CN108054303A - Prismatic battery or button cell - Google Patents
Prismatic battery or button cell Download PDFInfo
- Publication number
- CN108054303A CN108054303A CN201711173624.3A CN201711173624A CN108054303A CN 108054303 A CN108054303 A CN 108054303A CN 201711173624 A CN201711173624 A CN 201711173624A CN 108054303 A CN108054303 A CN 108054303A
- Authority
- CN
- China
- Prior art keywords
- cover
- housing
- sealing ring
- side wall
- button cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/107—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/109—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure of button or coin shape
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/153—Lids or covers characterised by their shape for button or coin cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/105—NTC
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/106—PTC
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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
Abstract
The invention discloses a kind of prismatic battery or button cells.The battery includes cover, housing and sealing ring, the cover and the housing are tubular structure of the tool there are one cover, the cover and the housing snap together, to be enclosed to accommodate the confined space of battery core, the sealing ring is between the side wall of the cover and the side wall of the housing, the sealing ring can shrink or tear in the case where reaching design temperature, to form gap between the side wall of the side wall of the cover and the housing, to carry out pressure release.The sealing ring of the battery can shrink or tear at a set temperature, so as to carry out pressure release, have the characteristics that security performance is excellent.
Description
Technical field
The present invention relates to battery technology field, more particularly, to a kind of prismatic battery or button cell.
Background technology
Prismatic battery or button cell generally include cover, housing and battery core.Cover and housing snap together, at it
Internal form confined space.Cover and housing are metal material, for example, stainless steel.Battery core is located in confined space.Battery core
Positive pole ear is connected with cover, and negative lug is connected with housing.Anode of the cover as battery, cathode of the housing as battery.
There is sealing ring between a positive electrode and a negative electrode.Sealing ring makes cover and housing seal and mutually insulated.
There is short circuit in battery, overcharge, overload, in the case of external heating, the temperature of inside battery can raise.Temperature liter
Height causes the air pressure in confined space to raise.Existing battery structure, sealing ring it is typically non-deformable when heated or
Tear or sealing ring expand when heated.The gas of high pressure can not pressure release, be easy to cause prismatic battery or button
Battery explosion, burning, cause security incident.
The content of the invention
It is an object of the present invention to provide the new solutions of a kind of prismatic battery or button cell.
According to the first aspect of the invention, a kind of prismatic battery or button cell are provided.The battery includes cover, shell
Body and sealing ring, the cover and the housing are tubular structure of the tool there are one cover, the cover and the housing button
It is combined, to be enclosed to accommodate the confined space of battery core, the sealing ring is located at side wall and the institute of the cover
Between the side wall for stating housing, the sealing ring can shrink or tear in the case where reaching design temperature, in the side wall of the cover
Gap is formed between the side wall of the housing, to carry out pressure release.
Optionally, the sealing ring is configured to shrink or tear under conditions of meeting or exceeding 100 DEG C.
Optionally, the material of the sealing ring includes the thermoplasticity of at least one of PET, PE, PP, ABS, PVC and EVA
Plastics.
Optionally, the cover is located at the inside of the housing, and the bottom of the sealing ring takes the shape of the letter U structure, the U-shaped knot
Structure coats the lower end of the side wall of the cover；Or
The L-shaped structure in bottom of the sealing ring, the L-shaped structure and the lower face of the side wall of the cover offset.
Optionally, the cover of the housing has groove, and what the groove was configured to generate during release assembling answers
Power.
Optionally, before assembly, the sealed glue immersion treatment of the sealing ring.
Optionally, filling member is further included, the filling member is insulating materials, and the filling member covers the housing and described
The exterior slots of cover.
Optionally, the filling member is three proofings glue or pitch.
Optionally, protection element is further included, the protection element is configured to prevent over-charging of battery, crosses and put, is short-circuit
And/or overload.
Optionally, further include to connect the sub-thread enameled wire of external circuit, the sub-thread enameled wire is directly welded at
The cover and the housing it is at least one on.
According to one embodiment of the disclosure, sealing ring shrinks or tears in the case where reaching design temperature, so as in column
When the air pressure inside of battery or button cell is excessively high, releasing pressure automatically can be carried out.Battery explosion can be so effectively prevented, is carried
The high security performance of battery, reduces security risk.
In addition, the prismatic battery or button cell do not have in addition set relief valve just can releasing pressure automatically.This mode drops
The low cost of battery, the process for simplifying battery making.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the sectional view of prismatic battery or button cell according to an embodiment of the invention.
Fig. 2 is the partial enlarged view at A in Fig. 1.
Fig. 3 is the partial enlarged view at B in Fig. 1.
Reference sign：
11：Cover；12：The cover of cover；13：The side wall of cover；14：Step structure；15：Housing；16：The lid of housing
Portion；17：The side wall of housing；18：Groove；20：Sealing ring；21：U-shaped structure；22：Filling member；23：Positive pole ear；24：Sub-thread paint
Envelope curve；25：Gasket；26：Negative lug；27：Battery core.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition have
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The scope of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
According to one embodiment of present invention, a kind of prismatic battery or button cell are provided.As shown in Figure 1, the electricity
Pond includes cover 11, housing 15 and sealing ring 20.Cover 11 and housing 15 are tubular structure of the tool there are one cover.Cover 11
It is snapped together with housing 15, to be enclosed to accommodate the confined space of battery core 27.
It should be noted that the open end of cover 11 and the open end of housing 15 mutually fasten.The side wall 13 and shell of cover
The side wall 17 of body intersects.The side wall 13 of cover is inserted into the cavity of housing 15.The end Zuo Shou sides processing of the side wall 17 of housing, with
Cover 11 is formed and is fixed；Or the side wall 17 of housing is inserted into the cavity of cover 11, the end Zuo Shou sides of the side wall 13 of cover
Processing is fixed with being formed to housing 15.
Preferably, as shown in Figs. 1-2, in the side wall 13 of cover or the side wall 17 of housing platform is formed close to the position of cover
Stage structure 14.For example, the step height of step structure 14 is equal to the wall thickness positioned at external side wall.When carrying out receipts side, it is located at
External side wall can enter in step structure 14, to form cladding.This structure can make the shape of battery more smooth.
In addition, step structure 14 so that the positioning of cover 11 and housing 15 in assembling is more accurate, installation accuracy is improved.
Battery core 27 may be employed the modes such as winding or stacking and be made.The electrolyte of battery core 27 can be liquid electrolyte
Matter, solid electrolyte or semisolid electrolyte.For example, electrolyte is set by the way of impregnating, inject or directly coat
On the isolation film for putting battery core 27.
Sealing ring 20 is located between the side wall 13 of cover and the side wall 17 of housing.For example, sealing ring 20 has elasticity, use
In sealing cover body 11 and housing 15, to form confined space.Sealing ring 20 is additionally operable to that cover 11 and housing 15 is made to insulate, even if just
Pole and negative insulation.
In this example embodiment, sealing ring 20 can shrink or tear in the case where reaching design temperature, in 13 He of side wall of cover
Gap is formed between the side wall 17 of housing, to carry out pressure release.When sealing ring 20 is shunk, the side wall 17 of housing and the side wall of cover
Gap is formed between 13.Gas passes through the slot leakage.When sealing ring 20 is torn, sealing ring 20 itself forms gap.Gas
Pass through the slot leakage.Those skilled in the art can select the material of sealing ring 20 according to actual needs, to meet pressure release
Temperature requirement.
In embodiments of the present invention, sealing ring 20 shrinks or tears in the case where reaching design temperature, so as in prismatic battery
Or button cell air pressure inside it is excessively high when, releasing pressure automatically can be carried out.Battery explosion can be so effectively prevented, is improved
The security performance of battery, reduces security risk.
In addition, the prismatic battery or button cell do not have in addition set relief valve just can releasing pressure automatically.This mode drops
The low cost of battery, the process for simplifying battery making.
In one example, sealing ring 20 is configured to shrink or tear under conditions of meeting or exceeding 100 DEG C.It should
Temperature conditionss can guarantee the safe to use of prismatic battery or button cell.
In one example, including PET, (Polyethylene Terephthalate gather to benzene the material of sealing ring 20
Dioctyl phthalate second diester), PE (Polyethylene, polyethylene), PP (Polypropylene polypropylene), ABS
(Acrylonitrile Butadiene Styrene acrylonitrile-butadiene-styrene (ABS)s), EVA (Ethylene Vinyl
Acetate Copolymer ethene-vinyl acetate copolymers) and PVC (Polyvinyl Chloride, polyvinyl chloride) in extremely
A kind of few thermoplastic.Above-mentioned material has the characteristic shunk or torn at high temperature.Battery occur short circuit, overcharge,
In the case of overload, external heating, sealing ring 20 can shrink or tear so that the gases at high pressure of inside battery are from 11 He of cover
It is released between housing 15, catches fire or explode caused by so as to avoid the high temperature of battery.
In one example, as shown in figs. 1 and 3, cover 11 is located at the inside of housing 15.The bottom of sealing ring 20 takes the shape of the letter U
Structure 21.U-shaped structure 21 coats the lower end of the side wall 13 of cover.In this configuration.The outside of U-shaped structure 21 and the cover of housing
16 offset, and the lower face of the side wall 13 of inside and cover offsets, and so increases the sealing area of sealing ring 20 so that cover 11
Sealing effect between housing 15 is more preferable.
In addition, U-shaped structure 21 prevents cover 11 and housing 15 from contacting with each other, avoid cover 11 and housing 15 formed it is short
Road.
In other examples, the L-shaped structure in the bottom of sealing ring 20.L-shaped structure and the lower face phase of the side wall 13 of cover
It supports.The outside of L-shaped structure and the cover 16 of housing offset, and the lower face of the side wall 13 of inside and cover offsets, and this mode is same
Sample increases the sealing area of sealing ring 20 so that the sealing effect between cover 11 and housing 15 is more preferable.
In addition, L-shaped structure prevents cover 11 and housing 15 from contacting with each other, avoid cover 11 and housing 15 forms short circuit.
In one example, as shown in figure 3, being additionally provided between U-shaped structure 21 or L-shaped structure and the cover of housing 16
Gasket 25.Gasket 25 and the compatibility of sealing ring 20 are good, can effectively reduce the formation in gap, further improve sealing
Effect.For example, gasket 25 and sealing ring 20 use identical material.In other examples, the material of gasket 25 can be
But it is not limited to rubber, silica gel, plastics etc..
In assembling, since the hardness of sealing ring 20 is larger, therefore U-shaped structure 21 or L are bent into the lower end of sealing ring 20
The difficulty of shape structure is larger.In one example, before assembly, first, sealing ring 20 is impregnated in glue is sealed.Example
Such as, fluid sealant water uses resin glue.The softness become by impregnating sealing ring 20；Then, then bent.This mode
So that the making of U-shaped structure 21 or L-shaped structure becomes easy.
In addition, sealing glue can also play the role of fluid-tight, even if the local thickness of sealing ring 20 is uneven or occurs
Fold can also be made up by sealing glue.This causes between cover 11 and sealing ring 20 and housing 15 and sealing ring 20
Between sealing effect it is more preferable.
In assembling, the lower end of the side wall 13 of cover easily offsets with the cover of housing 16 and forms extruding, especially exists
When the upper end of the side wall 17 of housing carries out receipts side, stress can be very big.Stress can cause the cover 16 of housing outwardly, and being formed should
Become, so as to destroy the flatness of battery entirety.In order to solve the technical problem, in one example, as shown in figure 3, housing
Cover 16 has groove 18.Groove 18 is configured to the stress generated during release assembling.
For example, groove 18 is the protrusion that protrudes from confined space or protrudes from protrusion outside confined space.It is assembling
When, groove 18 can provide buffering by the deformation of itself for stress, so as to prevent that cover is outwardly, keep battery
Flatness.
Preferably, groove 18 is loop configuration.This structure can buffer the stress from cover all directions.Groove 18
Depth be 0.2mm.The depth can effectively absorb the strain of cover.
In one example, as shown in figure 3, groove 18 is the loop configuration protruded to confined space.Outside loop configuration
Side takes the shape of the letter U structure together with the side wall 17 of housing.The U-shaped structure can form the extruding of the lower end to sealing ring 20.This causes
The formation of the U-shaped structure 21 of 20 lower end of sealing ring becomes easy.
In addition, the U-shaped structure of housing 15 further increases the sealing area with the U-shaped structure of sealing ring 20 21, this makes
The sealing effect for obtaining cover 11 and housing 15 is more preferable.
Under normal conditions, cover 11, housing 15 and sealing ring 20 can form exterior slots after the completion of assembling.For example,
Exterior slots are located at the position on the receipts side of housing 15.The exterior slots are exposed outside, and the flatness of battery can be caused to be deteriorated.In electricity
During the use of pond, for example, human hand fetching battery either carries out the salinity or salt fog in human sweat during salt spray test
The salinity of experiment can be gathered in the exterior slots.Under certain humidity cover 11 and housing 15 can turn on salinity, i.e., just
Pole and cathode conducting.So so that battery is no in use, slowly discharging since itself forms micro-current.
In order to solve this problem, in one example, as shown in Figs. 1-2, battery further includes filling member 22.Filling member 22 is
Insulating materials.Filling member 22 covers housing 15 and the exterior slots of cover 11.Pass through the setting exterior slots of filling member 22
It is capped.This causes the flatness of battery to improve, and reduces or even avoids salinity and assembles between cover 11 and housing 15,
So as to effectively prevent the formation of the micro-current of battery itself, the electric discharge of battery is greatly reduced.
It should be noted that salinity is gathered in external margin, and the technical issues of causing battery self-discharge, is difficult in itself
It is found.Therefore, the technical assignment or the technical problem to be solved is that art technologies that the embodiment of the present invention to be realized
It is that personnel never expect or it is not expected that, therefore the embodiment of the present invention is a kind of new technical solution.
In one example, filling member 22 is three proofings glue or pitch.For example, three proofings glue is organic-silicon-modified resin glue.
Three proofings glue and pitch can soften at the temperature (for example, reaching 85 DEG C) of setting, so as to shrink in sealing ring or tear first three
Anti- glue protective layer first loses sealing function, interferes to avoid being formed to pressure release passage.
In addition, after hardening, three proofings glue surface is smooth, and specific surface area is small, so as to assemble salinity.
Pitch can equally play good covering and insulation effect.
In one example, battery further includes protection element (not shown).Protection element is configured to prevent column
Battery or button cell are overcharged, put excessively, short-circuit and/or overload.
For example, protection element is located at outside confined space.The anode of the positive pole ear 23 of battery core 27, cover 11 and protection element
End is sequentially connected in series.The negative pole end of the negative lug 26 of battery core 27, housing 15 and protection element is sequentially connected in series.For example, using laser
Welding is attached.Protection element has the contact being electrically connected with external circuit.
For example, protection element is located in confined space.The positive pole ear 23 of battery core 27, the positive terminal cover 11 of protection element
Be sequentially connected in series.The negative lug 26 of battery core 27, the negative pole end of protection element and housing 15 are sequentially connected in series.For example, using laser
Welding is attached.
For example, protection element is protection chip.When protection chip is put in over-charging of battery, excessively, overloads or is short-circuit, battery core is cut off
The circuit of 27 positive and negative electrode can so play the role of protection.Protection element significantly improves the security performance of battery.
In one example, protection element is also integrated with MOS switch, PTC units and NTC units.MOS switch can avoid
Surge current damages battery.
In addition, when battery charges, temperature is excessively high or too low all battery can be damaged.In the situation that temperature is excessively high
Under, PTC units cut-out charging circuit, so as to prevent the high temperature of battery from damaging.In the case where temperature is too low, the cut-out of NTC units
Charging circuit, so as to prevent the low temperature of battery from damaging.
Under normal conditions, the cover 12 of the cover of battery and the cover 16 of housing are welded with pole piece.For example, L-shaped nickel
Piece.Sub-thread enameled wire 24 is respectively welded on two pole pieces.Sub-thread enameled wire 24 is turned on external circuit.In this fashion,
Pole piece occupies certain space, this causes the height of battery to become larger, and is unfavorable for being installed in relatively small space.
In order to solve the technical problem, in one example, as shown in Figure 1, battery further includes to connect external circuit
Sub-thread enameled wire 24.Sub-thread enameled wire 24 be directly welded at cover 11 and housing 15 it is at least one on.For example, by swashing
Sub-thread enameled wire 24 is welded to the cover 16 of housing and/or the cover 12 of cover by the mode of photocoagulation or resistance welding.Pass through
This mode, the height of battery become smaller, and can be adapted to smaller installation space, improve the suitability of battery.
In addition, saving the material of battery in this way, and simplify processing technology.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the scope being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright scope is defined by the following claims.
Claims (10)
1. a kind of prismatic battery or button cell, which is characterized in that including cover, housing and sealing ring, the cover and institute
It is tubular structure of the tool there are one cover to state housing, and the cover and the housing are snapped together, be used for being enclosed
The confined space of battery core is accommodated, the sealing ring is described close between the side wall of the cover and the side wall of the housing
Seal can shrink or tear in the case where reaching design temperature, to be formed between the side wall of the side wall of the cover and the housing
Gap, to carry out pressure release.
2. prismatic battery according to claim 1 or button cell, which is characterized in that the sealing ring is configured to
It shrinks or tears under conditions of meeting or exceeding 100 DEG C.
3. prismatic battery according to claim 1 or button cell, which is characterized in that the material of the sealing ring includes
The thermoplastic of at least one of PET, PE, PP, ABS, PVC and EVA.
4. prismatic battery according to claim 1 or button cell, which is characterized in that the cover is located at the housing
Inside, the bottom of the sealing ring takes the shape of the letter U structure, and the U-shaped structure coats the lower end of the side wall of the cover；Or
The L-shaped structure in bottom of the sealing ring, the L-shaped structure and the lower face of the side wall of the cover offset.
5. prismatic battery according to claim 1 or button cell, which is characterized in that the cover of the housing has ditch
Slot, the groove are configured to the stress generated during release assembling.
6. prismatic battery according to claim 1 or button cell, which is characterized in that before assembly, the sealing ring
Sealed glue immersion treatment.
7. prismatic battery according to claim 1 or button cell, which is characterized in that filling member is further included, it is described to fill out
Part is filled for insulating materials, and the filling member covers the housing and the exterior slots of the cover.
8. prismatic battery according to claim 1 or button cell, which is characterized in that the filling member for three proofings glue or
Person's pitch.
9. prismatic battery according to claim 1 or button cell, which is characterized in that protection element is further included, it is described
Protection element is configured to prevent over-charging of battery, put excessively, short-circuit and/or overload.
10. prismatic battery according to claim 1 or button cell, which is characterized in that further include to connect outside
The sub-thread enameled wire of circuit, the sub-thread enameled wire be directly welded at the cover and the housing it is at least one on.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711173624.3A CN108054303A (en) | 2017-11-22 | 2017-11-22 | Prismatic battery or button cell |
| PCT/CN2017/118910 WO2019100516A1 (en) | 2017-11-22 | 2017-12-27 | Columnar battery or button battery |
| DE202017007353.6U DE202017007353U1 (en) | 2017-11-22 | 2017-12-27 | Cylindrical battery or button battery |
| EP17933051.9A EP3709380A4 (en) | 2017-11-22 | 2017-12-27 | Columnar battery or button battery |
| US16/880,361 US11502370B2 (en) | 2017-11-22 | 2020-05-21 | Cylindrical or button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711173624.3A CN108054303A (en) | 2017-11-22 | 2017-11-22 | Prismatic battery or button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108054303A true CN108054303A (en) | 2018-05-18 |
Family
ID=62120204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711173624.3A Pending CN108054303A (en) | 2017-11-22 | 2017-11-22 | Prismatic battery or button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108054303A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109065823A (en) * | 2018-09-20 | 2018-12-21 | 刘秦 | Button cell |
| CN110048053A (en) * | 2019-04-10 | 2019-07-23 | 常州微宙电子科技有限公司 | Shell and energy storage device for energy storage device |
| CN111009624A (en) * | 2019-11-05 | 2020-04-14 | 广东微电新能源有限公司 | Button cell and electronic device |
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