JP2003100273A - Power supply - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply which can suppress runup of costs. SOLUTION: This power supply 1 has a battery assembly and a battery holding part. The battery assembly has a plurality of batteries 4. A battery 4 has a gas release hole 10 penetrating an outer wall 8. The battery holding part has a holding plate 9, a seal member 14 and a pressurizing member 15. The holding plate 9 has a through-hole 20 overlapping with the gas release hole 10. The seal member 14 is mounted on the holding plate 9. The seal member 14 monolithically has a body 30 of the member and a seal projection 31. The body 30 of the member has a hole 34 overlapping with the through-hole 20. The seal projection 31 is annularly formed and surrounds the hole 34. The seal projection 31 penetrates into the through-hole 20. The pressurizing member 15 pushes the seal member 14 toward the holding plate 9 and is mounted on the holding plate 9. The seal projection 31 hermetically contacts with the outer edge of the gas release hole 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device which is obtained by connecting a plurality of batteries in series and which is mounted on a hybrid vehicle or an electric vehicle which can be driven by the power of both an internal combustion engine and an electric motor.

[0002]

2. Description of the Related Art A power supply device is mounted on a hybrid vehicle, an electric vehicle, or the like, which can be driven by the power of both an internal combustion engine and an electric motor. The power supply device includes a plurality of batteries and a holding member 1.
00 (shown in FIG. 9).

Each battery has a positive electrode (hereinafter referred to as a positive electrode) at one end and a negative electrode (hereinafter referred to as a negative electrode) at the other end.
Is provided. Further, the battery is provided with gas escape holes for discharging the gas generated during charging and discharging to the outside. The batteries are stacked with the positive electrode and the negative electrode adjacent to each other.

The holding member 100 is formed in a plate shape and is placed on the battery. When the holding member 100 is placed on the battery, the holding member 100 faces the gas escape hole. As shown in FIG. 9, the holding member 100 includes a plate-shaped member main body 10
1, a battery housing portion 102, and a gas discharge portion 103. The battery housing portion 102 includes a plurality of walls 104 protruding from the surface 101a of the member body 101 facing the battery. The battery housing portion 102 includes the walls 10 adjacent to each other.
The end of each battery is housed between the four.

The gas discharge part 103 is provided with a duct member 105.
And a plurality of sealing members 106. The duct member 105 is formed in a tubular shape. Duct member 10
5 is attached to the surface 101a of the member main body 101 in a state where the longitudinal direction is along the direction in which the batteries are arranged. The duct member 105 is provided with a plurality of gas passage holes 107 corresponding to the gas escape holes of each battery. The gas passage holes 107 face the corresponding gas escape holes.

Each of the seal members 106 is made of an elastically deformable synthetic resin such as rubber and is formed in a ring shape. The seal member 106 is attached to the outer edge of the gas passage hole 107. The seal member 106 has a gas passage hole 1
It is attached to the surface 101a of the member main body 101 in a form surrounding the 07, that is, a form in which the gas passage hole 107 is accommodated inside. When each battery is attached to the holding member 100, the seal member 106 comes into contact with the outer edge portion of the gas escape hole. The seal member 106 keeps the inside of the gas escape hole and the gas passage hole 107 airtight.

The power supply device having the above-described structure is provided with the holding member 10.
0, the duct member 105 is attached, and the duct member 105
After attaching the seal member 106 to the battery, each battery is housed in the battery housing portion 102 of the holding member 100. Then, the seal member 106 contacts the outer edge portion of the gas escape hole. The gas generated from each battery during charge and discharge does not leak from between the battery and the seal member 106 due to the seal member 106 and the like. Then, the gas is discharged through the gas escape hole, the inside of the seal member 106, and the gas passage hole 107.
Then, it is discharged to the outside of the power supply device through the inside of the duct member 105 and the like.

[0008]

When assembling the power supply device having the above-mentioned structure, it was necessary to attach the sealing members 106 to the duct member 105 one by one. For this reason, the labor and man-hours required for the assembly are increased, and the cost of the power supply device may be increased.

Therefore, an object of the present invention is to provide a power supply device capable of suppressing the cost increase.

[0010]

In order to solve the problems and achieve the object, a power supply device according to the present invention is a battery having a positive electrode at one end and a negative electrode at the other end. In a power supply device including a plurality of battery assemblies, a holding member attached to the battery assemblies, and a discharge path for discharging gas generated from each battery during charging and discharging, each of the batteries externally discharges the gas. A seal member integrally provided with a duct portion attached to the holding member and a ring-shaped seal portion provided corresponding to each gas escape hole of each battery. When the seal member is attached to the holding member and the holding member is attached to the battery assembly, the seal portion comes into contact with the outer edge portion of the gas escape hole of the corresponding battery, and the gas escape hole and the Inside of the duct portion with Lumpur portion is characterized in that is kept airtight.

According to a second aspect of the present invention, in the power source apparatus according to the first aspect, the holding member is provided corresponding to each of the seal portions, and the seal portion is passed inside. It is equipped with multiple through holes that allow
When the sealing member is attached to the holding member through the sealing portion through the through hole and the holding member to which the sealing member is attached is attached to the battery assembly, each sealing portion comes into contact with the outer edge portion of the gas escape hole. It is characterized by that.

According to a third aspect of the present invention, in the power source device according to the first or second aspect, the power supply device is detachable from the holding member and, when attached to the holding member, the seal is provided. It is characterized by comprising a pressing member for pressing the member toward the battery assembly.

According to a fourth aspect of the power source device of the present invention, in the power source device according to the third aspect, when attached to the holding member, the duct portion of the seal member and the pressing member come into contact with each other, The inside of these sealing member and the pressing member is kept airtight.

According to the first aspect of the present invention, the duct member and the seal portion are integrally formed on the seal member. When the sealing member is attached to the holding member and the battery assembly is attached to the holding member without attaching the sealing parts to the ducts one by one, it is possible to keep airtightness from the gas escape hole of the battery to the duct part. .

According to the second aspect of the present invention, since the seal portion can be passed through the through hole, when the seal member is attached to the holding member and the battery assembly is attached to the holding member, the battery It is possible to more reliably keep the airtightness from the gas escape hole to the duct portion.

According to the present invention described in claim 3, when the pressing member is attached to the holding member, the sealing member is pressed toward the battery assembly. Therefore, the seal portion of the seal member and the outer edge portion of the gas escape hole are more surely contacted in an airtight state.

According to the fourth aspect of the present invention, the duct member of the sealing member and the inside of the pressing member are kept airtight by attaching the pressing member and the sealing member to the holding member.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A power supply device according to a first embodiment of the present invention will be described with reference to FIGS. First
The power supply device 1 shown in FIG. 1 according to the embodiment is mounted on a hybrid vehicle that can be driven by the driving force of both the internal combustion engine and the electric motor, or an electric vehicle that can be driven by the driving force of the electric motor.

As shown in FIG. 1, the power supply device 1 includes a battery assembly 2 and a battery holding portion 3. The battery assembly 2 includes a plurality of batteries 4. The battery 4 includes a rectangular battery body 5, a positive electrode (hereinafter referred to as a positive electrode) 6, and a negative electrode (hereinafter referred to as a negative electrode) 7.

The positive electrode 6 is provided at one end of the battery body 5. The negative electrode 7 is provided on the other end of the battery body 5.
The positive electrode 6 and the negative electrode 7 are formed in a rod shape and project in the same direction from one outer wall (shown in FIG. 6) 8 of the battery body 5. The positive electrode 6 and the negative electrode 7 are parallel to each other and have thread grooves formed on the outer peripheral surface.

The plurality of batteries 4 are arranged along one direction (arrow H in FIG. 1) with the positive electrode 6 and the negative electrode 7 adjacent to each other and the outer walls 8 located on the same plane. There is. The batteries 4 adjacent to each other have a positive electrode 6 and a negative electrode 7.
And are next to each other. That is, the plurality of batteries 4 are stacked in a state where the positive electrodes 6 and the negative electrodes 7 are alternately reversed. The arrow H indicates the direction in which the batteries 4 are stacked.

Further, each battery 4 is provided with a gas escape hole 10 (shown in FIG. 6) penetrating the outer wall 8. The gas escape hole 10 is provided at the center of the positive electrode 6 and the negative electrode 7. The gas escape holes 10 are for discharging the gas generated from each battery 4 during charging and discharging (hereinafter referred to as charging / discharging) to the outside of the battery 4. Gas escape hole 10
Are arranged along the arrow H when the batteries 4 are stacked as described above.

The battery holding portion 3 includes a holding plate 9 as a holding member, a bus bar 22, a sealing member 14, and a pressing member 15.
And are equipped with. The holding plate 9 is made of an insulating synthetic resin and has a rectangular plate shape in a plan view. The holding plate 9 has electrode through holes 11 (FIG. 2) through which the positive electrodes 6 and the negative electrodes 7 of the batteries 4 arranged as described above can pass.
Through FIG. 5), a bus bar housing chamber 12 (shown in FIGS. 2 and 3 and the like), and a seal fixing portion 16 (shown in FIGS. 2 and 3 and the like).

The holding plate 9 is placed on the outer wall 8 of the battery 4 constituting the battery assembly 2 by passing the positive electrode 6 and the negative electrode 7 through the electrode through hole 11. In this way, the holding plate 9 is attached to the battery assembly 2. At this time, the longitudinal direction of the holding plate 9 becomes parallel to the arrow H. The bus bar accommodating room 12 is
A plurality of them are provided on the surface 9a exposed to the outside of the holding plate 9 when being stacked on the outer wall 8. Bus bar accommodation room 12
2 is formed by a plurality of partition walls 13 standing from the surface 9a, as shown in FIGS. An electrode through hole 11 for passing one positive electrode 6 is provided in the bus bar accommodating chamber 12.
And an electrode through hole 11 for passing one negative electrode 7 is opened. That is, the electrode through hole 11 is provided in the bus bar accommodating chamber 12.
Through, the positive electrode 6 and the negative electrode 7 of the batteries 4 adjacent to each other enter.

The bus bar accommodating chamber 12 has a positive electrode 6 (hereinafter referred to as reference numeral 6a) of one battery 4 (hereinafter referred to as reference numeral 4a) located at one end of the plurality of batteries 4 arranged along the one direction H.
And the other battery 4 located at the other end.
It is arranged at a position excluding the position where it overlaps with the negative electrode 7 (indicated by reference numeral 4b below) (indicated by reference numeral 7a below).

Further, as shown in FIGS. 2 and 3, each of the bus bar accommodating chambers 12 is provided with a plurality of locking claws 17 for fixing the bus bar 22. The locking claw 17 is a partition wall 1.
It protrudes from the inner surface of 3 toward the inside of the bus bar housing chamber 12. The locking claw 17 is locked to the outer edge of the bus bar 22,
The bus bar 22 is fixed in the bus bar accommodating chamber 12.

The seal fixing portion 16 is provided on the surface 9a of the holding plate 9.
It is provided in the center of the holding plate 9 in the width direction.
As shown in FIGS. 1 to 6, the seal fixing portion 16 includes a pair of partition walls 18 protruding from the surface 9a.
The partition wall 18 extends along the longitudinal direction of the holding plate 9.
The partition walls 18 are arranged at intervals along the width direction of the holding plate 9. The partition walls 18 are parallel to each other. A locking claw 19 is provided on each of the partition walls 18. The locking claws 19 project from the surface of each partition 18 in the direction in which the pair of partitions 18 approach each other. The locking claw 19 is locked to the outer edge of the pressing member 15 and the sealing member 1
4, the pressing member 15 and the holding plate 9 are fixed.

Further, the seal fixing portion 16 has a structure shown in FIGS.
Further, as shown in FIG. 6, a plurality of through holes 20 are provided. The through hole 20 is provided between the pair of partition walls 18. The through hole 20 penetrates the holding plate 9. Through hole 2
0s are arranged along the longitudinal direction of the holding plate 9. When the holding plate 9 is placed on the outer wall 8 of the battery 4 of the battery assembly 2, each through hole 20 overlaps with the gas escape hole 10.

The bus bar 22 is made of a conductive metal and is formed into a strip plate shape. The bus bar 22 has a pair of holes 25 through which the positive electrode 6 and the negative electrode 7 can pass.
The bus bar 22 includes a positive electrode 6 and a negative electrode 7 in each of the pair of holes 25.
And is accommodated in the bus bar accommodating chamber 12 through. The bus bar 22 is locked by the locking claw 17 provided on the inner surface of the partition wall 13 and fixed in the bus bar housing chamber 12.

The seal member 14 is made of elastic synthetic resin such as rubber. As shown in FIG. 2, FIG. 4, FIG. 6, etc., the seal member 14 is a member main body 3 as a duct part.
0 and a plurality of seal protrusions 31 are integrally provided. As shown in FIG. 1, FIG. 2, FIG. 4 and FIG. 6, the member main body 30 includes a bottom plate 32 having a rectangular planar shape and a plurality of peripheral walls 33.
And are formed in a box shape. The member body 30 is
It is attached to the holding plate 9. The length of the bottom plate 32 in the longitudinal direction is substantially equal to the length of the holding plate 9 in the longitudinal direction. The length of the bottom plate 32 in the width direction is substantially equal to the distance between the pair of partition walls 18.

As shown in FIGS. 1, 2, and 4 to 6, the bottom plate 32 is provided with a plurality of holes 34. Hole 34
Of course penetrates the bottom plate 32. When the seal member 14 is attached to the seal fixing portion 16, the hole 34 overlaps the through hole 20. That is, the gas escape hole 10, the through hole 20, and the hole 34 overlap and communicate with each other.

The seal protrusion 31 corresponds to the seal portion described in this specification. The seal projection 31 is erected from the bottom plate 32 in the opposite direction of the peripheral wall 33. Seal protrusion 31
Has a ring-shaped planar shape. Seal protrusion 31
Are provided corresponding to each of the holes 34. That is, one seal protrusion 31 is provided for each gas escape hole 10. Seal protrusion 3
1 is provided at the outer edge of the hole 34. The seal protrusion 31 surrounds the hole 34.

Further, the seal protrusion 31 can enter the through hole 20. When the seal projection 31 enters the through hole 20, as shown in FIG. 6, the seal projection 31 comes into contact with the outer wall 8 located at the outer edge portion of the gas escape hole 10. The seal projection 31 keeps the space between the seal projection 31 and the outer wall 8 airtight. When the seal protrusion 31 contacts the outer wall 8, the seal protrusion 31 surrounds the gas escape hole 10. Thus
In the present specification, the seal projection 31 is in contact with the outer wall 8 located at the outer edge of the gas escape hole 10.
1 contacts the outer edge of the gas escape hole 10. For this reason, the seal projection 31 comes into contact with the outer edge portion of the gas escape hole 10 in an airtight state.

The peripheral wall 33 is continuous with the outer edge of the bottom plate 32 and stands upright with respect to the bottom plate 32. Further, among the plurality of peripheral walls 33 of the seal member 14, the peripheral wall 33 located on the front side in FIG. 1 is provided with a pipe 35 as shown in FIGS. 1 to 5. The pipe 35 communicates the inside and outside of the member body 30 of the seal member 14.

The pressing member 15 is removable from the holding plate 9. The pressing member 15 is formed in a rectangular plate shape in a plan view. The length of the pressing member 15 in the longitudinal direction is determined by the holding plate 9
Is approximately equal to the length in the longitudinal direction. The length of the pressing member 15 in the width direction is substantially equal to the distance between the pair of partition walls 18.

The pressing member 15 is inserted between the pair of partition walls 18 with the seal member 14 inserted between the pair of partition walls 18 of the seal fixing portion 16. Then, the pressing member 15 presses the sealing member 14 toward the holding plate 9, that is, the battery assembly 2. Furthermore, on the outer edge of the pressing member 15,
The locking claw 19 described above is locked. Then, the seal member 1
An airtight state is maintained between the pressing member 15 and the edge portion 33a (shown in FIG. 6) of the peripheral wall 33 of the No. 4 which is separated from the bottom plate 32.

The gas escape hole 10, the seal member 14, and the pressing member 15 described above constitute the gas discharge passage 36 described in this specification. The discharge path 36 is
It is for discharging the gas to the outside of the power supply device 1.

When assembling the power supply device 1 having the above-described structure, first, the plurality of batteries 4 are stacked so that the positive electrode 6 and the negative electrode 7 are adjacent to each other. Then, the positive electrode 6 and the negative electrode 7 are inserted into the electrode through holes 11 and the holding plate 9 is placed on the outer wall 8 of the battery 4.

The positive electrode 6 and the negative electrode 7 adjacent to each other in the hole 25.
The bus bar 22 that has passed through is inserted into the bus bar housing chamber 12. The locking claw 17 is locked to the bus bar 22 so that the bus bar 2
2 is fixed in the bus bar accommodating chamber 12. Then, each positive electrode 6
A nut 26 or the like is screwed into the outer periphery of the negative electrode 7 to fix the battery 4, the holding plate 9 and the bus bar 22.

Thereafter, the seal projection 31 is passed through the through hole 20 and the seal member 14 is inserted between the pair of partition walls 18. Then, the pressing member 15 is inserted between the pair of partition walls 18. The locking claw 19 is locked to the outer edge of the pressing member 15. The seal projection 31 contacts the outer edge portion of the gas escape hole 10 in an airtight state, and the peripheral wall 33 of the member body 30 contacts the pressing member 15 in an airtight state. Thus, the discharge path 36
That is, the gas escape hole 10, the seal projection 31, the member main body 30
The inner side of the pressing member 15 is kept airtight, and the power supply device 1 having the above-described configuration is assembled.

The power supply device 1 thus assembled is
Positive electrode 6 of one battery 4a located at one end in the one direction H
Except for a and the negative electrode 7a of the other battery 4b located at the other end in the one direction H, the positive electrode 6 and the negative electrode 7 adjacent to each other are electrically connected by the bus bar 22. Then, the batteries 4 are electrically connected to each other in series.

According to this embodiment, the seal member 14 is
The member main body 30 and the seal protrusion 31 are integrally formed. The seal member 14 is attached to the holding plate 9 without attaching the seal protrusions 31 to the member body 30 one by one,
When the battery assembly 2 is attached to the holding plate 9, the gas escape hole 10 of the battery 4 and the member main body 30 can be kept airtight. In this way, it is possible to assemble easily, and it is possible to reduce the labor and man-hours required for assembly. Therefore, the cost increase of the power supply device 1 can be suppressed.

Further, since the seal projection 31 can be passed through the through hole 20 of the holding plate 9, when the seal member 14 is attached to the holding plate 9 and the battery assembly 2 is attached to the holding plate 9, the battery 4 From the gas escape hole 10 to the member body 30
The airtightness can be more reliably maintained over the entire range. Therefore, the power supply device 1 can be assembled more easily and the cost increase of the power supply device 1 can be suppressed.

Further, when attached to the holding plate 9, the pressing member 15 pushes the sealing member 14 toward the battery assembly 2. Therefore, the seal projection 31 and the outer edge portion of the gas escape hole 10 are more surely contacted in an airtight state. Therefore, the discharge path 36 of the gas generated from the battery 4 can be surely kept airtight.

Further, the pressing member 15 and the seal member 14 form an exhaust path 36 for exhausting the gas generated from the battery 4. Therefore, the discharge path 36 can be assembled by attaching the pressing member 15 and the seal member 14 to the holding plate 9. In this way, the power supply device 1 can be assembled more easily, and the cost increase of the power supply device 1 can be further suppressed.

Next, a power supply device according to a second embodiment of the present invention will be described with reference to FIGS. 7 and 8. The same components as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.

In this embodiment, as shown in FIGS. 7 and 8, the pressing member 15 includes a ceiling wall 40 and a pair of side walls 41 continuous with both edges of the ceiling wall 40 in the width direction and has a cross section. It is shaped like a U-shaped gutter. As shown in FIG. 8, the pressing member 15 is inserted into the sealing member 14 in a state where the ceiling wall 40 faces the bottom plate 32 with a gap and the side wall 41 is located inside the peripheral wall 33. Then, the locking claw 19 is locked to the outer edge of the ceiling wall 40 of the pressing member 15, and the seal member 14 and the pressing member 15 are fixed to the holding plate 9.

Also in this embodiment, as in the above-described first embodiment, the seal member 14 integrally includes the member main body 30 and the seal projection 31. Therefore, it is possible to easily assemble, and it is possible to reduce the labor and man-hours required for the assembly. Therefore, the cost increase of the power supply device 1 can be suppressed. Further, the seal projection 31 can be passed through the through hole 20 of the holding plate 9. Therefore, the power supply device 1 can be assembled more easily and the cost increase of the power supply device 1 can be suppressed.

Further, when attached to the holding plate 9, the pressing member 15 pushes the sealing member 14 toward the battery assembly 2. Therefore, the exhaust path 3 for the gas generated from the battery 4
6 can be reliably kept airtight. Also, the pressing member 1
5 and the seal member 14 form an exhaust path 36 for exhausting gas from the battery 4. Therefore, the pressing member 1
By attaching 5 and the seal member 14 to the holding plate 9, the discharge path 36 can be assembled. In this way, the power supply device 1 can be assembled more easily, and the cost increase of the power supply device 1 can be further suppressed.

In the first and second embodiments described above, the pressing member 1 is arranged along the direction orthogonal to the surface 9a.
5 is brought close to the holding plate 9 to fix the holding plate 9, the seal member 14, and the pressing member 15. However, in the present invention, the holding member 9, the seal member 14, and the pressing member 15 may be fixed by sliding the pressing member 15 along the surface 9a.

[0051]

As described above, according to the present invention as set forth in claim 1, the duct member and the seal portion are integrally formed on the seal member. When the sealing member is attached to the holding member and the battery assembly is attached to the holding member without attaching the sealing parts to the ducts one by one, it is possible to keep airtightness from the gas escape hole of the battery to the duct part. . In this way, it is possible to assemble easily, and it is possible to reduce the labor and man-hours required for assembly. Therefore, the cost increase of the power supply device can be suppressed.

According to the second aspect of the present invention, since the seal portion can be passed through the through hole, when the seal member is attached to the holding member and the battery assembly is attached to the holding member,
The airtightness can be more reliably maintained from the gas escape hole of the battery to the duct portion. In this way, it is possible to assemble easily, and it is possible to reduce the labor and man-hours required for assembly. Therefore, the cost increase of the power supply device can be suppressed.

According to the third aspect of the present invention, when the pressing member is attached to the holding member, the sealing member is pressed toward the battery assembly. Therefore, the seal portion and the outer edge portion of the gas escape hole are more surely contacted in an airtight state. For this reason, it becomes possible to assemble easily, and it is possible to suppress the labor and man-hours required for assembling, and it is possible to suppress the soaring cost of the power supply device, and it is possible to reliably keep the discharge path of the gas generated from the battery airtight. .

According to the fourth aspect of the present invention, the duct member of the sealing member and the inside of the pressing member can be kept airtight by attaching the pressing member and the sealing member to the holding member. In this way, it is possible to assemble easily, and it is possible to reduce the labor and man-hours required for assembly. Therefore, the cost increase of the power supply device can be suppressed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a power supply device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a holding plate, a seal member, and a pressing member of the power supply device shown in FIG.

FIG. 3 is a perspective view showing a state where the holding plate, the seal member, and the pressing member shown in FIG. 2 are assembled together.

FIG. 4 is a perspective view of the holding plate, the seal member, and the pressing member of the power supply device shown in FIG. 2, as viewed from the back side.

5 is a perspective view showing a state where the holding plate, the seal member, and the pressing member shown in FIG. 4 are assembled with each other.

6 is a cross-sectional view taken along line VI-VI in FIG.

FIG. 7 is a perspective view showing a seal member and a pressing member of the power supply device according to the second embodiment of the present invention.

FIG. 8 is a cross-sectional view of a main part of a power supply device according to a second embodiment of the present invention.

FIG. 9 is a perspective view of a holding member of a conventional power supply device as viewed from the back side.

[Explanation of symbols]

1 power supply 2 Battery assembly 4 batteries 6 Positive electrode (positive electrode) 7 Negative electrode (negative electrode) 9 Holding plate (holding member) 10 Gas escape holes 14 Seal member 15 Pressing member 20 through holes 30 member body (duct part) 31 Seal protrusion (seal part) 36 Discharge route

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5H012 AA07 BB02 BB18 CC01 CC03                       CC06 CC08 DD00 EE01                 5H040 AA03 AA33 AS07 AT06 AY03                       CC01 CC12 CC42 DD05 FF01                       FF02

Claims (4)

[Claims] 1. A battery assembly including a plurality of batteries each having a positive electrode at one end and a negative electrode at the other end, a holding member attached to the battery assembly, and a gas generated from each battery during charging and discharging. And a discharge path for discharging the gas, wherein the battery has gas escape holes for discharging the gas to the outside, a duct part attached to the holding member, and a gas escape of each battery. A ring-shaped seal portion provided corresponding to each hole is provided integrally with a seal member, and when the seal member is attached to the holding member and the holding member is attached to the battery assembly, the seal member is attached. The power supply device is characterized in that the portion contacts the outer edge portion of the gas escape hole of the corresponding battery, and the inside of the gas escape hole, the seal portion, and the duct portion is kept airtight. 2. The holding member includes a plurality of through holes that are provided corresponding to the respective seal portions and through which the seal portions can pass, and the seal member is passed through the through holes. 2. The power source according to claim 1, wherein when the holding member having the seal member attached thereto is attached to the battery assembly, each seal portion comes into contact with an outer edge portion of the gas escape hole. apparatus. 3. The holding member, which is detachable from the holding member, and includes a pressing member that pushes the sealing member toward the battery assembly when attached to the holding member. The power supply device according to claim 2. 4. When attached to the holding member, the duct portion of the sealing member and the pressing member come into contact with each other, and the insides of the sealing member and the pressing member are kept airtight. The power supply device according to claim 3.