JPH062776U - Ventilation structure of electrical equipment storage box - Google Patents

Abstract

(57) [Abstract] [Purpose] A box having electric equipment is supported by a support having a ventilation passage, and the box has a ventilation duct base for communicating the inside of the box with the ventilation passage. In a ventilation structure in which is fixed, the sealability of the connection portion between the tip opening of the ventilation duct and the ventilation passage opening on the support side is improved, and the efficiency of connection work is improved, and at the same time, the connection structure is simplified and Increase the freedom of layout. [Configuration] Tip openings 13, 1 of ventilation ducts D _f , D _r
4 are openings 8 and 9 of the ventilation paths P _f and P _r in the support F.
With a gap s therebetween, and one end of the elastic seal member Se covering the gap s with the ventilation ducts D _f , D _r and the support F.
The seal member S is supported by either one of them and the other end of the seal member S is elastically brought into pressure contact with the other to block the gap s from the outside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ventilation structure for cooling with ventilation in a box for housing electrical equipment.

[0002]

[Prior art]

 Generally, various electric devices that use high voltage, so-called "high-voltage devices" (for example, batteries, motors, devices such as PDUs (power drive units) in electric vehicles) generate heat during operation. Therefore, the inside of the box that houses the equipment must be able to be cooled by ventilation.

[0003] Thus, while supporting such an electrical equipment storage box on a support body such as a vehicle body frame having a ventilation path via a mounting bracket, the box communicates with the inside of the box and the ventilation path. The ventilation structure in which the base of the ventilation duct is fixed is already known in electric vehicles and the like.

[0004]

[Problems to be solved by the device]

 If the mounting bracket and the ventilation duct are separately fixed to the box as in the above-mentioned conventional method, the relative mounting position of the ventilation duct with respect to the body frame is determined when the box is assembled and fixed to the body frame via the mounting bracket. Therefore, it is necessary to set a large clearance at the connecting portion so that the opening of the ventilation duct at the tip can always be fitted and connected to the duct receiving portion of the vehicle body frame regardless of the relative mounting position. However, there was a problem that the sealing property of the connection part was poor.

In order to solve such a problem, for example, the ventilation duct is made of a flexible material, and the free end of the duct is fastened to the duct receiving portion of the vehicle body frame with a fixture such as a bolt. However, in that case, there is another inconvenience that not only the number of parts is increased due to the special provision of the above-mentioned fixtures but also the man-hours for assembling work are increased and the cost is increased.

The present invention has been proposed in view of the above, and an object thereof is to provide a ventilation structure for a box for storing electrical equipment, which can solve all the problems of the conventional ones.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention supports a box containing electric equipment on a support having a ventilation passage, and the box has ventilation for communicating between the box and the ventilation passage. In a ventilation structure for a box for storing electrical equipment, in which a base of a duct is fixed, an end opening of the ventilation duct is made to face a ventilation passage opening of the support with a gap, and an elasticity is provided to cover the gap. First, one end of the seal member is supported by one of the ventilation duct and the support, and the other end of the seal member is elastically pressed against the other end to block the gap from the outside. The second characteristic is that a valve for adjusting the air volume that can open and close the ventilation passage is provided in the ventilation passage, and the support is the body frame of the electric vehicle, and the hollow portion of the body frame is provided. Less Also a third feature in that the part was the air passage.

[0008]

【Example】

 First, a first embodiment of the present invention will be described with reference to FIGS. First, as shown in FIG. 1, a vehicle body frame F serving as a support, which constitutes a floor portion of an electric vehicle, has a battery box B formed flat along the lower surface of the vehicle body frame F via a plurality of mounting brackets 1. In the battery box B, a plurality of batteries Ba arranged vertically and horizontally are accommodated. Thus, the battery Ba constitutes the electric device of the present invention, and the battery box B constitutes the electric device storage box of the present invention.

As is clear from FIGS. 1 and 2, the vehicle body frame F constituting the floor portion includes a pair of left and right main beams Mb extending in the front-rear direction and a pair of front and rear main beams Mb integrally connecting the main beams Mb. crossbeam Cb _f, and Cb _r, before they comprises at least a floor panel Fp to be No設integrally on the upper surface of the beam, before and after the click Rosubimu Cb _f, the hollow portion of the Cb _r respectively, the rear air passage P _f and P _r are configured, and the ventilation paths P _f and P _r are independently opened to the atmosphere through atmospheric opening ports (not shown) separately provided at appropriate places of the body frame F. Has been done. Incidentally, front and rear cross beam Cb _f, each intermediate portion of the Cb _r, the front through the said beam, the plug so that the rear air passage P _f, between P _r is not short-circuited (not shown) is provided.

The battery box B is composed of a box body 2 having an opening on the upper surface, and a lid body 3 on which the upper surface opening of the box body 2 is detachably attached with a fastener not shown. The base portions of the pair of front and rear mounting brackets 1 are respectively fixed to a pair of opposing side walls (left and right side walls in the illustrated example) of the box body 2 by fixing means such as welding. The front portion of 1 is fixed to the left and right main beams Mb, Mb of the vehicle body frame F by suitable fixing means (bolts 4 in the illustrated example).

As shown in FIG. 3, each of a pair of other side walls (front and rear side walls in the illustrated example) of the box main body 2 which face each other corresponds to the through holes 2 a formed in the side walls. Duct support cylinder 5_f, 5_rThe base end of the is integrally projected by a fixing means such as welding. One of the duct support cylinders 5_fInside, there is a blower fan unit F for introduction for sucking in and introducing outside air into the battery box B._fHowever, the other duct support cylinder 5 _r A blower fan unit F for discharge for sucking and discharging the air in the battery box B_rAre fitted from inside the box body 2 through the corresponding through holes 2a. Each duct support cylinder 5_f, 5_rThe tip openings of the cross beams Cb are close to them._f, Cb_rVentilation path P inside_f, P_rVentilation duct D_f, D_r And communicate with each other.

An outward flange portion f is integrally provided at the base end opening of each ventilation duct D _f , D _r , and the flange portion f is the tip of the corresponding duct support cylinder 5 _f , 5 _r . The inwardly facing flange portion f ′ integrally provided in the opening is sandwiched and abutted against the outwardly facing flange portion f ″ of the cylindrical unit case 6 of each blower fan unit F _f , F _r. The flanges f, f ′, f ″ are fastened together by bolts 7. Upwards and whose respective through duct D _f, tip opening 13, 14 of D _r is the corresponding crossbeam Cb _f, where Cb air passage in _r P _f, P _r of the bottom wall w _f, provided w _r The flanged openings 8 and 9 face a radial gap s, and the gap s is covered by a ring-shaped elastic seal member Se described below and shielded from the outside.

As shown in FIG. 4, the elastic seal member Se has a ventilation duct D._f, D_rIt is composed of an annular base end portion 10 that is fitted and supported on the base end portion 10 and a similar annular elastic lip portion 11 that is integrally connected to the base end portion 10. The base end portion 10 has a ventilation duct D._f, D _r It is fixed to the annular seal mounting seat 12 that is integrally bulged on the outer periphery of the tip end portion thereof by a fixing means such as adhesion or baking. The elastic lip portion 11 has a ventilation path P from the base end portion 10._f, P_rIt is formed in a taper shape that widens toward the front, and in normal times, the elasticity of the lip portion 11 itself causes the tip portion 11a to block the gap s from the outside so that the air passage P_f, P_rBottom wall w_f, W_rWhen the inner pressure of the battery box B exceeds a predetermined value, the bottom wall w is elastically pressed around the openings 8 and 9 as shown by a chain line in FIG._f, W_rIt can be elastically deformed so as to open the gap s to the outside with a further separation.

[0014] Within one air passage P _r, it is disposed proximate the valve V which can open and close therethrough in the open mouth 9 of the vent air passage P _r, the valve V is blowing fan unit In the operating state of F _f and F _r , the opening degree of the valve V is adjusted manually or by a control means (not shown) according to the running state of the vehicle, thereby adjusting the air volume of the air flowing in the battery box B. can do.

Next, the operation of the above embodiment will be described. When the battery box B is mounted on the vehicle body, the blower fan unit F is provided with the base end openings 10 of the corresponding ventilation ducts D _f and D _r in advance in the respective duct support cylinders 5 _f and 5 _r of the box B. The unit case 6 of _f and F _r is fixed together with a bolt 7 and the base end portion 10 of the elastic seal member Se is attached to the seal mounting seat 12 at the tip end of each ventilation duct D _f and D _r. .

In this state, when the battery box B is assembled and fixed to the predetermined position of the main beam Mb of the vehicle body frame F with the bolts 4 via the mounting bracket 1, the front end openings 13, 13 of the ventilation ducts D _f , D _r , 14 can face the openings 8 and 9 of the bottom walls w _f and w _r of the corresponding ventilation passages P _f and P _{r with} a radial gap s. At this time, in the elastic seal member Se at the tip of each ventilation duct D _f , D _{r, the} tip 11a of the elastic lip portion 11 elastically moves around the openings 8 and 9 on the lower surface of the bottom walls w _f and w _r. Since the gap s can be blocked by pressure from the outside, it is possible to prevent dust, rainwater, or the like from entering from the outside into the battery box B and the ventilation paths P _f and P _r through the gap s. it can.

It should be noted that, due to processing / assembly errors of the respective parts, the relative positions of the front end openings 13, 14 of the respective ventilation ducts and the corresponding openings 8, 9 of the bottom walls w _f , w _r are considered. Even if some deviation occurs, it can be absorbed by the elastic deformation of the lip portion 11 of the elastic seal member Se, so that each gap s between both openings 8, 13; It is possible to cut off more accurately at all times.

Thus, with the battery box B fixed to the vehicle body frame F, the blower fan unit F is operated manually or by control means (not shown) according to the operating state of the vehicle._f, F _r When the fan is operated, as shown by the arrow a (Figs. 2 to 4), the introduction fan unit F_fBased on the suction action of the vehicle body F, the front cross beam Cb from the atmosphere opening (not shown) of the body frame F_fVentilation path P inside_fAnd ventilation duct D_fAir is introduced into the battery box B through the inside, and the air in the battery box B is discharged into the fan unit F for exhaust._rVentilation duct D based on the suction and discharge action of_rInner and rear cross beam Cb_rVentilation path P inside_rAfter that, the gas is discharged into the atmosphere from another atmosphere opening port (not shown) of the body frame F.

Therefore, since the air in the battery box B is sufficiently replaced, the hydrogen gas generated from each battery Ba can be prevented from accumulating in the battery box B, and the heat generated from each battery Ba can be prevented. Thus, it is possible to prevent the temperature inside the battery box B from rising excessively.

Further, in the operating state of the blower fan units F _f , F _r , if the opening degree of the valve V is adjusted manually or by a control means (not shown) according to the running state of the vehicle, the air flowing in the battery box B can be adjusted. It is possible to adjust the air volume and the air pressure of the air conditioner, and further adjust the temperature in the box B. Further, in particular, when the valve V is closed, excess air flowing in the battery box B can be released by elastic deformation of the elastic lip portion 11 of the elastic seal member Se (see the chain line in FIG. 4). The pressure in the box B can be kept substantially constant.

Further, FIG. 5 shows a second embodiment of the present invention. In this embodiment, the tip openings 13, 14 of the ventilation ducts D _f , D _r are also radially directed to the openings 8, 9 of the bottom walls w _f , w _r of the ventilation passages P _f , P _r. Further, a gap s is present in the vertical direction as well, and in order to block the gap s from the outside, the elastic lip portion 11 of the elastic seal member Se is formed to be longer upward and outward than that of the previous embodiment. However, the action and effect are exactly the same as those of the previous embodiment.

In each of the above embodiments, the base end portion 10 of the elastic seal member Se is at one end portion of the seal member of the present invention, and the tip end portion 11a of the elastic lip portion 11 of the elastic seal member Se is It corresponds to the other end of the seal member of the present invention. In each of the embodiments, the base end portion 10 of the elastic seal member Se is supported on the ventilation ducts D _f and D _r sides, but in the present invention, one end of the elastic seal member Se is disposed on the ventilation passages P _f and P _r sides. Alternatively, the other ends may be pressed against the outer circumferences of the tips of the ventilation ducts D _f and D _r . Further, in supporting one end of the elastic seal member Se, it is not always necessary to fix the elastic seal member Se to the mating member as in the above-mentioned embodiment, and for example, it may be slidably mounted to the mating member.

Further, in the above-mentioned embodiment, the ventilation structure of the battery storage box B in the electric vehicle V is shown. However, the ventilation structure of the present invention includes a motor of an electric vehicle, a PDU (power drive unit) and the like. It can also be applied to the ventilation structure of the storage box for various devices, and also to the ventilation structure of the storage box for various electric devices, which is so-called high-voltage equipment that uses high voltage, other than electric vehicles. is there.

[0024]

[Effect of device]

 As described above, according to the present invention, a box containing electric equipment is supported by a support having a ventilation passage, and the box has a ventilation duct for communicating the inside of the box with the ventilation passage. In the ventilation structure of the electrical equipment storage box in which the base part of is fixed, the tip end opening of the ventilation duct faces the ventilation passage opening of the support with a gap, and the elastic covering the gap. One end of the seal member is supported by either one of the ventilation duct and the support, and the other end of the seal member is elastically pressed against the other side to block the gap from the outside. The tip opening of the ventilation duct was specially fixed or tightened to the support side by supporting the member on either the ventilation duct or the support body and simply fixing the box with the ventilation duct to the support body. Without fail, it can always be accurately connected to the ventilation passage opening of the support through the elastic seal member, thus contributing to the improvement of the sealing property of the connection portion and the efficiency of the connection operation. In addition, the connection structure is simplified, the flexibility of the layout is expanded, and the cost is reduced.

Further, according to the second feature, since an air flow rate adjusting valve capable of opening and closing the air flow passage of the support is provided, the air flow amount into the box and the air pressure thereof are opened and closed by opening and closing the valve. The temperature of the inside of the box can be adjusted, and when the valve is closed, elastic deformation of the elastic seal member allows the excess air flowing in the box to escape. The pressure inside the box can be kept almost constant.

Further, according to the third feature, the support body is a vehicle body frame of an electric vehicle, and at least a part of a hollow portion of the vehicle body frame serves as the ventilation passage, so that the structure of the ventilation passage is that much. It is possible to simplify and reduce the number of parts.

[Brief description of drawings]

FIG. 1 is a side view of an electric vehicle showing a first embodiment of the present invention with a part broken away.

2 is a partially cutaway enlarged plan view of a floor panel omitted from the arrow 2 in FIG.

FIG. 3 is a partially cutaway side view taken along line 3-3 of FIG.

FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG.

5 is a sectional view similar to FIG. 4, showing a second embodiment of the present invention.

[Explanation of symbols]

B Battery Box as Storage Box for Electric Equipment Ba Battery as Electric Equipment F Body Frame as Support Se Elastic Seal Member s Gap V Valve 1 Mounting Bracket 8 and 9 Opening of Ventilation Path 10 Base End as One End 11a Tip portion of elastic lip portion as the other end portion 13 and 14 Tip opening portion of ventilation duct

Claims (3)

[Scope of utility model registration request] 1. A ventilation path (P_f, P_r) Supports with
Box (B) containing electrical equipment (Ba) in (F)
The box (B) in the box (B)
And the ventilation path (P_f, P_r) For communication with
Ventilation duct (D _f, D_r) Electricity
In the ventilation structure of the equipment storage box, the ventilation duct
To (D_f, D_r) The tip opening (13, 14)
There is a gap (s) in the ventilation passage opening (8, 9) of the holding body (F).
The elastic seal member (S) that covers the gap (s).
e) one end (10) of the ventilation duct (D_f, D_r)
And one of the support (F) and others
The other end (11a) of the seal member (Se) toward
The gap (s) from the outside by being pressed against
The ventilation structure of the electrical equipment storage box. 2. The electric device according to claim 1, wherein at least a part of the ventilation passage (P _r ) is provided with an air volume adjusting valve (V) capable of opening and closing the ventilation passage (P _r ). Ventilation structure of the storage box. 3. The support body is a vehicle body frame (F) of an electric vehicle, and at least a part of a hollow portion of the vehicle body frame (F) is the ventilation passages (P _f , P _r ). The ventilation structure for the electrical equipment storage box according to claim 1 or 2.