WO2020158829A1 - Structure de refroidissement de batterie pour véhicule - Google Patents

Structure de refroidissement de batterie pour véhicule Download PDF

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Publication number
WO2020158829A1
WO2020158829A1 PCT/JP2020/003271 JP2020003271W WO2020158829A1 WO 2020158829 A1 WO2020158829 A1 WO 2020158829A1 JP 2020003271 W JP2020003271 W JP 2020003271W WO 2020158829 A1 WO2020158829 A1 WO 2020158829A1
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WO
WIPO (PCT)
Prior art keywords
battery
vehicle
converter
exhaust
intake
Prior art date
Application number
PCT/JP2020/003271
Other languages
English (en)
Japanese (ja)
Inventor
亮介 北村
藤井　毅
仁 粕谷
Original Assignee
三菱自動車工業株式会社
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 三菱自動車工業株式会社 filed Critical 三菱自動車工業株式会社
Priority to JP2020569700A priority Critical patent/JP7115570B2/ja
Priority to CN202080011552.6A priority patent/CN113366692A/zh
Publication of WO2020158829A1 publication Critical patent/WO2020158829A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains

Definitions

  • the present disclosure relates to a vehicle battery cooling structure.
  • Patent Document 1 discloses a vehicle including a BSG (Belt Starter Generator), that is, a belt-type starter generator.
  • the belt-type starter generator not only starts the engine but also functions as an auxiliary power source that assists the output of the engine during traveling.
  • a vehicle equipped with a belt-type starter generator includes a battery having an output voltage of 48V and a DC/DC converter.
  • a 48V battery drives the starter generator.
  • the DC/DC converter converts the output voltage of the battery from 48V to 12V in order to obtain the voltage of 12V that drives various electric components.
  • the battery and the DC/DC converter generate heat and become high in temperature with the operation, they are disadvantageous in exerting their performance. Therefore, it is necessary to appropriately cool the battery and the DC/DC converter.
  • the present disclosure relates to a vehicle battery cooling structure that can simplify and downsize the cooling structure.
  • a battery cooling structure of a vehicle includes a battery case supported by a vehicle body and accommodating a battery and a DC-DC converter, an air intake section for introducing air into the battery case, and an air introduced into the battery case. And an exhaust unit for discharging.
  • a battery is installed in the battery case upstream of the air flow path from the intake section to the exhaust section.
  • a DC-DC converter is installed on the downstream side. According to this structure, the battery is cooled first by the cooling air from the intake portion to the exhaust portion in the battery case through the air flow path, and then the cooling air warmed by the battery causes a higher temperature than the battery.
  • the DC-DC converter of is cooled.
  • both the battery and the DC/DC converter can be efficiently cooled even though the two members of the battery and the DC/DC converter that generate heat are housed in the same battery case. Therefore, the cooling structure is simplified and downsized as compared to the case where independent cooling structures are provided for both the battery and the DC/DC converter.
  • FIG. 1 is a perspective view showing a battery cooling structure for a vehicle according to an embodiment, showing a state in which a cover of a battery case is removed.
  • FIG. 2 is a plan view showing a battery cooling structure for a vehicle according to the embodiment, and shows a state in which a cover of a battery case is removed.
  • FIG. 3 is a sectional view taken along the line AA of FIG.
  • FIG. 4 is a sectional view taken along line BB of FIG.
  • FIG. 5 is a sectional view taken along line CC of FIG.
  • FIG. 6 is a perspective view showing a battery.
  • FIG. 7 is a cross-sectional view showing a state in which the end portion of the second exhaust pipe is arranged inside the side member.
  • the symbol UP indicates the vehicle upper side
  • the symbol FR indicates the vehicle front
  • the symbol LH indicates the vehicle width direction.
  • the present invention is applied to a vehicle including a belt-type starter generator, but the present invention is not limited to a vehicle including a belt-type starter generator and includes a battery and an output voltage of the battery. It is widely applicable to vehicles equipped with a DC/DC converter for converting
  • the rear floor pan 14 which is bridged, is provided. At the center of the rear floor pan 14 in the vehicle width direction, there is provided a recess 16 that is open upward and has a rectangular shape in plan view.
  • the recess 16 is usually used as a storage unit for storing a spare tire, a tool, etc., but in the present embodiment, it is used as a storage unit for storing the battery pack 20.
  • a flat luggage compartment board 18 (see FIG. 3) that covers the rear floor pan 14 including the recess 16 is arranged. Luggage can be loaded on the luggage compartment board 18.
  • the vehicle battery cooling structure includes a battery pack 20, an intake unit 22, and an exhaust unit 24.
  • the battery pack 20 includes a battery case 26, a battery 28, and a DC/DC converter 30.
  • the battery case 26 is provided in the luggage compartment.
  • the battery case 26 includes a tray 32 and a cover 34. In FIG. 1, the tray 32 and the cover 34 are omitted for convenience of description.
  • the tray 32 includes a tray bottom wall 3202 having an elongated rectangular shape, a tray side wall 3204 standing upright from the periphery of the tray bottom wall 3202, a tray flange 3206 provided on the outer periphery of the upper end of the tray side wall 3204, and an extension of the tray flange 3206.
  • a plurality of attachment pieces 3208 provided at intervals in the present direction.
  • the length of the tray 32 in the vehicle width direction is larger than the length of the tray 32 in the vehicle front-rear direction.
  • the outer periphery of the tray 32 is attached to the rear floor pan 14 via a plurality of attachment pieces 3208, or attached to the recess 16 via the attachment pieces 3208 and the bracket 35, whereby the tray 32 is supported by the vehicle body 10.
  • the cover 34 is fitted to a tray upper wall 3402 having a shape corresponding to the tray bottom wall 3202, a cover side wall 3404 vertically extending from the periphery of the cover upper wall 3402, and a tray flange 3206 provided on the outer periphery of the lower end of the cover side wall 3404. And a cover flange 3406.
  • the cover flange 3406 is superposed on the tray flange 3206 from above.
  • the tray flange 3206 and the cover flange 3406 are bolted to each other at a plurality of positions spaced in the circumferential direction. As a result, the inside of the battery case 26 is sealed. Further, in the present embodiment, as shown in FIG.
  • one of the cover side walls 3404 which is located on one side in the vehicle width direction, is provided with an intake pipe cutout 3410 for inserting an intake pipe 52, which will be described later. Is formed. Also, among the cover side walls 3404, a first exhaust pipe cutout 3412 for disposing a first exhaust pipe 42 described later as shown in FIG. As shown in FIG. 5, a second exhaust pipe notch 3414 for disposing a second exhaust pipe 44, which will be described later, is formed at a distance in the vehicle width direction.
  • the battery 28 includes a battery body 36 and a battery cover 38.
  • the output voltage of the battery body 36 is 48V.
  • the battery main body 36 supplies the output voltage to the belt type starter generator.
  • Various secondary batteries such as a lithium-ion secondary battery can be used as the battery body 36.
  • the temperature of the battery main body 36 may rise to about 60° C. with the operation, depending on the conditions during use. Therefore, it is desirable to cool the battery body 36 so that the battery body 36 has a temperature of around 25° C. at which the battery body 36 exhibits its performance.
  • the outer shape of the battery body 36 is an elongated rectangular plate shape. On the upper surface of the battery body 36, a safety valve that releases gas generated inside the battery body 36 is provided. As shown in FIGS.
  • the length of the battery main body 36 in the vehicle width direction is longer than the length of the battery main body 36 in the vehicle front-rear direction.
  • the battery main body 36 is attached to one side of the tray bottom wall 3202 in the vehicle width direction via a bracket 40 that is provided on the tray bottom wall 3202 and also serves as a reinforcement for the tray bottom wall 3202. With the battery main body 36 mounted on the tray bottom wall 3202 via the bracket 40, a seventh flow path 46G is provided between the bottom surface 3602 of the battery main body 36 and the tray bottom wall 3202 in the vehicle width direction. It is formed so as to extend linearly. Air in the vehicle compartment circulates as cooling air in the seventh flow path 46G.
  • the battery cover 38 covers the upper surface and the side surface of the battery body 36.
  • the lower portion of the battery cover 38 is open.
  • the battery cover 38 is covered from above the battery body 36, and is attached to the battery body 36 by an attachment member (not shown).
  • a band-shaped seal member (not shown) is attached to the inner surface of the side surface of the battery cover 38 that covers the side surface of the battery body 36 over the entire circumference in the circumferential direction. The seal member seals the space between the lower surface of the battery cover 38 and the upper surface of the battery body 36 and the space between the side surface of the battery cover 38 and the side surface of the battery body 36.
  • One end of the second exhaust pipe 44 is connected to a side surface of the battery cover 38 located on the rear side of the vehicle.
  • the other end of the second exhaust pipe 44 is led out to the outside rear side of the battery case 26 via the second exhaust pipe notch 3414 (see FIG. 3) of the cover 34.
  • the other end of the second exhaust pipe 44 is connected to the inside of the side member 12 through the opening of the rear floor pan 14 located on the side member 12 located on one side in the vehicle width direction. It As a result, the inside of the battery cover 38 and the inside of the side member 12 communicate with each other via the second exhaust pipe 44.
  • the grommet 48 seals between the outer periphery of the second exhaust pipe 44 and the opening of the rear floor pan 14.
  • the gas when the gas is released from the safety valve of the battery main body 36, the gas does not leak to the outside of the battery cover 38, in other words, does not leak to the inside of the vehicle, and the gas of the side member 12 of the side member 12 is leaked. It is guided to the inside and released from the inside of the side member 12 into the atmosphere outside the vehicle through a gap.
  • the DC/DC converter 30 converts the voltage output from the battery 28 from 48 V to 12 V and supplies it to various electric components.
  • the DC/DC converter 30 may have a temperature of about 100° C., which is higher than the temperature of the battery main body 36, depending on the conditions of use, depending on the operation. Therefore, it is desirable to cool the DC/DC converter 30 at around 60° C. at which the performance of the DC/DC converter 30 is exhibited.
  • the outer shape of the DC/DC converter 30 is a rectangular plate shape that is thinner than the battery 28.
  • the DC/DC converter 30 is arranged adjacent to the battery 28 with a gap in the vehicle width direction.
  • the DC/DC converter 30 is attached to the tray bottom wall 3202 on the other side in the vehicle width direction via a bracket 50 provided on the tray bottom wall 3202 and also reinforcing the tray bottom wall 3202.
  • a bracket 50 provided on the tray bottom wall 3202 and also reinforcing the tray bottom wall 3202.
  • the passage 46H is formed to extend along the vehicle width direction on the same straight line as the seventh passage 46G.
  • the bottom surface 3602 of the battery 28 and the bottom surface 3002 of the DC/DC converter 30 are efficiently cooled by the cooling air through the seventh flow path 46G and the eighth flow path 46H.
  • the upper surface 3004 of the DC/DC converter 30 may be optionally provided with heat dissipation fins or heat dissipation pins for promoting cooling.
  • the first flow path 46A, the second flow path 46B, the third flow path 46C, the fourth flow path 46D, and the ninth flow path 46I are formed.
  • the first flow path 46A extends in the vehicle front-rear direction between the tray side wall 3204 and the cover side wall 3404 located on one side in the vehicle width direction and the side surface 2802 of the battery 28 facing the side walls 3204 and 3404. To do.
  • the second flow path 46B is formed between the tray side wall 3204 and the cover side wall 3404 located in front of the vehicle, and the side surface 2802 of the battery 28 and the side surface 3006 of the DC/DC converter 30 that face the side walls 3204 and 3404. It extends in the vehicle width direction.
  • the second flow path 46B communicates with the vehicle front portion of the first flow path 46A.
  • the third flow path 46C is provided between the tray side wall 3204 and the cover side wall 3404 located on the rear side of the vehicle, the side surface 2802 of the battery 28 and the side surface 3006 of the DC/DC converter 30 facing the side walls 3204 and 3404, and It extends in the width direction.
  • the third flow passage 46C communicates with the vehicle rear portion of the first flow passage 46A.
  • the fourth flow path 46D extends in the vehicle front-rear direction between the side surface 2802 of the battery 28 and the side surface 3006 of the DC/DC converter 30 that face each other in the vehicle width direction.
  • the fourth flow path 46D communicates with the intermediate portion of the second flow path 46B and the third flow path 46C.
  • the ninth flow path 46I is located between the tray side wall 3204 and the cover side wall 3404 located on the other side in the vehicle width direction and the side surface 3006 of the DC/DC converter 30 facing the side walls 3204 and 3404, and is in the vehicle front-rear direction. Extend to.
  • the ninth channel 46I communicates with the ends of the second channel 46B and the third channel 46C.
  • a fifth flow path 46E through which cooling air flows is formed.
  • the fifth flow passage 46E communicates with the upper portion of the first flow passage 46A and extends in the vehicle width direction.
  • a sixth flow path 46F through which cooling air flows is formed.
  • the sixth flow path 46F communicates with the upper portions of the fifth flow path 46E and the fourth flow path 46D and extends in the vehicle width direction.
  • a seventh flow path 46G through which cooling air flows is formed between the lower surface 3602 of the battery 28 (battery body 36) and the tray bottom wall 3202.
  • the seventh flow path 46G communicates with the lower portion of the first flow path 46A and extends in the vehicle width direction.
  • an eighth flow path 46H through which cooling air flows is formed between the lower surface 3002 of the DC/DC converter 30 and the tray bottom wall 3202.
  • the eighth flow passage 46H communicates with the lower portions of the seventh flow passage 46G and the fourth flow passage 46D and extends in the vehicle width direction.
  • the intake section 22 introduces air in the vehicle compartment into the battery case 26.
  • the air in the passenger compartment is usually at a comfortable temperature for occupants by taking in outside air or using an air conditioner.
  • the intake section 22 includes an intake pipe 52.
  • intake pipe 52 is arranged on one side of battery case 26 in the vehicle width direction.
  • an intake intake opening 5202 for intake of air in the vehicle compartment is provided.
  • an intake air outlet 5204 for supplying the air sucked from the intake air inlet 5202 into the battery case 26 is provided.
  • the intake/intake opening 5202 is located at a position closer to one side in the vehicle width direction in the vehicle compartment and at a position separated upward from the rear floor pan 14.
  • the intake air outlet 5204 is arranged inside the battery case 26 through the intake pipe notch 3410 of the cover 34 of the battery case 26. As shown in FIGS. 2 and 5, the intake air outlet 5204 is directed to the side surface 2802 of the battery 28 in the direction in which the battery 28 and the DC-DC converter 30 are arranged.
  • the exhaust unit 24 exhausts the air introduced into the battery case 26.
  • the exhaust unit 24 includes a first exhaust pipe 42 and a fan 54.
  • the first exhaust pipe 42 is provided so as to project from the battery case 26 obliquely rearward of the vehicle through the first exhaust pipe notch 3412 of the cover 34.
  • An exhaust gas introduction opening 4202 is provided at one end of the first exhaust pipe 42 in the extending direction.
  • An exhaust discharge opening 4204 is provided at the other end of the first exhaust pipe 42 in the extending direction.
  • the exhaust gas introduction opening 4202 is arranged inside the battery case 26 at a position closer to the rear of the vehicle and between the battery 28 and the DC-DC converter 30 at a position closer to the DC-DC converter 30. As shown in FIG.
  • the exhaust introduction opening 4202 is located above the DC-DC converter 30 when viewed from the front, and is located between the battery 28 and the DC-DC converter 30 in the vehicle width of the DC-DC converter 30. It extends over the middle part of the direction. Further, the exhaust gas introduction opening 4202 is oriented substantially at the center of the upper surface 3004 of the DC/DC converter 30, as shown in FIG. Therefore, in the wall portion forming the first exhaust pipe 42, the location 4210 of the wall portion of the exhaust introduction opening 4202 on the battery 28 side is located on the DC/DC converter 30 side of the exhaust introduction opening 4202. The protrusion amount from the cover side wall 3404 to the inside of the battery case 26 is larger than that of the portion 4212.
  • the exhaust gas introduction opening 4202 faces the DC-DC converter 30 in the vicinity of the DC-DC converter 30. Further, the exhaust gas introduction opening 4202 is arranged between the battery 28 and the DC-DC converter 30 near the DC-DC converter 30. That is, the shortest distance from the center 4202C of the exhaust introduction opening 4202 to the DC-DC converter 30 is shorter than the shortest distance from the center 4202C of the exhaust introduction opening 4202 to the battery 40.
  • the first portion P1 located on the battery 28 side is located on the side opposite to the first portion P1 in the width direction and is located on the DC-DC converter 30 side. It projects further into the battery case 26 than P2.
  • exhaust gas exhaust opening 4204 opens below the luggage compartment board 18 outside the battery case 26.
  • the exhaust gas discharge opening 4204 opens in the space between the rear floor pan 14 and the luggage compartment board 18 that covers the rear floor pan 14.
  • exhaust emission opening 4204 has a rear side of the vehicle, an oblique rear side of the vehicle inclined in one of the vehicle width directions, and the other side in the vehicle width direction in a plan view. Open in 3 directions.
  • the fan 54 is provided in the vicinity of the first exhaust pipe 42 (exhaust exhaust opening 4204) outside the battery case 26.
  • the fan 54 sucks the air inside the battery case 26 from the exhaust introduction opening 4202 toward the exhaust discharge opening 4204.
  • the first exhaust pipe 42 and the fan 54 are located at the vehicle rear portion of the DC-DC converter 30. More specifically, the first exhaust pipe 42 and the fan 54 are located behind the DC-DC converter 30 in the vehicle and within the projection area of the DC-DC converter 30.
  • the center portion 54C of the fan 54 in plan view (corresponding to FIG. 2) has a vehicle width larger than that of the side portion of the DC-DC converter 30 located in the most center side in the vehicle width direction in plan view. Located outside the direction.
  • the first exhaust pipe 42 and the fan 54 are provided at positions deviated from the battery 28 in the vehicle width direction.
  • the first exhaust pipe 42 and the fan 54 are not arranged in the projection area of the battery 28 behind the battery 28.
  • the “projection area” here means a virtual area formed when the DC-DC converter 30 or the battery 28 is moved rearward without shifting in the vehicle width direction.
  • the cooling air introduced from the intake air intake opening 5202 of the intake pipe 52 is discharged from the intake air outlet 5204 to the battery. It is guided inside the case 26.
  • the cooling air blown from the intake air outlet 5204 collides with the side surface 2802 of the battery 28, and a part of the cooling air flows from the longitudinal middle portion of the first flow path 46A toward the vehicle front side and the vehicle rear side.
  • the cooling wind that has flowed from the middle portion in the longitudinal direction of the first flow path 46A toward the vehicle front side and the vehicle rear side flows through the second flow path 46B and the third flow path 46C to the other vehicle width direction, and To the flow path 46I.
  • a part of the cooling air blown from the intake air outlet 5204 and colliding with the side surface 2802 of the battery 28 is part of the fifth flow path 46E, the fourth flow path 46D of the upper surface 2804 of the battery 28, the DC/DC converter. It flows through the 5th flow path 46F of the upper surface 3004 of 30 to the other in the vehicle width direction, and reaches the 9th flow path 46I.
  • a part of the cooling air blown from the intake air outlet 5204 and colliding with the side surface 2802 of the battery 28 is part of the seventh flow path 46G of the lower surface 3602 of the battery 28 (battery body 36).
  • the battery 28 is installed on the upstream side and the DC-DC converter 30 is installed on the downstream side of the air flow path from the intake section 22 to the exhaust section 24 in the battery case 26. Therefore, first, the battery 28 is cooled in advance by the cooling air from the intake section 22 to the exhaust section 24 in the battery case 26 via the first flow path 46A to the ninth flow path 46I. Next, the DC-DC converter 30 having a temperature higher than that of the battery 28 is cooled by the cooling air heated by the battery 28. Therefore, although both the battery 28 and the DC/DC converter 30 that generate heat are accommodated in the same battery case 26, both the battery 28 and the DC/DC converter 30 can be efficiently cooled. it can. Therefore, as compared with the case where independent cooling structures are provided for both the battery 28 and the DC/DC converter 30, the cooling structure can be simplified, which is advantageous in terms of size reduction and cost reduction.
  • the exhaust gas introduction opening 4202 is provided in the vicinity of the DC-DC converter 30 so as to face the DC-DC converter 30. Therefore, the cooling air whose temperature has risen due to the battery 28 and the DC/DC converter 30 can be preferentially sucked into the exhaust gas introduction opening 4202, and the cooling efficiency of the battery 28 and the DC/DC converter 30 can be improved. Be advantageous. Further, the exhaust gas introduction opening 4202 is provided inside the battery case 26 at a location closer to the rear of the vehicle, and above the DC-DC converter 30 when viewed from the front, as shown in FIGS. It extends from between 28 and the DC-DC converter 30 to the middle portion of the DC-DC converter 30 in the vehicle width direction.
  • the cooling air whose temperature has risen due to the battery 28 and the DC/DC converter 30 can be preferentially sucked through the exhaust gas introduction opening 4202, and the cooling efficiency of the battery 28 and the DC/DC converter 30 is improved.
  • the exhaust gas introduction opening 4202 is arranged between the battery 28 and the DC-DC converter 30 near the DC-DC converter 30, and the first portion P1 located on the battery 28 side in the width direction thereof is DC- It projects into the battery case 26 more than the second portion P2 located on the DC converter 30 side.
  • the cooling air flowing through the third flow path 46C and the fifth flow path 46E collides with the portion of the exhaust gas introduction opening 4202 on the battery 28 side, so that it is directly sucked into the exhaust gas introduction opening 4202. Absent. Therefore, the cooling air flowing through the third flow path 46C and the fifth flow path 46E can be effectively used as the cooling air for cooling the battery 28 and the DC/DC converter 30, and the battery 28 and the DC/DC converter 30 can be cooled. It is more advantageous in improving efficiency.
  • the exhaust discharge opening 4204 of the first exhaust pipe 42 opens in the space between the rear floor pan 14 and the board 18. Therefore, by cooling the battery 28 and the DC/DC converter 30, the cooling air whose temperature has risen can be indirectly discharged into the passenger compartment instead of being directly discharged into the passenger compartment. It is advantageous in maintaining the sex.
  • the exhaust unit 24 includes a fan 54 provided in the first exhaust pipe 42. Therefore, by cooling the battery 28 and the DC/DC converter 30, it is possible to preferentially discharge the cooling air that has become high temperature, which is advantageous in increasing the cooling efficiency of the battery 28 and the DC/DC converter 30. ..
  • the fan 54 may be provided in the intake pipe 52, the present embodiment is more advantageous in increasing the cooling efficiency of the battery 28 and the DC/DC converter 30.
  • the battery 28 and the DC-DC converter 30 are arranged in the vehicle width direction. Further, the intake intake opening 5202 of the intake pipe 52 of the intake portion 22 is located inside the vehicle compartment. Further, the intake air outlet 5204 of the intake pipe 52 of the intake portion 22 is directed toward the battery 28 in the direction in which the battery 28 and the DC-DC converter 30 are arranged. Therefore, the cooling air can be blown directly from the intake air outlet 5204 toward the battery 28, which is advantageous in increasing the cooling efficiency of the battery 28.
  • the first exhaust pipe 42 and the fan 54 are located behind the DC-DC converter 30 in the vehicle and within the projection area of the DC-DC converter 30. Therefore, at the time of a rear collision of the vehicle, the first exhaust pipe 42 and the fan 54 do not interfere with the battery 28, which is advantageous in protecting the battery 28.
  • the second exhaust pipe 44 that exhausts the exhaust gas from the battery 28 into the side member 12 is provided. Therefore, the gas generated from the battery 28 can be discharged to the outside of the vehicle compartment, even though the cooling air after cooling the battery 28 is discharged to the vehicle compartment.
  • the second exhaust pipe 44 discharges the exhaust gas from the battery 28 into the side member 12, but the second exhaust pipe 44 discharges the exhaust gas from the battery 28 to the outside of the vehicle. In that case, the same effect as above can be obtained.
  • the gas generated from the battery 28 is exhausted into the inside of the side member 12 which is not airtight but is a closed space. Therefore, water or insects flowing into the second exhaust pipe 44 is prevented. It is advantageous in preventing intrusion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne une structure de refroidissement de batterie pour véhicule comprenant : un boîtier de batterie qui est supporté par la carrosserie de véhicule et loge une batterie et un convertisseur CC-CC ; une admission d'air qui introduit de l'air dans le boîtier de batterie ; et une partie d'échappement à travers laquelle est évacué l'air introduit dans le boîtier de batterie. La batterie est installée sur le côté en amont du trajet d'écoulement de l'air qui s'écoule de l'admission d'air à la partie d'échappement à l'intérieur du boîtier de batterie. Un convertisseur CC-CC est installé sur le côté en aval.
PCT/JP2020/003271 2019-01-30 2020-01-29 Structure de refroidissement de batterie pour véhicule WO2020158829A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020569700A JP7115570B2 (ja) 2019-01-30 2020-01-29 車両の電池冷却構造
CN202080011552.6A CN113366692A (zh) 2019-01-30 2020-01-29 车辆的电池冷却结构

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-013880 2019-01-30
JP2019013880 2019-01-30

Publications (1)

Publication Number Publication Date
WO2020158829A1 true WO2020158829A1 (fr) 2020-08-06

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Country Link
JP (1) JP7115570B2 (fr)
CN (1) CN113366692A (fr)
WO (1) WO2020158829A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021111850A1 (fr) * 2019-12-06 2021-06-10
JP2023037494A (ja) * 2021-09-03 2023-03-15 ダイハツ工業株式会社 バッテリ搭載構造

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004345451A (ja) * 2003-05-21 2004-12-09 Honda Motor Co Ltd 高圧電装部品の冷却構造
JP2005153827A (ja) * 2003-11-28 2005-06-16 Honda Motor Co Ltd 車両用蓄電装置及び車両モータ用高圧電装の冷却装置
JP2007106316A (ja) * 2005-10-14 2007-04-26 Toyota Motor Corp 蓄電装置の冷却構造

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Publication number Priority date Publication date Assignee Title
JP6070993B2 (ja) * 2013-05-14 2017-02-01 本田技研工業株式会社 車両用蓄電装置
WO2016143214A1 (fr) * 2015-03-06 2016-09-15 本田技研工業株式会社 Unité d'instrument à haute pression pour véhicule, unité de batterie pour véhicule et véhicule

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004345451A (ja) * 2003-05-21 2004-12-09 Honda Motor Co Ltd 高圧電装部品の冷却構造
JP2005153827A (ja) * 2003-11-28 2005-06-16 Honda Motor Co Ltd 車両用蓄電装置及び車両モータ用高圧電装の冷却装置
JP2007106316A (ja) * 2005-10-14 2007-04-26 Toyota Motor Corp 蓄電装置の冷却構造

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021111850A1 (fr) * 2019-12-06 2021-06-10
WO2021111850A1 (fr) * 2019-12-06 2021-06-10 三菱自動車工業株式会社 Bloc-batterie de véhicule
JP7248151B2 (ja) 2019-12-06 2023-03-29 三菱自動車工業株式会社 車両用電池パック
JP2023037494A (ja) * 2021-09-03 2023-03-15 ダイハツ工業株式会社 バッテリ搭載構造
JP7336492B2 (ja) 2021-09-03 2023-08-31 ダイハツ工業株式会社 バッテリ搭載構造

Also Published As

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CN113366692A (zh) 2021-09-07
JPWO2020158829A1 (ja) 2021-11-11
JP7115570B2 (ja) 2022-08-09

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