CN104505532A - Laminated power type lithium ion battery and assembling method thereof - Google Patents
Laminated power type lithium ion battery and assembling method thereof Download PDFInfo
- Publication number
- CN104505532A CN104505532A CN201410839951.8A CN201410839951A CN104505532A CN 104505532 A CN104505532 A CN 104505532A CN 201410839951 A CN201410839951 A CN 201410839951A CN 104505532 A CN104505532 A CN 104505532A
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- China
- Prior art keywords
- pole
- cover plate
- lithium ion
- pole group
- ion battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a laminated power type lithium ion battery which comprises a cuboid-shaped metal shell of which the upper part is open, a metal cover plate, a positive pole, a negative pole and a laminated pole group, wherein the metal cover plate is fixedly arranged at the opening of the shell; the positive pole and the negative pole are fixedly arranged on the cover plate and are insulated from the cover plate; the laminated pole group is arranged inside the shell; the positive tab and negative tab of the pole group are respectively connected with the positive pole and the negative pole by virtue of connecting plates; a lower base plate is arranged between the lower part of the pole group and the bottom wall in the shell; and a split type upper isolation pad is arranged between the upper part of the pole group and the cover plate. The laminated power type lithium ion battery disclosed by the invention is high in sealing property, high in safety, simple in structural components and light in weight, and the specific capacity of the battery is improved. A battery cell with high energy and severe overcurrent condition can be met, the laminated pole group can be used after the structure is adopted, the overcurrent area is increased, and the overcurrent bottleneck is avoided.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly relate to a kind of stacked power-type lithium ion battery and assembly method thereof.
Background technology
At present, the automobile pollution of China is rising year by year, and environmental pollution is day by day serious.Energy aspect, the non-renewable energy resources such as oil reduce rapidly, and according to statistics, existing explored oil only can re-use about 50 years, and all mankind are badly in need of the development of new energy.Lithium ion battery arises at the historic moment, and it has, and energy comparison is high, fail safe good, abundant raw materials, the superiority such as pollution-free.So extensive use in electronics.
But have following several respects problem in use at lithium-ion-power cell: 1) electrokinetic cell needs to drive high power motor with big current, but the internal resistance of power-type lithium ion battery is comparatively large, cause heating serious, output voltage is lower.2) motive-power battery energy is higher, thus manufacturability can be more complicated, and the cost ratio of structural elements significantly can rise, affect the commercialization of electrokinetic cell.3) owing to being on-vehicle battery, so need higher fail safe.
Summary of the invention
The object of the invention is the technological deficiency for existing in prior art, and stacked power-type lithium ion battery and assembly method thereof are provided.
The technical scheme adopted for realizing object of the present invention is:
A kind of stacked power-type lithium ion battery, comprise the cuboid metal shell of upper opening, be fixedly installed on the metal cover board at described shell aperture place, to be fixedly installed on described cover plate and to keep the positive pole that insulate and negative pole with described cover plate, and be arranged on the stacked pole group of described enclosure, the anode ear of described pole group is connected with positive pole and negative pole respectively by connecting plate with negative electrode lug, in described group bottom, pole and shell, be provided with lower bolster between diapire, be provided with between described group top, pole and cover plate split type on isolating pad.
Described split type upper isolating pad comprises two symmetrical sub-isolating pad, described sub-isolating pad comprises outer panel, be wholely set at described outer panel two ends and the side shield bent inwards, to be arranged between two side shields and spaced two Internal baffles, bottom between adjacent side shield and Internal baffle is provided with base plate, described base plate is provided with liquid-leaking nozzle and inner side is formed with breach.
Be provided with middle horizontal stiffener between two Internal baffles, the cover plate that middle horizontal stiffener is corresponding is provided with explosionproof hole, in described explosionproof hole, welding is provided with explosion-proof ball.
Be provided with the resistance wire of both conductings between described positive pole and shell.
Described just very copper material, described negative pole is albronze, and described shell is aluminium material, and described cover plate is aluminium material.
Described anode ear or negative electrode lug respectively with connecting plate laser welding, be also provided with baffle at weld.
An assembly method for lithium ion battery, is characterized in that, comprises the following steps,
1) utilize ultrasonic bond to weld with brace respectively the lug of stacked pole group, on lug, add that boundary belt together welds simultaneously;
2) the pole lower end Laser Welding of the pole group with battery cover board of having welded brace is welded;
3) the pole group after welding is carried out lug shaping, then pole group and lug is carried out encapsulate band,
4) be then stuck between battery cover board and pole group by split type upper isolating pad, pole group and cover plate insulate by the upper isolating pad after clamping,
5) together load shell together with lower gasket and pole group, finally carry out periphery welding.
Compared with prior art, the invention has the beneficial effects as follows:
Good airproof performance of the present invention, fail safe are higher, and structural member is comparatively simple, lighter in weight, the specific capacity of battery of improving.Can energy be met higher, the cell that overcurrent condition is heavier, stacked pole group after adopting this structure, can be used, and have employed Copper-Aluminum compound technology, use large area syndeton, pole adopts overall structure, overcomes the design of originally being riveted by rivet and battery external polar plate simultaneously, increase area of passage, avoid overcurrent bottleneck, and by laser welding, connect better, significantly can reduce internal resistance, thus allow to pass through larger current.This structural design is simple, and component structural can drop to comparatively low price, thus drags down the price of every watt-hour.
Accompanying drawing explanation
Figure 1 shows that the structural representation of metal cover board;
Figure 2 shows that the structural representation of isolating pad;
Figure 3 shows that isolating pad in metal cover board and half assemble after structural representation;
Figure 4 shows that metal cover board and upper isolating pad assemble after structural representation;
Figure 5 shows that the assembling state structural representation of lithium ion battery.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As Figure 1-5, stacked power-type lithium ion battery of the present invention comprises the cuboid metal shell 1 of upper opening, be fixedly installed on the metal cover board 2 at described shell aperture place, to be fixedly installed on described cover plate and to keep the positive pole 21 that insulate and negative pole 22 with described cover plate, and be arranged on the stacked pole group of described enclosure, the anode ear of described pole group is connected with positive pole and negative pole respectively by connecting plate with negative electrode lug, lower bolster is provided with between diapire in described group bottom, pole and shell, be provided with between described group top, pole and cover plate split type on isolating pad.Wherein, described positive pole and negative pole are square column structure, then its lower end is respectively platy structure to be connected with lug, effectively can increase area of passage like this.
Wherein, the positive pole of cover plate uses resistance wire that cover plate is communicated with positive pole, thus the shell voltage of unified battery, there is following advantage 1 like this, improve battery with two side terminals, 2, housing easily corrodes under comparatively electronegative potential, improves shell voltage so be connected with positive pole, prevents corrosion, if adding resistance wire is due to shell and cathode contact, short circuit can not be caused.
Specifically, positive pole is made up of fine aluminium, and negative pole is formed by Copper-Aluminum compound, and namely first copper coin and aluminium sheet produce rolling embryo by Explosion composite method, then pass through rolling.Positive pole and negative pole (below by positive pole and negative pole referred to as pole) insulate with pottery respectively and between cover plate, and utilize buckle to be fixed, namely buckle is enclosed within pole, fix by realizing pole to pole column riveting again, sealing between pole and cover plate adopts fluorubber, because pole group understands some space in enclosure interior, can cause colliding up and down, upper isolating pad is in order to fill these spaces, lower gasket is the platy structure that 0.25mm is thick, material is PP, while namely up and down interrupter plays location, also plays object pole group and shell and cover plate insulated.
Good airproof performance of the present invention, fail safe are higher, and structural member is comparatively simple, lighter in weight, the specific capacity of battery of improving.Can energy be met higher, the cell that overcurrent condition is heavier, stacked pole group after adopting this structure, can be used, and have employed Copper-Aluminum compound technology, use large area syndeton, pole adopts overall structure, overcomes the design of originally being riveted by rivet and battery external polar plate simultaneously, increase area of passage, avoid overcurrent bottleneck, and by laser welding, connect better, significantly can reduce internal resistance, thus allow to pass through larger current.This structural design is simple, and component structural can drop to comparatively low price, thus drags down the price of every watt-hour.
Specifically, described split type upper isolating pad comprises two symmetrical sub-isolating pad 3, described sub-isolating pad comprises outer panel 31, be wholely set at described outer panel two ends and the side shield 32 bent inwards, to be arranged between two side shields and spaced two Internal baffles 33, bottom between adjacent side shield and Internal baffle is provided with base plate 34, described base plate is provided with liquid-leaking nozzle to enter to allow battery fluid, the inner side of base plate is formed with breach simultaneously, adopt the design of breach, when forming the passage running lug and pass after two upper isolating pad docking.Be provided with middle horizontal stiffener 35 between two Internal baffles, the cover plate that middle horizontal stiffener is corresponding is provided with explosionproof hole 23, in described explosionproof hole, welding is provided with explosion-proof ball.For the battery of different positive electrode, limit different opening pressures.The liquid injection hole of this kind of battery cover board became many greatly more in the past, so seal form pounds ball change welding into, the sealing of welded seal can comparatively weld promote many.
Namely, can be fixedly connected with cover plate lower surface after two symmetrical sub-isolating pad fasten, wherein, described cover plate lower surface is provided with the step corresponding with side shield wall thickness to described outer panel, the region of cover plate bottom is divided into three parts by the sub-isolating pad after fastening, both sides are corresponding with positive pole and negative pole respectively, and breach forms the opening that the connecting plate described in a permission passes, simultaneously, the cavity that base plate, side shield, middle baffle plate and cover plate are formed also can by accommodated therein for the kink of connecting plate, corresponding to the region at middle part and explosion-proof valve.Subregion is arranged, and effectively can improve the location to connecting plate, simultaneously by pole group effective location.
When specifically assembling, the lug of pole group and brace, after stacked pole group completes, utilize ultrasonic bond to weld by battery, due in order to make the internal resistance after welding reach standard, so welding energy needs to be transferred to high value.In order to not make paper tinsel lug be shattered, so need to add that on lug boundary belt together welds, boundary belt is copper sheet or aluminium flake.Heighten welding energy value and can ensure that welding fully, and the situation of not welding can not occur.The pole group of having welded brace needs to weld with the pole bottom crown Laser Welding of battery cover board.Pole group after welding is carried out lug shaping, then pole group and lug are carried out encapsulate band, then split type upper isolating pad is stuck between battery cover board and pole group, for ease of by isolating pad clamping in separate type, corresponding boss also can be set with groove so that clamping is connected in its side shield end, upper isolating pad after clamping plays the insulating effect making pole group and cover plate, then together enters shell together with lower gasket and pole group, carries out periphery welding.
Confirmation pole group there is no short circuit and test Lou no problem after carry out fluid injection process, then laser welding is utilized to weld with battery cover board explosion-proof ball, shell ratio is entered what control pole group well, the setting of welding energy, when the symmetry of lug, use this structure external member, internal resistance reduces by 20%, caloric value reduces, and efficiency can be improved about 20%.Because structure can improve the inner space of battery for this reason, increase capacity, under the space of limited cover plate, increase area of passage, improve conveyance capacity, use welded seal than good seal really up to the mark.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a stacked power-type lithium ion battery, it is characterized in that, comprise the cuboid metal shell of upper opening, be fixedly installed on the metal cover board at described shell aperture place, to be fixedly installed on described cover plate and to keep the positive pole that insulate and negative pole with described cover plate, and be arranged on the stacked pole group of described enclosure, the anode ear of described pole group is connected with positive pole and negative pole respectively by connecting plate with negative electrode lug, lower bolster is provided with between diapire in described group bottom, pole and shell, be provided with between described group top, pole and cover plate split type on isolating pad.
2. power-type lithium ion battery as stacked in claim 1, it is characterized in that, described split type upper isolating pad comprises two symmetrical sub-isolating pad, described sub-isolating pad comprises outer panel, be wholely set at described outer panel two ends and the side shield bent inwards, to be arranged between two side shields and spaced two Internal baffles, the bottom between adjacent side shield and Internal baffle is provided with base plate, described base plate is provided with liquid-leaking nozzle and inner side is formed with breach.
3. power-type lithium ion battery as stacked in claim 2, is characterized in that, is provided with middle horizontal stiffener between two Internal baffles, and the cover plate that middle horizontal stiffener is corresponding is provided with explosionproof hole, and in described explosionproof hole, welding is provided with explosion-proof ball.
4. power-type lithium ion battery as stacked in claim 1, is characterized in that, is provided with the resistance wire of both conductings between described positive pole and shell.
5. power-type lithium ion battery as stacked in claim 1, is characterized in that, described just very copper material, and described negative pole is albronze, and described shell is aluminium material, and described cover plate is aluminium material.
6. power-type lithium ion battery as stacked in claim 1, is characterized in that, described anode ear or negative electrode lug respectively with connecting plate laser welding, be also provided with baffle at weld.
7. an assembly method for the lithium ion battery as described in any one of claim 1-6, is characterized in that, comprises the following steps,
1) utilize ultrasonic bond to weld with brace respectively the lug of stacked pole group, on lug, add that boundary belt together welds simultaneously;
2) the pole lower end Laser Welding of the pole group with battery cover board of having welded brace is welded;
3) the pole group after welding is carried out lug shaping, then pole group and lug is carried out encapsulate band,
4) be then stuck between battery cover board and pole group by split type upper isolating pad, pole group and cover plate insulate by the upper isolating pad after clamping,
5) together load shell together with lower gasket and pole group, finally carry out periphery welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839951.8A CN104505532A (en) | 2014-12-30 | 2014-12-30 | Laminated power type lithium ion battery and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839951.8A CN104505532A (en) | 2014-12-30 | 2014-12-30 | Laminated power type lithium ion battery and assembling method thereof |
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| Publication Number | Publication Date |
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| CN104505532A true CN104505532A (en) | 2015-04-08 |
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| CN201410839951.8A Pending CN104505532A (en) | 2014-12-30 | 2014-12-30 | Laminated power type lithium ion battery and assembling method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390741A (en) * | 2015-12-11 | 2016-03-09 | 天津中聚新能源科技有限公司 | Bracket assembly, lithium-ion battery and assembly method of lithium-ion battery |
| CN106549184A (en) * | 2016-12-22 | 2017-03-29 | 中科泰能高铭科技发展有限公司 | A kind of rectangular cell and manufacture method of New type of current conducting structure |
| CN109546018A (en) * | 2018-11-27 | 2019-03-29 | 欣旺达电子股份有限公司 | Battery cap and the power battery for using the battery cap |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727978Y (en) * | 2004-09-08 | 2005-09-21 | 东莞新能源电子科技有限公司 | A safety lithium ion battery |
| CN201877491U (en) * | 2010-11-23 | 2011-06-22 | 天津力神电池股份有限公司 | Novel high-capacity lithium ion battery |
| CN102347512A (en) * | 2011-09-27 | 2012-02-08 | 力神迈尔斯动力电池系统有限公司 | Large-capacity lithium ion battery |
| CN202454614U (en) * | 2011-12-08 | 2012-09-26 | 力神迈尔斯动力电池系统有限公司 | Internal insulating upper gasket structure of lithium-ion power battery |
| WO2013001821A1 (en) * | 2011-06-28 | 2013-01-03 | 日本ケミコン株式会社 | Electricity storage device and method for manufacturing electricity storage device |
| CN103401015A (en) * | 2013-07-26 | 2013-11-20 | 深圳市优特利电源有限公司 | Lithium-ion secondary battery and manufacturing method thereof |
-
2014
- 2014-12-30 CN CN201410839951.8A patent/CN104505532A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727978Y (en) * | 2004-09-08 | 2005-09-21 | 东莞新能源电子科技有限公司 | A safety lithium ion battery |
| CN201877491U (en) * | 2010-11-23 | 2011-06-22 | 天津力神电池股份有限公司 | Novel high-capacity lithium ion battery |
| WO2013001821A1 (en) * | 2011-06-28 | 2013-01-03 | 日本ケミコン株式会社 | Electricity storage device and method for manufacturing electricity storage device |
| CN102347512A (en) * | 2011-09-27 | 2012-02-08 | 力神迈尔斯动力电池系统有限公司 | Large-capacity lithium ion battery |
| CN202454614U (en) * | 2011-12-08 | 2012-09-26 | 力神迈尔斯动力电池系统有限公司 | Internal insulating upper gasket structure of lithium-ion power battery |
| CN103401015A (en) * | 2013-07-26 | 2013-11-20 | 深圳市优特利电源有限公司 | Lithium-ion secondary battery and manufacturing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390741A (en) * | 2015-12-11 | 2016-03-09 | 天津中聚新能源科技有限公司 | Bracket assembly, lithium-ion battery and assembly method of lithium-ion battery |
| CN105390741B (en) * | 2015-12-11 | 2018-01-05 | 天津中聚新能源科技有限公司 | Bracket component, lithium ion battery, the assembly method of lithium ion battery |
| CN106549184A (en) * | 2016-12-22 | 2017-03-29 | 中科泰能高铭科技发展有限公司 | A kind of rectangular cell and manufacture method of New type of current conducting structure |
| CN106549184B (en) * | 2016-12-22 | 2024-02-27 | 中科泰能高铭科技发展有限公司 | Square battery with novel current conducting structure and manufacturing method |
| CN109546018A (en) * | 2018-11-27 | 2019-03-29 | 欣旺达电子股份有限公司 | Battery cap and the power battery for using the battery cap |
| CN109546018B (en) * | 2018-11-27 | 2021-09-17 | 欣旺达电子股份有限公司 | Battery top cover and power battery using same |
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Application publication date: 20150408 |
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| RJ01 | Rejection of invention patent application after publication |