Utility model content
The purpose of this utility model is to provide a kind of safe and reliable battery packs for the charging of the external equipments such as mobile phone.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of battery pack comprising: shell, receivingThe first battery pack and the second battery pack, circuit board and main power source output interface in the shell, first battery packAnd second battery pack can serial or parallel connection, and then by main power source output interface export two kinds of operating voltages, the battery pack is alsoMechanical switch including expansion of power supply output interface and between the first battery pack and the second battery pack, the mechanical switch controlIt makes and powers after the first battery pack is connected with the second battery pack for expansion of power supply output interface.
As the further improved technical solution of the utility model, the expansion of power supply output interface and first batteryConversion circuit is equipped between group and the second battery pack, for providing the supply voltage of expansion of power supply output interface.
As the further improved technical solution of the utility model, the mechanical switch includes that the covering expansion of power supply is defeatedThe first terminal that the cover board of outgoing interface and both ends different with the first battery pack and the second battery pack polarity respectively are electrically connectedAnd Second terminal, the connection and disconnection of the first terminal and Second terminal are controlled by the sliding of the cover board.
As the further improved technical solution of the utility model, the first terminal is fixed on the cover board, and described secondTerminal is fixed on the circuit board.
As the further improved technical solution of the utility model, the first terminal and the Second terminal are each attached toOn the circuit board.
As the further improved technical solution of the utility model, the cover board is equipped with conducting end, and the conducting end is usedIt is electrically connected in by the first terminal and the Second terminal.
As the further improved technical solution of the utility model, the first terminal and Second terminal are set to microswitchOn, the cover board is equipped with triggering end, and the triggering end, which touches the microswitch, connects first terminal with Second terminal.
As the further improved technical solution of the utility model, the shell is equipped with aperture, the tapping installationThere is limit module, the cover board is set in the limit module and slides in limit module.
As the further improved technical solution of the utility model, it is additionally provided with elastic element in the limit module, it is describedElastic element one end is connected with the cover board, and the other end is connected with the limit module, and the cover board slides under external force,The expansion of power supply output interface exposes；The cover board resets under the action of elastic element, covers the expansion of power supply outputInterface.
As the further improved technical solution of the utility model, the expansion of power supply output interface is USB interface.
From the above technical scheme, the utility model is by being changed to mechanical switch for single-chip microcontroller control switch, and passes throughThe sliding of cover board manually controls the folding of mechanical switch, controls expansion of power supply output interface and external equipment such as mobile phone etc. with thisConnection, so set, making battery pack safe and reliable when charging to external equipment.
Specific embodiment
In order to keep the purpose of this utility model, technical solution and advantage clearer, with reference to the accompanying drawing and it is embodiedThe utility model is described in detail in example.
It please join shown in Fig. 1 to Fig. 3, the utility model provides a kind of battery pack 100, including shell 1, is contained in shell 1Battery pack 2, with battery pack 2 be electrically connected circuit board 3, with circuit board 3 be electrically connected main power source output interface 6 and extensionPower output interface 4；Wherein shell includes upper housing 11 and lower case 12, and battery pack 2 includes the first battery pack 21 and the second electricityPond group 22 is equipped with mechanical switch 5 between the first battery pack 21 and the second battery pack 22.
First battery pack 21 and the second battery pack 22 can serial or parallel connection, and then pass through the output of main power source output interface 6 twoKind operating voltage, for the power tool power supply to different demands.When battery pack 100 is not connect with power tool, the first electricityPond group 21 and the second battery pack 22 can connect and be filled by 4 output voltage of expansion of power supply output interface for external equipments such as mobile phonesElectricity.
Please join shown in Fig. 3, battery pack 100 be expansion of power supply output interface 4 power circuit include: the first battery pack 21,Second battery pack 22, mechanical switch 5, conversion circuit 7 and expansion of power supply output interface 4.Wherein, mechanical switch 5 is set to the first electricityBetween pond group 21 and the different electrode of 22 polarity of the second battery pack, battery pack 100 does not charge at itself and does not supply to power toolIn the case where electricity, mechanical switch 5 by 22 groups of the first battery pack 21 and the second battery be together in series realization to expansion of power supply output connectThe power supply of mouth 4.The effect of conversion circuit 7 is that the first battery pack 21 and the second battery pack 22, which are provided in series voltage, to be converted into expanding4 required voltage of power output interface is opened up, for the charging of corresponding external equipment.
Please join shown in Fig. 5 to Fig. 7, mechanical switch 5 include cover expansion of power supply output interface 4 cover board 51 and respectively withThe first terminal 52 and Second terminal 53 that first battery pack 21 electrode different with 22 polarity of the second battery pack connects, pass through cover board51 sliding controls the connection and disconnection of first terminal 52 Yu Second terminal 53.
First terminal 52 and Second terminal 53 are connected by circuit board 3 and the first battery pack 21 and the second battery pack 22 respectivelyIt connects.Specifically, Second terminal 53 includes body part (not labeled) and the holding section 531 extended by body part, first terminal52 be the inserted sheet being arranged in below cover board 51, and cover board 51 is slided along the front-rear direction of battery pack 100, the top of first terminal 52It is caught in holding section 531, the contact of first terminal 52 with Second terminal 53 is completed with this, the end of first terminal 52 is equipped with terminals(not labeled), for being electrical connected with circuit board 3.In other embodiments, first terminal 52 and Second terminal 53 can be setShape for other cooperations not limits as long as the connection of first terminal 52 and Second terminal 53 may be implemented.
1 surface of shell offers the aperture (not labeled) of receiving expansion of power supply output interface 4, it is preferred that tapping installationHave limit module 8, please join shown in Fig. 4, limit module 8 include body part 81, on body part accommodate cover board groove 82 withAnd it is opened in the through-hole 83 that 82 lower section of groove is matched with expansion of power supply output interface 4, cover board 51 is in limit module 8 along levelDirection is mobile, and expansion of power supply output interface 4 is exposed or covered.
It is additionally provided with elastic element 9 between cover board 51 and limit module 8,9 one end of elastic element is connected with the cover board 51, separatelyOne end is connected with limit module 8, and cover board 51 is open under external force, and expansion of power supply output interface 4 exposes；Cover board 51 is in bulletIt is resetted under the action of property element 9, covers the expansion of power supply output interface 4.Elastic element 9 is preferably torque spring.
During battery pack 100 is external charging, cover board 51 is open under the effect of external force, and external equipment insertion is expandedExhibition power output interface 4 charges；After charging complete, external equipment is extracted, the rebound effect of elastic element 9 answers cover board 51Position, covers expansion of power supply output interface 4.
It should be noted that expansion of power supply output interface 4 is not limited solely to the position indicated in Fig. 1, can be set in electricityAny position appropriate of pond packet 100.And the quantity of expansion of power supply output interface 4 is one or more, and quantity is refusedLimitation.Expansion of power supply output interface 4 can be USB interface, or other charging interfaces also not limit herein.
It please join shown in Fig. 8 to Figure 10, be another embodiment of the mechanical switch of the utility model battery pack, whereinCircuit board 3 ', expansion of power supply output interface 4 ', position limiting structure 8 ', the other structures of elastic component 9 ' and battery pack and above-mentioned batteryWrap 100 roughly the same, the distinctive points of the two are: the specific structure of mechanical switch is different.It following description part will be main rightDistinguishing characteristics is described in detail, and same characteristic features are not described in detail.
Mechanical switch includes cover board 51 ', the conducting end 54 ' on cover board and is electrically connected respectively with circuit board 3 'First terminal 52 ' and Second terminal 53 ', first terminal 52 ' and Second terminal 53 ', which are arranged independently of one another and are in, separates shapeState, and connect respectively by the electrode different with the first battery pack and the second battery pack polarity of circuit board 3 '.First terminal 52 'The distance between Second terminal 53 ' no more than conducting end 54 ' thickness (so that conducting end 54 ' can simultaneously and first terminal52 ' contact with Second terminal 53 '), the material of conducting end 54 ' is conductive material, and cover board 51 ' is pushed to make conducting end 54 ' to firstTerminal 52 ' and 53 ' direction of Second terminal are mobile, and conducting end 54 ' is inserted into the gap between first terminal 52 ' and Second terminal 53 'And be in contact with it, mechanical switch conducting, battery pack 2 is powered to expansion of power supply output interface 4.In other embodiments, conducting end54 ' can be set to other shapes, as long as the connection of first terminal 52 ' He Second terminal 53 ' may be implemented, not limitSystem.
It please join shown in Figure 11 and Figure 12, be the third embodiment of the utility model battery pack, wherein circuit board 3 ", extensionPower output interface 4 ", position limiting structure 8 ", elastic component 9 " and battery pack other structures and above-mentioned battery pack 100 substantially phaseTogether, the distinctive points of the two are: the specific structure of mechanical switch is different.Following description part will mainly carry out distinguishing characteristicsDetailed description, same characteristic features are not described in detail.
Mechanical switch it include cover board 51 ", be set to cover board 51 " on triggering end 54 " and with circuit board 3 " be electrically connectedMicroswitch 55 ", microswitch 55 " include Switch main body and be housed in Switch main body and with circuit board 3 " be electrically connectedFirst terminal (not labeled) and Second terminal (not labeled), first terminal and Second terminal pass through circuit board 3 " and first respectivelyThe battery pack electrode different with the second battery pack polarity connects.Microswitch 55 " further includes the contact being arranged on Switch main body(not labeled) and rectangular contact (not labeled), one end of contact are fixed on Switch main body, and one end is free end；Contact positionInside in contact and the position close to contact fixing end, contact touch the contact of microswitch 55 " repeatedly in a manner of lever,It is provided between contact and Switch main body elastic component (not shown), contact presses lower contact, first terminal and the by triggering end 54 "Two-terminal conducting；Contact leaves contact under the action of the elastic member, and non-triggering state, first terminal and Second terminal are restored in contactIt disconnects.Triggering end 54 " is preferably plate, facilitates and pushes contact rotation.
The beneficial effects of the utility model have: by by the single-chip microcontroller control switch in battery pack replace with mechanical switch comeThe folding of control circuit, the short circuit for preventing single-chip microcontroller erroneous judgement from causing improve the safety that battery pack is external equipment power supplyProperty.
It is used herein such as "upper", "lower", "left", "right", "front", "rear", representation space relative position termIt is to describe relationship of the feature relative to another feature as shown in the drawings for the purpose convenient for explanation.It can manageSolution, according to the difference of product placement position, the term of relative space position can be intended to include other than orientation as shown in the figureDifferent direction, should not be interpreted as limitations on claims.In addition, term " first ", " second " are only used for description mesh, it is not understood to indicate or imply relative importance or implicitly indicates the quantity of indicated technical characteristic.
In addition, above embodiments are merely to illustrate the utility model and not limit technical side described in the utility modelCase, understanding of this description should be based on persons of ordinary skill in the field, although this specification is referring to above-mentionedEmbodiment has been carried out detailed description to the utility model, still, those skilled in the art should understand that, affiliated skillThe technical staff in art field still can be modified or replaced equivalently the utility model, and all not depart from this practical newThe technical solution and its improvement of the spirit and scope of type, should all cover in the scope of the claims of the utility model.