JP2019121573A - Refrigeration structure of secondary battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling structure for a secondary battery capable of sucking a sufficient amount of air. A cooling structure 1 for a secondary battery includes a duct 30, an intake port forming member 20, a filter 40, and a mounting member 10. The mounting member 10 includes a hollow cylindrical portion 11. The axial direction of the tubular portion 11 is a direction along the flow of air taken into the intake port 21. A gap 24 is formed between the peripheral edge of the intake port 21 and the outer periphery of the tubular portion 11 and serves as a flow path for air taken into the intake port 21. The internal space 11c of the tubular portion 11 communicates with the internal space 31 of the duct 30. The tubular portion 11 has one end 11 a on the downstream side of the flow of air taken into the intake port 21. The tubular portion 11 has the other end 11b on the upstream side of the flow of air taken into the intake port 21. The tubular portion 11 has a bottomed tubular shape with one end 11a opened and the other end 11b closed. The filter 40 is attached to the one end 11a. [Selection diagram] Figure 2

Description

  The present disclosure relates to a cooling structure of a secondary battery.

  A technique for causing air in a vehicle compartment that has flowed in through an opening of a rear par shell to flow into the air intake duct from the opening of the air intake duct is related to, for example, Japanese Patent Application Laid-Open No. 2009-161062 (Patent Document 1). Is disclosed in

JP, 2009-161062, A

  In the cooling device disclosed in the above-mentioned document, in order to take in the air for heating element cooling from the gap between the rear par shell and the cap, it may not be possible to take in air sufficiently.

  In the present disclosure, a cooling structure of a secondary battery capable of drawing in a sufficient amount of air is provided.

  A cooling structure of a secondary battery according to the present disclosure includes a duct, an inlet formation member, a filter, and an attachment member. Air supplied to the secondary battery passes through the duct. The intake port forming member is formed with an intake port for taking in air flowing into the duct. The filter filters air taken in from the air intake. The filter is attached to the attachment member. The mounting member includes a hollow cylindrical portion. The axial direction of the cylindrical portion is a direction along the flow of air taken into the air intake. Between the periphery of the intake port and the outer periphery of the cylindrical portion, a gap which is a flow path of air taken into the intake port is formed. The internal space of the tube portion communicates with the internal space of the duct. The tubular portion has one end on the downstream side of the flow of air taken into the intake port. The tube portion has the other end on the upstream side of the flow of air taken into the intake port. The cylindrical portion has a bottomed cylindrical shape in which one end is open and the other end is closed. The filter is attached at one end.

  According to the above-described cooling structure of the secondary battery, the opening area of the gap for taking in air can be sufficiently secured. Thus, an amount of air sufficient to cool the secondary battery can be taken from the gap.

  According to the present disclosure, it is possible to realize a cooling structure of a secondary battery capable of taking in a sufficient amount of air.

It is a schematic side view of the seat part in a vehicle interior. It is a schematic sectional drawing of the sheet | seat part which follows the II-II line shown in FIG. It is a schematic perspective view of a mounting member according to an embodiment. It is a schematic perspective view of the duct connection part according to embodiment.

  Hereinafter, embodiments of the present disclosure will be described based on the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

  FIG. 1 is a schematic side view of a seat portion 100 in a vehicle cabin. A seat portion 100 is provided in the passenger compartment. The double arrows illustrated in FIG. 1 indicate the vertical direction DR1 and the longitudinal direction DR2. The up and down direction DR1 is the height direction of the seat portion 100, which is the up and down direction in FIG. The longitudinal direction DR2 is the forward and reverse direction of the vehicle, and is orthogonal to the vertical direction DR1. The longitudinal direction DR2 is the left and right direction in FIG.

  The vehicle is equipped with a secondary battery (not shown). The secondary battery according to the embodiment is mounted on a hybrid vehicle. Secondary batteries are used as power sources for hybrid vehicles, as well as internal combustion engines such as gasoline engines and diesel engines. The secondary battery is disposed under the floor of the vehicle. As another example, the secondary battery is mounted on an electric vehicle or a fuel cell vehicle.

  The secondary battery generates heat as it charges and discharges. In order to cool the generated secondary battery, the air in the passenger compartment is supplied to the secondary battery by a cooling fan or the like (not shown).

  The cooling structure 1 of the secondary battery includes an intake port forming member 20, a bezel 50, and a mounting member 10. The intake port forming member 20, the bezel 50, and the mounting member 10 are provided on the side of the seat portion 100. An intake port 21 is formed in the intake port forming member 20. The intake port 21 takes in air flowing into a duct 30 described later. A bezel 50 is attached to the periphery of the intake port 21.

  The bezel 50 has a plurality of longitudinal members 50a and transverse members 50b. The vertical member 50a has a shape extending in the vertical direction DR1. The cross member 50b has a shape extending in the front-rear direction DR2. The plurality of longitudinal members 50a and the lateral members 50b are disposed to cross each other. A hole 50 c is formed in the bezel 50 by arranging the plurality of vertical members 50 a and the horizontal members 50 b at intervals. The bezel 50 has a lattice-like shape. The mounting member 10 is attached to the bezel 50. The mounting member 10 is enclosed by a bezel 50. Details of the mounting member 10 will be described later.

(Secondary battery cooling structure 1)
FIG. 2 is a schematic cross-sectional view of the seat portion 100 along the line II-II shown in FIG. FIG. 3 is a schematic perspective view of the mounting member 10 according to the embodiment. The cooling structure 1 of the secondary battery will be described with reference to FIGS. 2 and 3.

  A concave space 22 is formed in the intake port forming member 20. The recessed space 22 is formed such that a part of the surface of the inlet port forming member 20 is recessed. An insertion space 23 is further formed in the intake port forming member 20. The insertion space 23 is formed in a direction away from the air inlet 21 with respect to the concave space 22. The insertion space 23 communicates with the concave space 22.

  The cooling structure 1 of the secondary battery further includes a tubular duct 30. The duct 30 is inserted into the insertion space 23. An internal space 31 is formed in the duct 30. Air supplied to the secondary battery passes through the internal space 31. The mounting member 10 is connected to the duct 30.

  The attachment member 10 is attached to the bezel 50 so as to be inserted into the concave space 22. The mounting member 10 includes a hollow cylindrical portion 11. One of the double arrows shown in FIG. 2 indicates the axial direction DR3. The axial direction DR3 is the axial direction of the cylindrical portion 11, and is the vertical direction in FIG. The axial direction DR3 is a direction along the flow of air taken into the intake port 21. The flow of air taken into the air inlet 21 refers to the flow when macroscopically looking at air entering the concave space 22 from the air inlet 21 (arrow A in FIG. 2).

  The cylindrical portion 11 and the duct 30 are disposed substantially coaxially. The cylindrical portion 11 has a diameter larger than that of the duct 30. An internal space 11 c is formed inside the cylindrical portion 11. The internal space 11 c communicates with the internal space 31 of the duct 30. The cylindrical portion 11 has one end 11a. The one end 11 a is an end portion of the cylindrical portion 11 at the downstream side of the flow of air taken into the intake port 21. One end 11a is open.

  The cylinder part 11 has the other end 11b. The other end 11 b is an end of the cylindrical portion 11 on the upstream side of the flow of air taken into the air intake port 21. The other end 11 b is closer to the intake port 21 than the one end 11 a in the axial direction DR3.

  The mounting member 10 further includes a plate-like lid 12. The lid 12 is provided at the other end 11 b. The other end 11 b is closed by the lid 12. The cylindrical portion 11 has a bottomed cylindrical shape in which one end 11 a is open and the other end 11 b is closed. The lid 12 has a back surface 12 a and a front surface 12 b. The back surface 12 a is a surface facing the internal space 11 c of the lid 12. The surface 12 b is a surface facing the passenger compartment, which is opposite to the inner space 11 c of the lid 12.

  A gap 24 is formed between the outer periphery of the cylindrical portion 11 and the peripheral edge of the intake port 21. The gap 24 is a flow path of air taken into the air inlet 21. Air flowing into the duct 30 is taken in from the hole 50 c of the bezel 50 provided in the gap 24.

  The mounting member 10 further includes a protrusion 14 and a sound absorbing material 16. The protrusion 14 and the sound absorbing material 16 are provided in the internal space 11 c. The protrusion 14 protrudes from the back surface 12 a of the lid 12 toward the internal space 11 c. The protrusion 14 is welded to the lid 12. The sound absorbing material 16 absorbs noise generated by the operation of a cooling fan (not shown). The sound absorbing material 16 is provided on the back surface 12a. The sound absorbing material 16 is disposed so as to be sandwiched by the protrusions 14.

  The mounting member 10 further includes an engagement portion 15. The engaging portion 15 protrudes from the outer peripheral surface of the cylindrical portion 11. The mounting member 10 is fixed at a fixed position by the engagement between the engaging portion 15 and the bezel 50.

  FIG. 4 is a schematic perspective view of the duct connection portion 13 according to the embodiment. The duct connection portion 13 will be described with reference to FIGS. 2 to 4. The mounting member 10 further includes a cylindrical duct connection portion 13. The duct connection portion 13 has a diameter smaller than that of the cylindrical portion 11. The duct connection portion 13 has a diameter larger than that of the duct 30. The duct connection portion 13 is connected to the duct 30. The duct connection portion 13 and the cylindrical portion 11 are disposed substantially coaxially.

  The duct connection portion 13 is provided in the internal space 11c. The duct connection portion 13 is disposed between the cylindrical portion 11 and the duct 30. The duct connection portion 13 is formed with a plurality of strip-like slit portions 13 a. The formation of the slit portion 13 a allows air to move from the outer peripheral side of the duct connection portion 13 to the inner peripheral side of the duct connection portion 13.

  The cooling structure 1 of the secondary battery further includes a filter 40. The filter 40 filters the air taken in from the air inlet 21. The filter 40 collects foreign matter in the air. The filter 40 is attached to the attachment member 10. The filter 40 is attached to one end 11a. The filter 40 is disposed between the inner peripheral surface of the cylindrical portion 11 and the outer peripheral surface of the duct connection portion 13. The filter 40 is annularly disposed on the outer periphery of the duct connection portion 13.

  As shown in FIG. 2, the cooling structure 1 of the secondary battery includes a first seal portion 70 and a second seal portion 71. The first seal portion 70 is disposed between the peripheral edge of the insertion space 23 and the outer peripheral surface of the duct 30. The first seal portion 70 suppresses air from leaking between the peripheral edge of the insertion space 23 and the outer peripheral surface of the duct 30. The first seal portion 70 suppresses the flow of air from the concave space 22 to the insertion space 23 and promotes the flow of air from the concave space 22 to the internal space 11 c.

  The second seal portion 71 is disposed between the outer peripheral surface of the duct 30 and the inner peripheral surface of the duct connection portion 13. The second seal portion 71 suppresses air from leaking between the outer peripheral surface of the duct 30 and the inner peripheral surface of the duct connection portion 13. The second seal portion 71 suppresses the backflow of air from the internal space of the duct connection portion 13 to the concave space 22, and promotes the flow of air from the internal space of the duct connection portion 13 to the internal space 31 of the duct 30. There is.

  The flow of the air taken in from the gap 24 (the hole 50c) will be described with reference to FIG. By operating a cooling fan (not shown), air supplied to the secondary battery is taken in from the gap 24. The air taken in from the gap 24 enters the concave space 22. Thereafter, as shown by arrow C in FIG. 2, the air wraps around one end 11 a of the cylindrical portion 11 and enters the filter 40. The air having passed through the filter 40 flows between the inner circumferential surface of the cylindrical portion 11 and the outer circumferential surface of the duct connection portion 13 and passes through the slit portion 13a. The air having passed through the slit portion 13a flows into the duct 30, and is supplied to the secondary battery through the cooling fan.

(Action effect)
As shown in FIG. 2, a gap 24 for taking in air supplied to the secondary battery is open to the vehicle compartment. By securing the opening area of the gap 24 sufficiently, a sufficient amount of air can be taken from the gap 24 to cool the secondary battery. Thereby, the intake efficiency of the cooling structure 1 of the secondary battery can be improved.

  The cooling structure 1 of the secondary battery according to the embodiment has a structure in which the filter 40 can not be seen when viewed from the surface 12 b side of the lid portion 12, that is, the cabin side. As a result, even when foreign matter is deposited on the filter 40, it is possible to maintain good appearance when looking at the inside (concave space 22) of the intake port forming member 20 from the surface 12b side.

  Furthermore, in the cooling structure 1 of the secondary battery according to the embodiment, the filter 40 and the cooling fan do not exist on the extension of the direction in which the air taken into the gap 24 flows (arrow A in FIG. 2). Therefore, even when a foreign object such as a rod-like member is inserted from the hole 50c of the bezel 50, the foreign object entering from the gap 24 can be prevented from reaching the filter 40 and the cooling fan. As a result, the blocking of the filter 40 and the generation of abnormal noise in the cooling fan can be suppressed.

  In addition, even if water is spilled near the air inlet 21, the water can be prevented from reaching the filter 40 and the cooling fan. Thereby, the filter 40 and the cooling fan can be extended in life.

  The operation of the cooling fan generates noise. The noise propagates through the duct 30 to the open arrow B in FIG. 2 toward the lid 12 extending in a direction substantially perpendicular to the direction in which the duct 30 extends. By providing the sound absorbing material 16 on the back surface 12 a of the lid 12, the noise is incident substantially perpendicularly to the sound absorbing material 16. Thereby, the said noise can be absorbed efficiently.

  The mounting member 10 is fixed at a fixed position by the engagement between the engaging portion 15 and the bezel 50. The mounting member 10 can be removed from the bezel 50 by releasing the engagement between the engaging portion 15 and the bezel 50. The mounting member 10 is removable from the bezel 50. Thereby, maintenance such as cleaning of the filter 40 can be facilitated.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is indicated not by the above description but by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

  DESCRIPTION OF SYMBOLS 1 cooling structure, 10 attachment member, 11 cylinder part, 11a one end, 11b other end, 11c internal space, 12 lid part, 12a back surface, 12b surface, 13 duct connection part, 13a slit part, 14 protrusion part, 15 engagement part , 16 sound absorbing material, 20 air inlet formation member, 21 air inlet, 22 concave space, 23 insertion space, 24 clearance, 30 duct, 31 internal space, 40 filter, 50 bezel, 50a vertical member, 50b horizontal member, 50c hole , 70 first seal portion, 71 second seal portion, 100 seat portion, DR1 vertical direction, DR2 longitudinal direction, DR3 axial direction.

Claims (1)

A duct through which air supplied to the secondary battery passes;
An inlet formation member having an inlet formed therein for taking in air flowing into the duct;
A filter for filtering air taken in from the air inlet;
A mounting member to which the filter is attached;
The mounting member includes a hollow cylindrical portion,
The axial direction of the cylinder portion is a direction along the flow of air taken into the air inlet,
Between the peripheral edge of the intake port and the outer periphery of the cylindrical portion, a gap serving as a flow path for air taken into the intake port is formed;
The internal space of the tube portion communicates with the internal space of the duct,
The cylindrical portion has one end on the downstream side of the flow of air taken into the air intake and the other end on the upstream side of the flow of air taken into the air intake,
The cylindrical portion has a bottomed cylindrical shape in which the one end is open and the other end is closed,
The filter is attached to the one end, the cooling structure of the secondary battery.

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