CN106099863B - A kind of constant pressure protection structure member with USB interface and the secondary cell using it - Google Patents

Abstract

The present invention provides a kind of, and the constant pressure with USB interface protects structure member, including output terminal, sleeve, pcb board and support base, pcb board to be placed in sleeve, and output terminal is mounted on sleeve top, and support base is mounted on sleeve bottom.It additionally provides in the mating secondary cell for being fitted into a kind of constant pressure protection structure member with USB interface of the invention in the open end of shell; secondary battery construction of the invention is novel, easy to make; it can be not required to external charger, can be charged directly and stop voltage exports as needed, meet the market demand.

Description

A kind of constant pressure protection structure member with USB interface and the secondary cell using it

Technical field

The present invention relates to a kind of constant pressure protection structure member and battery, in particular to a kind of constant pressure protection with USB interface Structure member and the secondary cell for using it.

Background technique

With the development of secondary cell technology, the performance of secondary cell has a quick promotion, while its cost is also substantially Degree decline, especially the secondary cell high-energy density having, the characteristics of can be recycled, thus obtained more and more extensive Using.Such as the rechargeable lithium ion batteries in secondary cell, have become mobile phone, laptop, camera mainly for Battery, and in traditional application field such as remote controler, flashlight, toy etc. of many one-shot batteries, secondary cell also by Step is substituted by one-shot battery.

But secondary cell still has inconvenience compared with one-shot battery in use.One-shot battery does not need to fill Electricity, and secondary cell needs to be charged with dedicated charger, while in order to keep normal performance, often secondary cell needs Charging process and electric discharge use process are managed and are protected.The voltage rating and secondary cell of one-shot battery also tend to not Together, such as the voltage rating of NCM type lithium ion secondary battery is 3.6V, and common alkaline zinc-manganese dioxide cell voltage rating is 1.5V, so if secondary cell without voltage management, is the electricity consumption that cannot be directly applied to one-shot battery under normal circumstances In equipment, electrical equipment otherwise may be damaged.

Under normal conditions, secondary cell substitution one-shot battery carry out using, it is necessary first to secondary cell is packed, Charging and discharging protection device, voltage management device is arranged in secondary cell shell, is able to satisfy the use of one-shot battery equipment to form one It is required that product.But there are technologies of the package that complicated, at high cost, battery packages product final shape is difficult to control for this method The problems such as.This seriously constrains secondary cell and uses in the popularization of numerous application fields of one-shot battery and substitution.

In addition, the use of secondary cell, it is necessary to configure independent dedicated charger, charger is mixed to be easy to cause safe thing Therefore.Carrying and using for charger seems not convenient enough.

Therefore, how by the requirement of the performance characteristics combination one-shot battery of secondary cell, secondary cell battery is filled Fulgurite reason, protection, one-shot battery contour structures, one-shot battery use demand plan as a whole optimization, take into account cost and efficiency, propose one New battery structure component solution, is just very necessary.

Summary of the invention

For the defects in the prior art, the present invention is intended to provide a kind of constant pressure with USB interface protects structure member, no It needs external charger, can charge directly, battery may be implemented in the output electric energy course of work, can remain constant Output voltage, while including charge protection, discharge prevention, overcurrent protection, short-circuit protection and structure limited support, additionally provide A kind of secondary cell of the constant pressure protection structure member using this kind with USB interface.The present invention is realized by following scheme：

A kind of constant pressure protection structure member with USB interface, including output terminal, sleeve, pcb board and support base, institute The structure that sleeve is bottom end opening, top closure and inner hollow is stated, opens up output terminal mounting hole on the top of the sleeve, The sleeve is divided into exposed parts and assembled portion up and down, and the outer diameter of assembled portion is smaller than the outer diameter of exposed parts and assembled portion It complements one another with a matched shell chimeric, offers through-hole in the side of sleeve exposed parts；Offered in support base to A few perforation；The pcb board include first substrate, the second substrate, USB interface device, protection circuit, constant voltage outputting circuit and On the first substrate, the USB interface device is arranged second for charging circuit, the protection circuit and constant voltage outputting circuit setting On substrate and USB interface device be serially connected in charging circuit both ends formed loop, USB interface device be located at first substrate and Between the second substrate, it is connected between the first substrate and the second substrate；The charging circuit is arranged in the second substrate；Institute State in first substrate or/and the second substrate be arranged positive pole ear tie point B+, negative lug tie point B-, cathode output end L+ and Cathode output end L-；The pcb board is placed in sleeve inner, the power connector end face sleeve exposed parts one of USB interface device The size of the through-hole of side, through-hole matches with the size of the power connector end of USB interface device, and support base nesting is mounted on set At the open end of cylinder, output terminal is mounted on output terminal mounting hole and connect with the cathode output end L+ of pcb board.Practical system When making, positive pole ear tie point B+, negative lug tie point B-, cathode output end L+ and cathode output end L- generally pass through pad It realizes.USB interface device is generally divided into two kinds of big mouth, osculum specifications, it is contemplated that and versatility is general to use and the charging on mobile phone Interface the same osculum USB interface device, that is, MicroUSB is provided with 1 foot, 2 feet, 3 feet, 4 on the power connector end of MicroUSB Foot and 5 feet, wherein 1 foot and 2 feet are defined as positive terminal, 4 feet and 5 feet are defined as negative pole end.

The protection circuit includes protection IC, first resistor R1, first capacitor device C1 and the second capacitor C2, protects IC's First capacitor C1 is concatenated between vdd terminal mouth and the port GND, is protected and is concatenated the second capacitor C2 between the port GND of IC and the port VT； Two ports VM of protection IC are connected with cathode output end L-, and one end of first resistor R1 is connected to the vdd terminal mouth of protection IC Positive pole ear tie point B+ is connected with the other end of the connection of first capacitor C1, first resistor R1；Protect the port GND of IC It is connected to negative lug tie point B-.

The constant voltage outputting circuit includes electric pressure converter, inductance, second resistance R2,3rd resistor R3, third capacitor C3, the 4th capacitor C4 and the 5th capacitor C5, one end of inductance are connected with the port SW of electric pressure converter, inductance it is another End connection cathode output end L+；Third capacitor C3, electric pressure converter are concatenated between the port VIN of electric pressure converter and the port GND The port VIN connect positive pole ear tie point B+ with the connection third capacitor C3；The port FB of electric pressure converter and anode are defeated The 4th capacitor C4 is concatenated between outlet L+, 3rd resistor R3 is attempted by the both ends of the 4th capacitor C4, the electricity of the 5th capacitor C5 and second Resistance R2 concatenation after be attempted by the 4th capacitor C4 both ends and second resistance R2 be serially connected in electric pressure converter the port FB and cathode it is defeated Between outlet L-；The port GND of electric pressure converter is connected with cathode output end L-；The port EN of electric pressure converter and positive pole Ear tie point B+ is connected.

The charging circuit includes charging IC, diode, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 6th electricity One end connection charging IC of container C6 and the 7th capacitor C7, the 4th resistance R4 /port CHRG, the other end of the 4th resistance R4 Connect the N foot of diode, the port VCC of one end connection charging IC of the 5th resistance R5, the other end of the 5th resistance R5 and two poles The P foot of pipe is connected with the positive terminal of USB interface device again after being connected；One end connection charging IC's of 6th capacitor C6 The port BAT, the port PROG of one end connection charging IC of the 6th resistance R6, the VCC of one end connection charging IC of the 7th capacitor C7 Port, the other end of the 6th capacitor C6, the port GND for the IC that charges, the 6th resistance R6 the other end and the 7th capacitor C7 it is another One end is connected with the negative pole end of cathode output end L-, USB interface device respectively again after being connected；The end the BAT connection of charging IC Positive pole ear tie point B+.

Can be according to when actual fabrication the case where, welds each component on charging circuit, constant voltage outputting circuit, protection circuit Connect the two sides in corresponding first substrate or the second substrate.

Further, opposite with the first substrate of pcb board, the second substrate and USB interface device on the sleeve lining It is arranged fluted on position, the width of the groove is greater than the thickness of corresponding first substrate, the second substrate or USB interface device Size is spent, the depth of the groove is 0.2~1.0mm.Sometimes in view of easy to make, first base of the same side can will be located at Plate, the second substrate and the corresponding groove of USB interface device merge into a groove, the width h of the groove meet h3+ (δ 1+ δ 2)+ 0.05≤h≤h3+ (δ 1+ δ 2)+0.25, wherein δ 1 is the thickness of first substrate, and δ 2 is the thickness of the second substrate, and h3 is the first base The distance between plate and the second substrate, unit are mm；And the corresponding recess width of the first substrate of the other side, the second substrate It should not be too large.Under normal circumstances, first substrate and the second substrate can select the substrate of same thickness, it is contemplated that actual conditions, the One substrate and the thickness of the second substrate are typically chosen in 0.6~1.2mm, and substrate thickness is too thick, occupy sleeve interior space too More, substrate thickness is too thin, and intensity is insufficient thus can not effectively support output terminal.And the width of groove is configured, it can keep away Exempt from the problem of pcb board installed loose (width is excessive) or tension (width is too small).

Further, several reinforcing ribs, the lower end of the reinforcing rib and the sleeve are provided on the sleeve lining There are the distances for being not less than support base thickness between open end.

Further, for the support base with a thickness of 0.5~3.0mm, thickness is too thin, cannot effectively support pcb board and hold By the squeeze pressure that output terminal transmits, being easy to produce deformation causes output terminal to be recessed, and thickness is too thick, reduces pcb board The effective height size of first substrate, the second substrate, the difficulty for causing electronic component to be laid out.Support base selects thermoplasticity work Engineering plastics production, Rockwell hardness (M scale) are 75~100, material ABS, POM, PC, AS, ABS+20%GF, PC+20% GF, PA66+30%GF, PBT+30%GF, PMMA etc..

In view of the mating compactness of the assembled portion of battery case and sleeve, the assembled portion of the sleeve and institute are mating The height of the mutually nested part of shell is 2.0~5.0mm, and the outside diameter d 1 of assembled portion meets d-0.2≤d1≤d, and wherein d is institute The internal diameter of mating shell.

In order to facilitate the connection of the cathode output end on output terminal and pcb board, the bottom of the output terminal is provided with Pin, in the production process, the anode that can be generally arranged in two pins, the pin and first substrate or the second substrate export End L+ is connected.Further, pin thickness is 0.2~0.6mm, and pin widths are 0.4~1.5mm, entire output terminal Material is the low charcoal steel of nickel plating or nickel.The setting of pin thickness and width fully takes into account output terminal tolerance shock and vibration Reliability requirement, and good soldering connection can be carried out with pcb board.

Support base and the sleeve chimeric mode that complements one another are a variety of, it is contemplated that operation convenience, the support base with The sleeve is mating chimeric by snap, is symmetrically arranged at least a pair of of buckle in the edge of the support base, Sleeve opposite position offers card hole, and buckle complements one another chimeric with card hole.It, can in view of chimeric compactness and easy to operate According to actual needs, it is symmetrical arranged protrusion part at the edge of support base, and buckles and is then symmetricly set on protrusion part, and Sleeve inner can also carry out appropriate variation adjustment according to the shape of support base.

Sometimes further battery makes for convenience, and positive pole ear lead-out wire can be welded on positive pole ear tie point, It is welded with negative lug lead-out wire on negative lug tie point, negative output line is welded on cathode output end.It is supporting Three perforation are set on pedestal, are respectively used to positive pole ear lead-out wire or positive pole ear, negative lug lead-out wire or negative lug It is passed through with negative output line.To meet convenience requirement, prevent perforated longer is too small or width is too small from positive and negative electrode tab being caused to draw Outlet or output line cannot pass through, the perforation of positive pole ear lead-out wire, the perforation of negative lug lead-out wire and negative output line perforation Length L1 is all satisfied：W+0.20≤L1≤W+2.00, width W1 are all satisfied：δ+0.20≤W1≤δ+1.00, wherein δ is corresponding Output line or tab or tab lead-out wire thickness, W is the width of corresponding output line or tab or tab lead-out wire, single Position is mm.

The sleeve is typically chosen plastic material, and the outer diameter of exposed parts can be designed tune according to battery request It is whole.Drop performance is vibrated to meet battery, it is desirable that plastic sleeve need to have good flexibility；It is simultaneously to meet subsequent plastic sheath Wound packages is matched as inside battery steel shell, needed that shell is squeezed to the wall surface one for buckling into the assembled portion of plastic sleeve by indentation process Depthkeeping degree, to realize that shell protects being reliably connected for structure member with the constant pressure with USB interface, it is desirable that plastic sleeve has certain Hardness.In view of above-mentioned factor, sleeve selects thermoplastic engineering plastic production, and Rockwell hardness (M scale) is 75~100, Material is ABS, POM, PC, AS, ABS+20%GF, PC+20%GF, PA66+30%GF, PBT+30%GF, PMMA etc..

A kind of secondary cell, including shell and battery core, battery core are placed in shell, the open end of shell it is mating it is chimeric just like A kind of upper constant pressure with USB interface protects structure member, and the positive pole ear of the battery core passes through the perforation of support base It is connected on the positive pole ear tie point in first substrate or the second substrate, the negative lug of the battery core passes through support base It perforates on the negative lug tie point that is connected in first substrate or the second substrate, outer casing inner wall and first substrate or the second substrate On cathode output end L- between be connected by passing through the output line of perforation of support base；The shell and as described above It is realized and is fixed by impression continuously or discontinuously in a kind of constant pressure protection structure member with the USB interface part that is nested.Wherein, electric Core is the single battery made.

The depth of the impression is 0.03~0.50mm, and the width of impression maximum is 0.1~1.5mm.The setting of impression, Realize the whole cooperation and position immobilization with shell of constant pressure protection structure member with USB interface.Enclosure material is generally Metal has higher hardness and strength；Plastic sleeve material is thermoplastic engineering plastic, Rockwell hardness (M scale) is 75~ 100；After the assembled portion and shell of plastic sleeve complete cooperation, stamping device is squeezed via outer shell outer wall to center, and shell becomes Shape generates protrusion to center, and plastic sleeve is squeezed by the shell of corresponding position and generates recessed portion, finally just by shell and modeling Material sleeve realizes reliable connection, and the constant pressure protection structure member with USB interface can be resistant to the various use environments of battery It does not generate and falls off or deform.

Compared with prior art, a kind of built-in constant pressure of the invention protects structure member, has the following advantages that：

(1) multifunctional unit：It is integrated with battery USB charge function, charging process defencive function, discharge process protection function Energy, the support of constant cell voltage output function, battery structure and outer dimension are realized, have taken into account the charging of battery itself well It is required that, demand for safety protection, electrical equipment the output characteristics of battery is required, the structural requirement of battery itself；

(2) simple and reliable for structure：Integrally formed plastic sleeve makes total component have good support strength, The connection and position immobilization for realizing the two that the setting of structure member and shell engaging portion impression can be convenient, both realize electricity The electrochemical function property requirements in pond, and the architectural characteristic demand of battery is realized well, thus have better environment suitable With property, safety and reliability；

(3) economized of cell adjunct component occupied space and the high capacity of battery may be implemented.A kind of band USB interface Constant pressure protect structure member, collection multiple functions are a global facility, by the requirement of the unified satisfaction of multiple functions, are finished Optimization design and layout in terms of structure compare more common split type battery charging circuit plate, charge and discharge protecting wiring board, battery Constant voltage output wiring board, battery structure support component integration volume, and the constant pressure protection structure member of the invention with USB interface can With USB charging, charge and discharge protecting, constant voltage output, the body of the constant pressure protection structure member used in secondary cell with USB interface Product will be greatly reduced, and which achieves the economizeds of cell adjunct component occupied space, have more spaces that can be used to provide To the assembly of active material, to be advantageously implemented the high capacity of battery.

(4) using a kind of secondary cell of constant pressure protection structure member production with USB interface of the invention, structure is new Grain husk, production are simple.Secondary cell of the invention reduces the processing step of battery assembly, will especially realize that same function produces Welding times needed for product reduce more than half, and entire assembling process is simple and efficient, and can reduce battery cost.

Detailed description of the invention

The diagrammatic cross-section of Fig. 1 secondary cell

The diagrammatic cross-section of constant pressure protection structure member of the Fig. 2 (a) with USB interface

The explosive view of constant pressure protection structure member of the Fig. 2 (b) with USB interface

The structural schematic diagram (one) of Fig. 3 (a) sleeve

The structural schematic diagram (two) of Fig. 3 (b) sleeve

The structural schematic diagram of Fig. 4 support base

The structural schematic diagram of Fig. 5 output terminal

The structural schematic diagram of Fig. 6 (a) pcb board

The schematic rear view of Fig. 6 (b) first substrate

The front schematic view of Fig. 6 (c) first substrate

The front schematic view of Fig. 6 (d) the second substrate

The schematic rear view of Fig. 6 (e) the second substrate

The schematic circuit of Fig. 6 (f) pcb board

The charging voltage of secondary cell-battery core charging voltage-charging current-charging time relationship in Fig. 7 (a) embodiment 1 Curve graph

The discharge voltage of secondary cell-battery core discharge voltage-discharge current-discharge time relationship in Fig. 7 (b) embodiment 1 Curve graph

Specific embodiment

Invention is further described in detail with reference to the accompanying drawings and examples.

Embodiment 1

For specifically making a kind of column secondary battery with USB interface, the perseverance with USB interface is further described Pressure protection structure member, while illustrating this kind of secondary battery construction.

A kind of secondary cell, to be cylindrical, it is required that being：Cell diameter≤14.5mm, cell height≤50.5mm, battery Have USB charge function (input DC 4.25-6.5V, maximum charging current 600mA, 4.21 ± 0.030V of battery charging voltage), Battery has charging and discharging defencive function, and battery has constant pressure 1.50V ± 0.10V, continues the output function of 1.0A electric current, such as Shown in Fig. 1, structure member 3 is protected including shell 1, battery core 2 and constant pressure with USB interface, the battery core of the present embodiment is polymer Lithium ion single battery, (diameter 13mm is highly 35mm) to model 13350, nominal voltage 3.7V, and capacity is 450mAh；Shell 1 is steel shell, and outer diameter is 13.90 ± 0.05mm, and internal diameter is 13.50 ± 0.05mm, highly for 39.0 ± 0.05mm；Battery core 2 is placed in shell 1, and in the open end of shell 1, the mating chimeric constant pressure with USB interface protects structure member 3.

As shown in Fig. 2 (a), Fig. 2 (b), the constant pressure protection structure member 3 with USB interface includes output terminal 31, plastic sheath Cylinder 32, pcb board 33 and plastic support pedestal 34；As shown in Fig. 3 (a), Fig. 3 (b), sleeve 32 be bottom end opening, top closure and The structure of inner hollow opens up output terminal mounting hole 321 on the top of sleeve 32, and about 32 sleeve is divided into exposed parts 322 And assembled portion 323 smaller than the outer diameter of exposed parts 322 and institute are matched outer with the outer diameter of assembled portion 323, assembled portion 323 The complement one another height of the chimeric and assembled portion of sleeve 32 part mutually nested with the mating shell 1 of institute of shell 1 is 3.55mm, is assembled Partial outer diameter is 13.45mm, and the outer diameter of exposed parts is 13.90mm；Through-hole is offered in the side of sleeve exposed parts 322 329, it is provided with four reinforcing ribs 324 on 32 inner wall of sleeve, the distance between the lower end of reinforcing rib 324 and 32 open end of sleeve are 1.4mm；Be provided on 32 inner wall of sleeve the first groove 325 (width 0.95mm), the second groove 326 (width 0.95mm), Third groove 327 (width 4.35mm), the depth of the first groove, the second groove and third groove are 0.67mm, and first is recessed Slot 325 is connected with the lower end of the second groove 326；Symmetrical card hole 328 is additionally provided on the inner wall of 32 lower end of sleeve.Such as Fig. 4 It is shown, positive pole ear perforation 341, negative lug perforation 342 and negative output line perforation 343 are offered in support base 34, this The length of positive pole ear perforation 341, negative lug perforation 342 and negative output line perforation 343 is 2.8mm, width in embodiment Degree is 0.8mm, and protrusion part 344 is provided in the symmetric position of support base 34, is symmetrical arranged on protrusion part 344 Have a buckle 345, support base with a thickness of 1.3mm.As shown in figure 5, pin 311 there are two the bottom settings of output terminal 31, Pin thickness is 0.35mm, and pin widths 0.8mm, the material of entire output terminal is nickel.

As shown in Fig. 6 (a), Fig. 6 (b), Fig. 6 (c), Fig. 6 (d), Fig. 6 (e), Fig. 6 (f), pcb board 33 includes first substrate 331 (with a thickness of 0.8mm), the second substrate 332 (with a thickness of 0.8mm), MicroUSB interface device 333, protection circuit 334, perseverance Voltage follower circuit 335 and charging circuit 336 have set gradually 1 foot, 2 on the power connector end of MicroUSB interface device 333 Foot, 3 feet, 4 feet and 5 feet, wherein 1 foot and 2 feet are positive terminal, 4 feet and 5 feet are negative pole end；Protect circuit 334 and constant voltage output electricity Road 335 is arranged on first substrate 331, and MicroUSB interface device 333 is arranged in the second substrate 332 and MicroUSB interface The both ends that device 333 is serially connected in charging circuit 336 form loop, and MicroUSB interface device 333 is located at first substrate 331 Between the second substrate 332, charging circuit 336 is arranged in the second substrate 332.For the convenience of description, first substrate and second Substrate it is opposite be defined as front on one side, it is opposite facing to be defined as the back side on one side.First substrate 331 and the second substrate 332 are just Face is respectively provided with positive pole ear tie point B+ and cathode output end L-, connects at the back side of first substrate 331 provided with negative lug Point B- and cathode output end L+ is provided with positive pole ear tie point B+, cathode output end L+ at the back side of the second substrate 332 and bears Pole output end L-.The positive positive pole ear tie point B+ of the first substrate 331 and positive positive pole ear tie point B+ of the second substrate Connection, the positive cathode output end L- of first substrate 331 are connected to the positive cathode output end L- of the second substrate 332, so real The connection between first substrate 331 and the second substrate 332 is showed.Protecting circuit 334 includes protection 3341 (model of IC XB5353A), first resistor R1 (specification is 100R ± 1%), first capacitor device C1 (specification 0.1uF, 10V) and the second capacitor Device C2 (specification 0.1uF, 10V) is protected and is concatenated first capacitor C1 between the vdd terminal mouth and the port GND of IC 3341, protects IC The second capacitor C2 is concatenated between 3341 port GND and the port VT；Protect two ports VM and the cathode output end L- of IC 3341 It is connected, one end of first resistor R1, which is connected to, protects the vdd terminal mouth of IC 3341 with the connection of first capacitor C1, and first The other end of resistance R1 connects positive pole ear tie point B+；The port GND and negative lug tie point B- for protecting IC 3341 connect It is logical.Constant voltage outputting circuit 335 includes electric pressure converter 3351 (model ME3104), inductance L (model：2.7uH/3A), second Resistance R2 (specification is 20KR ± 1%), 3rd resistor R3 (specification is 30KR ± 1%), third capacitor C3 (specification 22uF, 15V), the 4th capacitor C4 (specification 0.1uF, 10V) and the 5th capacitor C5 (specification 22uF, 15V), one end of inductance with The port SW of electric pressure converter 3351 is connected, and the other end of inductance L connects cathode output end L+；Electric pressure converter 3351 Third capacitor C3 is concatenated between the port VIN and the port GND, the port VIN of electric pressure converter 3351 is connected with third capacitor C3 Place's connection positive pole ear tie point B+；The 4th capacitor is concatenated between the port FB of electric pressure converter 3351 and cathode output end L+ C4,3rd resistor R3 are attempted by the both ends of the 4th capacitor C4, and the 5th capacitor C5 is attempted by the 4th electricity after concatenating with second resistance R2 The both ends and second resistance R2 for holding C4 are serially connected between the port FB of electric pressure converter 3351 and cathode output end L-；Voltage conversion The port GND of device 3351 is connected with cathode output end L-；The port EN of electric pressure converter 3351 and positive pole ear tie point B+ It is connected.Charging circuit 336 includes that (model XC5071, parameter are charging input DC 4.5V-6V, charging to charging IC 3361 Electric current maximum 600mA, charge 4.21 ± 0.03V of ceiling voltage), diode D, the 4th resistance R4 (specification be 1KR ± 1%), the Five resistance R5 (specification is 0.5R ± 1%), the 6th resistance R6 (specification is 2KR ± 1%), the 6th capacitor C6 (specification 1uF, 10V) and the 7th capacitor C7 (specification 1uF, 10V), one end connection of the 4th resistance R4 charge IC 3361 /port CHRG, The N foot of the other end connection diode D of 4th resistance R4, the port VCC of one end connection charging IC 3361 of the 5th resistance R5, The other end of 5th resistance R5 be connected with the P foot of diode after again with 1 foot of MicroUSB interface device 333 and 2 feet i.e. just Extremely it is connected；The port BAT of one end connection charging IC 3361 of 6th capacitor C6, one end connection of the 6th resistance R6 are filled The port PROG of electric IC 3361, the port VCC of one end connection charging IC 3361 of the 7th capacitor C7, the 6th capacitor C6's is another One end, the port GND of IC 3361 of charging, the other end of the 6th resistance R6 divide again after being connected with the other end of the 7th capacitor C7 It is not connected with 4 feet of cathode output end L-, MicroUSB interface device 333 and 5 feet, that is, negative pole end；The BAT of charging IC 3361 End connection positive pole ear tie point B+.

Pcb board 33 is placed in inside sleeve 32, and the first substrate 331 of pcb board 33, one end of the second substrate 332 are respectively placed in In first groove 325, the second groove 326, first substrate 331, the second substrate 332 the other end be placed in third groove 327, and The through-hole 329 of 32 exposed parts of power connector end face sleeve, 322 side of MicroUSB interface device 333, the ruler of through-hole 329 The very little size with the power connector end of MicroUSB interface device 333 matches, and support base 34 is pacified by snap nesting At the open end of sleeve 32, the buckle 345 in support base 34 complements one another with card hole 328 on 32 lower end inner wall of sleeve, The first groove 325 that the protrusion part 344 of support base 34 is respectively placed in 32 inner wall of sleeve is connected to the lower end of the second groove 326 Locate, the lower end of third groove 327；Output terminal 31 is mounted on output terminal mounting hole 321 and two of output terminal 31 are drawn Foot 311 is connect with the cathode output end L+ at 332 back side of 331 back side of first substrate and the second substrate of pcb board 33 respectively.

In pcb board in the present embodiment for battery charging, discharge process defencive function (overvoltage protection, under-voltage protection, Overcurrent protection etc.), specially：(overcharge electro-detection voltage as 4.30 ± 0.05V, overcharge releasing voltage is additives for overcharge protection 4.10 ± 0.05V, overcharge voltage detection delay time be≤130mS), (over-discharge electro-detection voltage is 2.40 to over ± 0.10V, overdischarge release voltage be 3.00 ± 0.10V, overdischarge voltage detecting delay time be≤40mS), overcurrent protection (overdischarge current detecting is 2.1~3.9A, overdischarge current detecting delay time is≤10mS), short-circuit protection (load short circuits Current detecting is 10~30A, load short circuit current detection delay is≤70 μ S)；It is used to guarantee battery constant voltage output in pcb board Function, guarantee that battery has constant pressure 1.50V ± 0.10V, the output function of maximum 1A electric current.

The positive pole ear perforation 341 that the positive pole ear 21 of battery core 2 passes through support base 34 is connected to 332 back side of the second substrate On positive pole ear tie point B+ on, the negative lug perforation 342 that the negative lug 22 of battery core 2 passes through support base 34 is connected to Cathode output end on the negative lug tie point B- at 331 back side of first substrate, on 332 back side of 1 inner wall of shell and the second substrate Connection is in close contact by passing through 4 phase of negative output line of the negative output line perforation 343 of support base 34 between L-；Shell 1 It is nested with the constant pressure protection structure member 3 as described above with USB interface and fixation, pressure is partially realized by intermittent impression 5 The depth of trace 5 is 0.30mm, and the width of 5 maximum of impression is 1.0mm.

When actual fabrication, carry out according to the following steps：

(1) battery core, that is, polymer Li-ion battery is wrapped into outer membrane, positive pole ear, negative lug is used into insulating cement respectively Band insulate, and prevents the contact with battery steel shell；

(2) plastic sleeve, plastic support pedestal, pcb board, output terminal are made, assembles the perseverance with USB interface as required Pressure protection structure member；

(3) positive pole ear of battery core is then passed through to positive pole ear perforation and the second substrate back of pcb board of support base The negative lug of battery core is passed through negative lug perforation and the pcb board of support base by the positive pole ear tie point B+ connection in face The negative lug tie point B- connection at the first substrate back side connects negative output line and cathode is defeated on cathode output end L- The negative output line that outlet passes through support base is perforated；

(4) the constant pressure protection structure member with USB interface for connecting battery core is packed into along shell aperture end, until sleeve The size of assembled portion part mutually nested with shell is met the requirements, and negative output line is clamped in battery core and shell in assembling process Between inner wall, so that negative output line and shell are in close contact, cathode output end of the entire battery case as battery；

(5) last shell is nested partially intermittent by being stamped and formed out with the constant pressure protection structure member with USB interface Impression, which is realized, to be fixed, and the production of secondary cell is completed.

The height of the plastic sleeve exposed parts of the present embodiment is 9.7mm, and output terminal is beyond the height at the top of plastic sleeve Degree is 1.5mm, and the size after entire battery assembly is diameter 13.90mm, height 50.2mm.

By the secondary cell of the present embodiment, after putting residual electricity completely, pass through the USB charging cable MicroUSB included via battery Interface device charges, in charging process monitor charging voltage (voltage between 1 foot and 4 feet of MicroUSB interface device, Indicate the direct current power source voltage that charges the battery), battery core charging voltage (the negative lug tie point B- at the first substrate back side Voltage between the positive pole ear tie point B+ at the second substrate back side), charging current, charging voltage-battery core charging voltage-fills Shown in electric current-charging time graph of relation such as Fig. 7 (a).The entire charging time is 71 minutes, and charging voltage is since most 4.80V rises 5.13V to the end, and battery core voltage rises 4.19V to the end from the 3.34V of beginning, and charging current is from most opening About after forty minutes, electric current is begun to decline the 450mA constant-current charge of beginning, until charging terminates to be 0mA.The charging capacity of entire battery core is closed It is calculated as 468mAh.By Fig. 7 (a) it is found that the constant pressure protection structure member with USB interface realizes MicroUSB interface device DC5V DC charging function, and 4.19V is being charged to, charging current can be turned off, normal Charge Management function is realized.

It will be filled with the battery of electricity, discharged, put by output terminal (anode) and shell (cathode) with constant current 1000mA Discharge voltage (the electricity of the voltage of battery bringing onto load operation output end, that is, between output terminal and shell is monitored in electric process Pressure), battery core discharge voltage (the negative lug tie point B- at the first substrate back side and the positive pole ear tie point at the second substrate back side Voltage between B+), discharge current, discharge voltage-battery core discharge voltage-discharge current-discharge time graph of relation such as Fig. 7 (b) shown in.Entire discharge time is 64.9 minutes, and discharge voltage is 1.48V between 1.46V, and electric discharge end moment drops to 0V；Battery core voltage gradually declines from the 4.15V of beginning, abruptly starts to until voltage reaches 2.51V, shows to trigger under-voltage guarantor Guard strip part, protection IC have turned off discharge loop, discharge off；After 1000mA of the discharge current since most discharges 64.9 minutes, Electric current moment drops to 0.The discharge capacity of entire battery core adds up to 1082.2mAh.By Fig. 7 (b) it is found that the perseverance with USB interface Pressure protection structure member realizes constant voltage output and discharge prevention function.

It should be noted that although the present embodiment is said for being depressured constant pressure 1.5V output type lithium ion battery It is bright, but be equally applicable to battery and need to boost the operating condition, such as 9V constant voltage output lithium ion battery etc. of constant voltage output.

The above is only the preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvement and modification It should be considered as protection scope of the present invention.

Claims (9)

1. a kind of constant pressure with USB interface protects structure member, it is characterised in that：Including output terminal, sleeve, pcb board and branch Pedestal is supportted, the sleeve is the structure of bottom end opening, top closure and inner hollow, opens up output end on the top of the sleeve Sub- mounting hole, the sleeve are divided into exposed parts and assembled portion up and down, and the outer diameter of assembled portion is smaller than the outer diameter of exposed parts And assembled portion complements one another chimeric with an institute matched shell, offers through-hole in the side of sleeve exposed parts；Support base On offer at least one perforation；The pcb board includes first substrate, the second substrate, USB interface device, protection circuit, constant pressure Output circuit and charging circuit, the protection circuit and constant voltage outputting circuit are arranged on the first substrate, the USB interface device It is arranged in the second substrate and USB interface device is serially connected in the both ends formation loop of charging circuit, USB interface device is located at Between first substrate and the second substrate, it is connected between the first substrate and the second substrate；Charging circuit setting is the On two substrates；Positive pole ear tie point (B+), negative lug tie point are set on the first substrate or/and the second substrate (B-), cathode output end (L+) and cathode output end (L-)；The pcb board is placed in sleeve inner, and the power supply of USB interface device connects The through-hole rectified to sleeve exposed parts side is connect, the size of the power connector end of the size and USB interface device of through-hole matches Set, support base nesting is mounted at the open end of sleeve, output terminal be mounted on output terminal mounting hole and with pcb board Cathode output end (L+) connection；

The protection circuit includes protection IC, first resistor (R1), first capacitor device (C1) and the second capacitor (C2), protects IC Vdd terminal mouth and the port GND between concatenate first capacitor (C1), protect concatenated between the port GND of IC and the port VT second electricity Hold (C2)；Two ports VM of protection IC are connected with cathode output end (L-), and one end of first resistor (R1) is connected to protection The other end of the vdd terminal mouth of IC and the connection of first capacitor (C1), first resistor (R1) connects positive pole ear tie point (B +)；The port GND of protection IC is connected to negative lug tie point (B-)；

The constant voltage outputting circuit includes electric pressure converter, inductance, second resistance (R2), 3rd resistor (R3), third capacitor (C3), the 4th capacitor (C4) and the 5th capacitor (C5), one end of inductance are connected with the port SW of electric pressure converter, inductance The other end connect cathode output end (L+)；Third capacitor (C3) is concatenated between the port VIN of electric pressure converter and the port GND, The port VIN of electric pressure converter connect positive pole ear tie point (B+) with the connection third capacitor (C3)；Electric pressure converter The 4th capacitor (C4) is concatenated between the port FB and cathode output end (L+), 3rd resistor (R3) is attempted by the two of the 4th capacitor (C4) End, the 5th capacitor (C5) is attempted by the both ends of the 4th capacitor (C4) after concatenating with second resistance (R2) and second resistance (R2) concatenates Between the port FB of electric pressure converter and cathode output end (L-)；The port GND of electric pressure converter and cathode output end (L-) It is connected；The port EN of electric pressure converter is connected with positive pole ear tie point (B+)；

The charging circuit includes charging IC, diode, the 4th resistance (R4), the 5th resistance (R5), the 6th resistance (R6), the 6th Capacitor (C6) and the 7th capacitor (C7), one end connection charging IC of the 4th resistance (R4) /port CHRG, the 4th resistance (R4) the N foot of other end connection diode, the port VCC of one end connection charging IC of the 5th resistance (R5), the 5th resistance (R5) the other end is connected with the positive terminal of USB interface device again after being connected with the P foot of diode；6th capacitor (C6) One end connection charging IC the port BAT, the 6th resistance (R6) one end connection charging IC the port PROG, the 7th capacitor (C7) One end connection charging IC the port VCC, the other end of the 6th capacitor (C6), the port GND for the IC that charges, the 6th resistance (R6) The other end be connected with the other end of the 7th capacitor (C7) after again respectively with cathode output end (L-), USB interface device it is negative Extremely it is connected；The end BAT of charging IC connects positive pole ear tie point (B+)；

The constant pressure with USB interface protects structure member, is integrated with battery USB charge function, charging process defencive function, puts Electric process defencive function, constant cell voltage output function, battery structure support function meet battery charging requirement, safety is protected Shield requires, electrical equipment requires the output characteristics of battery, battery structure requirement.

2. a kind of constant pressure with USB interface as described in claim 1 protects structure member, it is characterised in that：In the sleeve Be arranged on the position opposite with the first substrate of pcb board, the second substrate and USB interface device on wall it is fluted, the groove Width is greater than the thickness of corresponding first substrate, the second substrate or USB interface device, and the depth of the groove is 0.2 ~1.0mm.

3. a kind of constant pressure with USB interface as claimed in claim 2 protects structure member, it is characterised in that：In the sleeve Several reinforcing ribs are provided on wall, there are be not less than support base between the lower end of the reinforcing rib and the sleeve openings end The distance of thickness.

4. a kind of constant pressure with USB interface as claimed in claim 3 protects structure member, it is characterised in that：The support bottom Seat is with a thickness of 0.5~3.0mm.

5. a kind of constant pressure with USB interface as described in claim 1 protects structure member, it is characterised in that：The sleeve Assembled portion with the height of the mutually nested part of mating shell be 2.0~5.0mm, the outside diameter d 1 of assembled portion meets d-0.2 ≤ d1≤d, wherein internal diameter of the d for mating shell.

6. a kind of constant pressure with USB interface as described in claim 1 protects structure member, it is characterised in that：The output end The bottom of son is provided with pin, and the pin is connected with the cathode output end (L+) on first substrate or the second substrate.

7. a kind of constant pressure with USB interface as described in claim 1~6 is any protects structure member, it is characterised in that：It is described Support base is mating chimeric by snap with the sleeve, is symmetrically arranged at least one in the edge of the support base To buckle, card hole is offered in sleeve opposite position, buckle complements one another chimeric with card hole.

8. a kind of secondary cell, including shell and battery core, battery core are placed in shell, it is characterised in that：Match in the open end of shell A kind of chimeric constant pressure with USB interface any just like claim 1~7 of set protects structure member, and the battery core is just The perforation that pole tab passes through support base is connected on the positive pole ear tie point in first substrate or the second substrate, the battery core Negative lug pass through support base perforation be connected on the negative lug tie point in first substrate or the second substrate, shell Pass through the output line of the perforation across support base between cathode output end (L-) on inner wall and first substrate or the second substrate It is connected；The shell and a kind of constant pressure protection structure member with USB interface as described in claim 1~7 is any are mutually embedding Set part is realized by impression continuously or discontinuously to be fixed.

9. a kind of secondary cell as claimed in claim 8, it is characterised in that：The depth of the impression is 0.03~0.50mm, The width of impression maximum is 0.1~1.5mm.