CN100555712C - Secondary cell - Google Patents

Secondary cell Download PDF

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Publication number
CN100555712C
CN100555712C CNB2006101098110A CN200610109811A CN100555712C CN 100555712 C CN100555712 C CN 100555712C CN B2006101098110 A CNB2006101098110 A CN B2006101098110A CN 200610109811 A CN200610109811 A CN 200610109811A CN 100555712 C CN100555712 C CN 100555712C
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China
Prior art keywords
battery
electrode terminal
secondary cell
negative electrode
positive electrode
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CNB2006101098110A
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Chinese (zh)
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CN1921178A (en
Inventor
竹下俊夫
宫岛洋一
佐藤浩明
高桥淳
新谷胜一
田代圭
长岛修
神谷秀树
青木久
冈田敏之
佐藤良弘
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Sony Corp
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Sony Corp
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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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention discloses a kind of secondary cell that is used for electronic equipment, it is installed in the electronic equipment, thereby can supply electric power to electronic equipment.This secondary cell comprises: battery unit, and wherein positive electrode, negative electrode and electrolyte are contained in the packaging part, and draw respectively from the same side of packaging part from the positive electrode terminal and the negative electrode terminal of positive electrode and negative electrode; The metal battery shell wherein is formed with and inserts battery unit and battery unit is contained in one of them opening, thereby the side of drawing positive electrode terminal and negative electrode terminal is towards open side; And lid, make by synthetic resin, wherein, in case positive electrode terminal portion and negative electrode terminal portion are connected to positive electrode terminal and negative electrode terminal and toward the outer side, just positive electrode terminal portion and the negative electrode terminal portion to the electronic equipment electrode to be connected set, and live the opening of battery case with capping plug.

Description

Secondary cell
CROSS-REFERENCE TO RELATED APPLICATIONS
Theme that the present invention comprises relates on August 12nd, 2005 and speciallys permit the Japanese patent application JP 2005-234939 that submit in the Room to Japanese patent application JP 2005-234938 and on August 12nd, 2005 of submitting to the Japan special permission Room in the Japanese patent application JP 2005-234936 of Japan's special permission Room submission, on August 12nd, 2005 to Japan, and its full content is hereby expressly incorporated by reference.
Technical field
The present invention relates to have the secondary cell of electrode body, this electrode body is as the electric energy producing component, be contained in the packaging part (pack), can from secondary cell, export the electric power that produces by electrode body, for example lithium rechargeable battery and lighium polymer secondary battery by the pair of positive and negative terminal.
Background technology
In recent years, increase sharply for the demand of mancarried electronic aid, these electronic equipments comprise information equipment such as notebook personal computer, such as the mobile communication equipment and the video camera of mobile phone.Such as the closed small-sized secondary batteries of nickel-cadmium cell, Ni-MH battery and lithium ion battery through being commonly used for the power supply of this type of electronic equipment.Especially, lithium rechargeable battery is used in various occasions, has the most of feature such as high voltage, high-energy-density and lightweight etc.
Specifically, countermeasure as the fluid leakage problems that occurs in the liquid base electrolytic solution, for instance, a kind of so-called polymer lithium ion secondary battery has been proposed, it uses the gelatinous polymer film as electrolyte, this gelatinous polymer film has and is full of the non-aqueous solution electrolysis polymer at molten night, perhaps uses all solid state electrolyte.
In order to satisfy the requirement of various electronic equipments in recent years, as miniaturization, lighting and thin-long, this polymer lithium ion secondary battery further develops, and except such as the such battery characteristics of high-energy-density and lightweight, also has the high feature of the cell shapes degree of freedom.
Usually; in this battery; for example; as shown in figure 37; be connected substrate 302 by the stacked cell unit of making of cell device (single cell) 301 with what be provided with protective circuit and terminal; be contained in a pair of upper and lower plastic casing 303,304, thereby formed battery pack 300 (as an example, referring to JP-A-2002-8606 (patent documentation 1)).On battery pack 300, be pasted with outside labeling, the joint that it not only can reinforced plastics housing 303,304 can also display of commodity information, thereby plastic casing 303,304 can be banded together.
When such battery pack 300 was contained in the battery compartment of electronic equipment, an end of each plastic casing 303,304 engaged with the lock pawl that battery pack 300 can be remained in the battery compartment.
Summary of the invention
In order to solve the problems referred to above of correlation technique cell package part, according to embodiments of the invention, a kind of secondary cell is provided, it has with the polymer lithium ion secondary battery most advantages of the secondary cell that is representative, and can suitably satisfy the requirement of electronic equipment in recent years, as miniaturization, lighting and thin-long.
In order to address the above problem, according to embodiments of the invention, provide a kind of secondary cell that is used for electronic equipment, it is installed in the electronic equipment, therefore can supply electric power to electronic equipment.This secondary cell is provided with: battery unit, and wherein, positive electrode, negative electrode and electrolyte are contained in the packaging part, and draw respectively from the same side of packaging part from the positive electrode terminal and the negative electrode terminal of positive electrode and negative electrode; The metal battery shell is formed with wherein that the power supply pool unit inserts and battery unit is held wherein opening, thereby the side of drawing positive electrode terminal and negative electrode terminal is towards open side; And the lid of making by synthetic resin, wherein, in case positive electrode terminal portion and negative electrode terminal portion are connected to positive electrode terminal and negative electrode terminal and face the outside, just positive electrode terminal portion and the negative electrode terminal portion to the electronic equipment electrode to be connected set, and live the opening of battery case with capping plug.
In addition, in order to address the above problem, according to the embodiment of the invention, provide a kind of secondary cell that is used for electronic equipment, it is installed in the electronic equipment, thereby can supply electric power to electronic equipment.This secondary cell is provided with: battery unit, and wherein, positive electrode, negative electrode and electrolyte are contained in the packaging part, and draw respectively from the same side of packaging part from the positive electrode terminal and the negative electrode terminal of positive electrode and negative electrode; The metal battery shell is formed with wherein that the power supply pool unit inserts and battery unit is held wherein opening, thereby the side of drawing positive electrode terminal and negative electrode terminal is towards open side; And the lid of making by synthetic resin, wherein,, just the portion of terminal to the electronic equipment electrode to be connected being set in case portion of terminal is connected to positive electrode terminal and negative electrode terminal and faces the outside, this lid engages with opening to clog battery case; And the outside labeling that insulate, have interarea portion on the battery case outer peripheral edges to be pasted and the curled portion that is used for the bottom surface sections on the curling opening opposite flank.
According to the secondary cell of the embodiment of the invention,, can be easy to realize assembling by being assembled together mutually with the metal battery shell with by the lid that synthetic resin is made.In addition, form battery case by using metal material to carry out pull and stretch (deep drawing), can realize simultaneously that thin-long and intensity guarantee, thereby the secondary cell that can satisfy electronic equipment requirement (as miniaturization, lighting and thin-long) can be provided.In addition, by the battery cover that processing metal battery case or molded formation are made by synthetic resin, can be easy to form an external shape, in the time of in the battery installation section that secondary cell is installed to electronic equipment, this external shape becomes installation end.
In addition, secondary cell according to the embodiment of the invention, secondary cell main body by structure metal battery shell, can realize simultaneously that not only thin-long and mechanical strength guarantee, can also form the junction surface by the two ends that will not paste the bottom surface sections of outside labeling, it engages with the fastener that is arranged on the electronic equipment side, even by this fastener repeated friction, also can avoid taking place the situation that outside labeling is damaged or break away from.And, the sticking area of the outside labeling by will sticking on the battery case bottom surface sections forms the corresponding zone, position with each portion of terminal of secondary cell positive electrode and negative electrode, even secondary cell is installed on the opposite way round of electronic equipment or battery charger, because the outside labeling of insulation that sticks on the secondary cell bottom surface sections contacts with the electrode of electronic equipment or battery charger side, wherein, this electrode is provided with corresponding to the position of each portion of terminal of positive electrode and negative electrode, thereby can avoid taking place the short circuit that the direct contact owing to bottom surface sections causes.
In addition, according to the secondary cell of the embodiment of the invention, by the outside labeling on the lid zone beyond the formation zone of each portion of terminal of positive electrode and negative electrode is curled, the assembling intensity between can strengthening battery case and covering.Therefore, owing to need not to protrude in the upper face side of battery case with being used for battery case with the fastener that lid engages, thereby can guarantee to assemble intensity, and can not influence the planarization or the outward appearance of secondary cell.
Description of drawings
Figure 1A and Figure 1B show the oblique view of the electronic equipment example that uses secondary cell of the present invention;
Fig. 2 shows the oblique view of using secondary cell of the present invention;
Fig. 3 shows the detailed oblique view of using secondary cell of the present invention;
Fig. 4 A and Fig. 4 B show and use the oblique view that secondary cell of the present invention is installed in the state in the electric device battery accommodation section;
Fig. 5 A and Fig. 5 B show the oblique view of another example of using secondary cell of the present invention;
Fig. 6 shows the end view of using the state in the outside set battery installation section that secondary cell of the present invention is installed in electronic equipment etc.;
Fig. 7 is the oblique view of the battery case that inserts of battery unit;
Fig. 8 A and Fig. 8 B show the end view of the state in the fastener of outside set battery installation section that electrode part is arranged on electronic equipment etc.;
Fig. 9 A to Fig. 9 C shows the view of the secondary cell that is pasted with outside labeling, and wherein, Fig. 9 A is that rearview, Fig. 9 B are vertical views and Fig. 9 C is a front view;
Figure 10 shows the viewgraph of cross-section of the secondary cell of battery cover confined state;
Figure 11 shows the detailed oblique view of battery unit;
Figure 12 shows the viewgraph of cross-section of battery unit package structure;
The end view that engages between the plus or minus electrode terminal that Figure 13 A and Figure 13 B show battery unit and the plus or minus electrode nipple;
Figure 14 shows the end view at the junction surface between plus or minus electrode terminal and the plus or minus electrode slice;
Figure 15 A and Figure 15 B show different based on function, the oblique view of the secondary cell that the arrangement of positive and negative electrode portion of terminal is also different;
Figure 16 A and Figure 16 B show different based on function, the oblique view of another secondary cell that the arrangement of positive and negative electrode portion of terminal is also different;
Figure 17 A to Figure 17 C shows the oblique view of another example of using secondary cell of the present invention;
Figure 18 A to Figure 18 L shows the process chart of the manufacture process of using secondary cell of the present invention;
Figure 19 shows the end view of the battery unit, keeper and the substrate that place anchor clamps;
Figure 20 shows the oblique view that is inserted into the battery unit in the battery case;
Figure 21 A to Figure 21 C shows the viewgraph of cross-section of state of the battery unit of battery case inside;
Figure 22 A to Figure 22 C shows and uses adhesive battery unit to be adhered to the viewgraph of cross-section of the state of battery case inside;
Figure 23 shows the viewgraph of cross-section that adheres to the battery unit state of battery case inside by adhesive;
Figure 24 shows the oblique view of another example of using secondary cell of the present invention;
Figure 25 shows the oblique view of battery laminate;
Figure 26 shows the oblique view of cell assembly;
Figure 27 shows the oblique view of using secondary cell of the present invention;
Figure 28 shows the oblique view of the cell assembly that stacked width is folded up;
Figure 29 shows the front view of the substrate that is welded with the positive and negative electrode terminal of drawing from the battery laminate;
Figure 30 shows the oblique view of using the used battery charger of secondary cell of the present invention;
Figure 31 shows the front view that is installed in the secondary cell in the above-mentioned battery charger;
Figure 32 shows the oblique view of another example of using the used battery charger of secondary cell of the present invention;
Figure 33 A and Figure 33 B show the viewgraph of cross-section of the above-mentioned battery charger that secondary cell is installed;
Figure 34 shows the oblique view of the above-mentioned battery charger that accommodates keeping arm;
Figure 35 shows the oblique view of another example of using the used battery charger of secondary cell of the present invention;
Figure 36 A and Figure 36 B show the oblique view of the above-mentioned battery charger that secondary cell is installed;
Figure 37 shows the oblique view of correlation technique polymer lithium ion secondary battery.
Embodiment
Below with reference to accompanying drawing, be described in detail using secondary cell of the present invention.Using secondary cell 1 of the present invention, for example is polymer lithium ion secondary battery, and, shown in Figure 1A and Figure 1B, can be used for various electronic equipments such as digital camera 10.Particularly, when secondary cell 1 was contained in the inner set battery compartment 12 in the grip part 11 of the digital camera 10 shown in Figure 1A and Figure 1B, secondary cell 1 was to these digital camera 10 supply driving electric.Battery compartment 12 by corresponding with the shape of secondary cell 1 be that the recess on plane constitutes basically, and when the battery cover 14 on the bottom surface sections 13 that is arranged on digital camera 10 was rotationally opened, battery compartment 12 was towards the outside.In addition, in battery compartment 12, the bottom is formed with the accommodation section electrode, and it contacts with electrode terminal section 37,38 on being arranged on secondary cell 1 (hereinafter being described).And when secondary cell 1 is contained in when making the end face that is provided with electrode terminal section 37,38 become insertion end in the battery compartment 12, secondary cell 1 is connected to the accommodation section electrode, thereby to digital camera 10 supply electric power.Incidentally, battery compartment 12 is provided with and is used for excitation part (energizingmember) (not shown) that secondary cell 1 is discharged from battery compartment 12, and engages the fastener 19 of the secondary cell 1 of battery compartment 12 with opposite being used for of excitation part effect.Fastener 19 will be described later.
Below secondary cell 1 will be described.As shown in Figures 2 and 3, having the battery unit 3 that is encapsulated in inner electrode member inserts from the opening of the metal battery shell 2 that forms with the general planar form, the opening of metal battery shell 2 is clogged by the battery cover 4 that it is provided with portion of terminal, wherein, the positive electrode terminal and the negative electrode terminal of drawing from battery unit 3 are connected to this portion of terminal, have so just formed this secondary cell 1.
Battery case 2 is made by metal shell, and wherein, flat substantially cubical one side is opened wide, and its cross section forms trapezoidal substantially shape simultaneously, makes the edge on each limit in the minor face form circular arc, as shown in Figure 3.Battery case 2 forms flat substantially cube, wherein, only is formed with the opening 5 that is used to insert battery unit 3 on one side, and it is molded as by the metal material of pull and stretch such as iron.By wall thickness being adjusted into about 0.3mm, this battery case 2 forms elongated shape, makes when not considering that distinguish holding of battery unit 3, the THICKNESS CONTROL of itself can be arrived maximum; Simultaneously, by using metal material, that battery case 2 can have is anti-drop, the various impact resistances of vibrations etc., or has the mechanical strength of opposing sharp sword etc., thereby can prevent to be out of shape, the generation of situation such as perforation.Opening 5 is insertion ends, inserts battery unit 3 from opening 5, and after inserting battery unit 3, clogs opening 5 by battery cover 4.For this reason, be installed with a plurality of conjugate foramens 6 on the periphery of opening 5, it engages with outstanding projection 47 on the battery cover 4.In conjugate foramen 6, when battery cover 4 was inserted in the opening 5, copulational protuberance 47 outstanding on the battery cover 4 was clamp-oned in the opening 5, became curved simultaneously, engaged with conjugate foramen 6 then.Like this, battery cover 4 just is assembled on the battery case 2.
When shown in Fig. 4 A and Fig. 4 B, the shape of battery compartment 12 (secondary cell 1 inserts wherein with battery case 2), its cross section forms trapezoidal substantially shape, when making the edge on each limit in the minor face form circular arc, define the inserting surface of the secondary cell 1 in the battery compartment 12 that inserts digital camera 10, thereby can prevent wrong insertion.That is, shown in Fig. 4 A, when the inserting surface of secondary cell 1 was correct, the side of the short brink of battery compartment 12 was consistent with the side interarea shape of the short brink of secondary cell 1, thereby secondary cell 1 can insert smoothly.On the other hand, shown in Fig. 4 B, when the inserting surface of secondary cell 1 was anti-inserted, the square rim in the side of secondary cell 1 long side was subjected to the interference of the radiused edges in the side of battery compartment 12 short brinks, thereby had stoped the insertion of secondary cell 1.Like this, when the inserting surface front and back are anti-inserted, can prevent that not only secondary cell 1 is inserted in the battery compartment 12, and the user can be easy to confirm the correctness of secondary cell 1 inserting surface.
Incidentally, when shown in Fig. 5 A and Fig. 5 B, when being connected in battery installation section (with being separated) that forms on the casting of electronic device or the battery installation section that is installed in battery charger 80 outside the secondary cell 1 with respect to the battery compartment 12 in the bottom surface sections 7 of opening 5, as shown in Figure 6, can be formed with the conjugate foramen 8 that outstanding fastener 9 engages in the battery installation section with electronic equipment or battery charger on the battery case 2.As shown in Figure 7, owing to formed recess 29 (hereinafter being described) on the insertion end face 3b of battery unit 3, when forming with recess 29 corresponding engagement holes 8, it forms can not influence the electrolytical cell device 20 that is provided with positive electrode, negative electrode and is contained in battery unit 3 inside.
Incidentally, the view of Fig. 5 A shows an example, and wherein, conjugate foramen 8 is formed on the whole longitudinally length of bottom surface sections 7; In this case, in battery case 2, first (winding) portion 17 of curling is not arranged on hereinafter described the outside labeling 15, and bottom surface sections 7 outwards is exposed on the whole length.In addition, the view of Fig. 5 B shows an example, and wherein, pair of engaging hole 8,8 is formed on bottom surface sections 7 longitudinally on the both ends; In this case, be used to paste the both ends that are formed with conjugate foramen 8,8 and be arranged on outside labeling 15 with the first volume pars convoluta 17 of exterior domain.
In addition, as shown in Figure 6, when the fastener 9 that is driven in rotation when secondary cell 1 and direction of engagement along battery case 2 engages, secondary cell 1 can beyond link the outside of electronic equipment etc.Like this, the secondary cell 1 in being contained in battery compartment, independently secondary cell 1 can be linked on the electronic equipment outward at an easy rate in addition, therefore, can prolong the service time of electronic equipment.
Conjugate foramen 8 is not limited to the example shown in Fig. 5 A and Fig. 5 B, can also suitably form arbitrary shape.Therefore and coupling recess can be arranged in the battery installation section, can form the copulational protuberance of the corresponding shape of coupling recess on the bottom surface sections 7 that has with battery case 2.
Incidentally, for using secondary cell 1 of the present invention, except being formed with terminal hole 48 that positive electrode terminal portion 37 and negative electrode terminal portion 38 and this positive electrode terminal portion 37 and negative electrode terminal portion 38 form from positive 1c towards the embodiment of outside (hereinafter being described), can also adopt an embodiment, wherein, not only positive electrode terminal portion 37 is formed on the substrate 35, and is formed on conjugate foramen 8 on the bottom surface sections of metal battery shell 2 also as negative electrode or grounding electrode.In this case, shown in Fig. 8 A and Fig. 8 B, the outer casing bottom electrode 57 that becomes negative electrode or grounding electrode is arranged on the position of the conjugate foramen 8 on the bottom surface sections 7 that is used to form battery case 2, and passes through conjugate foramen 8 towards the outside.On this shell bottom electrode 57, be connected to the negative electricity polar curve of substrate 35 or earth connection is besieged and connect.In addition, with fastener 9 that conjugate foramen 8 engages in, be connected to the electrode part 9a on the grounded parts of electrode or electronic equipment side, when engaging, form and be connected to outer casing bottom electrode 57 with the conjugate foramen 8 of secondary cell 1.
In addition, in battery case 2, after connecting battery cover 4, insert battery unit 3, and clog opening 5, paste the outside labeling 15 of insulation again by battery cover 4.Outside labeling 15 becomes the decoration labeling of secondary cell 1, can also be designed to realize simultaneously the insulation of metal battery shell 2.As shown in Figure 3, outside labeling is provided with: interarea portion 16, the outer peripheral edges of the battery case 2 of be used for curling opening 5 and bottom surface sections 7 tops; First volume pars convoluta 17, the zone beyond two ends of bottom surface sections 7 on vertically that are used for curling; And second curled portion 18, the zone beyond the terminal hole 48 that forms on the top cover 36 of the battery cover 4 that is used for curling.
Externally in the labeling 15, because battery case 2 forms flat shape, be easy to carry out stickup work, and compare with the lip-deep situation that it is directly sticked on the battery unit 3 that is configured to packaged battery element 20, outside labeling 15 is not easily separated more.Be crimped onto the length that is shorter in length than bottom surface sections 7 that the first volume pars convoluta 17 on the bottom surface sections 7 of battery case 2 forms, and stick on the bottom surface sections 7, thus bottom surface sections 7 vertically on two end 7a, 7b just be exposed to the outside.In battery case 2, the end of bottom surface sections 7 forms the junction surface that the fastener 19 that is provided with on the battery compartment 12 with digital camera 10 engages.That is, shown in Fig. 9 A and Fig. 9 B, secondary cell 1 forms engaging zones, and the hook-shaped fastener 19 that is used for battery case 2 is remained on the battery compartment 12 of digital camera 10 engages with this engaging zones.Therefore, in the process that secondary cell 1 is installed, fastener 19 is engaged.Like this, always engage with battery compartment 12 along the direction opposite by the excitation part with actuating force to the secondary cell 1 of the external drive of battery compartment 12.In addition, when fastener 19 left the bottom surface sections 7 of fastener 19, secondary cell 1 discharged from battery compartment 12.
Here, if the first volume pars convoluta 17 of outside labeling 15 pastes on the bottom surface sections 7 fully, each secondary cell 1 inserts battery compartment 12 and when pulling down at every turn from battery compartment 12, fastener 19 first volume pars convoluta 17 that all can rub, therefore, outside labeling 15 is rubbed gradually and is separated.In this case, because outside labeling 15 is crimped onto on the zone in addition, junction surface that engages with fastener 19, even when secondary cell 1 is inserted in the battery compartment 12 repeatedly and pull down from battery compartment 12, secondary cell 1 can not be engaged part 19 frictions yet.
In addition, in secondary cell 1, the zone of the stickup first volume pars convoluta 17 of bottom surface sections 7 is corresponding to the zone of the electrode terminal section 37,38 that forms battery cover 4.Therefore, even when secondary cell 1 is installed in battery compartment 12 or the battery charger 80 with the direction opposite with direction of insertion, the outside labeling 15 of insulation that sticks on the bottom surface sections 7 of battery case 2 also can contact with the set accommodation section electrode on battery compartment 12 bottom surface sections corresponding to electrode terminal section 37,38 or the electrode terminal of battery charger 80, therefore, can avoid causing risk of short-circuits owing to directly contacting with metal battery shell 2.
In addition, shown in Fig. 9 C, in case second curled portion 18 is crimped onto on terminal hole 48 zone in addition that forms on the top cover 36 of battery cover 4, second curled portion 18 of outside labeling 15 can be strengthened the assembling intensity between battery cover 4 and the battery case 2.When second curled portion 18 has been strengthened assembling intensity between battery cover 4 and the battery case 2, as shown in figure 10, depth of engagement on the periphery by the copulational protuberance 47 that is provided with on the top cover 36 that makes battery cover 4 and the opening 5 of battery case 2 between that be provided with and the conjugate foramen 6 that copulational protuberance 47 engages becomes (as mentioned below) greatly, and make the top copulational protuberance 47 of battery case 2 outstanding from conjugate foramen 6, just can strengthen the assembling intensity between battery case 2 and the battery cover 4.Therefore, the assembling intensity that can obtain to expect, and can not influence the planarization or the outward appearance of secondary cell 1.
Incidentally, will describe on it in interarea portion of long side face that information labeling 49 that secondary cell 1 various information are arranged sticks on battery case 2.
Below description is contained in battery unit 3 in the battery case 2.As Fig. 3 and shown in Figure 11, in battery unit 3, banded positive electrode and banded negative electrode pile up by polyelectrolyte floor and/or spacer; The cell device 20 of Juan Quing is encapsulated in the packaging part 23 in the vertical; Positive electrode terminal 21 and negative electrode terminal 22 are outwards drawn from positive electrode and negative electrode respectively.
In positive electrode, the positive electrode active substance layer is formed on the banded positive electrode current-collector, and polyelectrolyte floor further is formed on the positive electrode active substance layer.In addition, in negative electrode, the negative electrode active material layer is formed on the banded negative electrode current-collector, and polyelectrolyte floor further is formed on the negative electrode active material layer.Positive electrode terminal 21 and negative electrode terminal 22 are welded on respectively on positive electrode current-collector and the negative electrode current-collector.And positive electrode terminal 21 is made by aluminium (Al), and negative electrode terminal 22 is made by nickel (Ni).These positive electrode terminal 21 and negative electrode terminal 22 are connected to respectively on the electrode film 31 and negative electrode plate 32 that is fixed on the battery cover 4, as mentioned below, and be connected with negative electrode terminal plate 34 with positive electricity end daughter board 33 on being arranged on battery cover 4 similarly by electrode film 31 and negative electrode plate 32 respectively.
According to the kind of target battery, can utilize metal oxide, metal sulfide or specific polymer to construct positive electrode as positive electrode active substance.For example, when the structure lithium ion battery, can use and contain key component Li xMO 2(wherein, M represents one or more transition metal; And x changes according to the difference of cell charging state, normally 0.05-1.10) lithium composite xoide, as positive electrode active substance.As the transition metal M of structure lithium composite xoide, Co, Ni, Mn etc. are preferred.The particular instance of this lithium composite xoide comprises LiCoO 2, LiNiO 2, LiNi yCo 1-yO 2(wherein 0＜y＜1) and LiMn 2O 4This lithium composite xoide can produce high voltage and become the positive electrode active substance of energy density excellence.In addition, such as TiS 2, MoS 2, NbSe 2, and V 2O 5No lithium metal sulfide or oxide also can be used as positive electrode active substance.Also can use the combination of multiple these positive electrode active substances.And, using this type of positive electrode active substance to form in the process of positive electrode, can add known conductive agent, adhesive or analog.
The material that can mix (doping) or deviate from (dedoping) lithium can be used as negative electrode material.For example, can use cheap graphitized carbon as the material on basis or with the material with carbon element of graphite as basic material.More particularly, operable material with carbon element such as thermally decomposed carbon, coke (for example, pitch coke, needle coke and petroleum coke), graphite, vitreous carbon, the compound fired body of organic polymer (by under suitable temperature, firing the material that carbonizations such as phenolic resins, furane resins form), carbon fibre and activated carbon.In addition, the polymer such as polyacetylene and polypyrrole and such as SnO 2And so on oxide can be as mixing or deviate from the material of lithium.Forming in the process of negative electrode, can add known adhesive or analog by this class material.
Be blended in the polymer by blended polymer materials, electrolytic solution and electrolytic salt and with gel electrolyte, prepare polymer dielectric.Polymeric material has some characteristics, makes that it can be compatible with electrolytic solution.The example comprises that silica gel, acrylate glue, acrylonitrile glue, polyphosphazene are polymer-modified, polyethylene oxide and polypropylene oxide and composition polymer thereof, cross-linked polymer or polymer-modified; And fluorine-based polymer, such as polyethylene (ethenylidene fluorine), polyethylene (ethenylidene fluoro-carbon monoxide-tetrafluoride third is rare) and polyethylene (ethenylidene fluoro-carbon monoxide-three fluoridize third rare) etc. and their mixture.
The electrolytic solution composition comprises aprotic solvent, and it can disperse above-mentioned polymeric material wherein, for example, and ethylene carbonate (EC), propylene carbonate (PC) and butylene carbonate (BC).Can use the material compatible as electrolytic salt, also can use cation and anionic composition with solvent.Operable cationic example comprises alkali metal and alkaline-earth metal.Operable anionic example comprises Cl -, Br -, I -, SCN -, ClO 4 -, BF 4 -, PF 6 -, and CF 3SO 3 -Particularly, phosphorus hexafluoride acid lithium or tetrafluoride lithium phosphate can be used as and concentrate the electrolytic salt use, thereby can be dissolved in the electrolytic solution.
As shown in figure 11, form the packaging part 23 that wherein accommodates cell device 20 by cutting cell assembly (aggregate) 27, cell assembly 27 have be basically rectangle hold sheet 24 and diaphragm seal 26, holding on the sheet 24, be provided with a plurality of recesses 25 that hold that are used for holding therein cell device 20 in advance, diaphragm seal 26 is welded on and wherein accommodates the holding on the sheet 24 of cell device 20, and diaphragm seal 26 can hold recess 25 to each that is used for each cell device 20 and seal.
Hold sheet 24 and form elongate shape, thereby, by stacked width 28 a plurality of recesses 25 that hold can be set with preset width.According to the shape of cell device 20, holding that recess 25 forms is the shape of rectangle basically.And the orientation of holding recess 25 is not limited in short side direction shown in Figure 11, holds recess 25 and also can be arranged on long side direction or be arranged on vertically and on the diagonal.To hold the stacked width 28 that recess 25 separates are the composition surfaces that are used to seal the diaphragm seal 26 that holds recess 25 with corresponding.And, shown in the arrow A among Figure 11, when cell device 20 is contained in each when holding in the recess 25, diaphragm seal 26 hot welds to stacked width 28, thereby formed cell assembly 27 with the cell device 20 that is integrated in wherein.
Incidentally, at this moment, positive electrode terminal that extends out from positive electrode and negative electrode and negative electrode terminal are sentenced equidirectional from the junction surface that engages with diaphragm seal 26 and are drawn.In addition, at this moment, when utilizing the welding of vacuum pump (not shown), vacuumize.Because this suction, cell device 20 is sealed in to be coated with and holds the holding in the recess 25 of sheet 24 and diaphragm seal 26.And, the inside that holds recess 25 by suction, the packaging part 23 that is used for holding therein cell device 20 is drawn and is pushed, and then to have formed its cross section be trapezoidal shape substantially, make the edge on each limit of minor face form circular arc, wherein, according to the shape of cell device 20, second side as the bottom surface side that holds recess 25 is less, and bigger as second side of open side.
In addition, in battery unit 3, at cell device 20 and hold between the sheet 24 gap is set, set-up mode is not for to be pressed onto cell device 20 on the side that holds recess 25.And, when holding sheet 24 and diaphragm seal 26 when being drawn and push when sealed, and be formed with recess 25 (see figure 7)s on the face of battery unit 3 opposite sides of drawing positive electrode terminal 21 and negative electrode terminal 22.And to holding after 26 sealings of sheet 24 and diaphragm seal, in each battery unit 3, the interarea of diaphragm seal 26 1 sides forms flat pattern by extruding.After this, cell assembly 27 is cut and will has each packaging part 23 separation of the cell device 20 that is sealed in wherein along stacked width 28, thereby has formed battery unit 3.
Incidentally, except forming battery unit 3 by formation cell assembly 27 and along stacked width 28 cutting cell assemblies 27, cell device 20 can also be contained in the sheet that holds of the well cutting in advance that is used for each independent battery unit, engage and form battery unit 3 with the diaphragm seal that similar cutting obtains of passing through that is used for the independent battery unit again.
Constitute packaging part 23 hold in sheet 24 and the diaphragm seal 26 each have stacked structure, wherein, polypropylene (PP) layer 52, aluminium (Al) layer 53 and nylon layer 54 pile up with the order that begins internally, as shown in figure 12.Here, aluminium lamination 53 is used to prevent moisture intrusion packaging part 23 and prevents the purpose that cell device 20 expands.In addition, polypropylene layer 52 not only can prevent the polymer dielectric sex change, can also become the composition surface that holds between sheet 24 and the diaphragm seal 26.That is, toward each other and under about 170 ℃ it is carried out heating and melting, realize holding engaging between sheet 24 and the diaphragm seal 26 by making polypropylene layer 52.
Incidentally, the structure of packaging part 23 is not limited in this, can also adopt laminated film with various materials, stacked structure etc.In addition, joint method also is not limited only to heating and melting.The example of the constituent material of packaging part 23 comprises aluminium, PETG (PET), non axial oriented polypropylene (CPP), sour modified polypropene, ionomer (ionomer) and ON.
Battery cover 4, have and be connected to the positive electrode terminal 21 of drawing from the same side of battery unit 3 and the portion of terminal of negative electrode terminal 22, and clog the opening 5 of battery case 2, be configured to have: keeper 30 is used to insert and keep being connected to respectively the electrode film 31 and the negative electrode plate 32 of positive electrode terminal 21 and negative electrode terminal 22; Substrate 35 is provided with the positive electricity end daughter board 33 and the negative electrode terminal plate 34 that are connected to electrode film 31 and negative electrode plate 32 respectively; And top cover 36, it is with keeper 30 chucking substrates 35, and engages with the opening 5 of battery case 2, and this battery cover 4 is made by integral body assembling keeper 30, substrate 35 and top cover 36, and as shown in Figure 3.
Keeper 30 is that to form be the parts of trapezoidal writing board shape basically, makes that the edge on each limit forms circular arc in the minor face, and this is by making for the shape identical with the opening 5 of battery case 2 synthetic resin is molded and shaped.In keeper 30, be respectively formed near the side of short brink by its a pair of patchhole 41,42 that inserts electrode film 31 and negative electrode plate 32, and by electrode film 31 and negative electrode plate 32 are inserted respectively and remain in the patchhole 41,42, can be designed to locate electrode film 31 and negative electrode plate 32, and prevent secondary cell 1 fall or by the offsets that cause such as vibrations.Therefore, electrode film 31 and negative electrode plate 32 can prevent, owing to falling or causing the situation of welding by the offset that vibrations etc. cause between positive electrode terminal 21 and negative electrode terminal 22.
The purpose that electrode film 31 and negative electrode plate 32 are set is, to be connected to positive electricity end daughter board 33 set on the substrate 35 and negative electrode terminal plate 34 from positive electrode terminal 21 and the negative electrode terminal 22 that battery unit 3 is drawn, wherein, substrate 35 becomes the electrode terminal of secondary cell 1, and when electrode film 31 and negative electrode plate 32 inserts and is supported in the keeper 30, one end 31a, 32a extend to battery unit 3 one sides, and other end 31b, 32b extend and remain on substrate 35 1 sides.In these electrode films 31 and negative electrode plate 32, by using nickel (Ni), one end 31a, 32a are separately positioned on positive electrode terminal 21 and the negative electrode terminal 22, and other end 31b, 32b are separately positioned on the positive electricity end daughter board 33 and negative electrode terminal plate 34 set on the substrate 35, and then 4 are welded together jointly by spot welding.Its reason is that because positive electrode terminal 21 is to form with aluminium (Al), if positive electrode terminal 21 directly is welded on the positive electricity end daughter board 33, aluminium will melt so, thereby can't finish connection.Therefore, by adjusting electrode film 31 and negative electrode plate 32 and welding, positive electrode terminal 21 is connected to positive electricity end daughter board 33, and negative electrode terminal 22 is connected to negative electrode terminal plate 34 from upside.
And, shown in Figure 13 A and Figure 13 B, on electrode film 31 and negative electrode plate 32 corresponding end 31a, 32a, being formed with folding part 39,40, its most advanced and sophisticated edge is folding towards the one side of the contact-making surface opposite side that contacts with negative electrode terminal 22 with electrode terminal 21.In folding part 39,40, as shown in figure 14, electrode film 31 and negative electrode plate 32 all have the thickness of 0.1mm, and its tip is folded into the height of about 0.3mm.Like this, by folding most advanced and sophisticated side, electrode film 31 and negative electrode plate 32 all are made into vertically to place with circular arc, and engage with positive electrode terminal 21 and negative electrode terminal 22 respectively, and be as mentioned below.After this, when fold joint portion 50, even when the tip contacts with positive electrode terminal 21 or negative electrode terminal 22, also can prevent the situation that positive electrode terminal 21 or negative electrode terminal 22 are damaged or cut.
Incidentally, the ground wire 43 that will be used to discharge the lotus of charging on the battery case 2 is connected to negative electrode plate 32.When ground wire 43 was supported by keeper 30, the one end can be connected to negative electrode plate 32, and the other end can contact with the inner surface of battery case 2.Like this, even when being filled with electric charge on the metal battery shell 2, electric charge also can be discharged on the negative electrode plate 32 by ground wire 43, thereby, can not since on the secondary cell 2 lotus of charging cause secondary cell 1 inside micro computer or the faulty operation of the electronic equipment of secondary cell 1 wherein be installed.Incidentally, ground wire can be connected to substrate 35, thereby by substrate 35 electric charge is discharged on the negative electrode plate 32.
In addition, on the above and below of keeper 30 30a, 30b, be formed with intermittently in the vertical insert and with top cover 36 on a plurality of projections 44 that are connected of engaging of set connecting hole 46.When connection projection 44 engaged with connecting hole 46, keeper 30 was connected with top cover 36, thus chucking substrate 35.
Substrate 35 is rigid substrates, be formed with circuit pattern on it, be used for electric current being fed to electronic equipment from battery unit 3 by terminal board 33,34, and positive electricity end daughter board 33 and negative electrode terminal plate 34 are installed on the substrate 35, this positive electricity end daughter board 33 and negative electrode terminal plate 34 are welded on respectively on other end 31b, the 32b of electrode film 31 and negative electrode plate 32.Positive electricity end daughter board 33 and negative electrode terminal plate 34 are connected to formed positive electrode terminal portion 37 and negative electrode terminal portion 38 on the one side with the installed surface opposite side respectively.And on substrate 35, positive electrode terminal portion 37 and negative electrode terminal portion 38 and contacts with the set electrode terminal in digital camera 10 or battery charger 80 sides by terminal hole 48 set on the top cover 36 outwardly.
According to the function of secondary cell 1, positive electrode terminal portion 37 and negative electrode terminal portion 38 form with mutually different arrangement mode.Its reason is as follows: the secondary cell 1 that is being used for various electronic equipments, there is a kind of situation to be, though it is identical for battery case 2 or battery cover 4 its external shape, but by making battery capacity according to the difference of institute's use electronic equipment and difference, or, can provide incompatible polytype secondary cell 1 by making the compliant electronic device difference.In addition, also have a kind of situation to be, provide mutually different a plurality of secondary cells 1 on the function, combination as two types, wherein one type is, is provided with remaining power life-span display part and remaining power life-span the Show Button such as LED display part or liquid crystal display part, thereby introduces remaining power life-span Presentation Function, another kind of type is not possess this remaining power life-span Presentation Function; And another combination of two types, wherein one type is, can realize recharging fast, another kind of type is can not realize recharging fast.
But, all be identical owing to have the external shape of all types of secondary cells 1 of any function, just secondary cell 1 might be installed on the incompatible electronic equipment.So, different by making with the arrangement of negative electrode terminal portion 38 for the positive electrode terminal portion 37 of every kind of function, and the arrangement difference of the electrode terminal by making compliant electronic device similarly, just can avoid because the secondary cell mistake is installed any trouble that causes.
Particularly, positive electrode terminal portion 37 and the negative electrode terminal portion 38 for every kind of function is arranged on the point-symmetric substantially position.For example, at the secondary cell 1A shown in Figure 15 A with in the secondary cell 1B shown in Figure 15 B with the high battery capacity of 830mAh with 760mAh battery capacity, positive electrode terminal portion 37 and negative electrode terminal portion 38 are arranged on the point-symmetric substantially position, as having rotated 180 degree.Incidentally, also can be arranged on the symmetrical position for the positive electrode terminal portion 37 and the negative electrode terminal portion 38 of every kind of function, shown in Figure 16 A and Figure 16 B.And, can suitably select point-symmetric substantially spread geometry.
Like this, arrangement by making positive electrode terminal portion 37 and negative electrode terminal portion 38 is according to the function of secondary cell 1 and different, and make arrangement difference corresponding to the electronic equipment electrode terminal of this function, when even secondary cell 1 is installed on the incompatible electronic equipment, because the electrode terminal of electronic equipment side does not contact with the electrode terminal of secondary cell 1 side, thereby can prevent because the mistake of incompatible secondary cell 1 is installed any trouble that causes.
On substrate 35, by carrying out etching and form circuit pattern and terminal pad (land), and positive electricity end daughter board 33 and negative electrode terminal plate 34 are installed on the terminal pad by reflow soldering with sticking on Copper Foil on the insulated substrate etc.As indicated above, positive electricity end daughter board 33 and negative electrode terminal plate 34 are respectively with positive electrode terminal 21 and negative electrode terminal 22, and soft soldering is on electrode film 31 and negative electrode plate 32 respectively.And positive electrode terminal portion 37 and negative electrode terminal portion 38 are formed on the terminal pad of pre-position formation by gold-plated (gilding) or similar approach.
Incidentally, if desired, substrate 35 can be provided with the temperature-sensitive element such as PTC (positive temperature coefficient), is used to detect the temperature of secondary cell 1, to realize charging control or security control.By temperature-sensitive element is set, when temperature raise, secondary cell 1 can cut off and control input/output circuitry.
Top cover 36 with keeper 30 chucking substrates 35 is trapezoidal substantially flat tabular parts, thereby the edge on each limit can form circular arc in the minor face, and this is by making for identical with the opening 5 of battery case 2 substantially shape synthetic resin is molded and shaped.In top cover 36, on the short side 36a and long side face below on the 36b, be formed with a plurality of connecting holes 46 intermittently corresponding to connecting projection 44, wherein, outstanding a plurality of connection projections 44 are inserted also and are bonded in the connecting hole 46 on the keeper 30.In addition, in top cover 36, on 36a and the following 36b, be formed with a plurality of copulational protuberances 47 in the above, it engages with the conjugate foramen 6 that forms on the periphery of the opening 5 of battery case 2.And when top cover 36 inserts the battery cases 2 from opening 5, when 36a and following 36b slight bending, copulational protuberance 47 engaged and is assembled in the battery case 2 with conjugate foramen 6 above inserted mode made.
In addition, on top cover 36, be installed with terminal hole 48 on the positive 36c, be formed at positive electrode terminal portion 37 on the substrate 35 and negative electrode terminal portion 38 outwardly from this terminal hole 48, and, positive electrode terminal portion 37 and negative electrode terminal portion 38 by terminal hole 48 with contact such as the electronic equipment of digital camera 10 or the electrode terminal of battery charger 80 sides.Incidentally, for instance, terminal hole 48 is arranged on three positions according to the portion of terminal that forms on the substrate 35, and can be arranged to be positive electrode terminal and negative electrode terminal work, and be the terminal work such as the category information in remaining power life-span respectively.Incidentally, according to the portion of terminal that is provided with on the substrate 35, the quantity of terminal hole 48 can suitably increase or reduce.
Positive electrode terminal 21 and negative electrode terminal 22 when battery unit 3, by electrode film 31 and the negative electrode plate 32 that keeps on the keeper 30, be connected to positive electricity end daughter board 33 and negative electrode terminal plate 34 on the substrate 35 respectively, and the connection projection 44 of keeper 30 is when being inserted in the connecting hole 46, top cover 36 is connected with keeper 30, simultaneously substrate 35 is clipped in therebetween, thereby forms battery cover 4.After this, when the conjugate foramen 6 that forms on the periphery of the copulational protuberance 47 of top cover 36 and the opening 5 of battery case 2 engaged, battery cover 4 was assembled on the battery case 2, thereby forms secondary cell 1.
Incidentally, on top cover 36, shown in Figure 17 A to Figure 17 C, when be connected to outside the top cover 36 with casting of electronic device that battery compartment 12 on the positive 36c separates on the formed battery installation section time, or when top cover 36 is installed on the battery installation section of battery charger 80, can form junction surface 79, it engages with outstanding copulational protuberance 78 on the battery installation section of electronic equipment or battery charger.In secondary cell 1, as shown in Figure 6, with when copulational protuberance 78 engages, battery case 2 is installed at junction surface 79.When molded formation top cover 36, can form junction surface 79 at an easy rate.Incidentally, the two ends of the positive 36c that shows at top cover 36 of Figure 17 A are formed with the example at junction surface 79 with the recess form; Figure 17 B shows the example at the two ends at the junction surface 79 of recess form fluting; Be arranged on the battery installation section and Figure 17 C shows coupling recess, be formed on example on the top cover 36 of secondary cell 1 and have with the protrusion engagement portion 79 of the corresponding shape of coupling recess.
Incidentally, in this manual, for secondary cell 1, the interarea in battery case 2 short sides is meant the top 1a of secondary cell 1; Interarea in the battery case 2 long side faces is meant the following 1b of secondary cell 1; The positive 36c of top cover 36 is meant the positive 1c of secondary cell 1; And the bottom surface sections 7 of battery case 2 is meant the back 1d of secondary cell 1.
Below, with reference to Figure 18 A to Figure 18 L, the manufacture process of secondary cell 1 is described.At first, shown in Figure 18 A, battery unit 3 and substrate 35 are arranged in the anchor clamps, omit its details.Under the situation about having, at this moment, the stacked width 28 of battery unit 3 along cell assembly 27 cut, and along the side of battery unit 3 stacked width 28 is folded into for its cross section and is essentially trapezoidal shape, thereby be easy to processing; As mentioned below, in the process that is contained in battery case 2, when folding stacked width 28 was arranged between battery case 2 sides and the battery unit 3, it played the effect of buffer component.In addition, on substrate 35, be formed with predetermined circuit patterns and positive electrode terminal portion 37 and negative electrode terminal portion 38, and positive electrode terminal plate 33 and negative electrode terminal plate 34 are carried out reflow soldering.
Incidentally, about the formation of battery unit 3, except forming cell assembly 27 and cutting, diaphragm seal can also be connected with the sheet that holds that wherein accommodates corresponding to the cell device 20 of each independent battery unit along stacked width 28.
Battery unit 3 is provided with as follows: that draws positive electrode terminal portion 21 and negative electrode terminal portion 22 holds composition surface between sheet 24 and the diaphragm seal 26 towards the top, and the bottom that holds recess 25 is towards the below.That is, be that the battery unit 3 of tapered in form is provided with as follows basically for its cross section: the short side is towards the below, and the long side of drawing positive electrode terminal portion 21 and negative electrode terminal portion 22 faces upward.And battery unit 3 is provided with as follows: the lead surface 3a that draws positive electrode terminal portion 21 and negative electrode terminal portion 22 is towards substrate 35 1 sides.Substrate 35 is with following method setting: the installed surface that positive electricity end daughter board 33 and negative electrode terminal plate 34 are installed on it is towards the top, and is the side of the short side of trapezoidal shape towards the lead surface 3a of battery unit 3 basically.
Then, shown in Figure 18 B, in keeper 30, electrode film 31 and negative electrode plate 32 insert by patchhole 41,42 and keep.In addition, at this moment, ground wire 43 also is installed on the keeper 30.Then, shown in Figure 18 C, by this keeper 30 is installed in the anchor clamps, keeper 30 is set between battery unit 3 and the substrate 35.On keeper 30, the short side that is essentially trapezoidal shape that wherein maintains electrode film 31 and negative electrode plate 32 is towards the below, and locatees with respect to substrate 35 minor faces.In addition, on keeper 30, an end 31a of electrode film 31 is placed on battery unit 3 positive electrode terminal 21 above, and with an end 32a of negative electrode plate 32 be placed on negative electrode terminal 22 above.And, the other end 31b of electrode film 31 is placed on substrate 35 positive electricity end daughter board 33 above, and with the other end 32b of negative electrode plate 32 be placed on negative electrode terminal plate 34 above.Like this, the positive electricity end daughter board 33 of the electrode film 31 of the positive electrode terminal 21 of battery unit 3 and negative electrode terminal 22, keeper 30 and negative electrode plate 32 and substrate 35 and negative electrode terminal plate 34 all are positioned at (referring to Figure 19) on the substantially the same plane.
Then, one end 31a of electrode film 31 and an end 32a of other end 31b and negative electrode plate 32 and four positions of other end 32b are welded from upside respectively, thus respectively the positive electrode terminal 21 of battery unit 3 is connected to electrode film 31 an end 31a, with negative electrode terminal 22 be connected to negative electrode plate 32 an end 32a, the positive electricity end daughter board 33 of substrate 35 is connected to the other end 31b of electrode film 31 and the other end 32b that negative electrode terminal plate 34 is connected to negative electrode plate 32.At this moment, though with aluminium (Al) as positive electrode terminal 21 weld because positive electrode terminal 21 is upsides from the electrode film 31 made by nickel, so can guarantee being bonded with each other of two parts, and can not produce heat fusing.
Then, shown in Figure 18 D, substrate 35 is holded up, thereby place keeper 30 thereon.At this moment, on corresponding other end 31b, the 32b of electrode film 31 that keeps by keeper 30 and negative electrode plate 32, will from the patchhole 41,42 of substrate 35 1 sides, fold the bottom of projection along vertical direction.
Then, shown in Figure 18 E, paste insulating paper 51, thereby can cover the junction surface 50 between the end 32a of end 31a of positive electrode terminal portion 21 and negative electrode terminal portion 22 and electrode film 31 and negative electrode plate 32.Insulating paper 51 not only can be strengthened the junction surface 50 between positive and negative electrode terminal 21,22 and the positive, negative electrode plate 31,32, can also prevent owing to contacting generation that causes short circuit and the generation that causes short circuit between positive electrode and the negative electrode owing to the distortion of electrode film 31 and negative electrode plate 32 between metal battery shell 2 and the junction surface 50.On insulating paper 51, the one side side is formed with adhesion layer, and by folding insulating paper 51 when clamping junction surface 50, shown in Figure 18 F, adhesion layer is pasted together each other, thereby finishes stickup work.
Then, shown in Figure 18 G, keeper 30 is connected with top cover 36, thereby forms battery cover 4.After this, shown in Figure 18 H and Figure 13 A, 13B, junction surface 50 between one an end 31a of positive electrode terminal portion 21 and negative electrode terminal portion 22 and electrode film 31 and the end 32a of negative electrode plate 32 is folded into the shape of S shape basically, thereby the lead surface 3a of battery unit 3 and battery cover 4 are toward each other.Like this, be contained in the battery case 2 by junction surface 50 case of bending, even make because fall, vibrations etc. and between battery unit 3 and battery cover 4, act on when impact is arranged, shock loading also can by hold and the junction surface 50 that is folded into S shape shape basically absorbs, thereby can prevent to take place between positive electrode terminal portion 21 and negative electrode terminal portion 22 and electrode film 31 and the negative electrode plate 32 to separate or fracture (referring to Figure 13 A and Figure 13 B).
Then, shown in Figure 18 I, in battery unit 3, will have meagre thickness and its both sides elastic component 55 of being formed with adhesion layer stick on the insertion end face 3b that is inserted in the battery case 2.This elastic component 55 not only makes battery unit 3 be fixed on battery case 2 inside, thereby avoids unstable, and all right absorption is in the impact of battery unit 3.The example of elastic component 55 comprises that the use polyurethane foam adheres to two coated tapes (pressure sensitive adhesive double coated tape) as the pressure sensitive of base material.The insertion end face 3b of battery unit 3 does not form flat shape, but the end face that its shape is easy to disperse.But this dispersion can be absorbed by elastic component 55, thereby can guarantee that battery unit 3 adheres to battery case 2 inside.In addition, elastic component 55 can absorb because fall, vibrations etc. cause acts on impact on the battery unit 3, perhaps can reduce the load to junction surface 50 that the thermal expansion owing to battery unit 3 produces.Therefore, elastic component 55 can prevent to separate between positive electrode terminal 21 and negative electrode terminal 22 and electrode film 31 and the negative electrode plate 32 with above-mentioned insulating paper 51.
Shape according to the insertion end face 3b of battery unit 3, form the shape of substantial rectangular when elastic component 55, and when the side of battery unit 3 is arranged on two ends in the vertical, pastes and be used for the stacked width 28 of battery unit 3 and the dielectric film 56 of battery case 2 insulation.That is, constitute battery unit 3 packaging part 23 hold sheet 24 and diaphragm seal 26 is sheet, wherein paste polypropylene (PP) layer 52, aluminium (Al) layer 53 and nylon layer 54 with the above-mentioned order that begins from the inboard.When stacked width 28 cuts, the equivalent layer that is configured to sheet on this cut surface is exposed to the outside.Therebetween, when aluminium lamination 53 directly contacted with metal battery shell 2, if to battery case 2 chargings, aluminium lamination 53 promptly became negative electrode.When making that for a certain reason polypropylene layer 52 also has the hole, by electrolytic corrosion, aluminium lamination 53 also has the hole.And possible is that when moisture was invaded from the hole of packaging part 23, battery unit 3 can expand.So, dielectric film 56 is set, can be designed to realize the insulation between the cut surface of battery case 2 and packaging part 23, thereby prevents to cause battery unit 3 to expand owing to cell device 20 absorbs moistures by cut surface along battery unit 3.
Dielectric film 56 is vertical films that the side according to battery unit 3 forms, and the one end pastes on each end of elastic component 55.As shown in figure 20, when battery unit 3 is inserted into the battery case 2 from inserting end face 3b, dielectric film 56 is folding by the lateral edge portion of the opening 5 of battery case 2 along the side of battery unit 3, and is arranged between the side of the cut surface of the stacked width of being turned up on battery unit 3 sides 28 and battery case 2.Like this, can prevent to be exposed to contacting between aluminium lamination 53 and the battery case 2 on the cut surface of stacked width 28.
Then, shown in Figure 18 J, battery unit 3 is inserted in the battery case 2, and clogs the opening 5 of battery case 2 by battery cover 4.At this moment, insert battery unit 3 as follows: make for its cross section it is that trapezoidal short side and long side face adapts with the trapezoidal basically battery case 2 of short side and long side face become to(for) its cross section similar shape basically.Like this, can make full use of the inner space of battery case 2, make between battery case 2 and battery unit 3, a predetermined gap to be set.Shown in Figure 21 A to Figure 21 C, when battery unit 3 expanded owing to heat or analogue, this gap became the edge, thereby can avoid causing junction surface 50 overloads or battery case 2 distortion owing to battery unit 3 expands.Situation when incidentally, Figure 21 A two interarea equivalent showing battery unit 3 expand; Situation when two interarea inequalities that Figure 21 B and Figure 21 C all schematically show battery unit 3 expand.
In addition, when the direction of battery unit 3 is opposite, interferes owing to form the edge of circular arc on the edge on each limit in the battery unit 3 long limits and each limit in battery case 2 minor faces, thereby can prevent insertion, and then might avoid the insertion that makes a mistake.
As shown in figure 20, when inserting battery unit 3, along the side of battery unit 3, the side of the opening 5 by battery case 2 is provided with dielectric film 56.In addition, battery unit 3 adheres to the bottom surface sections of battery case 2 by inserting the elastic component of being pasted on the end face 3b 55.After inserting battery unit 3, copulational protuberance 47 outstanding on the top cover 36 is clamp-oned in the opening 5, becomes curved simultaneously, engages with conjugate foramen 6 then.Like this, battery cover 4 just is assembled in the opening 5 of battery case 2.
In addition, when battery cover 4 was assembled on the battery case 2, the junction surface 50 between positive electrode terminal 21 and negative electrode terminal 22 and electrode film 31 and the negative electrode plate 32 formed the form of S shape basically with case of bending between battery unit 3 and keeper 30.
Then, shown in Figure 18 K, outside labeling 15 is pasted the periphery of battery case 2.The stickup of outside labeling 15 makes, the outer peripheral edges of interarea portion 16 curling battery cases 2; The zone that first volume pars convoluta 17 curls beyond two ends of bottom surface sections 7; And the zone beyond the terminal hole 48 that forms on the top cover 36 of second curled portion, 18 curling battery covers 4.At last, shown in Figure 18 L, there is the information labeling 49 of secondary cell 1 various information to paste in the interarea portion of the battery case 2 long side faces that have been pasted with outside labeling 15 on it with describing on it, thereby can finishes the relevant work of secondary cell 1.
According to secondary cell 1,, can be easy to realize assembling by the battery cover 4 of metal battery shell 2 with molded formation is assembled together mutually with said structure.And, form battery case 2 by using metal material to carry out pull and stretch, can realize simultaneously that thin-long and intensity guarantee, thereby the secondary cell that requires such as miniaturization, thin-long and lighting that can satisfy electronic equipment can be provided.In addition, the battery cover of making by synthetic resin by processing metal battery case 2 or molded formation 4, can form the external shape at conjugate foramen 8 or junction surface 79 at an easy rate, this junction surface 79 becomes installation end in the process of the battery installation section that secondary cell is installed to electronic equipment.
And, in secondary cell 1, when battery case 2 and battery cover 4 form when trapezoidal basically for its cross section, wherein, the edge on each limit in the minor face forms circular arc, and that the battery compartment 12 of digital camera 10 1 sides forms is identical shaped, if inserting surface has been put the cart before the horse, the edge of the edge of battery compartment 12 and secondary cell 1 will be interfered mutually so, thereby forbid inserting.Therefore, can guarantee to avoid wrong inserts.
In addition, in battery case 2, can on the bottom surface sections 7 of not pasting outside labeling 57, outer casing bottom electrode 57 be set, thereby utilize this electrode as negative electrode or grounding electrode.And, when the two ends of the bottom surface sections 7 of not pasting outside labeling 15 as with junction surface that the fastener 19 of electronic equipment one side setting engages the time, even be subjected to the repeated friction of fastener 19, the situation also can avoiding outside labeling 15 such as fracture taking place or separating.And, by with the positive electrode terminal portion 37 and the negative electrode terminal portion 38 equal corresponding zones of secondary cell 1, formation pastes the sticking area of the outside labeling 15 on the bottom surface sections 7 of battery case 2, even when on such as the opposite way round of the electronic equipment of digital camera 10 or battery charger 80, secondary cell 1 being installed, because the outside labeling of the insulation of being pasted on the bottom surface sections 7 of secondary cell 1 contacts with digital camera 10 or battery charger 80 1 sides, wherein, this digital camera 10 or battery charger 80 are provided with corresponding to the position of each positive electrode terminal portion 37 and negative electrode terminal portion 38, thereby the direct contact that can avoid taking place owing to bottom surface sections 7 causes short circuit.In addition, form on the zone in addition, zone, can strengthen the assembling intensity between battery case 2 and the battery cover 4 by each positive electrode terminal portion 37 and the negative electrode terminal portion 38 that outside labeling 15 is crimped onto battery cover 4.Therefore, owing to will from conjugate foramen 6, not highlight at the copulational protuberance 47 of formation on battery case 2 upper face sides and the battery cover 4 that battery case 2 engages, so can guarantee to assemble intensity, and can not influence the planarization or the outward appearance of secondary cell 1.
In addition, in secondary cell 1, position by making each the positive electrode terminal portion 37 that is formed on the battery cover 4 and negative electrode terminal portion 38 is according to different (such as the battery capacities) of function and different, and make battery case 2 and battery cover 4 have identical shaped, even when the incompatible secondary cell 1 of type is installed on the incompatible digital camera 10, can not conduct electricity between the electrode terminal yet, thereby avoid bothering.
In addition, in secondary cell 1, when battery case 2 and battery unit 3 form trapezoidal basically shape for its cross section, wherein, the edge line on each limit in the minor face forms circular arc, just can prevent that battery unit 3 is inserted in the battery case 2 mistakenly, can effectively utilize the inner space of battery case 2 simultaneously.Like this, can provide a gap, when battery unit 3 thermal expansions, this gap can become the edge between battery unit 3 and battery case 2 inwalls.Therefore, even when battery unit 3 thermal expansions, can not cause battery case 2 distortion, perhaps, overload can not act on the junction surface 50 between positive electrode terminal 21 and negative electrode terminal 22 and electrode film 31 and the negative electrode plate 32 yet.
In addition, in secondary cell 1, battery cover 4 is arranged to have: keeper 30 is used to be designed to electrode film 31 and negative electrode plate 32 are positioned and fix; Substrate 35 is provided with positive electrode terminal portion 37 and negative electrode terminal portion 38; And top cover 36, be used for keeper 30 chucking substrates 35.Like this, in keeper 30, by being designed to electrode film 31 and negative electrode plate 32 location and keeping them, can realize the welding with positive electrode terminal 21 and negative electrode terminal 22 at an easy rate, or with the welding of positive electricity end daughter board 33 and negative electrode terminal plate 34.And, even when fall owing to secondary cell 1 or vibrations etc. acted on impact, also can avoid between electrode film 31 and negative electrode plate 32, welding portion occurring.
In addition, in secondary cell 1, because battery case 2 is installed on the insertion end face 3b of battery unit 3 by elastic component 55, not only can avoid battery unit 3 instabilities of battery case 2 inside, can also absorb because the falling or impact that vibrations etc. cause of battery case 2, thereby avoid percussion in the junction surface 50.And, by folding stacked width 28, then battery unit 3 is inserted in the battery case 2 along the side, can make folding stacked width 28 play the effect of buffer component between battery unit 3 and the battery case 2.
In addition, in secondary cell 1, by dielectric film 56 is pasted on the elastic component 55, when battery unit 3 is inserted in the battery case 2, dielectric film 56 is provided with along the side of battery unit 3, be guided simultaneously on the side of opening 5 of battery case 2 and be exposed to the aluminium lamination 53 of the packaging part 23 on stacked width 28 cut surfaces, thereby can be designed to inwall insulation with battery case 2 with covering.Therefore,, also can avoid polypropylene layer 52 to occur the phenomenon in hole for some reason even during to metal battery shell 2 charging, otherwise, can cause electrolytic corrosion, the hole appears in packaging part 23, and then moisture invades from this hole, thereby causes the expansion of battery unit 3.
In addition, in secondary cell 1, because insulating paper 51 pastes on the junction surface 50 between positive electrode terminal 21 and negative electrode terminal 22 and electrode film 31 and the negative electrode plate 32, not only can strengthen junction surface 50, can also prevent and cause circuit with contacting of metal battery shell 2.And, be contained in the battery case 2 when bending to basically S shape by junction surface 50, even because secondary cell 1 falls or vibrations etc. cause and act on when impact is arranged between battery unit 3 and battery cover 4, the junction surface 50 that has been folded into S shape form basically and has been received is subjected to bending, thereby absorbed shock loading, and then avoided positive electrode terminal 21 to separate with negative electrode plate 32 with negative electrode terminal 22 and electrode film 31.
Incidentally, as previously mentioned, in using secondary cell 1 of the present invention, battery unit 3 sticks to battery case 2 inside by elastic component 55.But, shown in Figure 22 A to Figure 22 C, can adopt following this structure, wherein, before inserting battery unit 3, coated with adhesive 58 on an interarea of battery case 2 inside, this adhesive 58 be by being inserted into battery unit 3 on the interarea that is distributed in battery case 2 inside in the battery case 2, thereby battery unit 3 is adhered on the battery case 2.By adopting this structure, battery unit 3 can be fixed in the battery case 2, thus can avoid since secondary cell 1 fall or vibrations etc. cause the instability of the battery unit 3 of battery case 2 inside.Therefore, on the junction surface 50 between positive electrode terminal 21 and negative electrode terminal 22 and electrode film 31 and the negative electrode plate 32, can not act on overload, thereby can prevent that positive electrode terminal 21 from separating with negative electrode plate 32 with negative electrode terminal portion 22 and electrode film 31.
In addition, by using adhesive 58 that battery unit 3 is fixed on battery case 2 inboards, can effectively utilize the inner space of battery case 2, also can between the inwall of the interarea of the battery unit on the adhesive face opposite side 3 and the battery case 2 of relative above-mentioned interarea, form predetermined gap.Therefore, as shown in figure 23, even battery unit 3 thermal expansions because the edge of battery unit 3 volumetric expansions can be guaranteed to stop in this gap, act on the situation on the junction surface 50 so can prevent battery case 2 generation distortion or overload.
In addition, in using secondary cell of the present invention, not only can adopt single battery unit 3 is inserted into structure in the battery case 2, can also adopt structure as shown in figure 24, in this structure, being formed with wherein to pile up has the battery of a plurality of battery units 3 laminate (stack) 61, and this battery laminate 61 is inserted in the single battery shell 62.Below will the secondary cell 60 that be configured to accommodate therein battery laminate 61 be described.Incidentally, for above-mentioned secondary cell 1 in components identical, provide identical label, will omit relevant details simultaneously.
In battery laminate 61, a plurality of battery units 3 are stacked as follows, and the lead surface 3a that draws positive electrode terminal 21 and negative electrode terminal 22 is towards equidirectional, if expectation can adhere to corresponding battery unit 3 mutually.In battery laminate 61, positive electrode terminal 21 of from each battery unit 3, drawing and negative electrode terminal 22 respectively with the substrate 65 that constitutes battery cover 64 on positive electricity end daughter board 66 and negative electrode terminal plate 67 weld together.
On battery laminate 61,, battery unit 3 is stacked by above-mentioned cell assembly 27 is folded along stacked width 28.Battery unit 3 can be stacked as shown in figure 24 two-layer, also can be stacked into as shown in figure 25 three layers.When battery unit 3 is stacked into three layers, as shown in figure 26, form cell assembly 27 like this, the promptly feasible overlapping width W that is arranged between the respective battery unit 3 1And W 2Different.In secondary cell 60, the wiring difference between quantity and the respective battery unit 3 of piling up by battery unit 3 can be provided with battery capacity and voltage arbitrarily.
Incidentally, folded by battery unit 3 is cut down independently the windrow of going forward side by side from cell assembly 27, can form battery laminate 61, thereby lead surface 3a is towards equidirectional.
On substrate 65, the positive electrode terminal portion 71 and the negative electrode terminal portion 72 that are formed with positive electricity end daughter board 66 and negative electrode terminal plate 67 and are connected to positive electricity end daughter board 66 and negative electrode terminal plate 67 respectively by circuit pattern, wherein, this positive electricity end daughter board 66 and negative electrode terminal plate 67 weld together with the positive electrode terminal 21 and the negative electrode terminal 22 of drawing from each battery unit 3, and the terminal hole 70 that this positive electrode terminal portion 71 and negative electrode terminal portion 72 pass through to form on the top cover 69 is towards the outside.
In secondary cell 60, the circuit pattern by substrate 65 can be provided with the battery unit 3 that is piled up, and makes them to connect by serial or parallel connection.The sort circuit pattern is by utilizing Copper Foil to carry out etch process, utilizing conductive agent to carry out typography or similar approach forms.And positive electricity end daughter board 66 and negative electrode terminal plate 67 are formed on the terminal pad by reflow soldering.Positive electrode terminal portion 71 and negative electrode terminal portion 72 are formed on by gold-plated or similar approach and are formed on the terminal pad on the precalculated position.Incidentally, similar with above-mentioned secondary cell 1, according to the difference of every kind of function, as the battery capacity of secondary cell 60, positive electrode terminal portion 71 and negative electrode terminal portion 72 also can be arranged on the diverse location.Substrate 65 is held part 68 and top cover 69 is clamped, and constitutes battery cover 64 with keeper 68 and top cover 69.
Keeper 68 is connected with top cover 69 by substrate 65, thereby with top cover 69 chucking substrates 65.Like this, keeper 68 accepts to act on extruding force in positive electrode terminal portion 71 and the negative electrode terminal portion 72 with top cover 69, thereby can avoid transshipping the situation in positive electrode terminal portion 71 and the negative electrode terminal portion 72 of acting on.By with synthetic resin molded and shaped be the shape substantially the same with the opening 63 of battery case 62, prepare keeper 68.And, in keeper 68, in the above on 68a and the following 68b, be formed with intermittently with top cover 69 on a plurality of projections 73 that are connected of engaging of the connecting hole 74 that forms.
Keeping the top cover 69 of substrate 65 together with keeper 68 is parts of being prepared by following mode: be the shape substantially the same with synthetic resin is molded and shaped with the opening 63 of battery case 62, and this top cover 69 can with opening 63 fluid-tight engagement.On top cover 69, in the above on 69a and the following 69b, be formed with a plurality of connecting holes 74 corresponding intermittently with connecting projection 73, wherein, outstanding a plurality of connection projections 73 are inserted also and are bonded in a plurality of connecting holes 74 on the keeper 68.And, on top cover 69, on above and below 69a and 69b, be formed with a plurality of copulational protuberances 77, wherein, the conjugate foramen 76 that forms on the periphery of the opening 63 of battery case 62 engages with it.And when top cover 69 in above and below 69a and 69b slight bending the time, when inserting in the battery case 62 from opening 63, copulational protuberance 77 engages with conjugate foramen 76, and is assembled on the battery case 62.
In addition, on top cover 69, be extruded with terminal hole 70, can be thereby be formed at positive electrode terminal portion 71 on the substrate 65 and negative electrode terminal portion 72 towards the outside, and positive electrode terminal portion 71 and negative electrode terminal portion 72 by terminal hole 70 with contact such as the electronic equipment of digital camera 10 or the electrode terminal of battery charger 80 sides.
On top cover 69, after the positive electricity end daughter board 66 and negative electrode terminal plate 67 that the positive electrode terminal 21 and the negative electrode terminal 22 of battery unit 3 is connected to substrate 65 respectively, by the connection projection 73 of keeper 68 is inserted in the connecting hole 74, top cover 69 and keeper 68 are in chucking substrate 65, connect, thereby formed battery cover 64.After this, when the conjugate foramen 76 that forms on opening 63 peripheries of the copulational protuberance 77 of top cover 69 and battery case 62 engaged, battery cover 64 was assembled on the battery case 62, thereby has formed secondary cell 60.
The battery case 62 that is inserted with battery laminate 61 is made of metal shell, wherein, basically a flat cubical face is to open wide, and according to the shape of battery laminate 61, it is the shape of substantial rectangular that battery case 62 forms for its cross section.In battery case 62, be used to insert the opening 63 of battery laminate 61, be molded as by the metal material of pull and stretch such as iron, only be formed on the face.By wall thickness being adjusted into about 0.3mm, this battery case 62 can form elongated shape, thereby when not considering that distinguish holding of battery unit 3, the thickness of itself can control to maximum; Simultaneously, by using metal material, battery case 62 can have anti-mechanical strength such as the various impacts of falling and shaking.Opening 63 is insertion ends, therefrom inserts battery laminate 61, after inserting battery laminate 61, with battery cover 64 opening 63 is clogged.For this reason, be installed with a plurality of conjugate foramens 76 that engage with outstanding copulational protuberance 77 on the battery cover 64 on the periphery of opening 63.In conjugate foramen 76, when battery cover 64 was inserted in the opening 63, copulational protuberance 77 outstanding on the battery cover 64 was clamp-oned in bending in the opening 63, engages with conjugate foramen 76 then.Like this, battery cover 64 just is assembled on the battery case 62.
Incidentally, be similar to above-mentioned secondary cell 1, on battery case 62, when it with opening 63 opposed bottom surface portions on outside when being connected to the battery installation section of electronic equipment, or when it is installed on the battery installation section of battery charger 80, can form the conjugate foramen that engages with outstanding copulational protuberance on the battery installation section.And coupling recess can be arranged on the battery installation section, and copulational protuberance can be formed on the bottom surface sections of battery case 62.Similarly, similar to above-mentioned secondary cell 1, on top cover 69, when being connected to the battery installation section of electronic equipment outside on its precalculated position at positive 69c, or when it is installed to the battery installation section of battery charger 80, can form the concave copulae that engages with outstanding copulational protuberance on the battery installation section.And coupling recess can be arranged on the battery installation section, and prominent junction surface can be formed on the positive 69c of top cover 69.
Incidentally, on battery case 62, be similar to above-mentioned secondary cell 1, battery case 62 is being connected with battery cover 64, insert battery laminate 61, and after with battery cover 64 opening 63 being clogged, paste the outside labeling 15 of insulation and it goes up the information labeling 49 that description has secondary cell 60 various information.The structure of outside labeling 15 and effect are identical with situation on pasting above-mentioned secondary cell 1.
And, be the situation of rectangle basically except battery case 62 forms for its cross section, it is trapezoidal basically that battery case 62 can also form for its cross section, wherein, the edge line on the short side direction forms circular arc, as shown in figure 27.By adopting this shape, can prevent that secondary cell 60 is inserted in the battery installation section such as the electronic equipment of digital camera 10 or battery charger 80 mistakenly.
Above-mentioned secondary cell 60 can followingly be made.At first, as shown in figure 28, cut cell assembly 27 as follows, promptly, cut two or more battery units 3 continuously, and fold along stacked width 28 according to the quantity of piling up of battery unit 3, so that battery unit 3 is stacked, thereby formed battery laminate 61.
Then, as shown in figure 29, positive electricity end daughter board 66 and the negative electrode terminal plate 67 installed on the positive electrode terminal 21 of drawing from each battery unit 3 of battery laminate 61 and negative electrode terminal 22 and the substrate 65 weld together.Incidentally, on substrate 65, be pre-formed circuit pattern and positive electrode terminal portion 71 and the negative electrode terminal portion 72 that serial or parallel connection connects respective battery unit 3, and positive electrode terminal portion 71 and negative electrode terminal portion 72 are installed with independent technology; And with keeper 68 supporting substrates 65.
Then, keeper 68 and top cover 69 are interconnected,, battery laminate 61 is inserted into subsequently in the opening 63 of battery case 62 again to form battery cover 64.At this moment, on battery laminate 61, paste by the elastic component 55 that it is provided with dielectric film 56 on the insertion end face 3b of each battery unit 3, when inserting battery case 62, utilize dielectric film 56 can realize the insulation of packaging part 23 and battery case 62 inwalls, perhaps utilize elastic component 55 packaging part 23 can be fixed on the battery case 62.
After inserting battery laminate 61, battery cover 64 is assembled in the opening 63 of battery case 62.After this, outside labeling 15 is pasted on the battery case 62.As previously mentioned, outside labeling 15 becomes the decoration labeling of secondary cell 60, also can be designed to realize the insulation of metal battery shell 62.And outside labeling 15 is provided with: interarea portion 16, the outer peripheral edges of the battery case 62 that is used for curling; First volume pars convoluta 17, battery case 62 bottom surface sections that are used for curling vertically on two ends beyond the zone; And second curled portion 18, the zone beyond the terminal hole 70 that forms on the top cover 69 of the battery cover 64 that is used for curling.
Like this, in secondary cell 60, the two ends of battery case 62 bottom surface sections become the junction surface that engages with the fastener that is provided with in the electric device battery accommodation section.And,, can guarantee the assembling intensity between battery cover 64 and the battery case 62, and can not influence planarization and outward appearance so that when curling battery cover 64 smoothly when pasting outside labeling 15.
According to the secondary cell 60 of such structure, because of needs pile up therein the battery of a plurality of battery units 3 laminate 61 is arranged by using, can obtain to have the secondary cell of high battery capacity or the secondary cell of long life at an easy rate.And, in secondary cell 60,, therefore can relatively easily obtain high power capacity or long life owing to corresponding battery unit 3 serial or parallel connections can be connected according to the circuit pattern that forms on the substrate.
Then, with the battery charger of describing to above-mentioned secondary cell charge 80.Battery charger 80 is as common battery charger in the multiple secondary cell 1, these secondary cell 1 profiles are identical, but different places are, according to the difference of battery capacity or compliant electronic device, whether have remaining power life-span Presentation Function, different between type that can realize repid discharge and the type that can not realize repid discharge, the positive electrode terminal portion 37 and the negative electrode terminal portion 38 that face positive 1c are arranged on the point-symmetric substantially position.
As shown in figure 30, battery charger 80 has: battery charge main body 81; Battery compartment 82 wherein accommodates secondary cell 1; Electrode terminal 83 is arranged in the battery compartment 82, and contacts with the positive electrode terminal portion 37 and the negative electrode terminal portion 38 of secondary cell 1; And hyalomere 84, can be by hyalomere 84 from the visual observation electrode terminal 83 of battery charger main body 81.
As shown in figure 30, battery charger main body 81, for example, by constituting than secondary cell 1 big cube, and battery compartment 82 is formed on the 81a of interarea portion.Battery compartment 82 is the recesses that have with secondary cell 1 substantially the same size; And electrode terminal 83 is formed on the side wall portion 82a corresponding to positive electrode terminal portion 37 and negative electrode terminal portion 38, and wherein, the terminal hole 48 that positive electrode terminal portion 37 and negative electrode terminal portion 38 are provided with from the positive 1c of secondary cell 1 is towards the outside.In addition, in battery charger main body 81, hyalomere 84 that can intensifier electrode terminal 83 visualitys begins to be formed up to the 81a of interarea portion from the side wall portion 82a that is formed with electrode terminal 83.By hyalomere 84 is set, the user of battery charger 80 can observe the position of electrode terminal 83 at an easy rate from upside.And, secondary cell 1 is being installed in the process of battery compartment 82, can confirm the positive electrode terminal portion 37 of secondary cell 1 one sides and the electrode terminal that negative electrode terminal portion 38 is connected to battery charger main body 81 1 sides at an easy rate, and can direction of insertion is not mistaken.In addition, battery charger main body 81 is provided with the flexible cord that is used to receive external power source, the display part that is used for showing by LED element or liquid crystal charged state, and some other parts, but omits these component detail here.
Here, as previously mentioned, the secondary cell 1 that is installed in the battery charger 80 forms as follows: according to function, for example, whether be high battery capacity type, whether have by LED, liquid crystal or set type components show the remaining power life-span function, compliant electronic device difference or can repid discharge, the arrangement of positive electrode terminal portion 37 and negative electrode terminal portion 38 is different.Promptly, although the function difference, and constitute the external shape of the battery case 2 of secondary cell 1 and battery cover 4 when still identical, the positive electrode terminal portion 37 and the negative electrode terminal portion 38 that on the substrate 35 that constitutes battery cover 4, form, according to above-mentioned each function, and be arranged on the point-symmetric basically position.Similarly, be arranged on the electrode terminal employing of electronic equipment one side and the positive electrode terminal portion 37 and the 38 corresponding arrangements of negative electrode terminal portion of corresponding secondary cell.Like this, even secondary cell 1 is installed on the incompatible electronic equipment, because the positive electrode terminal portion 37 and the negative electrode terminal portion 38 of secondary cell 1 one sides can not contact with the electrode terminal of electronic equipment one side setting, thereby can prevent the wrong trouble that causes of installing.Incidentally, at this moment,, can prevent with metal battery shell 2 and directly contact because the positive 36c of the top cover 36 that the electrode terminal of electronic equipment one side and synthetic resin are made contacts.
On the other hand, to secondary cell 1 charging the time, if prepare a plurality of battery chargers corresponding to every kind of function, this uses a kind of charger with regard to requiring the user for each purpose, and this too complex.In addition, also require product vendor to produce and manage polytype battery charger, this is equally also too complicated.
So, in this battery charger 80, the different positive electrode terminal portion 37 in position and a plurality of secondary cells 1 of negative electrode terminal portion 38 change installation direction and can make it to realize shared for having corresponding every kind of function.Particularly, in secondary cell 1, owing to positive electrode terminal portion 37 and negative electrode terminal portion 38 corresponding every kind of functions are arranged on the point-symmetric basically position, as shown in figure 31, when wherein positive electrode terminal portion 37 and negative electrode terminal portion 38 are arranged on secondary cell 1B Rotate 180 on the point symmetry position basically and spend, 1A contrasts with secondary cell, and the positive electrode terminal portion 37 of two secondary cell 1A, 1B and negative electrode terminal portion 38 become and be in same position.Therefore, when secondary cell 1A was installed in the battery charger 80, the top 1a of short side was positioned to upwards; And when secondary cell 1B is installed in the battery charger 80, secondary cell 1B Rotate 180 degree, 1b is positioned to downwards below making.Like this, in all secondary cell 1A, 1B, contact with the electrode terminal 83 that battery charger 80 1 sides form, can realize charging by making positive electrode terminal portion 37 and negative electrode terminal portion 38.
Incidentally, regardless of the installation direction of secondary cell 1A, 1B, can confirm at an easy rate whether each positive electrode terminal portion 37 and negative electrode terminal portion 38 contact with the electrode terminal 83 of battery charger 80 by hyalomere 84.And, by being used to show the display part of charged state or analogue, can confirm whether the installation direction of secondary cell 1A, 1B is correct.
Here, when secondary cell 1A installs towards the mode of top with following 1b, and secondary cell 1B with top 1a when the mode of top is installed because each positive electrode terminal portion 37 and negative electrode terminal portion 38 all can not contact with electrode terminal 83, therefore can not realize charging.At this moment, because the positive 36c of the top cover 36 that electrode terminal 83 and synthetic resin are made contacts, can prevent with the direct of metal battery shell 2 contacting.In addition, even secondary cell 1A, 1B install in the mode that positive 1a and back 1d put upside down,, can not realize charging because electrode terminal 83 contacts with the back 1d of secondary cell 1 yet.At this moment, because the first volume pars convoluta 17 of the outside labeling of being pasted on electrode terminal 83 and battery case 2 bottom surfaces 15 contacts, can prevent with the direct of metal battery shell 2 contacting.
In addition, this type of compatible battery charger can followingly be constructed.Shown in figure 32, battery charger 90 is provided with: battery charger main body 91 is rectangular shape basically; Keeping arm 92 is supported slidably by side 91a respect to one another, the 91b of battery charger main body 91, and supports secondary cell 1; And electrode terminal 93, be arranged on the positive 91c of battery charger main body 91.On this battery charger 90, positive electrode terminal portion 37 wherein and negative electrode terminal portion 38 are arranged on the secondary cell 1A or the 1B of point symmetry position basically, can install from a direction or another direction of the keeping arm 92 that keeps secondary cell 1.
Keeping arm 92 is provided with: a pair of arm 95,95, supported slidably by two side 91a, 91b of battery charger main body 91; And maintaining part 96, it is crossed a pair of arm 95,95 and is arranged on the tip portion of arm 95,95, and keeps secondary cell 1A or 1B.
Arm 95,95 is vertical part, when it is supported by two side 91a, 91b of battery charger main body 91 slidably with the interval that is substantially equal to secondary cell 1 width, arm 95,95 outwards can be pulled out to positive 91c one side of battery charger main body 91.The maintaining part 96 that is formed on the tip portion of arm 95,95 is the element of T shape shape basically, it supports the battery case 2 of secondary cell 1, and has a supporting walls 97, this supporting walls 97 constitutes the bottom surface sections of the positive and support cells shell 2 of battery charger main body 91, basically is the place at center and place facial 98 from supporting walls 97 short transverses, cross arm 95,95, positive 91c one to battery charger main body 91 is side-prominent, wherein, two face is placed side 98a, 98b, is placed with the rearward end of battery case 2 on it.
When arm 95,95 when the back of battery charger main body 91 91d one side is slided, supporting walls 97 becomes the front of battery charger main body 91.And, when arm 95,95 slides and secondary cell 1 when being installed on the support arm 92 bottom surface sections 7 of supporting walls 97 support cells shells 2 to the positive 91c of battery charger main body 91 side.
Placing on facial 98, on the direction of 91 positive 91c one sides from supporting walls 97 to the battery charger main body, placed side 98a, 98b are the inclined plane, centroclinal on positive 91c thickness direction.In addition, secondary cell 1 is being installed in the process of keeping arm 92, place the rearward end of battery case 2, tilt as follows and place facial 98, promptly the positive 36c of the top cover 36 faced of positive electrode terminal portion 37 and negative electrode terminal portion 38 contacts with the electrode terminal 93 that the positive 91c of battery charger main body 91 goes up formation.That is, place two placed side 98a of facial 98 when the rearward end of battery case 2 is placed on, when 98b is last, positive electrode terminal portion 37 and negative electrode terminal portion 38 contact with the electrode terminal 98 of battery charger main body 91.
Keeping arm 92 keeps secondary cell 1 by a pair of arm 95,95, placed side 98a or placed side 98b and supporting walls 97.At this moment, shown in Figure 33 A and Figure 33 B, according to function, keeping arm 92 remains on secondary cell 1A on the 98a of placed side respectively, secondary cell 1B is remained on the 98b of placed side, and wherein, positive electrode terminal portion 37 and negative electrode terminal portion 38 are arranged on the point-symmetric basically position.At this moment, secondary cell 1A, 1B all are that the mode of inserting surface is installed on the keeping arm 92 below each.In addition, remain on secondary cell 1A and the secondary cell 1B that remains on the 98b of placed side on the 98a of placed side, installing in the Rotate 180 degree each other.Like this, in all secondary cell 1A, 1B, because positive electrode terminal portion 37 and negative electrode terminal portion 38 turn to same position, thus they can contact with the electrode terminal 93 that the positive 91c side of battery charger main body 91 forms, thereby can finish charging.
Incidentally, as secondary cell 1A, 1B, when putting upside down inserting surface, when top 1a side is installed, if secondary cell 1A is installed in placed side 98b side, if or secondary cell 1B is installed in placed side 98a side, because not going up the electrode terminal 93 that forms with the positive 91c of battery charger main body 91, positive electrode terminal portion 37 and negative electrode terminal portion 38 do not contact, so can not charge.At this moment, because the positive 36c of the top cover 36 that electrode terminal 93 and synthetic resin are made contacts, can prevent with the direct of metal battery shell 2 contacting.And, when above secondary cell 1A, 1B are putting upside down, installing 1a and back 1d the time, because electrode terminal 93 contacts with the back 1d of secondary cell 1A and 1B, so can not charge.At this moment, because the first volume pars convoluta 17 of the outside labeling of being pasted on electrode terminal 93 and battery case 2 bottom surfaces 15 contacts, thereby can prevent that electrode terminal 93 from directly contacting with metal battery case 2.
In addition, as shown in figure 34, because when not using, arm 95,95 can slide to the back of battery charger main body 91 91d side, make battery charger 90 have fabulous portable characteristics, and can prevent that arm 95,95 etc. from rupturing.
In addition, this type of compatible battery charger can followingly be constructed.As shown in figure 35, battery charger 100 is provided with: battery charger main body 101, and it is rectangle basically; Battery installation section 102, it is arranged on the top 101a of battery charger main body 101; Electrode terminal 103, it is formed on battery installation section 102 inside, and contacts with positive electrode terminal portion 37 and negative electrode terminal portion 38; And a pair of battery keeper 104A, 104B, it is rotatably provided on the top 101a of battery charger main body 101, and keeps secondary cell 1A, 1B.On this battery charger 100, arrangement according to positive electrode terminal portion 37 and negative electrode terminal portion 38, be installed on battery keeper 104A or the 104B by the direction that changes secondary cell 1, thereby the electrode terminal 103 of battery installation section 102 is contacted with positive electrode terminal portion 37 and negative electrode terminal portion 38, not only can guarantee the compatibility of multiple secondary cell 1A, 1B, can also when direction is improper, forbid being inserted among battery keeper 104A or the 104B.Therefore, can avoid the mistake of secondary cell 1A, 1B to install.
It is the shape of rectangular box shape basically that battery charger main body 101 forms, and from positive 1c side the battery installation section 102 of secondary cell 1 is installed, and what be formed at top 101a is the position at center basically.And on battery charger main body 101,101a upward is provided with a pair of battery keeper 104A, 104B rotatably towards the top in the above.
Battery installation section 102 is recesses, and wherein, secondary cell 1 is installed from face side, and according to the shape of secondary cell 1, battery installation section 102 is opened wide to being the shape of rectangle basically.On the bottom surface sections of battery installation section 102, be formed with and positive electrode terminal portion 37 and negative electrode terminal portion 38 electrode in contact terminals 103, this positive electrode terminal portion 37 and negative electrode terminal portion 38 are towards the positive 1c of secondary cell 1.
Battery keeper 104A, 104B keep being installed in secondary cell 1A, the 1B in the battery installation section 102 respectively, and wherein, shown in Figure 36 A, battery keeper 104A keeps secondary cell 1A; Shown in Figure 36 B, battery keeper 104B keeps secondary cell 1B.Battery keeper 104A, 104B have: battery compartment 105A, 105B are used for holding therein secondary cell 1; And a pair of arm 106A, 106B, it is given prominence to and a pair of side surface part formation from each battery compartment 105A, 105B respectively continuously, and is rotatably supported by battery charger main body 101.And the formation of battery keeper 104 makes battery compartment 105A when the bottom that utilizes a pair of arm 106A is as pivot point, and the face side of 101a is rotatable towards the top above battery charger main body 101; And the formation of battery keeper 104B makes battery compartment 105A when the bottom that utilizes a pair of arm 106B is as pivot point, and the back side of 101a is rotatable towards the top above battery charger main body 101.
According to the shape of secondary cell 1, it is the shape of rectangular box shape basically that battery compartment 105A, 105B form, wherein, the interarea that secondary cell 1 is inserted and pulls down and be positioned at battery installation section 102 sides below open wide.In addition, can battery compartment 105A, 105B be installed by secondary cell 1 is inserted from following 1b side.
Battery keeper 104A, 104B install as follows, and when battery compartment 105A and battery compartment 105B rotated up towards battery charger main body 101, the open side of corresponding interarea toward each other.That is, in battery compartment 105A, 105B, when be installed in battery charger main body 101 above 101a when going up, its each back face wall is towards the top, as shown in figure 35; When battery compartment 105A rotates up, in battery keeper 104A, the back face wall of battery compartment 105A is towards the back of battery charger main body 101 side, shown in Figure 36 A, and in battery keeper 104B, the back face wall of battery compartment 105B is towards the front of battery charger main body 101 side, shown in Figure 36 B.Like this, be installed in secondary cell 1A and the secondary cell 1B that is installed among the battery keeper 104B among the battery keeper 104A, go up set battery installation section 102 and installation relative to one another with respect to 101a above the battery charger main body 101.
A pair of arm 106A, 106B when the battery installation section 102 with battery charger main body 101 is clipped in therebetween, are rotatably supported; When along battery charger main body 101 face side or back sideway swivel, they can remain battery keeper 104A, 104B basically and flush with top 101a, otherwise, when rotating up, they lift battery keeper 104A, 104B, thereby make secondary cell 1 be installed in wherein.
In a pair of arm 106A, 106B, when clamping above battery charger main body 101 two ends longitudinally of battery installation section 102 set on the 101a, support corresponding bottom.And because battery keeper 104A forms and has the narrower width than battery keeper 104B, the position that the bottom of arm 106A is supported in the battery charger main body 101 is more inner than the bottom of arm 106B.Like this, in battery keeper 104A and battery keeper 104B, when any one rotates up, forbid another rotation.Therefore, always have only one can contact among secondary cell 1A and the secondary cell 1B with electrode terminal 103.
Utilizing above-mentioned charger 100 when secondary cell 1A, 1B charge, wherein, positive electrode terminal portion 37 and negative electrode terminal portion 38 are arranged on point-symmetric basically position corresponding to every kind of function, according to the position of secondary cell 1 terminal, any one among battery keeper 104A or the 104B rotates up.When battery keeper 104A rotated up (seeing Figure 36 A), secondary cell 1A was that the mode of inserting end face is inserted among the battery compartment 105A with following 1b.Like this, in secondary cell 1A, positive 1c side is installed in the battery installation section 102, and positive electrode terminal portion 37 and negative electrode terminal portion 38 contact with electrode terminal 103, thereby realizes charging.
Incidentally, when inserting, top 1a side then can forbid being inserted among the battery compartment 105A when having a mind to secondary cell 1A.And, when secondary cell 1B is inserted among the battery keeper 104A, because positive electrode terminal portion 37 and negative electrode terminal portion 38 relatively form, making needs the Rotate 180 degree, positive electrode terminal portion 37 and negative electrode terminal portion 38 can not contact with the electrode terminal 103 of battery installation section 102, thereby can not charge.At this moment, because the positive 36c of the top cover 36 that electrode terminal 103 and synthetic resin are made contacts, can prevent with the direct of metal battery shell 2 contacting.In addition, when secondary cell 1A oppositely inserts,, make and to charge because electrode terminal 103 contacts with the rear side 1d of secondary cell 1.At this moment, because the first volume pars convoluta 17 of the outside labeling of being pasted on the bottom surface sections 7 of electrode terminal 103 and battery case 2 15 contacts, can prevent with the direct of metal battery shell 2 contacting.
In addition, (see Figure 36 B) when battery keeper 104B rotates up, secondary cell 1B is that the mode of inserting end face is inserted among the battery compartment 105B with following 1b.Like this, in secondary cell 1B, positive 1c side is installed in the battery installation section 102, here, because it is opposite with secondary cell 1A, positive electrode terminal portion 37 and negative electrode terminal portion 38 are formed on the point-symmetric basically position, as secondary cell 1B, with be inserted into battery compartment 105A in the opposite direction of secondary cell 1A, when being inserted among the battery compartment 105B, positive electrode terminal portion 37 and negative electrode terminal portion 38 with respect to the electrode terminal 103 of battery installation section 102, turn on the position identical with secondary cell 1A.Therefore, in secondary cell 1B, positive electrode terminal portion 37 and negative electrode terminal portion 38 contact with electrode terminal 103, thereby charge.
Incidentally, when inserting, top 1a side then can forbid being inserted among the battery compartment 105B when having a mind to secondary cell 1B.And, when secondary cell 1A is inserted among the battery keeper 104B, because make relative with the position of negative electrode terminal portion 38 of the positive electrode terminal portion 37 that forms needs the Rotate 180 degree, positive electrode terminal portion 37 and negative electrode terminal portion 38 can not contact with the electrode terminal 103 of battery installation section 102, therefore can not charge.At this moment, because the positive 36c of the top cover 36 that electrode terminal 103 and synthetic resin are made contacts, can prevent with the direct of metal battery shell 2 contacting.In addition, when secondary cell 1B oppositely inserts,, make and to charge because electrode terminal 103 contacts with the rear side 1d of secondary cell 1.At this moment, because the first volume pars convoluta 17 of the outside labeling of being pasted on the bottom surface sections 7 of electrode terminal 103 and battery case 2 15 contacts, can prevent to contact with the direct of metal battery shell 2.
Consider foregoing, in all secondary cell 1A, 1B, because positive electrode terminal portion 37 turns on the identical position with negative electrode terminal portion 38, the electrode terminal 103 that forms on positive electrode terminal portion 37 and negative electrode terminal portion 38 and the battery installation section 102 contacts, and therefore can realize charging.Thereby, can CB common battery charger 100.
And, in battery charger 90,, and can avoid 104 fractures of battery keeper because when not using, battery keeper 104 can rotate to upside 101a one side of battery charger main body 101, makes battery charger 90 have splendid portable characteristics.
It should be appreciated by those skilled in the art that within the scope of claims and equivalent thereof,, can carry out various changes, combination, selection part and replacement wherein the present invention according to proposing designing requirement and other factors.

Claims (15)

1. a secondary cell is used for electronic equipment, and it is installed in the electronic equipment, thereby to described electronic equipment supply electric power, comprising:
Battery unit, wherein, positive electrode, negative electrode and electrolyte are contained in the packaging part, and draw respectively from the same side of described packaging part from the positive electrode terminal and the negative electrode terminal of described positive electrode and described negative electrode;
The metal battery shell wherein, is formed with and inserts described battery unit and described battery unit is contained in one of them opening, thereby the side of drawing described positive electrode terminal and described negative electrode terminal is towards described open side; And
Lid is made by synthetic resin, is used to clog the opening of described battery case, and described lid comprises: keeper is used for inserting and keeping electrode film and negative electrode plate; Substrate, the one side of described substrate are provided with the positive electricity end daughter board and are formed with positive electrode terminal portion and negative electrode terminal portion with the negative electrode terminal plate and on relative another side; And top cover, it clamps described substrate with described keeper, and engages with the opening of described battery case.
2. secondary cell according to claim 1, wherein, described lid is provided with the junction surface that the part to be joined that is provided with on the described opening with described battery case engages; And wherein, after the described positive electrode terminal and described negative electrode terminal that connect described battery unit, described junction surface engages with having the part to be joined that described battery unit is contained in described battery case wherein, thereby clogs described battery case and finish assembling.
3. secondary cell according to claim 1 wherein, is formed with the junction surface of depressions or protrusions on the outer surface of described battery case, its battery charger with described electronic equipment or described secondary cell engages.
4. secondary cell according to claim 1, wherein, difference according to function, described portion of terminal is formed on the point-symmetric substantially position, and whether described function comprises the battery capacity difference, whether have the type of remaining power life-span Presentation Function, compliant electronic device and need to recharge fast.
5. secondary cell according to claim 3, wherein, described battery case with described opening opposed bottom surface portion on formed concave engagement portions be grounding electrode.
6. secondary cell according to claim 1, wherein, one end of described electrode film and described negative electrode plate is connected to described positive electrode terminal and described negative electrode terminal respectively, and the other end is connected to positive electricity end daughter board and negative electrode terminal plate respectively, and described positive electricity end daughter board and described negative electrode terminal plate are connected to the described positive electrode terminal portion of being installed on the described substrate and described negative electrode terminal portion respectively; And described top cover is provided with terminal hole and junction surface, can be outwardly from positive electrode terminal portion described in the described terminal hole and described negative electrode terminal portion, the part to be joined that is provided with in the described opening of described junction surface and described battery case engages, thereby clamps described substrate with described keeper.
7. secondary cell according to claim 6 wherein, is pasted with reinforcement on the connecting portion of described positive electrode terminal and described negative electrode terminal and described electrode film and described negative electrode plate.
8. secondary cell according to claim 6 wherein, uses aluminium as described positive electrode terminal, and from the upside welding of the described electrode film made by nickel.
9. secondary cell according to claim 1 also comprises the outside labeling of insulation, and it has interarea portion and curled portion, and described interarea portion pastes on the outer peripheral edges of described battery case, and described curled portion is used for curling and is positioned at the bottom surface sections of described opening opposite side.
10. secondary cell according to claim 9 wherein, curls on the zone beyond two ends of described curled portion on the described bottom surface sections of the described battery case that forms rectangle is vertical.
11. secondary cell according to claim 9, wherein, when described secondary cell was inserted into described electronic equipment with the direction opposite with direction of insertion or be used for battery installation section to the battery charger of described secondary cell charge, described curled portion was with relative towards the described electronic equipment or the described electrode terminal on the described battery charger side of described battery installation section.
12. secondary cell according to claim 9, wherein, on described bottom surface sections, can't help zone that described curled portion curls is the junction surface that engages with described electronic equipment or the fastener that is used for being provided with on the described battery installation section to the battery charger of described secondary cell charge.
13. secondary cell according to claim 9, wherein, on described bottom surface sections, can't help the zone that described curled portion curls is grounding parts.
14. secondary cell according to claim 1 also comprises outside labeling, it has interarea portion and curled portion, and described interarea portion pastes on the described outer peripheral edges of described battery case, and described curled portion is used for the described lid that curls and engage with described opening.
15. secondary cell according to claim 14, wherein, described curled portion is curled in the zone beyond described lid described portion of terminal outwardly.
CNB2006101098110A 2005-08-12 2006-08-14 Secondary cell Expired - Fee Related CN100555712C (en)

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JP2007048720A (en) 2007-02-22

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