GB2504094A - Housing Structure for holding a plurality of soft package secondary battery cells - Google Patents

Housing Structure for holding a plurality of soft package secondary battery cells Download PDF

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Publication number
GB2504094A
GB2504094A GB1212664.5A GB201212664A GB2504094A GB 2504094 A GB2504094 A GB 2504094A GB 201212664 A GB201212664 A GB 201212664A GB 2504094 A GB2504094 A GB 2504094A
Authority
GB
United Kingdom
Prior art keywords
soft
secondary battery
battery cells
package
housing structure
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.)
Withdrawn
Application number
GB1212664.5A
Other versions
GB201212664D0 (en
Inventor
Donald Pi Hsiang Wu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Energy Control Ltd
Original Assignee
Energy Control Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Energy Control Ltd filed Critical Energy Control Ltd
Priority to GB1212664.5A priority Critical patent/GB2504094A/en
Publication of GB201212664D0 publication Critical patent/GB201212664D0/en
Publication of GB2504094A publication Critical patent/GB2504094A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/578—Devices or arrangements for the interruption of current in response to pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/20—Pressure-sensitive devices
    • 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)
  • Battery Mounting, Suspending (AREA)

Abstract

A housing structure 40 for holding a plurality of soft-package battery cells includes at least one divider 423 which is formed a plurality of first pointed projections located a distance away from the soft-package battery cells. When one of the soft-package secondary battery cells fails and is inflated, the failed soft-package secondary battery cell will be pierced by the pointed projections, so as to release the inner pressure of the failed soft-package secondary battery cell. Hence, when one of the soft-package secondary battery cells fails, the rest good soft package secondary battery cells won't be affected, thus improving the safety of battery pack.

Description

HOUSING STRUCTURE FOR HOLDING A PLURALITY OF
SOFT-PACKAGE SECONDARY BATTERY CELLS
BACKGROUND OF THE P4VENTTON
Field of the Invention
The present invention relates to a housing structure for a battery, and more particularly to a housing structure for holding a plurality of soft-package secondary battery cells.
Description of the Prior Art
The existing batteries are mostly provided with a great number of single secondary battery cells which are connected in series or parallel in order to have a high output capacity.
As shown hi Fig. 1, a conventional battery pack 10 comprises a housing 11 formed with a chamber Ill for holding a plurality of soft-package secondary battery cells 12. Each of the soft-package secondary battery cells 12 includes a positive terminal 121 and a negative terminal 122. The positive terminals 121 are electrically coirnected by a positive conductive bar 13 which is used as a positive output electrode of the whole battery pack 10, and the negative terminals 122 are electrically connected by a negative conductive bar 14 which serves as a negative output electrode of the whole battery pack 10.
When a fault, like short circuit, occurs on the soft-package secondary battery cells 12, it will cause inflation of the soft-package secondary battery cells 12.
Therefore, each of the soft-package secondary battery cells 12 is designed to have two opposed deformation surfaces 123 to release internal pressure of the battery cells when inflation occurs. For example, as shown in Fig. 2, when one of the soft-package secondary battery cells 12 densely arranged iii the housing Ii fails and inflates, the inflated deformation surfaces 123 will press against and cause damage to the neighboring soft-package secondary battery cells 12, and consequently affecting safety of tile whole battery pack 10.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide a housing structure for holding a plurality of soft-package secondary battery cells, when one of the soft-package secondary battery cells fails, the rest good soft-package secondary battery cells won't be atrected, thus improving the safety of battery pack.
To achieve the above object, a housing structure for holding a plurality of soft-package secondary battery cells is provided in accordance with the present invention, each of the soft-package secondary battery cells comprising two opposed deformation surfaces, the housing structure comprising a chamber for holding the plurality of soft-package secondary battery cells, and the chamber being formed with at least one divider, the divider including a first surface against which the deformation surface of one of the soft-package secondary battery cells rests, and an opposite second surface against which the deformation surface of a neighboring soft-package secondary battery cell rests, a first concave formed in the first surface, a plurality of first pointed projections which are formed at a bottom of the first concave and located a distance away from the deformation surface and used to piece the defonnation surface, a second concave formed in the second surface, a plurality of second pointed projections which are formed at a bottom of the second concave and located a distance away from the deformation surface and used to piece tile deformation surthce.
Preferably, the first pointed projections are located within the first concave, and the second pointed projections are located within the second concave.
Preferably, the first pointed projections extend from the bottom of the first concave toward the first surface, and the second pointed projections extend from the bottom of the second concave toward the second surface.
Preferably, the first and second pointed projections are circular conical structures.
Preferably, each of the first and second pointed projections is an angular conical structure which is formed with grooves around a periphery thereof
BRIEF DESCRIPTION OF THE DRAWiNGS
Fig. 1 is a perspective view of a conventional housing structure for holding a plurality of soft-package battery cells; Fig. 2 shows that one of the soft-package battery cells held in the housing structure of Fig. 1; Fig. 3 is an exploded view of a housing structure for holding a plurality of soft-package battery cells in accordance with a first embodiment of the present invention; Fig. 4 is a perspective assembly view of Fig. 3; Fig. 5 is a top view showing the housing structure for holding a plurality of soft-package battery cells in accordance with the first embodiment of the present invention, wherein the soft-package battery cells don't inflate; Fig. 6 is a top view showing the housing structure for holding a plurality of soft-package battery cells in accordance with the first embodiment of the present invention, wherein one of the soft-package battery cells is inflated; Fig. 7 is perspective view showing another embodiment of the divider of the housing structure for holding a plurality of soft-package battery cells in accordance with the present invention; and Fig. 8 is a top view showing the housing structure for holding a plurality of soft-package battery cells in accordance with a second embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment hi accordance with the present invention.
Referring to Figs. 3-5, a housing structure 40 for holding a plurality of soft-package secondary battery cells 20 in accordance with a first embodiment of the present invention is shown, wherein each of the soft-package secondary battery cells 20 comprises two opposed defonnation surfaces 21, a positive terminal 22 and a negative terminal 23. All the positive terminals 22 are electrically connected by a positive conductive bar 3 I which serves as a positive output electrode, and all the negative terminals 23 are electrically connected by a negative conductive bar 32 which serves as a negative output electrode.
The housing structure 40 includes a chamber 41 for holding the plurality of soft-package secondary battery cells 20, and tile chamber 41 is formed with three equidistantly-arranged dividers 42. Each of the dividers 42 includes a first surface 421 against which the deformation surface 21 of one of the soft-package secondary battery cells 20 rests, and an opposite second surface 422 against which the deformation surface 21 of a neighboring soft-package secondary battery cell 20 rests, a first concave 423 formed hi the first surface 421, a plurality of first pointed projections 424 which are formed at a bottom 4231 of the first concave 423 and located a distance Li away from the deformation surface 21 and used to piece the deformation surface 21, a second concave 425 formed in the second surface 422, a plurality of second pointed projections 426 which are formed at a bottom 4251 of the second concave 425 and located a distance L2 away from the deformation surface 2 I and used to piece the deformation surface 2!. The first pointed projections 424 in this embodiment are circular conical structures and located inside the first concave 423 (namely, the ends of the first pointed projections 424 are not projected out of the edge of the first surface 421), and the first pointed projections 424 extend from the bottom 423 1 of the first concave 423 toward the first surface 421. The second pointed projections 426 in this embodiment are conical shaped aiid located inside the second concave 425 (namely, the ends of the second pointed projections 426 are not projected out of the edge of the second surface 422), and the second pointed projections 426 extend from the bottom 4251 of the second concave 425 toward the second surface 422.
Referring then to Fig. 5, in normal conditions, the soft-package secondary battery cells 20 don't inflate and their deformation surfaces 21 are not deformed. At this moment, a periphery edge 211 of the deformation surface 21 of the soft-package secondary battery cells 20 is abutted against the first surthce 421 or the second surface 422 of tile respective dividers 42, and a portion 212 of the deformation surface 21 that is located within the periphery edge 211 of the deformation surface 21 is located a distance Ll or L2 from the first pointed projections 424 or the second pointed projections 426.
As shown in Fig. 6, when one of the soft-package secondary battery cells 20 fails (such as short circuit) and inflates, the deformation surface 21 of the failed soft-package secondary battery cell 20 will deform. At this moment, the periphery edge 211 of the deformation surface 21 of the failed soft-package secondary battery cell 20 is restricted by the first surface 421 or the second surface 422 of the respective dividers 42, however, the portion 2 I 2 within the periphery edge 2 II of the deformation surface 21 will inflate. When the inflation reach a predetermined level, the defonnation surface 21 of the failed soft-package secondary battery cell 20 will be in contact with and pierced by the first pointed projections 424 or the second pointed projections 426, so as to release the inner pressure of the failed soft-package secondary battery cell 20.
Hence, when one of the soft-package secondary battery cells 20 fails, the rest good soft-package secondary battery cells 20 won't be affected, thus improving the safety of battery pack.
Referring then to Fig. 7, another embodiment of the divider 42 is shown, wherein each of the first pointed projections 427 or the second pointed projections (not shown) of the divider 42 is an angular conical structure which is formed with grooves 4271 around a periphery thereof to improve the structural strength of tile first pointed projections 427.
Referring to Fig. 8, a housing structure 40A for holding a plurality of soft-package secondary battery cells 20 in accordance with a second enibodinient of the present invention is shown, wherein a divider 42A is disposed in the chamber 41A of the housing structure 40A to divide the chamber 4lA into two halves, and the divider 42A is also provided with a first surface 42 IA, a second surface 422A, a first concave 423A, a plurality of first pointed projections 424A, a second concave 425A, and a plurality of second pointed projections 426A.
While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that fttrther embodiments may be niade without departing from the scope of the present invention.

Claims (6)

  1. WHAT IS CLAIMED 15: 1. A housing structure for holding a plurality of soft-package secondary battery cells, each of the soft-package secondary battery cells comprising two opposed deformation surfaces, the housing structure comprising a chamber for holding the plurality of soft-package secondary battery cells, and the chamber being formed with at least one divider, the divider including a first surtiice against which the deformation surface of one of the soft-package secondary battery cells rests, and an opposite second surface against which the deformation surface of a neighboring soft-package secondary battery cell rests, a first concave formed in the first surface, a plurality of first pointed projections which are formed at a bottom of the first concave and located a distance away from the deformation surface and used to piece the deformation surface, a second concave formed in the second surface, a plurality of second pointed projections which are formed at a bottom of the second concave and located a distance away from the deforniation surface and used to piece the deformation surthce.
  2. 2. The housing structure for holding the plurality of soft-package secondary battery cells as claimed in claim 1, wherein the first pointed projections are located within the first concave, and the second pointed projections are located within the second concave.
  3. 3. The housing structure for holding the plurality of soft-package secondary battery cells as claimed in claim I, wherein the first pointed projections extend from the bottom of the first concave toward the first surface, and the second pointed projections extend from the bottom of the second concave toward the secondSsurface.
  4. 4. The housing structure for holding the plurality of soft-package secondary battery cells as claimed in claim 1, wherein the first and second pointed projections are circular conical structures.
  5. 5. The housing structure for holding the plurality of soft-package secondary battery cells as claimed in claim I, wherein each of the first and second pointed projections is an angular conical structure which is formed with grooves around a periphery thereof
  6. 6. A housing structure substantially as hereinbefore described with reference to and as shown in Figures 3 to 8 of the accompanying drawings.
GB1212664.5A 2012-07-17 2012-07-17 Housing Structure for holding a plurality of soft package secondary battery cells Withdrawn GB2504094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1212664.5A GB2504094A (en) 2012-07-17 2012-07-17 Housing Structure for holding a plurality of soft package secondary battery cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1212664.5A GB2504094A (en) 2012-07-17 2012-07-17 Housing Structure for holding a plurality of soft package secondary battery cells

Publications (2)

Publication Number Publication Date
GB201212664D0 GB201212664D0 (en) 2012-08-29
GB2504094A true GB2504094A (en) 2014-01-22

Family

ID=46799717

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GB1212664.5A Withdrawn GB2504094A (en) 2012-07-17 2012-07-17 Housing Structure for holding a plurality of soft package secondary battery cells

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2589564A (en) * 2019-11-26 2021-06-09 Bae Systems Plc Containment structure for a battery
EP3872923A1 (en) * 2020-02-25 2021-09-01 SK Innovation Co., Ltd. Battery module

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3696843B1 (en) * 2019-02-12 2024-05-01 TE Connectivity Austria GmbH Housing assembly for encasing an electromagnetic component and a method for assembling a housing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1045463A1 (en) * 1999-04-14 2000-10-18 Alcatel A method of fabricating an electrochemical cell battery and an improved cell package
KR200335185Y1 (en) * 2003-09-08 2003-12-03 태 주 하 a shoe sole

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1045463A1 (en) * 1999-04-14 2000-10-18 Alcatel A method of fabricating an electrochemical cell battery and an improved cell package
KR200335185Y1 (en) * 2003-09-08 2003-12-03 태 주 하 a shoe sole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2589564A (en) * 2019-11-26 2021-06-09 Bae Systems Plc Containment structure for a battery
EP3872923A1 (en) * 2020-02-25 2021-09-01 SK Innovation Co., Ltd. Battery module
US11710874B2 (en) 2020-02-25 2023-07-25 Sk On Co., Ltd. Battery module

Also Published As

Publication number Publication date
GB201212664D0 (en) 2012-08-29

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