WO2021100690A1 - Unité d'échange de chaleur de refroidissement de batterie - Google Patents

Unité d'échange de chaleur de refroidissement de batterie Download PDF

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Publication number
WO2021100690A1
WO2021100690A1 PCT/JP2020/042752 JP2020042752W WO2021100690A1 WO 2021100690 A1 WO2021100690 A1 WO 2021100690A1 JP 2020042752 W JP2020042752 W JP 2020042752W WO 2021100690 A1 WO2021100690 A1 WO 2021100690A1
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WIPO (PCT)
Prior art keywords
heat exchange
battery
tube
section
cooling
Prior art date
Application number
PCT/JP2020/042752
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English (en)
Japanese (ja)
Inventor
和也 倉橋
鳴笛 王
Original Assignee
株式会社ヴァレオジャパン
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社ヴァレオジャパン filed Critical 株式会社ヴァレオジャパン
Priority to JP2021558388A priority Critical patent/JPWO2021100690A1/ja
Publication of WO2021100690A1 publication Critical patent/WO2021100690A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • 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
    • 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
    • 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
    • H01M10/651—Means for temperature control structurally associated with the cells characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • 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

Definitions

  • the present invention relates to a battery cooling heat exchange unit for cooling a battery.
  • Patent Document 1 is known.
  • each heat exchange tube is composed of a flat tube having a flat cross section, which is small in thickness with respect to the width along the longitudinal direction of the header.
  • a narrow heat exchange tube has to be less rigid than a wide heat exchange tube.
  • the heat exchange tube provided between the second headers (specific section) has lower rigidity than the heat exchange tube provided between the first headers. Therefore, until the battery cooling heat exchange unit is assembled to the battery, it is preferable to reinforce only that portion so that the low-rigidity heat exchange tube does not bend or bend. For example, if the flatness of the flat surface of the heat exchange tube is lowered or the heat exchange tube is bent, it is disadvantageous in improving the assembling property of the heat exchange unit for cooling the battery with respect to the surface to be cooled by the battery. Is. Further, such bending and bending are not preferable in order to enhance the cooling effect of the heat exchange unit for cooling the battery.
  • An object of the present invention is to provide a technique for enhancing the assemblability of a heat exchange unit for cooling a battery to a battery, ensuring the adhesion of the heat exchange tube to the surface to be cooled of the battery, and enhancing the cooling effect. ..
  • the heat exchanger (30; 130) A plurality of pipe-shaped headers (31A, 31B, 31C; 31D) arranged in parallel at intervals (C1, C2), and The headers (31A, 31B, 31C; 31D) are arranged in a plurality of tube arrangement sections (32A, 32B; 32C) between the plurality of headers (31A, 31B, 31C; 31D) and are adjacent to each other.
  • the plurality of tube arrangement sections (32A, 32B; 32C) include a preset specific section (32B).
  • the reinforcing member (50) fixes the headers (31B, 31C) to which both ends of the heat exchange tube (35B) located in the specific section (32B) are connected.
  • a heat exchange unit for cooling the battery is provided.
  • the heat exchange unit for cooling the battery can be prevented from bending or bending a specific heat exchange tube between the time of production and the time of assembly to the battery (including during storage and transportation). Therefore, the assembling property of the battery cooling heat exchange unit with respect to the battery can be improved. Moreover, the adhesion of each heat exchange tube to the surface to be cooled of the battery can be ensured, and the cooling effect can be enhanced.
  • the width (W2) of the heat exchange tube (35B) located in the specific section (32B) is the other section (32A, 32B; 32C) in the plurality of tube arrangement sections (32A, 32B; 32C). It is narrower than the width (W1) of the heat exchange tube (35A) located at 32A; 32C).
  • the interval (C2) of the specific section (32B) is greater than the interval (C1) of another section (32A; 32C) within the plurality of tube arrangement sections (32A, 32B; 32C). Is also wide.
  • the tube wall thickness (T2) of the heat exchange tube (35B) located in the specific section (32B) is the other of the plurality of tube arrangement sections (32A, 32B; 32C). It is thinner than the tube wall thickness (T1) of the heat exchange tube (35A) located in the section (32A; 32C).
  • the specific section (32B) is the central section (32B) of all sequence combinations when the plurality of tube sequence sections (32A, 32B, 32C) has a number of sections of 3 or more. ) Are arranged.
  • the heat exchange tube (35B) located in the particular section (32B) is a flat surface (36B, 37B) along the longitudinal direction of the plurality of headers (31A, 31B, 31C; 31D).
  • Have and The reinforcing member (50) is made of a plate material having at least a part of bent portions (52, 53) bent so as to intersect the flat surfaces (36B, 37B).
  • the heat exchange tube (35B) located in the particular section (32B) has an inner surface (36B) along the cooled surface (12a) of the opposing batteries (12) and the inner surface (36B).
  • the reinforcing member (50) covers the outer surface (37B).
  • An urging member (72) is interposed between the outer surface (37B) and the reinforcing member (50).
  • the urging member (72) faces the inner surface (36B) of the heat exchange tube (35B) located in the specific section (32B) with the cooled surface (12) of the battery (12) facing the surface (32B). It is urged in the direction of pressing against 12a).
  • the battery unit 10 has a plurality of batteries 11 and 12 and a battery pack 13 including the plurality of batteries 11 and 12. These batteries 11 and 12 are fixed to the bottom plate 14 of the battery pack 13.
  • the plurality of batteries 11 and 12 are mounted on, for example, an electric vehicle that drives a traveling motor by electric power and travels, or a hybrid vehicle whose power source is an internal combustion engine and a motor, and supplies electric power to the traveling motor. Used to do.
  • first battery 11 the high battery 11
  • second battery 12 the low battery 12
  • the height Bh1 of the first battery 11 is higher than the height Bh2 of the second battery 12.
  • the surfaces 11a and 12a to be cooled of the plurality of batteries 11 and 12, respectively, are located on the same surface.
  • the side surfaces 11b and 12b facing each other are referred to as first side surfaces 11b and 12b
  • the side surfaces 11c and 12c opposite to each other are referred to as second side surfaces 11c and 12c. It is called 12c.
  • a predetermined gap 15 is provided between the first side surfaces 11b and 12b. Further, when the plurality of batteries 11 and 12 are viewed from the side to be cooled by the surfaces 11a and 12a, the width Bw1 of the first battery 11 is smaller (narrower) than the width Bw2 of the second battery 12.
  • the battery cooling heat exchange unit 20 (hereinafter, simply abbreviated as “heat exchange unit 20") is connected to a refrigeration cycle (not shown), and a gas-liquid mixed refrigerant flows through the inside.
  • the refrigerant exchanges heat with a plurality of batteries 11 and 12 to cool the batteries 11 and 12. Further, the heat exchange unit 20 is characterized in that the batteries 11 and 12 having different heights are efficiently cooled.
  • the heat exchange unit 20 has a heat exchanger 30 and a reinforcing member 50.
  • the heat exchanger 30 can exchange heat with each of the batteries 11 and 12 by following the surfaces 11a and 12a to be cooled of the plurality of batteries 11 and 12, respectively.
  • the heat exchanger 30 includes a plurality of headers 31A, 31B, 31C and a plurality of heat exchange tubes 35A, 35B.
  • the heat exchanger 30 is made of an aluminum alloy or the like and is joined so as to be airtight by a brazing process.
  • the plurality of headers 31A to 31C distribute the refrigerant to the plurality of heat exchange tubes 35A and 35B, or aggregate the refrigerants from the plurality of heat exchange tubes 35A and 35B.
  • the plurality of headers 31A to 31C are composed of sealed pipe-shaped members extending in the height direction (vertical direction) of the batteries 11 and 12, and between the batteries 11 and 12 having different heights. It is possible to place it in. That is, the plurality of headers 31A, 31B, and 31C are arranged in parallel in this order with intervals C1 and C2 in the horizontal direction.
  • three headers 31A, 31B and 31C are arranged for the two batteries 11 and 12.
  • the three headers 31A, 31B, and 31C will be described separately from the "first header 31A, second header 31B, and third header 31C" as appropriate.
  • the first header 31A is located in the vicinity of the second side surface 11c of the first battery 11.
  • the second header 31B is located in the vicinity of the gap 15 formed between the first side surfaces 11b and 12b of the batteries 11 and 12.
  • the third header 31C is located in the vicinity of the second side surface 12c of the second battery 12. In this way, by providing the second header 31B in the portion (gap 15) where the heights of the batteries 11 and 12 are different, the first header 31A and the third header 31C are separated.
  • the area between the headers 31A, 31B, and 31C is referred to as tube arrangement sections 32A, 32B, respectively.
  • the number of the tube arrangement sections 32A and 32B is two.
  • the tube arrangement section 32A between the first header 31A and the second header 31B is referred to as "first section 32A”.
  • the first section 32A is located on the surface to be cooled 11a of the first battery 11.
  • the tube arrangement section 32B between the second header 31B and the third header 31C is referred to as a "second section 32B".
  • this second section 32B is preset so as to be located on the cooled surface 12a of the second battery 12, it will be appropriately paraphrased as "specific section 32B".
  • This specific section 32B is preset so that the low-rigidity heat exchange tube 35B, which will be described later, is located.
  • the first section 32A is a section other than the specific section 32B among the plurality of tube arrangement sections 32A and 32B, it is appropriately paraphrased as "other section 32A”. That is, the plurality of tube arrangement sections 32A and 32B include a predetermined specific section 32B and other sections 32A.
  • the interval C2 of the specific section 32B (second section 32B) is among the plurality of tube arrangement sections 32A and 32B. , Larger (wider) than the interval C1 of the other section 32A (first section 32A).
  • the plurality of heat exchange tubes 35A and 35B are arranged in the plurality of tube arrangement sections 32A and 32B between the plurality of headers 31A to 31C, respectively, and both ends are connected to the headers 31A to 31C adjacent to each other. ..
  • These heat exchange tubes 35A and 35B are made of a material having excellent thermal conductivity, such as an aluminum alloy or a copper alloy.
  • the heat exchange tube 35A located in the first section 32A is referred to as the "first heat exchange tube 35A”.
  • the heat exchange tube 35B located in the second section 32B is referred to as a "second heat exchange tube 35B".
  • a plurality (plurality of stages) of the first heat exchange tube 35A and the second heat exchange tube 35B are arranged in the longitudinal direction of each header 31.
  • the length L2 of the second heat exchange tube 35B is the length of the first heat exchange tube 35A. Longer than L1.
  • the plurality of heat exchange tubes 35A and 35B are members having a flat cross section. That is, each of the heat exchange tubes 35A and 35B has a flat cross section in which the tube thickness Tc is small (thin) with respect to the widths W1 and W2 (tube widths W1 and W2) along the longitudinal direction of the headers 31A to 31C. It is composed of flat tubes.
  • the first heat exchange tube 35A has a flat inner surface 36A that can be along (close to) the cooled surface 11a of the first battery 11. It has a flat outer surface 37A facing away from the inner surface 36A. That is, the plurality of first heat exchange tubes 35A and 35A have flat surfaces 36A and 37A along the longitudinal direction of the plurality of headers 31, respectively.
  • the second heat exchange tube 35B has a flat inner surface 36B that can be along (closely attached to) the cooled surface 12a of the second battery 12, and the inner surface 36B. It has a flat outer surface 37B, facing the opposite side. That is, the plurality of second heat exchange tubes 35B and 35B each have flat surfaces 36B and 37B along the longitudinal direction of the plurality of headers 31A to 31C.
  • the first header 31A has a refrigerant inlet 41
  • the third header 31C has a refrigerant outlet 42.
  • the refrigerant supplied from the refrigerant inlet 41 to the first header 31A is distributed from the first header 31A to the first heat exchange tubes 35A and 35A, respectively.
  • the refrigerant flowing through the first heat exchange tubes 35A and 35A cools the first battery 11.
  • the refrigerant that has passed through the first heat exchange tubes 35A and 35A collects in the second header 31B and is further distributed from the second header 31B to the second heat exchange tubes 35B and 35B.
  • the refrigerant flowing in each of the second heat exchange tubes 35B and 35B cools the second battery 12.
  • the refrigerant that has passed through the second heat exchange tubes 35B and 35B collects in the third header 31C and is discharged from the refrigerant outlet 42.
  • the height Bh2 of the second battery 12 is lower than the height Bh1 of the first battery 11.
  • the height of the uppermost second heat exchange tube 35B is set lower than the height of the uppermost first heat exchange tube 35A by the height difference Hi.
  • the width W2 (tube width W2) of each second heat exchange tube 35B is set smaller than the width W1 (tube width W1) of each first heat exchange tube 35A.
  • the first heat exchange tube 35A and the second heat exchange tube 35B which are different in height from each other, are provided with the second header 31B at different heights in order to allow the refrigerant to flow smoothly. It is divided by.
  • the tube wall thickness T2 of the second heat exchange tube 35B (see FIG. 4) is smaller than the tube wall thickness T1 of the first heat exchange tube 35A (see FIG. 3).
  • At least a part of the reinforcing member 50 is bent so as to intersect the flat surfaces 37B and 37B of the second heat exchange tubes 35B and 35B. It is composed of a metal plate material such as a steel plate or a stainless steel plate.
  • the reinforcing member 50 is configured to have a substantially U-shaped cross section, which is composed of a main body portion 51, an upper bending portion 52, and a lower bending portion 53. It is also an integrated product.
  • the main body 51 is a flat plate-like portion that covers the outer surfaces 37B and 37B of the second heat exchange tubes 35B and 35B, respectively.
  • the upper bent portion 52 and the lower bent portion 53 intersect the flat surfaces 37B and 37B so as to wrap the entire second heat exchange tubes 35B and 35B from the upper end and the lower end of the main body 51. It is a bent part.
  • the reinforcing member 50 covers the flat surfaces 37B and 37B (outer surfaces 37B and 37B) of the second heat exchange tubes 35B and 35B, respectively.
  • the upper bent portion 52 and the lower bent portion 53 may have only one of them.
  • the reinforcing member 50 may have only the upper bent portion 52, and the plurality of locking claws 61 described later may have a shape extending from the main body portion 51 along the plane of the main body portion 51.
  • the reinforcing member 50 has bent portions 52, 53 that are bent so that at least a part thereof intersects the flat surfaces 37B, 37B of the heat exchange tubes 35B, 35B located in the specific section 32B. Since it is configured to have, it has high rigidity.
  • the specific headers 31B and 31C located on both sides of the specific section 32B can be sufficiently integrated by the high-rigidity reinforcing member 50.
  • the reinforcing member 50 has a plurality of locking claws 61 and a plurality of mounting portions 62 for mounting the heat exchange unit 20 on the battery unit 10.
  • the plurality of locking claws 61 extend downward from the lower end of the main body 51 or the lower bent portion 53, and lock the plurality of locking holes 63 having in the bottom plate 14 of the battery pack 13. It is possible to do.
  • the plurality of mounting portions 62 extend from the upper end or upper bending portion 52 of the main body portion 51 toward the second battery 12, and bolt to the plurality of battery-side mounting portions 64 included in the second battery 12. It can be attached by the fastening member 65 such as.
  • the locking claw 61 is inserted into the locking hole 63 of the battery pack 13 to lock the battery pack 13, and the mounting portion 62 is fastened to the battery-side mounting portion 64 of the second battery 12.
  • the heat exchange unit 20 can be attached to the battery unit 10.
  • the heat exchange unit 20 has a plurality of urging units 70.
  • the plurality of urging units 70 are individually provided for the plurality of second heat exchange tubes 35B and 35B, and are interposed between the second heat exchange tubes 35B and 35B and the reinforcing member 50.
  • Each urging unit 70 includes a support member 71 and an urging member 72, respectively.
  • the support member 71 is a member for supporting the urging member 72 on the second heat exchange tube 35B, and is a long member extending along the second heat exchange tube 35B.
  • the support member 71 has a substantially C-shaped cross section when viewed from the longitudinal direction of the second heat exchange tube 35B, and is made of an elastic material, for example, a resin molded product.
  • the support member 71 is attached to the second heat exchange tube 35B by being fitted into the second heat exchange tube 35B from the outer surface 37B side.
  • the urging member 72 urges the inner surface 36B of the second heat exchange tube 35B located in the specific section 32B in the direction of pressing against the cooled surface 12a of the second battery 12.
  • the urging member 72 is composed of, for example, a "leaf spring", and is viewed from the back surface 71a of the support member 71 (the surface 71a facing the main body 51 of the reinforcing member 50) when viewed from the longitudinal direction of the support member 71. It has a substantially V-shaped cross section that extends toward the main body 51.
  • the urging member 72 is provided integrally with the back surface 71a of the support member 71.
  • the urging member 72 can be integrated with the support member 71 by heat-caulking the support protrusion 71b protruding from the back surface 71a of the support member 71 to the urging member 72.
  • a plurality of urging members 72 are interposed between the outer surface 37B of the plurality of second heat exchange tubes 35B and the reinforcing member 50. Since the reinforcing member 50 reinforces the heat exchanger 30, it is configured to have higher rigidity than the second heat exchange tube 35B.
  • the urging member 72 is based on the reinforcing member 50 and urges the inner surface 36B of the second heat exchange tube 35B in a direction of pressing against the cooled surface 12a of the second battery 12.
  • the second heat exchange tube 35B is pressed against the cooled surface 12a of the second battery 12 by being urged by the urging member 72. Since the adhesion of the second heat exchange tube 35B to the surface to be cooled 12a of the second battery 12 can be further enhanced, the cooling effect of the battery cooling heat exchange unit 20 can be further enhanced.
  • the specific section 32B can be preset so that the low-rigidity heat exchange tubes 35B, 35B (specific heat exchange tubes 35B, 35B) are located.
  • the reinforcing member 50 fixes the headers 31B and 31C located on both sides of the specific section 32B (specific headers 31B and 31C).
  • the specific headers 31B and 31C and the reinforcing member 50 are integrated.
  • the relative deformation and displacement of the specific headers 31B and 31C are regulated by the reinforcing member 50.
  • Both ends of the specific heat exchange tubes 35B and 35B located in the specific section 32B are connected and integrated with each specific header 31B and 31C integrated with each other by the reinforcing member 50. Therefore, it is possible to prevent bending and bending of the specific heat exchange tubes 35B and 35B having low rigidity.
  • the specific heat exchange tubes 35B and 35B are bent. It is possible to prevent the occurrence of bending. Therefore, the assembling property of the battery cooling heat exchange unit 20 with respect to the second battery 12 can be improved. Moreover, the adhesion of the specific heat exchange tubes 35B and 35B to the surface to be cooled 12a of the second battery 12 can be ensured, and the cooling effect can be enhanced.
  • the interval C2 of the specific section 32B is large (wide)
  • the lengths L2 of the specific heat exchange tubes 35B and 35B are large. Even for the specific heat exchange tubes 35B and 35B, which have low rigidity due to their long length, the occurrence of bending and bending can be prevented by providing the reinforcing member 50.
  • the reinforcing member 50 can be provided. It is possible to prevent the occurrence of bending and bending.
  • the reinforcing member 50 is provided even for the specific heat exchange tubes 35B and 35B, which have low rigidity due to the small (thin) wall thickness T2 (tube wall thickness T2). Therefore, it is possible to prevent the occurrence of bending and bending.
  • FIG. 5 shows the battery unit 110 and the battery cooling heat exchange unit 120 according to the second embodiment, and corresponds to the above FIG.
  • the battery cooling heat exchange unit 120 of the second embodiment shown in FIG. 5 has two tube arrangement sections 32A and 32B. The feature is that the number of sections has been changed to 3 or more.
  • Other basic configurations are common to the battery cooling heat exchange unit 20 according to the first embodiment. Regarding the parts common to the battery unit 10 and the battery cooling heat exchange unit 20 according to the first embodiment, reference numerals are used and detailed description thereof will be omitted.
  • Example 2 the case where the number of sections is 3 is illustrated.
  • the battery unit 110 of the second embodiment has three batteries 11, 11 and 12.
  • the two first batteries 11 and 11 are arranged on both sides of the second battery 12.
  • the height Bh2 of the central second battery 12 is lower than the height Bh1 of the first batteries 11 and 11 on both sides.
  • the heights Bh1 of the first batteries 11 and 11 on both sides may be different from each other.
  • the heat exchange unit 120 of the second embodiment has a heat exchanger 130 and a reinforcing member 50.
  • the heat exchanger 130 includes a plurality of (four in the second embodiment) headers 31A, 31B, 31C, 31D and a plurality of heat exchange tubes 35A, 35B. That is, in addition to the three headers 31A, 31B, and 31C, the fourth header 31D was added.
  • the four headers 31A, 31B, 31C, and 31D are arranged in this order with respect to the three batteries 11, 12, 11.
  • the headers 31A, 31B, 31C, and 31D are four, the number of sections is three.
  • the tube arrangement section 32C between the third header 31C and the fourth header 31D is referred to as a "third section 32C".
  • the first section 32A and the third section 32C are located on the cooled surfaces 11a and 11a of the two first batteries 11 and 11 arranged on both sides of the second battery 12, respectively.
  • the second section 32B is located on the cooled surface 12a of the second battery 12, it is referred to as a “specific section 32B”.
  • a low-rigidity heat exchange tube 35B is located in this particular section 32B.
  • the specific section 32B is arranged in the central section of all the combinations of sequences when the plurality of tube arrangement sections is the number of sections of 3 or more sections.
  • the central section is the second section when the tube arrangement section is 3 sections, and the second or third section when the tube arrangement section is 4 sections.
  • a specific section 32B is set in the center of all the tube arrangement sections 32A to 32C. That is, when there are a large number of tube arrangement sections 32A to 32C of 3 or more sections, where the specific section 32B is arranged in the center section and the strength is weakened, it is fixed by the reinforcing member 50. Relative deformation and displacement of the headers 31B and 31C arranged in the above are regulated.

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  • Secondary Cells (AREA)

Abstract

Le problème à résoudre par la présente invention est d'améliorer l'assemblage, dans une batterie, d'une unité d'échange de chaleur permettant le refroidissement de la batterie, afin d'assurer l'ajustement d'un tube d'échange de chaleur par rapport à une surface de la batterie à refroidir, et d'améliorer l'effet de refroidissement. La solution selon l'invention concerne une unité d'échange de chaleur (20) permettant le refroidissement de la batterie, l'unité comprenant : un échangeur de chaleur (30) pouvant effectuer un échange de chaleur avec une surface (11a, 12a) à refroidir d'une pluralité de batteries (11, 12) ; et un élément de renforcement (50) destiné à renforcer l'échangeur de chaleur (30). L'échangeur de chaleur (30) comprend : une pluralité de collecteurs (31A- 31C) ; et une pluralité de tubes d'échange de chaleur (35A, 35B) présentant une section transversale plate et disposés respectivement dans des sections (32A, 32B) d'agencement des tubes entre la pluralité de collecteurs (31A-31C). La pluralité de sections (32A, 32B) d'agencement des tubes comprend une section spécifique (32B). L'élément de renforcement (50) fixe les collecteurs (31B, 31C) entre eux, et les deux extrémités du tube d'échange de chaleur (35B), positionnées dans la section spécifique (32B), sont reliées aux collecteurs.
PCT/JP2020/042752 2019-11-22 2020-11-17 Unité d'échange de chaleur de refroidissement de batterie WO2021100690A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH051865A (ja) * 1991-10-25 1993-01-08 Showa Alum Corp 空気調和機用アルミニウム製凝縮器
JP2015072084A (ja) * 2013-10-03 2015-04-16 サンデン株式会社 熱交換器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH051865A (ja) * 1991-10-25 1993-01-08 Showa Alum Corp 空気調和機用アルミニウム製凝縮器
JP2015072084A (ja) * 2013-10-03 2015-04-16 サンデン株式会社 熱交換器

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