CN205828569U - Secondary cell - Google Patents
Secondary cell Download PDFInfo
- Publication number
- CN205828569U CN205828569U CN201620707186.9U CN201620707186U CN205828569U CN 205828569 U CN205828569 U CN 205828569U CN 201620707186 U CN201620707186 U CN 201620707186U CN 205828569 U CN205828569 U CN 205828569U
- Authority
- CN
- China
- Prior art keywords
- housing
- secondary cell
- groove
- negative
- battery core
- 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- Withdrawn - After Issue
Links
- 238000007789 sealing Methods 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000005520 cutting process Methods 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 6
- 229920006255 plastic film Polymers 0.000 description 6
- 238000003475 lamination Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
This utility model provides a kind of secondary cell, and it includes battery core and housing.Housing includes: the first housing, has the first groove；And second housing, there is second groove relative with the first groove.Wherein, the first housing and the second housing seal link together, and battery core are housed in the first groove and in space that the second groove surrounds.According in secondary cell of the present utility model, due in battery core is housed in the first groove and the second groove surrounds space, first housing and the second housing fixing part housing battery core respectively, therefore, secondary cell of the present utility model reduces the first housing and the requirement of the second casing rigidity；When the first housing and the second housing are respectively provided with the intensity equal with the second housing of prior art, secondary cell of the present utility model can make the thickness of battery core maximize, and improves the energy density of secondary cell.
Description
Technical field
This utility model relates to field of batteries, particularly relates to a kind of secondary cell.
Background technology
Lithium ion battery has been widely used in various portable type electronic product, and is considered as electric automobile of future generation
Preferable accumulation power supply.In day by day fierce new-energy automobile market, each major company all for lithium ion battery design and
Performance is constantly furtherd investigate.
The housing material of existing lithium ion battery is generally divided into metal duricrust and metal forming plastic film, is compared to metal
Duricrust, battery prepared by metal forming plastic film has structure diversity and motility, the higher advantage of energy density.And as battery
Core, core (i.e. battery core main body) generally uses lamination and winding two ways.Relative to winding, lamination more can be abundant
Utilize battery space, it is achieved the demand of higher energy density.
In actual PRODUCTION TRAITS, laminated batteries is usually used to meet the demand of higher energy density design, but with
Automobile course continuation mileage and require more and more higher, energy density demand improves further, and the thickness design of battery core is consequently increased, this
Just it is encountered by a problem the most real: in the range of metal forming plastic film intensity is born, how to realize the need of thicker battery core design
Ask.
With reference to Fig. 5, conventionally, as battery core 1 is typically housed in the second housing 22 of housing 2 (by above-mentioned gold
Belong to paper tinsel plastic film make) the second groove 221 in, therefore battery core 1 has the highest requirement to the intensity of the second housing 22.On an equal basis
Intensity under, the battery core thickness that the housing 2 of this structure can bear is less.
Utility model content
In view of problem present in background technology, the purpose of this utility model is to provide a kind of secondary cell, and it can make
The thickness of battery core maximizes, and improves the energy density of secondary cell.
To achieve these goals, this utility model provides a kind of secondary cell, and it includes battery core and housing.
Housing includes: the first housing, has the first groove；And second housing, there is second relative with the first groove
Groove.Wherein, the first housing and the second housing seal link together, and battery core are housed in the first groove and the second groove encloses
In the space become.
The beneficial effects of the utility model are as follows:
According in secondary cell of the present utility model, due to the sky that battery core is housed in the first groove and the second groove surrounds
In, the first housing and the second housing fixing part housing battery core respectively, therefore, secondary cell of the present utility model reduces
To the first housing and the requirement of the second casing rigidity；It is respectively provided with the second shell with prior art at the first housing and the second housing
During the equal intensity of body, secondary cell of the present utility model can make the thickness of battery core maximize, and improves the energy of secondary cell
Density.
Accompanying drawing explanation
Fig. 1 is the exploded view according to secondary cell of the present utility model；
Fig. 2 is the sectional view of the embodiment according to secondary cell of the present utility model；
Fig. 3 is the sectional view of another embodiment according to secondary cell of the present utility model；
Fig. 4 is the schematic diagram of the battery core according to secondary cell of the present utility model；
Fig. 5 is the schematic diagram of the secondary cell of prior art.
Wherein, description of reference numerals is as follows:
1 battery core 22 second housing
11 anode pole piece 221 second grooves
111 plus plate current-collecting body 3 positive pole ears
112 positive pole diaphragm 4 negative lug
12 cathode pole piece 5 positive wire terminals
121 negative current collector 6 negative wire terminals
122 cathode membrane H hot sealing layers
13 isolating membrane S slopes
2 housing L length directions
21 first housing T thickness directions
211 first grooves
Detailed description of the invention
Describe secondary cell of the present utility model with reference to the accompanying drawings in detail.
Referring to figs. 1 through Fig. 4, include battery core 1 and housing 2 according to secondary cell of the present utility model.
Housing 2 includes: the first housing 21, has the first groove 211；And second housing 22, have and the first groove 211
The second relative groove 221.Wherein, the first housing 21 is sealed connected together with the second housing 22, and battery core 1 is housed in
In the space that one groove 211 and the second groove 221 surround.
According in secondary cell of the present utility model, owing to battery core 1 is housed in the first groove 211 and the second groove 221
In the space surrounded, the first housing 21 and the second housing 22 fixing part housing battery core 1 respectively, therefore, this utility model
Secondary cell reduce the first housing 21 and requirement of the second housing 22 intensity；Equal at the first housing 21 and the second housing 22
When having the intensity equal with the second housing 22 of prior art, secondary cell of the present utility model can make the thickness of battery core 1
Maximize, improve the energy density of secondary cell.
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 4, battery core 1 includes: anode pole piece 11,
Including plus plate current-collecting body 111 and the positive pole diaphragm 112 being coated on plus plate current-collecting body 111 surface；Cathode pole piece 12, including negative pole
Collector 121 and the cathode membrane 122 being coated on negative current collector 121 surface；And isolating membrane 13, by anode pole piece 11 He
Cathode pole piece 12 separates.
In the embodiment according to secondary cell of the present utility model, referring to figs. 1 through Fig. 4, described secondary cell also wraps
Include: positive pole ear 3, in being housed in housing 2 and with the plus plate current-collecting body 111 of the anode pole piece 11 of battery core 1, fix electrically connecting；And
Negative lug 4, fixes in being housed in housing 2 and with the negative current collector 121 of the cathode pole piece 12 of battery core 1 and electrically connects.
In the embodiment according to secondary cell of the present utility model, positive pole ear 3 and the positive pole collection of anode pole piece 11
Fluid 111 is integrally formed or split is formed.Positive pole ear 3 can be formed by plus plate current-collecting body 111 cross cutting of anode pole piece 11；When
When the anode pole piece 11 of battery core 1 is one, can go out a teat at plus plate current-collecting body 111 cross cutting, this teat just can be used as
Pole lug 3；When the anode pole piece 11 of battery core 1 is multiple, one can be gone out at plus plate current-collecting body 111 cross cutting of each anode pole piece 11
The teat of individual correspondence, all of teat is fixed together and can be used as positive pole ear 3.Positive pole ear 3 can also be individually welding
Element on the plus plate current-collecting body 111 of anode pole piece 11.
In the embodiment according to secondary cell of the present utility model, negative lug 4 and the negative pole collection of cathode pole piece 12
Fluid 121 is integrally formed or split is formed.Negative lug 4 can be formed by negative current collector 121 cross cutting of cathode pole piece 12；When
When the cathode pole piece 12 of battery core 1 is one, can go out a teat at negative current collector 121 cross cutting, this teat can be used as bearing
Pole lug 4；When the cathode pole piece 12 of battery core 1 is multiple, one can be gone out at negative current collector 121 cross cutting of each cathode pole piece 12
The teat of individual correspondence, all of teat is fixed together and can be used as negative lug 4.Negative lug 4 can also be individually welding
Element on the negative current collector 121 of cathode pole piece 12.
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 2, positive pole ear 3 and negative lug 4
The same side in battery core 1 L along its length.
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 3, positive pole ear 3 and negative lug 4 points
It is not positioned at the contrary both sides of battery core 1 L along its length.
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 1 and Fig. 3, described secondary cell also wraps
Including: positive wire terminal 5, fix electrically connecting in housing 2 is stretched in one end and with positive pole ear 3, the other end reaches outside housing 2；
Negative wire terminal 6, fixes in housing 2 is stretched in one end and with negative lug 4 and electrically connects, and the other end reaches outside housing 2.
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 2 and Fig. 3, the first groove 211 with just
The part that pole lead terminal 5 is relative with the junction of positive pole ear 3 is provided with slope S；Second groove 221 with positive wire terminal
5 parts relative with the junction of positive pole ear 3 are provided with slope S.Slope S is it can be avoided that positive wire terminal 5 is along thickness side
The destruction when T swings up and down, housing 2 caused.
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 3, the first groove 211 is drawing with negative pole
Line terminals 6 part relative with the junction of negative lug 4 is provided with slope S；Second groove 221 with negative wire terminal 6 and
The part that the junction of negative lug 4 is relative is provided with slope S.Slope S is it can be avoided that negative wire terminal 6 is at through-thickness T
Destruction when swinging up and down, housing 2 caused.
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 1 and Fig. 3, positive wire terminal 5 is overall
Straight, overall straight it is of value to the first housing 21 and the sealing to positive pole lead terminal 5 of second housing 22, and contributes to positive pole and draw
The para-position up and down of line terminals 5 and positive pole ear 3 and welding.Simultaneously relative to the positive wire terminal 5 of bending, positive wire terminal
The 5 overall straight difficult points reducing technique and the destruction the first housing 21 and the second housing 22 brought during avoiding bending.
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 1 and Fig. 3, negative wire terminal 6 is overall
Straight, overall straight it is of value to the first housing 21 and sealing of the second housing 22 anticathode lead terminal 6, and contributes to negative pole and draw
Line terminals 6 and negative lug about 4 para-position and weld.Simultaneously relative to the negative wire terminal 6 of bending, negative wire terminal 6
The overall straight difficult point reducing technique and the destruction the first housing 21 and the second housing 22 brought during avoiding bending.
In the embodiment according to secondary cell of the present utility model, the edge of the first housing 21 and the second housing 22 leads to
Cross Heat Sealing to link together, to form complete housing 2.
In the embodiment according to secondary cell of the present utility model, referring to figs. 1 through Fig. 3, positive wire terminal 5 is at least
The portion envelops being clamped between the first housing 21 and the second housing 22 has hot sealing layer H.When to the first housing 21 and the second housing
When the edge of 22 carries out Heat Sealing, the hot sealing layer H being clamped between the first housing 21 and the second housing 22 melts and with first
Housing 21 and the second housing 22 bond together, and (hot sealing layer H fuses with the internal layer of the first housing 21 described later and the second housing 22
Bond together).Hot sealing layer H can be coated with the other parts of positive wire terminal 5, i.e. hot sealing layer H and can wrap up positive pole and draw
Line terminals 5 extends to the part outside housing 2 to form exposed area, it is also possible to parcel positive wire terminal 5 extends in housing 2
Part is to form Nei Lu district.When the first housing 21 and the second housing 22 Heat Sealing, exposed area and Nei Lu district are prevented from
One housing 21 and the second housing 22 are short-circuited (when the first housing 21 and the second housing 22 Heat Sealing with positive wire terminal 5
When there is dislocation, without exposed area and Nei Lu district, the metal forming meeting described later within the first housing 21 and the second housing 22
It is short-circuited with positive wire terminal 5).
In the embodiment according to secondary cell of the present utility model, with reference to Fig. 1 and Fig. 3, negative wire terminal 6 is at least
The portion envelops being clamped between the first housing 21 and the second housing 22 has hot sealing layer H.When to the first housing 21 and the second housing
When the edge of 22 carries out Heat Sealing, the hot sealing layer H being clamped between the first housing 21 and the second housing 22 melts and with first
Housing 21 and the second housing 22 bond together.Hot sealing layer H can be coated with the other parts of negative wire terminal 6, i.e. seals
Layer H can wrap up part that negative wire terminal 6 extends to outside housing 2 to form exposed area, it is also possible to wraps up negative wire end
Son 6 extends to the part in housing 2 to form Nei Lu district.When the first housing 21 and the second housing 22 Heat Sealing, exposed area
Be prevented from the first housing 21 with Nei Lu district and the second housing 22 be short-circuited with negative wire terminal 6 (when the first housing 21 and
When second housing 22 Heat Sealing occurs dislocation, without exposed area and Nei Lu district, in the first housing 21 and the second housing 22
The metal forming described later in portion can be short-circuited with negative wire terminal 6).
In the embodiment according to secondary cell of the present utility model, hot sealing layer H is made up of polypropylene.
In the embodiment according to secondary cell of the present utility model, battery core 1 be takeup type battery core, lamination type electric core or
Volume adds stacked battery core.
In the embodiment according to secondary cell of the present utility model, lamination type electric core and volume are added in stacked battery core
Lamination portion, isolating membrane 13 be multiple and each be one chip, or isolating membrane 13 is Z-shaped one.
In the embodiment according to secondary cell of the present utility model, the first housing 21 and intermediate layer of the second housing 22
For metal forming, and internal layer and outer layer are insulating barrier.Wherein internal layer is used for forming fusion sealing, and outer layer plays a protective role.
In the embodiment according to secondary cell of the present utility model, metal forming is aluminium foil or steel foil.
In the embodiment according to secondary cell of the present utility model, internal layer is polypropylene.
In the embodiment according to secondary cell of the present utility model, outer layer is nylon.
In the embodiment according to secondary cell of the present utility model, the first groove 211 of the first housing 21 is by drawing
Stretching process is formed.
In the embodiment according to secondary cell of the present utility model, the second groove 221 of the second housing 22 is by drawing
Stretching process is formed.
In the embodiment according to secondary cell of the present utility model, the first housing 21 and the second housing 22 are integrally formed
Or split is formed.Stretching simultaneously two groove (the first grooves can be formed on a workpiece (such as aluminum plastic film or steel plastic film)
211 and second groove 221), then make two grooves relative by turnover, and then form a housing 2.
Claims (10)
1. a secondary cell, including:
Battery core (1)；And
Housing (2)；
It is characterized in that,
Housing (2) including:
First housing (21), has the first groove (211)；And
Second housing (22), has second groove (221) relative with the first groove (211)；
First housing (21) is sealed connected together with the second housing (22), and battery core (1) is housed in the first groove (211) and
In the space that second groove (221) surrounds.
Secondary cell the most according to claim 1, it is characterised in that battery core (1) including:
Anode pole piece (11), including plus plate current-collecting body (111) and the positive pole diaphragm that is coated on plus plate current-collecting body (111) surface
(112)；
Cathode pole piece (12), including negative current collector (121) and the cathode membrane that is coated on negative current collector (121) surface
(122)；And
Isolating membrane (13), separates anode pole piece (11) and cathode pole piece (12).
Secondary cell the most according to claim 2, it is characterised in that described secondary cell also includes:
Positive pole ear (3), is housed in housing (2) and fixes with the plus plate current-collecting body (111) of the anode pole piece (11) of battery core (1)
Electrical connection；And
Negative lug (4), is housed in housing (2) and fixes with the negative current collector (121) of the cathode pole piece (12) of battery core (1)
Electrical connection.
Secondary cell the most according to claim 3, it is characterised in that
Positive pole ear (3) is integrally formed or split formation with the plus plate current-collecting body (111) of anode pole piece (11)；And/or
Negative lug (4) is integrally formed or split formation with the negative current collector (121) of cathode pole piece (12).
Secondary cell the most according to claim 3, it is characterised in that
Positive pole ear (3) and negative lug (4) are positioned at the same side of battery core (1) (L) along its length；Or
Positive pole ear (3) and negative lug (4) lay respectively at battery core (1) both sides that (L) is contrary along its length.
Secondary cell the most according to claim 3, it is characterised in that described secondary cell also includes:
Positive wire terminal (5), fixes in housing (2) is stretched in one end and with positive pole ear (3) and electrically connects, and the other end reaches shell
Body (2) is outward；
Negative wire terminal (6), fixes in housing (2) is stretched in one end and with negative lug (4) and electrically connects, and the other end reaches shell
Body (2) is outward.
Secondary cell the most according to claim 6, it is characterised in that
Positive wire terminal (5) is overall straight；And/or
Negative wire terminal (6) is overall straight.
Secondary cell the most according to claim 6, it is characterised in that
First groove (211) is provided with slope in the part relative with the junction of positive wire terminal (5) and positive pole ear (3)
(S), the second groove (221) is provided with slope in the part relative with the junction of positive wire terminal (5) and positive pole ear (3)
(S)；And/or
First groove (211) is provided with slope in the part relative with the junction of negative wire terminal (6) and negative lug (4)
(S)；Second groove (221) is provided with slope in the part relative with the junction of negative wire terminal (6) and negative lug (4)
(S)。
Secondary cell the most according to claim 6, it is characterised in that
The portion envelops that positive wire terminal (5) is at least clamped between the first housing (21) and the second housing (22) has hot sealing layer
(H)；And/or
The portion envelops that negative wire terminal (6) is at least clamped between the first housing (21) and the second housing (22) has hot sealing layer
(H)。
Secondary cell the most according to claim 1, it is characterised in that in the first housing (21) and the second housing (22)
Interbed is metal forming, and internal layer and outer layer are insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707186.9U CN205828569U (en) | 2016-07-06 | 2016-07-06 | Secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707186.9U CN205828569U (en) | 2016-07-06 | 2016-07-06 | Secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205828569U true CN205828569U (en) | 2016-12-21 |
Family
ID=57565772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620707186.9U Withdrawn - After Issue CN205828569U (en) | 2016-07-06 | 2016-07-06 | Secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205828569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591555A (en) * | 2016-07-06 | 2018-01-16 | 宁德时代新能源科技股份有限公司 | Secondary battery |
-
2016
- 2016-07-06 CN CN201620707186.9U patent/CN205828569U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591555A (en) * | 2016-07-06 | 2018-01-16 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN107591555B (en) * | 2016-07-06 | 2024-03-19 | 宁德时代新能源科技股份有限公司 | Secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161221 Effective date of abandoning: 20240319 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161221 Effective date of abandoning: 20240319 |