CN109860448A - A kind of cap assemblies and battery for battery - Google Patents
A kind of cap assemblies and battery for battery Download PDFInfo
- Publication number
- CN109860448A CN109860448A CN201910005253.0A CN201910005253A CN109860448A CN 109860448 A CN109860448 A CN 109860448A CN 201910005253 A CN201910005253 A CN 201910005253A CN 109860448 A CN109860448 A CN 109860448A
- Authority
- CN
- China
- Prior art keywords
- lid
- battery
- cap assemblies
- shell
- pressure release
- 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
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Classifications
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of cap assemblies and battery for battery, cap assemblies include the first lid and the second lid, first lid fits together with the second lid, and the two is electrically connected, cavity is formed in the inside of the first lid and the second lid, cavity is connected to the space other than battery, the first relief hole being connected to cavity is offered on second lid, pressure release block is provided in cavity, pressure release block forms the first relief hole and seals, when cell internal pressure is greater than the value of setting, deformation occurs for the sealing surface of pressure release block and the first relief hole, to release stress；Alternatively, offering the second relief hole being connected to cavity on the first lid, pressure release annular groove is offered in the range of being located at the second relief hole orthographic projection on the second lid.
Description
Technical field
The present invention relates to technology field of energy storage device, more particularly, to a kind of cap assemblies and electricity for battery
Pond.
Background technique
With the development of science and technology electronic product increasingly tends to minimize, and battery power supply is usually required in electronic product,
Therefore the size of battery is also designed to be smaller and smaller.
Battery generally includes shell, battery core and cap, and inside the shell, cap is fixedly connected battery core with shell, and cap with
The pole pole piece of battery core is electrically connected.Battery is powered electronic equipment by cap or charges to battery core.
Battery when in use, can cause internal pressure to increase because of aging or non-normal use, so that shell drum
It is swollen, the case where even explosion when serious, all there is certain harm to electronic equipment itself and user.
In view of this, it is desirable to provide the new technical solution of one kind is to solve the above problems.
Summary of the invention
It is an object of the present invention to provide the new solutions of a kind of cap assemblies for battery and battery.
According to the first aspect of the invention, a kind of cap assemblies for battery, including the first lid and second are provided
Lid, first lid fit together with the second lid, and the two is electrically connected, in first lid and the second lid
Inside form cavity, the cavity is connected to the space other than battery, offers on second lid and is connected to cavity
First relief hole is provided with pressure release block in the cavity, and the pressure release block forms first relief hole and seals, and works as electricity
When pond internal pressure is greater than the value of setting, deformation occurs for the sealing surface of the pressure release block and the first relief hole, to release stress；
Alternatively, offering the second relief hole being connected to cavity on first lid, it is located on second lid
Pressure release annular groove is offered in the range of the second relief hole orthographic projection.
Optionally, the cap assemblies include pressure release block, and the material of the pressure release block is plastics, rubber or silicon
Glue.
Optionally, the cap assemblies include pressure release block, and first lid forms the pressure release block and squeezes, with
The pressure release block is formed to first relief hole to seal.
Optionally, the edge of second lid is bent to side, and to form bending part, the bending part surrounds the company of being formed
The edge of access slot, first lid is embedded in the link slot.
Optionally, the end of the bending part forms clamping portion, and the edge of first lid is fastened on the clamping portion
It is interior.
According to the second aspect of the invention, a kind of battery is provided, the battery includes as described above for battery
Cap assemblies, shell, battery core and dead ring；The shell is cylindrical in shape structure, and the battery core is located in the shell, the cap
Cap assemblies are fixedly connected at the open end inner wall of the shell, between the open end inner wall of the cap assemblies and the shell
It is provided with sealing ring, is provided with dead ring between the cap assemblies and the battery core；First pole of the battery core and the cap
Second lid of cap assemblies forms electrical connection, and the second pole of the battery core is formed with the bottom surface of the shell to be electrically connected.
Optionally, the dead ring includes ontology and protrusion, and the ontology has central through hole, and the protrusion surrounds
Central through hole setting, forms step surface between the ontology and protrusion, the protrusion is towards second lid.
Optionally, the shell is circumferentially recessed locating slot at the outer wall of its open end, the locating slot
Bottom surface and side are adapted abutting with the step surface of the dead ring, and the upper bottom surface of the locating slot is used to support the cap
Component.
Optionally, bracket is provided in the shell, the bracket provides support for the cap assemblies.
Optionally, the side wall of the shell and bottom surface are integrally formed；Or the bottom of the side wall is opening, the shell
It further include bottom cover, after connecting with second pole, lid closes over said opening the bottom cover.
Cap assemblies and battery for battery of the invention are kept off by the way that pressure release is arranged in the cavity of cap assemblies
Block, and the first relief hole being connected to cavity is opened up on the second lid of cap assemblies, the pressure release block is to described
One relief hole forms sealing, when cell internal pressure is greater than the value of setting, the sealing of the pressure release block and the first relief hole
Deformation occurs in face, to discharge the pressure of inside battery, battery is avoided to expand explosion.
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.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of structural schematic diagram for the first embodiment of the cap assemblies of battery of the present invention；
Fig. 2 is a kind of structural schematic diagram of second of embodiment of cap assemblies for battery of the present invention；
Fig. 3 is a kind of structural schematic diagram for the third embodiment of the cap assemblies of battery of the present invention；
Fig. 4 is a kind of structural schematic diagram of the 4th kind of embodiment of the cap assemblies for battery of the present invention；
Fig. 5 is a kind of decomposition diagram of the first embodiment of battery of the present invention；
Fig. 6 is the structural schematic diagram of dead ring in a kind of battery of the present invention；
Fig. 7 is a kind of schematic cross-sectional view of the first embodiment of battery of the present invention；
Fig. 8 is a kind of cutaway top enlarged diagram of the first embodiment of battery of the present invention；
Fig. 9 is a kind of bottom cutaway enlargement diagram of the first embodiment of battery of the present invention；
Figure 10 is a kind of decomposition diagram of second of embodiment of battery of the present invention；
Figure 11 is a kind of schematic cross-sectional view of second of embodiment of battery of the present invention；
Figure 12 is a kind of cutaway top enlarged diagram of second of embodiment of battery of the present invention；
Figure 13 is a kind of decomposition diagram of the third embodiment of battery of the present invention；
Figure 14 is a kind of bottom cutaway enlargement diagram of the third embodiment of battery of the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, 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 range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
With reference to Fig. 1, the embodiment of the invention provides a kind of cap assemblies for battery.This is used for the cap assemblies of battery
Including the first lid 11 and the second lid 12, specifically, first lid 11 is passed through using the stainless steel with some strength
Stamping forming mode is made, and the second lid 12 passes through stamping forming mode system using aluminium flake with a certain toughness or alloy
At；First lid 11 fits together with the second lid 12, and the two is electrically connected；In first lid 11 and second
The inside of lid 12 forms cavity 13, and the cavity 13 is connected to the space other than battery, specifically, first lid 11 and
Second lid 12 is that middle part has the discoid of bulge-structure, and the protrusion at 12 middle part of first lid 11 and the second lid is tied
Structure is directed away from the direction protrusion of the cavity 13；The first relief hole being connected to cavity 13 is offered on second lid 12
121, it is provided in the cavity 13 and is able to carry out elastically-deformable pressure release block 14, in one embodiment, the pressure release gear
The material of block 14 is plastics, rubber or silica gel, for example, it is the fluorubber that can prevent battery electrolyte from corroding, silicon rubber
Or poly terephthalic acid class plastic material.The pressure release block 14 forms first relief hole 121 and seals, when in battery
When portion's pressure is greater than the value of setting, deformation occurs for the sealing surface of the pressure release block 14 and the first relief hole 121, to discharge battery
Internal pressure, avoids battery from expanding explosion.
In one embodiment, first lid 11 forms the pressure release block 14 and squeezes, so that the pressure release is kept off
Block 14 forms first relief hole 121 and seals.Specifically, the thickness of the pressure release block 14 is greater than the height of the cavity 13
Degree, pressure release block 14 is mounted in cavity 13 in the form of interference fit, therefore pressure release block 14 will receive the first lid naturally
11 extruding and the first relief hole 121 is formed and is sealed, without using the fixed pressure release block 14 of the modes such as gluing.It is such to match
Conjunction form enables pressure release block 14 to be closely firmly mounted in cavity 13, effective close to be formed to the first relief hole 121
Envelope.
As shown in Fig. 2, in one embodiment, the edge of second lid 12 is bent to side, specifically towards chamber
The direction of body 13 is bent, and to form bending part in the edge of the second lid 12, the bending part surrounds to form link slot
122, the edge of first lid 11 is embedded in the link slot 122.
As shown in figure 3, in one embodiment, the end of the bending part is bent again towards the direction of cavity 13
To form clamping portion 123, the edge of first lid 11 is fastened in the clamping portion 123.
Compared to the connection type of 12 parallel docking of the first lid 11 and the second lid in Fig. 1, first shown in Fig. 2, Fig. 3
The connection type of lid 11 and the second lid 12 is stronger reliable.
As shown in figure 4, the second relief hole 111 being connected to cavity 13 can also be offered on first lid 11,
Pressure release annular groove 124 is offered in the range of being located at 111 orthographic projection of the second relief hole on second lid 12, it is described to let out
The second relief hole of notch face 111 of pressure ring slot 124 is arranged, when cell internal pressure is greater than the value of setting, the pressure relief ring
The bottom of slot 124 occurs tearing and to releasing stress at second relief hole 111, and the bottom of pressure release annular groove 124 can be from the
Two relief holes 111 are rushed out.In this example embodiment, the second relief hole 111 is that going out for 124 bottom of pressure release annular groove provides sky
Between.It does not need to reserve bigger space between first lid 11 and the second lid 12, for example, the first lid 11 and the second lid
At least one of 12 can be made planar, and the space of saving can be used for improving the quality of battery core, to improve battery
Capacity.
Preferably, the pressure release annular groove 124 is a V-type annular groove, since V-type annular groove bottom has wedge angle, stress at this
It more concentrates, therefore as the pressure increases, sharp corner is easy to happen tearing to release stress, and battery is avoided to expand explosion.
The present invention also provides a kind of batteries, and with reference to Fig. 5, Fig. 7, Fig. 8 and Fig. 9, the battery includes as described above uses
In the cap assemblies 1 of battery, shell 2, battery core 3 and dead ring 4；The shell 2 is cylindrical in shape structure, and the battery core 3 is located at institute
State in shell 2, the cap assemblies 1 are fixedly connected at the open end inner wall of the shell 2, the cap assemblies 1 with it is described
It is provided with sealing ring 5 between the open end inner wall of shell 2, is provided with dead ring 4 between the cap assemblies 1 and the battery core 3；
The second lid 12 formation of the tab of first pole 31 of the battery core 3 and the cap assemblies 1 is electrically connected, and the of the battery core 3
The tab of two poles 32 is formed with the bottom surface of the shell 2 and is electrically connected.Specifically, one section of the tab of first pole 31 is fitted in
On two lids 12, another section insertion battery core 3 inside；The tab of second pole 32 is L-shaped, and the first segment of L-type is fitted in shell
On the inner bottom surface of body 2, second segment insertion battery core 3 inside, be provided with insulation between the first segment of L-type and the bottom surface of battery core 3
Pad 8.
As shown in fig. 6, in one embodiment, the dead ring 4 includes ontology 41 and protrusion 42, the ontology 41 has
There is central through hole, the protrusion 42 is arranged around the central through hole, forms the shape for being similar to flange；The ontology 41 with
Step surface 43 is formed between protrusion 42, the protrusion 42 is towards second lid 12.The central through hole is to allow
The tab of first pole 31 passes through to be welded with the second lid 12 of cap assemblies 1 afterwards, and dead ring 4 is designed as to the purpose of flange shape
It is to allow protrusion 42 to form an annular retaining wall, the shape between the first pole 31 and battery case 2 around the first pole 31
At isolation, prevent the first pole 31 and battery case 2 from touching occurs and short-circuit.
With reference to Fig. 8, in one embodiment, it is fixed that the shell 2 is circumferentially recessed at the outer wall of its open end
Position slot 21, locating slot 21 are formed by way of roller slot, the platform of the bottom surface of the locating slot 21 and side and the dead ring 4
Terrace 43 is adapted abutting, and the upper bottom surface of the locating slot 21 is used to support the cap assemblies 1.
With reference to Figure 10, Figure 11 and Figure 12, in one embodiment, bracket 6, the bracket 6 are provided in the shell 2
Support is provided for the cap assemblies 1.The bracket 6 can be located in shell 2 in the form of discrete spot distribution, as long as can be
Cap assemblies 1 provide support；Preferably, bracket 6 is designed as an annular support, annular support 6 is socketed in insulation
At the step surface 43 of ring 4, at this point, sealing ring 5 is between bracket 6 and cap assemblies 1.
Compared to the supporting way for forming locating slot 21 in 2 upper roller groove of shell, to cap assemblies 1 in a manner of bracket 6 is arranged
It is supported, can be avoided roller slot and shell 2 is caused to be squeezed and deformed, thus to the intracorporal electricity of shell after avoiding shell 2 from deforming
Core causes to damage；Setting bracket 6 keeps entire mounting process simply easily operated, and will not cause to damage to battery case.
In one embodiment, the side wall of the shell 2 and bottom surface are integrally formed, and in this case, shell 2 passes through drawing
The mode stretched forms, and bottom surface and side wall are linked together.The tab of second pole 32 fits at the inner bottom surface of shell, and capillary passes through
The inner bottom surface of the tab of second pole 32 and shell 2 is welded together through-hole among battery core 3；Shell can also optionally be passed through
The tab of the second pole 32 and the bottom surface of shell 2 is welded together in the mode of 2 outer bottom laser or resistance welding.
With reference to Figure 13 and Figure 14, the tab of the second pole 32 is relatively reliable for convenience and is welded to the bottom of shell 2 securely
Face can also realize the bottom surface of shell 2 and side wall using separated part, that is, the bottom of the side wall in one embodiment
Portion is opening, and the shell 2 further includes bottom cover 7, and the bottom cover 7 is connecting (for example, welding) with the tab of second pole 32
Afterwards, lid is closed over said opening and is welded with side wall, and operating space when being welded in this way is larger, so that tab
Welding with bottom cover 7 becomes easy.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range 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 embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of cap assemblies for battery, which is characterized in that including the first lid and the second lid, first lid with
Second lid fits together, and the two is electrically connected, and forms cavity in the inside of first lid and the second lid, described
Cavity is connected to the space other than battery, and the first relief hole being connected to cavity, the cavity are offered on second lid
It is inside provided with pressure release block, the pressure release block forms first relief hole and seals, when cell internal pressure is greater than setting
Value when, deformation occurs for the sealing surface of the pressure release block and the first relief hole, to release stress；
Alternatively, offering the second relief hole being connected to cavity on first lid, it is located on second lid described
Pressure release annular groove is offered in the range of second relief hole orthographic projection.
2. the cap assemblies according to claim 1 for battery, which is characterized in that the cap assemblies include pressure release gear
Block, the material of the pressure release block are plastics, rubber or silica gel.
3. the cap assemblies according to claim 1 or 2 for battery, which is characterized in that the cap assemblies include letting out
Block is pressed, first lid forms the pressure release block and squeezes, so that the pressure release block is to the first relief hole shape
At sealing.
4. the cap assemblies according to claim 1 or 2 for battery, which is characterized in that the edge of second lid
It is bent to side, to form bending part, the bending part surrounds to form link slot, and the edge of first lid is embedded in the company
In access slot.
5. the cap assemblies according to claim 4 for battery, which is characterized in that the end of the bending part forms card
The edge of socket part, first lid is fastened in the clamping portion.
6. a kind of battery, which is characterized in that the battery includes the cap according to any one of claims 1 to 5 for battery
Cap assemblies, shell, battery core and dead ring；The shell is cylindrical in shape structure, and the battery core is located in the shell, the cap
Component is fixedly connected at the open end inner wall of the shell, is set between the open end inner wall of the cap assemblies and the shell
It is equipped with sealing ring, is provided with dead ring between the cap assemblies and the battery core；First pole of the battery core and the cap
Second lid of component forms electrical connection, and the second pole of the battery core is formed with the bottom surface of the shell to be electrically connected.
7. battery according to claim 6, which is characterized in that the dead ring includes ontology and protrusion, the ontology
With central through hole, the protrusion is arranged around the central through hole, and step surface, institute are formed between the ontology and protrusion
Protrusion is stated towards second lid.
8. battery according to claim 7, which is characterized in that the shell is circumferentially interior at the outer wall of its open end
Spill is adapted abutting, the positioning with the step surface of the dead ring at locating slot, the bottom surface of the locating slot and side
The upper bottom surface of slot is used to support the cap assemblies.
9. battery according to claim 6, which is characterized in that be provided with bracket in the shell, the bracket is institute
It states cap assemblies and support is provided.
10. the battery according to any one of claim 6-9, which is characterized in that the side wall of the shell and bottom surface one
Molding；Or the bottom of the side wall is opening, the shell further includes bottom cover, and the bottom cover is connect with second pole
Afterwards, lid closes over said opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005253.0A CN109860448A (en) | 2019-01-03 | 2019-01-03 | A kind of cap assemblies and battery for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005253.0A CN109860448A (en) | 2019-01-03 | 2019-01-03 | A kind of cap assemblies and battery for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109860448A true CN109860448A (en) | 2019-06-07 |
Family
ID=66893913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910005253.0A Pending CN109860448A (en) | 2019-01-03 | 2019-01-03 | A kind of cap assemblies and battery for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109860448A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787004A (en) * | 2021-03-12 | 2021-05-11 | 惠州市超聚电池有限公司 | Steel shell button cell packaging structure and steel shell button cell |
| CN115347302A (en) * | 2022-08-17 | 2022-11-15 | 广州小鹏汽车科技有限公司 | Bottom cap subassembly and cylinder battery |
| WO2023004828A1 (en) * | 2021-07-30 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, power consuming device, and method and device for manufacturing battery cell |
| CN116581466A (en) * | 2023-07-11 | 2023-08-11 | 宁德时代新能源科技股份有限公司 | Pressure release part, battery monomer, battery and power consumption device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112787004A (en) * | 2021-03-12 | 2021-05-11 | 惠州市超聚电池有限公司 | Steel shell button cell packaging structure and steel shell button cell |
| WO2023004828A1 (en) * | 2021-07-30 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, power consuming device, and method and device for manufacturing battery cell |
| CN115347302A (en) * | 2022-08-17 | 2022-11-15 | 广州小鹏汽车科技有限公司 | Bottom cap subassembly and cylinder battery |
| CN116581466A (en) * | 2023-07-11 | 2023-08-11 | 宁德时代新能源科技股份有限公司 | Pressure release part, battery monomer, battery and power consumption device |
| CN116581466B (en) * | 2023-07-11 | 2023-10-27 | 宁德时代新能源科技股份有限公司 | Pressure release part, battery monomer, battery and power consumption device |
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Application publication date: 20190607 |