CN103904255B - Lithium ion battery case - Google Patents
Lithium ion battery case Download PDFInfo
- Publication number
- CN103904255B CN103904255B CN201410163060.5A CN201410163060A CN103904255B CN 103904255 B CN103904255 B CN 103904255B CN 201410163060 A CN201410163060 A CN 201410163060A CN 103904255 B CN103904255 B CN 103904255B
- Authority
- CN
- China
- Prior art keywords
- mouth
- shell body
- housing section
- sealed portion
- battery
- 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.)
- Expired - Fee Related
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 26
- 230000002787 reinforcement Effects 0.000 claims abstract description 42
- 238000000926 separation method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 14
- 229910052744 lithium Inorganic materials 0.000 description 14
- 238000007789 sealing Methods 0.000 description 4
- 230000008719 thickening Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of lithium ion battery case, which includes a shell body, the upper opening of the shell body, the shell body includes a mouth-sealed portion and a housing section, the mouth-sealed portion is the upper end of the shell body, the housing section is adjacent to the bottom of the mouth-sealed portion, thickness of the thickness of the mouth-sealed portion more than the housing section, the outer surface of the housing section is provided with multiple reinforcements, the reinforcement is along the longitudinally convex distribution of the housing section, a groove is formed between two adjacent reinforcements, the mouth-sealed portion, the housing section and the reinforcement are integrally formed.The heat that the present invention is produced during can enabling battery use is discharged in time, avoid battery temperature too high and affect the performance of battery performance, battery seal position can be made to have melting area enough, battery strength is allowed to be increased, it is improved can battery energy density, and reduces the production cost of battery.
Description
Technical field
The present invention relates to a kind of lithium ion battery case.
Background technology
At present, the outer surface of the housing of lithium ion battery is generally vertical plane.When multiple lithium ion batteries are made in groups
Used time, it is that saving uses space, is generally distributed by the way of multiple batteries are adjacent.Lithium ion battery in use, meeting
Larger heat is produced, due to adjacent distribution between battery so that heat can not be shed in time, thus, whole battery can be caused
Group temperature is raised, so as to affect the performance of lithium ion battery.
Additionally, existing plastic housing lithium ion battery sealing typically adopts hot plate welding mode.After sealing for guarantee, battery is strong
Degree, typically may require that increases the thickness of seal location.Due to existing lithium-ion battery shell, its surrounding consistency of thickness, this is just
Need to increase the thickness of battery container.With the increase of battery container wall thickness, battery own wt also rises therewith, but, electricity
The energy density in pond but reduces therewith.
The content of the invention
Weak heat-dissipating and lithium when the technical problem to be solved in the present invention is to overcome existing lithium ion battery to use in groups
A kind of low defect of ion battery energy density, there is provided lithium ion battery case.
The present invention is solving above-mentioned technical problem by following technical proposals：
A kind of lithium ion battery case, which includes a shell body, the upper opening of the shell body, and its feature is, described
Shell body includes a mouth-sealed portion and a housing section, and the mouth-sealed portion is the upper end of the shell body, and the housing section is adjacent to
The bottom of the mouth-sealed portion, the thickness of the mouth-sealed portion are more than the thickness of the housing section, and the outer surface of the housing section sets
There are multiple reinforcements, the reinforcement is formed between two adjacent reinforcements along the longitudinally convex distribution of the housing section
One groove, the mouth-sealed portion, the housing section and the reinforcement are integrally formed.
When lithium ion battery is used in groups, wind-cooling heat dissipating mode is typically adopted.Groove between adjacent said rib, is scattered
Heat provide vent passages so that the heat produced during battery use can be discharged in time, it is to avoid battery temperature it is too high and
Affect the performance of battery performance.The reinforcement of housing section outer surface can also increase the intensity of shell body.The thickness ratio of mouth-sealed portion
The thickness of housing section is big, it is ensured that the thickness of seal location so that have melting area enough when housing is sealed by battery cover,
Battery strength is allowed to be increased.Thickness as housing section need not be further added by, therefore so that battery energy density is improved,
And reduce the production cost of battery.
It is preferred that the internal face of the mouth-sealed portion is flushed with the internal face of the housing section, the outside wall surface of the mouth-sealed portion
Junction with the outside wall surface of the housing section is 5 °～30 ° of chamfering.So, side of the mouth-sealed portion to thicken to shell body exterior
Formula is thickened, and has both met the thickness of seal location, causes shell body easily manufactured again.Junction is chamfering structure so that sealing
Portion is connected more smooth with housing section, and then strengthens the intensity of connecting portion.
It is preferred that the outside wall surface of the mouth-sealed portion is flushed with the outside wall surface of the housing section, the internal face of the mouth-sealed portion
Junction with the internal face of the housing section is 5 °～30 ° of chamfering.So, side of the mouth-sealed portion to thicken to shell body interior
Formula is thickened, and has both met the thickness of seal location, causes shell body easily manufactured again.Junction is chamfering structure so that sealing
Portion is connected more smooth with housing section, and then strengthens the intensity of connecting portion, meanwhile, also make battery case that there is certain aesthetic property.
It is preferred that the thickness of the mouth-sealed portion 0.3～0.8mm bigger than the thickness of the housing section, the reinforcement and institute
State the gross thickness 0.2～1mm bigger than the thickness of the mouth-sealed portion of housing section.Experimental data shows that such numerical value that thickens be enough to
Meet the intensity requirement of lithium battery casing, be unlikely to the feelings for occurring to cause because thickening numerical value and being excessive battery energy density to reduce again
Shape.
It is preferred that the height of the mouth-sealed portion is 5～15mm, the width of the reinforcement is 5～20mm.Experimental data table
Bright, the height and width are sufficient for the intensity requirement of lithium battery casing, are avoided that height or width are excessive and cause battery again
The reduction of energy density.
It is preferred that the shell body is shaped as cuboid, the reinforcement of the front surface of the shell body is provided with
One hemispheric projection, the reinforcement on the rear surface of the shell body are provided with a hemispherical being adapted with the projection
Depression, it is described it is raised with it is described depression it is highly identical on the shell body, it is described raised and it is described be recessed apart from described
The transverse width of the same side of shell body is identical.So, when plural lithium battery is used in groups, lithium battery below
Raised to close with the recesses of lithium battery above, be easy to lithium battery puts positioning, also so that more compact structure, improves
The volume utilization of Battery case.
It is preferred that the raised lateral separation with the left surface of the shell body is the front surface width of the shell body
1/15～1/6, the raised distance with the shell body bottom surface is the 1/5～1/2 of the height of the shell body.Equally,
Depression is the 1/15～1/6 of the front surface width of shell body with the lateral separation of shell body left surface, is recessed and shell body bottom surface
Distance for shell body height 1/5～1/2.Experimental data shows that raised and depression is positioned at aforesaid position so that positioning is more
It is convenient.
It is preferred that the raised radius is 0.2～5mm, the radius of the depression is 0.2～5mm.Experimental data table
Bright, the size of raised and depression is aforesaid numerical value, can both avoid oversized and affect battery shell structure, and can avoid again
Effect that is undersized and being unable to reach positioning.
It is preferred that the two ends of the reinforcement are 5 °～30 ° of chamfering.The end of reinforcement adopts chamfering structure, can
To avoid damaging in carrying or assembling to user because reinforcement is excessively sharp, while also having certain attractive in appearance
Property.
The present invention positive effect be：The heat produced during battery use can be enable is discharged in time, is kept away
Exempt from battery temperature it is too high and affect battery performance performance；Battery seal position can be made to have melting area enough, make battery strong
Degree is increased；It is improved can battery energy density, and reduces the production cost of battery.
Description of the drawings
Schematic perspective views of the Fig. 1 for the embodiment of the present invention 1.
Schematic elevation views of the Fig. 2 for the embodiment of the present invention 1.
Fig. 3 is A-A cross-sectional schematics in Fig. 2.
Fig. 4 is the part B enlarged diagram in Fig. 3.
Fig. 5 is state diagram when used using the lithium battery of the embodiment of the present invention 1 in groups.
Schematic elevation views of the Fig. 6 for the embodiment of the present invention 2.
Fig. 7 is C-C cross-sectional schematics in Fig. 6.
Fig. 8 is D enlarged schematic partial views in Fig. 7.
Specific embodiment
Two preferred embodiments are named, and combines accompanying drawing to become apparent from intactly illustrating the present invention.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of lithium ion battery case, which includes shell body 1 and cap 2, shell body 1
It is shaped as cuboid, the upper opening of shell body 1, shell body 1 and cap 2 adopt hot plate welding.Shell body 1 includes mouth-sealed portion 11
With housing section 12, upper end of the mouth-sealed portion 11 for shell body 1, housing section 2 is adjacent to the bottom of mouth-sealed portion 11, mouth-sealed portion 11
Thickness of the thickness more than housing section 12, the outer surface of housing section 12 are provided with multiple reinforcements 13, and reinforcement 13 is vertical along housing section 12
To raised distribution, between two adjacent reinforcements 13, form groove, mouth-sealed portion 11, housing section 12 and 13 one of reinforcement into
Type.
The outer surface of mouth-sealed portion is the flat surface structure without reinforcement, and the internal face of mouth-sealed portion 11 is interior with housing section 12
Wall is flushed, and the outside wall surface of mouth-sealed portion 11 is 10 ° of chamferings with the junction of the outside wall surface of housing section 12.The two ends of reinforcement 13 are equal
For 5 ° of chamferings.11 thickness of mouth-sealed portion is 5.5mm, and 12 thickness of housing section is 5.2mm, and the thickness of mouth-sealed portion 11 is thicker than housing section 12
Spend big 0.3mm.13 thickness of reinforcement is 0.8mm, and reinforcement 13 is bigger than the thickness of mouth-sealed portion 11 with the gross thickness of housing section 12
0.5mm.The height of mouth-sealed portion 11 is 10mm, and the width of reinforcement 13 is 10mm.
When lithium ion battery is used in groups, wind-cooling heat dissipating mode is typically adopted.Groove between adjacent said rib, is radiating
There is provided vent passages so that the heat produced during battery use can be discharged in time, it is to avoid battery temperature is too high and shadow
Ring the performance of battery performance.
The reinforcement of housing section outer surface can also increase the intensity of shell body.Thickness of the thickness of mouth-sealed portion than housing section
Greatly, it is ensured that the thickness of seal location so that have melting area enough when housing is sealed by battery cover, allow battery strength to obtain
To increase.Thickness as housing section need not be further added by, therefore so that battery energy density is improved, and reduces battery
Production cost.
Mouth-sealed portion is thickened in the way of thickening to shell body exterior, has both met the thickness of seal location, causes shell sheet again
Body is easily manufactured.Junction is chamfering structure so that mouth-sealed portion is connected more smooth with housing section, and then strengthens the strong of connecting portion
Degree.Meanwhile, also make battery case that there is certain aesthetic property.The end of reinforcement adopts chamfering structure, can avoid because of reinforcement
It is excessively sharp and damage in carrying or assembling to user, while also having certain aesthetic property.
The reinforcement 13 of the front surface of shell body 1 is provided with one hemispheric raised 14, the reinforcement on the rear surface of shell body 1
Muscle 13 is provided with and the raised 14 hemispheric depressions (not showing on figure) being adapted.Projection 14 is with depression on shell body 1
Highly identical, it is the 1/6 of the front surface width of shell body to be with the lateral separation of the left surface of shell body 1；Raised 14 and recessed
The sunken distance apart from 1 bottom surface of shell body is the 1/2 of the height of shell body 1.Raised 14 spherical radius are 1.5mm, depression
Spherical radius are 1.5mm.On this basis, a depression 15 can be set again, in shell on the reinforcement of the front surface of shell body
One projection (not showing on figure) being adapted with the depression 15 is set on the reinforcement on the rear surface of body again.As shown in figure 5, working as
When plural lithium battery 20 is used in groups, the projection of lithium battery below can be with the recesses of lithium battery above
Close, behind the depression of lithium battery can be engaged with the projection of above lithium battery.So, be easy to lithium battery puts positioning, also
So that more compact structure, improves the volume utilization of Battery case.
The heat that lithium ion battery case of the present invention is produced during can enabling battery use is discharged in time, it is to avoid battery temperature
Spend height and affect the performance of battery performance；Battery seal position can be made to have melting area enough, allow battery strength to be increased
Plus；It is improved can battery energy density, and reduces the production cost of battery.
Embodiment 2
As shown in Fig. 6, Fig. 7 and Fig. 8, compared with Example 1, difference is the lithium ion battery case of the present embodiment：
The outside wall surface of mouth-sealed portion 11 is flushed with the outside wall surface of housing section 12, the company of the internal face of mouth-sealed portion 11 and the internal face of housing section 12
Place is met for 10 ° of chamferings, the two ends of reinforcement 13 are 10 ° of chamferings, raised 14 spherical radius are 1mm, the spherical radius of depression
For 1mm.In addition, the other structures of the present embodiment and 1 all same of embodiment, here are just repeated no more.
So, mouth-sealed portion is thickened in the way of thickening to shell body interior, has both met the thickness of seal location, is caused again
Shell body is easily manufactured.Junction is chamfering structure so that mouth-sealed portion is connected more smooth with housing section, and then strengthens connecting portion
Intensity, meanwhile, also make battery case that there is certain aesthetic property.The size of raised and depression is aforementioned value, can both be avoided
It is oversized and affect battery shell structure, effect that is undersized and being unable to reach positioning can be avoided again.
Additionally, other beneficial effects of the present embodiment are same as Example 1, here is just repeated no more.
Although the foregoing describing the specific embodiment of the present invention, it will be appreciated by those of skill in the art that this is only
It is to illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art without departing substantially from
On the premise of the principle and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes and
Modification each falls within protection scope of the present invention.
Claims (8)
1. a kind of lithium ion battery case, which includes a shell body, the upper opening of the shell body, it is characterised in that the shell
Body includes a mouth-sealed portion and a housing section, and the mouth-sealed portion is the upper end of the shell body, and the housing section is adjacent to institute
The bottom of mouth-sealed portion is stated, the thickness of the mouth-sealed portion is more than the thickness of the housing section, and the outer surface of the housing section is provided with
Multiple reinforcements, the reinforcement form one between two adjacent reinforcements along the longitudinally convex distribution of the housing section
Groove, the mouth-sealed portion, the housing section and the reinforcement are integrally formed；The shell body is shaped as cuboid, described
The reinforcement of the front surface of shell body is provided with a hemispheric projection, the reinforcement on the rear surface of the shell body
It is provided with a hemispheric depression being adapted with the projection, the raised height with the depression on the shell body
Identical, the raised transverse width with the depression apart from the same side of the shell body is identical.
2. lithium ion battery case as claimed in claim 1, it is characterised in that the internal face of the mouth-sealed portion and the housing section
Internal face flush, the junction of the outside wall surface of the mouth-sealed portion and the outside wall surface of the housing section is 5 °～30 ° of chamfering.
3. lithium ion battery case as claimed in claim 1, it is characterised in that the outside wall surface of the mouth-sealed portion and the housing section
Outside wall surface flush, the junction of the internal face of the mouth-sealed portion and the internal face of the housing section is 5 °～30 ° of chamfering.
4. lithium ion battery case as claimed in claim 1, it is characterised in that the thickness of the mouth-sealed portion is than the housing section
Big 0.3～the 0.8mm of thickness, the reinforcement 0.2～1mm bigger than the thickness of the mouth-sealed portion with the gross thickness of the housing section.
5. lithium ion battery case as claimed in claim 4, it is characterised in that the height of the mouth-sealed portion is 5～15mm, described
The width of reinforcement is 5～20mm.
6. lithium ion battery case as claimed in claim 1, it is characterised in that described raised with the left surface of the shell body
Lateral separation is the 1/15～1/6 of the front surface width of the shell body, and the raised distance with the shell body bottom surface is
The 1/5～1/2 of the height of the shell body.
7. lithium ion battery case as claimed in claim 6, it is characterised in that the raised radius is 0.2～5mm, described
The radius of depression is 0.2～5mm.
8. lithium ion battery case as claimed in claim 1, it is characterised in that the two ends of the reinforcement are 5 °～30 °
Chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163060.5A CN103904255B (en) | 2014-04-22 | 2014-04-22 | Lithium ion battery case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163060.5A CN103904255B (en) | 2014-04-22 | 2014-04-22 | Lithium ion battery case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103904255A CN103904255A (en) | 2014-07-02 |
| CN103904255B true CN103904255B (en) | 2017-03-29 |
Family
ID=50995487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410163060.5A Expired - Fee Related CN103904255B (en) | 2014-04-22 | 2014-04-22 | Lithium ion battery case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103904255B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157801A (en) * | 2014-08-11 | 2014-11-19 | 青岛大学 | Battery case with self-positioning and heat exchange enhancing functions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1753205A (en) * | 2004-09-21 | 2006-03-29 | 三星Sdi株式会社 | Secondary battery and secondary battery module with secondary battery |
| CN201146203Y (en) * | 2008-01-09 | 2008-11-05 | 比亚迪股份有限公司 | Battery cover plate and battery |
| CN201608210U (en) * | 2009-12-21 | 2010-10-13 | 潍坊威能环保电源有限公司 | Lithium-ion battery shell |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009224072A (en) * | 2008-03-13 | 2009-10-01 | Sanyo Electric Co Ltd | Pack battery |
| CN102760909B (en) * | 2012-07-17 | 2015-02-04 | 李永康 | Power battery and manufacturing method thereof |
-
2014
- 2014-04-22 CN CN201410163060.5A patent/CN103904255B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1753205A (en) * | 2004-09-21 | 2006-03-29 | 三星Sdi株式会社 | Secondary battery and secondary battery module with secondary battery |
| CN201146203Y (en) * | 2008-01-09 | 2008-11-05 | 比亚迪股份有限公司 | Battery cover plate and battery |
| CN201608210U (en) * | 2009-12-21 | 2010-10-13 | 潍坊威能环保电源有限公司 | Lithium-ion battery shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103904255A (en) | 2014-07-02 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191227 Address after: 300480 No. 20 North Mount Huangshan Road, Tianjin Binhai New Area, Hangu, China Patentee after: Sinopoly Battery Ltd. Address before: 300450 No. 20 North Mount Huangshan Road, Tianjin Binhai New Area, Hangu, China Patentee before: TIANJIN SINOPOLY NEW ENERGY TECHNOLOGY CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20200422 |