CN202678471U - Lithium iron phosphate battery - Google Patents
Lithium iron phosphate battery Download PDFInfo
- Publication number
- CN202678471U CN202678471U CN2012202603616U CN201220260361U CN202678471U CN 202678471 U CN202678471 U CN 202678471U CN 2012202603616 U CN2012202603616 U CN 2012202603616U CN 201220260361 U CN201220260361 U CN 201220260361U CN 202678471 U CN202678471 U CN 202678471U
- Authority
- CN
- China
- Prior art keywords
- battery
- lithium cell
- ferric phosphate
- phosphate lithium
- 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.)
- Expired - Fee Related
Links
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title abstract 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 38
- 239000005955 Ferric phosphate Substances 0.000 claims description 31
- 229940032958 ferric phosphate Drugs 0.000 claims description 31
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 31
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000005030 aluminium foil Substances 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 239000007773 negative electrode material Substances 0.000 claims description 3
- 239000007774 positive electrode material Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 abstract description 5
- 238000009834 vaporization Methods 0.000 abstract description 2
- 230000008016 vaporization Effects 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910001868 water Inorganic materials 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910052493 LiFePO4 Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 201000001371 inclusion conjunctivitis Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 206010044325 trachoma Diseases 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
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- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
The utility model discloses a lithium iron phosphate battery. The battery comprises a cylinder-shaped housing, a cap and a cylindrical battery cell accommodated in the hosing, wherein the height of the battery cell is L; the battery cell comprises a first end part electrically connected to the bottom of the hosing, a second end part electrically connected to the cap and a channel penetrating the first end part and the second end part; a hollow pipeline extending from the first end part to the second end part is formed in the channel; and the length of the pipeline is H, and H is smaller than or equal to 4L/5 and larger than or equal to 1L/2. Compared with the prior art, the lithium iron phosphate battery has the advantages that as the steel pipeline is arranged in the battery cell of the lithium iron phosphate battery, excellent heat conduction between the two ends of the battery can still be guaranteed when the battery is in an abnormal working state, and if the electrolyte vaporization caused by overtemperature of the bottom of the battery occurs, the vaporized objects can enter the top of the battery cell through the pipeline to ensure the pressure equalization at the two ends of the battery cell, thereby ensuring security work of the battery.
Description
[technical field]
The utility model relates to new energy field, relates in particular to a kind of ferric phosphate lithium cell of electric vehicle.
[background technology]
Energy crisis, shortage of resources, environmental pollution are the three large severe challenges that human survival faces, and seeking secondary resource clean, renewable, resource-conserving is the vital task that realizes that human social will solve.
Raising along with expanding economy and living standards of the people, people are more and more strong to the battery requirements of high-energy-density, lithium ion battery have operating voltage height, energy density large, have extended cycle life, the advantages such as self-discharge rate is little, environmental protection, become the trend of secondary cell.Now be widely used in the portable electricity consuming productses such as wireless telecommunications, digital camera, and tentatively in special dimension extensive uses such as aviation, national defence.
LiFePO4 is a kind of positive electrode of making lithium battery, and not only specific capacity is high, and particularly the outstanding feature of superior, the good cycle of its Heat stability is good, security performance is considered to the desirable making material of lithium battery anode.
Although ferric phosphate lithium cell has the unrivaled series of advantages of other materials, its part that also comes with some shortcomings, these weak points mainly are relevant with the structure of traditional lithium battery.Although traditional lithium battery is equipped with safety valve at the block place, if but battery bottom is short-circuited, the passage that the heat when then thereby the bottom can produce a large amount of heats and cause the battery core at place, bottom to expand rapidly initial conditions when high temperature between battery core bottom and the top is transmitted stops up, like this, the heat of battery bottom just can not in time pass, finally cause over-heat at the bottom sharply to expand, pressure sharply raises even blasts.
In view of above drawback, be necessary to provide a kind of new ferric phosphate lithium cell to overcome defects in fact.
[utility model content]
The purpose of this utility model is to overcome above-mentioned defective, and a kind of ferric phosphate lithium cell simple, that security performance is high of making is provided.
To achieve these goals, the utility model provides a kind of ferric phosphate lithium cell, comprise cylindrical shape housing, block a shot and be contained in cylinder battery core in the housing, the height of described battery core is L, it comprises the first end that is electrically connected to housing bottom and the second end that is electrically connected to block, described battery core also is provided with through the passage of first end and the second end, in described passage, be provided with the hollow pipe that extends to the second end from first end, the length of described pipeline is H, and 1L/2≤H≤4L/5.
As a kind of improvement of the utility model ferric phosphate lithium cell, described battery core is that the positive and negative plate of mutual insulating isolation twines formation.
As a kind of improvement of the utility model ferric phosphate lithium cell, described hollow pipe is hollow cylindrical, and its external diameter is consistent with the passage internal diameter.
As a kind of improvement of the utility model ferric phosphate lithium cell, a port of described hollow pipe shrinks gradually, and it is horn-like that the another port is.
As a kind of improvement of the utility model ferric phosphate lithium cell, described positive plate has plus plate current-collecting body and the positive electrode active material that is coated on the plus plate current-collecting body; Described negative plate has negative current collector and the negative electrode active material that is coated on the negative current collector.
As a kind of improvement of the utility model ferric phosphate lithium cell, described plus plate current-collecting body adopts aluminium foil to make, and negative current collector adopts Copper Foil to make.
As a kind of improvement of the utility model ferric phosphate lithium cell, be welded with respectively lug on the described positive and negative plate, described lug welds together with housing bottom and block respectively.
As a kind of improvement of the utility model ferric phosphate lithium cell, described block is provided with safety valve.
As a kind of improvement of the utility model ferric phosphate lithium cell, described pipeline is that steel material is made.
Compared to prior art, the utlity model has following advantage: be installed on a steel pipe in the battery core of the utility model ferric phosphate lithium cell, this pipeline can guarantee that battery is when operation irregularity, can also keep good heat conduction between the two ends of battery core, if and because of the excess Temperature of battery core bottom, caused the electrolyte vaporization, then described vaporizer also could enter by pipeline the top of battery core, guarantee place, the two ends isostasy of battery core, thereby guarantee the trouble free service of battery.
[description of drawings]
Fig. 1 is the three-dimensional exploded view (battery core is not installed) of the utility model ferric phosphate lithium cell;
Fig. 2 is the structural representation of the plus plate current-collecting body of the utility model ferric phosphate lithium cell;
Fig. 3 is the battery core generalized section of the utility model ferric phosphate lithium cell;
Fig. 4 is the pipeline configuration schematic diagram that relates to of the utility model ferric phosphate lithium cell.
[embodiment]
Please refer to Fig. 1 to shown in Figure 4, the utility model is described in further detail below in conjunction with the accompanying drawing illustrated embodiment.
The manufacture craft of the utility model ferric phosphate lithium cell 100 may further comprise the steps: 1) batching, 2) coating, 3) roll-in, 4) the battery pole piece making, 5) baking, 6) reel 7) the tubulature road, and 8) Laser Welding, 9) fluid injection, 10) change into 11) partial volume;
1) batching:
The anode sizing agent of preparation take water as medium, material requested has: water system glue, LiFePO4, the superconduction carbon black, electrically conductive graphite, lithium salts, water system glue is added to the water carries out agitation and dilution, add superconduction carbon black and electrically conductive graphite and stir, add LiFePO4 at last and lithium salts stirs into slurry;
The cathode size of preparation take water as medium, material requested has: graphite, sodium carboxymethylcellulose, the superconduction carbon black, water system glue is added to the water stirring with sodium carboxymethylcellulose, after staticly settling, adds water system glue, superconduction carbon black, and graphite stirs into slurry;
2) coating
Positive pole after filtering and cathode size are coated in respectively on the corresponding plus plate current-collecting body 21 and negative current collector equably, and reserve uncoated zone, as the lug district, then put into the coating machine oven baking, the linear velocity plus plate current-collecting body of coating is 4.5 meters of per minutes, negative current collector is 5 meters of per minutes, after the coating baking is finished, each pole piece is cut into slices; In the utility model, described plus plate current-collecting body adopts aluminium foil to make, and negative current collector adopts Copper Foil to make, and the slurry that coating is adopted is respectively positive electrode active material and negative electrode active material.
3) roll-in
Roll process, with the positive plate roll-in to thickness at 115 μ m-140 μ m, compacted density is at 1.9g/cm
3-2.3g/cm
3; With the negative plate roll-in to thickness at 75 μ m-90 μ m, compacted density is at 1.3g/cm
3-1.6g/cm
3
4) battery pole piece is made;
Positive plate is cut into the rectangular sheet with three lugs, and negative pole is cut into the rectangular sheet with three lugs;
5) baking
Section is toasted, baking is 24 hours in vacuum oven, vacuum degree is not less than-0.08Mpa, and baking temperature is 100 degree, every ventilation in 2-4 hour once, kept 30 minutes after the ventilation, and then vacuumize, stoving time finishes, and temperature is reduced to below 45 degree, baking box is taken out in section, then changed over to subsequent processing.
6) reel
Positive/negative plate is placed in the groove of up-coiler, reels, the coiling height of formation is the cylindrical shape of L.In winding process, must guarantee that the two is that insulation is isolated.The battery core 20 of described cylindrical shape can be divided into first end 23 and the second end 24, and it also is provided with the passage 22 through first end and the second end, with adhesive tape battery core is twined a circle afterwards.
7) tubulature road
Get the hollow pipe 40 that is hollow cylindrical, the length of described hollow pipe 40 is H, and 1L/2≤H≤4L/5.The passage of described pipeline 40 from battery core first end 23 inserted until get final product in the passage 22 that all submerges.
Certainly, in Practical manufacturing, in order to prevent to slide up and down after hollow cylindrical from inserting passage, so, in when design, not only can require the external diameter of hollow pipe 40 and passage 22 internal diameters are designed to consistent, the end port 41 of hollow pipe 40 can also be designed and be horn-like.For the convenience in tubulature road, the shape that usually also the port 42 of the insertion end of hollow pipe is designed to shrink gradually.
8) Laser Welding
Battery core 20 is packed in the aluminium casing 10, then use ultrasonic welding machine with the bottom of negative pole lug welding to housing 10, with electric resistance welding positive pole is soldered to again the safety valve position of block 30.In welding process, guarantee to weld smooth, without trachoma, rosin joint.
9) fluid injection
Battery liquid-filling adopts semi-automatic vacuum liquid injecting machine fluid injection, passes into high-purity argon gas in the time of fluid injection, and the reservoir quantity of lithium ion battery needs according to its calculation of capacity, and its reservoir quantity is about 7g/Ah; The electrolyte that adopts is LiPF6/EC, DMC, the EMC of 1M, and the environment control of fluid injection is extremely important, so need to finish fluid injection in glove box, fluid injection is injected from the fluid injection of battery container usually.
10) change into
Formation process must disposablely be finished incessantly, and changing into curve should be smoothly connected, and Current Control is at 0.1A/30min, 0.25A/120min, 0.35A/300min.
11) partial volume
The battery that the electrical property indices is all met technological requirement separates with the battery that every electrical performance indexes does not reach technological requirement, inserts in the storehouse respectively.
The distinguishing feature that the utility model adopts ferric phosphate lithium cell 100 that above-mentioned technique makes and traditional lithium battery to have is: although traditional lithium battery also is to cover block after the cylinder battery core is housed in housing again, but, traditional lithium battery only relies on the path that runs through battery core bottom and top when forming battery core to guarantee bottom the battery core and the thermal cycle between the top, yet, in actual use, if the battery core short circuit of bottom occurs, then the battery core of bottom just can expand rapidly and stop up any path that leads to the battery core top, causing the bottom to gather a large amount of heats can't discharge, electrolyte liquefies rapidly, even the accident of can blasting.But owing in battery core 20 of the present utility model, inserted the pipeline 40 of a steel, thereby the first end 23 that can guarantee battery core 20 is formed through thermal cycle all the time with the second end 24, even and because the temperature of battery core 20 bottoms acutely rises, cause the electrolyte of battery core 20 bottoms to liquefy rapidly, so aforesaid liquefied substance also can enter the top of battery core and finally wash safety valve open by pipeline 40, has guaranteed the fail safe that battery uses.
A kind of ferric phosphate lithium cell of the utility model, be not restricted to described in specification and the execution mode, therefore for the personnel of familiar field, can easily realize additional advantage and modification, so in the situation of the spirit and scope that do not deviate from the universal that claim and equivalency range limit, the utility model is not limited to specific details, representational equipment and illustrates here and the examples shown of describing.
Claims (9)
1. ferric phosphate lithium cell, it is characterized in that: it comprise cylindrical shape housing, block a shot and be contained in cylinder battery core in the housing, the height of described battery core is L, it comprises the first end that is electrically connected to housing bottom and the second end that is electrically connected to block, described battery core also is provided with through the passage of first end and the second end, be provided with the hollow pipe that extends to the second end from first end in described passage, the length of described pipeline is H, and 1L/2≤H≤4L/5.
2. ferric phosphate lithium cell as claimed in claim 1 is characterized in that: described battery core is that the positive and negative plate of mutual insulating isolation twines and forms.
3. ferric phosphate lithium cell as claimed in claim 1, it is characterized in that: described hollow pipe is hollow cylindrical, and its external diameter is consistent with the passage internal diameter of battery core.
4. ferric phosphate lithium cell as claimed in claim 3, it is characterized in that: a port of described hollow pipe shrinks gradually, and it is horn-like that the another port is.
5. ferric phosphate lithium cell as claimed in claim 2 is characterized in that: described positive plate has plus plate current-collecting body and is coated on positive electrode active material on the plus plate current-collecting body; Described negative plate has negative current collector and the negative electrode active material that is coated on the negative current collector.
6. ferric phosphate lithium cell as claimed in claim 5 is characterized in that: described plus plate current-collecting body adopts aluminium foil to make, and negative current collector adopts Copper Foil to make.
7. ferric phosphate lithium cell as claimed in claim 2, it is characterized in that: be welded with respectively lug on the described positive and negative plate, described lug welds together with housing bottom and block respectively.
8. ferric phosphate lithium cell as claimed in claim 1, it is characterized in that: described block is provided with safety valve.
9. such as the described arbitrary ferric phosphate lithium cell of claim 1 to 8, it is characterized in that: described pipeline is that steel material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202603616U CN202678471U (en) | 2012-06-04 | 2012-06-04 | Lithium iron phosphate battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202603616U CN202678471U (en) | 2012-06-04 | 2012-06-04 | Lithium iron phosphate battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678471U true CN202678471U (en) | 2013-01-16 |
Family
ID=47499351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202603616U Expired - Fee Related CN202678471U (en) | 2012-06-04 | 2012-06-04 | Lithium iron phosphate battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678471U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456979A (en) * | 2012-06-04 | 2013-12-18 | 深圳市沃特玛电池有限公司 | Lithium iron phosphate battery |
| CN108666631A (en) * | 2017-03-28 | 2018-10-16 | 三洋电机株式会社 | The manufacturing method of secondary cell |
-
2012
- 2012-06-04 CN CN2012202603616U patent/CN202678471U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456979A (en) * | 2012-06-04 | 2013-12-18 | 深圳市沃特玛电池有限公司 | Lithium iron phosphate battery |
| CN103456979B (en) * | 2012-06-04 | 2017-07-07 | 深圳市沃特玛电池有限公司 | Ferric phosphate lithium cell |
| CN108666631A (en) * | 2017-03-28 | 2018-10-16 | 三洋电机株式会社 | The manufacturing method of secondary cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electromobile with lithium ferric phosphate cell Effective date of registration: 20141218 Granted publication date: 20130116 Pledgee: Export Import Bank of China Pledgor: Shenzhen Optimum Battery Co.,Ltd.|Zhao Bing Registration number: 2014990001097 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20171025 Granted publication date: 20130116 Pledgee: Export Import Bank of China Pledgor: Shenzhen Optimum Battery Co.,Ltd.|Zhao Bing Registration number: 2014990001097 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180428 Granted publication date: 20130116 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210428 Granted publication date: 20130116 |
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Effective date of registration: 20210428 Granted publication date: 20130116 |
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Date of cancellation: 20220604 Granted publication date: 20130116 |
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| DD01 | Delivery of document by public notice |
Addressee: Ke Hongtao Document name: Notice of End of Suspension Proceedings |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20180604 |
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