CN115224407A - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN115224407A CN115224407A CN202210360906.9A CN202210360906A CN115224407A CN 115224407 A CN115224407 A CN 115224407A CN 202210360906 A CN202210360906 A CN 202210360906A CN 115224407 A CN115224407 A CN 115224407A
- Authority
- CN
- China
- Prior art keywords
- flange
- case
- main body
- lower case
- secondary 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 239000011324 bead Substances 0.000 claims abstract description 16
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
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
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present disclosure provides a battery pack in which a sealing portion is easily unsealed during maintenance. The battery pack includes a secondary battery, a lower case, an upper case, and a sealing member sealing between the lower case and the upper case. The lower case includes a lower case main body receiving the secondary battery from below and a lower flange outwardly protruding from an edge portion of the lower case main body. The upper case includes: an upper case body accommodating the secondary battery together with the lower case body; and an upper flange outwardly protruding from an edge portion of the upper case main body and facing the lower flange in the up-down direction. The upper flange has: an overlapping portion that overlaps the lower flange in the up-down direction; and a protruding portion connected to the overlapping portion and protruding outward from the lower flange. An upper bead having a shape extending in an orthogonal direction orthogonal to both the vertical direction and the direction in which the upper flange projects from the upper case main body is provided at the overlapping portion. The sealing member seals between the lower flange and the upper flange.
Description
Technical Field
The present disclosure relates to a battery pack.
Background
A battery pack mounted on a vehicle or the like is known. For example, japanese patent No. 5977374 discloses a battery case including a lower case and an upper case. Flanges are formed on the outer edge of the lower case and the outer edge of the upper case. The flanges face each other with a gap therebetween, and a seal is provided between the flanges.
In the battery case described in japanese patent No. 5977374, for example, when smoke is emitted from the secondary battery, the seal may soften to cause the battery case to communicate with the outside of the battery case.
Therefore, it is conceivable to provide a fastening portion in each flange and fasten the fastening portion by a fastening member.
However, with such a structure, a portion of the seal located inside the fastening portion cannot be accessed, and therefore, it is difficult to open the seal portion at the time of maintenance.
Disclosure of Invention
Problems to be solved by the invention
The present disclosure provides a battery pack in which a sealing portion can be easily unsealed during maintenance.
A battery pack according to an aspect of the present disclosure includes a secondary battery, a lower case having a shape that opens upward, an upper case, and a sealing member that seals between the lower case and the upper case. The lower case includes a lower case main body receiving the secondary battery from below and a lower flange outwardly protruding from a rim portion of the lower case main body. The upper case has a shape that closes the opening of the lower case, and houses the secondary battery together with the lower case. The upper case includes: an upper case main body accommodating the secondary battery together with the lower case main body; and an upper flange outwardly extending from an edge portion of the upper case main body and facing the lower flange in the up-down direction. The upper flange has: an overlapping portion that overlaps with the lower flange in the up-down direction; and a protruding portion connected to the overlapping portion and protruding outward from the lower flange. An upper bead is provided in the overlapping portion, and the upper bead has a shape extending in an orthogonal direction orthogonal to both a vertical direction and a direction in which the upper flange protrudes from the upper case main body. The sealing member seals between the lower flange and the upper flange.
According to the present disclosure, it is possible to provide a battery pack in which the seal portion can be easily unsealed during maintenance.
Drawings
The features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be explained below with reference to the accompanying drawings, in which like reference numerals indicate like parts, and wherein:
fig. 1 is a perspective view schematically showing the structure of a battery pack according to an embodiment of the present disclosure.
Fig. 2 is an enlarged perspective view of an upper flange and a lower flange in the battery pack shown in fig. 1.
Fig. 3 is a top view of the upper and lower flanges.
Fig. 4 is a bottom view of the upper and lower flanges.
Fig. 5 is a side view of the upper and lower flanges.
Fig. 6 is a sectional view taken along line VI-VI in fig. 3 and 4.
Fig. 7 is a sectional view schematically showing a state where a part of the upper flange is turned up.
Detailed Description
Embodiments of the present disclosure are explained with reference to the drawings. In the drawings referred to below, the same or corresponding members are denoted by the same reference numerals.
Fig. 1 is a perspective view schematically showing the structure of a battery pack according to an embodiment of the present disclosure. Fig. 2 is an enlarged perspective view of an upper flange and a lower flange in the battery pack shown in fig. 1. Fig. 3 is a top view of the upper and lower flanges. Fig. 4 is a bottom view of the upper and lower flanges. Fig. 5 is a side view of the upper and lower flanges. Fig. 6 is a sectional view taken along line VI-VI in fig. 3 and 4. The battery pack 1 is mounted on a vehicle, for example. The posture of mounting the battery pack 1 on a vehicle is not limited.
As shown in fig. 1 and 6, the battery pack 1 includes at least one secondary battery 10, a lower case 100, an upper case 200, and a sealing member 300.
In the present embodiment, the battery pack 1 includes a plurality of secondary batteries 10. In addition, the number of the secondary batteries 10 is not particularly limited. The secondary batteries 10 are arranged so as to face each other. Each secondary battery 10 is, for example, a lithium ion battery.
The lower case 100 has a shape opened upward. The lower case 100 is made of metal. The lower case 100 has a lower case body 110 and a lower flange 120.
The lower case body 110 has a shape that receives the secondary battery 10 from below. The lower case main body 110 has a bottom wall formed in a rectangular shape and supporting the secondary battery 10, and a lower side peripheral wall rising from an edge of the bottom wall and surrounding the secondary battery 10.
The lower flange 120 has a shape protruding outward from an edge portion (an upper end portion of the lower side peripheral wall) of the lower case body 110. Details of the lower flange 120 will be described later.
The upper case 200 has a shape that closes the opening of the lower case 100, and houses the secondary battery 10 together with the lower case 100. The upper case 200 is made of metal. The upper case 200 has an upper case body 210 and an upper flange 220.
The upper case body 210 houses the secondary battery 10 together with the lower case body 110. The upper case body 210 has a top wall formed in a rectangular shape and disposed above the secondary battery 10, and an upper peripheral wall extending downward from an edge of the top wall and surrounding the secondary battery 10.
The upper flange 220 extends outward from the edge portion (lower end portion of the upper side peripheral wall) of the upper case main body 210, and faces the lower flange 120 in the up-down direction. Details of the upper flange 220 will be described later.
The sealing member 300 seals between the lower case 100 and the upper case 200. In more detail, the sealing member 300 seals between the lower flange 120 and the upper flange 220.
Here, the lower flange 120 and the upper flange 220 will be explained.
The lower flange 120 has a shape of being annularly connected. The lower flange 120 has a receiving portion 122 and a lower extension portion 124.
The receiving portion 122 is a portion that receives the sealing member 300. The receiving portion 122 may be formed flat.
The lower extension 124 extends outwardly from the socket 122. As shown in fig. 6, the lower protruding portion 124 is located above the receiving portion 122. That is, a step is formed between the receiving portion 122 and the lower protruding portion 124.
As shown in fig. 4, the lower protruding portion 124 is formed with an insertion hole 124h for inserting a fastening member such as a bolt and a lower bead 125 having a shape extending parallel to a direction in which the lower flange 120 protrudes from the lower case body 110 (a direction orthogonal to the longitudinal direction of the lower flange 120). A pair of lower ribs 125 are formed on the lower extension 124 at positions separated by the insertion holes 124 h. As shown in fig. 5, the lower reinforcing bead 125 has a shape curved in a downwardly convex manner.
The upper flange 220 has a shape of being annularly connected. The upper flange 220 has an overlapping portion 221 and a protruding portion 226.
The overlapping portion 221 is a portion overlapping the lower flange 120 in the vertical direction. The overlapping portion 221 includes a pressing portion 222 and an upper protruding portion 224.
The pressing portion 222 is a portion that presses the sealing member 300 toward the receiving portion 122. The pressing portion 222 may be formed flat. The pressing portion 222 is spaced upward from the receiving portion 122. A seal member 300 is provided between the pressing portion 222 and the receiving portion 122.
The upper side projecting portion 224 projects outward (leftward in fig. 6) from the pressing portion 222. The upper extension 224 contacts the lower extension 124. As shown in fig. 6, the upper protruding portion 224 is located below the pressing portion 222. That is, a step is formed between the pressing portion 222 and the upper protruding portion 224. As shown in fig. 2 and 3, an insertion hole 224h for inserting the fastening member is formed in the upper protruding portion 224. The upper protruding portion 224 and the lower protruding portion 124 are fastened by fastening members inserted through the insertion holes 124h and 224h.
The overlapping portion 221 is formed with an upper rib 225. The upper bead 225 has a shape extending in a direction orthogonal to both the vertical direction and the direction in which the upper flange 220 projects from the upper case main body 210 (a direction orthogonal to the paper surface in fig. 6). The upper rib 225 is formed at the boundary between the pressing portion 222 and the upper protruding portion 224.
The protruding portion 226 is connected to the overlapping portion 221. As shown in fig. 4 and 6, the protruding portion 226 protrudes outward from the lower flange 120.
Next, a maintenance operation of the battery pack 1 (an operation of detaching the upper case 200) will be described. In maintenance of the battery pack 1, after the fastening member that fastens the lower protruding portion 124 and the upper protruding portion 224 to each other is removed, the portions (the upper protruding portion 224 and the protruding portion 226) of the upper flange 220 that are outside the upper bead 225 are raised to the open position (the position indicated by the solid line in fig. 7) with respect to the lower flange 120 while the protruding portion 226 is gripped with a tool or the like. Thus, the sealing member 300 is exposed. The upper case 200 can be detached from the lower case 100 by unsealing by cutting the sealing member 300 or the like.
As described above, in the battery pack 1 of the present embodiment, since the upper flange 220 has the protruding portion 226 and the upper bead 225 is formed in the overlapping portion 221 of the upper flange 220, the sealing member 300 can be exposed by turning up the portion of the upper flange 220 outside the upper bead 225 with respect to the lower flange 120. Therefore, when the battery pack 1 is maintained, the sealing member 300 exposed by the above operation is unsealed, so that maintenance (removal of the upper case 200) can be easily performed.
Those skilled in the art will appreciate that the above-described exemplary embodiments are specific examples in the following manner.
The battery pack according to the above embodiment includes a secondary battery, a lower case having a shape that opens upward, an upper case having a shape that closes the opening of the lower case and accommodating the secondary battery together with the lower case, and a sealing member that seals between the lower case and the upper case, the lower case having a lower case main body that receives the secondary battery from below and a lower flange that extends outward from an edge portion of the lower case main body, the upper case having an upper case main body that accommodates the secondary battery together with the lower case main body and an upper flange that extends outward from an edge portion of the upper case main body and faces the lower flange in the vertical direction, the sealing member sealing between the lower flange and the upper flange, the upper flange having an overlapping portion that overlaps the lower flange in the vertical direction and a protruding portion that protrudes outward from the overlapping portion and the lower flange, an upper reinforcing rib being formed at the overlapping portion, the upper reinforcing rib having a shape that extends upward in two directions orthogonal to the vertical direction and to a direction in which the upper flange protrudes from the upper case main body.
In this battery pack, since the upper flange has the protruding portion and the upper bead is formed in the overlapping portion of the upper flange, the sealing member can be exposed by turning up a portion of the upper flange on the outer side of the upper bead with respect to the lower flange while gripping the protruding portion with a tool or the like. Therefore, when the battery pack is maintained, the sealing member exposed by the above operation is unsealed, so that the maintenance can be easily performed.
In addition, it is preferable that the lower flange has a receiving portion that receives the seal member and a lower protruding portion that protrudes outward from the receiving portion, the overlapping portion has a pressing portion that presses the seal member toward the receiving portion and an upper protruding portion that protrudes outward from the pressing portion and contacts the lower protruding portion, and the upper bead is formed at a boundary between the pressing portion and the upper protruding portion.
In this aspect, the lower protruding portion and the upper protruding portion can be fastened.
Preferably, a lower bead is formed in the lower protruding portion, and the lower bead has a shape extending parallel to a direction in which the lower flange protrudes from the lower case main body.
The embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. The scope of the present invention is defined by the claims, not by the description of the above embodiments, and includes all modifications equivalent in meaning and scope to the claims.
Claims (1)
1. A battery pack, comprising:
a secondary battery;
a lower case having a shape opened upward, the lower case including a lower case main body receiving the secondary battery from below and a lower flange outwardly protruding from an edge portion of the lower case main body;
an upper case having a shape closing an opening of the lower case and housing the secondary battery together with the lower case, the upper case including: an upper case main body accommodating the secondary battery together with the lower case main body; and an upper flange outwardly extending from an edge portion of the upper case main body and facing the lower flange in the up-down direction, the upper flange having: an overlapping portion that overlaps with the lower flange in the up-down direction; and a protruding portion that is continuous with the overlapping portion and protrudes outward beyond the lower flange, an upper bead being provided on the overlapping portion, the upper bead having a shape that extends in an orthogonal direction orthogonal to both a vertical direction and a direction in which the upper flange protrudes from the upper case main body; and
a sealing member sealing between the lower case and the upper case, the sealing member sealing between the lower flange and the upper flange.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021071369A JP2022165836A (en) | 2021-04-20 | 2021-04-20 | battery pack |
| JP2021-071369 | 2021-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115224407A true CN115224407A (en) | 2022-10-21 |
Family
ID=83606778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210360906.9A Pending CN115224407A (en) | 2021-04-20 | 2022-04-07 | Battery pack |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2022165836A (en) |
| CN (1) | CN115224407A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311745A (en) * | 1998-06-25 | 2001-09-05 | S·C·约翰逊家贮公司 | Container with lid having interrupted reinforcement bead |
| US20070181452A1 (en) * | 2006-01-30 | 2007-08-09 | Fujifilm Corporation | Cartridge accommodating case |
| CN102473873A (en) * | 2009-07-16 | 2012-05-23 | 日产自动车株式会社 | Battery pack |
| CN104919620A (en) * | 2013-01-11 | 2015-09-16 | 双叶产业株式会社 | Battery case |
| JP2015202697A (en) * | 2014-04-10 | 2015-11-16 | 本田技研工業株式会社 | Electric device storage body |
| CN209626288U (en) * | 2019-04-24 | 2019-11-12 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of battery pack and its shell, upper housing |
| CN210006800U (en) * | 2019-07-24 | 2020-01-31 | 蜂巢能源科技有限公司 | A casing, battery package and vehicle for battery package |
| CN111883701A (en) * | 2019-05-03 | 2020-11-03 | 马勒国际有限公司 | Battery housing for a battery system for driving a vehicle |
-
2021
- 2021-04-20 JP JP2021071369A patent/JP2022165836A/en active Pending
-
2022
- 2022-04-07 CN CN202210360906.9A patent/CN115224407A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311745A (en) * | 1998-06-25 | 2001-09-05 | S·C·约翰逊家贮公司 | Container with lid having interrupted reinforcement bead |
| US20070181452A1 (en) * | 2006-01-30 | 2007-08-09 | Fujifilm Corporation | Cartridge accommodating case |
| CN102473873A (en) * | 2009-07-16 | 2012-05-23 | 日产自动车株式会社 | Battery pack |
| CN104919620A (en) * | 2013-01-11 | 2015-09-16 | 双叶产业株式会社 | Battery case |
| JP2015202697A (en) * | 2014-04-10 | 2015-11-16 | 本田技研工業株式会社 | Electric device storage body |
| CN209626288U (en) * | 2019-04-24 | 2019-11-12 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of battery pack and its shell, upper housing |
| CN111883701A (en) * | 2019-05-03 | 2020-11-03 | 马勒国际有限公司 | Battery housing for a battery system for driving a vehicle |
| CN210006800U (en) * | 2019-07-24 | 2020-01-31 | 蜂巢能源科技有限公司 | A casing, battery package and vehicle for battery package |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022165836A (en) | 2022-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102035103B (en) | Terminal box | |
| JP5919777B2 (en) | Electricity storage element | |
| JPH0955197A (en) | Safety device for secondary battery | |
| JP5516491B2 (en) | Vehicle housing mounting structure | |
| TWI416834B (en) | Terminal box | |
| US8293400B2 (en) | Battery including opening closure member with case contact part and case inside part | |
| JP2019133828A (en) | Wire cover and connector | |
| JPH1092508A (en) | Combined connector | |
| WO2017006495A1 (en) | Wire housing protector | |
| JP5048652B2 (en) | Storage battery | |
| CN115224407A (en) | Battery pack | |
| CN104821387A (en) | Secondary battery and method for producing secondary battery | |
| JP2007165191A (en) | Connector | |
| JPH1040895A (en) | Handhold for storage battery | |
| JPH11299053A (en) | Electrical connection box | |
| JP4501765B2 (en) | Movable storage pocket | |
| JP5206576B2 (en) | Electrical junction box | |
| JP4059144B2 (en) | Wire harness protector | |
| CN208904812U (en) | Brush holder assembly | |
| JPH08140241A (en) | Holding structure of corrugated tube | |
| JP3768114B2 (en) | Compressor electrical components | |
| JPH0897568A (en) | Dry cell housing structure | |
| CN221081738U (en) | Capping assembly and controller | |
| CN213184502U (en) | Explosion-proof sheet for square battery, cover plate with explosion-proof sheet and square battery | |
| CN213035766U (en) | Fuse box of vehicle and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |