Battery pack housing case

Abstract

To provide a battery pack housing case capable of suppressing contact with a battery module even when a flying object collides, and capable of enhancing safety.SOLUTION: The battery pack housing case 11 includes the battery pack 20 that houses the battery module 21 inside the battery pack cover 22, the external cover 12 that houses the battery pack 20 inside, the flanges 25 and 26 provided outside the battery pack cover 22, and the flying object protection frame 13 provided inside the external cover 12, and the flying object protection frame 13 is provided outside the flanges 25 and 26 and at a height different from that of the flanges 25 and 26.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a battery pack storage case. [Background technology]

[0002] Patent Document 1 describes a battery pack that can be mounted on a vehicle, which has a front frame, a rear frame, and extensions and protrusions that connect them, and which prevents damage to the inside of the battery by having the protrusions absorb impacts from the rear of the vehicle as a crushable zone and transmitting the impact toward the front frame via the extensions. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-113153 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when placed outdoors, strong winds and other factors can cause flying objects to collide with the storage battery unit, resulting in unexpected damage. The battery pack in Patent Document 1 is designed to fasten to the vehicle at the bottom of the battery case, so while it is effective when an impact load is applied to the bottom of the battery case, it is less effective when the impact load is applied to the top of the battery case. [Means for solving the problem]

[0005] In one embodiment, the battery pack storage case comprises an external cover for storing the battery pack therein, a flange provided on the outside of the battery pack cover, and a flying object protection frame provided on the inside of the external cover, with the flying object protection frame being provided outside the flange and at a different height from the flange. [Effects of the Invention]

[0006] The battery pack storage case of the present disclosure can prevent a flying object from contacting the battery module even in the event of a collision, thereby improving safety. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing an example of a battery pack storage case according to a first embodiment. [Figure 2] 1 is a cross-sectional view showing an example of a battery pack storage case according to a first embodiment. [Figure 3] 1A and 1B are a cross-sectional view and a perspective view showing a part of a battery pack storage case according to a first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing an example of a battery pack storage case according to the first embodiment. Fig. 2 is a cross-sectional view showing an example of a battery pack storage case according to the first embodiment. Fig. 3 is a cross-sectional view and a perspective view showing a part of the battery pack storage case according to the first embodiment.

[0009] In FIG. 1, a storage battery unit 10 has a battery pack storage case 11 at its outermost portion, and a battery pack 20 is fixed inside the battery pack storage case 11.

[0010] The battery pack 20 has a sealed structure to prevent short circuits due to water intrusion, etc. However, a breathable membrane that is impermeable to water but permeable to air is attached to adjust the pressure inside the battery pack 20. Reinforcements 14 that support the battery modules 21 are installed inside the battery pack 20 and extend in the x direction.

[0011] The battery pack storage case 11 includes an outer cover 12, a flying object protection frame 13, and a reinforcement 14. The outer cover 12 stores the battery pack 20 therein. The outer cover 12 is preferably made of a metal such as copper or aluminum.

[0012] In the battery pack 20, the battery is housed inside the battery pack cover 22. The battery pack cover 22 is structured so that a rubber seal (not shown) is sandwiched between the UPR cover 23 (upper cover) and the LWR case 24 (lower case) and fastened together. This structure ensures watertightness. To compress the rubber seal, the ends of the flanges 25, 26 of the UPR cover 23 and the LWR case 24 are bent in a direction that opens away from the surface that sandwiches the rubber seal, increasing surface rigidity.

[0013] The flying object protection frame 13 is provided inside the outer cover 12. The flying object protection frame 13 is provided outside the flanges 25, 26 and at a different height from the flanges 25, 26. The flying object protection frame 13 is preferably made of a metal such as copper or aluminum.

[0014] The reinforcement 14 is a reinforcing material that supports the battery module 21. The reinforcement 14 has a shape formed by combining two or more plates by welding or the like. One of the plates of the reinforcement 14 is arranged in the xy plane direction in FIG. 2. Another of the plates of the reinforcement 14 extends in the z-axis direction in FIG. 2 and is connected to the LWR case 24. The height at which the reinforcement 14 is located is near the flanges 25 and 26. The reinforcement 14 is preferably made of a metal such as copper or aluminum.

[0015] When a flying object 30 collides with the battery unit 10 due to strong winds such as a typhoon, if the flying object collides with the flying object protection frame 13, the battery pack 20 is protected by the flying object protection frame 13.

[0016] When a flying object 30 collides between two flying object protection frames 13, the flying object 30 does not collide directly with the flying object protection frame 13, and the battery pack 20 is protected by the rigidity of the external cover 12 and the rigidity of the flying object protection frame 13.

[0017] If this does not provide sufficient protection, the surfaces of the bent flanges 25 and 26 of the UPR cover 23 and LWR case 24 absorb the impact.

[0018] Furthermore, since the reinforcement 14 in the battery pack 20 has a flat surface in the x direction, which is the same as the direction in which the flying object 30 comes, deformation of the battery pack 20 in the x direction can be suppressed.

[0019] Thus, according to the battery pack storage case of the first embodiment, even when a flying object 30 collides with the battery module, the battery pack storage case can be prevented from coming into contact with the battery module, thereby improving safety.

[0020] Even if the battery module is hit by a flying object or other localized impact, damage to the battery module can be prevented. [Explanation of symbols]

[0021] 10 Battery unit 11 Battery pack storage case 12 Outer cover 13. Flying object protection frame 14 Reinforce 20 Battery pack 21 Battery module 22 Battery pack cover 23 UPR cover 24 LWR case 25, 26 flange

Claims

1. a battery pack that houses a battery module inside a battery pack cover; an outer cover that houses the battery pack; a flange provided on the outside of the battery pack cover; a flying object protection frame provided inside the outer cover; The battery pack storage case, wherein the flying object protection frame is provided outside the flange and at a different height from the flange.

2. the battery pack cover has an upper cover and a lower case, 2. The battery pack storage case according to claim 1, wherein the upper cover and the lower case are fastened together with a seal rubber sandwiched therebetween.

3. 3. The battery pack storage case according to claim 2, wherein the flanges of the upper cover and the lower case are bent.

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