CN102290596A - Lithium-ion power battery - Google Patents
Lithium-ion power battery Download PDFInfo
- Publication number
- CN102290596A CN102290596A CN2011102076266A CN201110207626A CN102290596A CN 102290596 A CN102290596 A CN 102290596A CN 2011102076266 A CN2011102076266 A CN 2011102076266A CN 201110207626 A CN201110207626 A CN 201110207626A CN 102290596 A CN102290596 A CN 102290596A
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- China
- Prior art keywords
- lithium
- battery
- ion
- louvre
- plate
- 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.)
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 10
- 229910001416 lithium ion Inorganic materials 0.000 title abstract description 10
- 239000003792 electrolyte Substances 0.000 claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N NMP Substances CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
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- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a lithium-ion power battery, which comprises a battery shell. A cathode plate, an anode plate, a diaphragm and an electrolyte are packaged in the battery shell; the diaphragm is arranged between the cathode plate and the anode plate; the cathode plate, the anode plate and the diaphragm are fully immersed in the electrolyte; and heat dissipation structures are arranged on the cathode plate and the anode plate. By the invention, internal heat dissipation of the lithium-ion power battery can be effectively improved, the potential safety hazard of the battery is solved, and the power performance and the safety performance of electromobile are further ensured.
Description
Technical field
The present invention relates to the lithium ion battery field, be specifically related to a kind of lithium-ion-power cell.
Background technology
Plurality of advantages such as compare with lead-acid battery and Ni-MH battery etc., lithium ion battery has the specific energy height, and the operating voltage height has extended cycle life, and environment-friendly function is good, but there is the problem of inside battery weak heat-dissipating in lithium-ion-power cell.Because lithium ion battery electrolyte is an organic electrolyte, the flash-point of electrolyte and boiling point are all very low, just easily decompose at a lower temperature; And because the lithium-ion-power cell internal heat dissipating is poor, internal temperature of battery is easy to rise to the flash-point and the boiling point of electrolyte, thereby causes lithium ion battery electrolyte to decompose.Electrolyte will produce a large amount of gases after inside battery decomposes, cause cell internal pressure sharply to rise, and finally cause battery explosion, make lithium-ion-power cell in use have security hidden trouble.And existing lithium-ion-power cell generally all is to be used for electric automobiles, because electric vehicle lithium ion battery volume is big, capacity is big, it is many that car load moves required electrokinetic cell quantity, thereby the security performance of battery directly influences the power performance and the security performance of vehicle.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of inside battery perfect heat-dissipating is provided, and then can guarantee the lithium-ion-power cell of electric powered motor performance and security performance.
To achieve these goals, the technical solution used in the present invention is:
Described lithium-ion-power cell comprises battery container, and described battery container inside is packaged with positive plate, negative plate, barrier film and electrolyte; Described barrier film is arranged between described positive plate and the negative plate; Described electrolyte fully soaks into described positive plate, negative plate and barrier film; On described positive plate and negative plate, be provided with radiator structure.
Described radiator structure is the louvre of being located on described positive plate and the negative plate.
Described louvre is arranged at the center of described positive plate and negative plate.
The position of the louvre on described positive plate and the negative plate is corresponding.
The area of described louvre is one of percentage of described positive plate and negative plate area.
Described louvre is a through hole, and described louvre can be circle, rectangle and shape that all can be effective, is to guarantee the processing technology requirement, and described louvre be a circle.
Described lithium-ion-power cell is the stacked electrokinetic cell of square.
Beneficial effect of the present invention is: described lithium-ion-power cell, and by on positive plate and negative plate radiator structure being set, the heat dispersion of lithium-ion-power cell inside accesses effective improvement; The inside battery heat can effectively distribute, and internal temperature of battery effectively reduces and can be lower than electrolytical flash-point and boiling point, can prevent that electrolyte from decomposing, and solves the security hidden trouble of battery, and then guarantees the power performance and the security performance of electric automobile.Simultaneously, the technology of described radiator structure is simple, can keep original battery production technology constant, just does small change on pole piece, and is simple to operation, and can effectively control production cost.
Description of drawings
Below the content of each width of cloth accompanying drawing expression of specification of the present invention and the mark among the figure are made brief description:
Fig. 1 is the structural representation of lithium ion power battery cathode sheet of the present invention;
Fig. 2 is the structural representation of lithium ion power cell cathode sheet of the present invention;
Mark among the above-mentioned figure is:
1, positive plate, 2, negative plate, 3, radiator structure.
Embodiment
Contrast accompanying drawing below, the description by to optimum embodiment is described in further detail the specific embodiment of the present invention.
As shown in Figures 1 and 2, described lithium-ion-power cell comprises battery container, and battery container inside is packaged with positive plate 1, negative plate 2, barrier film and electrolyte; Barrier film is arranged between positive plate 1 and the negative plate 2; Electrolyte fully soaks into positive plate 1, negative plate 2 and barrier film; On positive plate 1 and negative plate 2, be provided with radiator structure 3.
By being arranged at the effect of the radiator structure 3 on positive plate 1 and the negative plate 2, the heat dispersion of lithium-ion-power cell inside accesses effective improvement, the inside battery heat can evenly distribute, internal temperature of battery effectively reduces and can be lower than electrolytical flash-point and boiling point, can prevent that electrolyte from decomposing, solve the security hidden trouble of battery, thereby guaranteed the power performance and the security performance of electric automobile.
Because the current density at inside battery center is bigger during battery charging and discharging, and apart from housing farthest, heat radiation least easily, so the inside battery central temperature is the highest, for strengthening the effect of described radiator structure, guarantee radiating effect, described louvre is arranged at the center of positive plate 1 and negative plate 2; Like this when battery charging and discharging, the reaction of removal lithium embedded does not take place at the center of positive plate 1 and negative plate 2, the center of positive plate 1 and negative plate 2 will not produce heat, avoided the generation of inside battery maximum temperature point, the temperature in battery centre is gathered and will effectively be reduced, the heat that helps other positions of inside battery simultaneously distributes, and the internal temperature of entire cell will decrease, and louvre has promptly reached radiating effect.For the electric core that further guarantees to be assembled into or the centre position of battery do not have the reaction of removal lithium embedded to take place, when assembled battery that the position of the louvre on positive plate 1 and the negative plate 2 is corresponding, promptly positive plate 1 is all overlapping up and down with negative plate 2 louvre on the pole piece when lamination.
When guaranteeing the inside battery heat dispersion, need to guarantee the inside battery capacity, guarantee the power performance of electric automobile; So it is reasonable in design that the area of louvre size needs, the louvre area is excessive will to influence battery capacity, and the louvre area is crossed the radiating effect that the young pathbreaker can't guarantee inside battery; Through experimental test, the area of preferred louvre is one of percentage of positive plate 1 and negative plate 2 areas.
Louvre is a through hole, and louvre can be circle, rectangle and shape that all can be effective, is to guarantee the processing technology requirement, and louvre be a circle.
Described lithium-ion-power cell is the stacked electrokinetic cell of square.
Battery Design Theory capacity is 45Ah, adopts graphite as negative material, is mixed and made into cathode size by a certain percentage with water, conductive agent, binding agent etc., coats Copper Foil and makes negative plate 2.Adopt LiFePO4 as positive electrode, be mixed and made into anode sizing agent by a certain percentage, coat aluminium foil and make positive plate 1 with NMP, conductive agent, binding agent etc.By Figure 1 and Figure 2, cut out the circular louvre that is about pole piece area 1/100 at positive plate 1 and negative plate 2 centers during section, lamination is made electric core then, the membrane for polymer that barrier film adopts PP, PE to make, and the electrolyte solute is LiPF
6, solvent is the mixture of DEC and DMC.
Owing to adopted the louvre structure at positive plate 1 and negative plate 2 centers, be very beneficial for the Homogeneouslly-radiating of battery, lower about 10 ℃ when made battery 3C discharges in the present case than the discharge peak temperature of general electrokinetic cell, illustrate that above-mentioned battery has good heat dispersion.
Above the present invention has been carried out exemplary description; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or design of the present invention and technical scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (7)
1. a lithium-ion-power cell comprises battery container, and described battery container inside is packaged with positive plate (1), negative plate (2), barrier film and electrolyte; Described barrier film is arranged between described positive plate (1) and the negative plate (2); Described electrolyte fully soaks into described positive plate (1), negative plate (2) and barrier film; It is characterized in that: on described positive plate (1) and negative plate (2), be provided with radiator structure (3).
2. according to the described lithium-ion-power cell of claim 1, it is characterized in that: described radiator structure (3) is for being arranged at the louvre on described positive plate (1) and the negative plate (2).
3. according to the described lithium-ion-power cell of claim 2, it is characterized in that: described louvre is located at the center of described positive plate (1) and negative plate (2).
4. according to claim 2 or 3 described lithium-ion-power cells, it is characterized in that: the position of the louvre on described positive plate (1) and the negative plate (2) is corresponding.
5. according to the described lithium-ion-power cell of claim 4, it is characterized in that: the area of described louvre is one of percentage of described positive plate (1) and negative plate (2) area.
6. according to the described lithium-ion-power cell of claim 5, it is characterized in that: described louvre is a through hole, and described louvre is circular.
7. according to the described lithium-ion-power cell of claim 6, it is characterized in that: described lithium-ion-power cell is the stacked electrokinetic cell of square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102076266A CN102290596A (en) | 2011-07-22 | 2011-07-22 | Lithium-ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102076266A CN102290596A (en) | 2011-07-22 | 2011-07-22 | Lithium-ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102290596A true CN102290596A (en) | 2011-12-21 |
Family
ID=45336814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102076266A Pending CN102290596A (en) | 2011-07-22 | 2011-07-22 | Lithium-ion power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102290596A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420309A (en) * | 2011-11-14 | 2012-04-18 | 奇瑞汽车股份有限公司 | Laminated power battery |
| CN107634181A (en) * | 2017-09-13 | 2018-01-26 | 桑顿新能源科技有限公司 | A kind of lithium ion battery and preparation method thereof |
| CN107706467A (en) * | 2017-10-31 | 2018-02-16 | 深圳市朗泰通电子有限公司 | A kind of high-temperature Ni/H 2 battery and preparation method thereof |
| CN109546084A (en) * | 2017-09-21 | 2019-03-29 | 宁德时代新能源科技股份有限公司 | Lithium-rich negative plate, lithium ion secondary battery and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000340265A (en) * | 1999-05-31 | 2000-12-08 | Mitsubishi Chemicals Corp | Planar and laminated secondary battery |
| JP2007018917A (en) * | 2005-07-08 | 2007-01-25 | Nissan Motor Co Ltd | Stacked battery, and battery pack |
-
2011
- 2011-07-22 CN CN2011102076266A patent/CN102290596A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000340265A (en) * | 1999-05-31 | 2000-12-08 | Mitsubishi Chemicals Corp | Planar and laminated secondary battery |
| JP2007018917A (en) * | 2005-07-08 | 2007-01-25 | Nissan Motor Co Ltd | Stacked battery, and battery pack |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420309A (en) * | 2011-11-14 | 2012-04-18 | 奇瑞汽车股份有限公司 | Laminated power battery |
| CN107634181A (en) * | 2017-09-13 | 2018-01-26 | 桑顿新能源科技有限公司 | A kind of lithium ion battery and preparation method thereof |
| CN109546084A (en) * | 2017-09-21 | 2019-03-29 | 宁德时代新能源科技股份有限公司 | Lithium-rich negative plate, lithium ion secondary battery and preparation method |
| CN107706467A (en) * | 2017-10-31 | 2018-02-16 | 深圳市朗泰通电子有限公司 | A kind of high-temperature Ni/H 2 battery and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111221 |