CN100541864C - The conductive handle conductive connecting structure of serondary lithium battery - Google Patents

Abstract

A kind of conductive handle conductive connecting structure of serondary lithium battery, leading-out terminal of the present invention is provided with the pooling zone of a conduction, the positive and negative electrode that this pooling zone is just rolled up two ends with the utmost point conducts electricity handle and is positioned at the corresponding position, carry out this and respectively conduct electricity handle when being connected operation with the conduction of leading-out terminal, can be earlier place this respectively to conduct electricity behind the outside of handle the bundle muzzle of constriction member, then restraint mouth and gradually tighten operation, when bundle mouth is contracted to when band, pooling zone and anodal conduction handle or negative pole conduction handle are all closely contacted mutually, promptly finish positive and negative electrode conduction handle and combine operation with the conduction of leading-out terminal; It should be noted that, electric connection between this positive and negative electrode conduction handle and this leading-out terminal, be once each conduction handle to be tightened with leading-out terminal comprehensively through the bundle mouth of constriction member to be connected, not only do not need any weld job in the process, and the handle that needn't conduct electricity one by one carries out, in view of the above, not only flow chart can significantly be simplified and equipment cost is also significantly reduced to see through the present invention.

Description

The conductive handle conductive connecting structure of serondary lithium battery

Technical field

A kind of conductive handle conductive connecting structure of serondary lithium battery is meant that especially the conduction handle of being drawn from the utmost point volume serondary lithium battery inside and the syndeton of battery conductive terminal design.

Background technology

The utmost point volume structure of existing serondary lithium battery, see also Fig. 1, shown in Figure 2, this is No. the 5849431st, United States Patent (USP), wherein, this utmost point volume 10 is by an anodal layer 11, after one separator 12 and a negative electrode layer 13 are in regular turn mutually stacked, one circle circle is wound in center bar 14 outsides and constitutes, in this patent case especially just with this, negative electrode layer 11,12 one distolateral, form jagged plural conductive handle 111 by the mode of cutting in advance, 131 structures, in order to do can see through concentrating this respectively to conduct electricity handle 111,131 weld mutually with the external end edge of disc shape conducting terminal 15, and then the electric energy of utmost point volume 10 is derived;

In addition, see also shown in Figure 3, this is another kind of existing serondary lithium battery structure, it is in anodal layer 11a and the negative electrode layer 13a ora terminalis of utmost point volume 10a, earlier with welding manner connect set out plural conductive handle 111a, 131a after, the person of connecing sees through solder technology once more, this end of respectively conducting electricity handle 111a, 131a is welded mutually with the conducting terminal 15a outer rim of battery, use the electric energy of utmost point volume is derived battery;

Through above explanation as can be known, no matter be conduction handle one-body molded or that welding is constituted, the final electric connection of this conduction handle and conducting terminal all is to see through solder technology should conduct electricity handle and weld with this conducting terminal one by one and finish electric connection at present; It should be noted that for high-capacity battery the quantity of inside battery conduction handle is quite a lot of usually, the conduction handle of using through a greater number reduces internal battery impedance, to meet the demand of the big electric current charge and discharge of high-capacity battery; But when conduction handle that quantity is huge and conducting terminal carry out weld job, not only weld job quite time-consuming, take a lot of work, and can increase the difficulty and the challenge of battery processing procedure;

Therefore, research and development center of gravity of the present invention is to make this respectively to conduct electricity between handle and the conducting terminal, need not see through weld job, promptly is able to directly be connected as excellent electrical property with conducting terminal.

Summary of the invention

Main purpose of the present invention, be to provide a kind of conductive handle conductive connecting structure of serondary lithium battery, electric connection between positive and negative electrode conduction handle of the present invention and this leading-out terminal, be once each conduction handle to be tightened with leading-out terminal comprehensively through the bundle mouth of constriction member to be connected, not only do not need weld job, and the handle that needn't conduct electricity one by one connects, see through the present invention not only flow chart can effectively be simplified and be organized and established and equipment cost is also all significantly reduced.

For reaching above-mentioned purpose, the technical solution adopted in the present invention is: a kind of conductive handle conductive connecting structure of serondary lithium battery, mainly in a battery can, be provided with a center bar, two end Joints with two leading-out terminals and this center bar, then be wound with utmost point volume in the center bar outside, and make with two constriction members that utmost point volume is distolateral to contact conducting with leading-out terminal, wherein this center bar, two leading-out terminals, utmost point volume and two constriction members are formed a battery components, again with this battery components of two fixed by nut and battery can and constitute battery, it is characterized in that at last:

This utmost point volume is made of an anodal layer, a negative electrode layer and at least one separator, and this positive and negative electrode laminar surface is coated with positive electrode or negative material respectively, and this separator is provided with between the positive and negative electrode layer; Distolateral positive pole that is provided with a uncoated positive electrode in anodal floor connects the district, then distolateral in negative electrode layer with respect to another of anodal layer, the negative pole that also is provided with a uncoated negative material connects the district, the anodal layer of order, separator and negative electrode layer are in regular turn mutually stacked, and make positive pole connect the district and negative pole connects the district and exposes from two distolateral protruding out respectively, after the outside that each layer circle circle is wound in center bar constituted utmost point volume, two ends of this utmost point volume protruded out just respectively and expose that positive pole connects the district and negative pole connects the district;

This leading-out terminal is conductive structure, and this leading-out terminal is that link combines with the connecting portion of this center bar with an end; The end in addition of this leading-out terminal then is shaped to an output; This leading-out terminal then forms a flange and a pooling zone between this link and this output, this pooling zone is to be positioned at that positive pole with this utmost point volume connects the district or negative pole connects district's opposite position, and this flange then abuts against mutually with the end cap of battery can;

This constriction member has a band and a framework, is provided with a blocking part in this framework, this band surface then is provided with a plurality of roller seating spaces, this band wore the framework aftershaping to be had a branch ofly mouthful, and this roller seating space and blocking part be unidirectional clip, and can restraint a mouthful convergent operation; This constriction member be place the positive pole of this utmost point volume to connect district or negative pole with the bundle muzzle to connect the district outside, seeing through convergent should bundle mouthful, makes the positive pole of this utmost point volume connect closely contact and the electrical combination mutually of pooling zone that district or negative pole connect district and this leading-out terminal.

The conductive handle conductive connecting structure of described serondary lithium battery, the connecting portion of this center bar is a slot, and the link of this leading-out terminal is an inserted link, this inserted link plugs with slot and combines.

The conductive handle conductive connecting structure of described serondary lithium battery, the framework of this constriction member is equipped with a band and a knob, this knob surface forming has a screw thread, makes this screw thread mutually meshing with the roller seating space of this band, and the bundle mouth that can transfer this band through this knob of rotation tightens gradually.

A kind of conductive handle conductive connecting structure of serondary lithium battery, mainly in a battery can, be provided with a center bar, two end Joints with two leading-out terminals and this center bar, then be wound with utmost point volume in the center bar outside, and make with two constriction members that utmost point volume is distolateral to contact conducting with leading-out terminal, wherein this center bar, two leading-out terminals, utmost point volume and two constriction members are formed a battery components, constitute battery with this battery components of two fixed by nut and battery can more at last, wherein:

This utmost point volume is made of an anodal layer, a negative electrode layer and at least one separator, and this positive and negative electrode laminar surface is coated with positive electrode or negative material respectively, and this separator is provided with between the positive and negative electrode layer; Distolateral positive pole that is provided with a uncoated positive electrode in anodal floor connects the district, then distolateral in negative electrode layer with respect to another of anodal layer, the negative pole that also is provided with a uncoated negative material connects the district, the anodal layer of order, separator and negative electrode layer are in regular turn mutually stacked, and make positive pole connect the district and negative pole connects the district and exposes from two distolateral protruding out respectively, after the outside that each layer circle circle is wound in center bar constituted utmost point volume, two ends of this utmost point volume protruded out just respectively and expose that positive pole connects the district and negative pole connects the district;

This leading-out terminal is conductive structure, and this leading-out terminal is that link combines with the connecting portion of this center bar with an end; The end in addition of this leading-out terminal then is shaped to an output; This leading-out terminal then forms a flange and a pooling zone between this link and this output, this pooling zone is to be positioned at that positive pole with this utmost point volume connects the district or negative pole connects district's opposite position, and this flange then abuts against mutually with the end cap of battery can;

This constriction member, have a band, a knob and a framework, this knob surface forming has a screw thread, this band surface then is provided with a plurality of roller seating spaces, this knob and this band wore framework respectively, make this band form a branch of mouthful and this screw thread and roller seating space are able to mutually meshingly, see through and rotate this knob and can transfer mouthful deflation gradually of this bundle; This constriction member be place the positive pole of this utmost point volume to connect district or negative pole with the bundle muzzle to connect the district outside, seeing through convergent should bundle mouthful, makes the positive pole of this utmost point volume connect closely contact and the electrical combination mutually of pooling zone that district or negative pole connect district and this leading-out terminal.

Use beneficial effect of the present invention to be: a kind of conductive handle conductive connecting structure of serondary lithium battery, electric connection between this positive and negative electrode conduction handle and this leading-out terminal, be once each conduction handle to be tightened with leading-out terminal comprehensively through the bundle mouth of constriction member to be connected, not only do not need any weld job in the process, and the handle that needn't conduct electricity one by one carries out, in view of the above, not only flow chart can significantly be simplified and equipment cost is also significantly reduced to see through the present invention.

About the present invention for reaching above-mentioned purpose, the technology that is adopted, means and effect, lift a preferable possible embodiments now and cooperate graphic detailed description as after;

Description of drawings

Fig. 1 is that the existing utmost point volume of No. the 5849431st, United States Patent (USP) is formed the structural upright schematic diagram.

Fig. 2 is the conduction handle and the conducting terminal Welding Structure schematic diagram of No. the 5849431st, United States Patent (USP).

Fig. 3 is that another existing lithium battery is formed the structure cross-sectional schematic.

Fig. 4 is the schematic perspective view that utmost point volume of the present invention and center bar are reeled and made up.

Fig. 5 is the wherein schematic perspective view of a constriction member and conduction handle Shu Heqian of the present invention.

Fig. 6 is that constriction member of the present invention closes the schematic perspective view of finishing with conduction handle bundle.

Fig. 7 is the sectional perspective enlarged diagram that constriction member of the present invention and utmost point clove hitch close.

Fig. 8 is that structural group of the present invention is located at battery can internal state cross-sectional schematic.

Fig. 9 is wherein a constriction member and an integrated conduction handle Shu Heqian stereogram of the present invention.

Figure 10 is constriction member of the present invention and integrated conduction handle Shu Hehou stereogram.

Figure 11 is constriction member of the present invention and another integrated conduction handle Shu Hehou stereogram.

Figure 12 is the sheathed preceding schematic perspective view of another constriction member of the present invention and utmost point volume.

Figure 13 is that schematic perspective view is amplified in the part of Figure 12 constriction member and utmost point volume after sheathed.

[primary clustering symbol description]

10,10a utmost point volume 11, the anodal layer of 11a

111,131,111a, 131a conduction handle 12 separators

13,13a negative electrode layer 14 center bars

15,15a conducting terminal

20 battery cans, 21 ports

22 end caps 221 are worn groove

30 center bars, 31 connecting portions

40,40a utmost point volume 41, the anodal layer of 41a

411 positive electrodes, 42 negative electrode layers

421 negative materials, 43 separators

44,44a, 44b, the anodal conduction of 44c handle 45 negative poles conduction handle

50,50a, 50b, 50c leading-out terminal 51 links

52 outputs, 53 flanges

54,54a, 54c pooling zone 60,60a, 60b, 60c constriction member

61,61a band 611,611a roller seating space

62 knobs, 621 screw threads

63,63a framework 631 blocking parts

64,64a bundle mouthful 70 nuts

80 cut seam

Embodiment

At first, please cooperate and consult Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8, the conductive handle conductive connecting structure of a kind of serondary lithium battery that the embodiment of the invention provided, mainly in a battery can, be provided with a center bar, these center bar two ends respectively are installed with a leading-out terminal respectively, this center bar outside then is wound with utmost point volume, two ends of this utmost point volume then extend positive pole conduction handle and the negative pole conduction handle of at least one respectively, seeing through two constriction members respectively will be just, negative pole conduction handle closes with the leading-out terminal outside bundle that contacts tightly, this center bar wherein, two leading-out terminals, utmost point volume and two constriction members are formed a battery components, constitute battery with this battery components of two fixed by nut and battery can more at last; Wherein:

These battery can 20, two ends respectively offer a port 21, and inside can be established for the battery component sets, and can see through two end caps 22 and establish as the closing cap of this each port 21, then offer one on this end cap 22 and wear groove 221 and pass for the battery members;

This center bar 30 is an insulation system, is mounted on battery can 20 inside, and these center bar 30 2 ends respectively are shaped to a junction 31 respectively, and this connecting portion 31 is an inserting slot construction;

This utmost point volume 40, by an anodal layer 41, one negative electrode layer 42 and at least one separator 43 constitute, this just, negative electrode layer 41,42 surfaces are coated with positive electrode 411 or negative material 421 respectively, this separator 43 is provided with and just is positioned at, negative electrode layer 41, between 42, distolateral at least one anodal conduction handle 44 that is welded with in this positive pole layer 41, distolateral in another of negative electrode layer 42, then be welded with at least one negative pole conduction handle 45, the anodal layer 41 of order, after separator 43 and negative electrode layer 42 are in regular turn mutually stacked, each layer circle again encloses the outside formation battery pole coil 40 that is wound in center bar 30, and just, negative pole conduction handle 44,45 lay respectively at the two distolateral of utmost point volume 40;

This leading-out terminal 50 is conductive structure, and this leading-out terminal one end is shaped to a link 51, and this link 51 can be a hinge pedestal structure, and combines with the connecting portion 31 of this center bar 30; The end in addition of this leading-out terminal 50 then is shaped to an output 52, and this output 52 may be molded to a screw-rod structure; This leading-out terminal 50 is between this link 51 and this output 52, form a flange 53 and a pooling zone 54, this pooling zone 54 is positioned at positive and negative electrode conduction handle 44, the 45 opposite position places with this utmost point volume 40, and this flange 53 then abuts against mutually with the end cap 22 of battery can 20;

This constriction member 60, have a band 61, a knob 62 and a framework 63, these knob 62 surface formings have a screw thread 621, these band 61 surfaces then are provided with a plurality of roller seating spaces 611, this knob 62 and this band 61 wore framework 63 respectively, make this band 61 form a branch of mouthfuls 64 and this screw thread 621 and roller seating space 611 be able to mutually meshingly, see through and rotate this knob 62 and can transfer this bundle mouthfuls 64 deflation or expand gradually; This constriction member 60 is positive and negative electrodes conduction handle 45 outsides that are placed on this utmost point volume 40 with bundle mouth 64, sees through the deflation operation of this bundle mouth 64, and this positive and negative electrode conduction handle 44,45 is contacted and electrical combination closely with the pooling zone 54 of this leading-out terminal 50;

This nut 70, after utmost point volume 40 and center bar 30 and leading-out terminal 50 see through constriction member 60 and finish group and establish, wore groove 221 with what the output 52 of this leading-out terminal 50 wore this end cap 22, and see through this flange 53 and abut against mutually with these end cap 22 inner faces, then being able to this nut 70 is locked on this output 52, and the lock that sees through this nut 70 establishes, and this each battery components is firmly combined with battery can 20.

The above, the conduction handle syndeton composition and the member assembly that are serondary lithium battery of the present invention concern the position, see through the technology of the present invention, this respectively conduct electricity handle must see through the constriction member directly and leading-out terminal electrically connect, need not see through weld job fully can reach, not only simplifying the production process of battery and this respectively conducts electricity between handle and the leading-out terminal to be to see through the large tracts of land contact to be connected, can effectively to reduce the impedance of battery, and meet the user demand of the big electric current charge and discharge of battery; Now use mode of operation to be described in detail as follows it:

Please consult Fig. 4 again, Fig. 5, Fig. 6, shown in Figure 7, leading-out terminal 50 of the present invention is positioned at the middle section, form the pooling zone 54 of a conduction, and this pooling zone 54 just and the utmost point just rolling up 40 2 ends, negative pole conduction handle 44,45 are positioned at the corresponding position, just carry out battery, negative pole conduction handle 44,45 when being connected operation with the conduction of leading-out terminal 50, can be earlier with the bundle mouth 64 of constriction member 60 be placed on this each just, negative conduction handle 44,45 outside, then, can see through turning knob 62 makes its screw thread 621 meshing with the roller seating space 611 of band 61, and then drive band 61 by framework 63, and bundle mouthful 64 operations of tightening gradually, when being contracted to, bundle mouth 64 makes band 61, when pooling zone 54 and anodal conduction handle 44 or negative pole conduction handle 45 all closely contact mutually, just promptly finish, negative pole conduction handle 44,45 combine operation with the conduction of leading-out terminal 50, need not carry out any weld job in the process;

It should be noted that, electric connection among the present invention between this positive and negative electrode conduction handle 44,45 and this leading-out terminal 50, be that the bundle mouth 64 that sees through constriction member 60 is once tightened each negative or positive electrode conduction handle 44,45 with leading-out terminal 50 comprehensively and is connected, in the process, complete without any need for weld job, and needn't conduct electricity handle one by one and carry out; For being connected for the operation of the huge conduction handle of high-capacity battery quantity and leading-out terminal, see through the technology of the present invention not only flow chart effectively simplified and organized and established and equipment cost is also all significantly reduced; In addition, owing between the pooling zone 54 of this positive and negative electrode conduction handle 44,45 and leading-out terminal 50, can carry out the electric connection of large tracts of land contact, this helps to reduce the internal impedance value of battery;

Moreover, each negative or positive electrode conduction handle of among the embodiment this is to be welded in utmost point volume institute constitutor with an end as described above, see also Fig. 9, shown in Figure 10, this is directly in anodal layer 41a or the negative electrode layer ora terminalis of utmost point volume 40a, reserve the zone of a uncoated positive electrode or negative material earlier, the type that directly this reserved area one type is set as again has anodal conduction handle 44a or negative pole conduction handle structure, this each integrated anodal conduction handle 44a or negative pole conduction handle are behind constriction, can see through constriction member 60a of the present invention equally, make this each anodal conduction handle 44a or negative pole conduction handle and the pooling zone 54a of leading-out terminal 50a do the electric connection that closely contacts; In addition, this type is set as the negative or positive electrode conduction handle of type, this respectively conducts electricity the sanction that can be point blank between the handle establishes kenel, for example see also shown in Figure 11, after 80s for only cutting seam between each anodal conduction handle 44b or the negative pole conduction handle, be shaped to minimum distance adjacent conductive ansa attitude, also same applicable constriction member 60b of the present invention carries out this each anodal conduction handle 44b or negative pole conduction handle and is connected with the constriction contact of leading-out terminal 50b pooling zone;

What deserves to be mentioned is, the structure that the framework of this constriction member 60c and knob can be combined as a whole, see also Figure 12, shown in Figure 13, be directly one-body moldedly in framework 63a to have a blocking part 631 with unidirectional double wedge to use the replacement knob, after making band 61a wear framework 63a, the roller seating space 611a of this band 61a must be the unidirectional clip of the double wedge of blocking part 631, and can restraint a mouthful 64a convergent operation, see through convergent and be somebody's turn to do a bundle mouthful 64a, this positive pole conduction handle 44c or negative pole conduction handle are closely contacted and electrically combination mutually with leading-out terminal 60c pooling zone 54c;

Through above explanation as can be known, the present invention sees through the bundle mouth constriction design of constriction member, can conduct electricity handle and leading-out terminal to this and directly tighten the Shu Hezuo industry, do not need welding sequence in the process fully, and once finish and respectively conduct electricity the electric connection of handle and leading-out terminal, not only operation is significantly simplified and cost significantly reduces.

Claims (4)

1. the conductive handle conductive connecting structure of a serondary lithium battery, mainly in a battery can, be provided with a center bar, two end Joints with two leading-out terminals and this center bar, then be wound with utmost point volume in the center bar outside, and make with two constriction members that utmost point volume is distolateral to contact conducting with leading-out terminal, wherein this center bar, two leading-out terminals, utmost point volume and two constriction members are formed a battery components, constitute battery with this battery components of two fixed by nut and battery can more at last; It is characterized in that:

This utmost point volume is made of an anodal layer, a negative electrode layer and at least one separator, and this positive and negative electrode laminar surface is coated with positive electrode or negative material respectively, and this separator is provided with between the positive and negative electrode layer; Distolateral positive pole that is provided with a uncoated positive electrode in anodal floor connects the district, then distolateral in negative electrode layer with respect to another of anodal layer, the negative pole that also is provided with a uncoated negative material connects the district, the anodal layer of order, separator and negative electrode layer are in regular turn mutually stacked, and make positive pole connect the district and negative pole connects the district and exposes from two distolateral protruding out respectively, after the outside that each layer circle circle is wound in center bar constituted utmost point volume, two ends of this utmost point volume protruded out just respectively and expose that positive pole connects the district and negative pole connects the district;

This leading-out terminal is conductive structure, and this leading-out terminal is that link combines with the connecting portion of this center bar with an end; The end in addition of this leading-out terminal then is shaped to an output; This leading-out terminal then forms a flange and a pooling zone between this link and this output, this pooling zone is to be positioned at that positive pole with this utmost point volume connects the district or negative pole connects district's opposite position, and this flange then abuts against mutually with the end cap of battery can;

This constriction member has a band and a framework, is provided with a blocking part in this framework, this band surface then is provided with a plurality of roller seating spaces, this band wore the framework aftershaping to be had a branch ofly mouthful, and this roller seating space and blocking part be unidirectional clip, and can restraint a mouthful convergent operation; This constriction member be place the positive pole of this utmost point volume to connect district or negative pole with the bundle muzzle to connect the district outside, seeing through convergent should bundle mouthful, makes the positive pole of this utmost point volume connect closely contact and the electrical combination mutually of pooling zone that district or negative pole connect district and this leading-out terminal.

2. the conductive handle conductive connecting structure of serondary lithium battery according to claim 1, it is characterized in that: the connecting portion of this center bar is a slot, and the link of this leading-out terminal is an inserted link, this inserted link plugs with slot and combines.

3. the conductive handle conductive connecting structure of serondary lithium battery according to claim 1, it is characterized in that: the framework of this constriction member is equipped with a band and a knob, this knob surface forming has a screw thread, make this screw thread mutually meshing with the roller seating space of this band, the bundle mouth that can transfer this band through this knob of rotation tightens gradually.

4. the conductive handle conductive connecting structure of a serondary lithium battery, mainly in a battery can, be provided with a center bar, two end Joints with two leading-out terminals and this center bar, then be wound with utmost point volume in the center bar outside, and make with two constriction members that utmost point volume is distolateral to contact conducting with leading-out terminal, wherein this center bar, two leading-out terminals, utmost point volume and two constriction members are formed a battery components, constitute battery with this battery components of two fixed by nut and battery can more at last, it is characterized in that:

This utmost point volume is made of an anodal layer, a negative electrode layer and at least one separator, and this positive and negative electrode laminar surface is coated with positive electrode or negative material respectively, and this separator is provided with between the positive and negative electrode layer; Distolateral positive pole that is provided with a uncoated positive electrode in anodal floor connects the district, then distolateral in negative electrode layer with respect to another of anodal layer, the negative pole that also is provided with a uncoated negative material connects the district, the anodal layer of order, separator and negative electrode layer are in regular turn mutually stacked, and make positive pole connect the district and negative pole connects the district and exposes from two distolateral protruding out respectively, after the outside that each layer circle circle is wound in center bar constituted utmost point volume, two ends of this utmost point volume protruded out just respectively and expose that positive pole connects the district and negative pole connects the district;

This leading-out terminal is conductive structure, and this leading-out terminal is that link combines with the connecting portion of this center bar with an end; The end in addition of this leading-out terminal then is shaped to an output; This leading-out terminal then forms a flange and a pooling zone between this link and this output, this pooling zone is to be positioned at that positive pole with this utmost point volume connects the district or negative pole connects district's opposite position, and this flange then abuts against mutually with the end cap of battery can;

This constriction member, have a band, a knob and a framework, this knob surface forming has a screw thread, this band surface then is provided with a plurality of roller seating spaces, this knob and this band wore framework respectively, make this band form a branch of mouthful and this screw thread and roller seating space are able to mutually meshingly, see through and rotate this knob and can transfer mouthful deflation gradually of this bundle; This constriction member be place the positive pole of this utmost point volume to connect district or negative pole with the bundle muzzle to connect the district outside, seeing through convergent should bundle mouthful, makes the positive pole of this utmost point volume connect closely contact and the electrical combination mutually of pooling zone that district or negative pole connect district and this leading-out terminal.

Images