Battery device

Abstract

The utility model relates to the technical field of batteries, and provides a battery device, the battery device comprises a battery box, a battery pack and a pressing piece, the battery box comprises a bottom plate and an edge beam, and the bottom plate and the edge beam form an accommodating space of the battery box; the battery pack is at least partially located in the accommodating space of the battery box, the battery pack comprises a battery unit and a fixing piece, the battery unit comprises a plurality of batteries, the battery unit and the bottom plate are bonded through glue, and the fixing piece is fixed to the end, facing the edge beam, of the battery unit and makes contact with the edge beam; the abutting piece abuts against the fixing piece and the edge beam and is used for preventing the fixing piece from moving towards the side away from the bottom plate. The battery device provided by the utility model can prevent the battery pack from moving towards one side far away from the bottom plate, so that the structural stability of the battery device can be improved.

Description

Technical Field

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

[0002] In the related art, the battery device includes a battery box and a battery pack, and the battery pack is located in the battery box. However, when the battery device is in motion or impact conditions, the battery pack is prone to move to the side away from the bottom plate of the battery device, thereby causing damage to the internal structure of the battery device.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] The utility model provides a battery device, which can solve the technical problem that a battery pack easily moves to a side away from a bottom plate.

[0005] The battery unit includes:

[0006] The battery box comprises a bottom plate and side beams, wherein the bottom plate and the side beams form a storage space for the battery box;

[0007] A battery pack is at least partially located in the accommodation space of the battery box, the battery pack includes a battery unit and a fixing member, the battery unit includes a plurality of batteries, the battery unit and the bottom plate are bonded by glue, the fixing member is fixed to an end of the battery unit facing the side beam, and the fixing member is in contact with the side beam;

[0008] The pressing piece is respectively in contact with the fixing piece and the side beam, and is used to prevent the fixing piece from moving to a side away from the bottom plate.

[0009] The utility model preliminarily fixes the battery pack by gluing the battery unit to the bottom plate and contacting the fixing member to the side beam. In addition, a pressing member is added to the battery device, and the pressing member abuts against the fixing member and the side beam respectively, and the pressing member can prevent the fixing member from moving away from the bottom plate, so that the arrangement can prevent the battery pack from moving away from the bottom plate.

[0010] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to better understand the present disclosure, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, related elements or components may have different arrangements as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each drawing.

[0012] in:

[0013] Figure 1 It is a structural schematic diagram of an exemplary embodiment of the battery device disclosed in the present invention;

[0014] Figure 2 A top view of an exemplary embodiment of a battery device disclosed herein;

[0015] Figure 3 for Figure 1 A partial enlarged view of area A in the battery device shown;

[0016] Figure 4 for Figure 1 A partial enlarged view of region B in the battery device shown;

[0017] Figure 5 for Figure 4 A cross-sectional view of the battery device shown along the dashed line DD;

[0018] Figure 6 for Figure 3 A schematic diagram of the structure of the pressing member in the battery device shown;

[0019] Figure 7 for Figure 4 A schematic diagram of the structure of the pressing member in the battery device shown;

[0020] Figure 8 It is a structural schematic diagram of a battery pack in an exemplary embodiment of the battery device disclosed in the present invention;

[0021] Fig. 9 for Figure 8 A partial enlarged view of the battery pack area CC is shown.

[0022] Description of reference numerals:

[0023] 1. Battery box; 11. Bottom plate; 12. Side beam; 121. First side beam; 13. Cross beam; 2. Battery pack; 21. Battery cell; 211. Battery; 22. Fixing member; 221. Insulating plate; 222. Raised portion; 3. Pressing member; 31. First pressing plate; 32. Second pressing plate. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the exemplary embodiments of the present disclosure to clearly and completely describe the technical solutions in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the present disclosure. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of the present disclosure.

[0025] In the description of the present disclosure, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0026] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0027] Further, in the description of the present disclosure, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present disclosure are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present disclosure. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to one or more "upper", "lower", or "inner", "outer" of another element, it can not only be directly connected to the "upper", "lower", "inner", "outer" of another element or elements, but can also be indirectly connected to the "upper", "lower", "inner", "outer" of another element or elements through an intermediate element.

[0028] like Figure 1-9 As shown, Figure 1 is a schematic structural diagram of an exemplary embodiment of a battery device disclosed herein. Figure 2 is a top view of an exemplary embodiment of a battery device disclosed herein, Figure 3 for Figure 1 A partial enlarged view of area A in the battery device shown, Figure 4 for Figure 1 A partial enlarged view of region B in the battery device shown, Figure 5 for Figure 4 The cross-sectional view of the battery device shown along the dotted line DD, Figure 6 for Figure 3 The schematic diagram of the structure of the pressing member in the battery device shown in FIG. Figure 7 for Figure 4 The schematic diagram of the structure of the pressing member in the battery device shown in FIG. Figure 8 is a schematic diagram of the structure of a battery pack in an exemplary embodiment of the battery device disclosed herein, Fig. 9 for Figure 8 A partial enlarged view of the battery pack area CC is shown.

[0029] like Figure 1-9 As shown, the battery device includes: a battery box 1, a battery pack 2, and a pressing member 3. The battery box 1 includes a bottom plate 11 and a side beam 12, and the bottom plate 11 and the side beam 12 form a storage space for the battery box 1; the battery pack 2 is at least partially located in the storage space of the battery box 1, and the battery pack 2 includes a battery cell 21 and a fixing member 22, and the battery cell 21 includes a plurality of batteries 211. The battery cell 21 and the bottom plate 11 are bonded by glue, and the fixing member 22 is fixed to one end of the battery cell 21 facing the side beam 12, and the fixing member 22 is in contact with the side beam 12; the pressing member 3 is in contact with the fixing member 22 and the side beam 12, respectively, and the pressing member 3 is used to prevent the fixing member 22 from moving to the side away from the bottom plate 11.

[0030] In this exemplary embodiment, the battery pack 2 is initially fixed by gluing the battery unit 21 to the bottom plate 11 and contacting the fixing member 22 to the side beam 12. In addition, a pressing member 3 is added to the battery device, and the pressing member 3 is in contact with the fixing member 22 and the side beam 12 respectively. The pressing member 3 can prevent the fixing member 22 from moving away from the bottom plate 11, so that the arrangement can prevent the battery pack 2 from moving away from the bottom plate 11.

[0031] In this exemplary embodiment, among the pressing member 3 and the fixing member 22 and the side beam 12 abutting against it, at least one of the pressing member 3 and the fixing member 22 and the side beam 12 is fixedly connected. Figure 1-9 As shown, the pressing member 3 can be fixedly connected to the side beam 12 abutting against it, and the fixing member 22 includes an abutting portion, and the pressing member 3 abuts against the side of the abutting portion away from the bottom plate 11. This arrangement can enable the pressing member 3 to limit the battery pack 2 on the side facing the bottom plate 11, thereby preventing the fixing member 22 from moving to the side away from the bottom plate 11.

[0032] It should be understood that in other exemplary embodiments, the pressing member 3 may also be fixed on the fixing member 22, and the pressing member 3 abuts against the end surface of the side beam 12 facing the bottom plate 11. In addition, the pressing member 3 may also be fixedly connected to the side beam 12 and the fixing member 22, respectively.

[0033] In this exemplary embodiment, Figure 1-9As shown, the fixing member 22 includes: an insulating plate 221 and a protruding portion 222. The insulating plate 221 is fixed to the side of the battery unit 21 facing the side beam 12; the protruding portion 222 is fixed to the side of the insulating plate 221 facing away from the battery unit 21; the protruding portion 222 forms the above-mentioned abutting portion. The protruding portion 222 can not only provide an abutting portion so that the pressing member 3 and the fixing member 22 have a better abutting effect, but also can improve the overall strength of the fixing member 22.

[0034] It should be understood that in other exemplary embodiments, the abutting portion may also be formed by other structures. For example, the abutting portion may be located at the upper end of the insulating plate 221 away from the bottom plate 11 .

[0035] In this exemplary embodiment, Figure 1-9 As shown, the pressure member 3 may include: a first pressure plate 31 and a second pressure plate 32. The first pressure plate 31 is fixed to the end face of the side beam 12 away from the bottom plate 11; the second pressure plate 32 intersects with the first pressure plate 31, and the second pressure plate 32 abuts against the side of the abutting portion away from the bottom plate 11. The first pressure plate 31 is fixed to the upper end face of the side beam 12 away from the bottom plate by means of bolts, adhesives, welding, etc. The pressure member 3 can provide a pre-tightening force to the fixing member 22 facing the side of the bottom plate 11 through the deformation of the first pressure plate 31. For example, when the first pressure plate 31 and the side beam 12 are connected by bolts, an interference fit of 0.5 mm can be added after the bolts are tightened, so that the pressure member 3 can continue to provide a pre-tightening force to the fixing member 22.

[0036] In this exemplary embodiment, Figure 1-9 As shown, the intersecting first pressing plate 31 and second pressing plate 32 may form an "L" shape. It should be understood that in other exemplary embodiments, the pressing member 3 may also be other "Z"-shaped structures.

[0037] In this exemplary embodiment, Figure 1-9 As shown, the second pressing plate 32 is at least partially located between the battery pack 2 and the side beam 12. That is, the second pressing plate 32 extends into the gap between the battery pack 2 and the side beam 12. The battery pack 2 and the side beam 12 can limit the second pressing plate 32 to a certain extent, thereby preventing the second pressing plate 32 from deviating from the pressing position against the fixing member 22.

[0038] In this exemplary embodiment, Figure 1-9 As shown, the battery device may include multiple battery packs, and the pressing member 3 may include multiple second pressing plates 32, which are arranged at intervals, and at least some of the second pressing plates 32 are respectively in contact with the contact portions in different battery packs 2. Figure 1-9 As shown, the pressing member 3 may include two second pressing plates 32. The two second pressing plates 32 may respectively abut against the abutting portions in two adjacent battery packs. This arrangement may improve the stability of the overall structure of the multiple battery packs.

[0039] In this exemplary embodiment, the pressing member 3 may be fixedly connected to at least one of the fixing member 22 and the side beam 12 by means of bolts, gluing, welding, or the like.

[0040] In this exemplary embodiment, the pressing member 3 can be fixedly connected to at least one of the fixing member 22 and the side beam 12 by at least two bolts. The plurality of bolts can prevent the pressing member 3 from rotating relative to the side beam 12 or the fixing member 22. Figure 1-9 As shown, the pressing member 3 can be fixedly connected to the side beam 12 by two bolts.

[0041] In this exemplary embodiment, Figure 1-9 As shown, the side beam 12 includes two opposite first side beams 121; the battery pack 2 includes two fixing members 22, and the two fixing members 22 are respectively located on the side of the battery unit 21 facing the two first side beams 121. The battery device may include a plurality of pressing members 3, and at least some of the different pressing members 3 may respectively abut against the two oppositely arranged first side beams 121 and fixing members 22. Different pressing members 3 may limit the battery pack at opposite ends of the battery pack, and this arrangement may further reduce the risk of the battery pack 2 moving toward the side away from the bottom plate 11.

[0042] In this exemplary embodiment, Figure 1-9 As shown, the battery 211 can be a quadrangular prism battery. The quadrangular prism battery mainly refers to a battery with a prism shape, but it is not strictly limited whether each side of the prism must be a straight line in the strict sense, and the corners between the sides are not necessarily right angles, and can be arc transitions. The multiple batteries 211 in the battery unit 21 are distributed in the thickness direction thereof, and the fixing member 22 can be located on one side of the largest side of the battery 211.

[0043] In this exemplary embodiment, Figure 1-9 As shown, the battery unit 21 includes a row of multiple batteries distributed along its thickness direction. It should be understood that in other exemplary embodiments, the battery unit may also include multiple rows of batteries distributed along its thickness direction. In addition, the fixing member 22 may also be located on one side of the smaller side of the battery.

[0044] In this exemplary embodiment, Figure 1-9 As shown, the contact surface between the pressing member 3 and the side beam 12 forms a first contact surface, and the contact surface between the pressing member 3 and the fixing member 22 forms a second contact surface. The first contact surface and the second contact surface are located in different planes, and the second contact surface is located on the side of the first contact surface facing the bottom plate 11. This arrangement can provide interference fit pressure for the abutment between the pressing member 3 and the side beam 12, thereby achieving a better pre-tightening effect.

[0045] In this exemplary embodiment, Figure 4 As shown, the battery device includes multiple battery packs 2, the side beam 12 includes a first side beam 121, the pressing member 3 abuts against the first side beam 121, and the battery box 1 also includes: a cross beam 13, the cross beam 13 and the first side beam 121 intersect, and the cross beam 13 is located between two adjacent battery packs 2; the pressing member 3 can abut against the fixing members 22 in the battery pack 2 located on both sides of the cross beam 13. This arrangement can improve the stability of the overall structure of multiple battery packs. Figure 3 , 4 As shown, Figure 4 The distance between the two second pressing plates 32 in the pressing member 3 across the cross beam 13 can be greater than Figure 3 There is no distance between the two second pressing plates 32 in the pressing member 3 that crosses the crossbeam 13.

[0046] In this exemplary embodiment, the fixing member 22 may be an insulating member, for example, the fixing member 22 may be made of plastic, rubber, mica, ceramic or other materials.

[0047] It should be noted that a battery includes a cell and an electrolyte, and a battery is the smallest unit capable of performing electrochemical reactions such as charge / discharge. A cell refers to a unit formed by winding or laminating a stacked portion, wherein the stacked portion includes a first pole sheet, a separator, and a second pole sheet. When the first pole sheet is a positive pole sheet, the second pole sheet is a negative pole sheet. The polarities of the first pole sheet and the second pole sheet can be interchanged. The first pole sheet and the second pole sheet are coated with an active material.

[0048] In this exemplary embodiment, the battery may be a lithium-ion battery. It should be understood that in other exemplary embodiments, the battery may also be a nickel-cadmium battery, a nickel-metal hydride battery, a lithium polymer battery, a sodium-ion battery, a solid-state battery, etc.

[0049] In other exemplary embodiments, the battery may be a cylindrical battery, and the battery case of the cylindrical battery may include two circular end surfaces and a curved surface located between the two circular end surfaces.

[0050] The battery can be a laminated battery, which is not only convenient to group, but also can be processed to obtain a longer battery. Specifically, the battery cell is a laminated battery cell, which has a first pole piece stacked on top of each other, a second pole piece with electrical properties opposite to the first pole piece, and a diaphragm sheet arranged between the first pole piece and the second pole piece, so that multiple pairs of first pole pieces and second pole pieces are stacked to form a laminated battery cell.

[0051] Alternatively, the battery may be a wound battery, that is, a first pole sheet, a second pole sheet with electrical properties opposite to the first pole sheet, and a diaphragm sheet arranged between the first pole sheet and the second pole sheet are wound to obtain a wound battery cell.

[0052] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing what is disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and embodiments are to be considered merely as exemplary, and the true scope and spirit of the present disclosure are indicated by the claims.

[0053] The drawings in the present disclosure only relate to the structures involved in the present disclosure, and other structures may refer to the usual design. In the absence of conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments. It should be understood by those of ordinary skill in the art that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, and should be included in the scope of the claims of the present disclosure.

[0054] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery device, characterized in that: The battery device comprises: A battery box (1) comprises a bottom plate (11) and side beams (12), wherein the bottom plate (11) and the side beams (12) form a storage space for the battery box (1); A battery pack (2), at least partly located in the accommodation space of the battery box (1), the battery pack (2) comprising a battery unit (21) and a fixing member (22), the battery unit (21) comprising a plurality of batteries (211), the battery unit (21) and the bottom plate (11) being bonded by adhesive, the fixing member (22) being fixed to an end of the battery unit (21) facing the side beam (12), and the fixing member (22) being in contact with the side beam (12); A pressing member (3), the pressing member (3) is in contact with the fixing member (22) and the side beam (12) respectively, and the pressing member (3) is used to prevent the fixing member (22) from moving to a side away from the bottom plate (11).

2. The battery device according to claim 1, characterized in that: Among the pressing member (3) and the fixing member (22) and the side beam (12) abutting against it, the pressing member (3) and at least one of the fixing member (22) and the side beam (12) are fixedly connected.

3. The battery device according to claim 2, characterized in that: The pressing member (3) is fixedly connected to the side beam (12) abutting against it, the fixing member (22) comprises an abutting portion, and the pressing member (3) abuts against a side of the abutting portion facing away from the bottom plate (11).

4. The battery device according to claim 3, characterized in that: The pressing member (3) comprises: A first pressing plate (31), the first pressing plate (31) being fixed to an end surface of the side beam (12) facing away from the bottom plate (11); A second pressing plate (32), the second pressing plate (32) intersects with the first pressing plate (31), and the second pressing plate (32) abuts against a side of the abutting portion facing away from the bottom plate (11).

5. The battery device according to claim 4, characterized in that: The second pressure plate (32) is at least partially located between the battery pack (2) and the side beam (12).

6. The battery device according to claim 4, characterized in that: The battery device comprises a plurality of the battery packs (2), the pressing member (3) comprises a plurality of the second pressing plates (32), the plurality of the second pressing plates (32) are arranged at intervals, and at least some of the second pressing plates (32) respectively abut against abutment portions in different battery packs (2).

7. The battery device according to claim 3, characterized in that: The fixing member (22) comprises: An insulating plate (221) fixed to a side of the battery unit (21) facing the side beam (12); The raised portion (222) is fixed to a side of the insulating plate (221) facing away from the battery unit (21), and the raised portion (222) forms the abutting portion.

8. The battery device according to any one of claims 1 to 7, characterized in that: The side beam (12) comprises two opposite first side beams (121); The battery pack (2) comprises two fixing members (22), and the two fixing members (22) are respectively located on one side of the battery unit (21) facing the two first side beams (121); The battery device comprises a plurality of the pressing members (3), and at least some of the pressing members (3) are respectively in contact with two groups of first side beams (121) and fixing members (22) that are arranged opposite to each other.

9. The battery device according to any one of claims 1 to 7, characterized in that: The contact surface between the pressing member (3) and the side beam (12) forms a first contact surface, and the contact surface between the pressing member (3) and the fixing member (22) forms a second contact surface. The first contact surface and the second contact surface are located in different planes, and the second contact surface is located on the side of the first contact surface facing the bottom plate (11).

10. The battery device according to any one of claims 1 to 7, characterized in that: The battery device comprises a plurality of battery packs (2), the side beam (12) comprises a first side beam (121), the pressing member (3) abuts against the first side beam (121), and the battery box (1) further comprises: A crossbeam (13), wherein the crossbeam (13) intersects with the first side beam (121), and the crossbeam (13) is located between two adjacent battery packs (2); The pressing member (3) is respectively in contact with the fixing members (22) in the battery pack (2) located on both sides of the crossbeam (13).

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