Power supply device

Abstract

To provide a power source device which can prevent an air permeable waterproof part from being damaged even when high temperature gas blows out from a battery module.SOLUTION: A power source device comprises: battery modules 10, 11; a cover which stores the battery modules 10, 11 and is formed with an opening 45; a lid part 50 which is provided on the outer surface of the cover so as to close the opening 45; a plug which is provided in the cover; and a reinforcement member 45 which is provided on the inner surface of the cover and is provided along the opening edge part of the opening 45. The lid part 50 includes an air permeable waterproof part 81 which is provided between the inside of the cover and the outside. The plug is provided detachably through the opening 45 in such a state that the lid part 50 is detached. The reinforcement member 45 comprises: a reinforcement plate 57 which is formed so as to protrude in the protrusion direction being apart from the inner surface from the inner surface side of the cover; and a protrusion plate 56 which protrudes in the protrusion direction and is provided on the air permeable waterproof part 81 side with respect to the reinforcement plate 57. The length of the protrusion plate 56 is longer than the length of the reinforcement plate 57 in the protrusion direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a power supply device.

Background Art

[0002] Conventionally, various proposals have been made regarding power supply devices. For example, the power supply device described in Japanese Patent Application Laid-Open No. 2019-87402 includes a case and a breathing film provided at a vent formed in the case. The breathing film is a member that allows air to pass through but does not allow water to pass through.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A battery module is housed in the case of the above power supply device, and high-temperature gas may be ejected from the battery module. When the high-temperature gas is ejected and the high-temperature gas is blown onto a waterproof ventilation part such as a breathing film, the waterproof ventilation part is damaged.

[0005] The present disclosure has been made in view of the above problems, and an object thereof is to provide a power supply device capable of suppressing damage to a ventilation waterproof part even when high-temperature gas is ejected from a battery module.

Means for Solving the Problems

[0006] The power supply device includes a battery module, a cover that houses the battery module inside and has an opening formed therein, a lid portion provided on the outer surface of the cover so as to close the opening, a plug provided inside the cover, and a reinforcing member provided on the inner surface of the cover and along the opening edge of the opening. The lid portion includes a ventilation and waterproof portion provided between the inside of the cover and the outside. The plug is removably provided through the opening with the lid portion removed. The reinforcing member includes a reinforcing plate formed to project in an overhanging direction away from the inner surface from the inner surface side of the cover, and an overhanging plate that projects in the overhanging direction and is provided on the ventilation and waterproof portion side of the reinforcing plate. In the overhanging direction, the length of the overhanging plate is longer than the length of the reinforcing plate.

Advantages of the Invention

[0007] According to the power supply device according to the present disclosure, even if high-temperature gas jets out from the battery module, it is possible to suppress damage to the ventilation and waterproof portion.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0009] FIG. 1 is an exploded perspective view showing a power supply device 1 according to the present embodiment. FIG. 2 is an exploded perspective view showing a partially cross-sectional view of the internal configuration of the power supply device 1. The power supply device 1 is formed in a substantially rectangular parallelepiped shape. In FIGS. 1 and 2 and the like, the longitudinal direction D1 indicates the longitudinal direction of the power supply device 1. The width direction D2 indicates the width direction of the power supply device 1. The height direction H indicates the height direction of the power supply device 1.

[0010] The power supply device 1 includes battery modules 10, 11, a frame 12, an inner case 13, a protection member 14, an exterior cover 15, a junction box 16, and a control unit 17. The battery modules 10, 11, the frame 12, and the inner case 13 are provided on the upper surface of a bottom plate 20 described later, and the inner case 13 is provided so as to cover the battery modules 10, 11 and the frame 12.

[0011] The protection member 14 is provided on the outer peripheral side of the inner case 13, and the exterior cover 15 is provided so as to cover the protection member 14 and the inner case 13. Note that the protection member 14 includes a protection side wall 40, a protection side wall 41, a protection end wall 42, and a protection end wall 43. The exterior cover 15 includes a top plate 60, a side wall 61, a side wall 62, an end wall 63, and an end wall 64.

[0012] The frame 12 includes a bottom surface frame 18, a plurality of support columns 24, a plurality of support columns 25, a side wall 26, a side wall 27, a partition plate 28, and a partition plate 29. The bottom surface frame 18 includes a bottom plate 20 and pedestals 21, 22. The partition plate 28 is disposed at an interval above the bottom plate 20. The partition plate 29 is disposed above the partition plate 28.

[0013] The battery modules 10, 11 include a plurality of battery cells 19, and the plurality of battery cells 19 are arranged in the longitudinal direction D1. The battery module 10 is disposed on the upper surface 36 of the bottom plate 20. The battery module 11 is provided on the upper surface of the partition plate 28. The junction box 16 and the control unit 17 are provided on the upper surface of the partition plate 29.

[0014] The inner case 13 is fixed to the upper surface of the bottom plate 20. The inner case 13 includes a top plate 30, a side wall 31, a side wall 32, an end wall 33, and an end wall 34. The side walls 31, 32 and the end walls 33, 34 are formed so as to extend downward from the outer peripheral edge of the top plate 30.

[0015] In FIG. 2, an opening 45 is formed in an end wall 33 of the inner case 13. The end wall 33 is provided with a reinforcing member 46 and fixing members 47 and 48. The reinforcing member 46 is provided on the inner surface of the end wall 33, and the fixing members 47 and 48 are provided on the outer surface of the end wall 33. The fixing member 47 includes a fixing plate 51 and a bolt 52 provided on the fixing plate 51. The fixing member 48 includes a fixing plate 53 and a bolt 54 provided on the fixing plate 53.

[0016] The reinforcing member 46 is formed in an annular shape. The reinforcing member 46 includes a base plate 55, an overhanging plate 56, a reinforcing plate 57, and a reinforcing plate 58. The base plate 55 is formed in an annular shape along the opening edge of the opening 45. The base plate 55 is formed in a plate shape, and a rectangular opening 59 is formed in the base plate 55. The inner peripheral edge of the opening 59 includes a lower side 65. The overhanging plate 56 is connected to the lower side 65. The overhanging plate 56 is formed to extend from the lower side 65 toward the inside of the power supply device 1.

[0017] The reinforcing plate 57 is connected to the lower side of the outer peripheral edge of the base plate 55, and the reinforcing plate 57 is formed to extend from this lower side toward the inside of the power supply device 1. The reinforcing plate 58 is connected to one side of the outer peripheral edge of the base plate 55, and the reinforcing plate 58 is formed to extend from this side toward the inside of the power supply device 1. Note that a reinforcing plate similar to the reinforcing plate 58 is also provided on the other side of the outer peripheral edge of the base plate 55. Thus, since a plurality of reinforcing plates are provided in the reinforcing member 46, the rigidity is higher than when the reinforcing member 46 is formed only by the base plate 55.

[0018] The reinforcing plate 57 is disposed below the overhanging plate 56. The overhanging plate 56 and the reinforcing plate 57 are formed to extend in the longitudinal direction D1 from the inner surface side of the end wall 33. In the present embodiment, the overhanging direction is the longitudinal direction D1. FIG. 3 is a plan view schematically showing the overhanging plate 56 and the reinforcing plate 57. The overhanging plate 56 is formed to overhang more than the reinforcing plate 57.

[0019] Specifically, the reinforcing plate 57 is formed in a substantially rectangular shape, and the overhanging length in the longitudinal direction D1 is "L2". The overhanging length of the overhanging plate 56 is "L1". Note that the overhanging length L1 is the length of the longest part of the overhanging plate 56. And the overhanging length L1 is longer than the overhanging length L2. Returning to FIG. 2, the power supply device 1 includes a service plug 70 and a service connector 71. The service plug 70 is formed so as to be removable from and attachable to the service connector 71. When the service plug 70 is pulled out from the service connector 71, the battery modules 10 and 11 are electrically disconnected. The service connector 71 is provided on the upper surface of the partition plate 29, and the service connector 71 is connected to the junction box 16. The power supply device 1 includes a lid portion 50 provided so as to close the opening 45.

[0020] The lid portion 50 includes a plate-shaped main body 80, a breathable waterproof portion 81 provided on the main body 80, and a seal member 82. The main body 80 is formed in a plate shape. The breathable waterproof portion 81 allows vapor, gas, etc. to pass through while suppressing the entry of liquids such as water from the outside to the inside of the inner case 13. The seal member 82 is provided on the inner surface of the main body 80. The seal member 82 is formed in an annular shape.

[0021] A plurality of bolt insertion holes (not shown) are formed in the lid portion 50, and bolts 52 and 54 are inserted into the respective bolt insertion holes. By screwing nuts 83 and 84 with bolts 52 and 54, the lid portion 50 is fixed to the end wall 33.

[0022] In a state where the lid portion 50 is fixed to the end wall 33, the seal member 82 is in close contact with the end wall 33. Thereby, entry of foreign matters such as water from the opening 45 into the inner case 13 is suppressed. Here, due to the tightening force of the bolts 52, 54 and the nuts 83, 84, the seal member 82 is in close contact with the end wall 33, and a load is applied to the end wall 33 through the seal member 82. The reinforcing member 46 is provided on the inner surface of the end wall 33 to suppress deformation of the end wall 33. Further, since the reinforcing member 46 includes a plurality of reinforcing plates as described above, deformation of the reinforcing member 46 is suppressed. Thereby, deformation of the end wall 33 is suppressed.

[0023] The overhanging plate 56 is located above the battery modules 10, 11. The overhanging plate 56 is located below the air-permeable waterproof portion 81. The overhanging plate 56 is provided at a position horizontally adjacent to the partition plate 29. The reinforcing plate 57 is disposed below the overhanging plate 56, and the overhanging plate 56 is located closer to the air-permeable waterproof portion 81 than the reinforcing plate 57. In the power supply device 1 configured as described above, high-temperature gas may be ejected from the battery modules 10, 11.

[0024] In this case, since the overhanging plate 56 is formed so as to project largely, it is possible to suppress the high-temperature gas from the battery modules 10, 11 from reaching the air-permeable waterproof portion 81. Further, since the overhanging plate 56 is formed so as to project horizontally from the lower side of the opening 45, it is possible to suppress the high-temperature gas from reaching the opening 45. Thereby, it is possible to suppress the seal member 82 disposed on the outer surface of the end wall 33 from becoming high temperature, and it is possible to ensure the sealing performance by the seal member 82.

[0025] In the power supply device 1 configured as described above, maintenance inside the power supply device 1 may be performed. At this time, the operator removes the exterior cover 15 and the protection member 14. Then, the lid portion 50 is removed. Then, the operator removes the service plug 70 from the service connector 71. At this time, as shown in FIG. 2, the overhanging plate 56 is formed so as to project toward the inside of the power supply device 1 more than the reinforcing plate 57.

[0026] For this reason, when the operator pulls out the service plug 70, even if the operator releases the service plug 70, the service plug 70 can be prevented from riding on the overhanging plate 56 and falling to the bottom of the inner case 13. When the maintenance is completed, the operator attaches the service plug 70 to the service connector 71. Also in this case, similarly, the service plug 70 can be prevented from falling to the bottom of the inner case 13. Thus, according to the power supply device 1, the work efficiency of the operator is improved.

[0027] The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The present disclosure is indicated by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims be included.

Explanation of Reference Numerals

[0028] 1 Power supply device, 10, 11 Battery module, 12 Frame, 13 Inner case 14 Protection member, 15 Exterior cover, 56 Overhanging plate, 57, 58 Reinforcing plate.

Claims

【Claim 1】 A battery module; A cover that houses the battery module therein and has an opening formed therein; A lid portion provided on an outer surface of the cover so as to close the opening; A service connector provided in the cover; A service plug provided in the cover and attached to the service connector; A reinforcing member provided on an inner surface of the cover and along an opening edge of the opening; Comprising: The lid portion includes a breathable waterproof portion provided between the inside of the cover and the outside; The service plug is removably provided from the service connector through the opening with the lid portion removed; When the service plug is removed from the service connector, the battery module is electrically disconnected; The reinforcing member is formed to project in an overhanging direction away from the inner surface from the inner surface side of the cover and is provided below a lower side of the opening edge of the opening, and includes a reinforcing plate; An overhanging plate that projects in the overhanging direction and is provided on the lower side of the reinforcing plate; In the overhanging direction, a length of the overhanging plate is longer than a length of the reinforcing plate; The overhanging plate is provided below the breathable waterproof portion and above the battery module, and is a power supply device.

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