Battery device

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery device. The battery device comprises a bottom plate, a fence piece and a fixing piece, wherein the bottom plate is used for supporting a battery module; the two enclosing pieces are arranged at the two ends of the bottom plate in the first direction correspondingly. The two fixing pieces are distributed in a spaced mode in the second direction, the second direction is perpendicular to the first direction, the two fixing pieces are connected between the two enclosure pieces, the two fixing pieces and the two enclosure pieces form an enclosure frame, and the enclosure frame is used for fixing the battery pack; the fixing piece comprises a first contact part, a protruding part and a second contact part, the first contact part, the protruding part and the second contact part are distributed in the third direction, the third direction is perpendicular to the first direction and the second direction at the same time, the cross section of the protruding part is in a U shape or an arc shape, and the first contact part and the second contact part can both make contact with the battery. The protruding part protrudes towards the side away from the battery pack in the second direction. According to the utility model, secondary damage to the battery module due to expansion or deformation of the battery module is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery device. Background Art

[0002] The battery module fixing device is used to be arranged around the battery module to fix the battery module. The battery module fixing device generally includes a baffle and a fixing member, and the baffle and the fixing member are arranged to form a frame. In the related art, some fixing members are flat-plate type, and the fixing members are attached to part of the side wall of the battery module. When the battery module expands or deforms, the fixing members will pull the battery module and cause secondary damage to the battery module; some fixing members are U-shaped structures, and the two ends of the fixing members are in contact with the battery module. The contact area between this type of fixing member and the battery module is too small, and the pressure of the fixing member on the battery module is relatively large. When the battery module expands or deforms, the fixing member is likely to cause secondary damage to the battery module. That is, the fixing members in the related art have the problem of causing secondary damage to the battery module when the battery module expands or deforms. Utility Model Content

[0003] The purpose of the present utility model is to provide a battery device, a battery pack and an electrical device, which can avoid secondary damage to the battery pack due to expansion or deformation of the battery pack.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A battery device comprising:

[0006] a bottom plate for supporting the battery pack;

[0007] Two enclosure members are respectively provided at two ends of the bottom plate along the first direction;

[0008] Two fixing members are spaced apart along a second direction, which is perpendicular to the first direction. Both the fixing members are connected between the two enclosure members and form a frame with the two enclosure members, and the frame is used to fix the battery pack; the fixing member includes a first contact portion, a protruding portion and a second contact portion, and the first contact portion, the protruding portion and the second contact portion are distributed along a third direction, which is perpendicular to both the first direction and the second direction; the cross-section of the protruding portion is U-shaped or arc-shaped, and the first contact portion and the second contact portion are respectively connected to the two ends of the protruding portion, and the first contact portion and the second contact portion can both contact the battery pack, and the protruding portion protrudes toward the side away from the battery pack along the second direction.

[0009] As a preferred technical solution of the battery device, the first contact portion, the protruding portion, and the second contact portion all pass through the fixing member along the first direction.

[0010] As a preferred technical solution of the battery device, the height of the protrusion relative to the first contact portion and the second contact portion ranges from 0.1 mm to 3 mm.

[0011] As a preferred technical solution for the battery device, the thickness of the first contact portion, the protruding portion and the second contact portion are all in the range of 1mm-1.5mm, and the height of the protruding portion relative to the first contact portion and the second contact portion is in the range of 1mm-3mm.

[0012] As a preferred technical solution of the battery device, the ratio of the width of the first contact portion to the height of the battery pack is in the range of 1 / 20-1 / 8, and the ratio of the width of the second contact portion to the height of the battery pack is in the range of 1 / 20-1 / 8.

[0013] As an optimal technical solution for the battery device, the height of the fixing part from the bottom plate is in the range of 1 / 2-3 / 4 of the height of the battery pack, and the ratio of the width of the first contact portion and the second contact portion to the height of the battery pack is both in the range of 1 / 20-1 / 8.

[0014] As a preferred technical solution of the battery device, the ratio of the width of the first contact portion and the second contact portion to the height of the battery pack is in the range of 1 / 20-1 / 8.

[0015] As a preferred technical solution of the battery device, the width of the fixing member ranges from 50 mm to 60 mm.

[0016] As a preferred technical solution of the battery device, the top of the enclosure member is flush with the top of the fixing member.

[0017] As a preferred technical solution of the battery device, the enclosure member and the base plate are fixedly connected via a mounting base.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a battery device, including a base plate, two enclosure members and two fixing members, the base plate is used to support a battery pack; the two enclosure members are respectively arranged at both ends of the base plate along a first direction; the two fixing members are spaced apart along a second direction, the second direction is perpendicular to the first direction, the two fixing members are connected between the two enclosure members, and form a frame with the two enclosure members, the frame is used to fix the battery pack; the fixing member includes a first contact portion, a protrusion and a second contact portion, the first contact portion, the protrusion and the second contact portion are distributed along a third direction, the third direction is perpendicular to the first direction and the second direction at the same time, the cross-section of the protrusion is U-shaped or arc-shaped, the first contact portion and the second contact portion are respectively connected to both ends of the protrusion, the first contact portion and the second contact portion are both used to contact the battery pack, and the protrusion protrudes toward the side away from the battery pack along the second direction. When fixing the battery pack, the first contact portion and the second contact portion are in contact with the battery pack to ensure the contact area between the fixing part and the battery pack and avoid excessive pressure between the fixing part and the battery pack; the raised portion connects the first contact portion and the second contact portion, and the raised portion does not contact the battery pack. When the battery pack expands or deforms, it will have a certain pulling effect on the first contact portion and the second contact portion, and the raised portion provides a margin for the pulling of the first contact portion and the second contact portion, so that the battery pack will not be damaged secondary due to the pulling of the first contact portion and the second contact portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a battery device and a battery pack provided by an embodiment of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of a battery device provided by an embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of a fixing member involved in an embodiment of the present utility model from a first perspective;

[0023] Figure 4 2 is a schematic structural diagram of a fixing member involved in an embodiment of the present utility model from a second perspective;

[0024] Figure 5 It is a cross-sectional view of the fixing member involved in the embodiment of the present utility model.

[0025] In the picture:

[0026] 10. Bottom plate; 20. Enclosing member; 30. Fixing member; 31. First contact portion; 32. Second contact portion; 33. Raised portion; 40. Mounting seat;

[0027] 100. Battery pack. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] like Figures 1 to 5 As shown, an embodiment of the present invention provides a battery device, including a base plate 10, an enclosure 20 and a fixing member 30. The base plate 10 is used to support the battery pack 100. The enclosure 12 is arranged on the base plate. The fixing member 30 is connected to the enclosure 20 and forms a frame with the enclosure 20. The frame is used to fix the battery pack 100.

[0033] like Figure 1 and Figure 2As shown, in this embodiment, there are two enclosure members 20, and the two enclosure members 20 are respectively arranged at both ends of the bottom plate 10 along the first direction. Optionally, the first direction can be the length direction of the battery pack 100, or it can be the width direction of the battery pack 100. In this embodiment, the first direction is the length direction of the battery pack 100. There are two fixing members 30, and the two fixing members 30 are spaced apart in the second direction, and the second direction is perpendicular to the first direction. Optionally, the second direction can be the width direction of the battery pack 100, or it can be the length direction of the battery pack 100. In this embodiment, the second direction is the width direction of the battery pack 100. Both fixing members 30 are connected between the two enclosure members 20, and form a frame with the two enclosure members 20.

[0034] In this embodiment, the number of fixing members 30 on each side of the battery pack 100 along the second direction is one. In other embodiments, the number of fixing members 30 on each side of the battery pack 100 may be multiple. Optionally, the multiple fixing members 30 may be spaced apart or continuously distributed along the height direction of the battery pack 100.

[0035] Optionally, the fixing member 30 and the enclosure member 20 may be connected by welding, fasteners, or riveting. In this embodiment, the fixing member 30 and the enclosure member 20 are connected by rivets, for example, stainless steel rivets with a strength of at least M6, or carbon steel rivets with a strength of at least M6, but not limited thereto.

[0036] In this embodiment, a mounting seat 40 is provided on the base plate 10, and the mounting seat 40 and the base plate 10 can be connected by welding or by fasteners; the enclosure 20 is connected to the mounting seat 40, and the enclosure 20 and the mounting seat 40 can be connected by welding or by fasteners.

[0037] like Figures 3 to 5 , and combined with Figure 1 As shown, the fixing member 30 includes a first contact portion 31, a protrusion 33 and a second contact portion 32. The first contact portion 31, the protrusion 33 and the second contact portion 32 are distributed along a third direction, and the third direction is perpendicular to the first direction and the second direction. In this embodiment, the third direction is the height direction of the battery pack 100. The cross-section of the protrusion 33 (i.e., the cross-section in the width direction of the protrusion 33) is U-shaped or arc-shaped. The first contact portion 31 and the second contact portion 32 are respectively connected to the two ends of the protrusion 33. The first contact portion 31 and the second contact portion 32 can both contact the battery pack 100, and the protrusion 33 protrudes toward the side away from the battery pack 100 along the second direction. Optionally, the cross-section of the fixing member 30 is in the shape of an X, a π or an Ω, but is not limited thereto.

[0038] When the battery pack 100 is fixed, the first contact portion 31 and the second contact portion 32 are in contact with the battery pack 100 to ensure the contact area between the fixing member 30 and the battery pack 100 and avoid excessive pressure between the fixing member 30 and the battery pack 100; the raised portion 33 connects the first contact portion 31 and the second contact portion 32, and the raised portion 33 does not contact the battery pack 100. When the battery pack 100 expands or deforms, it will have a certain pulling effect on the first contact portion 31 and the second contact portion 32, and the raised portion 33 provides a margin for the pulling of the first contact portion 31 and the second contact portion 32, so that the battery pack 100 will not be damaged secondary due to the pulling of the first contact portion 31 and the second contact portion 32.

[0039] In this embodiment, the first contact portion 31, the raised portion 33, and the second contact portion 32 all extend along the first direction and penetrate the fixing member 30. That is, any position of the fixing member 30 along the first direction is composed of the first contact portion 31, the raised portion 33, and the second contact portion 32. This ensures that any position where the fixing member 30 contacts the battery pack 100 can avoid secondary damage to the battery pack 100.

[0040] The height of the protrusion 33 determines the pulling amount between the first contact portion 31 and the second contact portion 32. The higher the protrusion height, the greater the pulling amount allowed between the first contact portion 31 and the second contact portion 32, and the larger the space occupied by the fixing member 30 in the direction of the protrusion height of the protrusion 33. Taking into account the pulling amount of the fixing member 30 and the space occupied by the fixing member 30, in this embodiment, Figure 5 As shown, the range of the protrusion height a of the protrusion 33 relative to the first contact portion 31 and the second contact portion 32 is set to 0.1mm-3mm. Optionally, the protrusion height a of the protrusion 33 relative to the first contact portion 31 and the second contact portion 32 may be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm or 3mm.

[0041] The fixing member 30 is set to have equal thickness, that is, the thickness of the first contact portion 31, the second contact portion 32 and the protrusion 33 are all equal. The thickness of the fixing member 30 determines the structural strength of the fixing member 30. The thicker the fixing member 30, the greater the structural strength of the fixing member 30, the more stable the fixation of the battery pack 100, and the less likely it is to be deformed by pulling. Considering the structural strength of the fixing member 30 and the tensile deformation ability, in this embodiment, Figure 5 As shown, the thickness b of the first contact portion 31, the second contact portion 32, and the protrusion 33 (i.e., the thickness b of the plate of the fixing member 30) is set to be in the range of 1 mm to 1.5 mm. Optionally, the thickness b of the plate of the fixing member 30 can be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm.

[0042] In some embodiments, the height a of the protrusion 33 relative to the first contact portion 31 or the second contact portion 32 ranges from 1 mm to 3 mm, and the thickness b of the plate of the fixing member 30 ranges from 1 mm to 1.5 mm. That is, the height of the protrusion 33 and the thickness of the plate of the fixing member 30 are comprehensively considered.

[0043] The width of the first contact portion 31 and the second contact portion 32 determines the pressure on the battery pack 100. The larger the width of the first contact portion 31 and the second contact portion 32, the larger the contact area with the battery pack 100, the smaller the pressure on the battery pack 100, the smaller the possibility of secondary damage to the battery pack 100, and the more stable the fixation of the battery pack. In addition, the width of the first contact portion 31 and the second contact portion 32 is related to the height of the battery pack 100. The higher the height of the battery pack 100, the greater the expansion or deformation, and the larger the required width of the first contact portion 31 and the second contact portion 32. In this embodiment, Figure 5 As shown, the ratio of the width c of the first contact portion 31 and the second contact portion 32 to the height of the battery pack 100 is set to a range of 1 / 20-1 / 8. Alternatively, the ratio of the width c of the first contact portion 31 and the second contact portion 32 to the height of the battery pack 100 can be in the range of 1 / 20, 1 / 19, 1 / 18, 1 / 17, 1 / 16, 1 / 15, 1 / 14, 1 / 13, 1 / 12, 1 / 11, 1 / 10, 1 / 9 or 1 / 8. Optionally, the widths of the first contact portion 31 and the second contact portion 32 are equal.

[0044] In some embodiments, the height of the fixing member 30 from the base plate 10 is within a range of 1 / 2 to 3 / 4 of the height of the battery pack 100, and the ratio of the width of the first contact portion 31 and the second contact portion 32 to the height of the battery pack 100 is within a range of 1 / 20 to 1 / 8. The maximum expansion of the battery pack 100 occurs in the middle of the battery pack 100, i.e., at 1 / 2 of the height of the battery pack 100. The closer to the middle of the battery pack 100, the larger the ratio of the width of the first contact portion 31 and the second contact portion 32 to the height of the battery pack 100 should be; the further away from the middle of the battery pack 100, the smaller the ratio of the width of the first contact portion 31 and the second contact portion 32 to the height of the battery pack 100 should be.

[0045] The thickness of the fixing member 30 is 1mm-1.5mm, and the ratio of the width of the first contact portion 31 and the second contact portion 32 to the height of the battery is in the range of 1 / 20-1 / 8. The fixing strength of the fixing member 30 is related to the thickness of the fixing member 30. The thicker the plate, the greater the fixing strength, and in this case, the larger the ratio of the width of the first contact portion 31 and the second contact portion 32 to the height of the battery pack 100 needs to be.

[0046] like Figure 5 As shown, the width d of the fixing member 30 is greater than or equal to 50 mm and less than or equal to 60 mm. Optionally, the width of the fixing member 30 is 50 mm, 51 mm, 52 mm, 53 mm, 54 mm, 55 mm, 56 mm, 57 mm, 58 mm, 59 mm or 60 mm.

[0047] By setting the size of the fixing member 30 as described above, the fixing member 30 can be manufactured with minimal material consumption and optimal cost while avoiding secondary damage to the battery pack 100 .

[0048] Alternatively, as Figure 2 As shown, the top of the enclosure 20 is flush with the top of the fixing member 30, that is, the height of the enclosure 20 is adapted to the height of the fixing member 30, which not only ensures that the enclosure 20 and the fixing member 30 form a frame to fix the battery pack 100, but also avoids material waste of the enclosure 20, saves costs, and has a more beautiful structure.

[0049] Optionally, the enclosure member 20 and the fixing member 30 can both be formed by bending sheet metal, or by cutting metal plates and then welding them. Of course, the material and forming method of the enclosure member 20 and the fixing member 30 are not limited to this.

[0050] The present invention also provides a battery pack including a battery pack 100 and the battery assembly described above. The battery pack 100 is disposed on a base plate 10 and fixed within a frame. The battery assembly described above can prevent secondary damage to the battery pack 100 caused by expansion of the battery pack 100.

[0051] There may be one or more battery packs 100. When there are multiple battery packs 100, each battery pack 100 is secured by two enclosure members 20 and two securing members 30. Multiple battery packs 100 may be supported together on the same base plate 10 or separately on independent base plates 10. This embodiment illustrates the case where there are two battery packs 100. The two battery packs 100 are spaced apart along a first direction and are supported together on the same base plate 10.

[0052] An embodiment of the present invention further provides an electrical device, comprising the battery pack as described above.

[0053] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A battery device, characterized in that include: a bottom plate (10) for supporting the battery pack (100); Two enclosure members (20) are respectively arranged at two ends of the bottom plate (10) along the first direction; Two fixing members (30) are spaced apart and distributed along a second direction, the second direction being perpendicular to the first direction. The two fixing members (30) are both connected between the two enclosure members (20) and form a frame with the two enclosure members (20), the frame being used to fix the battery pack (100); the fixing member (30) comprises a first contact portion (31), a protruding portion (33) and a second contact portion (32); the first contact portion (31), the protruding portion (33) and the second contact portion (32) are distributed along a third direction, the third direction being perpendicular to both the first direction and the second direction; the cross section of the protruding portion (33) is U-shaped or arc-shaped; the first contact portion (31) and the second contact portion (32) are respectively connected to two ends of the protruding portion (33); the first contact portion (31) and the second contact portion (32) are both capable of contacting the battery pack (100); the protruding portion (33) protrudes toward a side away from the battery pack (100) along the second direction.

2. The battery device according to claim 1, wherein: The first contact portion (31), the raised portion (33) and the second contact portion (32) all pass through the fixing member (30) along the first direction.

3. The battery device according to claim 1, wherein: The protrusion height of the protrusion (33) relative to the first contact portion (31) and the second contact portion (32) ranges from 0.1 mm to 3 mm.

4. The battery device according to claim 3, characterized in that The thickness of the first contact portion (31), the raised portion (33) and the second contact portion (32) are all in the range of 1 mm to 1.5 mm, and the raised height of the raised portion (33) relative to the first contact portion (31) and the second contact portion (32) is in the range of 1 mm to 3 mm.

5. The battery device according to claim 1, wherein: The ratio of the width of the first contact portion (31) to the height of the battery pack (100) is in the range of 1 / 20-1 / 8, and the ratio of the width of the second contact portion (32) to the height of the battery pack (100) is in the range of 1 / 20-1 / 8.

6. The battery device according to claim 1, wherein: The height of the fixing member (30) from the bottom plate (10) is within a range of 1 / 2-3 / 4 of the height of the battery pack (100), and the ratio of the width of the first contact portion (31) and the second contact portion (32) to the height of the battery pack (100) is within a range of 1 / 20-1 / 8.

7. The battery device according to claim 4, characterized in that The ratio of the width of the first contact portion (31) and the second contact portion (32) to the height of the battery pack (100) is in the range of 1 / 20-1 / 8.

8. The battery device according to claim 1, wherein: The width of the fixing member (30) ranges from 50 mm to 60 mm.

9. The battery device according to claim 1, wherein: The top of the enclosure member (20) is flush with the top of the fixing member (30).

10. The battery device according to claim 1, wherein: The enclosure (20) and the base plate (10) are fixedly connected via a mounting seat (40).

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