CN103579541A - Power battery - Google Patents

Power battery Download PDF

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Publication number
CN103579541A
CN103579541A CN201210256019.3A CN201210256019A CN103579541A CN 103579541 A CN103579541 A CN 103579541A CN 201210256019 A CN201210256019 A CN 201210256019A CN 103579541 A CN103579541 A CN 103579541A
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CN
China
Prior art keywords
unit
plug
hole
inner chamber
cell
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201210256019.3A
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Chinese (zh)
Inventor
杨俊�
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201210256019.3A priority Critical patent/CN103579541A/en
Publication of CN103579541A publication Critical patent/CN103579541A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/04Construction or manufacture in general
    • H01M10/0422Cells or battery with cylindrical casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/04Construction or manufacture in general
    • H01M10/049Processes for forming or storing electrodes in the battery container
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)

Abstract

The embodiment of the invention relates to a power battery. The power battery comprises: a shell used for defining an inner cavity for accommodating electrolyte, at least one columnar electrical core arranged in the inner cavity of the shell, a cathode lug and an anode lug respectively electrically connected with the cathode and the anode of the electrical core, and a plug-in unit of which the shape is adapted to the inner cavity of the shell; and the plug-in unit is provided with at least one through hole for accommodating the electrical core, and when the electrical core is installed in the through hole, a scheduled gap is formed between the electrical core and the through hole. According to the embodiment of the invention, the plug-in unit is employed for accommodating the columnar electrical core, so that not only effective support and protection are provided for the columnar electrical core and the use amount of the electrolyte is reduced, but also the manufacturing cost is low, assembling is convenient, and the production cost of the power battery is reduced.

Description

Electrokinetic cell
Technical field
The embodiment of the present invention relates to field of batteries, more particularly, relates to electrokinetic cell.
Background technology
Great-capacity power battery is widely used in the fields such as electric bicycle, electric bicycle, electric automobile, ups power, large-scale portable power tool, energy-storage system at present.
The pole piece structure of traditional power battery adopts a kind of cylindric volume cored structure, is commonly referred to as cylindric battery core.It is cylindric that this battery core utilizes bipolar sheets to be wound into.In application process, by a plurality of cylindric battery cores, for example 2-20 battery core is placed side by side in the housing of electrokinetic cell, has overcome electrokinetic cell capacity limit, is a kind of more satisfactory battery core.But the subject matter of its existence has: 1) internal voids is too large, causes the waste of a large amount of electrolyte, high cost not only, and easily aerogenesis is too much, causes battery container bulging.2) volume core between only wired contact as support, battery is in carrying or with in equipment (as electric automobile) irregular movement, be subject to acceleration action, extruding mutually between volume core, causes the distortion of volume core, affects battery performance, in serious situation, may cause lug to come off because deformation is excessive, cause battery failure.
A kind of known technical scheme adopts granular filler to fill the space between battery core.But in general, battery core in being installed to housing of power cell before, need soldering polar ear.Be installed to again in battery container after soldering polar ear, when being unfavorable for carrying out filler filling, particularly battery core and lying in a horizontal plane in battery container, be difficult to eliminate the space between battery core.In addition, the gap between filler particles also cannot be eliminated.If use flowable state coagulating type filler, may stop up battery core duct, cause electrolyte cannot enter battery core, destroy battery performance.
Summary of the invention
The embodiment of the present invention has proposed a kind of electrokinetic cell, by volume cored structure support component, has realized effective support and surge guard to cylindrical electrical core, and has reduced the electrolyte use amount of electrokinetic cell, has reduced the production cost of electrokinetic cell.
First aspect, the embodiment of the present invention has proposed a kind of electrokinetic cell, and described electrokinetic cell comprises:
Housing, described housing is defined for the inner chamber that holds electrolyte;
Be arranged at least one the column battery core in the described inner chamber of described housing;
The anode ear and the negative electrode lug that are electrically connected to the both positive and negative polarity of described battery core respectively;
Plug-in unit, the described inner chamber of the adaptive described housing of shape of described plug-in unit, and on described plug-in unit, be provided with for holding at least one through hole of described battery core, when described battery core is assemblied in described through hole, between described battery core and described through hole, form predetermined gap.
In conjunction with first aspect, in the possible execution mode of the first, the described inner chamber of described housing is rectangular shape, described plug-in unit is the rectangular shape corresponding with described inner chamber, described plug-in unit is combined by least one bound cell, described bound cell is that end face is square cylinder, and each comprises a described through hole described bound cell.
In conjunction with the possible execution mode of the first of first aspect or first aspect, in the possible execution mode of the second, described bound cell consists of 4 arc components, wherein said arc component comprises the groove of quadrant column, at 4 described members, during around the center amalgamation of the groove of described quadrant column, described groove forms described through hole.
In conjunction with first and second kinds of first aspect or first aspect possible execution modes, in the third possible execution mode, the described inner chamber of described housing is rectangular shape, described plug-in unit is the rectangular shape corresponding with described inner chamber, described plug-in unit consists of two plug-in unit half portions, described plug-in unit half portion comprises at least one semi-cylindrical groove, and while coordinating in described plug-in unit half portion, semi-cylindrical groove corresponding in described plug-in unit half portion forms described through hole.
In conjunction with first aspect or first aspect first to the third possible execution mode, in the 4th kind of possible execution mode, the described inner chamber of described housing is cylindric, described plug-in unit is corresponding with described inner chamber cylindric, and the described through hole on described plug-in unit is uniformly distributed around the center of circle of described plug-in unit.
According to the embodiment of the present invention, utilize plug-in unit to hold column battery core, not only column battery core is provided effective support and protection, reduced the consumption of electrolyte, and cheap for manufacturing cost, easy to assembly, reduced the production cost of electrokinetic cell.The plug-in unit that modularization forms, is convenient to utilize single module to expand, and has further improved the flexibility of electrokinetic cell production process.Plug-in unit, for requiring battery core horizontal positioned or the not restriction of the vertical electrokinetic cell of placing, can be realized identical technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 be according in the electrokinetic cell of the embodiment of the present invention for the perspective view of the plug-in unit of battery core is installed;
Fig. 2 is the perspective view that forms the bound cell of plug-in unit;
Fig. 3 is the perspective view of the stacked formation plug-in unit of a plurality of bound cell levels;
Fig. 4 is the perspective view that a plurality of bound cell tile verticallies form plug-in unit;
Fig. 5 is the perspective view that forms plug-in unit half portion of plug-in unit;
Fig. 6 is the perspective view that forms the arc component of plug-in unit;
Fig. 7 be according in the electrokinetic cell of the embodiment of the present invention for the perspective view of the another kind of plug-in unit of battery core is installed;
Fig. 8 is the perspective view of the fan-shaped cylinder of plug-in unit shown in pie graph 7.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As aforementioned this electrokinetic cell, generally comprise: electric conducting material is metal housing for example, described housing is defined for the inner chamber that holds electrolyte and cylindric battery core; A plurality of cylindric battery cores placed side by side.Battery core comprises anode ear and negative electrode lug.Conventionally, the anode ear of each battery core is for example electrically connected to the positive terminal on housing by Laser Welding, and negative electrode lug is for example electrically connected to the negative terminal on housing by Laser Welding.In order to simplify, one of them can be soldered to anode ear or negative electrode lug on housing, and wherein another is welded on the corresponding pole in problem.
In the application scenarios of this general electrokinetic cell, the arrangement that the embodiment of the present invention lays particular emphasis on battery core in housing improves, so in the description of the embodiment of the present invention and accompanying drawing, has omitted the part parts of electrokinetic cell.
Fig. 1 be according in the electrokinetic cell of the embodiment of the present invention for a kind of schematic configuration diagram of the plug-in unit of battery core is installed.As shown in Figure 1, the inner chamber of the housing of the adaptive electrokinetic cells of plug-in unit 100 shapes, for example, at housing and inner chamber thereof, while being square, while that is to say rectangular shape, the external shape of plug-in unit 100 be also rectangular shape, and the inner chamber of size adaptation housing.In this case, the plug-in unit 100 of rectangular shape is provided with at least one through hole 120 that holds battery core.The diameter of the adaptive column battery core of diameter of through hole 120.As required, when battery core is assemblied in through hole 120, battery core can and the hole wall of through hole 120 between form predetermined gap, the gap of 1mm for example, so that electrolyte can successfully infiltrate battery core.
In concrete application scenarios, battery core may level be arranged in the housing of electrokinetic cell stackedly, and now battery core direction, as shown in the arrow H in Fig. 1, also can vertically be arranged in the housing of electrokinetic cell side by side, and now battery core direction is as shown in the arrow V in Fig. 1.Therefore, the setting party of through hole 120 is to conforming to the direction of battery core insertion housing of power cell.Those skilled in the art understand, in electrokinetic cell design process, can be according to the length equidimension of battery core diameter and length respective design housing of power cell inner chamber, take battery core horizontal positioned as example, the width of housing of power cell inner chamber is slightly larger than battery core diameter, and cavity length is slightly larger than battery core length in housing, so that for to draw positive and negative lug leaving space from two end faces of battery core.The in the situation that of battery core horizontal positioned, housing inner chamber height can carry out corresponding adjustment according to the design capacity of electrokinetic cell, to hold the battery core of varying number.The width of the plug-in unit 100 shown in Fig. 1 is substantially equal to the width of housing inner chamber so that plug-in unit 100 in being positioned over housing inner chamber in, fit with housing inner chamber both sides.
Alternatively, in order to improve the extensibility of plug-in unit 100, to adapt to the needs of the electrokinetic cell of different capabilities, plug-in unit 100 can be resolved into several bound cells, these bound cells can be combined into plug-in unit 100.
According to a kind of possibility, as shown in Figure 2, bound cell 210 can be that cross section is square cylinder.Bound cell 210 along the longitudinal, i.e. the direction of bound cell 210 out to outs, offering cross section is circular through hole 220, for holding battery core.Alternatively, through hole 210 is the end face of inscribe bound cell 200 substantially, to reduce the volume waste in housing inner chamber.According to the design capacity of electrokinetic cell, a plurality of bound cells 200 can be stacked together, as shown in Figure 3, for example, bound cell 200 is flatly fitted in the situation in housing inner chamber; Also a plurality of bound cells 200 vertically can be arranged in together side by side, as shown in Figure 4, for example, bound cell 200 be vertically fitted in the situation in housing inner chamber.
According to alternative dispensing means, as shown in Figure 5, plug-in unit 100 can consist of two symmetrical plug-in units, half portion 510.Each plug-in unit half portion 510 comprises that a plurality of cross sections are semicircular cylindrical recesses 520, and the quantity of cylindrical recesses 520 is corresponding with the battery core quantity that electrokinetic cell needs.When two plug-in unit half portions 510 fasten toward each other, cylindrical recesses 510 corresponding to position in two plug-in unit half portions 510 will engage and form through hole 120, for holding battery core.The advantage of this scheme is, for inconvenience, from end face, directly insert the battery core of through hole 120, battery core first can be placed in the first plug-in unit half portion 510, battery core is being carried out to necessary processing, for example, after soldering polar ear, again the second plug-in unit half portion 510 is fastened in the first plug-in unit half portion 510, forms thus plug-in unit 100 as shown in Figure 1.
Alternatively, for two plug-in units, half portion 510 is bonded together securely, can use securing member, adhesive tape for example, the special-purpose gummed paper of battery particularly, along the neighboring of two plug-in unit half portions 510 that snap together, cross the direction of cylindrical recesses 510, two plug-in units, half portion 510 is wound around and is bonded together.
According to alternative dispensing means, as shown in Figure 6, bound cell 210 as shown in Figure 2 can be formed by 4 identical arc components 610.Bound cell 210 will be formed to arc component 610 along two orthogonal straight liness incisions through its end face center.Arc component 600 comprises the groove 620 of quadrant column, at 4 described arc components, during around the groove 620 center amalgamation of described quadrant column, forms described through hole 120.In other words, arc component 610 for cross section be the cylinder of curved line trangle 610, the bent limit 620 of curved line trangle 610 is quadrant arc.When 4 arc components 610 fasten centripetally with respect to the center of circle on its bent limit separately, bent limit 620 will form circular, and 4 arc components 610 form the bound cell 210 that comprises through hole 220 thus.Then, the bound cell 210 forming thus can further be combined into plug-in unit 100.The advantage of this scheme is, can arrange more neatly battery core.For example, in order to increase the capacity of electrolyte, being positioned at outermost two arc components 610 in plug-in unit 100 two ends can not install.
Alternatively, for arc component 610 is bonded together securely, can use securing member, the special-purpose gummed paper of adhesive tape for example, particularly battery, along the neighboring of 4 arc components 610 that snap together, cross the direction that forms through hole, four arc components 610 are wound around and are bonded together.Also can adopt the identical plug-in unit 100 to being formed by arc component 610 to carry out fastening.
Fig. 7 be according in the electrokinetic cell of the embodiment of the present invention for the another kind of schematic configuration diagram of the plug-in unit 700 of battery core is installed.Plug-in unit 700 user installation are in the cylindrical shell inner chamber of column electrokinetic cell.The shape of plug-in unit 700 is corresponding with cylindrical shell inner chamber.For example, cylindrical shell is cylinder, so the shape of plug-in unit 700 is also cylindric.Columned plug-in unit 700 comprises a plurality of cylindric through holes 720 that run through two end faces of plug-in unit, for holding battery core.The quantity of through hole 720 is corresponding to the battery core quantity of electrokinetic cell design.Alternatively, described through hole 720 is uniformly distributed around the center of circle of plug-in unit 700.
Alternatively, in battery core relatively and plug-in unit 700 is less in the situation that, plug-in unit 700 centers can also arrange a through hole 720.
According to a kind of possibility, as shown in Figure 8, plug-in unit 700 can be that fan-shaped fan-shaped cylinder 810 forms by end face.Each fan-shaped cylinder 810 comprises a through hole 820, for holding battery core.When a plurality of fan-shaped cylinders are combined together centripetally, will form columned plug-in unit 700.For example, in the situation that plug-in unit 700 comprises 4 through holes 720, the end face of fan-shaped cylinder 810 is the fan-shaped of 90 degree.
Alternatively, for the plug-in unit 100 that fan-shaped cylinder 810 is formed is bonded together securely, can use securing member, adhesive tape for example, the special-purpose gummed paper of battery particularly, along the neighboring of 4 fan-shaped cylinders 810 that snap together, cross the direction that forms through hole, fan-shaped cylinder 810 is wound around and is bonded together.
According to the embodiment of the present invention, utilize plug-in unit to hold column battery core, not only column battery core is provided effective support and protection, reduced the consumption of electrolyte, and cheap for manufacturing cost, easy to assembly, reduced the production cost of electrokinetic cell.The plug-in unit that modularization forms, is convenient to utilize single module to expand, and has further improved the flexibility of electrokinetic cell production process.Plug-in unit, for requiring battery core horizontal positioned or the not restriction of the vertical electrokinetic cell of placing, can be realized identical technique effect.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by the described protection range with claim.

Claims (15)

1. an electrokinetic cell, is characterized in that, described electrokinetic cell comprises:
Housing, described housing is defined for the inner chamber that holds electrolyte;
Be arranged at least one the column battery core in the described inner chamber of described housing;
The anode ear and the negative electrode lug that are electrically connected to the both positive and negative polarity of described battery core respectively;
Plug-in unit, the described inner chamber of the adaptive described housing of shape of described plug-in unit, and on described plug-in unit, be provided with for holding at least one through hole of described battery core, when described battery core is assemblied in described through hole, between described battery core and described through hole, form predetermined gap.
2. electrokinetic cell as claimed in claim 1, is characterized in that,
The described inner chamber of described housing is rectangular shape, described plug-in unit is the rectangular shape corresponding with described inner chamber, described plug-in unit is combined by least one bound cell, and described bound cell is that end face is square cylinder, and each comprises a described through hole described bound cell.
3. electrokinetic cell as claimed in claim 2, is characterized in that,
Described bound cell utilizes securing member to tighten together.
4. electrokinetic cell as claimed in claim 3, is characterized in that,
Described securing member is the special-purpose gummed paper of battery.
5. electrokinetic cell as claimed in claim 2, is characterized in that,
Described bound cell consists of 4 arc components, and wherein said arc component comprises the groove of quadrant column, and at 4 described members, during around the center amalgamation of the groove of described quadrant column, described groove forms described through hole.
6. electrokinetic cell as claimed in claim 5, is characterized in that,
Described bound cell utilizes securing member to tighten together.
7. electrokinetic cell as claimed in claim 6, is characterized in that,
Described securing member is the special-purpose gummed paper of battery.
8. electrokinetic cell as claimed in claim 1, is characterized in that,
The described inner chamber of described housing is rectangular shape, described plug-in unit is the rectangular shape corresponding with described inner chamber, described plug-in unit consists of two plug-in unit half portions, described plug-in unit half portion comprises at least one semi-cylindrical groove, when described plug-in unit half portion coordinates, in described plug-in unit half portion, semi-cylindrical groove corresponding to position forms described through hole.
9. electrokinetic cell as claimed in claim 8, is characterized in that,
Described bound cell utilizes securing member to tighten together.
10. electrokinetic cell as claimed in claim 9, is characterized in that,
Described securing member is the special-purpose gummed paper of battery.
11. electrokinetic cells as claimed in claim 1, is characterized in that,
The described inner chamber of described housing is cylindric, and described plug-in unit is corresponding with described inner chamber cylindric, and the described through hole on described plug-in unit is uniformly distributed around the center of circle of described plug-in unit.
12. electrokinetic cells as claimed in claim 5, is characterized in that, described plug-in unit is that at least one fan-shaped fan-shaped cylinder forms by end face, and each comprises a described through hole described fan-shaped cylinder.
13. electrokinetic cells as claimed in claim 12, is characterized in that,
Described bound cell utilizes securing member to tighten together.
14. electrokinetic cells as claimed in claim 13, is characterized in that,
Described securing member is the special-purpose gummed paper of battery.
15. electrokinetic cells as claimed in claim 11, is characterized in that, the center of described plug-in unit arranges a described through hole.
CN201210256019.3A 2012-07-23 2012-07-23 Power battery Pending CN103579541A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106207016A (en) * 2015-05-04 2016-12-07 宁德时代新能源科技股份有限公司 Power battery
CN106784577A (en) * 2016-11-14 2017-05-31 浙江凯恩电池有限公司 The cylindrical battery of disjunctor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1271670A1 (en) * 1999-12-22 2003-01-02 Shenzhen Lb Battery Co., Ltd A thin battery
CN201087905Y (en) * 2007-08-10 2008-07-16 杨明 Cylinder type battery
CN201655899U (en) * 2010-01-12 2010-11-24 深圳市景佑通讯科技有限公司 Combinable battery
CN201663201U (en) * 2010-03-24 2010-12-01 微宏动力系统(湖州)有限公司 Assembled battery with a plurality of wound cells
CN102306712A (en) * 2011-08-31 2012-01-04 华为技术有限公司 Cylinder battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1271670A1 (en) * 1999-12-22 2003-01-02 Shenzhen Lb Battery Co., Ltd A thin battery
CN201087905Y (en) * 2007-08-10 2008-07-16 杨明 Cylinder type battery
CN201655899U (en) * 2010-01-12 2010-11-24 深圳市景佑通讯科技有限公司 Combinable battery
CN201663201U (en) * 2010-03-24 2010-12-01 微宏动力系统(湖州)有限公司 Assembled battery with a plurality of wound cells
CN102306712A (en) * 2011-08-31 2012-01-04 华为技术有限公司 Cylinder battery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106207016A (en) * 2015-05-04 2016-12-07 宁德时代新能源科技股份有限公司 Power battery
CN106784577A (en) * 2016-11-14 2017-05-31 浙江凯恩电池有限公司 The cylindrical battery of disjunctor

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Application publication date: 20140212