CN102569679A - Battery core, battery and method for sealing and fixing electrode and cap of battery - Google Patents
Battery core, battery and method for sealing and fixing electrode and cap of battery Download PDFInfo
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- CN102569679A CN102569679A CN2011104552765A CN201110455276A CN102569679A CN 102569679 A CN102569679 A CN 102569679A CN 2011104552765 A CN2011104552765 A CN 2011104552765A CN 201110455276 A CN201110455276 A CN 201110455276A CN 102569679 A CN102569679 A CN 102569679A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a battery core, a battery and a method for sealing and fixing an electrode and a cap of the battery. The battery core comprises a closed shell and a roll core which is fixed inside the closed shell, wherein the closed shell comprises a shell and the cap; the shell is provided with an opening part at the top; the cap is fixed to the opening part; the roll core is provided with two electrodes; at least one of the two electrodes is insulated from the cap and is a first electrode matched with the cap; the cap is provided with a first through hole corresponding to the first electrode one by one; and the first electrode penetrates through the first through hole and is adhered and fixed to the hole wall of the first through hole. By adopting the adhering and fixing technology, the electrode and the cap are fixed and the battery manufacturing process is greatly simplified; and the electrode of the roll core is directly connected with a protection circuit board, so that the leading-out material and the process of the electrode are reduced and the quality control is facilitated.
Description
Technical field
The invention relates to a kind of battery, comprise lithium battery, vanadium cell, super capacitance cell etc.
Background technology
The finished product lithium battery comprises electric core, protection circuit plate, plastic frame (or going up plastic cover) and nameplate paper.The effect of protection circuit plate is to prevent that battery from being overcharged and by overdischarge.
A kind of existing lithium battery is as shown in Figure 1; This lithium battery comprises electric core and protection circuit plate; The electricity core comprises block 1, shell 2, volume core 7 and electrolyte; Block 1 constitutes sealing shell with shell 2 welding, and electrolyte is sealed in the sealing shell with volume core 7, and promptly electrolyte is placed in the confined space of electric core with the volume core.Block 1 comprises cover plate 5, goes up sealing ring 11, lower seal 13, rivet 6 and brace 35, and the rivet bar 17 of rivet 6 passes sealing ring 11, lower seal 13 and brace 35 successively from cover plate upper surface 21, and rivet clasp becomes block together.In the riveted joint process; Rivet bar 17 length shorten with the end distortion and make rivet cap 20 and brace 35 pitch smaller; Make sealing ring 11 be attached to cover plate 5 upper surfaces 21 (actual) for being pressed on the step plane in cover plate rivet hole; Lower seal 13 is attached to cover plate 5 lower surfaces 22; Make between rivet 6 and the cover plate 5 sealing and insulation, rivet 6 is also guided to an electrode 10 that is placed on the positive and negative electrode of the volume core in the electric core confined space outside the electric core confined space except that tightening together last sealing ring 11, cover plate 5, lower seal 13 and brace 35.In the actual production, the last sealing ring 11 of aluminum-shell battery, lower seal 13 are made for one, are expelled to plastic material in the cover plate rivet hole with injection molding technology, mold a body sealing ring; The last sealing ring 11 of box hat battery, lower seal 13 are made for split, and method is assemblied in lower seal 13 on the cover plate lower surface 22, is assemblied in last sealing ring 11 on the cover plate upper surface 21 by hand.
Drawing of existing aluminum-shell battery outer electrode (negative pole) 10 all is as conductor introduction with the rivet 6 of block; And the sealing of rivet 6 and cover plate 5 be through be pressed on the upper surface 21 of cover plate 5 to last sealing ring 11, lower seal 13, the method on the lower surface 22 realizes; Other becomes the rivet bar 17 length diameter that shortens to make pipe portion 3 inner surfaces and rivet bar 17 interference fit, outer surface and cover plate 5 rivet holes 4 interference fit of sealing ring greatly, also is the encapsulating method of realization rivet 6 and cover plate 5.If these two kinds of methods can concur, that rivet 6 can be better with the sealing effectiveness of cover plate 5.
The scheme of outer electrode (negative pole) from pole piece to the protection circuit plate of existing aluminum hull lithium battery coiling core is: an end of going up negative electrode 10 in the end welding of negative plate (Copper Foil); The other end of negative electrode 10 is welded on the brace 35 of block; One end of connecting band is welded on the rivet cap 20 of block; The other end of connecting band is welded on the protection circuit plate; To pass through electrode, rivet, three parts of connecting band from pole piece to the protection circuit plate, need welding 4 times, we can say existing electrode outward the technology of drawing have the deficiency that material quantity is many, operation is many, the quality control difficulty is big.
Existing aluminum hull li battery shell 2 is to adopt the way of Laser Welding with the sealing and fixing of block 1; With laser the slit fusing between 1 of shell 2 peristomes and block and integrally welded; The box hat lithium battery is except that wanting the laser welding block; Also want the laser welding negative, there is low, the low deficiency of solder yield of efficient in this method.
Summary of the invention
The objective of the invention is deficiency, a kind of electric core, battery and the electrode block sealing and fixing method that can simplify battery manufacturing process is provided to prior art.
For realizing above-mentioned purpose; The present invention has adopted following technical scheme: a kind of electric core comprises sealing shell and is fixed on the inner volume core of said sealing shell that said sealing shell comprises housing and block; Said housing has the peristome that is positioned at its top; Said block is fixed on said peristome, and said volume core has two electrodes, in two said electrodes one of at least with said block insulation and first electrode for cooperating with said block; Said block has with said first electrode and first runs through through hole one to one, and said first electrode penetrates said first to be run through through hole and be adhesively fixed with its wall surface of the hole.
Two electrodes can all cooperate with this block, and at this moment, first runs through through hole to there being two.Also can only there be one to cooperate in two electrodes with this block that is fixed in case top.Block can be plastic body, also can be metallic object.Block and peristome can weld fixing, also can be adhesively fixed.Housing is open top only, also can the top, the equal opening in bottom.When case top, the equal opening in bottom; Can only have one to cooperate with the block that is fixed in case top in two electrodes, another electrode cooperates with the block that is fixed in housing bottom, and the block that be fixed in case top, bottom this moment all has only one first to run through through hole; Also can all cooperate by two electrodes with the block that is fixed in case top; At this moment, the block first that is fixed in case top runs through through hole to there being two, and the block that is fixed in housing bottom does not have first to run through through hole.
Further, said block comprises base portion and from the one-body molded tubular body that goes out of the upper surface of said base portion, said first runs through through hole runs through said tubular body and base portion.Have the tubular body of height through setting, make first to run through through hole and have certain depth and be convenient to bonding.
Further; Described electric core; Also comprise insulator, said block is a metallic object, and said insulator has second and runs through through hole; Said insulator penetrates said first to be run through through hole and is adhesively fixed with its wall surface of the hole, and said first electrode penetrates said second to be run through through hole and be adhesively fixed with its wall surface of the hole.During manufacturing, can run through adhesive-applying between the wall surface of the hole of through hole, insulator seal, be bonded on this block at insulator outer surface and first; Run through at second of insulator and to clamp-on bonding agent in the through hole, the sealing of first electrode, be bonded on this block.
When two electrodes all cooperated with this block, the block correspondence had two tubular bodies.Can all be adhesively fixed with insulator in two tubular bodies, also can only one of them be adhesively fixed with insulator.The block and the first electrode insulated body separate and insulate.
Further, the bottom of said insulator is provided with horizontally extending bead down, and the lower surface bonds of said bead down and said base portion is fixed.
Further, said down bead geomery is measure-alike with said shell nozzle portion cross section inner wall shape, and said time bead cooperates with the inner surface of said shell nozzle portion.
Further; Described electric core; Also comprise insulating trip, said block is a metallic object, and said insulating trip has the 3rd and runs through through hole; Said insulating trip between said base portion lower surface and said volume core upper end, said first electrode penetrate successively the said the 3rd run through through hole, first run through through hole and with first run through the through hole wall surface of the hole and be adhesively fixed.Insulating trip is a kind of version of insulator, i.e. sheet insulator.
Further; Said insulating trip geomery and said shell nozzle portion cross section inner wall shape are measure-alike; The length and width size that insulating trip the 3rd runs through through hole less than said first run through through hole the length and width size; Said block cooperates with said shell nozzle portion, and said insulating trip is filled in the said peristome of housing, and the said the 3rd runs through through hole occupy first and run through in the middle of the through hole.
Further, the block of described electric core is a plastic body, said first electrode directly with said first run through through hole wall surface of the hole be adhesively fixed.During manufacturing, can run through at first of block and clamp-on bonding agent in the through hole, seal first electrode, be bonded on this block.
Further; Said block also comprises from the one-body molded annular auxiliary section that goes out of said base portion; Said base portion and auxiliary section constitute cylindrical body, and said auxiliary section cooperates with said peristome socket, at socket place; Said auxiliary section and peristome correspondence have first matching surface and second matching surface, and said first matching surface and second matching surface are adhesively fixed.Have the auxiliary section of height through setting, make first matching surface and second matching surface have certain coincidence (applying) length and be convenient to bonding.
The mode that socket cooperates can be: peristome stretches into cylindrical body, and at this moment, the outer surface of peristome and the inner surface of auxiliary section are adhesively fixed; Peristome is inserted in cylindrical body, and at this moment, the inner surface of peristome and the outer surface of auxiliary section are adhesively fixed; Or peristome and the socket of cylindrical body annular, at this moment, surface, the medial and lateral of peristome is fixed with the medial and lateral surface adhesion of auxiliary section.
Further; Said auxiliary section has ring-shaped groove; Said peristome stretches into said groove; The surface, medial and lateral that said first matching surface is said groove, the surface, medial and lateral that said second matching surface is said peristome, the surface, medial and lateral of said groove is fixed with the medial and lateral surface adhesion of said peristome respectively.
Further, said first matching surface and the second matching surface correspondence have the auxiliary fixing position, and said auxiliary fixing position is welded or is clasped.This welding can be chosen several pads as the auxiliary fixing position at matching surface, realizes auxiliary fixing through welding manner.This is clasped and as on first mating surface, convexity being set groove is set on second mating surface, or on first mating surface groove is set and convexity is set on second mating surface, or on first and second matching surface, selects several somes indentation distortion.
Further, form groove between said base portion, auxiliary section and the tubular body, said base portion has recessed pit, and said groove and pit are communicated with.Groove can hold the substrate of battery protection wiring board, and pit can hold the circuit elements device of protection circuit plate.
Further, said sealing shell also comprises another block, and said housing has another peristome that is positioned at its bottom, and said another block is adhesively fixed with said another peristome.These two blocks and housing constitute said sealing shell, the volume core by sealing and fixing in this sealing shell.
A kind of battery comprises protection circuit plate and electric core, and said protection circuit plate has the positive and negative electrode input, and said protection circuit plate and said block are fixed, and two electrodes of said electric core are connected with said positive and negative electrode input respectively.
Further, said protection circuit plate has the 4th and runs through through hole, and said tubular body or insulator penetrate the said the 4th to be run through through hole and be adhesively fixed with its wall surface of the hole.When block was metallic object, insulator penetrates the 4th to be run through through hole and is adhesively fixed with it.When block was plastic body, tubular body penetrates the 4th to be run through through hole and is adhesively fixed with it.
A kind of electrode block sealing and fixing method of battery, said block has first and runs through through hole, and,
The block of battery and the housing socket of battery are cooperated, and be adhesively fixed at socket place;
Making first electrode of battery roll core penetrate said first runs through through hole and is adhesively fixed with its wall surface of the hole.
Further; When said block is metallic object; Said first run through be inserted in the through hole have second run through through hole insulator; The wall surface of the hole that said insulator and said first runs through through hole is adhesively fixed; Make first electrode penetrate said second and run through through hole and be adhesively fixed with its wall surface of the hole, or between said block lower surface and said volume core upper end, lay have the 3rd run through through hole insulating trip, make said first electrode penetrate successively the said the 3rd run through through hole, first run through through hole and with first run through through hole wall surface of the hole be adhesively fixed.
The invention has the beneficial effects as follows: 1) utilize the technology that is adhesively fixed, realize that block and fixing, the electrode of metal shell fix with block, greatly simplified battery manufacturing process.2) electrode of volume core directly connects the protection circuit plate, has reduced material and operation that electrode is drawn, is convenient to carry out quality control.3) can process or process with the mode of economical with materials with thin metal material with plastics have cylindrical body, the block of tubular body; Strengthen sealing height, and the sealing degree of depth of electrode and block of block and metal shell peristome, be convenient to use the adhering and sealing technique for fixing.
Description of drawings
Fig. 1 is the structural representation of existing lithium battery;
Fig. 2 A is the first embodiment schematic top plan view;
Fig. 2 B is the generalized section of first embodiment along the A-A direction of Fig. 2 A;
Fig. 2 C is the first embodiment protection circuit plate schematic top plan view;
Fig. 2 D is the schematic top plan view of the another kind of auxiliary fixing mode of first embodiment;
Fig. 2 E is the generalized section of the another kind of auxiliary fixing mode of first embodiment along the B-B direction of Fig. 2 D;
Fig. 3 A is the second embodiment schematic top plan view;
Fig. 3 B is the generalized section of second embodiment along the A-A direction of Fig. 3 A;
Fig. 3 C is the second embodiment protection circuit plate schematic top plan view;
Fig. 4 A is the 3rd embodiment schematic top plan view:
Fig. 4 B is the generalized section of the 3rd embodiment along the A-A direction of Fig. 4 A;
Fig. 4 C is the 3rd embodiment protection circuit plate schematic top plan view;
Fig. 5 A is the 4th embodiment schematic top plan view:
Fig. 5 B is the generalized section of the 4th embodiment along the A-A direction of Fig. 5 A;
Fig. 5 C is the 4th embodiment protection circuit plate schematic top plan view;
Fig. 6 A is the 5th embodiment schematic top plan view:
Fig. 6 B is the generalized section of the 5th embodiment along the A-A direction of Fig. 6 A;
Fig. 6 C is the 5th embodiment protection circuit plate schematic top plan view.
Embodiment
Combine accompanying drawing that the present invention is done further explain through embodiment below.
Battery battery core comprises block 1, metal shell 2, has the volume core 7 and the electrolyte of two electrodes 10, and block 1 fixes the formation sealing shell with metal shell 2, and electrolyte is sealed in this sealing shell with the volume core.
First embodiment:
A kind of lithium battery cap; Shown in Fig. 2 A, 2B, 2C, the block material is a metal, and block 1 comprises the cylindrical body with a base portion 4 and auxiliary section 44; Base portion 4 one-body molded go out two have first run through through hole 9 tubular body 3; Block is filled in the peristome 8 at metal shell 2 tops, and block cylindrical body outer surface 14 has certain height, outer surface 14 is fitted with metal shell 2 peristomes 8 inner surfaces 19 and has enough overlapping (applying) length and is convenient to bonding; On two surfaces 14 that fit, be coated with bonding agent between 19, seal block 1, be adhesively fixed at metal shell 2 peristomes 8.
Two have second run through through hole 25 insulator 12 fill in two tubular bodies 3 of block respectively first run through through hole 9; First runs through through hole 9 has certain degree of depth; Make the wall surface of the hole 38 that insulator 12 outer surfaces 26 and block first run through through hole fit and have enough overlapping (applying) degree of depth; And on the two sides that fits 26, be coated with bonding agent between 38; Insulator 12 sealing, be adhesively fixed on block, second of two insulators 12 run through two electrodes 10 that through hole 25 is inserted in volume core 7 respectively, cap sealed, be fixed on metal shell 2 peristomes 8 after; Run through through hole 25 at two second and clamp-on bonding agent, seal two electrodes 10, be adhesively fixed on block 1.The effect of insulator 12 is to insulate electrode 10 mutually with metal nut cap 1.
The bottom of insulator 12 has horizontally extending bead 27 down; This time bead 27 can strengthen the contact area of insulator 12 and block 1; Following bead 27 is fitted in the lower surface of block base portion 4, adhesive-applying between following bead and block base portion 4 lower surfaces (lower surface of also promptly blocking a shot), the constant intensity of raising insulator 12 and block 1; Following bead 27 also has and separates contacting of the top of rolling up core 7 and block base portion 4 lower surfaces, prevents to roll up core 7 by metal nut cap 1 short circuit.
See Fig. 2 A, 2B, 42 welding of two points, further fixing block 1 and metal shell 2 are selected in and the place 30 of exposing adjacent at block 1 and metal shell 2 (also promptly on the top of shell nozzle portion top, block).Can see that also Fig. 2 D, 2E take another kind of auxiliary fixing mode; Select inwardly indentation distortion of two points 42 on the top of the peristome 8 of housing 2; Block 1 and metal shell 2 also can be further fixed in the together inwardly indentation distortion of the peristome of the position housing 2 42, block top.
In this execution mode; Block has cylindrical body and tubular body, and cylindrical body comprises base portion 4 and annular auxiliary section 44, and tubular body 3 makes progress one-body moldedly to go out from base portion 4 upper surfaces; First runs through through hole runs through this tubular body and base portion up and down, and two first run through respectively corresponding two electrodes of through hole.
In this execution mode, form groove 33 between base portion, auxiliary section and two tubular bodies, this groove holds the circuit elements device 37 of protection circuit plate.The protection circuit plate has two the 4th and runs through through hole 40, is respectively applied for to entangle two insulators 12.
In this execution mode; Block has two tubular bodies 3 and two insulators 12; Block can have two tubular bodies 3 and insulator 12 only as required in fact, and insulator 12 is fixed on by adhering and sealing on one of them tubular body 3 of block, and an electrode passes second of this insulator 12 and runs through through hole 25; Second run through through hole 25 and clamp-on bonding agent at this, be fixed on second to these electrode 10 adhering and sealings and run through through hole 25; Another electrode can directly penetrate first of another tubular body 3 and run through through hole 9, first runs through through hole 9 and clamp-ons bonding agent at this, is fixed on first to the direct adhering and sealing of another electrode and runs through through hole 9.Because electric core is as long as electrode of assurance and sealing shell insulation are just passable, another electrode can be connected as a single entity with sealing shell, also just need not insulate specially.
In this execution mode, block mainly is adhesively fixed through bonding agent with shell nozzle portion, and can carry out auxiliary fixing through modes such as welding or indentation distortion.
Second embodiment:
A kind of battery cap; Shown in Fig. 3 A, 3B, 3C, 1 material of blocking a shot is a metal, and block 1 is for having the cylindrical body of a base portion 4; Base portion 4 one-body molded go out two have first run through through hole 9 tubular body 3; The peristome 8 that block 1 entangles metal shell, block cylindrical body inner surface 15 has certain degree of depth, inner surface 15 is fitted with metal shell peristome 8 outer surfaces 18 and has enough overlapping (applying) length; On two surfaces 15 that fit, be coated with bonding agent between 18, seal block 1, be adhesively fixed at metal shell 2 peristomes 8.
Have the 3rd run through through hole 46 insulating trip 45 lower surface that is placed in block base portion 4 and the upper end of rolling up core 7 between; Two electrodes penetrate the 3rd of insulating trip respectively successively to be run through first of through hole 46, tubular body 3 and runs through through hole 9; First runs through through hole 9 has certain degree of depth; Make electrode 10 and first run through through hole 9 and have enough degree of depth that overlaps; Cap sealed, be fixed on metal shell 2 peristomes 8 after, run through through hole 9 at two first and clamp-on bonding agent, two electrodes 10 sealing, be adhesively fixed on the block 1.
Insulating trip 45 geomeries and shell nozzle portion cross section inner wall shape are measure-alike; The length and width size that insulating trip the 3rd runs through through hole 46 less than first run through through hole 9 the length and width size; When block 1 is inserted in shell nozzle portion 8, when insulating trip 45 was filled in shell nozzle portion 8 inner surfaces simultaneously, the 3rd runs through through hole 46 occupy first and runs through (seeing Fig. 4 A) in the middle of the through hole 9; This is in order to give electrode 10 location, makes electrode 10 not run through through hole 9 wall surface of the hole and contact with first.There is certain intensity can keep straight though electrode 10 is very thin; As long as locate in the insulating trip position; Do not run through through hole 9 wall surface of the hole and contact with first; Bonding agent clamp-on first run through in through hole 9 processes with later dry run in, still can continue to keep electrode 10 not run through through hole 9 wall surface of the hole and contact with first.
In this execution mode; The lower surface of base portion extends annular auxiliary section 43 downwards; The peristome 8 of metal shell is entangled in this auxiliary section 43; The outer surface socket of the inner surface of auxiliary section 43 and peristome 8 cooperates also and is adhesively fixed, and this inner surface and outer surface can be selected several means of spot welds as previously mentioned, realizes blocking a shot and the auxiliary fixing of metal shell.
This execution mode is with a difference of first embodiment: in this execution mode, block entangles the peristome of metal shell; And in first execution mode, the peristome of metal shell entangles block.
The 3rd embodiment:
A kind of battery cap, shown in Fig. 4 A, 4B, 4C, 1 material of blocking a shot is plastics; Block 1 is for having the cylindrical body of a base portion 4; Base portion 4 one-body molded go out two have first run through through hole 9 tubular body 3, block also has a groove that rounds 16, groove 16 is inserted in metal shell 2 peristomes 8; Groove 16 has certain degree of depth; Surface, the relative medial and lateral of groove 14,15 is fitted with metal shell peristome inner surface 19, outer surface 18 respectively and have enough overlapping (applyings) degree of depth, on two surfaces 14,19 and 15 that fit, be coated with bonding agent between 18,1 seal, be adhesively fixed at metal shell 2 peristomes 8 blocking a shot.This method can all contact the interior lateral surface of metal shell peristome and adhesive-applying with block, and block is more firm with being adhesively fixed of metal shell.
Block a shot two first and run through through hole 9 and have certain degree of depth; Make two first run through through hole 9 entangle respectively the volume core 7 two electrodes 10 and have enough coincidence degree of depth; Cap sealed, be fixed on metal shell peristome 8 after; Run through in the through hole 9 at two first and to clamp-on bonding agent, 10 sealings of two electrodes, be adhesively fixed on the block 1.
On block, form pit 36 and groove 33, pit 36 holds the circuit elements device 37 of protection circuit base board lower surface, and groove 33 holds the substrate of protection circuit plate 34.Pit 36 recessed base portions 4, and pit 36 is communicated with groove 33.
In this execution mode, block is provided with the groove 16 of annular towards a side of metal shell, and the peristome of metal shell stretches into this groove, the surface, medial and lateral of metal shell peristome is all contacted with groove and is adhesively fixed.
This execution mode is with a difference of first and second embodiment: in this execution mode, and the inside and outside both side surface that block entangles the peristome of metal shell through groove, inside and outside two side surfaces of peristome all fit with block; And in first execution mode, the peristome of metal shell entangles block, and in second execution mode, block entangles the peristome of metal shell, and the peristome of metal shell has only a side surface and block side surface to fit.
The 4th embodiment:
A kind of battery cap; Shown in Fig. 5 A, 5B, 5C; 1 material of blocking a shot is a metal; Block 1 can adopt the conventional laser welding method with the sealing and fixing of metal shell 2, and electrode 10 with the mode of the sealing and fixing of block 1 is: cover plate 41 (being equivalent to aforesaid base portion 4) go up one-body molded go out two have first run through through hole 93, two of tubular bodies have second run through through hole 25 insulator 12 fill in first of two tubular bodies 3 of block respectively and run through through hole 9; First runs through through hole 9 has certain degree of depth; Make insulator 12 outer surfaces 26 and block first run through through hole 9 inner surfaces 38 and fit and have enough overlapping (applyings) degree of depth, and on the two sides that fits 26, be coated with bonding agent between 38, insulator 12 sealings, be adhesively fixed and blocking a shot on 1; Two second of block insulator 12 run through two electrodes 10 that through hole 25 entangles the volume core respectively; Cap sealed, be fixed on metal shell peristome 8 after, run through through hole 25 at two second and clamp-on bonding agent, two electrodes 10 sealing, be adhesively fixed on block 1.
Insulator 12 has the following bead 27 of extending in lower horizontal; Following bead 27 geomeries and shell nozzle portion cross section inner wall shape are measure-alike; Can fill in shell nozzle portion 8; And match with shell nozzle portion inner surface, following bead 27 is fitted in cover plate 41 lower surfaces, adhesive-applying between following bead and cover plate 41 lower surfaces.In this case; Because following bead 27 can be given insulator 12 location of one; Make insulator 12 be positioned at first run through through hole 9 the centre, it is little more that insulator 12 can run through through hole 9 than block first, the outer surface 26 of insulator is not that the wall surface of the hole 38 that runs through through hole with block first is close to and is closed but gapped; Insulator 12 cover top electrodes 10 and fill in first run through through hole 9 after; Run through to clamp-on bonding agent and run through through hole 25 second between the wall surface of the hole 38 of through hole at insulator 12 outer surfaces 26 and block first and clamp-on bonding agent, can make electrode 10 sealing and fixing equally on insulator 12, insulator 12 sealing and fixing are on block.In this way, clamp-oning bonding agent to block only needs once, once just can be fixed on insulator 12, electrode 10 adhering and sealings on the block.
In this execution mode, block rests on the end face of metal shell peristome, and can be through the mode sealing and fixing of laser welding.
The 5th embodiment:
A kind of battery cap; Shown in Fig. 6 A, 6B, 6C, 1 material of blocking a shot is plastics, and block 1 is for having the cylindrical body of a base portion 4; Base portion 4 one-body molded go out two have first run through through hole 9 tubular body 3; Block is filled in metal shell 2 peristomes 8, and block cylindrical body outer surface 14 has certain height, outer surface 14 is fitted with metal shell 2 peristomes 8 inner surfaces 19 and has enough overlapping (applying) length; On two surfaces 14 that fit, be coated with bonding agent between 19, seal block 1, be adhesively fixed at metal shell 2 peristomes 8.
Block a shot two first and run through through hole 9 and have certain degree of depth; Make two first run through through hole 9 be inserted in respectively the volume core 7 two electrodes 10 and have enough coincidence degree of depth; Cap sealed, be fixed on metal shell peristome 8 after; Run through through hole 9 at two first and clamp-on bonding agent, seal two electrodes 10, be adhesively fixed on block 1.
Mold several pits 31 at the block outer surface, be pressed into 31 li of pits to metal shell 2 corresponding parts 32.Certainly, also can mold a hollow toroid groove 31, be pressed into 31 li of hollow toroid grooves to metal shell 2 corresponding parts 32 at the outer surface of block.Promptly can form convexity, and form pit,, realize the auxiliary fixing of block and metal shell through being clasped of protruding and pit at the block outer surface through inner surface at the metal shell peristome.
It is fluted 33 that block forms, and is used to hold protection circuit plate 34.Protection circuit plate 34 has two the 4th and runs through through hole 40, is used to entangle block tubular body 3.
In this execution mode; Metal shell has two peristomes and corresponding two blocks up and down, and two electrodes all cooperate with the block that is fixed in case top, at this moment; The block first that is fixed in case top runs through through hole to there being two, and the block that is fixed in housing bottom does not have first to run through through hole.Certainly, also can two only have in the electrode one to cooperate with the block that is fixed in case top, another electrode cooperates with the block that is fixed in housing bottom, and the block that be fixed in case top, bottom this moment all has only one first to run through through hole.
First, second, third and fourth, the protection circuit plate of five embodiments can all have the 4th and run through through hole 40; Protection circuit plate the 4th runs through through hole 40 through being inserted in tubular body 3 or insulator 12 is able to fix; And, make the fixing more firm of protection circuit plate and tubular body 3 or insulator 12 at its contact-making surface adhesive-applying.
Succinct for lines, Fig. 2 A, 3A, 4A, 5A, 6A do not draw the protection circuit plate, represent the protection circuit plate with Fig. 2 C, 3C, 4C, 5C, 6C in addition.
First, second, third and fourth, the tubular body of five embodiments 3 conveniently all is drawn as right angle side's shape for drawing, tubular body 3 can be fillet side's shape as required in fact, correspondingly insulator 12 is fillet side's shape.
Block for metal material; Like first, fourth embodiment, block can have two tubular bodies 3 and an insulator 12 is only arranged as required, and insulator 12 is fixed on tubular body 3 of block by adhering and sealing; An electrode 10 passes second of this insulator 12 and runs through through hole 25; Second run through through hole 25 and clamp-on bonding agent at this, just be fixed on this to these electrode 10 adhering and sealings and second run through through hole 25, another electrode can directly penetrate first of another tubular body 3 and run through through hole 9; First run through through hole 9 and clamp-on bonding agent at this, be fixed on this to the direct adhering and sealing of another electrode and first run through through hole 9.Because electric core is as long as electrode of assurance and sealing shell insulation are just passable, another electrode can be connected as a single entity with sealing shell, also just need not insulate specially.
To metal material; Making the cylindrical body structure to block, is in order to have the block of enough height side surfaces (first matching surface) with thin material manufacture, to run through through hole to block and process the tubular body structure; Be in order to process the through hole that runs through equally with enough degree of depth with thin material; Make the adhering and sealing fixing means be able to use,, the space that holds the protection circuit plate can also be provided because block has cylindrical body, tubular body structure.To plastic material, block is processed cylindrical body, the tubular body structure can be saved material.
A kind of lithium battery; Comprise protection circuit plate, lithium battery electric core; The protection circuit plate has two the 4th and runs through through hole 40; Two the 4th run through through hole 40 and are inserted in two tubular bodies 3 or two insulators 12 respectively, and at its contact-making surface adhesive-applying, make the protection circuit plate be fixed on tubular body 3 or insulator 40.
The positive and negative electrode 10 of electricity core is connected respectively to the both positive and negative polarity input of protection circuit plate.
A kind of electrode block sealing and fixing method: block has the side surface of certain altitude, and side surface and metal shell peristome side surface fit and be coated with bonding agent betwixt, cap sealed, be adhesively fixed at the metal shell peristome; Block can have first of two certain depths and run through through hole; When the block material is metal; Two first run through through hole and are inserted in two respectively and have second and run through through hole and have the insulator of enough height; The wall surface of the hole that insulator outer surface and first runs through through hole fits and is coated with bonding agent betwixt, and insulator seal, be adhesively fixed on block, two electrodes penetrate second respectively and run through through hole; Run through through hole second and clamp-on bonding agent; Seal electrode, be adhesively fixed on block, or between base portion lower surface (lower surface that is equivalent to block a shot) and volume core upper end, lay have the 3rd run through through hole insulating trip, make two electrodes penetrate the 3rd respectively successively and run through through hole, first and run through through hole; Run through through hole first and clamp-on bonding agent, seal electrode, be adhesively fixed on block; When the block material was plastics, two electrodes penetrated two first respectively and run through through hole, ran through through hole first and clamp-oned bonding agent, seal electrode, be adhesively fixed on block.
That plastics, insulator, bonding agent require is high temperature resistant, electrical insulation capability good and electrolyte resistance corrodes, as being polypropylene (PP).
Lithium battery of the present invention comprises quadrate lithium battery, cylindrical lithium battery, the shape side of the being respectively body cylindrical body of block, cylindrical tube shape body.
Above content is to combine concrete execution mode to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (15)
1. electric core; Comprise sealing shell and be fixed on the inner volume core of said sealing shell; Said sealing shell comprises housing and block, and said housing has the peristome that is positioned at its top, and said block is fixed on said peristome; Said volume core has two electrodes; In two said electrodes one of at least with said block insulation and first electrode for cooperating with said block, it is characterized in that: said block has with said first electrode and first runs through through hole one to one, said first electrode penetrates said first to be run through through hole and is adhesively fixed with its wall surface of the hole.
2. electric core as claimed in claim 1 is characterized in that: said block comprises base portion and from the one-body molded tubular body that goes out of the upper surface of said base portion, said first runs through through hole runs through said tubular body and base portion.
3. electric core as claimed in claim 2; It is characterized in that: also comprise insulator; Said block is a metallic object; Said insulator has second and runs through through hole, and said insulator penetrates said first to be run through through hole and be adhesively fixed with its wall surface of the hole, and said first electrode penetrates said second to be run through through hole and be adhesively fixed with its wall surface of the hole.
4. electric core as claimed in claim 3 is characterized in that: the bottom of said insulator is provided with horizontally extending bead down, and the lower surface bonds of said bead down and said base portion is fixed.
5. electric core as claimed in claim 2; It is characterized in that: also comprise insulating trip; Said block is a metallic object; Said insulating trip has the 3rd and runs through through hole, said insulating trip between said base portion lower surface and said volume core upper end, said first electrode penetrate successively the said the 3rd run through through hole, first run through through hole and with said first run through through hole wall surface of the hole be adhesively fixed.
6. electric core as claimed in claim 2 is characterized in that: said block is a plastic body, said first electrode directly with said first run through through hole wall surface of the hole be adhesively fixed.
7. electric core as claimed in claim 2; It is characterized in that: said block also comprises from the one-body molded annular auxiliary section that goes out of said base portion; Said base portion and auxiliary section constitute cylindrical body, and said auxiliary section cooperates with said peristome socket, at socket place; Said auxiliary section and peristome correspondence have first matching surface and second matching surface, and said first matching surface and second matching surface are adhesively fixed.
8. electric core as claimed in claim 7; It is characterized in that: said auxiliary section has ring-shaped groove; Said peristome stretches into said groove; The surface, medial and lateral that said first matching surface is said groove, the surface, medial and lateral that said second matching surface is said peristome, the surface, medial and lateral of said groove is fixed with the medial and lateral surface adhesion of said peristome respectively.
9. electric core as claimed in claim 7 is characterized in that: said first matching surface and the second matching surface correspondence have the auxiliary fixing position, and said auxiliary fixing position is welded or is clasped.
10. electric core as claimed in claim 7 is characterized in that: form groove between said base portion, auxiliary section and the tubular body, said base portion has recessed pit, and said groove and pit are communicated with.
11. electric core as claimed in claim 1 is characterized in that: said sealing shell also comprises another block, and said housing has another peristome that is positioned at its bottom, and said another block is adhesively fixed with said another peristome.
12. battery; Comprise the protection circuit plate; Said protection circuit plate has the positive and negative electrode input; It is characterized in that: also comprise any described electric core among the claim 1-11, said protection circuit plate and said block are fixed, and two electrodes of said electric core are connected with said positive and negative electrode input respectively.
13. battery as claimed in claim 12 is characterized in that: said protection circuit plate has the 4th and runs through through hole, and said tubular body or insulator penetrate the said the 4th to be run through through hole and be adhesively fixed with its wall surface of the hole.
14. the electrode of battery block sealing and fixing method, it is characterized in that: said block has first and runs through through hole, and,
The block of battery and the housing socket of battery are cooperated, and be adhesively fixed at socket place;
Making first electrode of battery roll core penetrate said first runs through through hole and is adhesively fixed with its wall surface of the hole.
15. sealing and fixing method as claimed in claim 14; It is characterized in that: when said block is metallic object; Said first run through be inserted in the through hole have second run through through hole insulator; The wall surface of the hole that said insulator and said first runs through through hole is adhesively fixed, makes said first electrode penetrate said second and run through through hole and be adhesively fixed with its wall surface of the hole; Or between said block lower surface and said volume core upper end, lay have the 3rd run through through hole insulating trip, make said first electrode penetrate successively the said the 3rd run through through hole, first run through through hole and with said first run through the through hole wall surface of the hole and be adhesively fixed.
Priority Applications (1)
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| CN2011104552765A CN102569679A (en) | 2011-12-30 | 2011-12-30 | Battery core, battery and method for sealing and fixing electrode and cap of battery |
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| CN2011104552765A CN102569679A (en) | 2011-12-30 | 2011-12-30 | Battery core, battery and method for sealing and fixing electrode and cap of battery |
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| CN103682185A (en) * | 2012-08-31 | 2014-03-26 | 丁振荣 | Battery cell, battery and electrode cap sealing and fixing method of battery |
| CN106252759A (en) * | 2016-09-28 | 2016-12-21 | 黄桂花 | Battery refresh device and vehicle power supply |
| CN107681088A (en) * | 2017-11-06 | 2018-02-09 | 惠州亿纬锂能股份有限公司 | A kind of blast resistance construction and the USB rechargeable batteries using the blast resistance construction |
| CN108987624A (en) * | 2018-09-03 | 2018-12-11 | 张美芳 | Lithium battery suitable for harbour machinery |
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Application publication date: 20120711 |