CN201289891Y - Internal uniform radiating structure of square power lithium ion battery pole group - Google Patents
Internal uniform radiating structure of square power lithium ion battery pole group Download PDFInfo
- Publication number
- CN201289891Y CN201289891Y CN 200820142903 CN200820142903U CN201289891Y CN 201289891 Y CN201289891 Y CN 201289891Y CN 200820142903 CN200820142903 CN 200820142903 CN 200820142903 U CN200820142903 U CN 200820142903U CN 201289891 Y CN201289891 Y CN 201289891Y
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- Prior art keywords
- utmost point
- ion battery
- point group
- power lithium
- battery
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- Expired - Fee Related
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- Y02E60/12—
Abstract
The utility model discloses a uniform heat radiating structure inside a square-type power lithium ion battery pole group, which has a structure formed of at least four pole groups by parallel connection in the interior. The uniform heat radiating structure is characterized in that a heat conducting structure with an integrally stripe structure is arranged among the parallelly connected pole group in a shape like Chinese character 'zhi'; and the outermost layer of the heat conducting structure directly contacts with a metal casing. The uniform heat radiating structure provided in the utility model can be widely applied inside the square-type power lithium ion battery with relatively high battery capacity and large inner volume; and has relatively small additionally increased thickness with respect to the pole groups, so that the structural improvement may not cause greater change to the placement of the pole groups into the casing, thereby substantially keeping the manufacturing process and basic assembly process and parameters of the battery unchanged.
Description
Technical field
The utility model relates to field of batteries, in particular, relates to square lithium-ion power battery utmost point group inner laminated contact radiator structure and improves, and helps to improve its chemical property and security performance.
Background technology
Lithium ion battery compare with the battery of other types such as plumbic acid, cadmium nickel have that capacity is big, operating voltage is high, charging rate is fast, operating temperature range is wide, have extended cycle life, volume is little, advantage such as in light weight.At present, be widely used in fields such as mobile phone, notebook computer, electric tool, and its range of application more and more widely.
Along with the maturation of electric vehicle engineering and perfect day by day, the dream that electric automobile, hybrid vehicle are come into daily life has become possibility, and is breeding huge business opportunity in the process that electric automobile is popularized.And the quality of vehicle mounted dynamic battery performance directly affects the overall performance of electric automobile, and this also has higher requirement to the electric automobile vehicle mounted dynamic battery.
The square power lithium-ion battery is by the more electric automobiles that is applied at present, and this cell inside is adopted multipole group of parallel-connection structure mostly, and the outer package shell is box hat or aluminum hull.The required cell number of vehicle mounted dynamic battery group is more, and battery pack often will be followed higher pulse power output in actual use, and bigger current loading also often appears in cell, inner a large amount of heat production.And present existing inside battery structure adopts a plurality of utmost point group parallel waies mostly, utmost point group outside coats barrier film, the heat that battery center pole group produces is outwards derived by barrier film and electrolyte, the capacity of heat transmission of barrier film and electrolyte is relative relatively poor, the heat of inside battery is difficult to derive fast, if the inside battery heat can not be derived rapidly effectively, the inside battery heat is accumulated in a large number, higher local temperature rise can occur.Internal temperature of battery is too high, pressing relatively in can causing in the battery case increases, the excessive volatilization of electrolyte, battery stack contact structures variation, internal resistance increases, and polarization increases, the power-performance variation of battery, also can produce heat more, form vicious circle, to the security performance of battery with bigger influence is all arranged useful life.Thereby influence the performance and the vehicle performance of battery pack.
The utility model content
The objective of the invention is to overcome shortcoming of the prior art, existing structure is improved and optimized, the utility model twines utmost point group radiator structure by increasing whole Copper Foil " it " font, strengthen the capacity of heat transmission between the utmost point group, provide a kind of square power lithium-ion battery utmost point group inner Homogeneouslly-radiating structure.
The inner Homogeneouslly-radiating structure of the utility model square power lithium-ion battery utmost point group, inside battery is characterized in that at least four utmost point group parallel-connection structures, between the described utmost point group in parallel conductive structure is set, described conductive structure is whole banded structure, becomes " it " font to be provided with between utmost point group; The conductive structure outermost layer directly contacts with metal shell.
Conductive structure described in the utility model is the metal forming body.Conductive structure is a whole continuously Copper Foil or an aluminium foil.
The utlity model has following beneficial effect:
Utmost point assembling timing, application heat conduction Copper Foil carries out " it " font to utmost point group in parallel and closely twines, the Copper Foil outermost layer directly contacts with metal shell, the heat of center pole group can be derived rapidly by the bulk metal radiator structure during inside battery heat production, inside battery can not produce too high amount of localized heat accumulation, help battery when discharge inside reach a unanimity and lower temperature field, the security performance and the chemical property of square dynamic lithium battery had tangible improvement.
Radiator structure adopts copper foil material, the smooth no burr in Copper Foil edge, and the chemical stability of Copper Foil in electrolyte is good, the preferred metal pliability is arranged, and outstanding heat-conductive characteristic is arranged, and cost is relatively low, and using in this structure has outstanding combination property and cost performance preferably.
The utility model can be widely used in square power lithium-ion battery inside, square electrokinetic cell capacity is relatively large, internal volume is bigger, and the utility model is relatively very little to the extra thickness that increases of utmost point group, architecture advances can be to the bigger change of going into shell than causing of utmost point group, so battery manufacturing process and basic assembly technology and parameter can remain unchanged.
Description of drawings
Fig. 1 is the utility model Homogeneouslly-radiating structural representation.
Embodiment
The utility model is the whole pole injection moulding of a high-capacity lithium-ion power battery hermetically-sealed construction.Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1: suppose this radiator structure is applied in the radiator structure of square power lithium-ion battery of 6 utmost point group parallel connections, other structure and technological parameter of battery is constant.
Whole piece heat conduction Copper Foil becomes band, the edge requires smooth, smooth, no burr, in advance dust removal process is carried out on the surface, the Copper Foil width lacks 10mm than utmost point group barrier film width, the space of Ge Liu 5mm up and down when twining utmost point group, as shown in Figure 1,1 one-tenth " it " font of banded heat conduction Copper Foil foldable structure, 6 utmost point groups 2 in parallel are closely twined coating, and heat conduction Copper Foil outermost directly contacts with metal shell 3, makes the heat conduction more effective.The parallel connection of whole utmost point group is pasted protective tapes to lower limb on the utmost point group after having coated the heat conduction Copper Foil, and conductive structure and utmost point group structure are fixed.Follow-up assembly technology is constant.
After as above improving, present continuous heat dissipation metal structure between the inside battery utmost point group, utmost point group internal heat is effectively derived, improve battery performance.
Employing is carried out split to single utmost point group and is coated and to carry out tight parallel connection and also belong within the utility model scope.
Embodiment of the present utility model has below been described in conjunction with the accompanying drawings.But, should be clear and definite, the embodiment that the utility model is not limited to narrate above, person skilled in art can make various modifications and replace and also belong to the utility model under the situation that does not depart from the spirit or scope that the appended every claim of the utility model defines.
Claims (3)
1. the inner Homogeneouslly-radiating structure of a square power lithium-ion battery utmost point group, inside battery is characterized in that at least four utmost point group parallel-connection structures, between the described utmost point group in parallel conductive structure is set, described conductive structure is whole banded structure, becomes " it " font to be provided with between utmost point group; The conductive structure outermost layer directly contacts with metal shell.
2, the inner Homogeneouslly-radiating structure of square power lithium-ion battery utmost point group according to claim 1 is characterized in that described conductive structure is the metal forming body.
3, the inner Homogeneouslly-radiating structure of square power lithium-ion battery utmost point group according to claim 1 is characterized in that, conductive structure is a whole continuously Copper Foil or an aluminium foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820142903 CN201289891Y (en) | 2008-10-31 | 2008-10-31 | Internal uniform radiating structure of square power lithium ion battery pole group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820142903 CN201289891Y (en) | 2008-10-31 | 2008-10-31 | Internal uniform radiating structure of square power lithium ion battery pole group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201289891Y true CN201289891Y (en) | 2009-08-12 |
Family
ID=40981573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820142903 Expired - Fee Related CN201289891Y (en) | 2008-10-31 | 2008-10-31 | Internal uniform radiating structure of square power lithium ion battery pole group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201289891Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807719A (en) * | 2010-03-23 | 2010-08-18 | 江苏富朗特新能源有限公司 | Manufacturing method of high power type lithium battery system |
| CN103066313A (en) * | 2011-10-19 | 2013-04-24 | 通用汽车环球科技运作有限责任公司 | Wave fin battery module |
| CN106935915A (en) * | 2015-12-31 | 2017-07-07 | 中科泰能科技发展有限公司 | Heat dissipation method for square nickel battery |
-
2008
- 2008-10-31 CN CN 200820142903 patent/CN201289891Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807719A (en) * | 2010-03-23 | 2010-08-18 | 江苏富朗特新能源有限公司 | Manufacturing method of high power type lithium battery system |
| CN103066313A (en) * | 2011-10-19 | 2013-04-24 | 通用汽车环球科技运作有限责任公司 | Wave fin battery module |
| US9050898B2 (en) | 2011-10-19 | 2015-06-09 | GM Global Technology Operations LLC | Wave fin battery module |
| CN103066313B (en) * | 2011-10-19 | 2016-03-23 | 通用汽车环球科技运作有限责任公司 | Wave fin battery module |
| DE102012218819B4 (en) * | 2011-10-19 | 2018-11-15 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | WAVE RIBS BATTERY MODULE |
| CN106935915A (en) * | 2015-12-31 | 2017-07-07 | 中科泰能科技发展有限公司 | Heat dissipation method for square nickel battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20121031 |