible to the occupancy of 302 pairs of the second protection board external spatial areas is reduced, And reduce the charge-discharge circuit electrical path length of access between second circuit board 20 and the second protection board 302;Meanwhile it can be by by battery 40 length direction is arranged along first direction, guarantees that the capacity of battery 40 is basically unchanged.
Any embodiment in above-mentioned Fig. 4 a- Fig. 4 c, can be according to the actual situation any one of with Fig. 5 a- Fig. 5 c Embodiment is combined, and forms complete charging circuit 1.Such as according to spatial area size, passage path length etc., carry out group Close setting.For example, please assist referring to Fig. 6, the right side of first circuit board 10 is arranged in the first protection board 301, meanwhile, the second protection The right side of second circuit board 20 is arranged in plate 302;For example, please assist referring to Fig. 7, the first protection board 301 is arranged in the first circuit The left side of plate 10, meanwhile, the right side of second circuit board 20 is arranged in the second protection board 302;For example, please assist referring to Fig. 8, first Protection board 301 is arranged between first circuit board 10 and battery 40, and the second protection board 302 is arranged in second circuit board 20 and battery Between 40;For example, please assist referring to Fig. 9, the right side of first circuit board 10, the second protection board 302 is arranged in the first protection board 301 It is arranged between second circuit board 20 and battery 40.
It should be noted that above-mentioned Fig. 2-Fig. 9, only shows different interplate positional relationships, is not shown between different plates Electrical connection.
It should be noted that battery 40 can also be arranged in battery protection circuit 30 when battery 40 is anisotropic battery It on the notch or groove opened up, is flushed with the surface of battery 40, so that the space for being further reduced battery protection circuit 30 accounts for Use area.
In the above-described embodiments, referring to Figure 10, (Figure 10 is with the setting of the charging circuit 1 and charging interface of Fig. 2 embodiment the For one circuit board 10,104 be charging interface in figure), first circuit board 10 is provided with the first connector 101, second circuit board 20 are provided with the second connector 201, and battery protection circuit 30 connects the first connector 101 by the first conducting wire 102, and battery is protected Protection circuit plate 30 connects the second connector 201 by the second conducting wire 202.To realize battery respectively by connector and conducting wire Protection circuit plate 30 is electrically connected with first circuit board 10, and realization battery protection circuit 30 is electrically connected with second circuit board 20 It connects, safety guides electric current, battery protection circuit 30 and the second electricity between battery protection circuit 30 and first circuit board 10 Electric current between road plate 20 improves the safety and reliability of charging circuit 1.
Optionally, the first conducting wire 102 is charging conductor, and the second conducting wire 202 is charge and discharge electric lead.To first circuit board There is charging path between 10 and battery protection circuit 30, have simultaneously between second circuit board 20 and battery protection circuit 30 Standby charging path and discharge path.Optionally, the first conducting wire 102 and the second conducting wire 202 are FPC winding displacement (Flexible Printed Circuit, flexible circuit board).
Further, referring to Figure 10 (Figure 10 is by taking the charging circuit 1 of Fig. 2 embodiment as an example), first circuit board 10 is provided with Third connector 103, second circuit board 20 are provided with the 4th connector 203, third connector 103 by privates 401 with The connection of 4th connector 203, the 4th connector 203 are connect by the inner conductors of second circuit board 20 with the second connector 201. To realize being electrically connected between first circuit board 10 and second circuit board 20, safety guides first circuit board 10 and second circuit Electric current between plate 20 improves the safety and reliability of charging circuit 1.
In above-described embodiment, charging interface 104, the first connector 101, the first conducting wire 102 and battery protection circuit 30 form the first charging path a (solid-line paths in Figure 10, arrow represent current direction), charging interface 104, third connector 103, privates 401, the 4th connector 203,30 shape of the second connector 201, the second conducting wire 202 and battery protection circuit At the second charging path b (dashed path in Figure 10, arrow represent current direction).
Optionally, above-mentioned connector is BTB connector (Board To Board, board to board connector).
Optionally, an at least first branch and an at least second branch, charging interface can be drawn from charging interface 104 104 are connect by the first branch with the first connector 101, and charging interface 104 is connected by second branch and third connector 103 It connects.First circuit board 10 may be implemented by an at least first branch and at least a second branch for first circuit board 10 and battery is protected Multiple accesses and first circuit board 10, the second circuit board 20 and battery 40 of charge path protect electricity between protection circuit plate 30 Multiple accesses of charge path between road repeatedly shunt charging it is thus possible to realize, further decrease power consumption;Meanwhile when wherein One access when something goes wrong, will not influence the whole charging situation of battery 40, guarantee the normal operation that battery 40 charges.
Optionally, switch block is provided in the first branch.Specifically, switch block includes first switch device K1.The One switching device K1 is arranged on first circuit board 10, for the first branch to be connected according to the first signal or second signal, passes through First switch device K1 can control the on state of access between first circuit board 10 and battery protection circuit 30.First opens Closing device K1 can be switching tube, is connected according to the first signal or second signal.
Optionally, switch block is provided in second branch.Specifically, switch block includes second switch device K2.The Two switching device K2 are arranged on first circuit board 10, for being broken according to second signal according to the first signal conduction second branch Second branch is opened, first circuit board 10, second circuit board 20 and battery protecting circuit can control by second switch device K2 The state that is turned on or off of access between plate 30.Second switch device K2 can be switching tube, according to the first signal conduction, according to Second signal cut-off.
It should be noted that first switch device and second switch device also can be merged into same unit, it is for example, double To switch, to realize different handoff functionalities.
Optionally, switch block includes third switching device K3.Third switching device K3 is arranged on second circuit board 20, For being electrically connected according to the 4th connector 203 of the first signal conduction and the second connector 201, the 4th is disconnected according to second signal The electrical connection that connector 203 is connect with the second connector 201, by third switching device K3 can control first circuit board 10, The state that is turned on or off of access between second circuit board 20 and battery protection circuit 30.Third switching device K3 can be out Guan Guan corresponds on or off according to the first signal or second signal.
Charging circuit 1 provided in this embodiment, including charging interface, first circuit board 10, second circuit board 20, battery are protected Protection circuit plate 30 and control circuit 50, form the first charging path between first circuit board 10 and battery protection circuit 30, The second charging path is formed between first circuit board 10, second circuit board 20 and battery protection circuit 30.Control circuit 50 exists When charging interface is connect with external power supply, control the first charging path and the second charging path conducting so that charging voltage and Electric current is simultaneously the charging of battery 40 via the first charging path and the second charging path, so that charging circuit is by the way of shunting Charging, whole path resistance further reduces, and overall power is optimized, reduce risk under high current working condition and Loss improves safety and reliability.
The present embodiment additionally provides a kind of electronic equipment, which includes charging circuit 1 described in embodiment as above And battery.Wherein, battery can be to the other function module for power supply of electronic equipment;The overall occupancy face of charging circuit 1 and battery Product can be adjusted according to the practical situations of electronic equipment.Since charging circuit 1 can reduce path resistance, reduce big Risk and loss under current work state, thus electronic equipment is in application process, it can be according to application scenarios and work temperature The path of degree optimization high current, optimizes complete machine temperature rise, has stronger safety and reliability.
It should be noted that the electronic equipment in above-described embodiment, including but not limited to mobile phone, tablet computer, notebook Any product and component with internal battery such as computer, smartwatch, intelligent sound box.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously The limitation to the application the scope of the patents therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the concept of this application, various modifications and improvements can be made, these belong to the guarantor of the application Protect range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.

Claims (17)

1. a kind of charging circuit, it is applied to electronic equipment, which is characterized in that the charging circuit includes:
Charging interface receives the charging voltage and electric current that the external power supply provides for connecting with external power supply;
First circuit board is connect with the charging interface;
Second circuit board is connect with the first circuit board;
Battery protection circuit is connect with the first circuit board, the second circuit board and battery respectively;
Control circuit controls the first circuit board and described for when the charging interface is connect with the external power supply The first charging path conducting between battery protection circuit, and the control first circuit board, the second circuit board and The second charging path conducting between the battery protection circuit, so that the charging voltage and electric current are simultaneously via described the One charging path and second charging path are battery charging.
2. charging circuit according to claim 1, which is characterized in that the control circuit is also used to obtain the electronics The temperature information of equipment, the temperature information within a preset range when, control first charging path conducting and control institute State the conducting of the second charging path.
3. charging circuit according to claim 2, which is characterized in that the control circuit is also used to believe in the temperature When breath is more than the preset range, the first charging path conducting is only controlled.
4. charging circuit according to claim 3, which is characterized in that the charging circuit further includes switch block, with institute State control circuit connection;
The control circuit, for the temperature information within a preset range when export the first signal, in the temperature information Second signal is exported when more than the preset range;
The switch block is used for the first charging path according to the first signal conduction and second charging path, according to First charging path is only connected in second signal.
5. charging circuit according to claim 1-4, which is characterized in that the first circuit board, the battery And the second circuit board is arranged along first direction, the battery and the battery protection circuit arrange in a second direction, The first direction is vertical with the second direction.
6. charging circuit according to claim 5, which is characterized in that the battery protection circuit is arranged described first Between circuit board and the second circuit board.
7. charging circuit according to claim 5, which is characterized in that the battery protection circuit is arranged described first The same side of circuit board, the battery and the second circuit board.
8. charging circuit according to claim 5, which is characterized in that the battery protection circuit is strip structure, The length direction of the battery protection circuit is parallel with the first direction.
9. charging circuit according to claim 1-4, which is characterized in that the battery protection circuit includes:
First protection board, first protection board are arranged in the battery close to the side of the first circuit board and are electrically connected respectively Connect the first circuit board and the battery;
Second protection board, second protection board are arranged in the battery close to the side of the second circuit board and are electrically connected respectively Connect the second circuit board and the battery.
10. charging circuit according to claim 9, which is characterized in that the first circuit board, the battery and described Two circuit boards are arranged along first direction, and arrangement is arranged in the first circuit board and first protection board in a second direction, described First direction is vertical with the second direction;Or
First protection board is arranged between the first circuit board and the battery.
11. charging circuit according to claim 9, which is characterized in that the first circuit board, the battery and described Two circuit boards are arranged along first direction, and the second circuit board and second protection board arrange in a second direction, and described first Direction is vertical with the second direction;Or
Second protection board is arranged between the second circuit board and the battery.
12. charging circuit according to claim 4, which is characterized in that the first circuit board is provided with the first connector, The second circuit board is provided with the second connector, and the battery protection circuit connects first connection by the first conducting wire Device, the battery protection circuit connect second connector by the second conducting wire.
13. charging circuit according to claim 12, which is characterized in that the first circuit board is provided with third connection Device, the second circuit board are provided with the 4th connector, and the third connector passes through privates and the 4th connector Connection, the 4th connector are connect with second connector.
14. charging circuit according to claim 13, which is characterized in that draw at least one first from the charging interface Road and at least a second branch, the charging interface are connect by the first branch with first connector, the charging interface It is connect by second branch with the third connector.
15. charging circuit according to claim 14, which is characterized in that the switch block includes:
First switch device is arranged on the first circuit board, for according to the first signal or second signal conducting described the One branch.
16. charging circuit according to claim 14, which is characterized in that the switch block includes:
Second switch device is arranged on the first circuit board, is used for the second branch according to the first signal conduction, according to Second signal disconnects the second branch;Or
Third switching device, be arranged on the second circuit board, for the 4th connector according to the first signal conduction with The electrical connection of second connector disconnects the electricity that the 4th connector is connect with second connector according to second signal Connection.
17. a kind of electronic equipment, which is characterized in that the electronic equipment includes such as the described in any item chargings of claim 1-16 Circuit and battery.
CN201910732696.XA 2019-08-09 2019-08-09 Charging circuit and electronic equipment CN110474391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910732696.XA CN110474391A (en) 2019-08-09 2019-08-09 Charging circuit and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910732696.XA CN110474391A (en) 2019-08-09 2019-08-09 Charging circuit and electronic equipment

Publications (1)

Publication Number Publication Date
CN110474391A true CN110474391A (en) 2019-11-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910732696.XA CN110474391A (en) 2019-08-09 2019-08-09 Charging circuit and electronic equipment

Country Status (1)

Country Link
CN (1) CN110474391A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201690242U (en) * 2009-12-03 2010-12-29 国基电子(上海)有限公司 Double-mode charging circuit
CN201887500U (en) * 2010-11-12 2011-06-29 立锜科技股份有限公司 Charging circuit
CN105656141A (en) * 2016-02-29 2016-06-08 宇龙计算机通信科技(深圳)有限公司 Handheld terminal
CN106160105A (en) * 2016-07-29 2016-11-23 维沃移动通信有限公司 The charging method of a kind of mobile terminal and mobile terminal
CN106786978A (en) * 2017-01-24 2017-05-31 维沃移动通信有限公司 A kind of charging system and mobile terminal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201690242U (en) * 2009-12-03 2010-12-29 国基电子(上海)有限公司 Double-mode charging circuit
CN201887500U (en) * 2010-11-12 2011-06-29 立锜科技股份有限公司 Charging circuit
CN105656141A (en) * 2016-02-29 2016-06-08 宇龙计算机通信科技(深圳)有限公司 Handheld terminal
CN106160105A (en) * 2016-07-29 2016-11-23 维沃移动通信有限公司 The charging method of a kind of mobile terminal and mobile terminal
CN106786978A (en) * 2017-01-24 2017-05-31 维沃移动通信有限公司 A kind of charging system and mobile terminal

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