CN209217132U - A kind of lithium battery - Google Patents
A kind of lithium battery Download PDFInfo
- Publication number
- CN209217132U CN209217132U CN201822265863.8U CN201822265863U CN209217132U CN 209217132 U CN209217132 U CN 209217132U CN 201822265863 U CN201822265863 U CN 201822265863U CN 209217132 U CN209217132 U CN 209217132U
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- CN
- China
- Prior art keywords
- separation layer
- upper housing
- lower case
- lithium battery
- negative electrode
- 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.)
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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)
- Secondary Cells (AREA)
Abstract
The utility model relates to a kind of lithium batteries, including upper housing and lower case, upper housing is connect with negative lug, lower case is connect with positive pole ear, and negative electrode tab, positive plate and separation layer are equipped between upper housing and lower case, and the middle section of separation layer is clamped between negative electrode tab and positive plate, separation layer both ends pass through insulating gasket respectively and are sealed with upper housing and lower case, separation layer both ends thickness intermediate thin, separation layer middle section and upper housing form trapezoidal upper plenum, and negative electrode tab is located therein；Separation layer middle section and lower case also form trapezoidal lower cavity, and positive plate is located therein；Insulating gasket includes a horizontal component and sloping portion, and horizontal component is extruded between separation layer and upper housing or is compressed between separation layer and lower case；Sloping portion sticks on the inclined-plane of trapezoidal upper plenum or trapezoidal lower cavity.
Description
Technical field
The utility model relates to a kind of lithium batteries, more particularly, to a kind of sealing structure of lithium battery.
Background technique
The existing usual structure of lithium battery is that electrode and diaphragm are placed in a shell, and the complexity of shell causes internal
Layer structure needs multidirectional bonding connection, so that there are problems for the stability and conductibility of lithium battery.
In addition, the electric connector of electrode pass through entire shell after connect with electrode, if seal it is bad also be easy to cause from
Leakage problem caused by and.
Summary of the invention
The technical issues of the utility model devises a kind of lithium battery, solves is that the structure of existing lithium battery is not steady enough
It is fixed, and sealing structure bad the problem of being easy to appear leakage.
In order to solve above-mentioned technical problem, the utility model uses following scheme:
A kind of lithium battery, including upper housing and lower case, upper housing are connect with negative lug, and lower case and positive pole ear connect
It connects, negative electrode tab, positive plate and separation layer is equipped between upper housing and lower case, the middle section of separation layer is clamped in negative electrode tab
Between positive plate, separation layer both ends pass through insulating gasket respectively and are sealed with upper housing and lower case, separation layer both ends
Thick intermediate thin, separation layer middle section and upper housing form trapezoidal upper plenum, and negative electrode tab is located therein；Separation layer middle section with
Lower case also forms trapezoidal lower cavity, and positive plate is located therein；Insulating gasket includes a horizontal component and sloping portion, water
Flat portion extrusion is between separation layer and upper housing or is compressed between separation layer and lower case；Sloping portion sticks in trapezoidal
On the inclined-plane of upper plenum or trapezoidal lower cavity.
Further, it is equipped with shrinkage pool in the upper housing or the lower case, the horizontal component bottom is pressed into institute
It states and increases sealing effect in shrinkage pool.
Further, the joint face height and the negative electrode tab of the separation layer both ends and the upper housing and the upper casing
The joint face height of body is identical, the joint face height of the separation layer both ends and the lower case and the positive plate with it is described
The joint face height of lower case is identical.
It further, further include negative conductive bonding material layer and positive conductive bonding material layer, the negative conductive bonding
Material layer or the positive conductive bonding material layer are in order to improve switching performance and reduce transition resistance；The negative conductive bonding
Material layer is clamped between the upper housing and the negative electrode tab, and the positive conductive bonding material layer is clamped in the lower case
Between the positive plate.
Further, the material of the negative electrode tab is lithium and cobalt oxides.
Further, the material of the positive plate is graphite.
Further, the material of the separation layer is polyethylene terephthalate.
Further, the upper housing and the lower case are copper, aluminium, metal foil made of titanium or steel.
The lithium battery has the advantages that compared with existing lithium battery
(1) insulating gasket of the utility model is made of horizontal component and sloping portion, and inclination department sticks in inclined-plane
On can be with, the normal use for increasing sealing area and will not influence battery can be played, avoid the generation of leakage.
(2) the utility model is equipped with shrinkage pool in upper housing or lower case, shrinkage pool can make insulating gasket underfill its
In, so that original sealing track becomes more complicated, better tightness.
(3) the utility model makes the stability of entire battery more preferable due to the structure of separation layer both ends thickness intermediate thin, prolongs
The service life of battery is grown.
Detailed description of the invention
Fig. 1: the structural schematic diagram of the utility model lithium battery；
Enlarged diagram in Fig. 2: Fig. 1 at A.
Description of symbols:
1-upper housing；2-lower cases；21-shrinkage pools；3-negative electrode tabs；4-positive plates；5-separation layers；6-insulation are close
Packing；61-sloping portions；62-horizontal components；7-positive pole ears；8-negative lugs.
Specific embodiment
Below with reference to Fig. 1 to Fig. 2, the utility model is described further:
As shown in Figure 1, a kind of lithium battery, including upper housing 1 and lower case 2, upper housing 1 are connect with negative lug 8, lower casing
Body 2 is connect with positive pole ear 7, and negative electrode tab 3, positive plate 4 and separation layer 5, separation layer 5 are equipped between upper housing 1 and lower case 2
Middle section be clamped between negative electrode tab 3 and positive plate 4,5 both ends of separation layer pass through insulating gasket 6 and upper housing 1 respectively
It is sealed with lower case 2.
5 both ends thickness intermediate thin of separation layer, 5 middle section of separation layer and upper housing 1 form trapezoidal upper plenum, and negative electrode tab 3
In wherein；5 middle section of separation layer and lower case 2 also form trapezoidal lower cavity, and positive plate 4 is located therein.The utility model by
Make the stability of entire battery more preferable in the structure of separation layer both ends thickness intermediate thin, extends the service life of battery.
Insulating gasket 6 include a horizontal component 62 and sloping portion 61, horizontal component 62 be extruded in separation layer 5 with it is upper
Between shell 1 or it is extruded between separation layer 5 and lower case 2；Sloping portion 61 sticks in trapezoidal upper plenum or trapezoidal lower cavity
Inclined-plane on.The insulating gasket of the utility model is made of horizontal component and sloping portion, and inclination department sticks on inclined-plane
It can be can play the normal use for increasing sealing area and will not influence battery, avoid the generation of leakage.
As shown in Fig. 2, being equipped with shrinkage pool 21 in upper housing 1 or lower case 2,62 bottom of horizontal component is pressed into shrinkage pool 21
Middle increase sealing effect.Shrinkage pool in the utility model can make insulating gasket underfill wherein, so that original
Sealing track becomes more complicated, better tightness.
The joint face height and negative electrode tab 3 of 5 both ends of separation layer and upper housing 1 are identical as the joint face height of upper housing 1,
The joint face height and positive plate 4 of 5 both ends of separation layer and lower case 2 are identical as the joint face height of lower case 2.
The material of negative electrode tab 3 is lithium and cobalt oxides.The material of positive plate 4 is graphite.The material of separation layer 5 is poly- to benzene two
Formic acid glycol ester.Upper housing 1 and lower case 2 are copper, aluminium, metal foil made of titanium or steel.
It further include negative conductive bonding material layer and positive conductive bonding material layer, negative conductive bonding material layer is clamped in
Between upper housing 1 and negative electrode tab 3, positive conductive bonding material layer is clamped between lower case 2 and positive plate 4.
Illustrative description has been carried out to the utility model above in conjunction with attached drawing, it is clear that the realization of the utility model not by
The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without
It improves and the conception and technical scheme of the utility model is directly applied into other occasions, in the protection scope of the utility model
It is interior.
Claims (8)
1. a kind of lithium battery, including upper housing (1) and lower case (2), upper housing (1) are connect with negative lug (8), lower case
(2) it is connect with positive pole ear (7), negative electrode tab (3), positive plate is equipped between the upper housing (1) and the lower case (2)
(4) it is clamped between the negative electrode tab (3) and the positive plate (4) with separation layer (5), the middle section of the separation layer (5),
Separation layer (5) both ends pass through insulating gasket (6) respectively and are sealed with the upper housing (1) and the lower case (2),
It is characterized by:
Separation layer (5) both ends thickness intermediate thin, separation layer (5) middle section and the upper housing (1) are formed on trapezoidal
Cavity, the negative electrode tab (3) are located therein；Separation layer (5) middle section and the lower case (2) also form trapezoidal lower sky
Chamber, the positive plate (4) are located therein；
The insulating gasket (6) includes a horizontal component (62) and sloping portion (61), and the horizontal component (62) squeezes
Between the separation layer (5) and the upper housing (1) or it is extruded between the separation layer (5) and the lower case (2)；Institute
Sloping portion (61) is stated to stick on the inclined-plane of the trapezoidal upper plenum or the trapezoidal lower cavity.
2. lithium battery according to claim 1, it is characterised in that: be equipped in the upper housing (1) or the lower case (2) recessed
Hole (21), horizontal component (62) bottom, which is pressed into the shrinkage pool (21), increases sealing effect.
3. lithium battery according to claim 2, it is characterised in that: separation layer (5) both ends and the upper housing (1)
Joint face height and the negative electrode tab (3) are identical as the joint face height of the upper housing (1), separation layer (5) both ends
And the joint face height and the positive plate (4) of the lower case (2) are identical as the joint face height of the lower case (2).
4. lithium battery according to claim 2, it is characterised in that: further include that negative conductive bonding material layer and positive conductive are viscous
Condensation material layer, the negative conductive bonding material layer are clamped between the upper housing and the negative electrode tab, the positive conductive
Bonding material layer is clamped between the lower case and the positive plate.
5. lithium battery according to claim 2, it is characterised in that: the material of the negative electrode tab (3) is lithium and cobalt oxides.
6. lithium battery according to claim 2, it is characterised in that: the material of the positive plate (4) is graphite.
7. lithium battery according to claim 2, it is characterised in that: the material of the separation layer (5) is poly terephthalic acid second
Diol ester.
8. lithium battery according to claim 2, it is characterised in that: the upper housing (1) and the lower case (2) be copper, aluminium,
Metal foil made of titanium or steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822265863.8U CN209217132U (en) | 2018-12-31 | 2018-12-31 | A kind of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822265863.8U CN209217132U (en) | 2018-12-31 | 2018-12-31 | A kind of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209217132U true CN209217132U (en) | 2019-08-06 |
Family
ID=67466637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822265863.8U Active CN209217132U (en) | 2018-12-31 | 2018-12-31 | A kind of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209217132U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599812A (en) * | 2020-12-14 | 2021-04-02 | 中国科学院大连化学物理研究所 | Novel membrane electrode sealing assembly and continuous preparation packaging equipment thereof |
-
2018
- 2018-12-31 CN CN201822265863.8U patent/CN209217132U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599812A (en) * | 2020-12-14 | 2021-04-02 | 中国科学院大连化学物理研究所 | Novel membrane electrode sealing assembly and continuous preparation packaging equipment thereof |
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