CN201725823U - Multifunctional battery shell explosion-proof device with integrated cover plate - Google Patents
Multifunctional battery shell explosion-proof device with integrated cover plate Download PDFInfo
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- CN201725823U CN201725823U CN201020188370XU CN201020188370U CN201725823U CN 201725823 U CN201725823 U CN 201725823U CN 201020188370X U CN201020188370X U CN 201020188370XU CN 201020188370 U CN201020188370 U CN 201020188370U CN 201725823 U CN201725823 U CN 201725823U
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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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Abstract
The utility model discloses a multifunctional battery shell explosion-proof device with an integrated cover plate. The device mainly comprises a battery shell cover, an explosion-proof sealing nut, a sealing screw, an explosion-proof film and an elastic sealing ring, wherein the explosion-proof sealing nut is arranged at the upper part or the lower part of the battery shell cover, the explosion-proof sealing nut and the battery shell cover are integrally formed in one step, a pressure release hole is formed at the bottom of the explosion-proof sealing nut and communicated with the interior of a battery shell, the elastic sealing ring is arranged at the upper part of the pressure release hole, and the sealing screw is screwed into the explosion-proof sealing nut to tightly press the elastic sealing ring. The utility model has the advantages that the explosion-proof sealing nut and the cover plate are integrally formed, so as to achieve simple industrialized manufacturing technique; the explosion-proof film can be replaced for many times after being exploded, so as to achieve safe use; and the explosion-proof sealing nut serves as a channel for discharging water, organic solvents and other purities out of a battery in the battery baking and drying processes prior to the sealing process, as well as a channel for the vacuuming of the interior of the battery shell, enables the injection of inert gases, electrolytes and additives to be filled into the battery shell, and guarantees the repair of pole pieces, so as to achieve multifunctional use effects.
Description
Technical field
The utility model relates to the explosion-protection equipment of battery container, the multi-functional battery shell of particularly a kind of integrated cover plate explosion-protection equipment.
Background technology
The low economic develop rapidly of carbonization in the whole world, the new forms of energy industry presents comprehensive expansion to be advanced, and it has been people's common recognition that electric automobile substitutes traditional fuel-engined vehicle.As everyone knows, the core technology of electric automobile is to drive the energy source and power battery of automobile.People's concern and serious hope electrokinetic cell are as the drive source popularization and application early of electric automobile.Find in the charging, discharge process of battery in practice or other reason, all might make generation side reaction such as active material in the battery case, electrolyte, barrier film and generate gas, cause the air pressure of inside battery to increase suddenly, even the battery explosion accident can take place.So each battery case all must be provided with the safe initiation pressure apparatus of regulation numerical value, guarantee that the use of battery product does not have danger, satisfy people's various demands.
The explosion-protection equipment of battery case, as Chinese patent Granted publication CN201387896Y, name is called " a kind of explosion-proof hermetic lithium battery housing " disclosed technical scheme of utility model patent, under battery, be covered with explosion-proof relief mechanism, explosion-proof relief mechanism comprises an annular explosion-proof relief groove and explosion proof node, and explosion proof node is positioned at the bottom of explosion-proof relief groove and is convex shape.The shortcoming of above-mentioned battery case explosion-protection equipment is: annular explosion-proof relief groove and explosion proof node and battery container integrated punching form, and battery container is charged as positive pole or negative pole.General stainless steel material as the lithium battery housing the thinnest about 0.3mm, realize the thickness 0.04--0.1mm of explosion proof node by the deformation of material in punching course.But in the actual production, along with increasing of stamping parts quantity, the wearing and tearing of mould, the thickness of explosion proof node is wanted be controlled at tens microns of homogeneous, will realize with the mould of precision more than micron order at least.In the course of processing, if material production be full of cracks, creep etc., all can influence the intensity of battery case, the scope of application of limit battery, may there be seepage in battery, influences the sealing of battery, thereby influences the performance, useful life etc. of battery.In addition, the explosion proof node thickness of equal area structure is the Initiation Pressure of 0.04mm, with explosion proof node thickness be the Initiation Pressure of 0.10mm, pressure can differ tens kg/cm
2, not reaching batch battery Initiation Pressure than the objective requirement in the close limit, the consistency of battery is not just being accomplished aspect this numerical value of Initiation Pressure.Above-mentioned explosion-protection equipment can only use once, can not use repeatedly, and influenced by mould during the explosion-protection equipment punching press, and the thickness of annular explosion-proof relief groove and explosion proof node and difficult quality control influence the performance of battery anti-explosion; The cell housing is charged, influences the insulation property of assembled battery group.
Summary of the invention
The purpose of this utility model is at above-mentioned shortcoming, develop the multi-functional battery shell of a kind of integrated cover plate explosion-protection equipment, explosive-proof sealed nut and cover plate are one-body molded, the sealing screw rod that has rupture pressure disc is torqued in the explosive-proof sealed nut seals, also can embed in the explosive-proof sealed nut welded seal.The shape of rupture pressure disc, thickness can science design, if can repeatedly change after the rupture pressure disc explosion, safe in utilization.Explosive-proof sealed nut can be used as before sealing in battery case and to inject electrolyte and additive, the multi-functional results of use such as passage that vacuumize in the battery case.
Rationale of the present utility model is: explosive-proof sealed nut and cover plate are one-body molded, having solved existing explosive-proof sealed nut needs secondary to be connected with cover plate, comprise the problem that modes such as welding or screw threads for fastening exist, stopped factor because of restriction product percents of pass such as explosive-proof sealed nut cooperates with the size of cover plate, machining accuracies, the secondary ease of connection produces the quality shortcoming, even causes bad products such as battery leakage, qualification rate be low.Explosive-proof sealed nut of the utility model and cover plate are one-body molded, and the industrialization manufacture craft is simple, and cost is low, steady quality.Particularly the explosive-proof sealed nut of the utility model can be realized multi-functional:
1, at battery baking drying process, as the passage of getting rid of impurity such as moisture, organic solvent in the battery;
2, inside battery is vacuumized or add inert gas;
3, inject electrolyte and additive to inside battery;
4, battery is produced the eliminating of gas in processes such as changing into and discharge and recharge, shelve;
5, battery pole piece is carried out repair process;
6, to the sealing and the venting of dust explosion of battery.
By the operation of above-mentioned operation, reach before battery seals completely, with the impurity emptyings such as gas in the battery, make to be implemented in the environment that does not have impurity in the battery cavity and work, reach premium properties such as best capacity, useful life.The more important thing is: the different process stage in that battery is made, in battery, add additive, increase the capacity of battery; Increase the multiplying power discharging property of battery; Increase the life-span of battery; Increase the stability and the fail safe of battery; According to the environment for use temperature of battery, improve the high temperature performance of battery; In groups in the process, the cell that parameter differs greatly is revised, and the homogeneous performance of battery pack is improved at battery.
The utility model can be realized the diversity in the battery assembly process, can design the product of customer satisfaction according to the requirement of client to battery performance, mainly distinguishes with two kinds of application forms: the one, and the static battery that uses, the 2nd, the dynamic battery that uses.When using battery, after the operation of finishing the battery process regulation, the sealing screw rod that has rupture pressure disc can be torqued in the explosive-proof sealed nut and seal for static state; For the dynamic down battery of work, the sealing screw rod that has rupture pressure disc can be torqued into and seal in the explosive-proof sealed nut, fixing at explosive-proof sealed nut with the place of the screwing welding of sealing screw rod, also explosive-proof sealed nut and screwing of sealing screw rod can be located hermetically sealed welding.The material of rupture pressure disc, shape, thickness can be according to the concrete numerical value of battery structure, Initiation Pressure, the design of science.Rupture pressure disc can repeatedly be changed in battery making and use, and is safe in utilization.
Explosive-proof sealed nut can be used as before sealing: at battery baking drying process, as the passage of getting rid of impurity such as moisture, organic solvent in the battery; In battery case, inject electrolyte and additive; Vacuumize, add inert gas in battery case, the passage of reparation battery pole piece etc. reaches multi-functional result of use.
The purpose of this utility model is achieved in that
The multi-functional battery shell of integrated cover plate explosion-protection equipment mainly comprises: battery cap, explosive-proof sealed nut, sealing screw rod, rupture pressure disc and elastic seal ring.The top of battery cap or bottom are provided with explosive-proof sealed nut, and explosive-proof sealed nut and battery cap adopt metal or the one-shot forming of non-metallic material package integral.If desired, can be provided with electrode mounting hole, in the top or the bottom installing electrodes of battery cap in the appropriate location of battery cap.Explosive-proof sealed nut is that an inwall is cylindrical, and the neighboring is circular or polygon-shaped cylinder, is provided with internal thread at the inwall of explosive-proof sealed nut.Explosive-proof sealed nut bottom is provided with relief hole, relief hole and battery case internal communication.The diameter of relief hole is less than the internal diameter of explosive-proof sealed nut.The top of relief hole is provided with elastic seal ring.The internal diameter of elastic seal ring is identical with the internal diameter of relief hole, and the external diameter of elastic seal ring is identical with the internal diameter of explosive-proof sealed nut.Sealing screw rod periphery is cylindrical, and sealing screw rod external diameter is provided with external screw thread.The external screw thread of sealing screw rod and the internal thread of explosive-proof sealed nut adapt.Sealing screw rod center is provided with relief tube, and relief tube can be circle or inner polygon.The lower surface of sealing screw rod is provided with rupture pressure disc.The material of rupture pressure disc, shape, thickness can carry out the design of science according to kind, the specification of battery, to reach purpose accurate, safety anti-explosive.If can repeatedly change after the rupture pressure disc explosion.Explosive-proof sealed nut is before installing, tightening sealing, and the relief hole in the explosive-proof sealed nut can be used as: the passage of getting rid of impurity such as moisture, organic solvent in the battery; Inert gas injecting, electrolyte and additive in battery case; In battery case, vacuumize, repair the multi-functional purposes of pole piece or the like.The sealing screw rod that the lower surface is provided with rupture pressure disc is torqued into explosive-proof sealed nut, compresses elastic seal ring.
Explosive-proof sealed nut of the utility model and cover plate are one-body molded, and the industrialization manufacture craft is simple, and cost is low, steady quality.Can repeatedly change after the rupture pressure disc explosion, safe in utilization, economize on resources, the protection environment has overcome common battery case because of the damaged shortcoming of discarding of explosion-protection equipment.The explosive-proof sealed nut of the utility model can be used as before sealing at battery baking drying process, as the passage of getting rid of impurity such as moisture, organic solvent in the battery; Inert gas injecting, electrolyte and additive in battery case; The passage that vacuumizes in the battery case is repaired pole piece, reaches multi-functional result of use.
Description of drawings
Fig. 1 is that the master of the utility model sealing screw rod looks cross-sectional view;
Fig. 2 is the main TV structure schematic diagram of the utility model rupture pressure disc;
Fig. 3 is that the master of the utility model elastic seal ring looks cross-sectional view;
Fig. 4 is that the integrated master in top that the explosive-proof sealed nut of the utility model is arranged on the battery cap looks cross-sectional view;
Fig. 5 is that the master of the utility model embodiment 1 looks cross-sectional view;
Fig. 6 is that the master of the utility model embodiment 2 looks cross-sectional view.
Among the figure: 1, battery cap, 2, explosive-proof sealed nut, 3, internal thread, 4, relief hole, 5, electrode mounting hole, 6, the sealing screw rod, 7, external screw thread, 9, relief tube, 10, rupture pressure disc, 11, elastic seal ring.
Embodiment
In conjunction with the accompanying drawings and embodiments, describe structure of the present utility model in detail.
Embodiment 1: the iron lithium dynamical battery of electric automobile
To shown in Figure 5, the top of battery cap 1 is provided with explosive-proof sealed nut 2 as Fig. 1, and explosive-proof sealed nut 2 adopts the integrated manufacturing of aluminum alloy materials to form with battery case loam cake 1.The multi-functional battery shell of integrated cover plate explosion-protection equipment comprises: battery cap 1, explosive-proof sealed nut 2, sealing screw rod 6, rupture pressure disc 10 and elastic seal ring 11.The right and left of battery cap 1 respectively is provided with 1 electrode mounting hole 5.Explosive-proof sealed nut 2 is that inwall is cylindrical, the neighboring is foursquare cylinder, is provided with internal thread 3 at the inwall of explosive-proof sealed nut 2.The relief hole 4 and the battery case internal communication of explosive-proof sealed nut 2 bottoms.The diameter of relief hole 4 is less than the internal diameter of explosive-proof sealed nut 2.The top of relief hole 4 is provided with elastic seal ring 11.The internal diameter of elastic seal ring 11 is identical with the internal diameter of relief hole 4, and the external diameter of elastic seal ring 11 is identical with the internal diameter of sealing nut 2.Sealing screw rod 6 peripheries are cylindrical, and sealing screw rod 6 centers are provided with relief tube 9, and relief tube 9 is cylindrical.The periphery of sealing screw rod 6 is provided with external screw thread 7.The external screw thread 7 of sealing screw rod 6 adapts with the internal thread 3 of explosive-proof sealed nut 2.The lower surface of sealing screw rod 6 is provided with rupture pressure disc 10.Rupture pressure disc 10 is thin slices of the circle made of aluminum.The shape of the cross section of rupture pressure disc 10 is the spill of circular arc.The sealing screw rod 6 that the lower surface is provided with rupture pressure disc 10 is torqued into explosive-proof sealed nut 2, compresses elastic seal ring 11.
Embodiment 2: the electric automobile iron lithium dynamical battery of embedded explosion-protection equipment
The bottom of the battery cap 1 of the electric automobile iron lithium dynamical battery of embedded explosion-protection equipment is provided with the multi-functional battery shell of the integrated cover plate explosion-protection equipment of explosive-proof sealed nut 2.As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 6, explosive-proof sealed nut 2 is arranged on the bottom of battery cap 1, adopts metal microdiecast technology one-body molded, saved the mechanical processing process of embodiment 1, processing and manufacturing is convenient, simple, the utilance height of material, and cost further reduces.Explosive-proof sealed nut 2 is arranged on the bottom of battery cap 1, can save the space, improves battery electric quantity, prevents external short circuit, easy operating, and product is attractive in appearance, practical.Relief tube 9 in the sealing screw rod 6 is interior hexagon, has dual-use function: one, pressure release passage; Its two, as the dismounting position, can directly use inner hexagon spanner, loading and unloading sealings screw rod 6.Processing and manufacturing is convenient, simple, the utilance height of material, and cost further reduces.Other structure of present embodiment 2 is identical with embodiment 1.
Claims (5)
1. the multi-functional battery shell of integrated cover plate explosion-protection equipment is characterized in that: the multi-functional battery shell of integrated cover plate explosion-protection equipment comprises: battery cap (1), explosive-proof sealed nut (2), sealing screw rod (6), rupture pressure disc (10) and elastic seal ring (11); The top of battery cap (1) or bottom are provided with explosive-proof sealed nut (2), explosive-proof sealed nut (2) adopts metal or the one-shot forming of non-metallic material package integral with battery cap (1), inwall at explosive-proof sealed nut (2) is provided with internal thread (3), explosive-proof sealed nut (2) bottom is provided with relief hole (4), pressure release (4) and battery case internal communication, the top of relief hole (4) is provided with elastic seal ring (11), sealing screw rod (6) periphery is cylindrical, the external diameter of sealing screw rod (6) is provided with external screw thread (7), the external screw thread (7) of sealing screw rod (6) adapts with the internal thread (3) of explosive-proof sealed nut (2), sealing screw rod (6) center is provided with relief tube (9), the lower surface of sealing screw rod (6) is provided with rupture pressure disc (10), the sealing screw rod (6) that the lower surface is provided with rupture pressure disc (10) is torqued into explosive-proof sealed nut (2), compresses elastic seal ring (11).
2. the multi-functional battery shell of integrated cover plate according to claim 1 explosion-protection equipment is characterized in that: explosive-proof sealed nut (2) is that an inwall is cylindrical, and the neighboring is circular or polygon-shaped cylinder.
3. the multi-functional battery shell of integrated cover plate according to claim 1 explosion-protection equipment, it is characterized in that: relief tube (9) is circle or inner polygon.
4. the multi-functional battery shell of integrated cover plate according to claim 1 explosion-protection equipment, it is characterized in that: the diameter of relief hole (4) is less than the internal diameter of explosive-proof sealed nut (2).
5. the multi-functional battery shell of integrated cover plate according to claim 1 explosion-protection equipment is characterized in that: the internal diameter of elastic seal ring (11) is identical with the internal diameter of relief hole (4), and the external diameter of elastic seal ring (11) is identical with the internal diameter of sealing nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020188370XU CN201725823U (en) | 2010-05-04 | 2010-05-04 | Multifunctional battery shell explosion-proof device with integrated cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020188370XU CN201725823U (en) | 2010-05-04 | 2010-05-04 | Multifunctional battery shell explosion-proof device with integrated cover plate |
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| Publication Number | Publication Date |
|---|---|
| CN201725823U true CN201725823U (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020188370XU Expired - Fee Related CN201725823U (en) | 2010-05-04 | 2010-05-04 | Multifunctional battery shell explosion-proof device with integrated cover plate |
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| CN (1) | CN201725823U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979590A (en) * | 2015-07-12 | 2015-10-14 | 陈卡丹 | Explosion-proof early-warning lithium battery |
| CN107240662A (en) * | 2017-07-03 | 2017-10-10 | 系统电子科技（镇江）有限公司 | A kind of battery modules shell of high safety performance |
| CN107968167A (en) * | 2016-10-20 | 2018-04-27 | 福特全球技术公司 | Pouch-type battery cell component for traction battery |
-
2010
- 2010-05-04 CN CN201020188370XU patent/CN201725823U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979590A (en) * | 2015-07-12 | 2015-10-14 | 陈卡丹 | Explosion-proof early-warning lithium battery |
| CN107293801A (en) * | 2015-07-12 | 2017-10-24 | 陈卡丹 | The explosion-proof method for early warning of lithium battery |
| CN104979590B (en) * | 2015-07-12 | 2018-05-18 | 陈卡丹 | Explosion-proof early warning lithium battery |
| CN107968167A (en) * | 2016-10-20 | 2018-04-27 | 福特全球技术公司 | Pouch-type battery cell component for traction battery |
| CN107968167B (en) * | 2016-10-20 | 2023-08-29 | 福特全球技术公司 | Pouch-type battery cell assembly for traction battery |
| CN107240662A (en) * | 2017-07-03 | 2017-10-10 | 系统电子科技（镇江）有限公司 | A kind of battery modules shell of high safety performance |
| CN107240662B (en) * | 2017-07-03 | 2023-06-23 | 系统电子科技（镇江）有限公司 | High-safety battery module shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20190504 |
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| CF01 | Termination of patent right due to non-payment of annual fee |