JP2006040645A - Power supply device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply apparatus for vehicles whose case is manufactured in divided way and whose assembling is carried out effectively and easily, at the same time preventing effectively the divided parts of connection parts of the case from being separated for a long period. <P>SOLUTION: The power supply apparatus for vehicles comprises a plastic box 3 formed by jointing a first box 3A and a second box 3B, and in the plastic box 3, an interlocking projection strip 11 of the second box 3B is inserted into an interlocking slot 10 of the first box 3A and a adhesive compound 13 is filled into the gap between the interlocking slot 10 and the interlocking projection strip 11, and further an interlocking part 12 is inserted into the gap between the interlocking slot 10 and the interlocking projection strip 11, wherein the interlocking part 12 has outer engaging projection 12A for engaging with the interlocking slot 10 and inner engaging projection 12B for engaging with the interlocking projection strip 11. In the plastic box 3, the interlocking projection strip 11 is joined with the interlocking slot 10 through the interlocking part 12 and the first box 3A and the second box 3B are coupled with each other by bonding the interlocking projection strip 11 to the interlocking slot 10, using the adhesive compound 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a power supply device that drives a motor that is mounted on an automobile and runs the automobile.

  An automobile such as an electric vehicle that runs on a motor or a hybrid car that runs on both a motor and an engine is equipped with a power supply device that houses a battery in a case. In this power supply device, since the motor vehicle is driven by a motor, in order to increase the output, a large number of batteries are connected in series to increase the output voltage. For example, the voltage of a battery for electrical equipment mounted on an automobile is almost 12V with no exceptions, but the output voltage of a power supply device that drives a motor for traveling is generally an extremely high voltage of 200V or more.

A hybrid car currently on the market has a motor output of several tens of kW and a power supply device output voltage of 200 to 300V. Since the power supply device is designed to withstand such a large output, if it is damaged due to a car crash or the like and is short-circuited inside, an extremely large current flows to cause a vehicle fire or the like. In order to prevent such an adverse effect, a power supply device that controls a state of being destroyed when a crash occurs has been developed (see Patent Document 1).
JP 2003-45392 A

  In the power supply device described in this publication, the case is divided into a front battery housing part and a rear shock absorbing part. When the rear impact is made from behind, the impact absorbing portion is pushed under the front battery storage portion so that the crash occurs while absorbing the impact. That is, the impact absorbing portion is pushed under the battery housing portion, and the battery housing portion is tilted in the vertical direction from the horizontal posture to cause a crash while ensuring safety.

  As described above, the power supply device has a structure in which the power supply device is divided into a plurality of crashes, and can improve safety while absorbing an impact. However, in order to achieve this, it is necessary to divide the case into a plurality of parts so as to be surely divided in the event of a crash. Cases divided into a plurality of parts are bonded and connected, and a structure that separates them in the event of a crash is required. However, the case divided into a plurality of cases has a drawback that it takes time to bond and cannot be efficiently mass-produced. This is because the connecting portion needs to be held in a predetermined posture until the adhesive is cured. In addition, the case where they are bonded and connected also has a drawback that they easily come off due to deterioration of the adhesive over time. In particular, since the power supply device for a vehicle is used in a state where it receives vibrations, there is a drawback that it easily comes off when the adhesive deteriorates. Further, in the structure where the adhesive is connected to the waterproof structure, the connecting agent is deteriorated, the waterproofness is lowered, and there is a problem that water enters the case.

  The present invention has been developed for the purpose of solving such drawbacks. An important object of the present invention is for a vehicle that can bond and connect divided and manufactured cases very simply and easily and efficiently, and can effectively prevent the case from being disconnected for a long period of time. It is to provide a power supply device.

  In the power supply device for a vehicle according to the present invention, a case 1 containing a battery is provided with a first box 3A and a second box 3B made of plastic that are divided and molded, and the first box 3A and the second box 3B are provided. Two boxes 3B are connected to each other to form a plastic box 3. The first box 3A is provided with a connecting groove 10 at the connecting portion with the second box 3B. The second box 3B is provided with a connecting ridge 11 to be inserted into the connecting groove 10 at the connecting portion with the first box 3A. The plastic box 3 puts the connecting ridge 11 into the connecting groove 10 and fills the gap between the inner surface of the connecting groove 10 and the surface of the connecting ridge 11 with the adhesive 13, so that the first box 3A and the second box 3 Box 3B is connected. Further, a coupling tool 12 formed into a groove shape is inserted into the gap between the coupling groove 10 and the coupling protrusion 11. The connector 12 is not locked in the insertion direction to the connection groove 10, and the outer locking protrusion 12 </ b> A is locked elastically so as not to come out on the inner surface of the connection groove 10 in the pulling direction from the connection groove 10. It protrudes outward. Furthermore, the connecting tool 12 is not locked in the insertion direction of the connecting ridge 11, and has an inner locking protrusion 12 </ b> B that is locked so as not to come out on the outer surface of the connecting ridge 11 in the pulling direction of the connecting ridge 11. It protrudes inward elastically. In the plastic box 3, the connecting ridge 11 is inserted into the connecting groove 10 in a state where the connecting ridge 11 is connected to the connecting groove 10 via the connector 12, and the connecting ridge 11 is connected to the connecting groove 10 with an adhesive 13. The first box 3A and the second box 3B are connected by bonding.

  In the power supply device for a vehicle of the present invention, the connector 12 is a U-shaped metal plate, and a part of the metal plate can be cut and bent to provide the outer locking protrusion 12A and the inner locking protrusion 12B. .

  The power supply device for a vehicle of the present invention can open the connecting groove 10 downward and project the connecting protrusion 11 upward.

  In the power supply device for a vehicle according to the present invention, the case 1 includes a battery housing portion 6 and an impact absorbing portion 7 located behind the battery housing portion 6, and the first box 3 </ b> A is attached to the battery housing portion 6. It is possible to dispose the second box 3B on the shock absorber 7.

  The power supply device for a vehicle of the present invention includes a holder case 5 that stores a battery, and the holder case 5 that stores the battery can be fixed to the first box 3A. Furthermore, in the power supply device for a vehicle of the present invention, the blower 8 for cooling the battery can be disposed in the second box 3B of the impact absorbing portion 7.

  Furthermore, the power supply device for a vehicle according to the present invention allows the case 1 to be connected to the battery so that, when an impact is applied to the case 1, the impact absorbing portion 7 moves below the battery housing portion 6 and moves relatively in the overlapping direction. The storage unit 6 and the shock absorbing unit 7 can be divided.

  The power supply device for a vehicle according to the present invention securely and easily bonds the first box and the second box, which are plastic cases manufactured by dividing into a plurality of parts, simply and easily in a short time. There is a feature that can be connected. That is, the case of the power supply device of the present invention is connected to both the adhesive and the connecting tool by inserting the connecting protrusion of the second box into the connecting groove of the first box, and the connecting tool includes the connecting groove. This is because the outer locking protrusions that are locked to the inner surface are provided on the outer side, and the inner locking protrusions that are locked to the surface of the connecting protrusion are provided so as to protrude from the inner surface. The case of this structure can be reliably connected by putting an adhesive and a connecting tool in the connecting groove of the first box and putting the connecting protrusion of the second box in the connecting groove. The connecting tool connects the connecting ridges so as not to come out of the connecting groove. In this connected state, the adhesive is cured to connect the connecting groove and the connecting ridge. That is, since the outer locking projection and the inner locking projection of the coupler hold the coupling groove and the coupling protrusion, the first box and the second box are held in a predetermined position until the adhesive is cured. There is no need to hold the connecting protrusions, and connecting protrusions can be inserted into the connecting grooves filled with the adhesive. Thereafter, when the adhesive is cured, the first box and the second box are firmly connected by both the adhesive and the connector.

  As described above, in the case where the first box and the second box are connected by both the adhesive and the connecting tool, even if the adhesive deteriorates with time and the adhesive force decreases, the connecting tool does not Since the 1st box and the 2nd box are connected, it can prevent effectively that a connection part removes for a long period of time. If the connecting groove and the connecting protrusion move relatively in a state where the adhesive deteriorates, the adhesive peels off and the connecting force due to the adhesive force is lost. However, since the power supply device of the present invention physically connects the connecting groove and the connecting protrusion with the connecting tool, the connecting tool prevents the relative movement of the connecting groove and the connecting protrusion. For this reason, even if adhesive force falls, an adhesive material does not peel, but a 1st box and a 2nd box are connected with both adhesive force and a connection tool. For this reason, even if years pass, the connection part of a 1st box and a 2nd box does not remove | deviate, but the bad effect that a part of case opens and water permeates can also be prevented.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify a power supply device for embodying the technical idea of the present invention, and the present invention does not specify the power supply device as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The vehicle shown in FIG. 1 has a power supply device mounted on a floor 30. The power supply device mounted on the floor 30 of the vehicle is, for example, on the cargo bed 32 provided behind the rear seat as shown by the solid line in FIG. 1 or between the rear seat and the front seat as shown by the chain line. Mounted on the floor 30. The power supply device can use the cover plate 4 that is mounted on the upper surface of the case 1 so as to be flush with the floor panel 31 of the vehicle and is fixed to the upper surface of the case 1 as a part of the floor panel 31 of the vehicle. In this case 1, the cover plate 4 is a metal plate that realizes the load resistance of the floor panel 31. The power supply device in which the cover plate 4 has a load resistance corresponding to the load of the loading platform 32 does not need to reinforce the cover plate 4 with a load-bearing floor having a strength comparable to the floor panel 31. In this power supply device, a recess or an opening is provided in the floor panel 31, and the power supply device is mounted in the recess or the opening so that the upper surface thereof can be a load-bearing floor comparable to the floor panel 31.

  The power supply device mounted on the floor 30 of the vehicle is crashed by being rear-end collision from behind. At this time, the case 1 can be divided into a plurality of blocks to improve safety. Not only the power supply device mounted on the floor 30 but all power supply devices mounted on the vehicle can improve safety by causing the case 1 to crash into a plurality of blocks.

  Hereinafter, a specific example of the power supply device that is mounted on the floor 30 of the vehicle and divided forward and backward in the event of a crash will be described. However, the power supply device for a vehicle according to the present invention is not necessarily divided as shown below. This is because the state that is optimally divided at the time of a crash differs depending on the posture and position mounted on the vehicle.

  FIG. 2 is a cross-sectional view of the power supply device cut in the longitudinal direction of the vehicle. FIG. 3 shows a perspective view with the cover plate 4 of the upper lid of the power supply device removed, and FIG. 4 shows a perspective view with the cover plate 4 closed. As shown in these drawings, the power supply device includes a case 1, a battery, a blower 8 that cools the battery, and a control circuit (not shown) that controls charging / discharging of the battery. The case 1 includes a metal base plate 2 shown in FIG. 5 that is fixed to a vehicle chassis and a floor panel, a plastic box 3 shown in FIG. 6 that is fixed on the base plate 2, and a plastic box 3. The metal cover plate 4 shown in FIG. 7 is fixed so as to close the upper opening.

  The plastic box 3 in FIG. 5 is divided into a first box 3A and a second box 3B and is molded of plastic. The first box 3A and the second box 3B are connected at the boundary to form one plastic box 3.

  Further, in the power supply device of FIG. 3, the case 1 is divided into a battery housing portion 6 and an impact absorbing portion 7 disposed behind the battery housing portion 6. A battery is housed in the battery housing 6, and a blower 8 that cools the battery is housed in the shock absorber 7.

  The case 1 is mounted on the vehicle in a posture in which the battery storage unit 6 is positioned in front of the vehicle with respect to the shock absorption unit 7, in other words, in a posture in which the shock absorption unit 7 is behind the battery storage unit 6. The battery storage unit 6 located in the front stores a plurality of battery modules (not shown) via the holder case 5. The plurality of battery modules are stored in the holder case 5, and the holder case 5 is disposed in the battery storage unit 6. The shock absorber 7 located behind the case 1 houses a blower 8 that forcibly cools the battery module of the holder case 5. The blower 8 is connected to the holder case 5 and forcibly blows cooling air to the holder case 5 to cool the battery module.

  Further, the case 1 of the power supply device is divided into a battery housing 6 in the front, a base plate 2, a plastic box 3 and a cover plate 4 constituting the case 1 in order to be divided into a battery housing 6 in the front and a shock absorber 7 in the rear. It is divided and connected in the front and rear at the boundary portion of the shock absorbing portion 7. The case 1 is divided into the front and the rear in order to crash safely by pushing the impact absorbing portion 7 under the battery housing portion 6 in the case of a rear-end collision.

  FIG. 5 shows a perspective view of the base plate 2 separated front and rear. The base plate 2 is divided into a front base plate 2A in front of the boundary portion and a rear base plate 2B in the rear. The front base plate 2A and the rear base plate 2B are connected to each other by a cutting pin 9 that is broken by the impact of a collision. Further, the front base plate 2A is provided with an inclined surface 2a which is inclined upward at the rear end portion, and the rear base plate 2B is provided with an inclined surface 2b along the lower surface of the inclined surface 2a. The front base plate 2 </ b> A and the rear base plate 2 </ b> B are connected by cutting pins 9 by laminating inclined surfaces 2 a and 2 b. When the base plate 2 having this structure is bumped and the cutting pin 9 is cut, the rear base plate 2B is pushed forward while sliding on the inclined surfaces 2a and 2b. When the rear base plate 2B moves forward, the inclined surfaces 2a and 2b slide and slide under the front base plate 2A to push up the rear end of the front base plate 2A. For this reason, the front base plate 2A tilts in the vertical direction, and the rear base plate 2B slides under the front base plate 2A and crashes safely.

  FIG. 6 shows a perspective view of the plastic box 3 separated front and rear. The plastic box 3 is divided into a first box 3A that is the front of the boundary portion and serves as the battery housing portion 6, and a second box 3B that is the rear and serves as the shock absorbing portion 7, and molds the plastic. Are making. The plastic box 3 separated into the first box 3A and the second box 3B and molded separately is separated forward and backward by the impact of the collision. The separated second box 3B moves forward together with the rear base plate 2B, and the first box 3A tilts together with the front base plate 2A.

  The first box 3 </ b> A and the second box 3 </ b> B are connected at a boundary and fixed on the base plate 2 as one plastic box 3. A connecting portion between the first box 3A and the second box 3B is shown in FIGS. The plastic box 3 shown in these drawings is provided with a connecting groove 10 along a connecting portion between the first box 3A and the second box 3B. The 2nd box 3B is provided with the connection protruding item | line 11 inserted in the connection groove | channel 10 along the connection part with the 1st box 3A. The connecting groove 10 is opened downward, and the connecting ridge 11 is provided so as to protrude upward. In this structure, water does not enter the connecting groove 10.

  The connecting ridge 11 is inserted into the connecting groove 10, and the first box 3 </ b> A and the second box 3 </ b> B are connected at the boundary to form one plastic box 3. The connecting groove 10 and the connecting ridge 11 are connected by the connecting tool 12 and the adhesive 13 filled in the gap between the inner surface of the connecting groove 10 and the surface of the connecting ridge 11. The first box 3 </ b> A and the second box 3 </ b> B are provided with a connection groove 10 and a connection protrusion 11 continuously from the boundary. The adhesive 13 is filled between the connection groove 10 and the connection protrusion 11, and the boundary between the first box 3A and the second box 3B is continuously connected and fixed by a watertight structure.

  The connection groove 10 and the connection protrusion 11 provide a gap into which the connection tool 12 can be put. The connector 12 is formed into a groove shape that can be inserted into the gap between the connection groove 10 and the connection protrusion 11. The connector 12 having this shape is manufactured by pressing a metal plate such as iron that is elastically deformed. A perspective view of the connector 12 is shown in FIG. 11, and the locked state is shown in an enlarged sectional view of FIG. The connector 12 is provided with an outer locking projection 12A that is inserted into the connection groove 10 and fixed to the first box 3A so as to protrude elastically outward. The outer locking projections 12A are provided so as to protrude on both sides in the vicinity of the U-curved portion. The outer locking projections 12A are not locked in the insertion direction to the connecting groove 10 and are bitten and locked in the pulling direction from the connecting groove 10 so as not to come out from the inner surface of the connecting groove 10. Therefore, the outer locking protrusion 12A has a sharp tip. Further, the outer locking projection 12A can be moved by sliding on the inner surface of the coupling groove 10 only in the insertion direction, and is in the direction opposite to the insertion direction into the coupling groove 10, which is downward in FIGS. 10 and 11. It inclines so that it may protrude gradually toward.

  Further, the connector 12 is provided with an inner locking projection 12B that elastically protrudes inward to insert the connecting protrusion 11 and fix the second box 3B. The inner locking projections 12B are provided so as to protrude inward while facing each other in the vicinity of the opening of the groove. The inner locking protrusions 12B are not locked to the connecting ridges 11 in the insertion direction of the connecting ridges 11, and are bitten and locked so as not to come out on the surface of the connecting ridges 11 in the pulling direction of the connecting ridges 11. . Therefore, the inner locking projection 12B has a sharp tip, and a slipping direction that is opposite to the insertion direction of the connecting ridges 11 so as to be able to slide and move on the surface of the connecting ridges 11 only in the insertion direction. 10 and FIG. 11 are inclined so as to gradually protrude inwardly upward.

The first box 3A and the second box 3B are connected as follows to form one plastic box 3.
(1) Fill the connecting groove 10 with the adhesive 13. The adhesive 13 is filled in the connecting groove 10 in the form of an uncured paste.
(2) Insert the coupler 12 into the coupling groove 10 with the adhesive 13 uncured. The connecting tool 12 is inserted into the connecting groove 10 by sliding the outer locking projection 12 </ b> A on the inner surface of the connecting groove 10. A long connecting groove 10 provided along the boundary inserts a plurality of connecting tools 12 at a predetermined interval. For example, the coupling tool 12 is inserted into the long coupling groove 10 at both ends and in the middle. The coupling tool 12 put in the coupling groove 10 is fixed to the coupling groove 10 so that the outer locking projection 12A is elastically pressed against the inner surface of the coupling groove 10 so as not to come off.
(3) Insert the connecting ridge 11 into the connecting groove 10. At this time, the connecting ridge 11 is also inserted inside the groove-shaped connector 12. The connecting ridge 11 inserted into the connecting tool 12 is inserted by sliding the surface on the inner locking protrusion 12B. The connecting ridge 11 inserted inside is locked to the inner locking protrusion 12B of the connector 12 and fixed so as not to come off.
When a force for pulling out the connecting ridge 11 from the connecting groove 10 is applied in the above state, the outer locking protrusion 12A is bitten into the inner surface of the connecting groove 10 and the inner locking protrusion 12B is caught into the surface of the connecting ridge 11 and locked. The For this reason, even when the adhesive 13 is in an uncured state, the connecting protrusions 11 are connected to the connecting groove 10 so as not to come off.
(4) The adhesive 13 is cured, the connecting ridges 11 are connected to the connecting grooves 10 by the adhesive 13 and the connecting tool 12, and the first box 3A and the second box 3B are one plastic box 3 It becomes.

  A perspective view of the cover plate 4 separated front and rear is shown in FIG. The cover plate 4 is divided into a front cover plate 4A that is in front of the boundary portion and covers the upper surface of the battery housing portion 6, and a rear cover plate 4B that is in the rear and covers the upper surface of the shock absorbing portion 7. The front cover plate 4A and the rear cover plate 4B are made of a metal plate having an excellent load resistance. The cover plate 4 is preferably made of an aluminum alloy. The aluminum alloy cover plate 4 can be light and strong. In particular, an aluminum alloy that can be quenched is suitable. The cover plate 4 is formed by press-molding an aluminum plate and then quenched to further improve the strength.

  The front cover plate 4A is a single metal plate, and the rear cover plate 4B is a laminated metal plate in which a plurality of metal plates are laminated and fixed. The rear cover plate 4B has a higher bending strength than the front cover plate 4A as a laminated metal plate. The rear cover plate 4B having a high bending strength can be made an excellent load bearing floor with less support from the lower surface. For this reason, the support part provided in the impact-absorbing part 7 covered with the back cover plate 4B can be decreased.

  The rear cover plate 4B is a laminated metal plate in which two aluminum alloy plates are laminated and fixed. The rear cover plate can be manufactured by laminating and fixing three or more metal plates. The rear cover plate 4B made of a laminated metal plate is manufactured by adhering the laminated metal plates over the entire surface or a part thereof and further spot welding locally. A laminated metal plate that is partially bonded with an adhesive has an adhesion area of 50% or more of the total lamination area in order to obtain sufficient strength. This laminated metal plate is coated with an adhesive such as an epoxy that can firmly bond the metal plate to the entire surface or a part of the metal plate, and the electrodes are welded from both sides with the adhesive remaining uncured. It is fixed by spot welding in a state where the metal plates are brought into contact with each other. In this structure, since the adhesive can be cured in a state of being fixed by spot welding, it is not necessary to wait for the adhesive to be cured, and the stacked metal plates can be efficiently fixed. The rear cover plate 4B made of the laminated metal plate having this structure can have a very strong structure. In particular, a laminated metal plate manufactured by stacking two aluminum alloys is light and can withstand a large load. In addition, the laminated metal plate with this structure does not press-mold thick metal plates, but forms and laminates each metal plate separately, so it can be easily and easily press-formed into an ideal shape efficiently. There is a feature that can be fixed. Furthermore, the laminated metal plate having this structure has a three-layer structure in which an adhesive is sandwiched between the metal plates. When an adhesive that is hardened in a cured state, such as an epoxy adhesive, is used, a structure in which a strong adhesive layer is sandwiched between metal plates on both sides is obtained. The adhesive layer has a smaller specific gravity and lighter than the metal plate. For this reason, the sandwich structure is a structure in which both sides of a light and hard layer are sandwiched between metal plates. The laminated metal plate having this structure can be lightened while increasing the bending strength by making the whole thick. This is because both sides having a large influence on the bending strength are made of tough metal plates, and the intermediate layer for thickening is made of a light adhesive layer.

  However, the laminated metal plate of the rear cover plate can be manufactured by adhering laminated metal plates, spot welding, or fixing by screwing, or combining them.

  The battery is placed in the plastic case 3 in a holder case 5. As shown in the cross-sectional view of FIG. 12, the holder case 5 stores batteries as battery modules 21 side by side in a horizontal plane. The holder case 5 shown in the figure has battery modules 21 arranged in two upper and lower stages. The battery module 21 is connected in a straight line by connecting a plurality of secondary batteries 20 in series. The battery module 21 includes 4 to 8, for example, 5 or 6 secondary batteries 20 connected in series and connected in a straight line. However, a battery module can also be comprised with one secondary battery. The battery module 21 has a cylindrical or prismatic secondary battery 20 connected in a straight line by directly connecting battery end faces in series via a metal plate connector or without a connector. At both ends of the battery module 21, an electrode terminal composed of a positive terminal and a negative terminal is connected. The electrode terminal screws a metal bar bus bar (not shown) to connect adjacent battery modules 21 in series or in parallel.

  The secondary battery 20 of the battery module 1 is a nickel-hydrogen battery. However, as the secondary battery of the battery module, a nickel-cadmium battery, a lithium ion secondary battery, or the like can be used.

  The holder case 5 has an opening (not shown) for supplying air for cooling the battery module 21. This blower opening is connected to a blower 8 disposed in the impact absorbing portion 7. The blower 8 forcibly blows cooling air to the holder case 5 to cool the battery. The holder case 5 is fixed to the battery housing part 6 of the case 1. The front base plate 2 </ b> A is fixed to the upper surface of the holder case 5 via a set screw 14.

  When the power supply device having the above structure crashes from the rear, as shown in FIG. 13, the power supply device is separated into a battery housing portion 6 and an impact absorbing portion 7. At this time, the plastic box 3 is connected to the connecting portion of the first box 3A and the second box 3B, that is, at the boundary where the connecting protrusion 11 is inserted into the connecting groove 10 and connected with the adhesive 13 and the connecting tool 12. To be separated. The shock absorbing part 7 separated from the battery housing part 6 moves so as to be pushed under the battery housing part 6, and the battery housing part 6 tilts in the vertical direction from the horizontal posture. The first box 3A and the second box 3B are separated by a portion that is separately molded and connected.

It is the schematic which shows the state which mounts the power supply device for vehicles concerning one Example of this invention in a vehicle. It is sectional drawing which cut | disconnected the power supply device for vehicles concerning one Example of this invention in the front-back direction of the vehicle. It is a disassembled perspective view of the power supply device shown in FIG. It is a perspective view of the power supply device shown in FIG. It is a disassembled perspective view of a base plate. It is a disassembled perspective view of a plastic box. It is a disassembled perspective view of a cover plate. It is sectional drawing which shows the connection part of a 1st box and a 2nd box. It is an expanded sectional view of the connection part shown in FIG. It is an expanded sectional view which shows the connection structure of a connector. It is an expansion perspective view of a coupling tool. It is an expanded sectional view of a holder case. FIG. 3 is a cross-sectional view illustrating a state in which the power supply device illustrated in FIG. 2 is separated into a battery storage unit and an impact absorption unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Case 2 ... Base plate 2A ... Front base plate 2a ... Inclined surface
2B ... Rear base plate 2b ... Inclined surface 3 ... Plastic box 3A ... First box
3B ... Second box 4 ... Cover plate 4A ... Front cover plate
4B ... Rear cover plate 5 ... Holder case 6 ... Battery storage part 7 ... Shock absorbing part 8 ... Blower 9 ... Cut pin 10 ... Connecting groove 11 ... Connecting protrusion 12 ... Connecting tool 12A ... Outer locking projection
12B ... Inner locking projection 13 ... Adhesive 14 ... Set screw 20 ... Secondary battery 21 ... Battery module 30 ... Floor 31 ... Floor panel 32 ... Loading platform

Claims (7)

The case (1) containing the battery is provided with a first box (3A) and a second box (3B) made of plastic, which are divided and molded, and the first box (3A) and the second box (3B). Box (3B) is connected to each other to make a plastic box (3),
The first box (3A) is provided with a connecting groove (10) in the connecting portion with the second box (3B).
The second box (3B) is provided with a connecting ridge (11) to be inserted into the connecting groove (10) at the connecting portion with the first box (3A).
The connecting ridge (11) is put in the connecting groove (10), and the gap between the inner surface of the connecting groove (10) and the surface of the connecting ridge (11) is filled with the adhesive (13), and the first box (3A) and the second box (3B) are connected,
Furthermore, a coupling tool (12) molded into a groove shape is inserted in the gap between the coupling groove (10) and the coupling protrusion (11),
This coupling tool (12) is not locked in the insertion direction to the coupling groove (10), but is locked outside so as not to come out on the inner surface of the coupling groove (10) in the pulling direction from the coupling groove (10). The locking projection (12A) is elastically projected outward, and is not locked in the insertion direction of the connecting ridge (11), but in the pulling direction of the connecting ridge (11). Provided with an inner locking projection (12B) that is locked so as not to come out on the outer surface, elastically protruding inward,
The connecting ridge (11) is inserted into the connecting groove (10) in a state where the connecting ridge (11) is connected to the connecting groove (10) through this connecting tool (12), and is connected with an adhesive (13). A power supply device for a vehicle in which the first strip (3A) and the second box (3B) are coupled by bonding the protrusion (11) to the coupling groove (10).   The connector (12) is a U-shaped metal plate, and a part of the metal plate is cut and bent to provide an outer locking projection (12A) and an inner locking projection (12B). The vehicle power supply described.   The power supply device for a vehicle according to claim 1, wherein the connecting groove (10) opens downward and the connecting protrusion (11) protrudes upward.   The case (1) is composed of a battery housing part (6) and an impact absorbing part (7) located at the rear of the battery housing part (6), and the first box (3A) is constituted by the battery housing part ( The power supply device for vehicles according to claim 1, wherein the second box (3B) is disposed in the shock absorbing portion (7).   The vehicle power supply device according to claim 4, further comprising a holder case (5) for storing a battery, wherein the holder case (5) for storing the battery is fixed to the first box (3A).   The power supply device for vehicles described in Claim 4 which has arrange | positioned the air blower (8) which cools a battery in the 2nd box (3B) of an impact-absorbing part (7). When an impact is applied to the case (1), the case (1) is moved to the battery storage part (6) so that the shock absorbing part (7) moves below the battery storage part (6) and moves in the overlapping direction. ) And the shock absorbing part (7).

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