JP6608158B2 - Multiple parts simultaneous cooling structure - Google Patents

Description

  The present invention relates to a multiple component simultaneous cooling structure that simultaneously cools both a battery and an electrical component mounted on a vehicle.

  JP-A-2004-306726 discloses a structure that can cool the battery 2 and the electrical component 3 at the same time with cooling air flowing between the battery 2 and the electrical component 3, as shown in FIG. .

However, the conventional structure has the following problems.
Depending on the electrical component 3, there is a calorific value map in which the calorific value varies depending on the location. However, in the conventional structure, no consideration is given to the calorific value map of the electrical component 3. Therefore, there is room for improvement in terms of enhancing the cooling effect.

JP 2004-306726 A

  An object of the present invention is to provide a multi-component simultaneous cooling structure capable of enhancing the cooling effect as compared with the prior art.

The present invention for achieving the above object is as follows.
(1) Cooling air is supplied to a space between a battery and an electrical component mounted on a vehicle and in contact with both the battery and the electrical component, thereby simultaneously cooling both the battery and the electrical component. A multiple component simultaneous cooling structure,
Having a duct for sending cooling air into the space;
The duct includes a duct main body having an internal flow path communicating with the space, and a slit plate provided at a downstream end of the duct main body in the cooling air flow direction, and the slit plate includes a plurality of slit plates. Is made by forming a slit,
The multiple component simultaneous cooling structure in which the width and / or position of each slit of the plurality of slits is adjusted according to a heat generation amount map of the electrical component.
(2) The multiple component simultaneous cooling structure according to (1), wherein the slit plate is manufactured separately from the duct body and is fixed to the duct body.
(3) The battery includes a space corresponding part that forms the space between the electric component and a duct corresponding part that is outside the space corresponding part and faces the duct.
The multiple component simultaneous cooling structure according to (1) or (2), wherein an opening is set in a portion of the duct body that faces the duct corresponding portion of the battery.

According to the multiple component simultaneous cooling structure of (1) above, the duct for sending the cooling air into the space between the battery and the electrical component is provided with the duct body and the slit provided at the downstream end of the duct body in the cooling air flow direction And a board. The slit plate is produced by forming a plurality of slits in the plate material, and the width and / or position of each slit of the plurality of slits is adjusted in accordance with the calorific value map of the electrical component. Therefore, the flow rate of the cooling air flowing through the high heat generation part of the electrical component can be increased as compared with the flow rate of the cooling air flowing through the low heat generation part of the electrical component, and the cooling effect can be enhanced as compared with the conventional case.

According to the multiple component simultaneous cooling structure of (2) above, the slit plate is formed separately from the duct main body and is fixed to the duct main body. . Therefore, it is advantageous in terms of cost.

According to the multiple component simultaneous cooling structure of (3) above, the opening is set in the portion of the duct body that faces the duct corresponding portion of the battery. Therefore, the following effects can be obtained.
(I) Even when the battery has a duct-corresponding portion, the duct-corresponding portion of the battery can be cooled by the cooling air flowing in the duct.
(Ii) Even if an opening is set in a part of the duct body that faces the duct corresponding part of the battery, the flow rate of the cooling air flowing from the duct body through the slit to the space between the battery and the electrical component is changed. Therefore, the influence on the cooling of the electrical parts is negligible.

It is a top view of the multiple component simultaneous cooling structure of this invention Example. It is an AA line expanded sectional view of FIG. It is a BB line expanded sectional view of Drawing 1. It is a disassembled perspective view of a duct of the multiple component simultaneous cooling structure of the embodiment of the present invention. It is a model perspective view which shows the relationship between the slit board and the emitted-heat amount map of an electrical component of the multiple components simultaneous cooling structure of this invention Example. It is a perspective view of the conventional multiple components simultaneous cooling structure.

  Hereinafter, a multiple component simultaneous cooling structure according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 3, a multiple component simultaneous cooling structure (hereinafter also simply referred to as a cooling structure) 10 according to an embodiment of the present invention includes a space 40 between a battery 20 mounted on a vehicle and an electrical component 30 (DCDC converter). This is a multi-component simultaneous cooling structure that simultaneously cools both the battery 20 and the electrical component 30 by flowing cooling air, and has a duct 50 that feeds cooling air into the space 40.

  As shown in FIG. 1, the battery 20 includes first and second batteries 21 and 22 provided side by side. The first and second batteries 21 and 22 are arranged such that the cooling air flow direction is the longitudinal direction. The first battery 21 and the second battery 22 are arranged side by side (in a direction perpendicular to the respective longitudinal directions) on the same plane so that the longitudinal directions thereof are parallel to each other. The length of the first battery 21 in the longitudinal direction is larger than the length of the second battery 22 in the longitudinal direction. The upstream end 21 a in the cooling air flow direction of the first battery 21 is upstream of the upstream end 22 a in the cooling air flow direction of the second battery 22. The downstream end 21b of the first battery 21 in the cooling air flow direction is at the same position (including substantially the same) as the downstream end 22b of the second battery 22 in the cooling air flow direction.

  The electrical component 30 is, for example, a DCDC converter that generates a relatively large amount of heat. As shown in FIG. 2, the electrical component 30 is disposed above the first and second batteries 21 and 22 and spaced from the first and second batteries 21 and 22. The electrical component 30 is disposed such that the lower surface faces the upper surfaces of the first and second batteries 21 and 22. As shown in FIG. 1, the upstream end 30 a in the cooling air flow direction of the electrical component 30 is located downstream of the upstream end 21 a in the cooling air flow direction of the first battery 21, and the cooling air of the second battery 22. It is in the same position (including substantially the same) as the upstream end 22a in the flow direction. The cooling air flow direction downstream end 30b of the electrical component 30 is located upstream of the cooling air flow direction downstream ends 21b and 22b of the first and second batteries 21 and 22. The length (width) of the electrical component 30 in the direction perpendicular to the vertical direction and perpendicular to the cooling air flow direction is the same as (including substantially the same) the length of the battery 20 in the same direction.

  Each of the first and second batteries 21 and 22 generates heat uniformly over substantially the whole. On the other hand, the electrical component 30 generates heat (sparsely) at a plurality of locations P as shown in FIG. Further, the amount of heat generated at each of the plurality of places P is also different, and there are a high heat generation portion and a low heat generation portion. That is, the electrical component 30 has a calorific value map M in which the calorific value varies depending on the location.

  As shown in FIG. 2, the space 40 is a space formed between the battery 20 and the electrical component 30. By flowing cooling air through the space 40, the battery 20 (first and second batteries 21 and 22) and the electric component 30 are simultaneously cooled. In order to enhance the cooling effect, the fins 31 may be formed in the battery 20 and / or the electrical component 30. In the illustrated example, the fin 31 is provided only in the electric component 30.

  In order to prevent the cooling air flowing through the space 40 from leaking through the gap between the first and second batteries 21 and 22, the space between the first and second batteries 21 and 22 is made of a metal plate or the like. Covered with a seal plate 41. In order to prevent the cooling air flowing through the space 40 from leaking from the gap between the battery 20 and the electrical component 30, a seal member 42 made of sponge or the like is provided between the battery 20 and the electrical component 30. Yes.

  As shown in FIG. 3, the battery 20 has a space corresponding portion 23 that is vertically opposed to the electrical component 30 and forms a space 40 with the electrical component 30. A duct corresponding portion 24 facing in the direction.

  The duct 50 is made of resin, for example. As shown in FIG. 4, the duct 50 includes a duct main body 51 including an internal flow path 51 a communicating with the space 40, and a slit plate 52 provided at the downstream end of the duct main body 51 in the cooling air flow direction.

An inlet 51b for introducing cooling air into the internal flow path 51a is provided at the upstream end of the duct body 51 in the cooling air flow direction. The slit plate 52 is formed separately from the duct body 51 and is fixedly attached to the downstream end of the duct body 51 in the cooling air flow direction. The fixing of the slit plate 52 to the duct main body 51 is, for example, welding or adhesion. The slit plate 52 is produced by forming a plurality of slits 52a on a single plate material. The width and / or position of each slit 52 a of the plurality of slits 52 a is adjusted according to the heat generation amount map M of the electrical component 30. Specifically, the width and / or position of each slit 52a of the plurality of slits 52a is such that the flow rate of the cooling air flowing through the high heat generation portion of the electrical component 30 is relatively large and flows through the low heat generation portion of the electrical component 30. The flow rate of the cooling air is adjusted so as to be relatively small. In order to increase the flow rate of the cooling air flowing through the high heat generating portion of the electrical component 30, it is conceivable to increase the width of the slit 52a and increase the amount of the slit 52a. In order to reduce the flow rate of the cooling air flowing through the part, it is conceivable to reduce the width of the slit 52a and reduce the amount of the slit 52a.

As shown in FIG. 3, the duct main body 51 includes a battery facing portion 51 c that is disposed facing the duct corresponding portion 24 of the battery 20 in the vertical direction. An opening 51d is set in the battery facing portion 51c. Through the opening 51 d, the cooling air flowing through the internal flow path 51 a of the duct body 51 can come into contact with the duct corresponding part 24 of the battery 20. A seal member 53 that fills the gap between the duct main body 51 and the duct corresponding portion 24 is provided around the opening 51d in order to prevent the cooling air from leaking.

A part of the cooling air introduced from the introduction port 51b into the internal flow path 51a contacts the duct corresponding part 24 of the battery 20 through the opening 51d, and heat exchange is performed between the cooling air and the duct corresponding part 24. After that, it flows into the space 40 through the slit 52 a provided in the slit plate 52. Then, when flowing through the space 40, heat exchange is performed between both the space corresponding portion 23 of the battery 20 and the electrical component 30, and flows into the outlet side duct 60 provided on the downstream side of the space 40, and the outlet side duct. 60 is discharged to the outside.

Next, the operation and effect of the embodiment of the present invention will be described.
In the embodiment of the present invention, a duct 50 for sending cooling air into the space 40 between the battery 20 and the electrical component 30 includes a duct body 51 and a slit plate 52 provided at the downstream end of the duct body 51 in the cooling air flow direction. And. The slit plate 52 is produced by forming a plurality of slits 52 a on the plate material, and the width and / or position of each slit 52 a of the plurality of slits 52 a corresponds to the heat generation amount map M of the electrical component 30. Have been adjusted. Therefore, the flow rate of the cooling air flowing through the high heat generation portion of the electrical component 30 can be increased as compared with the flow rate of the cooling air flowing through the low heat generation portion of the electrical component 30, and the cooling effect of the electrical component 30 can be improved compared to the conventional case. Can be increased.

Although it is conceivable to adjust the flow rate of the cooling air flowing through the space 40 by providing a rib (not shown) inside the duct body 51 without providing the slit plate 52 at the downstream end of the duct body 51, There are problems (a) to (c).
(A) The rib must be provided so as to extend from the intermediate portion in the cooling air flow direction to the vicinity of the downstream end portion. For this reason, the rib distribution according to the heat generation amount map M of the electrical component 30 has a high pressure loss and a low flow rate.
(B) Since the electrical component 30 generates heat at a relatively large number of places, it takes time to study the rib distribution shape of the duct 50.
(C) When the calorific value of the electrical component 30 is changed, it is necessary to recreate the entire duct 50, which requires a modification of a mold for forming the duct 50, and costs increase.
On the other hand, in the present invention, since the separate slit plate 52 is provided at the downstream end of the duct body 51, the following effects are obtained.
Since the slit plate 52 is provided only at the downstream end of the duct body 51 with respect to (a) above, pressure loss can be suppressed and the flow rate can be increased as compared with the case where ribs are provided.
With regard to (b), the electrical component 30 generates heat at a relatively large number of locations. However, since only the width and / or position of the slit 52 needs to be considered, the number of steps for manufacturing the duct can be reduced as compared with the case where ribs are provided.
Since only the width of the slit 52 needs to be changed in order to change the heat generation amount of the electrical component 30 in the above (c), it is advantageous in terms of cost.

Since the slit plate 52 is formed separately from the duct main body 51 and is fixed to the duct main body 51, it is possible to respond to the change in the heat generation amount of the electrical component 30 only by changing the slit plate 52. Therefore, it is advantageous in terms of cost.

An opening 51 d is set in a portion 51 c of the duct body 51 that faces the duct corresponding portion 24 of the battery 20. Therefore, the following effects can be obtained.
(I) Even if the battery 20 has the duct corresponding part 24, the duct corresponding part 24 of the battery 20 can be cooled by the cooling air flowing in the duct 50.
(Ii) Even if the opening 51d is set in the portion 51c of the duct body 51 that faces the duct corresponding portion 24 of the battery 20, the gap between the battery 20 and the electrical component 30 passes from the duct body 51 through the slit 52a. Since the flow rate of the cooling air flowing through the space 40 does not change, the influence on the cooling of the electrical component 30 is negligible.

10 Multiple component simultaneous cooling structure 20 Battery 21 First battery 22 Second battery 23 Space corresponding portion 24 Duct corresponding portion 30 Electrical component 40 Space 50 Duct 51 Duct body 51a Internal flow path 51b Inlet 51c Battery facing portion 51d Open 52 Slit plate 52a Slit 60 Outlet side duct M Calorific value map

Claims (3)

A plurality of components that cools both the battery and the electrical component simultaneously by flowing cooling air in a space between the battery and the electrical component mounted on the vehicle and in contact with both the battery and the electrical component. A simultaneous cooling structure,
Having a duct for sending cooling air into the space;
The duct includes a duct main body having an internal flow passage communicating with the space, and a slit plate provided at a downstream end of the duct main body in the cooling air flow direction. The slit plate includes a plurality of slit plates. Is made by forming a slit,
The multiple component simultaneous cooling structure in which the width and / or position of each slit of the plurality of slits is adjusted according to a heat generation amount map of the electrical component.   The multi-component simultaneous cooling structure according to claim 1, wherein the slit plate is manufactured separately from the duct body and fixed to the duct body. The battery includes a space corresponding portion that forms the space between the electric component and a duct corresponding portion that is outside the space corresponding portion and faces the duct.
The multi-component simultaneous cooling structure according to claim 1, wherein an opening is set in a portion of the duct body that faces the duct corresponding portion of the battery.

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