• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    battery pack a battery pack that includes: a main box body housed in a battery and having the same box shape with an opening on the top side, a cover covering the opening on the top side of a box. the main body of a box has a first sealing flange formed along an outer peripheral part of the main body of the box, and the cover has a second sealing flanges are in contact with each other and seal the battery pack. and second sealing flanges are curved with a predetermined curvature.
    公开号:BR112012000777B1
    申请号:R112012000777-7
    申请日:2010-06-18
    公开日:2021-04-06
    发明作者:Tadayoshi Hashimura；Masaaki Satou
    申请人:Nissan Motor Co., Ltd.；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a battery pack which houses a battery in it and which is mounted on an electric vehicle or the like. BACKGROUND OF THE TECHNIQUE
    [0002] A battery pack to house multiple batteries is provided in an electric vehicle that travels using an engine as a drive source. Japanese Patent No. 3199296 describes a battery pack including a battery box and a cover, and provided under seats in which the occupants are seated. The battery box is arranged on the underside of the battery pack, and is box-shaped with a closed bottom. The cover is located on the upper side of the battery box. SUMMARY OF THE INVENTION
    [0003] However, the aforementioned battery packaging has a concern that the sealing performance between the battery box and the cover may be decreased due to the following reason. Specifically, since a corresponding part between the battery box and the cover on the battery pack is linear when viewed from the side, the position of the cover should probably be displaced laterally with respect to the battery box when assembling the battery box and the cover. . As a result, a space is formed between the battery box and the cover, resulting in decreased sealing performance.
    [0004] The present invention was made in view of the concern described above, and the aim of the present invention is to provide a battery pack that allows positional displacement during assembly to be avoided, and a high sealing performance to be maintained.
    [0005] One aspect of the present invention is a battery pack that includes a main box body housing a battery therein, the main box body having a box shape with an opening on the upper side, the main box body having a first flange of seal formed along an external peripheral part of the main box body; and a cover covering the opening on the upper side of the main body of the box, the cover having a second sealing flange formed along an outer peripheral part of the cover, the first and second sealing flanges being in contact with each other and sealing the battery pack, in which the first and second sealing flanges are curved with a predetermined curvature. BRIEF DESCRIPTION OF THE DRAWINGS
    [0006] Figure 1 is a perspective view of a battery pack according to an embodiment of the present invention.
    [0007] Figure 2 is a front view of the battery pack of Figure 1.
    [0008] Figure 3 is a cross-sectional view taken along the line ll-lll of Figure 1.
    [0009] Figure 4 is a cross-sectional view taken along line IV-IV in Figure 1. DESCRIPTION OF THE MODALITIES
    [0010] Hereinafter, a preferred embodiment is described with reference to the drawings.
    [0011] As shown in Figure 1, a battery pack 1 according to the embodiment of the present invention includes a main box body 3 and a lid 5. The main box body 3 has a box shape with an opening on the top side and a closed bottom. . The cover 5 is arranged on the main housing body 3, and covers the opening on the upper side of the main housing body 3. When the battery pack 1 is mounted on a vehicle, the main housing body 3 is arranged on a lower side of the battery pack 1. Sealing flanges are formed along the outer peripheral parts of the opening on the upper side of the main housing body 3 and the opening on the lower side of the lid 5, respectively. These sealing flanges are placed in contact with each other to seal the battery pack 1.
    [0012] A connector fixing bracket 7 is provided in a central part, in a direction of the vehicle width, of a front surface of the main housing body 3. Fixing brackets 9 are fixed on the front surface of the main housing body 3, respectively on the outer sides, in the direction of the vehicle width, of the connector fixing bracket 7. With the fixing brackets 9, the battery pack 1 is supported on a vehicle body element such as a side element 29 (refers to to Figure 4). In addition, for example, four fixing brackets 9 are attached to each of the left and right side surfaces of the main housing body 3.
    [0013] The lid 5 has a first convex part 11 and a second convex part 13. The first convex part 11 is arranged on a front side in a front-rear direction, and curved upwards. The second convex part 13 is arranged on a rear side in the front-rear direction of the vehicle, and curved upwards. These first convex part 11 and second convex part 13 are disposed apart from each other in the front-rear direction with a predetermined distance between them.
    [0014] In addition, the sealing flange along the outer peripheral part of the substantially rectangular lower side opening of the cover 5 is formed by a front sealing flange 15, a rear sealing flange (not shown), and a pair of lateral sealing flanges 17, which are integrated with each other. The front sealing flange 15 is arranged on a front side in the front-rear direction of the vehicle. Each side sealing flange 17 is joined to the front sealing flange 15 and the rear sealing flange on both edges, in the front-rear direction of the vehicle, of the side sealing flange 17, such that the side sealing flange 17 is continuous for the front sealing flange 15 and ο rear sealing flange on both edges.
    [0015] In addition, the sealing flange along the outer peripheral part of the substantially rectangular upper side opening of the main housing body 3 is formed by a front sealing flange 31 (referring to Figure 3), a rear sealing flange ( not shown), and a pair of side sealing flanges 33 (refer to Figure 4), which are integrated with each other. The front sealing flange 31 is arranged on the front side in the front-rear direction of the vehicle, and extends towards the width of the vehicle, the rear sealing flange is arranged on the rear side in the front-rear direction of the vehicle, and extends up in the direction of the vehicle width. The side sealing flanges 33 are arranged on the outer sides in the direction of the vehicle width, and extend in the front-rear direction. Each side sealing flange 33 is joined on the front sealing flange 31 and the rear sealing flange, on both edges, in the front-rear direction of the vehicle, of the side sealing flange 33, such that the seat sealing flange 33 it is continuous for the front sealing flange 31 and the rear sealing flange, on both edges.
    [0016] In this embodiment, the front sealing flanges 15 and 31 of the main housing body 3 and the cover 5 are curved in a vertical direction, so that the front sealing flanges 15 and 31 are in an arc and convex shape upwards when the battery pack 1 is arranged with the lid 5 being on the top side and the main housing body 3 being on the bottom side as shown in Figure 2. Specifically, the front sealing flange 15 of the lid 5 is curved in the vertical direction with a predetermined radius of curvature R so as to be higher in a central part 15a in the direction of the width of the vehicle, and to be lower in both parts of the left and right edges 15b at the same level. Meanwhile, the front sealing flange 31 of the main housing body 3 is curved in a vertical direction so that it is convex upwards along the curved surface of the front sealing flange 15 of the cap 5. Note that the difference in height between the central part 15a of the front sealing flange 15 and both parts of the left and right edges 15b thereof are determined at a distance D. The distance D can be adjusted according to the application, but can preferably be within a range of about from one hundredth to about one tenth of the width of the battery pack 1, and may more preferably be within a range around one-fiftieth to about one-thirtieth of the width of the battery pack 1.
    [0017] In Figures 1 and 2, the front sealing flanges 15 and 31 are curved to be located in the front-rear direction of the vehicle in a state where the battery pack 1 is mounted on a vehicle. In this modality, also on the rear side (not shown) in the front-rear direction of the vehicle, the rear sealing flanges of the main housing body 3 and the cover 5 are curved in the vertical direction so that they are convex upwards, when similar to the front seal flanges 15 and 31.
    [0018] In addition, a surface of each side sealing flange 17 of the cover 5 is inclined in such a way that the height of the surface is gradually reduced to the outer sides in the direction of the width of the vehicle so that the surface of the side sealing flange 17 it can be smoothly continuous for the front sealing flange 15 of the cover 5 and for the rear sealing flange of the same. Likewise, the surface of each side sealing flange 33 of the main housing body 3 is inclined in such a way that the height of the surface is gradually reduced to the outer sides in the direction of the width of the vehicle so that the surface of the side sealing flange 33 can be smoothly continuous with the front sealing flange 31 and the rear sealing flange.
    [0019] Note that, in battery pack 1, the side sealing flanges 17 and 33 are substantially linear in the front-rear direction of the vehicle, the side sealing flanges 17 and 33 being located on the outer sides of the direction of the vehicle. vehicle width in a state where battery pack 1 is mounted on a vehicle. As a result, high damping performance can be maintained when a vehicle collides.
    [0020] As shown in Figure 3, a connector 19 is attached to the connector fixing bracket 7, the connector 19 being, for example, a high voltage wire network to which a motor or an inverter is connected. A rear edge portion 19a of connector 19 protrudes into battery pack 1, and is attached to an auxiliary unit 23 with a support screw 21. The front sealing flange 15 of the cover 5 and the sealing flange front 31 of the main housing body 3 are sealed with a rubber sealing member 35 placed between them.
    [0021] As shown by the long double-dot line in Figure 4, a flange 27 extends outward in the direction of the vehicle's width (left in Figure 4), while protruding from a left edge part of a panel. floor 25. Side element 29 having a closed cross-sectional shape is provided under flange 27.
    [0022] As described above, the mounting brackets 9 projecting outward in the direction of the vehicle width are provided on the undersides of both side surfaces of the battery pack 1 on the outer sides in the direction of the vehicle width. Each of the fastening brackets 9 is fastened to a bottom surface of the side member 29 with a screw 37. In addition, the side sealing flanges 17 of the cover 5 and the side sealing flanges 33 of the main housing body 3 are sealed with the rubber sealing element 35 placed between them.
    [0023] The battery pack 1 according to the embodiment of the present invention includes the main body of the box 3 which houses batteries and which has the shape of a box with a closed bottom, and the lid 5 which covers the upper side opening of the main body of the box 3. The sealing flange including the front sealing flange 15, the rear sealing flange, and the side sealing flanges 17, is formed along the outer peripheral part of the main housing body, while the sealing flange including the sealing flange front 31, the rear sealing flange, and the side sealing flanges 33 are formed along the outer peripheral part of the cap 5. These sealing flanges are brought into contact with each other to provide the sealing between them. The front sealing flanges 15 and 31 and the rear sealing flanges of the main housing body 3 and the cover 5 are curved with the predetermined radius of curvature R. Consequently, when the sealing flange of the cover 5 is placed on the sealing flange. of the main housing body 3 for assembly with the sealing element 35 placed between them, the lateral position displacement of the cover 5 with respect to the main housing body 3 is prevented. As a result, a space is less likely to be formed between the sealing flanges, where high sealing performance can be maintained.
    [0024] Furthermore, in the battery pack 1, the front sealing flanges 15 and 31 and the rear sealing flanges of the main housing body 3 and the cover 5 are curved so that they are curved upwards when the battery pack 1 is arranged with the lid 5 being on the upper side and the main box body 3 being on the lower side. For this reason, when a vehicle is driven with battery pack 1 being mounted on the vehicle body, mud, water and the like splashed from the wheel, they slide efficiently or flow down along the upper surfaces of the sealing flanges.
    [0025] In battery pack 1 according to this modality, the sealing flanges curved to be convex upwards are provided on the front and rear sides in the front-rear direction of the vehicle. However, a battery pack can have a structure in which a curved sealing flange as described above is arranged on either the front and rear sides in the front-rear direction of the vehicle. Here, assume a case where a connector fixing bracket to which a connector for a high voltage wire network is connected is provided on a front surface of a main box body of a battery pack. In such a case, when the sealing flanges curved to be convex upwards are provided on a front side, in the front-rear direction of the vehicle, of the battery pack, the sealing performance for the fastening part in which the wire network high voltage is fixed is further improved due to the following reason. Specifically, when driving a vehicle, even when mud, water and the like on the wheel are splashed in a direction from the front side to the rear side on an upper surface of the sealing flanges, the mud, water and the like, effectively slide or flow down towards both sides towards the width of the vehicle. Note that when parts for which high sealing performance is provided exist only on a rear surface of a main case body of a battery pack, it is also possible to provide a curved sealing flange to be convex upwards on one side only rear, in the front-rear direction of the vehicle, from the battery pack.
    [0026] The present description refers to matters contained in Japanese Patent Application No. 2009-167732, filed on July 16, 2009, the descriptions of which are expressly incorporated herein by reference in their entirety. INDUSTRIAL APPLICABILITY
    [0027] The battery pack according to the present invention makes it possible to prevent a lateral displacement of the cover with respect to the main body of the box otherwise occurring when the sealing flange of the cover is mounted on the sealing flange of the main body of the box for assembly. In this way, a gap is less likely to be formed between the sealing flanges, and a high sealing performance can be maintained. Consequently, the battery pack of the present invention is industrially applicable.
    权利要求:
    Claims (2)
    [0001]
    Battery pack (1), comprising: a main housing body (3) housing a battery in it, the main housing body (3) having a box shape with an opening on the upper side, the main housing body (3) having a first sealing flange (31 ) formed along an external peripheral part of the main housing body (3), the first sealing flange (31) extending in an extension direction along the external peripheral part of the main housing body (3); and a cover (5) covering the opening on the upper side of the main body of the box (3), the cover (5) having a second sealing flange (15) formed along an outer peripheral part of the cover (5), the second sealing flange (15) extending in the direction of extension, the first and second sealing flanges (31, 15) being in contact with each other and sealing the battery pack (1), wherein the first and second sealing flanges (31, 15) are formed to have curved surfaces with a predetermined curvature in a cross section along the direction of extension and are coupled to each other, where one of the curved coupling surfaces is convex and the other curved coupling surface is concave, where the first and second sealing flanges (31, 15) are curved upwards such that the first and second flanges (31, 15) are upwardly convex when the battery pack (1) is mounted on a vehicle with the lid (5) being on an upper side and the main box body (3) being on a lower side; the said battery pack being CHARACTERIZED by the fact that: the first seal has a higher point in the central part of the first sealing flange (31) and a lower point in the edge portions of the first sealing flange (31).
    [0002]
    Battery pack (1) according to claim 1, CHARACTERIZED by the fact that the battery pack (1) is mounted on the vehicle with the curved sealing flanges being arranged on at least one on the front side and one rear side, in a front-rear direction of the vehicle, from the battery pack (1).
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    同族专利:
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    引用文献:
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    法律状态:
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-02-19| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2019-09-17| B07A| Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]|
    2020-10-06| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2021-01-12| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-09| B09X| Decision of grant: republication|
    2021-04-06| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 06/04/2021, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2009167732A|JP5531478B2|2009-07-16|2009-07-16|battery pack|
    JP2009-167732|2009-07-16|
    PCT/JP2010/004096|WO2011007501A1|2009-07-16|2010-06-18|Battery pack|
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