CN107317047A - The lithium battery and its battery core assemble method of a kind of pair of core strueture - Google Patents
The lithium battery and its battery core assemble method of a kind of pair of core strueture Download PDFInfo
- Publication number
- CN107317047A CN107317047A CN201710399169.2A CN201710399169A CN107317047A CN 107317047 A CN107317047 A CN 107317047A CN 201710399169 A CN201710399169 A CN 201710399169A CN 107317047 A CN107317047 A CN 107317047A
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- Prior art keywords
- core
- lug
- battery
- lithium battery
- pair
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- 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
- H01M50/531—Electrode connections inside a battery casing
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to the lithium battery and its battery core assemble method of a kind of pair of core strueture, its core strueture includes two battery cores, stacked together using being connected in parallel, after be put into shell.Assemble method is that will wind the battery core of completion, be placed in parallel in welding tooling, a pole plate is respectively placed in downside, upside respectively places a lug, using the mode of resistance welding, combines both.
Description
Technical field
The present invention relates to field of lithium ion secondary, more particularly to a kind of pair of core strueture lithium battery and its battery core group
Dress method.
Background technology
As high-capacity lithium battery is widely used in the fields such as power vehicle, energy storage, the structure and assemble method of battery are got over
More to be paid attention to.Traditional battery design is single core strueture, and because thickness is big, pole piece and electrolyte wellability are bad, and
Internal resistance is inconsistent, easily causes the premature deterioration of battery.
Finished product lithium battery includes the main composition part such as battery core, lug, superstructure, shell, it is necessary to by battery core during assembling
With inserting housing after tab welding, and inject electrolyte.The core strueture design of battery is very diversified, and assembling mode also has very
Big difference, different structure designs and assemble method is larger to the performance impact of battery.
Existing pair of core strueture battery design, mostly both sides are welded by several times respectively, there is that process is more, quality control difficulty
Big the shortcomings of.Therefore the application of the assemble method of new double core strueture batteries, to reduction production cost, improves battery matter
Amount, there is key effect.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides the lithium battery of a kind of pair of core strueture, it is characterised in that：It is described
Electric core structure of lithium battery includes two single lithium battery battery cores, and two battery core stackings are inserted after being connected in parallel by positive and negative lug
Housing, and also include insulation connector, the space produced during the battery core assembling of filling inside battery.
Further, it is characterised in that：The insulation connector includes matrix part and the lug extended from matrix part
Cut piece, it is two parallel rod-like structures, and its front end is crook, and the width for limiting lug is positioned, and plays fixation
The effect of lug.
Further, it is characterised in that：The insulation connector also includes shell divide part, and it is that two bendings are rectangular
Body, for filling the space between both sides shell and lug.
Further, it is characterised in that：The insulation connector also includes top cover cut piece, and its is coupled from above at two
Between shell divide part, for being inserted between lug and top cover.
Further, it is characterised in that：It is chamfering structure to bend on the downside of cuboid, to prevent puncturing barrier film
Further, it is characterised in that：The insulation connector also include distance piece, be arranged on two lug cut piece it
Between region.
Further, it is characterised in that：The positive and negative lug for connecting battery core is work shape, can doubling.
Further, it is characterised in that：Bilateral lug pole plate and battery core are connected by the way of resistance welding, is once added
Work, and high temperature and foreign matter are not produced.
Further, it is characterised in that：Two lug cut piece arrange that it is connected with insulative inserts matrix part for splayed
The spacing in portion is small, and distal end spacing is big.
The present invention by using welding after to fold lug method, can effectively improve production efficiency and ensure battery core group
The precision of dress, one-shot forming, internal resistance is low, and uniformity is good.Resistance welding mode, can be prevented effectively from high temperature and powder in welding process
Dirt, it is to avoid the generation of foreign matter.Insulative inserts, can reduce the risk of internal short-circuit of battery.
Brief description of the drawings
Each exemplary embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage are common for this area
It will become more apparent for technical staff, in the accompanying drawings:
Fig. 1 is double core strueture front views of the present invention；
Fig. 2 is double core strueture side views of the present invention；
Fig. 3 is battery core, pole plate, lug, top cover sequence schematic diagram in assemble method of the invention；
Fig. 4 is groove structure schematic diagram at lug bending of the present invention；
Fig. 5 is insulative inserts structure chart of the present invention, and wherein A is front view, and B is left view, and C is top view.
Fig. 6 is another embodiment upward view of insulative inserts of the present invention.
Fig. 7 is another example structure figure of insulative inserts of the present invention, and wherein A is upward view, and B is left view.
Fig. 8 is the structural representation of welding completion battery core in assemble method of the invention；
The core strueture that Fig. 9 is the present invention stacks schematic diagram；
Figure 10 be the present invention assemble method in the structural representation of poststack battery core and insulative inserts；
Figure 11 is the details enlarged drawing after the insulative inserts use of the present invention；
Embodiment
In order that technical scheme and advantage are clearer, below in conjunction with the accompanying drawings with specific embodiment to the present invention
It is described in detail.D
Referring to Fig. 1-3, the lithium battery interior structure of the double core struetures of kind of the present invention, including two battery cores 3, electricity are shown
Core 3 is connected by the lug 5 with top cover 6, and the opposite side of lug 5 is pole plate 4, and both sides lug 5 is fixed with top cover 6, the downside of top cover 6
Safety head 1 is welded with, safety head is connected by laser welding with top cover 6, and the device adds the security performance of battery.
The positive and negative structure of lug knot 5 for connecting battery core 3 is identical, for example, be work shape, can doubling.It is one-shot forming, with top
The welding that connects through of lid 6 is fixed.Preferably, lug 5 close to top cover 6 with fluted (referring to Fig. 4), it is curved to facilitate
Folding.
Wherein, the battery core 3 is that positive/negative plate is formed with hot pressing after membrane winding.
Specifically, two battery cores, 3 pairs of folded thickness are identical with the width of top cover 6, shell 2 is facilitated access for.
Referring to Fig. 5, the position of lug after doubling is fixed using insulative inserts 9.Its specific structure includes matrix part and pole
Ear cut piece 10, top cover cut piece 11, shell divide part 12 and distance piece 13, wherein, lug cut piece 10 its be two it is parallel
Rod-like structure, its front end be crook.Shell divide part 12 includes two bending cuboids, wherein bending cuboid is arranged on
The outside of lug cut piece 10, it is preferable that its downside is chamfering structure, to prevent puncturing barrier film.Top cover cut piece 11 is coupled from above
Between two shell divide parts 12.Distance piece 13 is a square structure, is arranged on the region between two lug cut piece 10.
In use, lug cut piece 10 is inserted into the inner side of lug 5, and the edge of lug 5 is blocked using angle is hooked, for fixing two
The position of side pole ear 5；Top cover cut piece 11 is inserted between lug 5 and top cover 6.Shell divide part 12 fills both sides shell 2 and pole
Space between ear 5.Distance piece 13 is used to be stuck between lug 6 and battery core 3, realizes and fixes.
So insulative inserts 9 dexterously fill the space produced during the assembling of inside battery battery core, can effectively prevent phase
The contact caused to displacement, keeps isolation and gap, it is to avoid battery core and upper lid, side housing short circuit.Preferably, lug cut piece
With certain elastic structure, to facilitate lug cut piece to be hooked on lug, the positioning of insulative inserts 9 is realized.
As shown in 6, preferably in ground structure, described two lug cut piece 10 are splayed arrangement, itself and insulative inserts 9
The distance of matrix part connecting portion is small, and distally distance is big.Such structure can be applicable the lug 6 of different battery sizes no matter
Spacing after lug 6 is bent is big or small, and lug cut piece 10 is adapted to by elastic deformation.
In preferred structure, lug cut piece 10 is cased with a lasso 14, and on the matrix part of the insulative inserts 9
The opening of the exposure lasso part is formed with, is inserted when needing to unload the insulative inserts 9 there is provided screwdriver or miscellaneous part
Enter the opening 15, and promote the lasso 14 forward, lasso, can be by the distal end of lug cut piece 10 in movement forward
To centre stretching, and then cause the crook of lug cut piece 10 to depart from lug, then insulative inserts 9 can be removed with hand.
In addition, distance piece 13 is preferably also made up of elastomeric material, by deforming the space squeezed between lug 6 and battery core,
And frictional force is produced, realize the fixation of insulative inserts 9.
Using said structure design, good convenience can be provided for the assembling of double battery cores, while reducing in battery
The risk of portion's short circuit, improves the uniformity of product.
Illustrate the assemble method of the lithium battery of twin-core structure of the present invention below in conjunction with the accompanying drawings, specifically including following step
Suddenly：
1, according to Fig. 3 orders, successively overlays battery core 3, pole plate 4, lug 5, top cover 6 and with insulation spacer 7, nut 8
In welding tooling.
It is resistance welded after 2 resistance welding machine pre-determined bits.First carry out after pre-determined bit, carry out heating welding.Pad position
Can it be 2 points to multiple spot.
3 welding complete structure as shown in fig. 6, then, as shown in Figure 7 by the internally vertical doubling of the battery core of its both sides,
Make two battery cores overlapping, as square.Its doubling is realized using the groove on lug.
4 by the battery core after doubling as shown in figure 8, press position in figure, and insertion insulative inserts are put into shell.
Set using the above method, can efficiently carry out double battery core assembly workings, while the uniformity of product is controlled, drop
Foreign matter, internal short-circuit risk are mixed into low assembling process.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included in the scope of the protection.
Claims (9)
1. the lithium battery of a kind of pair of core strueture, it is characterised in that：The electric core structure of lithium battery includes two single lithium batteries
Battery core, two battery core stackings, inserts housing after being connected in parallel by positive and negative lug, and also includes insulation connector, filling electricity
The space produced inside pond during battery core assembling.
2. the lithium battery of according to claim 1 pair of core strueture, it is characterised in that：The insulation connector includes matrix
Portion and the lug cut piece extended from matrix part, it is two parallel rod-like structures, and its front end is crook, for limiting
The width positioning of lug processed, plays a part of fixed lug.
3. the lithium battery of according to claim 2 pair of core strueture, it is characterised in that：The insulation connector also includes outer
Shell cut piece, it is two bending cuboids, for filling the space between both sides shell and lug.
4. the lithium battery of according to claim 3 pair of core strueture, it is characterised in that：The insulation connector also includes top
Lid cut piece, its is coupled from above between two shell divide parts, for being inserted between lug and top cover.
5. the lithium battery of according to claim 4 pair of core strueture, it is characterised in that：Bend on the downside of cuboid is chamfering knot
Structure, to prevent puncturing barrier film.
6. the lithium battery of according to claim 4 pair of core strueture, it is characterised in that：Between the insulation connector also includes
Spacing body, is arranged on the region between two lug cut piece.
7. the lithium battery of double core struetures according to claim 1-6, it is characterised in that：Connection battery core positive and negative lug be
Work shape, can doubling.
8. the lithium battery of double core struetures according to claim any one of 1-7, it is characterised in that：Using resistance welding
Mode connects bilateral lug pole plate and battery core, time processing, and does not produce high temperature and foreign matter.
9. the lithium battery of according to claim 8 pair of core strueture, it is characterised in that：Two lug cut piece are splayed
Arrangement, its spacing with insulative inserts matrix part connecting portion is small, and distal end spacing is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710399169.2A CN107317047B (en) | 2017-05-31 | 2017-05-31 | A kind of lithium battery and its battery core assemble method of double core struetures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710399169.2A CN107317047B (en) | 2017-05-31 | 2017-05-31 | A kind of lithium battery and its battery core assemble method of double core struetures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107317047A true CN107317047A (en) | 2017-11-03 |
| CN107317047B CN107317047B (en) | 2019-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710399169.2A Active CN107317047B (en) | 2017-05-31 | 2017-05-31 | A kind of lithium battery and its battery core assemble method of double core struetures |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11598815B2 (en) * | 2018-08-31 | 2023-03-07 | Ningde Amperex Technology Limited | Battery test system and battery test method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5613664A (en) * | 1979-07-13 | 1981-02-10 | Nippon Kogaku Kk <Nikon> | Battery container |
| CN203521512U (en) * | 2013-07-10 | 2014-04-02 | 上海卡耐新能源有限公司 | Single-parallel multiple-serial battery module structure |
| CN204144386U (en) * | 2014-07-31 | 2015-02-04 | 上海比亚迪有限公司 | A kind of electrokinetic cell |
| CN105914332A (en) * | 2016-06-27 | 2016-08-31 | 东莞市卓安精机自动化设备有限公司 | Method and structure for connecting lugs of soft-package lithium battery cell combined bodies |
-
2017
- 2017-05-31 CN CN201710399169.2A patent/CN107317047B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5613664A (en) * | 1979-07-13 | 1981-02-10 | Nippon Kogaku Kk <Nikon> | Battery container |
| CN203521512U (en) * | 2013-07-10 | 2014-04-02 | 上海卡耐新能源有限公司 | Single-parallel multiple-serial battery module structure |
| CN204144386U (en) * | 2014-07-31 | 2015-02-04 | 上海比亚迪有限公司 | A kind of electrokinetic cell |
| CN105914332A (en) * | 2016-06-27 | 2016-08-31 | 东莞市卓安精机自动化设备有限公司 | Method and structure for connecting lugs of soft-package lithium battery cell combined bodies |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11598815B2 (en) * | 2018-08-31 | 2023-03-07 | Ningde Amperex Technology Limited | Battery test system and battery test method |
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| Publication number | Publication date |
|---|---|
| CN107317047B (en) | 2019-06-21 |
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