JP6515252B2 - Step-wise battery thermal management system combining thermal management with phase change materials and thermal management with air - Google Patents
Step-wise battery thermal management system combining thermal management with phase change materials and thermal management with air Download PDFInfo
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- JP6515252B2 JP6515252B2 JP2018548008A JP2018548008A JP6515252B2 JP 6515252 B2 JP6515252 B2 JP 6515252B2 JP 2018548008 A JP2018548008 A JP 2018548008A JP 2018548008 A JP2018548008 A JP 2018548008A JP 6515252 B2 JP6515252 B2 JP 6515252B2
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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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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- Secondary Cells (AREA)
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- Sealing Battery Cases Or Jackets (AREA)
Description
本発明は、電池における熱管理技術に関し、特に、相変化材料による熱管理および空気による熱管理を組み合わせた階段式の電池熱管理技術に関する。 The present invention relates to thermal management techniques in batteries, and more particularly, to step-wise battery thermal management techniques combining thermal management with phase change materials and thermal management with air.
電池は高いエネルギー密度および出力密度を有するエネルギー蓄積素子であり、電気自動車の動力源として幅広く応用されている。しかしながら、充放電過程において、電池内部における電気化学反応は大量の熱を生じうる。局部に蓄積された熱により電池の温度が高すぎて、熱暴走状態になりうるため、電池が自然発火し、ひいては爆発してしまい、人の安全を脅かす。また、電池の電極附近の電気化学反応がより激しいため、電池の温度を不均一にし、電池のサイクル寿命を大幅に短縮させる。電池の作動信頼性を保証するとともに電池のサイクル寿命を延長し、電気自動車の全体的性能を向上させ、持続的な発展を実現するためには、合理的な電池熱管理システムを設計し、電池の正常動作温度を維持するとともに温度の均一性を向上させなければならない。 Batteries are energy storage devices having high energy density and power density, and are widely applied as power sources for electric vehicles. However, in the charge and discharge process, the electrochemical reaction inside the battery can generate a large amount of heat. The heat stored locally causes the battery temperature to be too high, which can lead to thermal runaway conditions, causing the battery to spontaneously ignite and eventually explode, threatening human safety. In addition, since the electrochemical reaction near the electrode of the battery is more intense, the temperature of the battery becomes uneven, and the cycle life of the battery is greatly shortened. Design a reasonable battery thermal management system and battery to guarantee battery operation reliability, extend battery cycle life, improve overall performance of electric car and realize sustainable development The temperature uniformity must be improved while maintaining the normal operating temperature of the
近年、空気冷却、液体冷却、ヒートパイプおよび相変化材料などの温度制御技術は、すでに電池熱管理への応用に成功し、電池の動作温度を大幅に低下させている。しかしながら、熱管理システムの伝熱性能の向上により電池発熱の相違性が拡大され、電池の局部の温度差をさらに大きくし、電池サイクルの使用需要に満たすことが難しく、電気自動車のランニングコストを増加させている。電気自動車の走行距離の増加に伴い、電池温度の均一性は電池熱管理システムに対してさらに厳しい要求を出している。 In recent years, temperature control techniques such as air cooling, liquid cooling, heat pipes and phase change materials have already been successfully applied to battery thermal management and have significantly reduced the battery operating temperature. However, the improvement in heat transfer performance of the thermal management system enlarges the difference in battery heat generation, further increasing the temperature difference in the local parts of the battery, making it difficult to meet the usage demand of the battery cycle, and increasing the running cost of the electric vehicle I am doing it. With the increasing travel distance of electric vehicles, battery temperature uniformity is placing even greater demands on battery thermal management systems.
本発明は、従来技術に存在する問題に鑑みてなされたものであり、劣悪な動作環境においても電池の動作温度を維持でき、温度の均一性を向上できる相変化材料による熱管理および空気による熱管理を組み合わせた階段式の電池熱管理システムを提供することを目的とする。 The present invention has been made in view of the problems existing in the prior art, and it is possible to maintain the operating temperature of the battery even in a poor operating environment and to improve the uniformity of the temperature. It aims to provide a step-wise battery thermal management system combining management.
本発明に係る相変化材料による熱管理および空気による熱管理を組み合わせた階段式の電池熱管理システムは、ベース、ベースに設けられた複数の電池を含み、複数の電池はグループに分けられてベースに間隔を置いて配列されており、前記ベース上にはカバーが設けられており、前記複数の電池の電極側はカバーに近接するように上向きに置かれており、間隔を置いて配列された電池の間には内部に異なる相変化材料が充填されている複数の相変化材料箱がそれぞれ設けられており、各相変化材料箱の前後両側面には密度および長さの異なる複数行の外側リブが間隔を置いて配置されており、同一行に位置する外側リブは空気の流れ方向に沿って長さおよび密度が階段式に分布されており、出気口附近に位置する外側リブの分布密度および長さは入気口附近に位置する外側リブの分布密度および長さより大きく、相変化材料箱の内部側板には複数行の内側リブが間隔を置いて配列されており、電池の電極から離れている内側リブの密度は電池の電極に近接している内側リブの密度より低く、前記外側リブの配列の密度は鉛直下方向に沿って徐々に小さくなっており、電池の電極から離れている相変化材料箱の外側リブは電極に近接している相変化材料箱の外側リブより密度が低く、前記電池、相変化材料箱、ベースとカバーとの間の隙間は空気ダクトを構成している。
The step-wise battery thermal management system combining thermal management with air and thermal management with phase change material according to the present invention comprises a base, a plurality of cells provided on the base, the plurality of cells being divided into groups and the base Are spaced apart, a cover is provided on the base, and the electrode sides of the plurality of cells are facing upward and close to the cover and spaced apart Between the cells, a plurality of phase change material boxes filled with different phase change materials are respectively provided, and on the front and back sides of each phase change material box, a plurality of outer rows of different density and length are provided. The ribs are spaced apart, and the outer ribs located in the same row have a step-wise distribution of length and density along the air flow direction, and the distribution of outer ribs located near the air outlet Density and The length is greater than the distribution density and length of the outer rib located near the inlet, and the inner side plate of the phase change material box has a plurality of rows of inner ribs spaced apart from the battery electrode The density of the inner rib is lower than the density of the inner rib close to the electrode of the battery, and the density of the arrangement of the outer rib is gradually smaller along the vertically downward direction, and the phase change away from the electrode of the battery The outer ribs of the material box have a lower density than the outer ribs of the phase change material box adjacent to the electrodes, and the gap between the battery, the phase change material box, the base and the cover constitutes an air duct.
前記ベースには複数の電池を固定するベース凹溝が設けられており、ベースの周りにはカバーに相応するベースねじ孔が設けられている。 The base is provided with a base recess for fixing a plurality of cells, and around the base is provided a base screw hole corresponding to the cover.
前記カバー内部の上側には電池および上部相変化材料箱に対応するカバー凹溝が設けられており、カバーの端部縁にはベースねじ孔に対応するカバーねじ孔が設けられており、カバーの左右両側には入気口および出気口がそれぞれ設けられている。 A cover recess corresponding to the battery and upper phase change material box is provided on the upper side inside the cover, and a cover screw hole corresponding to a base screw hole is provided on an end edge of the cover. An air inlet and an air outlet are provided on the left and right sides, respectively.
前記複数の相変化材料箱の数および相変化材料は電池の特性および所在されている動作環境によって定まれており、２〜４個である。 The number of phase change material boxes and the number of phase change materials are determined by the characteristics of the battery and the operating environment where they are located, and are 2 to 4.
前記複数の相変化材料箱の上部相変化材料箱の上下両端面はいずれも上部材料箱突起を有し、下部相変化材料箱の上端面には上部材料箱突起または中部材料箱突起に相応する凹溝が設けられており、かつ下端面は下部材料箱突起を有し、上部相変化材料箱と下部相変化材料箱との間の中部相変化材料箱の上端面には上部材料箱突起に相応する凹溝が開設されており、下端面は下部相変化材料箱に相応する突起を有している。 Both upper and lower end surfaces of the upper phase change material box of the plurality of phase change material boxes have upper material box projections, and upper end surfaces of the lower phase change material box correspond to upper material box projections or middle material box projections. A recessed groove is provided, and the lower end surface has a lower material box protrusion, and the upper end surface of the middle phase change material box between the upper phase change material box and the lower phase change material box is an upper material box protrusion The corresponding recess is open and the lower end has a corresponding projection on the lower phase change material box.
前記各相変化材料箱の電池と接触する位置にはいずれも絶縁熱伝導層が塗布されている。 An insulating heat conductive layer is applied to all the positions of the respective phase change material boxes in contact with the battery.
前記複数行の内側リブは、高い熱伝導能力を有するステンレス、銅アルミニウム合金または低炭素鋼によって製造されている。 The rows of inner ribs are made of stainless steel, copper aluminum alloy or low carbon steel having high heat transfer capability.
前記複数行の内側リブの分布密度は階段式であり、鉛直下方向に沿って密度は徐々に小さくなっている。 The distribution density of the inner ribs of the plurality of rows is stepwise, and the density gradually decreases along the vertically downward direction.
本発明によれば、相変化材料による熱管理および空気による熱管理を合理的に組み合わせており、構造がコンパクトであり、取り付けやすく、後でメンテナンスする際に電池および相変化材料箱の交換が便利である。電池の電極附近における高い発生熱は上記上部相変化材料箱内の高い熱伝導性能を有する相変化材料によって放熱され、その他の位置の発生熱は上記中部および下部相変化材料箱によって放熱され、単一電池の動作温度を維持するとともに電池の温度均一性を保証する。上記相変化材料箱の外側リブの分布を利用することで単一電池の温度の均一性をさらに向上させることができる。階段式に配置された外側リブは空気ダクト方向に沿って段階的に電池放熱を強化することができるため、電池間の温度差を減少し、電池パックの温度均一性を向上させる。本発明における熱管理技術は良好な均温化能力を有し、構造が簡単で、高効率であり、環境に優しく、コストが低く、メンテナンスが便利であり、拡張性に優れ、モジュラー生産に便利であり、電気自動車などの交通輸送手段およびエネルギー貯蔵発電所などの大型設備の熱管理要求に満たすことができ、幅広い市場への応用見通しがある。その主な利点は、次のとおりである。本発明は相変化材料および空気を合理的に組み合わせ、相変化材料、内側リブおよび外側リブの階段式配置を利用して、電池から発生する熱が段階的に放熱され、放熱量が大きく、放熱速度が速く、効果的に単一電池の温度均一性を向上させ、電池間の温度差を減少し、構造が簡単且つコンパクトであり、電池および相変化材料箱の取り付けおよびメンテナンスが便利であり、拡張性がよく、安全であり高効率などの利点を有する。 According to the present invention, the combination of thermal management with phase change material and thermal management with air is rationally combined, the structure is compact and easy to install, and it is convenient to change the battery and phase change material box for later maintenance It is. The heat generated in the vicinity of the electrodes of the battery is dissipated by the phase change material having high thermal conductivity in the upper phase change material box, and the heat generated at other positions is dissipated by the middle and lower phase change material boxes, Maintain the operating temperature of the battery and guarantee the temperature uniformity of the battery. The uniformity of the temperature of the single battery can be further improved by utilizing the distribution of the outer ribs of the phase change material box. The stepped outer ribs can enhance the heat dissipation of the battery stepwise along the air duct direction, thereby reducing the temperature difference between the batteries and improving the temperature uniformity of the battery pack. The thermal management technology in the present invention has good temperature equalization capability, is simple in structure, high efficiency, environmentally friendly, low cost, easy to maintain, easy to expand, and convenient to modular production It can meet the thermal management requirements of transportation vehicles such as electric vehicles and large facilities such as energy storage power plants, and has a broad market application prospect. The main advantages are as follows. The present invention rationally combines the phase change material and air, and utilizes the step-wise arrangement of the phase change material, the inner rib and the outer rib, so that the heat generated from the battery is dissipated stepwise, the amount of dissipated is large, the dissipated heat Fast speed, effectively improve temperature uniformity of single battery, reduce temperature difference between batteries, simple and compact structure, convenient for battery and phase change material box installation and maintenance, It has advantages such as scalability, safety and high efficiency.
以下、図面を参照しながら、実施例に合わせて本発明についてさらに詳しく説明する。
図１に示すように、本発明に係る相変化材料による熱管理および空気による熱管理を組み合わせた階段式の電池熱管理システムは主に、ベース１０１、カバー３０１、外側リブ１０８、内側リブ５０１、上部相変化材料箱１０５、中部相変化材料箱１０６、下部相変化材料箱１０７によって構成されている。図２に示すように、複数の電池１０４はベース１０１に設けられており、複数の電池１０４は２つのグループ（パック）に分けられてベース１０１に間隔を置いて配列されており、各グループの電池は４つあり、上記ベース１０１上にはカバー３０１が設けられており、電池１０４の電極側は電極がカバー３０１に近接するように上向きに置かれており、上記ベース１０１には複数の電池１０４および下部相変化材料箱１０７を固定するベース凹溝１０３が設けられており、ベース１０１の周りにはカバー３０１に相応するベースねじ孔１０２が設けられている。図３に示すように、上記カバー３０１内部の上側には電池および上部相変化材料箱に対応するカバー凹溝３０５が設けられており、カバー３０１の端部縁にはベースねじ孔１０２に対応するカバーねじ孔３０４が設けられており、上記カバー３０１内部の上側には凹溝が有り、電池および上部相変化材料箱に対応し、カバー３０１の左右両側には入気口３０２および出気口３０３がそれぞれ設けられている。上記複数の電池１０４の電極側は上向きに置かれており、電極はカバー３０１に近接しており、間隔を置いて配列された電池１０４の間には内部に異なる相変化材料が充填されている複数の相変化材料箱がそれぞれ設けられており、上記相変化材料箱の数および相変化材料は電池の特性および所在されている動作環境によって定まれており、一般的には２〜４個であり、各相変化材料箱の上記電池と接触する位置にはいずれも絶縁熱伝導層が塗布されている。図１に示すように、相変化材料箱は上部、中部、下部の３つであり、図５に示すように、上記上部相変化材料箱１０５の上下両端面はいずれも上部材料箱突起４０３を有し、上部相変化材料箱１０５の上部材料箱突起４０３および電池１０４はカバー凹溝３０５に嵌入されることができる。図６に示すように、中部相変化材料箱１０６の上端面には上部材料箱突起４０３に相応する中部材料箱凹溝６０１が開設されており、下端面は中部材料箱突起６０２を有し、図７に示すように、下部相変化材料箱１０７の上端面は中部材料箱突起６０２に相応する下部材料箱凹溝７０１を有し、下端面は下部材料箱突起４０１を有し、下部相変化材料箱１０７は下部材料箱突起４０１を介してベース凹溝１０３に固定されている。図４に示すように、各相変化材料箱の前後両側面には密度および長さの異なる複数行の外側リブ１０８が間隔を置いて配置されており、同一行に位置する外側リブ１０８は空気の流れ方向に沿って長さおよび密度が階段式に分布されており、出気口３０３附近に位置する外側リブ１０８の分布密度および長さは入気口３０２附近に位置する外側リブ１０８の分布密度および長さより大きい。図５に示すように、相変化材料箱の内部側板には複数行の内側リブ５０１が間隔を置いて配列されており、上記複数行の内側リブ５０１の分布密度は階段式であり、鉛直下方向に沿って密度は徐々に小さくなっている。内側リブ５０１は、高い熱伝導能力を有するステンレス、銅アルミニウム合金または低炭素鋼によって製造されている。電池電極から離れている内側リブの密度は電池の電極に近接している内側リブの密度より低く、上記外側リブ１０８の配列の密度は鉛直下方向に沿って徐々に小さくなっており、電池の電極から離れている相変化材料箱の外側リブは電極に近接している相変化材料箱の外側リブより密度が低く、上記電池１０４、相変化材料箱、ベース１０１とカバー３０１との間の隙間は空気ダクトを構成している。
Hereinafter, the present invention will be described in more detail in accordance with an embodiment with reference to the drawings.
As shown in FIG. 1, the step-wise battery thermal management system combining thermal management with a phase change material and thermal management with air according to the present invention mainly comprises a base 101, a cover 301, an outer rib 108, an inner rib 501, Upper phase change material box 105, middle phase change material box 106, and lower phase change material box 107 are formed. As shown in FIG. 2, the plurality of batteries 104 are provided on the base 101, and the plurality of batteries 104 are divided into two groups (packs) and arranged at intervals on the base 101. There are four batteries, and a cover 301 is provided on the base 101, and the electrode side of the battery 104 is placed upward so that the electrode is close to the cover 301. A plurality of batteries are provided on the base 101 A base concave groove 103 for fixing the lower phase change material box 107 is provided, and a base screw hole 102 corresponding to the cover 301 is provided around the base 101. As shown in FIG. 3, a cover groove 305 corresponding to the battery and upper phase change material box is provided on the upper side inside the cover 301, and the end edge of the cover 301 corresponds to the base screw hole 102. A cover screw hole 304 is provided, and a concave groove is provided on the upper side inside the cover 301 to correspond to the battery and the upper phase change material box, and an air inlet 302 and an air outlet 303 are provided on the left and right sides of the cover 301. Are provided respectively. The electrode sides of the plurality of cells 104 are facing upwards, the electrodes are in proximity to the cover 301, and different phase change materials are internally filled between the spaced cells 104. A plurality of phase change material boxes are provided respectively, and the number of phase change material boxes and the phase change materials are determined by the characteristics of the battery and the operating environment where the cells are located, generally two to four. Insulating heat conductive layers are applied to the respective phase change material boxes at positions in contact with the battery. As shown in FIG. 1, there are three phase change material boxes, upper, middle and lower, and as shown in FIG. 5, upper and lower end faces of the upper phase change material box 105 both have upper material box projections 403. And the upper material box projection 403 of the upper phase change material box 105 and the battery 104 can be fitted into the cover recess 305. As shown in FIG. 6, a middle material box groove 601 corresponding to the upper material box protrusion 403 is opened on the upper end surface of the middle phase change material box 106, and the lower end surface has the middle material box protrusion 602. As shown in FIG. 7, the upper end surface of the lower phase change material box 107 has a lower material box recess groove 701 corresponding to the middle material box projection 602, and the lower end surface has a lower material box projection 401 and lower phase change The material box 107 is fixed to the base groove 103 via the lower material box projection 401. As shown in FIG. 4, on the front and back sides of each phase change material box, a plurality of rows of outer ribs 108 of different density and length are spaced apart, and the outer ribs 108 located in the same row are air The distribution density and length of the outer rib 108 located in the vicinity of the air outlet 303 and the distribution of the outer rib 108 located in the vicinity of the air inlet 302 are distributed in steps and lengths and densities along the flow direction of Greater than density and length. As shown in FIG. 5, a plurality of rows of inner ribs 501 are arranged at intervals on the inner side plate of the phase change material box, and the distribution density of the plurality of rows of inner ribs 501 is a step formula. The density gradually decreases along the direction. The inner rib 501 is made of stainless steel, copper aluminum alloy or low carbon steel having high heat conductivity. The density of the inner rib away from the battery electrode is lower than the density of the inner rib adjacent to the battery electrode, and the density of the arrangement of the outer rib 108 gradually decreases along the vertically downward direction. The outer rib of the phase change material box away from the electrode has a lower density than the outer rib of the phase change material box close to the electrode and the gap between the battery 104, phase change material box, base 101 and cover 301 Make up an air duct.
上記相変化材料箱の数は２つまたは２つ以上であり、本実施例では３つの相変化材料箱を例としている。異なる相変化材料箱の内部には熱伝導性能の異なる相変化材料が満たされており、相変化材料の熱伝導率係数、相変化潜熱は階段式に分布され、鉛直下方向に沿って徐々に小さくなり、電池の電極から離れているところに充填された相変化材料の熱伝導率係数、相変化潜熱は電極に近接する位置より低く、単一電池の温度均一性を効果的に制御する。相変化材料は複合有機相変化材料、複合無機相変化材料およびカプセルタイプの相変化材料であってもよい。相変化材料箱は相変化材料の漏洩を防止することができる。
The number of phase change material boxes is two or more, and in this embodiment, three phase change material boxes are exemplified. The inside of the different phase change material box is filled with phase change materials with different heat transfer performances, and the thermal conductivity coefficient and the phase change latent heat of the phase change material are distributed in a stepwise manner, gradually along the vertical downward direction The thermal conductivity coefficient, phase change latent heat, of the phase change material that is smaller and smaller than the electrode of the battery is lower than the position close to the electrode, effectively controlling the temperature uniformity of the single battery. The phase change material may be a composite organic phase change material, a composite inorganic phase change material and a capsule type phase change material. The phase change material box can prevent the phase change material from leaking.
相変化材料箱内にはいずれも内側リブ５０１が設置されており、相変化材料箱の伝熱性能を向上させる。鉛直下方向に沿って密度は徐々に小さくなっており、電池の電極から離れている内側リブ５０１の密度は電極に近接している内側リブの密度より低く、単一電池の温度差を減少させる。相変化材料箱および内側リブはアルミナセラミックスなどの高熱伝導絶縁材料を採用することができ、内側リブは棒状であってもよい。
Inner ribs 501 are provided in each of the phase change material boxes to improve the heat transfer performance of the phase change material boxes. The density gradually decreases along the vertical downward direction, and the density of the inner rib 501 away from the electrode of the cell is lower than the density of the inner rib close to the electrode, which reduces the temperature difference of the single cell . The phase change material box and the inner rib may employ a high thermal conductivity insulating material such as alumina ceramics, and the inner rib may be rod-shaped.
ベース１０１に開設された凹溝１０３は、電池１０４および下部相変化材料箱１０７を固定するのに用いられ、ねじ孔１０２が設置されており、カバー３０１におけるねじ孔３０４に対応し締め付けられている。カバー３０１、ベース１０１内部の隙間部分は空気ダクトを構成することができ、カバー３０１には入気口３０２および出気口３０３が設置されている。カバーおよびベース材料は、軽量且つ高熱伝導性の銅、低炭素鋼およびアルミニウム合金などの材料を選択してもよい。 The recessed groove 103 opened in the base 101 is used to fix the battery 104 and the lower phase change material box 107, and the screw hole 102 is installed, and is tightened corresponding to the screw hole 304 in the cover 301. . A gap portion inside the cover 301 and the base 101 can constitute an air duct, and the cover 301 is provided with an air inlet 302 and an air outlet 303. The cover and base material may be selected from lightweight, high thermal conductivity materials such as copper, low carbon steel and aluminum alloys.
相変化材料箱の両側に配置された外側リブ１０８は、空気と相変化材料箱との間の接触面積を増加させる。外側リブ１０８の密度は鉛直下方向に沿って徐々に小さくなっており、電池の電極から離れている相変化材料箱の外側リブ１０８は、電極に近接している相変化材料箱の外側リブ１０８より密度が低く、電池の電極附近領域の放熱を強化し、単一電池の温度均一性を向上させる。 The outer ribs 108 disposed on both sides of the phase change material box increase the contact area between the air and the phase change material box. The density of the outer rib 108 gradually decreases along the vertically downward direction, and the outer rib 108 of the phase change material box away from the electrode of the battery is the outer rib 108 of the phase change material box close to the electrode. more density is low, to enhance the heat dissipation of the electrode vicinity region of the cell, improve the temperature uniformity of a single cell.
空気の流れ方向に沿って、同一水平位置の相変化材料箱両側の外側リブ１０８の密度および長さは階段式に分布されており、同一水平位置の相変化材料箱の外側リブは空気の流れ方向に沿って長さおよび密度が階段式に分布されており、出気口３０３附近位置の外側リブの密度および長さは入気口３０２附近の外側リブの密度および長さより大きく、空気ダクトの下流に位置する電池の放熱を強化し、上流側の電池と下流側の電池との間の温度差を減少し、電池パック全体の温度均一性を向上させる。外側リブの材料は高い熱伝導能力を有するステンレス、銅アルミニウム合金および低炭素鋼を使用してもよい。 Along the air flow direction, the density and length of the outer ribs 108 on both sides of the phase change material box at the same horizontal position are distributed stepwise, and the outer ribs of the phase change material box at the same horizontal position are the air flow The length and density are distributed stepwise along the direction, and the density and length of the outer rib near the air outlet 303 are larger than the density and length of the outer rib near the air inlet 302, and The heat dissipation of the downstream battery is enhanced, the temperature difference between the upstream battery and the downstream battery is reduced, and the temperature uniformity of the entire battery pack is improved. The material of the outer rib may be stainless steel, copper aluminum alloy and low carbon steel having high heat conductivity.
絶縁熱伝導剤４０２は、主に電池と相変化材料箱との間の接触熱抵抗を減少し、伝熱性能を向上させ、高い熱伝導率係数を有する熱伝導シリコーングリースおよび絶縁熱伝導両面テープを採用する。 Insulating heat conductive agent 402 mainly reduces the contact thermal resistance between the battery and the phase change material box, improves the heat transfer performance, and has a high thermal conductivity coefficient thermally conductive silicone grease and insulating thermally conductive double-sided tape To adopt.
１０１ ベース、
１０２ ベースねじ孔、
１０３ ベース凹溝、
１０４ 電池、
１０５ 上部相変化材料箱、
１０６ 中部相変化材料箱、
１０７ 下部相変化材料箱、
１０８ 外側リブ、
３０１ カバー、
３０２ 入気口、
３０３ 出気口、
３０４ カバーねじ孔、
３０５ カバー凹溝、
４０１ 下部材料箱突起、
４０２ 絶縁熱伝導剤、
４０３ 上部材料箱突起、
５０１ 内側フィン、
６０１ 中部材料箱凹溝、
６０２ 中部材料箱突起、
７０１ 下部材料箱凹溝。
101 based,
102 base screw hole,
103 base groove,
104 batteries,
105 upper phase change material box,
106 middle phase change material box,
107 lower phase change material box,
108 outer ribs,
301 cover,
302 air inlet,
303 air outlet,
304 cover screw hole,
305 cover groove,
401 lower material box protrusion,
402 insulation heat transfer agent,
403 upper material box protrusion,
501 inner fins,
601 middle part box groove,
602 Middle material box projection,
701 Lower material box recessed groove.
Claims (8)
ベース（１０１）と、
ベース（１０１）に設けられた複数の電池（１０４）と、
を含み、
複数の電池（１０４）はグループに分けられてベース（１０１）に間隔を置いて配列されており、前記ベース（１０１）上にはカバー（３０１）が設けられており、前記複数の電池（１０４）の電極側はカバー（３０１）に近接するように上向きに置かれており、間隔を置いて配列された電池（１０４）の間には内部に異なる相変化材料が充填されている複数の相変化材料箱がそれぞれ設けられており、各相変化材料箱の前後両側面には密度および長さの異なる複数行の外側リブ（１０８）が間隔を置いて配置されており、同一行に位置する外側リブ（１０８）は空気の流れ方向に沿って長さおよび密度が階段式に分布されており、出気口（３０３）附近に位置する外側リブ（１０８）の分布密度および長さは入気口（３０２）附近に位置する外側リブ（１０８）の分布密度および長さより大きく、相変化材料箱の内部側板には複数行の内側リブ（５０１）が間隔を置いて配列されており、電池の電極から離れている内側リブの密度は電池電極に近接している内側リブの密度より低く、前記外側リブ（１０８）の配列の密度は鉛直下方向に沿って徐々に小さくなっており、電池の電極から離れている相変化材料箱の外側リブは電極に近接している相変化材料箱の外側リブより密度が低く、前記電池（１０４）、相変化材料箱、ベース（１０１）とカバー（３０１）との間の隙間は空気ダクトを構成している、
ことを特徴とする相変化材料による熱管理および空気による熱管理を組み合わせた階段式の電池熱管理システム。 A step-wise battery thermal management system combining thermal management with phase change material and thermal management with air, comprising:
Base (101),
A plurality of batteries (104) provided on the base (101);
Including
The plurality of cells (104) are divided into groups and arranged at intervals on the base (101), and a cover (301) is provided on the base (101), and the plurality of cells (104) are provided. The electrode side of) is placed facing up close to the cover (301), and between the spaced-apart cells (104) the phases are filled with different phase change materials. Change material boxes are respectively provided, and on the front and back sides of each phase change material box, a plurality of rows of outer ribs (108) of different density and length are arranged at intervals and located in the same row The outer rib (108) has a step-wise distribution of length and density along the air flow direction, and the distribution density and length of the outer rib (108) located near the air outlet (303) Located near the mouth (302) More than the distribution density and length of the outer ribs (108), a plurality of rows of inner ribs (501) are arranged on the inner side plate of the phase change material box spaced apart and spaced apart from the electrodes of the cell The density is lower than the density of the inner rib close to the battery electrode, and the density of the arrangement of the outer rib (108) gradually decreases along the vertically downward direction, and the phase change material away from the battery electrode The outer rib of the box has a lower density than the outer rib of the phase change material box in proximity to the electrodes and the gap between the battery (104), phase change material box, base (101) and cover (301) is air. Make up the duct,
A step-wise battery thermal management system combining thermal management with phase change material and thermal management with air.
The distribution density of the inner ribs (501) of the plurality of rows is a step expression, and the density gradually decreases along the vertically downward direction, The density according to any one of claims 1 to 7 Step-wise battery thermal management system combining thermal management with phase change materials and thermal management with air.
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- 2016-12-22 CN CN201611200041.0A patent/CN106602171B/en active Active
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| KR101944053B1 (en) | 2019-01-30 |
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| CN106602171B (en) | 2019-04-26 |
| KR20180105720A (en) | 2018-09-28 |
| CN106602171A (en) | 2017-04-26 |
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