CN104037448B - A kind of battery - Google Patents

A kind of battery Download PDF

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Publication number
CN104037448B
CN104037448B CN201410265851.9A CN201410265851A CN104037448B CN 104037448 B CN104037448 B CN 104037448B CN 201410265851 A CN201410265851 A CN 201410265851A CN 104037448 B CN104037448 B CN 104037448B
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China
Prior art keywords
pole core
push rod
battery
substrate
battery according
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CN201410265851.9A
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Chinese (zh)
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CN104037448A (en
Inventor
程应祥
李芬
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Hubei Eve Power Co Ltd
Original Assignee
Guangdong Hundred Million Latitude Sai Ensi New Energy Resources System Co Ltds
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Priority to CN201410265851.9A priority Critical patent/CN104037448B/en
Publication of CN104037448A publication Critical patent/CN104037448A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • 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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Hybrid Cells (AREA)

Abstract

The open a kind of battery of the present invention, comprises housing and is positioned at the pole core of described enclosure interior, and described pole core outer setting has the pole core squeezing device for being extruded by described pole core; At the battery production initial stage, loosen pole core, ensure the abundant infiltration of electrolytic solution; When initial charge, the gas that lithium ion battery produces, it is possible to by repeatedly extruding the position squeezed beyond the core of inside battery pole, the guarantee barrier film saturated imbibition of energy, and positive/negative plate fully contact with barrier film; Ensure the capacity of battery, reduce the internal resistance of battery; Avoid battery swell; Between the battery usage period, ensure fitting tightly of the clamping of pole core and positive and negative electrode and barrier film, increase the reliability that battery uses, prolongation work-ing life.

Description

A kind of battery
Technical field
The present invention relates to technical field of lithium ion, particularly relate to a kind of battery.
Background technology
At the battery production initial stage, if pole core loads shell, too closely, will be unfavorable for that electrolytic solution fully infiltrates pole piece. When producing the initial charge in later stage, battery produces gas cannot be disperseed, and causes battery swell, affects follow-up use, and cell container is by the low side, and the internal resistance of cell is higher, even can cause battery short circuit, causes security incident. If gap when pole core loads shell between pole core and shell is relatively big, electrolytic solution can fully infiltrate really, but the gap of positive/negative plate increases, and will cause ionic transfer lengthening distance, and internal resistance increases, and big current work capacity reduces. More fatal is, lithium ion battery initial charge can produce a large amount of gas, loose pole core will cause a large amount of gas bubbles left in barrier film hole, is originally used for carrying out the hole that lithium ion shuttles back and forth and is occupied by bubble, the internal resistance of cell by significantly increasing, capacity declines to a great extent.
In the life cycle of battery, various vibration can be experienced. Such as battery for electric automobile, batteries for electric tools, battery for mobile phone, aircraft battery etc. The tension force of pole core winding when vibration can disperse to produce, causes it to become loose, and positive/negative plate gap increases. More seriously, current Lithium-Ion Battery Core, at winding end, all uses gummed paper to close tail end, and gummed paper is bonded on barrier film. But barrier film is vesicular structure, deformation all can occurring in any direction, more obvious after infiltrating electrolytic solution, extraneous vibration aggravates this kind of deformation. Thus cause afterbody gummed paper to lose efficacy. Pole core now is just as the spring compressed removes pressure suddenly, and the pole core of winding can relax gradually, and battery performance is decayed. Fixing metal shell is closed by helpless for above-mentioned situation.
Summary of the invention
It is an object of the invention to: provide a kind of battery, it is achieved the accurate extruding of pole core, it is to increase the reliability that battery uses and stability.
For reaching this object, the present invention by the following technical solutions:
A kind of battery, comprises housing and is positioned at the pole core of described enclosure interior, and described pole core outer setting has the pole core squeezing device for being extruded by described pole core.
As the preferred technical scheme of one, described pole core squeezing device comprises extruding element and pressure control valve, described extruding element carries out directly contacting with described pole core and is extruded by described pole core, and described pressure control valve contacts with described extruding element the motion for controlling described extruding element.
As the preferred technical scheme of one, described extruding element is made by resilient material.
Employing resilient material makes, and the shape of described extruding element can carry out adaptations voluntarily according to the shape of pole core, it is possible to makes the pressure distribution acted on the core of pole more even.
Further, described extruding element can be flexible air-bag or cushion, and during work, described extruding element covers described pole core outer surface at least partly.
Further, described extruding element adopts soft TR thin rubber material or urethane material material to make.
As the preferred technical scheme of one, the substrate that described pressure control valve comprises with described pole core profile is mated mutually, described extruding element and described substrate one_to_one corresponding, and the fixed installation of described extruding element is on the substrate.
Preferably, substrate adopts at least one in polypropylene, polyethylene or PET to be made.
Concrete, when described pole core is cuboid shape structure time, described substrate can be one, and is arranged on the one side place of described pole core; Another side contacts with the inwall of described housing by relative two in the face of described pole core extrudes.
Preferably, described substrate can be two, is separately positioned on the relative two sides of described pole core, extrudes element by two and is extruded by described pole core simultaneously.
When described pole core is cylindrical, described substrate is arc substrate, the radian of described arc substrate is corresponding with the cylindrical outer surface of described pole core, described arc substrate can for covering the arc plate of described pole core half outside surface, described arc substrate is two symmetrical both sides being arranged on described pole core, and arc substrate described in two combines and can cover whole pole core outer surface and it extruded.
As the preferred technical scheme of one, described substrate is connected with for driving described substrate to carry out the push rod moved on the one side away from described pole core, and described push rod reaches described hull outside through described housing.
Preferably, described push rod and described substrate integrated injection molding.
Preferably, the quantity of described push rod is be provided with at least one described push rod on substrate described in every block, the quantity that every block substrate arranges push rod depend on substrate size and in extrusion process to the requirement of balance.
As the preferred technical scheme of one, the position of described push rod and described housing joint is provided with sealing element.
As the preferred technical scheme of one, described sealing element comprises the sealing element pedestal being connected with described housing, described sealing element pedestal is provided with the through hole that described push rod can be made to pass, described through hole is provided with sealing-ring, and described push rod is located in described sealing-ring and axially can slide along described through hole.
Preferably, described sealing element pedestal adopts insulating material to make.
As the preferred technical scheme of one, described push rod is provided with the push rod retaining element for fixing described push rod.
As the preferred technical scheme of one, described push rod retaining element is the elasticity knob being set on described push rod, described elasticity knob be outside surface for having externally threaded taper structure, described sealing element pedestal is provided with and the female thread structure that described elasticity knob shaped matches.
Elasticity knob is set to the threaded taper structure of tool, and in the process that knob screws in, sealing element pedestal constantly extrudes elasticity knob, makes elasticity knob inwall clamp described push rod gradually, is fixed the position of described push rod.
As the preferred technical scheme of one, described push rod is provided with the scale mark stretching into described enclosure interior length for demarcating described push rod.
Preferably, when elasticity knob screw by described push rod fixing, scale mark position on the push rod that the end of elasticity knob is demarcated can display base plate near the distance of the surface distance hull outside of pole core, when when arranging two groups of pole core squeezing devices of pole core zygomorphy, the thickness that the thickness in a pressing direction of described housing and the difference of both sides push rod scale sum subtract two extruding elements again is the thickness extruding rear pole core.
The present invention has following useful effect:
1, at the battery production initial stage, loosen pole core, ensure the abundant infiltration of electrolytic solution;
2, when initial charge, the gas that lithium ion battery produces, it is possible to by repeatedly extruding the position squeezed beyond the core of inside battery pole, the guarantee barrier film saturated imbibition of energy, and positive/negative plate fully contact with barrier film;
3, ensure the capacity of battery, reduce the internal resistance of battery;
4, battery swell is avoided;
5, between the battery usage period, ensure fitting tightly of the clamping of pole core and positive and negative electrode and barrier film, increase the reliability that battery uses, prolongation work-ing life.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is battery schematic diagram described in embodiment one.
Fig. 2 is inside battery structure vertical view described in embodiment one.
Fig. 3 is sealing element structural representation described in embodiment one.
Fig. 4 is Fig. 3 vertical view.
Fig. 5 is battery schematic diagram described in embodiment two.
Fig. 6 is inside battery structure vertical view described in embodiment two.
In Fig. 1 to 4:
100, housing; 101, pole core; 102, electrolytic solution; 103, element is extruded; 104, substrate; 105, push rod; 106, handle; 107, sealing element pedestal; 108, sealing-ring; 109, elasticity knob.
In Fig. 5,6:
200, housing; 201, pole core; 202, element is extruded; 203, substrate.
Embodiment
Below in conjunction with accompanying drawing and the technical scheme of the present invention is described further by embodiment.
Embodiment one:
As shown in figures 1-4, in the present embodiment, a kind of battery of the present invention, comprise housing 100 and it is positioned at the pole core 101 of housing 100 inside, housing 100 is rectangular drum like structure, and pole core 101 cross section is rectangular configuration, and the sidewall of the side corresponding housing 100 of pole core 101 is arranged, it is filled with electrolytic solution 102 in housing 100 inside, has the pole core squeezing device for being extruded by pole core 101 in pole core 101 outer setting.
Concrete, pole core squeezing device comprises the extruding element 103 being made up of resilient material and the pressure control valve for controlling to extrude the motion of element 103 that contacts with extruding element 103. Extruding element 103 is the flexible air-bag that one side is all corresponding with pole core 101 side shape and size, and described flexible air-bag adopts urethane material to make. In the present embodiment, extrude element 103 be two with pressure control valve, be separately positioned on that pole core 101 is parallel to each other one is to side place, the substrate 104 that pressure control valve comprises with extruding element 103 contacts, the rectangular structure of substrate 104, its physical dimension is mated mutually with corresponding pole core 101 side, extruding element 103 fixedly mounts on the substrate 104, together can move with substrate 104.
Being connected with for driving substrate 104 to carry out the push rod 105 moved on the one side of substrate 104 away from pole core 101, it is outside that push rod 105 reaches housing 100 through housing 100. The present embodiment is provided with two push rods 105 on every block substrate 104, and two push rods 105 are arranged in parallel, two push rod 105 one end are connected the other end with substrate 104, and to stretch out housing 100 outside and connected by handle 106, and the position that push rod 105 is connected with substrate 104 is provided with the muscle plate for firm push rod 105. Push rod 105, substrate 104 and muscle plate adopt polythene material to make, and pass through integrated injection molding.
Owing to push rod 105 reaches housing 100 outside through sidewall, in order to prevent the electrolytic solution of housing 100 inside from flowing out, the position contacted with housing 100 at push rod 105 is provided with sealing-ring 108. Concrete has a through hole in the position that housing 100 upper push-rod 105 passes, the sealing element pedestal 107 for installing sealing-ring 108 it is provided with in through hole, sealing element pedestal 107 is provided with the through hole that push rod 105 can be made to pass through, on sealing element pedestal 107 and be positioned at housing 100 and there is groove for holding sealing-ring 108 in the plane, sealing-ring 108 arranges in a groove, and push rod 105 is located in sealing-ring 108 and axially can slide along through hole.
The one end open being positioned at housing 100 outside at sealing element pedestal 107 is the taper structure increased gradually from inside to outside, corresponding with taper structural openings is provided with the elasticity knob 109 that outside surface is taper, taper open interior is provided with internal thread, the outside surface at elasticity knob 109 be provided with the outside screw corresponded make described elasticity knob 109 can precession, screw out taper opening. Being provided with through hole on elasticity knob 109, the internal diameter of through hole is slightly larger than the diameter of push rod 105 in a relaxed state. Screwing at elasticity knob 109 is constantly squeezed in the process of taper opening, and its internal diameter that deforms reduces gradually, can be extruded by push rod 105 after it contacts with push rod 105, it is achieved fixing to push rod 105.
Push rod 105 is provided with the scale mark that can reflect the distance of substrate 104 outside the surface distance housing 100 of pole core 101. Elasticity knob 109 has the end face that is perpendicular to push rod 105 axis, and when elasticity knob 109 screws, the graduated scale being positioned on push rod 105 corresponding to the end face of elasticity knob 109 is designated as the distance of substrate 104 outside the surface distance housing 100 of pole core 101.
Screw fixing for push rod 105 at elasticity knob 109, the scale mark position on push rod 105 that the end face of elasticity knob 109 is demarcated can the distance of display base plate 104 outside the surface distance housing 100 of pole core 101, when when arranging two groups of pole core squeezing devices of pole core 101 zygomorphy, the thickness that the thickness in a pressing direction of housing 100 and the difference of both sides push rod 105 scale sum subtract two extruding elements 103 again is the thickness extruding rear pole core 101.
After series of cells installs into, in weathering process, it is possible to be pulled outwardly by push rod 105, electrolytic solution is allowed fully to infiltrate pole core 101. Cross Cheng Qian at battery initial charge, push rod 105 is inwardly pushed away, and screw elasticity knob 109. This action can repeatedly, and to discharge unnecessary electrolytic solution 102, fully extruding pole core 101, makes positive and negative electrode fully contact, and reduces the internal resistance of cell. Battery initial charge can produce gas, therefore needs after charging again to be extruded by pole core 101, and this action repeatedly, can design numerical value until close.
Embodiment two:
Such as Fig. 5, shown in 6, the present embodiment is substantially identical with embodiment one content, its key distinction is the housing 200 of battery, the shape of substrate 203 and extruding element 202 is different, the present embodiment middle shell 200 is rounded cylindrical, pole core 201 corresponding with it is cylindrical-shaped structure, therefore the present embodiment all adopts arcuate structure in order to pole core 201 better carries out clamping extruding element 202 and substrate 203, the radian of the substrate 203 of arc is corresponding with the cylindrical outer surface of pole core 201, substrate 203 can for covering the arc plate of pole core 201 close to half outside surface, substrate 203 is two, the symmetrical both sides being arranged on pole core 201, two substrates 203 combines and can substantially cover whole pole core outer surface and it extruded.
It is to be understood that; above-mentioned embodiment is only better embodiment and institute's application technology principle of the present invention; in technical scope disclosed in this invention, the change that any those skilled in the art of being familiar with easily expect or replacement, all should be encompassed in protection scope of the present invention.

Claims (9)

1. a battery, it is characterized in that, comprise housing and it is positioned at the pole core of described enclosure interior, described pole core outer setting has the pole core squeezing device for being extruded by described pole core, described pole core squeezing device comprises extruding element and pressure control valve, described extruding element carries out directly contacting with described pole core and is extruded by described pole core, and described pressure control valve contacts with described extruding element the motion for controlling described extruding element.
2. battery according to claim 1, it is characterised in that, described extruding element is made by resilient material.
3. battery according to claim 2, it is characterised in that, the substrate that described pressure control valve comprises with described pole core profile is mated mutually, described extruding element and described substrate one_to_one corresponding, and the fixed installation of described extruding element is on the substrate.
4. battery according to claim 3, it is characterised in that, described substrate is connected with for driving described substrate to carry out the push rod moved on the one side away from described pole core, and described push rod reaches described hull outside through described housing.
5. battery according to claim 4, it is characterised in that, the position of described push rod and described housing joint is provided with sealing element.
6. battery according to claim 5, it is characterized in that, described sealing element comprises the sealing element pedestal being connected with described housing, described sealing element pedestal is provided with the through hole that described push rod can be made to pass, described through hole is provided with sealing-ring, and described push rod is located in described sealing-ring and axially can slide along described through hole.
7. battery according to claim 6, it is characterised in that, described push rod is provided with the push rod retaining element for fixing described push rod.
8. battery according to claim 7, it is characterized in that, described push rod retaining element is the elasticity knob being set on described push rod, described elasticity knob be outside surface for having externally threaded taper structure, described sealing element pedestal is provided with and the female thread structure that described elasticity knob shaped matches.
9. battery according to claim 8, it is characterised in that, described push rod is provided with the scale mark stretching into described enclosure interior length for demarcating described push rod.
CN201410265851.9A 2014-06-13 2014-06-13 A kind of battery Active CN104037448B (en)

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CN104037448B true CN104037448B (en) 2016-06-01

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106898822B (en) * 2017-05-05 2021-04-09 惠州亿纬集能有限公司 Lithium battery production process and lithium battery

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103647105A (en) * 2013-12-12 2014-03-19 奇瑞汽车股份有限公司 Power battery
CN203932224U (en) * 2014-06-13 2014-11-05 广东亿纬赛恩斯新能源系统有限公司 A kind of battery

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201311953Y (en) * 2008-11-27 2009-09-16 比亚迪股份有限公司 Lithium ion battery
CN102290557A (en) * 2011-07-19 2011-12-21 深圳邦凯新能源股份有限公司 Liquid injection process of lithium ion battery cell

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103647105A (en) * 2013-12-12 2014-03-19 奇瑞汽车股份有限公司 Power battery
CN203932224U (en) * 2014-06-13 2014-11-05 广东亿纬赛恩斯新能源系统有限公司 A kind of battery

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Effective date of registration: 20200424

Address after: 448000 No. 68, Jingnan Avenue, Duodao District, high tech Zone, Jingmen City, Hubei Province

Patentee after: Hubei EVE Power Co.,Ltd.

Address before: Seven road 516006 in Guangdong province Huizhou City Zhongkai high tech Zone Huifeng No. 36

Patentee before: GUANGZHOU EVE CENS NEW ENERGY SYSTEM Co.,Ltd.