CN104617329A - High-rate lithium titanate battery and manufacturing method thereof - Google Patents
High-rate lithium titanate battery and manufacturing method thereof Download PDFInfo
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- CN104617329A CN104617329A CN201510007434.9A CN201510007434A CN104617329A CN 104617329 A CN104617329 A CN 104617329A CN 201510007434 A CN201510007434 A CN 201510007434A CN 104617329 A CN104617329 A CN 104617329A
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- 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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- 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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Abstract
The invention discloses a high-rate lithium titanate battery and a manufacturing method thereof, wherein the high-rate lithium titanate battery comprises a central winding shaft, a battery cell, a negative electrode plate, a positive electrode plate, a negative electrode pole rod, a positive electrode pole rod, a shell, a negative electrode cover plate and a positive electrode cover plate; the central winding shaft comprises a first section and a second section that are connected to each other, wherein the first section is made of metal, and the second section is made of an insulating material; the battery cell comprises a positive electrode pole piece, a diaphragm and a negative electrode pole piece that are sequentially wound on the central winding shaft; the negative electrode pole rod is fixed on the negative electrode plate, while the positive electrode pole rod is fixed on the positive electrode plate; the other end of the negative electrode pole rod penetrates through a through hole in the negative electrode cover plate; an insulated sealing gasket is arranged between the negative electrode pole rod and the negative electrode cover plate; the other end of the positive electrode pole rod penetrates through the through hole in the positive electrode cover plate; the positive electrode pole rod and the positive electrode cover plate are connected in a sealed manner. According to the invention, the high-rate lithium titanate battery can avoid the bottleneck phenomenon caused by current leading belt, and improves the power output efficiency and use safety of batteries.
Description
Technical field
The present invention relates to battery, particularly relate to a kind of high magnification lithium titanate battery and manufacture method.
Background technology
Along with electric automobile, the greatly developing of energy storage industry, the research and development of jumbo lithium ion battery receive vast concern.Because soft-package battery lamination speed is slow, the external packing easily reason such as impaired, the development of Large Copacity soft-package battery is restricted.Existing jumbo lithium ion battery is generally based on cylindrical lithium ion battery that is square or winding.Small Cylindrical type lithium ion battery adopts volume pin to reel usually, then extract out volume pin again after slot rolling pier envelope realize the sealing of battery.Drainage adopts aluminium strip, nickel strap etc. to realize the extraction of electric current.Along with the raising of battery capacity, realize electric current using metal tape as lug and draw, very easily make drainage metal band excess load, make metal tape temperature too high, bring potential safety hazard and cause energy loss.
Summary of the invention
For above-mentioned prior art present situation, technical problem to be solved by this invention is, provide a kind of high magnification lithium titanate battery and manufacture method, avoid the bottleneck because drainage band causes, improve the Energy transmission efficiency of battery and the fail safe of use.
In order to solve the problems of the technologies described above, a kind of high magnification lithium titanate battery provided by the present invention, comprising:
Center spool, described center spool comprises connected first paragraph and second segment, and the material of described first paragraph is metal, and the material of described second segment is insulating material;
Battery core, described battery core comprises the anode pole piece, barrier film and the cathode pole piece that are wound on successively on described center spool, and one end of described battery core and described first paragraph homonymy is provided with negative lug, and one end of described battery core and described second segment homonymy is provided with positive pole ear;
Negative plate and positive plate, described negative plate and described positive plate are welded in the end of described negative lug and described positive pole ear respectively;
Negative pole pole and Positive Poles, described negative pole pole is fixed on described negative plate, and one end of described negative pole pole is inserted in the centre bore of described first paragraph, described Positive Poles is fixed on described positive plate, and one end of described Positive Poles is inserted in the centre bore of described second segment;
Shell, described shell is placed in outside described battery core; And
Negative pole cover plate and positive pole cover plate, described negative pole cover plate is fixed on described shell one end near described negative lug, the other end of described negative pole pole passes from the through hole described negative pole cover plate, and is provided with insulated enclosure pad between described negative pole pole and described negative pole cover plate; Described positive pole cover plate is fixed on described shell one end near described positive pole ear, and the other end of described Positive Poles passes from the through hole of described positive pole cover plate, and is tightly connected between described Positive Poles and described positive pole cover plate.
Wherein in an embodiment, the material of described first paragraph is aluminium alloy.
Wherein in an embodiment, the material of described second segment is plastics.
Wherein in an embodiment, the length of described first paragraph is at least the length of second segment described in twice.
Wherein in an embodiment, described center spool also comprises sleeve pipe, and described casing pipe sleeve is located at the outside of described first paragraph and described second segment.
Wherein in an embodiment, the material of described shell is aluminium alloy.
Wherein in an embodiment, described shell, described negative pole cover plate, described positive pole cover plate are together with the overall laser welding of described Positive Poles.
Wherein in an embodiment, described negative plate and described negative pole pole material are aluminium alloy, described negative plate, described negative pole pole and described negative lug laser welding; Described positive plate and described Positive Poles material are aluminium alloy, described positive plate, described Positive Poles and described positive pole ear laser welding.
Wherein in an embodiment, the material of described insulated enclosure pad is epoxy resin embedding adhesive, plastics or rubber.
The manufacture method of a kind of above-mentioned high magnification lithium titanate battery provided by the invention, comprises the following steps:
First paragraph and second segment are linked together, obtained center spool;
Anode pole piece, barrier film, cathode pole piece are wound on successively on described center spool and make battery core, there are negative lug and positive pole ear in the two ends of battery core;
Negative plate and positive plate are welded on the negative lug of described battery core and the end of positive pole ear respectively;
Negative pole pole is welded on negative plate, one end of described negative pole pole is inserted in the centre bore of described first paragraph through the through hole on described negative plate, described Positive Poles is welded on described positive plate, and one end of described Positive Poles is inserted in the centre bore of described second segment through the through hole on described positive plate;
Positive pole cover plate is welded with one end of shell;
The obtained part of step put into by part step obtained, and welded by the other end of negative pole cover plate with described shell;
The gap of welding Positive Poles and positive pole cover plate; And
With insulated enclosure pad by the gap sealing between described negative pole cover plate and described negative pole pole, insulation.
Compared with prior art, high magnification lithium titanate battery provided by the invention, because center spool comprises the first paragraph of metal and the second segment of insulation, not only just can avoid battery core two ends, negative pole short circuit, and, first paragraph is metal, can the heat that battery core inside operationally produces be delivered on be connected negative pole pole and in electrolyte, the heat part transmitted by negative pole pole is directly transferred to a part in air and is delivered on shell, shell again heat conduction in air, in the electrolyte a part of heat conduction can retained to inside battery after center spool absorbs the heat of inside battery, electrolyte is being delivered to heat on shell, shell is delivered to heat in air again, thus the bottleneck because drainage band causes can be avoided, improve the Energy transmission efficiency of battery and the fail safe of use.
The beneficial effect that additional technical feature of the present invention has will be described in this specification embodiment part.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the high magnification lithium titanate battery in the embodiment of the present invention;
Fig. 2-Fig. 7 is the flow chart of the preparation method of high magnification lithium titanate battery in the embodiment of the present invention, wherein, Fig. 2 is the perspective view of the part that step obtains, Fig. 3 is the perspective view of the part that step obtains, Fig. 4 is the perspective view of the part that step obtains, Fig. 5 is the perspective view of the part that step obtains, and Fig. 6 is the perspective view of the part that step obtains, and Fig. 7 is the perspective view of the part that step obtains.
Description of reference numerals: 1-center spool; 1a-first paragraph; 1b-second segment; 1c-sleeve pipe; 2-battery core; 2a-negative lug; 2b-positive pole ear; 3-negative plate; 4-positive plate; 5-negative pole pole; 6-Positive Poles; 7-negative pole cover plate; 8-positive pole cover plate; 9-shell; 10-insulated enclosure pad.
Embodiment
And the present invention is described in detail in conjunction with the embodiments below with reference to the accompanying drawings.It should be noted that, when not conflicting, the feature in following embodiment and embodiment can combine mutually.
As shown in Figure 1, the high magnification lithium titanate battery in one of them embodiment of the present invention comprises shell 9, negative pole cover plate 7, positive pole cover plate 8, center spool 1, battery core 2, negative plate 3, positive plate 4, negative pole pole 5 and Positive Poles 6.
Wherein, described center spool 1 comprises connected first paragraph 1a and second segment 1b, and the material of described first paragraph 1a is metal, is preferably aluminium alloy.The material of described first paragraph 1a is metal, can play thermolysis.The material of described second segment 1b is insulating material, is preferably plastics.The material of described second segment 1b is insulating material, can avoid the positive and negative electrode short circuit at battery core two ends.Preferably, the length of described first paragraph 1a is at least the length of second segment 1b described in twice.Like this, the major part of center spool 1 is aluminium alloy, the heat that battery core inside operationally produces can be delivered on be connected pole and in electrolyte.More preferably, described center spool 1 also comprises sleeve pipe 1c, and described sleeve pipe 1c is set in the outside of described first paragraph 1a and described second segment 1b.Like this, center spool 1 is outer not charged, and not by center spool heat output, conduct electricity stream, safer.
Described battery core 2 comprises the anode pole piece (not shown), barrier film (not shown) and the cathode pole piece (not shown) that are wound on successively on described center spool 1, and described battery core 2 is provided with negative lug 2a with one end of described first paragraph 1a homonymy.Described battery core 2 is provided with positive pole ear 2b with one end of described second segment 1b homonymy.
Described negative plate 3 and described positive plate 4 are welded in the end of described negative lug 2a and described positive pole ear 2b respectively.The material of described negative plate 3 and described positive plate 4 is preferably aluminium alloy.
Described negative pole pole 5 is fixed on described negative plate 3 by laser welding, and one end of described negative pole pole 5 is inserted in the centre bore of described first paragraph 1a, described Positive Poles 6 is fixed on described positive plate 4 by laser welding, and one end of described Positive Poles 6 is inserted in the centre bore of described second segment 1b.
Described shell 9 is column type, and material is aluminium alloy.Described shell 9 is placed in outside described battery core 2.The length of described shell 9 is slightly longer than the length of battery core 2, and shell 9 plays support, protection battery core 2 and thermolysis.
Described negative pole cover plate 7 is fixed on described shell 9 near one end of described negative lug 2a, the other end of described negative pole pole 5 passes from the through hole described negative pole cover plate 7, and insulated enclosure pad 10 is provided with between described negative pole pole 5 and described negative pole cover plate 7, prevent short circuit.Preferably, the material of described insulated enclosure pad 10 is epoxy resin embedding adhesive, plastics or rubber.Described positive pole cover plate 8 is fixed on described shell 9 one end near described positive pole ear 2b, and the other end of described Positive Poles 6 passes from the through hole of described positive pole cover plate 8, and is tightly connected between described Positive Poles 6 and described positive pole cover plate 8.More preferably, described shell 9, described negative pole cover plate 7, described positive pole cover plate 8 together with the overall laser welding of described Positive Poles 6, good heat dissipation effect.And described shell 9, described negative pole cover plate 7, described positive pole cover plate 8 and described Positive Poles 6 are aluminium alloy, good welding performance, have higher security performance.
The high magnification lithium titanate battery of the embodiment of the present invention has following beneficial effect: because center spool comprises the first paragraph of metal and the second segment of insulation, just avoid battery core two ends, negative pole short circuit, and, first paragraph is metal, can the heat that battery core inside operationally produces be delivered on be connected negative pole pole and in electrolyte, the heat part transmitted by negative pole pole is directly transferred to a part in air and is delivered on shell, shell again heat conduction in air, in the electrolyte a part of heat conduction can retained to inside battery after center spool absorbs the heat of inside battery, electrolyte is being delivered to heat on shell, shell is delivered to heat in air again, thus the bottleneck because drainage band causes can be avoided, improve the Energy transmission efficiency of battery and the fail safe of use.
In another embodiment of the present invention, additionally provide the preparation method of above-mentioned high magnification lithium titanate battery, comprise the following steps:
Second segment 1b is inserted first paragraph 1a end by step (1), make first paragraph 1a and second segment 1b cylindrical coincide central shaft point-blank after compression, then, put shrink sleeve 1c, two ends are trimmed, obtained center spool 1 (see Fig. 2) after pyrocondensation.
Anode pole piece, barrier film, cathode pole piece are wound on described center spool 1 and make battery core 2 by step (2) successively, there is spiral negative lug 2a and positive pole ear 2b at the two ends of battery core 2, and negative lug 2a and positive pole ear 2b end distance barrier film distance are more than or equal to set point (see Fig. 3).
Negative plate 3 and positive plate 4 are welded on the negative lug 2a of described battery core 2 and the end (see Fig. 4) of positive pole ear 2b by step (3) respectively.
Negative pole pole 5 is welded on negative plate 3 by step (4), the inner of described negative pole pole 5 is inserted in the centre bore of described first paragraph 1a through the through hole on described negative plate 3, described Positive Poles 6 is welded on described positive plate 4, and the centre bore interior (see Fig. 5) of described second segment 1b is inserted through the through hole on described positive plate 4 in described Positive Poles 6 the inner.
Positive pole cover plate 8 one end with shell 9 is welded by step (5);
The part that step 4 is obtained is put into the obtained part of step 5 by step (6), covers negative pole cover plate 7, welding negative pole cover plate 7 and shell 9 (see Fig. 6);
The gap of step (7) welding Positive Poles 4 and positive pole cover plate 8; And
Step (8) insulated enclosure pad 10 carries out gap sealing between negative pole cover plate 7 and negative pole pole 5, insulation (see Fig. 7).
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. a high magnification lithium titanate battery, is characterized in that, comprising:
Center spool (1), described center spool (1) comprises connected first paragraph (1a) and second segment (1b), the material of described first paragraph (1a) is metal, and the material of described second segment (1b) is insulating material;
Battery core (2), described battery core (2) comprises the anode pole piece, barrier film and the cathode pole piece that are wound on successively on described center spool (1), described battery core (2) is provided with negative lug (2a) with one end of described first paragraph (1a) homonymy, and described battery core (2) is provided with positive pole ear (2b) with one end of described second segment (1b) homonymy;
Negative plate (3) and positive plate (4), described negative plate (3) and described positive plate (4) are welded in the end of described negative lug (2a) and described positive pole ear (2b) respectively;
Negative pole pole (5) and Positive Poles (6), described negative pole pole (5) is fixed on described negative plate (3), and one end of described negative pole pole (5) is inserted in the centre bore of described first paragraph (1a), described Positive Poles (6) is fixed on described positive plate (4), and one end of described Positive Poles (6) is inserted in the centre bore of described second segment (1b);
Shell (9), described shell (9) is placed in described battery core (2) outside; And
Negative pole cover plate (7) and positive pole cover plate (8), described negative pole cover plate (7) is fixed on described shell (9) one end near described negative lug (2a), the other end of described negative pole pole (5) passes from the through hole described negative pole cover plate (7), and is provided with insulated enclosure pad (10) between described negative pole pole (5) and described negative pole cover plate (7); Described positive pole cover plate (8) is fixed on described shell (9) one end near described positive pole ear (2b), the other end of described Positive Poles (6) passes from the through hole of described positive pole cover plate (8), and is tightly connected between described Positive Poles (6) and described positive pole cover plate (8).
2. high magnification lithium titanate battery according to claim 1, is characterized in that, the material of described first paragraph (1a) is aluminium alloy.
3. high magnification lithium titanate battery according to claim 1, is characterized in that, the material of described second segment (1b) is plastics.
4. high magnification lithium titanate battery according to claim 1, is characterized in that, the length of described first paragraph (1a) is at least the length of second segment described in twice (1b).
5. high magnification lithium titanate battery as claimed in any of claims 1 to 4, it is characterized in that, described center spool (1) also comprises sleeve pipe (1c), and described sleeve pipe (1c) is set in the outside of described first paragraph (1a) and described second segment (1b).
6. high magnification lithium titanate battery according to claim 1, is characterized in that, the material of described shell (9) is aluminium alloy.
7. high magnification lithium titanate battery according to claim 6, it is characterized in that, described shell (9), described negative pole cover plate (7), described positive pole cover plate (8) and described Positive Poles (6) overall laser welding are together.
8. high magnification lithium titanate battery according to claim 1, it is characterized in that, described negative plate (3) and described negative pole pole (5) material are aluminium alloy, described negative plate (3), described negative pole pole (5) and described negative lug (2a) laser welding; Described positive plate (4) and described Positive Poles (6) material are aluminium alloy, described positive plate (4), described Positive Poles (6) and described positive pole ear (2b) laser welding.
9. high magnification lithium titanate battery according to claim 1, is characterized in that, the material of described insulated enclosure pad (10) is epoxy resin embedding adhesive, plastics or rubber.
10. a manufacture method for high magnification lithium titanate battery as in one of claimed in any of claims 1 to 9, is characterized in that, comprise the following steps:
(1) first paragraph (1a) and second segment (1b) are linked together, obtained center spool (1);
(2) anode pole piece, barrier film, cathode pole piece are wound on successively on described center spool (1) and make battery core (2), there are negative lug (2a) and positive pole ear (2b) in the two ends of battery core (2);
(3) negative plate (3) and positive plate (4) are welded on the negative lug (2a) of described battery core (2) and the end of positive pole ear (2b) respectively;
(4) negative pole pole (5) is welded on negative plate (3), one end of described negative pole pole (5) is inserted in the centre bore of described first paragraph (1a) through the through hole on described negative plate (3), described Positive Poles (6) is welded on described positive plate (4), and one end of described Positive Poles (6) is inserted in the centre bore of described second segment (1b) through the through hole on described positive plate (4);
(5) positive pole cover plate (8) one end with shell (9) is welded;
(6) part that step (4) is obtained is put into the obtained part of step (5), the other end of negative pole cover plate (7) with described shell (9) is welded;
(7) gap of Positive Poles (4) and positive pole cover plate (8) is welded; And
(8) with insulated enclosure pad (10) by the gap sealing between described negative pole cover plate (7) and described negative pole pole (5), insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007434.9A CN104617329A (en) | 2015-01-05 | 2015-01-05 | High-rate lithium titanate battery and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007434.9A CN104617329A (en) | 2015-01-05 | 2015-01-05 | High-rate lithium titanate battery and manufacturing method thereof |
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| CN104617329A true CN104617329A (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510007434.9A Pending CN104617329A (en) | 2015-01-05 | 2015-01-05 | High-rate lithium titanate battery and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265619A (en) * | 2019-06-10 | 2019-09-20 | 苏州安靠电源有限公司 | The center needle and cylindrical battery of cylindrical battery |
| CN112234244A (en) * | 2020-04-30 | 2021-01-15 | 蜂巢能源科技有限公司 | Lithium ion battery |
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| JPH1173998A (en) * | 1997-08-28 | 1999-03-16 | Sony Corp | Spiral-type battery |
| CN201243063Y (en) * | 2007-12-03 | 2009-05-20 | 天津市航力源科技有限公司 | Cylindrical flexible package lithium ion battery |
| CN102299271A (en) * | 2011-07-26 | 2011-12-28 | 珠海银通新能源有限公司 | Cylindrical lithium ion power cell |
| CN202259579U (en) * | 2011-09-08 | 2012-05-30 | 鞍山凯信环保节能工程技术有限公司 | High-multiplying power explosion-proof power battery |
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2015
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| JPH1173998A (en) * | 1997-08-28 | 1999-03-16 | Sony Corp | Spiral-type battery |
| CN201243063Y (en) * | 2007-12-03 | 2009-05-20 | 天津市航力源科技有限公司 | Cylindrical flexible package lithium ion battery |
| CN102299271A (en) * | 2011-07-26 | 2011-12-28 | 珠海银通新能源有限公司 | Cylindrical lithium ion power cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110265619A (en) * | 2019-06-10 | 2019-09-20 | 苏州安靠电源有限公司 | The center needle and cylindrical battery of cylindrical battery |
| CN112234244A (en) * | 2020-04-30 | 2021-01-15 | 蜂巢能源科技有限公司 | Lithium ion battery |
| CN112234244B (en) * | 2020-04-30 | 2022-05-20 | 蜂巢能源科技有限公司 | Lithium ion battery |
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Inventor after: Xu Delei Inventor after: Ma Meipin Inventor after: Cai Huiqun Inventor after: Li Haijun Inventor after: Zhan Shiying Inventor after: Wei Yincang Inventor after: Zhang Bing Inventor before: Ma Meipin Inventor before: Xu Delei Inventor before: Cai Huiqun Inventor before: Li Haijun Inventor before: Zhan Shiying Inventor before: Wei Yincang Inventor before: Zhang Bing |
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Application publication date: 20150513 |
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