WO2023048035A1 - バッテリー冷却装置 - Google Patents
バッテリー冷却装置 Download PDFInfo
- Publication number
- WO2023048035A1 WO2023048035A1 PCT/JP2022/034318 JP2022034318W WO2023048035A1 WO 2023048035 A1 WO2023048035 A1 WO 2023048035A1 JP 2022034318 W JP2022034318 W JP 2022034318W WO 2023048035 A1 WO2023048035 A1 WO 2023048035A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- unit
- heat sink
- flow path
- cooling device
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 35
- 239000002826 coolant Substances 0.000 claims description 25
- 239000003507 refrigerant Substances 0.000 abstract description 33
- 230000006866 deterioration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- H01M10/655—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
-
- 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 disclosure relates to a battery cooling device that cools a battery mounted on a vehicle.
- FIGS. 1-3 are plan views showing an example in which a heat sink 20 is arranged adjacent to the lower surface of the battery pack 10.
- FIG. A plurality of battery cells 11 are provided in the battery pack 10 as shown in FIG.
- the shading of the hatched pattern in FIGS. 1-3 represents the temperature, and the darker the pattern, the higher the temperature.
- FIG. 1 shows a case where a flow path (not shown) through which a coolant flows in one direction is formed inside the heat sink 20 .
- Refrigerant flows into the channel from the refrigerant inlet 20a and is discharged from the refrigerant outlet 20b.
- one flow path may be provided, or a plurality of flow paths may be formed in parallel.
- the temperature of the coolant becomes higher toward the downstream side, that is, closer to the coolant outlet 20b.
- the temperature increases toward the right side of the figure.
- FIG. 2 shows a case where a U-shaped flow path (not shown) is formed inside the heat sink 20 .
- the flow path extends rightward from the coolant inlet 20a, turns back at the right end, and further extends leftward toward the coolant outlet 20b.
- the temperature of the coolant becomes higher toward the downstream side, ie, closer to the coolant outlet 20b. It becomes higher toward the upper side in the figure. It should be noted that the temperature of the battery pack 10 similarly rises toward the upper side in the drawing when the flow path is not U-shaped but has a meandering shape that is folded back multiple times within the heat sink 20 .
- FIG. 3 is a perspective view showing the state of the battery cells 11 in the battery pack 10.
- FIG. The shading in FIG. 3 corresponds to the case where the flow path through which the coolant flows in one direction is formed as shown in FIG. It can be seen that the battery cell 11 on the downstream side of the flow path has a higher temperature.
- temperature deviation occurs among the plurality of battery cells 11 provided in the battery pack 10 .
- the temperature of the battery cell 11 on the downstream side of the flow path is higher than the temperature of the battery cell 11 on the upstream side of the flow path.
- the deterioration of the battery cells 11 on the downstream side of the flow path is faster than the deterioration of the battery cells 11 disposed on the upstream side of the flow path.
- Such non-uniform deterioration of the battery cells 11 in the battery pack 10 leads to shortening of the life of the battery as a whole, which is not preferable.
- the present disclosure has been made in consideration of the above points, and provides a battery cooling device capable of reducing temperature imbalance between battery cells.
- a battery cooling device for a vehicle that cools a battery using a heat sink having a flow path through which a coolant flows,
- the flow path has a unit flow path into which the coolant before cooling the battery cells flows from one end and the coolant after cooling the battery cells is discharged from the other end,
- the unit channel has a U-shape that is folded with a width equal to or less than the cell width of the battery cell.
- Schematic perspective view showing main components of a battery cooling device according to an embodiment A schematic perspective view showing a heat sink Schematic perspective view showing an example in which the folding width of the unit channel is made equal to the cell width.
- 7A is a schematic perspective view showing the configuration of a refrigerant introduction system
- FIG. 7B shows the configuration of a refrigerant discharge system
- FIG. schematic perspective view Schematic perspective view showing how pressure equalizing tanks are arranged 9A is a cross-sectional view along line AA in FIG. 7A
- FIG. 9B is a cross-sectional view along line BB in FIG. 7B.
- FIG. 4 is a schematic perspective view showing the main configuration of the battery cooling device according to the embodiment. Since the main feature of the battery cooling device of this embodiment is the shape and arrangement of the channels, the positional relationship between the channels 101 and the battery cells 11 is shown in FIG.
- a battery and a battery cooling device are mounted on a vehicle.
- the battery has a battery pack (not shown) and a plurality of battery cells 11 arranged therein.
- a battery cooling system channel 101 is disposed adjacent to the battery. In this embodiment, channel 101 is located adjacent to the bottom surface of the battery.
- the flow path 101 is formed in the heat sink 100, and the heat sink 100 is arranged adjacent to the battery.
- the flow path 101 of the heat sink 100 is formed, for example, by extruding an aluminum plate.
- FIG. 4 shows an example in which the folded width of the unit flow paths 101-1, 101-2, 101-3, 101-4, .
- one battery cell 11 can pass through two unit channels 101-1, 101-2, 101-3, 101-4, .
- FIG. 6 shows an example in which the folded widths of the unit channels 101-1, 101-2, 101-3, 101-4, . . . are made equal to the cell width.
- one battery cell 11 can pass through one unit channel 101-1, 101-2, 101-3, 101-4, .
- the battery is constructed by arranging a plurality of battery cells 11 vertically and horizontally in a battery pack, and unit channels 101-1, 101-2, 101- 3, 101-4, .
- One or more unit channels 101-1, 101-2, 101-3, 101-4, . . . are formed for each lateral battery cell.
- two unit flow paths 101-1, 101-2, 101-3, 101-4, . one unit channel 101-1, 101-2, 101-3, 101-4, . . . is formed for one battery cell in the horizontal direction.
- Coolant before cooling the battery cells 11 flows from one end into each of the unit flow channels 101-1, 101-2, 101-3, 101-4, .
- the refrigerant after cooling is discharged.
- the coolant for example, pure water, fluorine-based inert liquid, or the like is used.
- FIG. 7A is a schematic perspective view showing the configuration of a refrigerant introduction system
- FIG. 7B is a schematic perspective view showing the configuration of a refrigerant discharge system.
- the pressure equalizing tank 102a is connected to the end of the outward path 101a, and the pressure equalizing tank 102b is connected to the end of the return path 101b.
- the first equalizing tank 102a is connected to one end of the plurality of unit flow paths 101-1, 101-2, 101-3, 101-4, .
- a second equalizing tank 102b is connected to the other ends of 101-1, 101-2, 101-3, 101-4, .
- the pressure equalizing tank 102a has an internal space that allows communication between the refrigerant inlet 103a and the plurality of outgoing paths 101a. Since the plurality of outbound paths 101a are in communication with the refrigerant inlet 103a through the same internal space, when the refrigerant is introduced from the refrigerant inlet 103a into the internal space of the pressure equalizing tank 102a, the refrigerant flows in the plurality of outbound paths 101a at the same pressure. is inflowed.
- the pressure equalizing tank 102b has an internal space that allows communication between the refrigerant outlet 103b and the plurality of return paths 101b. Since the plurality of return paths 101b communicate with the refrigerant outlet 103b through the same internal space, the refrigerant of the plurality of outward paths 101a is discharged with the same resistance.
- the equalizing tank 102a is connected to one end of the plurality of unit flow paths 101-1, 101-2, 101-3, 101-4, . -2, 101-3, 101-4, . ... can have the same flow velocity of the refrigerant.
- the cooling performance becomes the same among the unit channels 101-1, 101-2, 101-3, 101-4, .
- FIG. 8 is a schematic perspective view showing how the pressure equalizing tanks 102a and 102b are arranged.
- the equalizing tank 102 a is arranged on the side surface of the heat sink 100 and the equalizing tank 102 b is arranged on the upper surface of the heat sink 100 .
- FIG. 9A is a cross-sectional view taken along the AA section of FIG. 7A, ie, a plane including the forward path 101a
- FIG. 9B is a cross-sectional view taken along the BB section of FIG. 7B, ie, a plane including the return path 101b.
- FIG. 10 is a schematic perspective view showing how the pressure equalizing tank 102a is attached to the heat sink 100.
- FIG. 10 is a schematic perspective view showing how the pressure equalizing tank 102a is attached to the heat sink 100.
- refrigerant is supplied from a refrigerant supply unit (not shown) through the refrigerant inlet 103a into the pressure equalizing tank 102a.
- This refrigerant flows at the same flow rate through the plurality of unit channels 101-1, 101-2, 101-3, 101-4, .
- the refrigerant whose temperature rises as it flows through the plurality of unit flow paths 101-1, 101-2, 101-3, 101-4, .
- the temperature of the battery cells 11 in the vertical direction will be explained.
- the temperature of the battery cell 11x1 located closest to the coolant inlet/outlet is compared with the temperature of the battery cell 11x2 located closest to the turn-around path 101c.
- the coolant with the lowest temperature on the outward path 101a and the coolant with the highest temperature on the return path 101b pass through the battery cell 11x1. Therefore, it can be said that the cooling effect for the battery cell 11x1 is moderate.
- the cooling of the battery cell 11x1 and the cooling of the battery cell 11x2 are performed to the same degree, and temperature deviation in the vertical direction does not occur.
- the temperature of the battery cells 11 in the horizontal direction will be explained. As an example, compare the temperature of the battery cell 11x1 and the temperature of the battery cell 11x3.
- the battery cell 11x1 and the battery cell 11x3 both pass through the same number of outgoing paths 101a and returning paths 101b, so the battery cell 11x1 and the battery cell 11x3 are cooled to the same degree. Therefore, temperature deviation in the horizontal direction does not occur.
- the flow path extends from one end of the battery cell 11 to the other.
- the battery is constructed by arranging a plurality of battery cells 11 in the vertical direction and the horizontal direction in the battery pack. 101-3, 101-4, .
- the temperature bias in both the vertical and horizontal directions can be reduced for the battery cells 11 arranged in the vertical and horizontal directions.
- the plate-shaped heat sink 100 in which a plurality of unit channels 101-1, 101-2, 101-3, 101-4, . -1, 101-2, 101-3, 101-4, . and a second equalizing tank 102b connected to the other end of 101-4, .
- a plate-like heat sink 100 is folded back in a U shape in the surface direction, the first pressure equalizing tank 102 a is arranged on the side surface of the heat sink 100 , and the second pressure equalizing tank 102 b is arranged on the upper surface of the heat sink 100 .
- the refrigerant outlet (FIG. 9B) from the flow path (return path 101b) is higher than the refrigerant inlet (FIG. 9A) to the flow path (outbound path 101a).
- the refrigerant outlet faces upward, even if air enters the unit passages 101-1, 101-2, 101-3, 101-4, . Ejected.
- each unit channel 101-1, 101-2, 101-3, 101-4 .
- the present disclosure is not limited to this, and each unit channel 101-1, 101-2, 101-3, 101-4, . good. That is, each unit channel 101-1, 101-2, 101-3, 101-4, . . . may be folded twice or more.
- each unit channel 101-1, 101-2, 101-3, 101-4, . . . preferably fits within one cell width. Therefore, it is preferable to set the folding width to 1/2 of the cell width when folding twice, and to set the folding width to 1/3 of the cell width when folding three times.
- the present disclosure is useful as a cooling device for a battery having multiple battery cells.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
冷媒が流通する流路が形成されたヒートシンクを用いてバッテリーを冷却する車両のバッテリー冷却装置であって、
前記流路は、一端から前記バッテリーセルを冷却する前の冷媒が流入されるとともに、他端から前記バッテリーセルを冷却した後の冷媒が排出される単位流路を有し、
前記単位流路は、前記バッテリーセルのセル幅以下の幅で折り返されたU字形状を有する。
11、11x1、11x2、11x3 バッテリーセル
20、100 ヒートシンク
20a、103a 冷媒入口
20b、103b 冷媒出口
101 流路
101-1、101-2、101-3、101-4 単位流路
101a 往路
101b 復路
101c 折返し路
102a、102b 均圧タンク
Claims (4)
- 冷媒が流通する流路が形成されたヒートシンクを用いてバッテリーを冷却する車両のバッテリー冷却装置であって、
前記流路は、一端から前記バッテリーセルを冷却する前の冷媒が流入されるとともに、他端から前記バッテリーセルを冷却した後の冷媒が排出される単位流路を有し、
前記単位流路は、前記バッテリーセルのセル幅以下の幅で折り返されたU字形状を有する、
バッテリー冷却装置。 - 前記バッテリーは、
バッテリーパック内に複数のバッテリーセルが縦方向及び横方向に配置されて構成されたものであり、
前記単位流路は、
前記縦方向の複数のバッテリーセルに亘って延在し、かつ、前記横方向に亘って複数形成されている、
請求項1に記載のバッテリー冷却装置。 - 前記単位流路は、
前記横方向の1つのバッテリーセルにつき、1以上形成されている、
請求項2に記載のバッテリー冷却装置。 - 前記単位流路が複数形成された板状のヒートシンクと、
前記複数の単位流路の一端に接続された第1の均圧タンクと、
前記複数の単位流路の他端に接続された第2の均圧タンクと、
を有し、
前記単位通路は、前記板状のヒートシンクの面方向でU字状に折り返されており、
前記第1の均圧タンクは、前記ヒートシンクの側面に配置されており、
前記第2の均圧タンクは、前記ヒートシンクの上面に配置されている、
請求項1から3のいずれか一項に記載のバッテリー冷却装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112022004482.9T DE112022004482T5 (de) | 2021-09-22 | 2022-09-14 | Batterie-kühlvorrichtung |
CN202280061464.6A CN117981146A (zh) | 2021-09-22 | 2022-09-14 | 电池冷却装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-154308 | 2021-09-22 | ||
JP2021154308A JP7302635B2 (ja) | 2021-09-22 | 2021-09-22 | バッテリー冷却装置 |
Publications (1)
Publication Number | Publication Date |
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WO2023048035A1 true WO2023048035A1 (ja) | 2023-03-30 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2022/034318 WO2023048035A1 (ja) | 2021-09-22 | 2022-09-14 | バッテリー冷却装置 |
Country Status (4)
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JP (1) | JP7302635B2 (ja) |
CN (1) | CN117981146A (ja) |
DE (1) | DE112022004482T5 (ja) |
WO (1) | WO2023048035A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120315529A1 (en) * | 2011-06-13 | 2012-12-13 | Hee-Joon Jin | Battery pack |
US20160204486A1 (en) * | 2015-01-09 | 2016-07-14 | Dana Canada Corporation | Counter-Flow Heat Exchanger for Battery Thermal Management Applications |
WO2021018675A1 (en) * | 2019-08-01 | 2021-02-04 | Senior Uk Limited | Contra flow channel battery heat exchanger |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011049138A (ja) | 2009-07-31 | 2011-03-10 | Sanyo Electric Co Ltd | バッテリー装置 |
JP5960289B2 (ja) | 2013-01-10 | 2016-08-02 | 日立オートモティブシステムズ株式会社 | 電池モジュール |
-
2021
- 2021-09-22 JP JP2021154308A patent/JP7302635B2/ja active Active
-
2022
- 2022-09-14 WO PCT/JP2022/034318 patent/WO2023048035A1/ja active Application Filing
- 2022-09-14 CN CN202280061464.6A patent/CN117981146A/zh active Pending
- 2022-09-14 DE DE112022004482.9T patent/DE112022004482T5/de active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120315529A1 (en) * | 2011-06-13 | 2012-12-13 | Hee-Joon Jin | Battery pack |
US20160204486A1 (en) * | 2015-01-09 | 2016-07-14 | Dana Canada Corporation | Counter-Flow Heat Exchanger for Battery Thermal Management Applications |
WO2021018675A1 (en) * | 2019-08-01 | 2021-02-04 | Senior Uk Limited | Contra flow channel battery heat exchanger |
Also Published As
Publication number | Publication date |
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CN117981146A (zh) | 2024-05-03 |
JP7302635B2 (ja) | 2023-07-04 |
DE112022004482T5 (de) | 2024-07-18 |
JP2023045747A (ja) | 2023-04-03 |
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