CN103840234A - Battery pack liquid flow laminated layer heat-exchanging flat pipe bundle structure and method - Google Patents
Battery pack liquid flow laminated layer heat-exchanging flat pipe bundle structure and method Download PDFInfo
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- CN103840234A CN103840234A CN201410097857.XA CN201410097857A CN103840234A CN 103840234 A CN103840234 A CN 103840234A CN 201410097857 A CN201410097857 A CN 201410097857A CN 103840234 A CN103840234 A CN 103840234A
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- heat
- heat exchange
- exchanging
- battery
- battery pack
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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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Abstract
The invention provides a battery pack liquid flow laminated layer heat-exchanging flat pipe bundle structure. A flat pipe bundle heat-exchanging structure is adopted to form a heat transferring channel between heat-exchanging liquid and a power battery; a heat-exchanging pipe bundle is arranged in a staggered arraying manner so that the temperature uniformity of a battery piece is guaranteed and the good heat-exchanging capability is realized; the capacity of the heat-exchanging liquid and a needed flow space can also be reduced and the light weight is realized.
Description
Technical field
The invention belongs to electric automobile, power battery pack heat management field, particularly electrokinetic cell liquid stream thermal control structure and heat-exchange method thereof in groups.
Background technology
Electrokinetic cell is the key technology of Development of Electric Vehicles, its charge and discharge process is not only subject to complicated running car factor impact, and its electrochemical reaction is also subject to the restriction of thermal environment factor, therefore electrokinetic cell needs the meticulous control of thermal environment temperature and heat management in groups.In fact, the each element cell of extensive battery in is in groups because compact structure is arranged and position difference will cause strong heat accumulation, heat transfer difference and the temperature lack of uniformity of the inner generation of battery pack, the greatest differences of the each element cell electrochemical reaction inconsistency of serious aggravation and internal resistance thereof, and cause in-fighting, even thermal runaway, reduces battery performance and life-span.Therefore, efficiently liquid stream heat-exchange system more and more comes into one's own in groups at high capacity cell, and becomes the key technology of electrokinetic cell heat management.
The heat management mode of electrokinetic cell is divided into gas temperature control mode and temperature control liquid mode by heat transfer medium.Gas temperature control mode is simple in structure, and cost is lower, but between gas medium and battery wall, heat exchange coefficient is low, and cooling rate is comparatively slow, is conventionally applicable to cooling in groups compared with small-capacity cells.Liquid medium has conduct heat rapidly response characteristic and high heat posting ability, is not only conducive to realize summer cooling, and can reaches preheating in winter, realizes the dual thermal control of battery changes in temperature in groups.Therefore,, in the high capacity cell that electric automobile adopts at lifting course continuation mileage, liquid-circulating heat-exchange system has progressively become mainstream technology.
Power battery pack liquid-circulating temperature control mode has some Patents, as Chinese patent " a kind of jacket type mixed electric car battery device (200710032496.0) of carrying liqs cooling system ", described cell apparatus adopts liquid cools jacket type structure, i.e. additional cooling housing on battery matrix, heat exchanger is selection of casing formula evaporator; Chinese patent " a kind of shell-and-tube electrical automobile battery device (201010614774.5) with enhance heat function ", mentions several battery cells is put into tube heat exchanger housing, and housing is provided with liquid and enters the import in heat exchanger shell; Chinese patent " a kind of batteries of electric automobile group water-cooled heat management system (201210376200.8) ", propose the similar coldplate of plate heat exchanger is set in battery pack inside and is close to battery cell both sides, coldplate is taked corresponding series and parallel to connect and is connected with liquid stream import and export.In the world, electrokinetic cell liquid cools related work, such as United States Patent (USP) " Battery Pack Liquid Cooling System (US20130034767A1) ", " Battery Pack Cooling Structure (US20010007728A1) ", " Power Battery Pack Cooling Apparatus (US20120282511A1) ", in " Cooling System For a Battery Pack (US20036569556B2) ", all only mention cell piece and the heat exchanger plates stacked arrangement form of whole plate heat exchange structure, the inner serpentine flow path that adopts of heat exchanger plates, waveform runner and chevron shaped runner, reach the heat exchange object of battery and fluid.Whole its volume of plate heat exchange structure adopting is large, and heavy, is unfavorable for battery lightweight in groups.Therefore, seek battery that simple in structure, compact, overall lightweight meets exchange capability of heat in groups liquid stream heat exchange structure become the electric automobile key technology that urgently needs are broken through.
The present invention adopts flat tube bundle heat exchange structure, and tube bank guarantees all property of cell piece temperature in staggered mode, in avoiding the contact of large scale face to be easy to stick up change increase thermal resistance, has both reached good exchange capability of heat, can reduce again liquid flow volume, realizes lightweight.
Summary of the invention
The present invention proposes, in battery pack liquid stream lamination flat heat exchange pipe binding structure, to adopt flat tube bundle heat exchange structure, forms the heat transfer path between heat exchanging fluid and electrokinetic cell.Heat-exchanging tube bundle guarantees all property of cell piece temperature in staggered mode, has both reached good exchange capability of heat, can reduce again heat exchanging fluid capacity and required flow spaces, realizes lightweight.
Accompanying drawing explanation
Fig. 1 battery pack heat-exchange system liquid flow diagram.
Fig. 2 cell piece is arranged and is contacted schematic diagram with flat tube bundle.
Fig. 3 cell piece and flat tube bundle lamination schematic diagram in groups.
In figure, the numbering of each parts and corresponding title are as follows:
In Fig. 1-3: 1-monolithic battery, 2-flat tube, 3-heat exchanging fluid, 4-end water-dividing chamber, 5-end collecting chamber, 6-liquid stream main entrance, 7-liquid stream general export, 8-high-heat-conductivity glue.
Embodiment
As shown in drawings, in the present embodiment, with staggered form by flat tube 2 be arranged in respectively electrokinetic cell in groups in each monolithic battery 1 both sides, form tube bank heat exchange, heat exchanging fluid 3 flows in the each passage of heat-exchanging tube bundle, with cell piece heat exchange, guarantees all property of the battery pack good temperature of each monolithic battery 1.
Moreover each flat-sided tube bank forms laminated type heat exchange unit, be spaced in groups with cell piece, flat heat exchange pipe 2 adopts high-heat-conductivity glue 8 with the each side surface of battery 1, guarantees good heat transfer, reduces contact heat resistance; Meanwhile, each heat exchange unit is connected with end water-dividing chamber 4, collecting chamber 5, forms overall heat exchange.
Wherein, end water-dividing chamber 4, collecting chamber 5 are set up and are formed by each cell piece both sides heat exchange unit lamination, and water-dividing chamber 4 is furnished with liquid stream main entrance 6, and collecting chamber 5 is furnished with liquid stream general export 7.After heat exchanging fluid 3 is by liquid stream main entrance 6 upstream end part hydroeciums 4, constraint heat exchanging fluid 3 evenly enters in the heat-exchanging tube bundle being communicated with end collecting chamber 5, and the heat exchanger channels forming by heat-exchanging tube bundle and battery pack are carried out heat exchange.
Claims (4)
1. battery pack liquid stream lamination flat heat exchange pipe binding structure and method, it is characterized in that during electrokinetic cell in groups, the heat-exchanging tube bundle that local flat tube (2) forms is arranged in the both sides of each monolithic battery, each flat-sided tube bank forms laminated type heat exchange unit, heat exchanging fluid (3) flows in the each passage of heat-exchanging tube bundle, with cell piece heat exchange, guarantee all property of the good temperature of the each monolithic battery of battery pack (1).
2. flat heat exchange pipe bundle according to claim 1, is characterized in that being arranged in respectively each cell piece (1) both sides with staggered form, forms tube bank heat exchange, and is connected with end water-dividing chamber (4), collecting chamber (5), forms overall heat exchange.
3. end according to claim 2 water-dividing chamber (4), end collecting chamber (5), it is characterized in that setting up and forming by each cell piece both sides heat exchange unit lamination, water-dividing chamber (4) is furnished with liquid stream main entrance (6), and collecting chamber (5) is furnished with liquid stream general export (7).
4. monolithic battery according to claim 1 both sides and heat-exchanging tube bundle Contact mode, is characterized in that the each side surface of flat heat exchange pipe and battery adopts high-heat-conductivity glue (8), guarantees good heat transfer, reduces contact heat resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410097857.XA CN103840234A (en) | 2014-03-14 | 2014-03-14 | Battery pack liquid flow laminated layer heat-exchanging flat pipe bundle structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410097857.XA CN103840234A (en) | 2014-03-14 | 2014-03-14 | Battery pack liquid flow laminated layer heat-exchanging flat pipe bundle structure and method |
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| Publication Number | Publication Date |
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| CN103840234A true CN103840234A (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410097857.XA Pending CN103840234A (en) | 2014-03-14 | 2014-03-14 | Battery pack liquid flow laminated layer heat-exchanging flat pipe bundle structure and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108140916A (en) * | 2016-06-13 | 2018-06-08 | 株式会社Lg化学 | Battery module and battery pack and vehicle including the battery module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010272518A (en) * | 2009-04-24 | 2010-12-02 | Nissan Motor Co Ltd | Battery pack |
| CN102171884A (en) * | 2008-10-14 | 2011-08-31 | 株式会社Lg化学 | Battery module assembly with improved cooling efficiency |
| CN102640347A (en) * | 2009-12-07 | 2012-08-15 | 住友重机械工业株式会社 | Shovel |
| CN102771004A (en) * | 2009-11-06 | 2012-11-07 | 贝洱两合公司 | Energy store device |
-
2014
- 2014-03-14 CN CN201410097857.XA patent/CN103840234A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102171884A (en) * | 2008-10-14 | 2011-08-31 | 株式会社Lg化学 | Battery module assembly with improved cooling efficiency |
| JP2010272518A (en) * | 2009-04-24 | 2010-12-02 | Nissan Motor Co Ltd | Battery pack |
| CN102771004A (en) * | 2009-11-06 | 2012-11-07 | 贝洱两合公司 | Energy store device |
| CN102640347A (en) * | 2009-12-07 | 2012-08-15 | 住友重机械工业株式会社 | Shovel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108140916A (en) * | 2016-06-13 | 2018-06-08 | 株式会社Lg化学 | Battery module and battery pack and vehicle including the battery module |
| US10749226B2 (en) | 2016-06-13 | 2020-08-18 | Lg Chem, Ltd. | Battery module, and battery pack and vehicle comprising the same |
| CN108140916B (en) * | 2016-06-13 | 2020-12-22 | 株式会社Lg化学 | Battery module, and battery pack and vehicle including the same |
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Application publication date: 20140604 |