CN104183798B - Battery cell and battery pack - Google Patents
Battery cell and battery pack Download PDFInfo
- Publication number
- CN104183798B CN104183798B CN201410382941.6A CN201410382941A CN104183798B CN 104183798 B CN104183798 B CN 104183798B CN 201410382941 A CN201410382941 A CN 201410382941A CN 104183798 B CN104183798 B CN 104183798B
- Authority
- CN
- China
- Prior art keywords
- lower house
- battery
- upper shell
- battery core
- battery cell
- 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.)
- Active
Links
- 239000000463 material Substances 0.000 claims abstract description 63
- 230000004888 barrier function Effects 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 20
- 239000002985 plastic film Substances 0.000 claims description 10
- 229920006255 plastic film Polymers 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 6
- 239000000178 monomer Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000009831 deintercalation Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007789 sealing Methods 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
- H01M50/138—Primary casings; Jackets or wrappings adapted for specific cells, e.g. electrochemical cells operating at high temperature
-
- 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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
-
- 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
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- 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
- H01M50/138—Primary casings; Jackets or wrappings adapted for specific cells, e.g. electrochemical cells operating at high temperature
- H01M50/1385—Hybrid cells
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to a kind of battery cell, including mounting structure, battery core and lug, described mounting structure covers in outside described battery core, directly encapsulate described battery core, described lug is connected with described battery core, and it is partially exposed to described encapsulating structure external body, described mounting structure includes upper shell and lower house, described upper shell and described lower house are bound to each other to form a confined space for accommodating described battery core, the material of described upper shell is flexible material, the material of described lower house is rigid material, described battery core is by anode pole piece, barrier film, cathode pole piece stacking forms.The invention still further relates to a kind of battery pack, including multiple battery cells, the plurality of battery cell is overlapped mutually setting.
Description
Technical field
The present invention relates to a kind of battery cell and battery pack.
Background technology
The security of battery is to affect the maximum bottleneck that accumulator car without environment pollution is universal, and power battery pack is typically connected by multiple battery cells or connection in series-parallel forms.Battery cell, according to the difference of housing, has aluminum hull/box hat battery and flexible-packed battery two kinds.Whether aluminum hull/box hat battery or flexible-packed battery, its internal battery core is made up of with the version of stacking anode pole piece, barrier film, cathode pole piece, for making battery have good performance, is both needed to compress battery core in the stacking direction.
Flexible-packed battery monomer is generally by one layer of laminated aluminum film battery core, then in the way of vacuumizing, utilizes the atm difference inside and outside packaging structure to ensure the compression of battery core.The advantages such as flexible-packed battery has flexible design, and security performance is good, and plasticity is stronger.But, aluminum plastic film material is softer, makes whole monomer softer, shape disunity, makes flexible-packed battery be difficult to consolidate when encapsulation, and corner is easy to be punctured, and reduces security.Current aluminum hull/box hat battery cell is on the basis of flexible-packed battery, is sealed in by flexible-packed battery in a rigid structural, and is filled with the gases such as nitrogen in the rigid structural sealed, to obtain the effect making battery core compress.It is good that aluminum hull/box hat battery has intensity, the advantage of outside simple and convenient assembly, but its plasticity is not as good as flexible-packed battery, when inside produces a large amount of gas, can not discharge more by force internal gas because of shell rigidity, and the security incident such as easily set off an explosion.
Additionally, in existing flexible-packed battery monomer and aluminum hull/box hat battery cell, be all coated with one layer of aluminum plastic film outside battery core, due to thermal conductivity factor relatively low of aluminum plastic film, the battery cell heat radiation to being in the case of high magnification charge and discharge is the most unfavorable, easily causes potential safety hazard.Meanwhile, existing flexible-packed battery monomer and aluminum hull/box hat battery cell all cannot be taken into account simultaneously and have fixed profile size, good heat dissipation, explosion-proof feature.
Summary of the invention
In view of this, necessary offer has fixed profile size, can effectively dispel the heat and explosion-proof battery cell and battery pack.
A kind of battery cell, including mounting structure, battery core and lug, described mounting structure covers in outside described battery core, directly encapsulate described battery core, described lug is connected with described battery core, and it is partially exposed to described encapsulating structure external body, described mounting structure includes upper shell and lower house, described upper shell and described lower house are bound to each other to form a confined space for accommodating described battery core, the material of described upper shell is flexible material, the material of described lower house is rigid material, and described battery core is made up of anode pole piece, barrier film, cathode pole piece stacking.
A kind of battery pack, including multiple described battery cells, the plurality of battery cell is overlapped mutually setting.
Relative to prior art, the battery cell of the present invention has the advantages that and directly encapsulates described battery core with mounting structure, the entirety of described battery core is not coated with aluminum plastic film, and lower house is made up of rigid material, the coefficient of heat conduction is high, and therefore, the heat of battery operated middle generation directly can be rapidly transferred to outside by described lower house, be conducive to the battery heat radiation in the case of high magnification charge and discharge, improve the security of battery.Meanwhile, upper shell is made up of flexible material, when cell internal pressure increases to a certain degree, can reduce pressure voluntarily in weak local leakage, improves the explosion-proof performance of battery cell.It addition, lower house uses rigid material, there is stronger intensity, be conducive to improving the support force of whole battery cell, and the shape that formation is relatively fixed is easily installed.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the battery cell of first embodiment of the invention.
Fig. 2 is the battery cell profile along II-II line of first embodiment of the invention.
Fig. 3 is the STRUCTURE DECOMPOSITION figure of the battery cell of first embodiment of the invention.
Fig. 4 is the stereogram of the battery pack of first embodiment of the invention.
Fig. 5 is the rearview of the battery pack of first embodiment of the invention.
Fig. 6 is the left view of the battery pack of second embodiment of the invention.
Fig. 7 is the schematic diagram of the battery cell of second embodiment of the invention.
Fig. 8 is the battery cell profile along VIII-VIII line of second embodiment of the invention.
Fig. 9 is the STRUCTURE DECOMPOSITION figure of the battery cell of second embodiment of the invention.
Figure 10 is the stereogram of the battery pack of second embodiment of the invention.
Figure 11 is the rearview of the battery pack of second embodiment of the invention.
Figure 12 is the left view of the battery pack of second embodiment of the invention.
Figure 13 is the schematic diagram of the battery cell of third embodiment of the invention.
Figure 14 is the battery cell profile along XIV-XIV line of third embodiment of the invention.
Figure 15 is the STRUCTURE DECOMPOSITION figure of the battery cell of third embodiment of the invention.
Figure 16 is the stereogram of the battery pack of third embodiment of the invention.
Figure 17 is the profile along XVII-XVII line of the battery pack of third embodiment of the invention.
Figure 18 is the left view of the battery pack of third embodiment of the invention.
Main element symbol description
| Battery cell | 10,20,30 |
| Mounting structure | 11,21,31 |
| Battery core | 12,22,32 |
| Lug | 13,23,33 |
| Upper shell | 14,24,34 |
| First main body | 142,242,252,342, |
| First side plate | 144,244,254,344 |
| Second side plate | 146,246,256,346 |
| Lower house | 15,25,35 |
| Hole, location | 16 |
| Second main body | 352 |
| Side | 354 |
| 3rd side plate | 3544 |
| 4th side plate | 3546 |
| 5th side plate | 3548 |
| First accommodates space | 36 |
| Second accommodates space | 38 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
The battery cell and the battery pack that there is provided the present invention below in conjunction with the accompanying drawings and the specific embodiments are described in further detail.
Referring to Fig. 1 to Fig. 3, first embodiment of the invention provides a kind of battery cell 10, including mounting structure 11, battery core 12 and a lug 13.It is outside that described mounting structure 11 covers in described battery core 12, directly encapsulates described battery core 12.Described lug 13 is connected with described battery core 12, and it is outside to be partially exposed at described mounting structure 11.
Described mounting structure 11 includes upper shell 14 and a lower house 15.Described upper shell 14 and described lower house 15 are bound to each other to form a confined space for accommodating described battery core 12.The material of described upper shell 14 is flexible material, and the material of described lower house 15 is rigid material.
Described upper shell 14 has a protruding space on the direction away from described lower house 15, and the edge in described space has outward extending side, and described side is securable on described lower house 15.The space of described upper shell 14 can accommodate at least part of described battery core 12, and the size shape in described space can be formulated according to actual needs.As long as in being able to ensure that the confined space that described battery core 12 can be fixed in described upper shell 14 and described lower house 15 is bound to each other to form, the quantity of described side and the shape of described side do not limit.
Referring to Fig. 2, described upper shell 14 is similar hat-shaped structure, and the periphery of described upper shell 14 is bent into " Z " type ledge structure, makes upper shell 14 have a sunk structure.Specifically, this upper shell 14 includes that first main body 142, four of rectangular plate-like bends the first side plate 144 extended, and four the second side plates 146 outwards bending extension respectively from the four edges of the first side plate 144 respectively from the four edges of this first main body 142.Described first main body 142 can be one-body molded with the first side plate 144 and the second side plate 146, and at four edges formation " Z " type ledge structure of this first main body 142.Described first side plate 144 is perpendicular to described first main body 142, and described second side plate 146 is parallel to described first main body 142.Four described first side plates 144 are connected with each other, and are connected with described first main body 142 simultaneously, form a sunk structure, are used for carrying described battery core 12.Four described second side plates 146 are connected with each other, and are connected with each other with four corresponding described first side plates 144 simultaneously, and these four the second side plates 146 stretch out relative to described first main body 142, make described upper shell 14 become hat-shaped structure.Wherein, can be encapsulated by described mounting structure 11 to realize described battery core 12 entirety, described first side plate 144 is more than or equal to the thickness of described battery core 12 in the length being perpendicular on described first main body 142 direction.
The material of described upper shell 14 is flexible material, such as, aluminum plastic film.In the present embodiment, the material of described upper shell 14 is aluminum plastic film.Preferably, the thickness of described upper shell 14 is 0.3mm～1mm.
Described lower house 15 is a planar structure body, coordinates with described upper shell 14, forms a confined space for carrying described battery core 12.Preferably, described lower house 15 is the planar structure body of a rectangular plate-like.The area of described lower house 15 is more than the area of upper shell 14.That is, the edge of the rectangular plate-like of described lower house 15 is not covered by the edge of described second side plate 146 of described upper shell 14.The part that described lower house 15 is not covered by described second side plate 146 of described upper shell 14 can arrange hole 16, location, facilitates multiple battery cell 10 to be superimposed as during battery pack and is fixed.
The material of described lower house 15 is rigid material, such as, for stainless steel, aluminium or magnadure.In the present embodiment, the material of described lower house 15 is aluminium.Preferably, the thickness of described lower house 15 is 0.3mm～1mm.
Further, it is preferable that the inner surface of described lower house 15 has insulating properties.The inner surface of described lower house 15 refers to the described lower house 15 surface near described battery core 12.Such as, when the material of described lower house 15 is aluminium material, insulating properties can be obtained through anodic oxidation；It addition, also insulating properties can be obtained at the preferable insulating materials of inner surface coated with thermally conductive of described lower house 15, as coated insulating materials or PP(polypropylene) obtain insulating properties.
Described battery core 12 is made up of anode pole piece, barrier film, cathode pole piece stacking.It is outside that described mounting structure 11 covers in described battery core 12, directly encapsulates described battery core 12.The described described battery core of direct encapsulation 12 refers to, described battery core 12 is outside only to be encapsulated by described mounting structure 11, is the most directly coated with by described upper shell 14 and described lower house 15, is no longer coated with by other materials.More specifically, refer to not have between described battery core 12 pole piece and described mounting structure 11 other encapsulating materials, or described battery core 12 pole piece contacts setting with the inner surface of described mounting structure 11.In described battery core 12, the material of described anode pole piece, barrier film and cathode pole piece and manufacture method can be same as the prior art.
Described lug 13 be arranged on described battery core 12 thickness direction relative to two surfaces on any one surface, its bearing of trend is parallel to described battery core 12 surface.Specifically, described lug 13 with on the thickness direction of described battery core 12 relative to two surfaces on any one surface co-planar arrange.When described battery core 12 is encapsulated by described mounting structure 11, it is preferable that described lug 13 is arranged near described lower house 15.The material of described lug 13 can be aluminium foil or nickel plating Copper Foil, and the thickness of described lug 13 can select according to actual needs, and the thickness of lug 13 described in present embodiment is 0.2mm.
When described battery cell 10 uses, described upper shell 14 contacts with flat-type rigid face.When multiple described battery cells 10 are superimposed as battery pack, described upper shell 14 contacts with the described lower house 15 of adjacent described battery cell 10.Described lower house 15 is mainly used in the connection of described battery cell 10 and other outer stationary frame.When multiple described battery cells 10 are superimposed as battery pack, described lower house 15 is mainly used in the fixing of multiple mutual position of described battery cell 10.
The assemble method of battery cell 10 particularly as follows: strike out described upper shell 14 by described flexible material, described rigid material is struck out the shape of described lower house 15, the described battery core 12 being provided with described lug 13 is placed on described lower house 15, then described upper shell 14 and described lower house 15 is made to combine by the way of thermoplastic, form described mounting structure 11, and it is internal to make described battery core 12 be encapsulated in described mounting structure 11, it is outside for connecting external circuit that the described lug of part 13 is exposed to described mounting structure 11.Specifically, when upper-lower casing encapsulates, seal after sealing part tab parcel lug 13 does insulation processing, rely on the miniature deformation of upper shell 14 to realize envelope and mould, make the described lug of part 13 be exposed to described mounting structure 11 outside for connecting external circuit.
The battery cell 10 that the present invention provides has the advantages that and directly encapsulates described battery core 12 with mounting structure 11, the entirety of described battery core 12 is not coated with aluminum plastic film, and lower house 15 is made up of rigid material, the coefficient of heat conduction is high, therefore, the heat of battery operated middle generation directly can be rapidly transferred to outside by described lower house 15, and beneficially the battery heat radiation in the case of high magnification charge and discharge, improves the security of battery.Meanwhile, upper shell 14 is made up of flexible material, when cell internal pressure increases to a certain degree, can reduce pressure voluntarily in weak local leakage, improves the explosion-proof performance of battery cell 10.It addition, lower house 15 uses rigid material, there is stronger intensity, be conducive to improving the support force of whole battery cell 10, and the shape that formation is relatively fixed is easily installed.
It addition, refer to Fig. 4 to Fig. 6, first embodiment of the invention also provides for a kind of battery pack 100.Described battery pack 100 includes multiple battery cells 10 that stacking is arranged.Specifically, during multiple described battery cell 10 that stacking is arranged, the described upper shell 14 of a battery cell 10 contacts setting with the described lower house 15 of adjacent battery cell 10.The plurality of described battery cell 10 forms an overall structure by hole, location 16 is fixing.Specifically, bolt etc. can be used to connect tightening member, by hole 16, location, described battery pack 100 be compressed.
Under the effect of described battery pack 100 clamping force, described upper shell 14 can deform upon for flexible material, and thrust is transferred to battery core 12, simultaneously, the region that described lower house 15 is corresponding with described battery core 12 will occur slight deformation, the direction of multiple described battery cell 10 superposition produces displacement, described battery core 12 within described battery cell 10 is compressed, in guarantee battery, positive/negative plate and barrier film are in good contact condition, it is beneficial to lithium ion pass through barrier film, carry out embedding and deintercalation campaign at positive and negative pole material, ensures the work of battery-efficient rate.Because described mounting structure 11 inside circumference has dielectric protection layer, it is not result in that mounting structure 11 inwall is damaged, therefore, when described upper shell 14 and described lower house 15 region corresponding with described battery core 12 are by generation slight deformation, described battery core 12 will not be destroyed.
Additionally, refer to Fig. 5 and Fig. 6, in described battery pack 100, the part that described lower house 15 is not covered by described battery core 12 can form radiating fin, the heat that battery core 12 described in battery cell 10 produces can be transmitted to the fin of four sides by lower house 15, by scale, heat being derived battery pack 100, the heat radiation to battery has positive role.Connect tightening member by installing in hole 16, described location, can easily described battery pack 100 be compressed, increase the heat-transfer capability of battery pack, improve the thermal balance performance of described battery pack 100.
Referring to Fig. 7 to Fig. 9, second embodiment of the invention provides a kind of battery cell 20, including mounting structure 21, battery core 22 and a lug 23.It is outside that described mounting structure 21 covers in described battery core 22, directly encapsulates described battery core 22.Described lug 23 is connected with described battery core 22, and it is outside to be partially exposed at described mounting structure 21.
Described mounting structure 21 includes upper shell 24 and a lower house 25.Described upper shell 24 and described lower house 25 are bound to each other to form a confined space for accommodating described battery core 22.The material of described upper shell 24 is flexible material, and the material of described lower house 25 is rigid material.
In described battery cell 20 in the present embodiment, described battery core 22, described lug 23 and the structure of described upper shell 24 and material are respectively with battery cell 10 described in the first embodiment, and described battery core 12, described lug 13 and the structure of described upper shell 14 and material are identical.It is from battery cell 10 difference described in the first embodiment: described lower house 25 is identical with the structure of described upper shell 24 but material is different, that is, the structure of the described lower house 25 in the present embodiment and described upper shell 24 is all identical with the structure of the described upper shell 14 in first embodiment；Described lug 23 is arranged in the plane at described battery core 22 thickness direction place.
Specifically, described upper shell 24 includes the first side plate 244 that first main body 242, four of rectangular plate-like extends respectively, and four the second side plates 246 extended from the four edges of the first side plate 244 respectively from the four edges of this rectangular slab.Lower house 25 includes the first side plate 254 that first main body 252, four of rectangular plate-like extends respectively, and four the second side plates 256 extended from the four edges of the first side plate 254 respectively from the four edges of this rectangular slab.By glueing joint, weld or making described second side plate 246 of described upper shell 24 and described second side plate 256 of described lower house 25 combine by the way of metal flange parcel, form described mounting structure 21, seal described battery core 22.Additionally, can be encapsulated by described mounting structure 21 to realize described battery core 22 entirety, described first side plate 244 the length being perpendicular on described first main body 242 direction and described first side plate 254 in the length being perpendicular on described first main body 252 direction and, more than or equal to the thickness of described battery core 22.
Described upper shell 24 is identical and symmetrical with described lower house 25 structure.Make described battery core 22 not be damaged to preferably encapsulate described battery core 22, and make full use of the space of described mounting structure 21, it is preferable that described lug 23 is arranged on the center of the plane on described battery core 22 thickness direction.
The described battery cell 20 that the present invention provides has the advantages that and directly encapsulates described battery core 22 with mounting structure 21, the entirety of described battery core 22 is not coated with aluminum plastic film, and lower house 15 is made up of rigid material, the coefficient of heat conduction is high, therefore, the heat of battery operated middle generation directly can be rapidly transferred to outside by described lower house 25, and beneficially the battery heat radiation in the case of high magnification charge and discharge, improves the security of battery.Meanwhile, upper shell 24 is made up of flexible material, when cell internal pressure increases to a certain degree, can reduce pressure voluntarily in weak local leakage, improves the explosion-proof performance of battery cell 20.It addition, lower house 25 uses rigid material, there is stronger intensity, be conducive to improving the support force of whole battery cell 20, and the shape that formation is relatively fixed is easily installed.Further, described upper shell 24 is of similar shape with described lower house 25, and manufacture method is simple；Described upper shell 24 is all hat-shaped structure with described lower house 25; in the corner effectively protecting described battery cell 20; while preventing described battery cell 20 to be scraped off damage, it is possible to ensure that described lug 23 is in the central plane of described battery cell 20, be adapted to the installation of particular/special requirement.
It addition, refer to Figure 10 to Figure 12, second embodiment of the invention also provides for a kind of battery pack 200.Described battery pack 200 includes the multiple described battery cell 20 that stacking is arranged.Specifically, during multiple described battery cell 20 that stacking is arranged, the described upper shell 24 of a battery cell 20 contacts setting with the described lower house 25 of adjacent battery cell 20.Multiple described battery cells 20 can be combined by binding agent stacking, forms an overall structure.
In described battery pack 200, the heat of internal battery pack can quickly be derived by the lower house 25 that rigid material is formed；The part formation radiating fin that second side plate 256 of described lower house 25 is overlapping with the second side plate 246 of described upper shell 24, heat conduction between the described battery cell 20 of described battery pack 200 there is positive role, the internal heat transfer ability of battery pack can be increased, improve the thermal balance performance of battery pack.
Referring to Figure 13 to Figure 15, third embodiment of the invention provides a kind of battery cell 30, including mounting structure 31, battery core 32 and a lug 33.It is outside that described mounting structure 31 covers in described battery core 32, directly encapsulates described battery core 32.Described lug 33 is connected with described battery core 32, and it is outside to be partially exposed at described mounting structure 31.
Described mounting structure 31 includes upper shell 34 and a lower house 35.Described upper shell 34 and described lower house 35 are bound to each other to form a confined space for accommodating described battery core 32.The material of described upper shell 34 is flexible material, and the material of described lower house 35 is rigid material.Described upper shell 34 includes the first side plate 344 that first main body 342, four of rectangular plate-like extends respectively, and four the second side plates 346 extended from the four edges of the first side plate 344 respectively from the four edges of this rectangular slab.
In described battery cell 30 in the present embodiment, described in described battery core 32, described lug 33 and the structure of described upper shell 34 and material and the first embodiment in battery cell 10, described battery core 12, described lug 13 and the structure of described upper shell 14 and material are the most identical.It is from battery cell 10 difference described in the first embodiment: the structure of lower house 35 described in the present embodiment is different with the structure of the described lower house 15 in the first embodiment, and described lower house 35 is different with the concrete combination of described upper shell 14 with lower house 15 described in the first embodiment from the concrete combination of described upper shell 34.
Specifically, described lower house 35 includes the second main body 352 of rectangular plate-like and three step-like sides 354 extended respectively from the three of this rectangular slab limits.Described three sides 354 can be connected with each other.More specifically, described side 354 can have be connected with described second main body 352 the 3rd side plate 3544, state the 5th side plate 3548 of described second main body 352 away from this, and described the 4th side plate 3546 that 3rd side plate 3544 is connected with described 5th side plate 3548, to be collectively forming this step-like described side 354.Described 3rd side plate 3544 can be perpendicular to described second main body 352 with described 5th side plate 3548, and described 4th side plate 3546 can be parallel to described second main body 352.Described 3rd side plate 3544 is less than or equal to the thickness of described battery core 32 in the length being perpendicular on described second main body 352 direction, and during the most multiple battery cell 30 stacking, two adjacent described lower houses 35 are bonded to each other fixing.
Refer to Figure 14, described lower house 35 with the concrete combination of described upper shell 34 is: described second side plate 346 contacts setting with described second main body 352, make described first main body 342, described first side plate 344 and described second main body 352 jointly surround a confined space, be used for encapsulating described battery core 32；Described first side plate 344 and described side 354 interval are arranged.
Further, refer to Figure 17, described second main body 352 accommodates space 36 with multiple described first side plate 3554 common definition one first, multiple described sides 354 define one second in described first receiving space 36 further away from the side of described second main body 352 and accommodate space 38, described second accommodates space 38 matches with described second main body 352, it is possible to accommodate described second main body 352 of another identical described lower house 35 when multiple described lower houses 35 are overlapped mutually.Described first accommodates space 36 is used for accommodating described battery core 32 and described upper shell 34, described second accommodates space 38 accommodates for part and coordinates the described lower house 35 that another is identical, mainly accommodates described second main body 352 of another battery cell 30 and described 3rd side plate 3544.Described side 354 the length being perpendicular on described second main body 352 direction more than the thickness of described battery core 32 and described upper shell 34 and, so that described lower house 35 can cover in outside described battery core 32 and described upper shell 34, and described second is made to accommodate outside the described side of part 354 that space 38 can accommodate adjacent described lower house 35 further.The shape of described side 354 can make midfeather remain to abut when having two adjacent described lower house 35 superpositions in same direction of described battery core 32 and described upper shell 34.Specifically, the inner side of the described side 354 of described lower house 35 leans with the outside of the described side 354 of another adjacent described lower house 35.
The described battery cell 30 that the present invention provides has the advantages that and directly encapsulates described battery core 32 with mounting structure 31, the entirety of described battery core 32 is not coated with aluminum plastic film, and lower house 35 is made up of rigid material, the coefficient of heat conduction is high, therefore, the heat of battery operated middle generation directly can be rapidly transferred to outside by described lower house 35, and beneficially the battery heat radiation in the case of high magnification charge and discharge, improves the security of battery.Meanwhile, upper shell 34 is made up of flexible material, when cell internal pressure increases to a certain degree, can reduce pressure voluntarily in weak local leakage, improves the explosion-proof performance of battery cell 30.It addition, lower house 35 uses rigid material, there is stronger intensity, be conducive to improving the support force of whole battery cell 30, and the shape that formation is relatively fixed is easily installed.Meanwhile, because described upper shell 34 has, with described lower house 35, the side plate matched, described upper shell 34 is combined formation mounting structure 31 and can directly fix, is not required to, by thermoplastic manner or adhesive bond, simplify operation with described lower house 35.
It addition, refer to Figure 16 to Figure 18, third embodiment of the invention also provides for a kind of battery pack 300.Described battery pack 300 includes the multiple described battery cell 30 that stacking is arranged.The plurality of battery cell 30 can be combined by binding agent stacking, forms an overall structure.
The multiple described lower house 35 of described battery pack 300 is overlapped in same direction, makes multiple described battery cell 30 be overlapped mutually setting.The direction defining the superposition of multiple described battery cell 30 is X.When multiple described battery cell 30 superposition, in the X direction, the plurality of relative position of described lower house 35 being overlapped mutually is fixed, thus is fixed the described battery core 32 in described first receiving space 36 and described upper shell 34.That is, being separated with battery core 32 described in one and described upper shell 34 between two adjacent described second main bodys 352, in this X-direction, described first main body 342 contacts with described second main body 352 of adjacent battery cell 30 and fits.
Under the effect of described battery pack 300 clamping force, described upper shell 34 can deform upon for flexible material, and thrust is transferred to battery core 12, simultaneously, the region that described lower house 35 is corresponding with described battery core 12 will occur slight deformation, the direction of multiple described battery cell 30 superposition produces displacement, described battery core 32 within described battery cell 30 is compressed, in guarantee battery, positive/negative plate and barrier film are in good contact condition, it is beneficial to lithium ion pass through barrier film, carry out embedding and deintercalation campaign at positive and negative pole material, ensures the work of battery-efficient rate.Because mounting structure inside circumference has dielectric protection layer, it is not result in that mounting structure 11 inwall is damaged, therefore, when described upper shell 34 and described lower house 35 region corresponding with described battery core 32 are by generation slight deformation, described battery core 32 will not be destroyed.
Additionally, described upper shell 34 has, with described lower house 35, the side plate matched, the described battery pack 300 that appearance and size is unified can be formed, easily described battery pack 300 can be fixed and be compressed, the heat within described battery pack 300 can quickly be derived by the described lower house 35 that rigid material is made；The side of overlapped lower house 35 is conducive to the heat conduction between described battery pack 300 each described battery cell 30 interior, increases the heat-transfer capability within described battery pack 300, improves the thermal balance performance of described battery pack 300.
It addition, those skilled in the art also can do other changes, certainly, these changes done according to present invention spirit in spirit of the present invention, within all should being included in scope of the present invention.
Claims (6)
1. a battery cell, including mounting structure, battery core and lug, it is characterised in that described encapsulation is tied
Structure body covers in outside described battery core, directly encapsulates described battery core, and described lug is connected with described battery core, and
Being partially exposed to described encapsulating structure external body, described mounting structure includes upper shell and lower house, institute
State upper shell and described lower house be bound to each other to form a confined space for accommodating described battery core, described on
The material of housing is flexible material, and the material of described lower house is rigid material, and described battery core is by positive pole pole
Sheet, barrier film, cathode pole piece stacking composition, described lower house is a planar structure body, described lower house
Edge is not by the edges cover of described upper shell.
2. battery cell as claimed in claim 1, it is characterised in that the material of described lower house be stainless steel,
Aluminium or magnadure, described upper shell is aluminum plastic film.
3. battery cell as claimed in claim 1, it is characterised in that described upper shell and described lower house interior
Surface has insulating properties.
4. battery cell as claimed in claim 1, it is characterised in that described upper shell is away from described lower house
Direction on there is a protruding space, the edge in described space has side, and described side is fixed on described
On lower house.
5. battery cell as claimed in claim 4, it is characterised in that described upper shell includes the of rectangular plate-like
One main body, four the first side plates extended from the four edges of described first main body respectively, and four difference
The second side plate extended from the four edges of the first side plate, described first side plate is perpendicular to described first main body,
Four described first side plates are connected with each other, and are connected with described first main body simultaneously, and described second side plate is put down
Row is in described first main body, and four described second side plates are connected with each other, and simultaneously with described in corresponding four
First side plate is connected with each other, and these four second side plates stretch out relative to described first main body.
6. a battery pack, including multiple battery cells as described in any one in claim 1 to 5, multiple
Described battery cell is overlapped mutually setting.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382941.6A CN104183798B (en) | 2014-08-06 | 2014-08-06 | Battery cell and battery pack |
| PCT/CN2015/082713 WO2016019769A1 (en) | 2014-08-06 | 2015-06-30 | Battery cell and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382941.6A CN104183798B (en) | 2014-08-06 | 2014-08-06 | Battery cell and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104183798A CN104183798A (en) | 2014-12-03 |
| CN104183798B true CN104183798B (en) | 2016-09-07 |
Family
ID=51964689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410382941.6A Active CN104183798B (en) | 2014-08-06 | 2014-08-06 | Battery cell and battery pack |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104183798B (en) |
| WO (1) | WO2016019769A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558661B (en) * | 2017-01-17 | 2023-07-18 | 华霆（合肥）动力技术有限公司 | Battery module capable of exhausting air directionally and power battery |
| CN108321423B (en) * | 2018-03-01 | 2024-03-22 | 珠海格力电器股份有限公司 | Battery capacity-dividing equipment |
| CN108365136B (en) * | 2018-03-16 | 2024-04-09 | 长沙优力电驱动系统有限公司 | Battery cell packaging box, lithium battery and battery cell packaging method |
| CN112350031A (en) * | 2019-07-22 | 2021-02-09 | 宁德新能源科技有限公司 | Battery with a battery cell |
| CN112366393B (en) | 2019-07-23 | 2023-10-20 | 宁德时代新能源科技股份有限公司 | secondary battery |
| CN113131045B (en) * | 2020-01-13 | 2023-06-13 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN113285149A (en) * | 2020-02-18 | 2021-08-20 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN111244527B (en) * | 2020-03-03 | 2022-05-20 | 宁德新能源科技有限公司 | Battery cell, battery and packaging bag |
| WO2021248488A1 (en) * | 2020-06-12 | 2021-12-16 | 宁德新能源科技有限公司 | Battery and electrical device |
| CN112676785B (en) * | 2020-12-31 | 2024-03-15 | 镇江龙源铝业有限公司 | Forming method of aluminum material for heat dissipation of automobile battery |
| CN112968243B (en) * | 2021-02-02 | 2023-03-31 | 江苏海思联新能源科技有限公司 | Solid-state lithium battery with high-temperature explosion-proof protection structure and manufacturing method thereof |
| CN113193278A (en) * | 2021-04-28 | 2021-07-30 | 宁德新能源科技有限公司 | Battery module and consumer |
| CN113904036B (en) * | 2021-10-08 | 2024-04-30 | 陕西奥林波斯电力能源有限责任公司 | High-capacity single battery and assembly method |
| CN114335821B (en) * | 2022-01-05 | 2024-02-09 | 宁波容百新能源科技股份有限公司 | Soft packet of electric core casing and soft packet of electric core |
| CN114374030B (en) * | 2022-02-10 | 2024-07-12 | 中创新航科技股份有限公司 | Battery, battery pack and preparation method of battery |
| CN114824602A (en) * | 2022-03-31 | 2022-07-29 | 广东国光电子有限公司 | Combined battery cell shell and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764267A (en) * | 2008-12-24 | 2010-06-30 | 深圳市比克电池有限公司 | Battery and manufacturing method |
| CN101877421A (en) * | 2009-04-29 | 2010-11-03 | 深圳市比克电池有限公司 | Battery and manufacturing method thereof |
| CN103904279A (en) * | 2014-02-25 | 2014-07-02 | 江苏华东锂电技术研究院有限公司 | Battery separator for flexibly packaging lithium ion battery pack and battery pack |
| CN204144329U (en) * | 2014-08-06 | 2015-02-04 | 江苏华东锂电技术研究院有限公司 | Battery cell and battery pack |
| CN204189831U (en) * | 2014-08-06 | 2015-03-04 | 江苏华东锂电技术研究院有限公司 | Battery cell and battery pack |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411081A (en) * | 2002-11-15 | 2003-04-16 | 中信国安盟固利电源技术有限公司 | Flexible package liquid state lithium ion battery |
| CN201498537U (en) * | 2008-04-11 | 2010-06-02 | 于湘勇 | Cover plate of lithium battery of plastics and plastic film with function of explosion prevention |
| US20140099532A1 (en) * | 2012-10-09 | 2014-04-10 | Samsung Sdi Co., Ltd. | Secondary battery |
-
2014
- 2014-08-06 CN CN201410382941.6A patent/CN104183798B/en active Active
-
2015
- 2015-06-30 WO PCT/CN2015/082713 patent/WO2016019769A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764267A (en) * | 2008-12-24 | 2010-06-30 | 深圳市比克电池有限公司 | Battery and manufacturing method |
| CN101877421A (en) * | 2009-04-29 | 2010-11-03 | 深圳市比克电池有限公司 | Battery and manufacturing method thereof |
| CN103904279A (en) * | 2014-02-25 | 2014-07-02 | 江苏华东锂电技术研究院有限公司 | Battery separator for flexibly packaging lithium ion battery pack and battery pack |
| CN204144329U (en) * | 2014-08-06 | 2015-02-04 | 江苏华东锂电技术研究院有限公司 | Battery cell and battery pack |
| CN204189831U (en) * | 2014-08-06 | 2015-03-04 | 江苏华东锂电技术研究院有限公司 | Battery cell and battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016019769A1 (en) | 2016-02-11 |
| CN104183798A (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104183798B (en) | Battery cell and battery pack | |
| CN204144329U (en) | Battery cell and battery pack | |
| CN208401004U (en) | Battery module, the battery pack including the battery module and vehicle | |
| CN108511660A (en) | Battery module | |
| CN204130659U (en) | A kind of Li-ion batteries piles | |
| JP2012138315A (en) | Lithium ion battery module | |
| CN101855746A (en) | Battery cell having improved thermal stability and middle or large-sized battery module employed with the same | |
| CN109449322A (en) | A kind of novel lithium battery with super thin metal shell | |
| US9048463B2 (en) | Pouch-cell battery arrangement and corresponding production method and use | |
| CN102637835A (en) | Cover plate structure and battery case for lithium ion battery and lithium ion battery | |
| CN204189831U (en) | Battery cell and battery pack | |
| CN104347907A (en) | Battery, battery module and vehicle | |
| CN210926233U (en) | Battery module and battery pack | |
| CN211404560U (en) | Flexible package polymer lithium battery pack with improved structure | |
| KR20140004835A (en) | Battery pack | |
| CN205609588U (en) | Flexible packing secondary cell | |
| CN214280064U (en) | Electricity core packaging structure of apron heat dissipation | |
| CN108987620A (en) | A kind of battery and battery modules | |
| CN214099713U (en) | Radiating electric core packaging structure of electrode lid | |
| CN211957702U (en) | Heat release explosion-proof lithium ion battery | |
| CN113597701B (en) | Electrochemical device and electronic device | |
| CN208690310U (en) | A kind of battery and battery modules | |
| CN201413847Y (en) | Lithium-ion power battery | |
| CN210139681U (en) | Aluminum-plastic film structure for anti-corrosion soft package battery | |
| CN204464384U (en) | Secondary cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |