CN205050945U - Electric core structure of lithium battery - Google Patents
Electric core structure of lithium battery Download PDFInfo
- Publication number
- CN205050945U CN205050945U CN201520754236.4U CN201520754236U CN205050945U CN 205050945 U CN205050945 U CN 205050945U CN 201520754236 U CN201520754236 U CN 201520754236U CN 205050945 U CN205050945 U CN 205050945U
- Authority
- CN
- China
- Prior art keywords
- collection sheet
- flow collection
- sheet
- lithium
- collecting net
- 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.)
- Expired - Fee Related
Links
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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses an electric core structure of lithium battery, including positive plate, negative pole piece and diaphragm, it is folding that continuous Z shape is personally submitted to diaphragm transversal, and the cartridge is in the department of bending of the folding both sides of the Z of diaphragm shape respectively for positive plate and negative pole piece, and unfamiliar one side towards the negative pole piece is equipped with inorganic coating, the positive plate includes first lithium piece, first album of flow net and first mass flow piece, and first mass flow piece includes first main mass flow piece and supplementary set flow, the negative pole piece includes second lithium piece, second collection flow net and second mass flow piece, and second mass flow piece includes second owner mass flow piece and branch's mass flow piece. The utility model discloses make the diaphragm have good high temperature resistance ability, solve the problem of original unfamiliar high temperature shrink, prevent the battery short circuit, the nickel strap well contacts with collection flow net with the lithium piece, and the mass flow effect is compared the mass flow piece of arranging at will and is had obvious advantage, this electricity core structure capacitance is big, and the security is high, and it is effectual to circulate, and lamination mode simple process is not high to the facility request.
Description
Technical field
The utility model relates to lithium battery association area, specifically a kind of electric core structure of lithium battery.
Background technology
The features such as lithium ion battery has that operating voltage is high, energy density is large, have extended cycle life, self discharge is little, memory-less effect, environmental friendliness, become the ideal mobile accumulation power supply of the equipment such as communication, electric tool, motor vehicle, space flight and aviation at present, had broad application prospects.
The structure of lithium ion battery cell mainly contains takeup type and stacked.Takeup type battery core is that the positive/negative plate of strip is wrapped membrane coil and made, and this structure fabrication efficiency is high, and consistency is good; But due to winded length of a film, electron transfer distance, cause the internal resistance of battery higher, high-rate discharge ability is poor.Lamination type electric core is that the positive/negative plate of sheet folds code together, and separate with barrier film between both positive and negative polarity, the current density of this structure electrode is high, is suitable for high-multiplying power discharge, can make high capacity cell; But positive/negative plate and barrier film are simply superimposed together, the otherness of interface contact is comparatively large, causes battery later cycles performance, high rate performance poor.Barrier film many employings microporous polyolefin film of current high-capacity lithium-ion power battery, it has good chemical stability and mechanical strength, there is when uniform temperature closed pore effect, but when battery temperature is continued above 100 DEG C, barrier film there will be significant shrinkage, causes positive/negative plate directly contact thus cause battery short circuit.
And the positive plate of existing lithium ion battery and negative plate often only have a flow collection sheet, therefore, catchment effect is not ideal enough.
Utility model content
The purpose of this utility model is to provide a kind of electric core structure of lithium battery, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of electric core structure of lithium battery, comprises positive plate, negative plate and barrier film, and the cross section of described barrier film is continuous Z-shaped folding, and positive plate and negative plate are inserted into the bending part of the Z-shaped folding both sides of barrier film respectively, and barrier film is provided with inorganic coating towards the one side of negative plate; Described positive plate comprises the first lithium sheet, the first currect collecting net and the first flow collection sheet, first currect collecting net and the first lithium sheet are crimped together, first flow collection sheet is arranged on outside the first currect collecting net, and by rivet, the first flow collection sheet, the first currect collecting net and the first lithium sheet are riveted into an entirety, described first flow collection sheet comprises the first main flow collection sheet and supplementary set flow; Described negative plate comprises the second lithium sheet, the second currect collecting net and the second flow collection sheet, second currect collecting net and the second lithium sheet are crimped together, second flow collection sheet is arranged on outside currect collecting net, and by rivet, the second flow collection sheet, the second currect collecting net and the second lithium sheet are riveted into an entirety, described second flow collection sheet comprises the second main flow collection sheet and Bifurcation Set flow; Described first main flow collection sheet and the second main flow collection sheet are L shape flow collection sheet, and be formed by connecting by first paragraph is vertical with second segment, first paragraph stretches out from the side of the first currect collecting net and the first lithium sheet and the second currect collecting net and the second lithium sheet, one end that the first paragraph of the first main flow collection sheet stretches out is connected with anode ear, and one end that the second main flow collection sheet first paragraph stretches out is connected with negative electrode lug; The second segment of the first main flow collection sheet is transversely arranged on the bottom outside the second currect collecting net, and the second segment of the second main flow collection sheet is transversely arranged on the middle part outside the second currect collecting net; Described supplementary set flow is connected with the first main flow collection sheet, and supplementary set flow and the first main flow collection sheet form rectangular-shaped afflux module in the scope of the first currect collecting net and the first lithium sheet; Described Bifurcation Set flow is bar shaped flow collection sheet; One end of Bifurcation Set flow is connected with the second segment of the second main flow collection sheet is vertical, and Bifurcation Set flow is divided into two groups of both sides being arranged in the second main flow collection sheet, and the Bifurcation Set flow in each group of branches flow collection sheet is equidistantly arranged; Described anode ear and negative electrode lug are positioned at the same side of core strueture; Described anode ear overlaps in core strueture; Described negative electrode lug overlaps in core strueture.
As further program of the utility model: described first main flow collection sheet only has one end to be connected with supplementary set flow, and the other end does not connect.
As the utility model further scheme: described Bifurcation Set flow is 8,8 Bifurcation Set flows are divided into 2 groups, and each branch flow collection sheet comprises 4 Bifurcation Set flows.
As the utility model further scheme: described first flow collection sheet is provided with multiple first riveted holes, the second flow collection sheet is provided with multiple second riveted holes.
As the utility model further scheme: described first flow collection sheet and the second flow collection sheet are nickel strap, nickel strap have equally distributed pit.
Compared with prior art, the beneficial effects of the utility model are: the utility model adopts Z-shaped foldable structure, and the one or both sides of barrier film are provided with inorganic coating, make barrier film have good resistance to elevated temperatures, solve the problem of original barrier film high-temperature shrinkage, prevent battery short circuit; The collector-shoe gear that its positive plate adopts main flow collection sheet and supplementary set flow to combine, the rectangular shape of this collector-shoe gear, it is a kind of shape of substantial symmetry, than only adopting a slice flow collection sheet, catchment effect is better, nickel strap has equally distributed pit, make nickel strap and lithium sheet and currect collecting net good contact, currect collecting net also can improve the effect of afflux; The collector-shoe gear that its negative plate adopts main flow collection sheet and Bifurcation Set flow to combine, effectively can strengthen catchment effect, nickel strap has equally distributed pit, make nickel strap and lithium sheet and currect collecting net good contact, currect collecting net also can improve the effect of afflux, and the connected mode of main flow collection sheet and Bifurcation Set flow is herringbone, namely have employed bionic design, therefore, catchment effect is compared the flow collection sheet arbitrarily arranged and is had clear superiority; This core strueture capacitance is large, and fail safe is high, and circulating effect is good, and lamination process technique is simple, not high to equipment requirement, is applicable to producing Large Copacity high security lithium ion battery.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric core structure of lithium battery;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the structural representation of positive plate in electric core structure of lithium battery;
Fig. 5 is the profile of Fig. 4;
Fig. 6 is the structural representation of negative plate in electric core structure of lithium battery;
Fig. 7 is the profile of Fig. 6;
In figure: 1-positive plate, the main flow collection sheet of 11-first, 12-first currect collecting net, 13-first lithium sheet, the flow of 14-supplementary set, 15-first riveted holes, 2-negative plate, the main flow collection sheet of 21-second, 22-second currect collecting net, 23-second lithium sheet, the flow of 24-Bifurcation Set, 25-second riveted holes, 3-barrier film, 4-inorganic coating, 5-anode ear, 6-negative electrode lug.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1-7, a kind of electric core structure of lithium battery, comprise positive plate 1, negative plate 2 and barrier film 3, the cross section of described barrier film 3 is continuous Z-shaped folding, positive plate 1 and negative plate 2 are inserted into the bending part of the Z-shaped folding both sides of barrier film 3 respectively, and barrier film 3 is provided with inorganic coating 4 towards the one side of negative plate 2; Described positive plate 1 comprises the first lithium sheet 13, first currect collecting net 12 and the first flow collection sheet, first currect collecting net 12 and the first lithium sheet 13 are crimped together, first flow collection sheet is arranged on outside the first currect collecting net 12, and by rivet, the first flow collection sheet, the first currect collecting net 12 and the first lithium sheet 13 are riveted into an entirety, described first flow collection sheet comprises the first main flow collection sheet 11 and supplementary set flow 14; Described negative plate 2 comprises the second lithium sheet 23, second currect collecting net 22 and the second flow collection sheet, second currect collecting net 22 and the second lithium sheet 23 are crimped together, second flow collection sheet is arranged on outside currect collecting net, and by rivet, the second flow collection sheet, the second currect collecting net 22 and the second lithium sheet 23 are riveted into an entirety, described second flow collection sheet comprises the second main flow collection sheet 21 and Bifurcation Set flow 24; Described anode ear 5 and negative electrode lug 6 are positioned at the same side of core strueture; Described anode ear 5 overlaps in core strueture; Described negative electrode lug 6 overlaps in core strueture.Described barrier film 3 is PP (polypropylene) monofilm, and the material of main part of described inorganic coating 4 is Al
2o
3.
Described first main flow collection sheet 11 and the second main flow collection sheet 21 are L shape flow collection sheet, and be formed by connecting by first paragraph is vertical with second segment, first paragraph stretches out from the side of the first currect collecting net 12 and the first lithium sheet 13 or the second currect collecting net 22 and the second lithium sheet 23, one end that the first paragraph of the first main flow collection sheet 11 stretches out is connected with anode ear 5, and one end that the second main flow collection sheet first paragraph stretches out is connected with negative electrode lug 6; The second segment of the first main flow collection sheet 11 is transversely arranged on the bottom outside the second currect collecting net 12, and the second segment of the second main flow collection sheet 21 is transversely arranged on the middle part outside the second currect collecting net 22.
Described supplementary set flow 14 is connected with the first main flow collection sheet 11; Supplementary set flow 14 and the first main flow collection sheet 11 form rectangular-shaped afflux module in the scope of the first currect collecting net 12 and the first lithium sheet 13; Described Bifurcation Set flow 24 is bar shaped flow collection sheet; The second segment of all main with second flow collection sheet 21 in one end of multi-disc Bifurcation Set flow 24 is vertical to be connected, and multi-disc Bifurcation Set flow 24 is divided into two groups of both sides being arranged in the second main flow collection sheet 21, and the multi-disc Bifurcation Set flow 24 in each group of branches flow collection sheet 24 is equidistantly arranged.
Described first main flow collection sheet 11 only has one end to be connected with supplementary set flow 14, and the other end does not connect.
Described Bifurcation Set flow 24 is 8, and 8 Bifurcation Set flows 24 are divided into 2 groups, and each branch flow collection sheet comprises 4 Bifurcation Set flows 24.
Described first flow collection sheet is provided with multiple first riveted holes 15, second flow collection sheet and is provided with multiple second riveted holes 25.
Described first flow collection sheet and the second flow collection sheet are nickel strap, nickel strap have equally distributed pit.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, can also makes a variety of changes under the prerequisite not departing from this patent aim.
Claims (5)
1. an electric core structure of lithium battery, comprise positive plate, negative plate and barrier film, it is characterized in that, the cross section of described barrier film is continuous Z-shaped folding, positive plate and negative plate are inserted into the bending part of the Z-shaped folding both sides of barrier film respectively, and barrier film is provided with inorganic coating towards the one side of negative plate; Described positive plate comprises the first lithium sheet, the first currect collecting net and the first flow collection sheet, first currect collecting net and the first lithium sheet are crimped together, first flow collection sheet is arranged on outside the first currect collecting net, and by rivet, the first flow collection sheet, the first currect collecting net and the first lithium sheet are riveted into an entirety, described first flow collection sheet comprises the first main flow collection sheet and supplementary set flow; Described negative plate comprises the second lithium sheet, the second currect collecting net and the second flow collection sheet, second currect collecting net and the second lithium sheet are crimped together, second flow collection sheet is arranged on outside currect collecting net, and by rivet, the second flow collection sheet, the second currect collecting net and the second lithium sheet are riveted into an entirety, described second flow collection sheet comprises the second main flow collection sheet and Bifurcation Set flow; Described first main flow collection sheet and the second main flow collection sheet are L shape flow collection sheet, and be formed by connecting by first paragraph is vertical with second segment, first paragraph stretches out from the side of the first currect collecting net and the first lithium sheet and the second currect collecting net and the second lithium sheet, one end that the first paragraph of the first main flow collection sheet stretches out is connected with anode ear, and one end that the second main flow collection sheet first paragraph stretches out is connected with negative electrode lug; The second segment of the first main flow collection sheet is transversely arranged on the bottom outside the second currect collecting net, and the second segment of the second main flow collection sheet is transversely arranged on the middle part outside the second currect collecting net; Described supplementary set flow is connected with the first main flow collection sheet, and supplementary set flow and the first main flow collection sheet form rectangular-shaped afflux module in the scope of the first currect collecting net and the first lithium sheet; Described Bifurcation Set flow is bar shaped flow collection sheet; One end of Bifurcation Set flow is connected with the second segment of the second main flow collection sheet is vertical, and Bifurcation Set flow is divided into two groups of both sides being arranged in the second main flow collection sheet, and the Bifurcation Set flow in each group of branches flow collection sheet is equidistantly arranged; Described anode ear and negative electrode lug are positioned at the same side of core strueture; Described anode ear overlaps in core strueture; Described negative electrode lug overlaps in core strueture.
2. electric core structure of lithium battery according to claim 1, is characterized in that, described first main flow collection sheet only has one end to be connected with supplementary set flow, and the other end does not connect.
3. electric core structure of lithium battery according to claim 1 and 2, is characterized in that, described Bifurcation Set flow is 8, and 8 Bifurcation Set flows are divided into 2 groups, and each branch flow collection sheet comprises 4 Bifurcation Set flows.
4. electric core structure of lithium battery according to claim 3, is characterized in that, described first flow collection sheet is provided with multiple first riveted holes, and the second flow collection sheet is provided with multiple second riveted holes.
5. the electric core structure of lithium battery according to claim 1 or 2 or 4, is characterized in that, described first flow collection sheet and the second flow collection sheet are nickel strap, nickel strap have equally distributed pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520754236.4U CN205050945U (en) | 2015-09-25 | 2015-09-25 | Electric core structure of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520754236.4U CN205050945U (en) | 2015-09-25 | 2015-09-25 | Electric core structure of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205050945U true CN205050945U (en) | 2016-02-24 |
Family
ID=55344490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520754236.4U Expired - Fee Related CN205050945U (en) | 2015-09-25 | 2015-09-25 | Electric core structure of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205050945U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105563138A (en) * | 2016-03-15 | 2016-05-11 | 温州智元知识产权管理有限公司 | Welding machine for cylindrical lithium battery current collector |
| CN105619087A (en) * | 2016-03-15 | 2016-06-01 | 温州智元知识产权管理有限公司 | Rotary table type cylindrical lithium battery collector piece welding machine reliable in work |
| CN111193076A (en) * | 2019-12-31 | 2020-05-22 | 惠州亿纬锂能股份有限公司 | Metal lithium battery |
| CN111668524A (en) * | 2020-06-23 | 2020-09-15 | 北京成功领行汽车技术有限责任公司 | Fuel cell and control system and control method thereof |
-
2015
- 2015-09-25 CN CN201520754236.4U patent/CN205050945U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105563138A (en) * | 2016-03-15 | 2016-05-11 | 温州智元知识产权管理有限公司 | Welding machine for cylindrical lithium battery current collector |
| CN105619087A (en) * | 2016-03-15 | 2016-06-01 | 温州智元知识产权管理有限公司 | Rotary table type cylindrical lithium battery collector piece welding machine reliable in work |
| CN111193076A (en) * | 2019-12-31 | 2020-05-22 | 惠州亿纬锂能股份有限公司 | Metal lithium battery |
| CN111193076B (en) * | 2019-12-31 | 2021-11-09 | 惠州亿纬锂能股份有限公司 | Metal lithium battery |
| CN111668524A (en) * | 2020-06-23 | 2020-09-15 | 北京成功领行汽车技术有限责任公司 | Fuel cell and control system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205050945U (en) | Electric core structure of lithium battery | |
| CN105529486A (en) | Preparation method for flexible winding vanadium battery | |
| CN102916153B (en) | Unpaired weldment lead-acid battery pack | |
| CN203445193U (en) | Secondary battery with mixed ions | |
| CN102881944A (en) | Flexibly packaged lithium ion power battery | |
| CN105870511B (en) | A kind of manufacturing method of lithium ion laminated battery battery core | |
| CN205388994U (en) | Cylinder power lithium ion battery | |
| CN103427111B (en) | A kind of lithium-ion energy storage battery and manufacture method thereof | |
| CN202917600U (en) | Aluminum-plastic packed high-power lithium ion battery | |
| CN110911172B (en) | Soft packet of ultracapacitor system module | |
| CN202042561U (en) | Lithium power battery module | |
| CN115986052A (en) | High-capacity winding type battery and preparation method thereof | |
| CN203481326U (en) | Battery cell structure of large-capacity lithium ion battery | |
| CN205944278U (en) | High power polymer lithium ion battery extremely assembles and puts | |
| CN201877491U (en) | Novel high-capacity lithium ion battery | |
| CN204130625U (en) | A kind of assembly type pole piece of high power laminated lithium ion battery of safe short-circuit-proof | |
| CN202363528U (en) | Storage battery | |
| CN204441372U (en) | laminated type lithium ion battery and battery pack | |
| CN103072355A (en) | Novel inorganic membrane and preparation method thereof | |
| CN203434245U (en) | Lithium-ion energy storage battery | |
| CN208767406U (en) | All-solid-state battery | |
| CN201601189U (en) | Lithium ion battery with multiple electrodes led out reversely | |
| CN102280606A (en) | Insulating protection pad inside energy power type lithium ion battery | |
| CN202523782U (en) | Battery cell and winding-type battery | |
| CN203339252U (en) | Assembling structure for battery cores of flexible package lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20190925 |