CN201430168Y - Encapsulating shell for lithium-ion battery - Google Patents
Encapsulating shell for lithium-ion battery Download PDFInfo
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- CN201430168Y CN201430168Y CN2009200248779U CN200920024877U CN201430168Y CN 201430168 Y CN201430168 Y CN 201430168Y CN 2009200248779 U CN2009200248779 U CN 2009200248779U CN 200920024877 U CN200920024877 U CN 200920024877U CN 201430168 Y CN201430168 Y CN 201430168Y
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- battery
- encapsulating shell
- hollow tube
- shell
- ion battery
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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
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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
- 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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Abstract
The utility model relates to an encapsulating shell for a lithium-ion battery. A battery core is arranged in the shell; a hollow tube is arranged on the encapsulating shell; one end of the hollow tubeis arranged in the encapsulating shell and the other end is arranged outside the encapsulating shell; and the hollow tube is communicated with the outside for vacuumizing during the process of manufacturing the battery. The encapsulating shell can simplify the manufacturing process of the lithium-ion battery, does not need fluid injection equipment, moistening equipment and the like which are costly and poor in universality, and can prevent the electrolyte from eroding the battery shell and improves the performance of the battery.
Description
Technical field
The utility model relates to battery and makes the field, relates in particular to a kind of encapsulating shell of lithium ion battery.
Background technology
Lithium ion battery is since nineteen nineties succeeds in developing, because it has the energy height, have extended cycle life, operating voltage height, special advantages such as pollution-free, now be widely used in the electronic apparatuss such as mobile phone, digital camera, notebook computer, and progressively to electric bicycle, electric automobile, high-capacity dynamical lithium-ion battery applications such as stand-by power supply are expanded.If lithium ion battery can be divided into two kinds by the battery case packaged form, a kind of is the duricrust lithium ion battery, usually with box hat, aluminum hull and plastic housing packing; Another kind is a flexible packing lithium ion battery, usually with soft aluminum-plastic composite membrane packing.
In the lithium ion battery production process, moisture content can produce great destruction to the performance of battery, therefore battery will be carried out depth drying before battery liquid-filling, and will carry out under the condition of anhydrous and anaerobic when fluid injection, the original fluid injection of duricrust lithium ion battery, chemical synthesis technology are so as far as possible:
Fluid injection;
On the liquid injection hole rubberized fabric or high-absorbable filter paper and put cushion rubber with the sealing liquid injection hole;
Leave standstill with wetting;
Formation charging;
Steel ball seals;
Tear adhesive plaster;
Clean the vestige of residual electrolyte on the battery.
The present electrolyte filling method that adopts mainly is to keep the fluid injection aperture to carry out fluid injection on the battery cover of lithium ion battery or battery container, generally be earlier battery to be fixed on the priming device during fluid injection, insert inside battery with the liquid injection pipe that has sealing gasket by liquid injection hole then, in liquid injection pipe, inject electrolyte with the HighPower pump again, then battery and priming device being put into vacuum tank vacuumizes, allow the gas in the battery be drawn out of along liquid injection pipe, electrolyte enters in the battery simultaneously.Because the tiny bubble in the battery material slit can not discharge under the pressure of electrolyte fully, thereby causes the fluid injection difficulty, production efficiency is low, wetting effect is poor, be prone to the electrolyte ingress of air during fluid injection in addition, absorb airborne moisture content, thereby damage battery performance.
Because general fluid injection, leave standstill and change into environment and do not reach anhydrous requirement, in order to prevent that water in air part from can enter in the lithium ion battery, the negative effect that brings to battery, so lithium ion battery can not uncoveredly be placed in the air after the fluid injection, generally all on liquid injection hole, stick on a piece of adhesive tape or high-absorbable filter paper.
It is wetting to be about to begin behind the battery liquid-filling, its objective is electrolyte is uniformly distributed in pole piece and the barrier film, discharges the gas in the electrode material micropore, to improve the performance of battery.
Need special use and expensive fluid injection and wetting apparatus just can reach good fluid injection and wetting effect in the existing manufacture method.
After battery is wetting, when changing into first, lithium ion battery can form SEI film (SolidElectrolyte Interface) in negative terminal surface, and meeting produces a large amount of gases in the forming process of SEI film, and the gas that produces backs down the adhesive plaster or the high-absorbable filter paper of sealing easily, thereby make extraneous air enter into inside battery easily, every performance of badly damaged battery.
Electrolyte when changing on the other hand in the battery is easily along with the gas that produces overflows the corrosion cell shell from liquid injection hole.Hickie in order to prevent to stay after electrolyte from flowing out generally also will put a cyclic spring cushion rubber.Cushion rubber comprises when being set on the battery and the sidewall sections of battery contacts side surfaces, the upper part that contacts with battery cover, the end portion that contacts with battery bottom.This flexible rubber ring can be pressed on adhesive plaster or high-absorbable filter paper and seal liquid injection hole on the cell cover, prevents that electrolyte from spilling or moisture content enters.Have in order to prevent that further leakage or moisture content from entering, can on adhesive plaster, place square pad of a fritter and then cover cushion rubber, package the cushion rubber battery leave standstill wetting after, be placed on the charging cabinet and change into, take off cushion rubber after changing into end, seal, the adhesive plaster on the liquid injection hole of tearing then with steel ball, so still, might there be electrolyte to flow out on battery, to stay hickie, the work that also will clean or polish with alcohol, acetone etc. battery.Chinese patent 200720121914.9 has been invented a kind of cushion rubber that is used for the lithium ion battery manufacturing process, can reduce the cost of manufacture of battery production, improve the performance of battery, but this method still can not avoid battery material to touch airborne moisture content fully, electrolyte is possibility corrosion cell shell still, stays hickie.
The pernicious gas that produces when changing into is on the other hand understood some and is rested on inside battery, and this also can damage the performance of battery.02134461.2 pair of traditional manufacturing process of Chinese patent is improved, a kind of lithium ion battery opening malleation chemical synthesizing method is provided, but still can not avoid battery material to touch airborne moisture content fully, and exhaust is not thorough, so that influence the performance of battery.
Therefore make lithium ion battery with conventional method, there are the following problems: the one, and poor during fluid injection to environmental requirement height, battery liquid-filling difficulty, wetting effect; The 2nd, the gas that produces when changing into backs down the adhesive plaster that pastes on the liquid injection hole or high-absorbable filter paper etc. easily, makes extraneous air enter into inside battery, damages the performance of battery; The 3rd, the pernicious gas that produces when changing into is understood some and is rested on inside battery, damages the performance of battery; The 4th, easily along with the gas that produces overflows from liquid injection hole, the corrosion cell shell influences outward appearance to electrolyte when changing into, and needs to clean and polishing.
The utility model content
Technical problem to be solved in the utility model provides a kind of encapsulating shell of lithium ion battery, can make the manufacture process of lithium ion battery simpler, do not need equipment such as the low liquid-injection equipment of costliness and versatility, wetting apparatus, can prevent electrolyte corrosion cell shell, and improve battery performance.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of encapsulating shell of lithium ion battery, battery is housed in the shell, described encapsulating shell is provided with hollow tube, one end of described hollow tube places in the described encapsulating shell, the other end places outside the described encapsulating shell, and described hollow tube communicates with the external world.
Further, above-mentioned encapsulating shell also can have following characteristics, and described hollow tube places the outer opening part of encapsulating shell to be provided with Capsule.
Further, above-mentioned encapsulating shell also can have following characteristics, described encapsulating shell comprises the battery case and the battery case cover plate that is used for described battery case is sealed that is used to hold battery, and described hollow tube is arranged on the sidewall of described battery case, perhaps is arranged on the described battery case cover plate.
Further, above-mentioned encapsulating shell also can have following characteristics, and described encapsulating shell is provided with the electrode pole, and described hollow tube is arranged in the described electrode pole.
Further, above-mentioned encapsulating shell also can have following characteristics, and described hollow tube is the passage that is arranged in the described electrode pole.
Further, above-mentioned encapsulating shell also can have following characteristics, and described passage inboard is provided with screw thread.
Further, above-mentioned encapsulating shell also can have following characteristics, and the quantity of described hollow tube is at least one.
Further, above-mentioned encapsulating shell also can have following characteristics, and the material of described encapsulating shell is box hat or aluminum hull or plastic housing.
Use the encapsulating shell of the utility model lithium ion battery to make in the process of lithium ion battery, employed vaccum-pumping equipment adopts general vacuum pump or vacuum generator to realize, fluid injection adopts simple device to finish, wet processes after the fluid injection also need not special-purpose wetting apparatus and can realize evenly wetting, not only reduce equipment cost, the manufacturing process of battery is simple to operation, and the battery performance that makes is stable; When changing into and change into the back and battery is vacuumized to avoid effectively that thereby residual gas influences battery life or result of use in the battery.
Description of drawings
Fig. 1 is the structure chart of the encapsulating shell of a kind of lithium ion battery of providing of the utility model;
Fig. 2 is the structure chart of the encapsulating shell of the another kind of lithium ion battery that provides of the utility model;
Fig. 3 is to use the encapsulating shell of the utility model lithium ion battery to make the manufacture process schematic diagram of lithium ion battery.
In the accompanying drawing, the list of parts of each label representative is as follows:
1, battery case, 2, the battery case cover plate, 3, Positive Poles, 4, the negative pole pole, 5, hollow tube, 6, Capsule.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.
Fig. 1 is the structure chart of the encapsulating shell of a kind of lithium ion battery of providing of the utility model.As shown in Figure 1, the encapsulating shell of this lithium ion battery comprises the battery case 1 that is used to hold battery, the battery (not shown in figure 1) is housed in the battery case 1, be used for battery case cover plate 2 that battery case 1 is sealed, the Positive Poles 3 and the negative pole pole 4 of battery stretch out battery case cover plate 2, be arranged on the hollow tube 5 on the battery case cover plate 2, one end of hollow tube 5 places in the encapsulating shell, the other end places outside the encapsulating shell, hollow tube 5 communicates with the external world, and hollow tube 5 places the outer opening part of encapsulating shell to be provided with Capsule 6, after being used to vacuumize hollow tube 5 is sealed, prevent that ambient atmos etc. from entering, also replacement such as available triple valve of Capsule 6.In other embodiments, hollow tube places the outer part outside of encapsulating shell can be provided with screw thread, so that can be with the bolt that adapts with this screw thread with this hollow tube sealing after vacuumizing.
Fig. 2 is the structure chart of the encapsulating shell of the another kind of lithium ion battery that provides of the utility model.As shown in Figure 2, the encapsulating shell of this lithium ion battery comprises battery case 1 equally, battery (not shown among Fig. 2) is housed in the battery case 1, the Positive Poles 3 and the negative pole pole 4 of battery case cover plate 2, battery stretch out battery case cover plate 2, different with encapsulating shell shown in Figure 1 is, among Fig. 2, hollow tube 5 is arranged in the Positive Poles 3.Certainly, hollow tube 5 also can be arranged in the negative pole pole 4.Among Fig. 2, hollow tube 5 can be arranged on the passage on the positive and negative electrode pole.Further, this passage inboard can be provided with screw thread, so that use the screw that adapts with this screw thread with channel seal after vacuumizing.
Certainly, except that position illustrated in figures 1 and 2, in other embodiments, hollow tube can also be arranged on other positions of encapsulating shell, on the sidewall such as battery case.
Among each embodiment, the quantity of hollow tube is at least one, and the length of hollow tube and size can determine that encapsulating shell can be box hat or aluminum hull or plastic housing according to capacity, shape or the size of battery.
Fig. 3 is to use the encapsulating shell of the utility model lithium ion battery to make the manufacture process schematic diagram of lithium ion battery.As shown in Figure 3, use the manufacture method of the encapsulating shell manufacturing lithium ion battery of the utility model lithium ion battery may further comprise the steps:
Step 301, encapsulating shell is pre-sealed: battery is packed in the encapsulating shell, and hollow tube one end opening is placed in the encapsulating shell, other end opening places outside the encapsulating shell, and sealing communicates with the external world by hollow tube around the encapsulating shell;
In the pre-sealed process, encapsulating shell except that by hollow tube with the external world communicates, can also reserve explosion-proof valve.
Step 302, vacuumize: hollow tube is connected with the pump-line of vaccum-pumping equipment, encapsulating shell is vacuumized, when vacuum degree in the encapsulating shell reaches the lithium ion battery manufacture process requirement, seal hollow tube, disconnect being connected of pump-line of hollow tube and vacuum equipment, blended rubber cap or triple valve etc. seal hollow tube, making encapsulating shell interior is vacuum, and does not communicate with the external world;
Step 303, fluid injection: remove the Capsule of hollow tube or place the outer opening of encapsulating shell to open hollow tube by triple valve, and the hollow tube outer end opening is connected with the fluid injection pipeline of liquid-injection equipment, because in the encapsulating shell is vacuum, and liquid-injection equipment to be in the natural environment be under the atmospheric environment, therefore electrolyte can flow in the encapsulating shell by nature, this fluid injection mode is simple, required liquid-injection equipment is simple, after fluid injection finishes, with the hollow tube disconnection and by sealings such as Capsules, battery leave standstill carry out wetting, owing to is vacuum before the fluid injection in the encapsulating shell, so battery is wetting more even, need not special wetting apparatus;
Step 304 changes into: the both positive and negative polarity of the battery on the encapsulating shell is connected with the corresponding both positive and negative polarity of formation device, changes into battery;
Step 305, change into end after, repeating step 302 enters step 306 afterwards;
Step 306 with the hollow tube sealing, makes encapsulating shell seal fully, does not communicate with the external world; After the sealing, promptly make the battery finished product.
In other embodiments, can when changing into battery, vacuumize in the step that changes into, thereby can when changing into, gas newly-generated in gas residual in the battery and the formation process be discharged, realize changing under the vacuum state.Pressure was even when battery changed into, and the gas savings of effectively avoiding residual gas in the battery or changing into generation is in battery, thereby reached the effect that improves battery performance.
Use the encapsulating shell of the utility model lithium ion battery to make in the process of lithium ion battery, employed vaccum-pumping equipment adopts general vacuum pump or vacuum generator to realize; Fluid injection adopts simple device to finish, and the wet processes after the fluid injection also need not special-purpose wetting apparatus and can realize evenly wettingly, not only reduces equipment cost, and the manufacturing process of battery is simple to operation, and the battery performance that makes is stable; When changing into and change into the back and battery is vacuumized to avoid effectively that thereby residual gas influences battery life or result of use in the battery.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
1. the encapsulating shell of a lithium ion battery is equipped with battery in the shell, it is characterized in that, described encapsulating shell is provided with hollow tube, and an end of described hollow tube places in the described encapsulating shell, and the other end places outside the described encapsulating shell, and described hollow tube communicates with the external world.
2. encapsulating shell according to claim 1 is characterized in that, described hollow tube places the outer opening part of encapsulating shell to be provided with Capsule.
3. encapsulating shell according to claim 1, it is characterized in that, described encapsulating shell comprises the battery case and the battery case cover plate that is used for described battery case is sealed that is used to hold battery, and described hollow tube is arranged on the sidewall of described battery case, perhaps is arranged on the described battery case cover plate.
4. encapsulating shell according to claim 1 is characterized in that described encapsulating shell is provided with the electrode pole, and described hollow tube is arranged in the described electrode pole.
5. encapsulating shell according to claim 4 is characterized in that, described hollow tube is the passage that is arranged in the described electrode pole.
6. encapsulating shell according to claim 5 is characterized in that, described passage inboard is provided with screw thread.
7. according to each described encapsulating shell of claim 1 to 6, it is characterized in that the quantity of described hollow tube is at least one.
8. according to each described encapsulating shell of claim 1 to 6, it is characterized in that the material of described encapsulating shell is box hat or aluminum hull or plastic housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200248779U CN201430168Y (en) | 2009-05-14 | 2009-05-14 | Encapsulating shell for lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200248779U CN201430168Y (en) | 2009-05-14 | 2009-05-14 | Encapsulating shell for lithium-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201430168Y true CN201430168Y (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200248779U Expired - Fee Related CN201430168Y (en) | 2009-05-14 | 2009-05-14 | Encapsulating shell for lithium-ion battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105565A1 (en) * | 2009-03-17 | 2010-09-23 | 山东润峰集团新能源科技有限公司 | Method for manufacturing lithium ion battery and package bag of lithium ion battery |
| WO2010130220A1 (en) * | 2009-05-14 | 2010-11-18 | 山东润峰集团新能源科技有限公司 | Method for manufacturing lithium ion battery and encapsulating shell of lithium ion battery |
-
2009
- 2009-05-14 CN CN2009200248779U patent/CN201430168Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105565A1 (en) * | 2009-03-17 | 2010-09-23 | 山东润峰集团新能源科技有限公司 | Method for manufacturing lithium ion battery and package bag of lithium ion battery |
| WO2010130220A1 (en) * | 2009-05-14 | 2010-11-18 | 山东润峰集团新能源科技有限公司 | Method for manufacturing lithium ion battery and encapsulating shell of lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XIANGYANG JINXIANG OPTOELECTRONIC TECHNOLOGY CO., Free format text: FORMER OWNER: LIN DAOYONG Effective date: 20130710 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 102208 CHANGPING, BEIJING TO: 441111 XIANGFAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130710 Address after: Song road 441111 Xiangfan city to Hubei Province Economic Development Zone of Yicheng City Patentee after: Xiangyang Jinxiang Photoelectric Technology Co., Ltd. Patentee after: Shandong Realforce Group New Energy Science and Technology Co., Ltd. Address before: 102208 Beijing Huilongguan Changping District harmonious home 1-25-6-401 Patentee before: Lin Daoyong Patentee before: Shandong Realforce Group New Energy Science and Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20150514 |
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| EXPY | Termination of patent right or utility model |