Battery box body and battery device

Abstract

The utility model relates to the technical field of batteries, and provides a battery box body and a battery device, the battery box body comprises a basin-shaped main body, a bottom protection plate and a side beam, the basin-shaped main body comprises a bottom wall and a side wall, the bottom wall and the side wall form an accommodating space, and at least part of an included angle between the bottom wall and the side wall is greater than 90 degrees; the bottom protection plate is located on the side, away from the containing space, of the bottom wall and integrally and fixedly connected with the bottom wall. The side beams are located on the sides, away from the containing space, of the side walls. Wherein the basin-shaped main body and the bottom protection plate are fixedly connected with the side beams respectively. The battery box body can be conveniently hung, and meanwhile, batteries can be conveniently put into the box.

Description

Technical Field

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

[0002] In the related art, the battery box is not easy to hang on a target object such as a vehicle, and it is difficult to put the battery into the box.

[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 box body, which can solve the technical problems of difficulty in putting batteries into the box and difficulty in hanging the box body.

[0005] The battery box includes:

[0006] A basin-shaped body, the basin-shaped body comprising a bottom wall and a side wall, the bottom wall and the side wall forming a receiving space, and at least a portion of the bottom wall and the side wall having an included angle greater than 90°;

[0007] A bottom guard plate is located on a side of the bottom wall away from the accommodation space, and the bottom guard plate and the bottom wall are integrally fixedly connected;

[0008] A side beam, located on a side of the side wall facing away from the accommodation space;

[0009] Among them, the basin-shaped main body and the bottom guard plate are fixedly connected to the side beams respectively.

[0010] On the one hand, the utility model sets at least part of the angle between the bottom wall and the side wall to be greater than 90°, so that the basin-shaped body can have an outwardly expanded opening shape, which can facilitate the assembly of the battery into the battery box. On the other hand, the utility model is hoisted by the side beam, so that the battery box can be flexibly assembled by configuring different side beams.

[0011] The utility model also provides a battery device, which comprises the battery box body mentioned above.

[0012] 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

[0013] 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.

[0014] in:

[0015] Figure 1 It is a structural schematic diagram of an exemplary embodiment of a battery box disclosed in the present invention;

[0016] Figure 2 This is a schematic diagram of the assembly structure of an exemplary embodiment of a battery box disclosed in the present invention;

[0017] Figure 3 A cross-sectional view of an exemplary embodiment of a battery case of the present disclosure.

[0018] Description of reference numerals:

[0019] 1. Basin-shaped body; 11. Bottom wall; 12. Side wall; 13. Flanged edge; 2. Accommodating space; 3. Bottom guard plate; 4. Side beam; 41. First beam wall; 42. Second beam wall; 43. Third beam wall; 44. Lifting hole; 5. Heat exchange plate; 52. Second side plate; 521. Groove. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] like Figure 1-3 As shown, Figure 1 This is a schematic structural diagram of an exemplary embodiment of a battery box disclosed in the present invention. Figure 2 This is a schematic diagram of the assembly structure of an exemplary embodiment of a battery box disclosed in the present invention. Figure 3 A cross-sectional view of an exemplary embodiment of a battery case of the present disclosure.

[0025] The battery box includes: a basin-shaped main body 1, a bottom guard plate 3, and a side beam 4. The basin-shaped main body 1 includes a bottom wall 11 and a side wall 12. The bottom wall 11 and the side wall 12 form a receiving space 2, and at least part of the angle between the bottom wall 11 and the side wall 12 is greater than 90°; the bottom guard plate 3 is located on the side of the bottom wall 11 away from the receiving space 2, and the bottom guard plate 3 and the bottom wall 11 are fixedly connected as a whole; the side beam 4 is located on the side of the side wall 12 away from the receiving space 2; wherein, the basin-shaped main body 1 and the bottom guard plate 3 are fixedly connected to the side beam 4 respectively.

[0026] On the one hand, the exemplary embodiment sets the angle between the bottom wall and the side wall to be greater than 90°, so that the basin-shaped body 1 has an outwardly expanded opening structure, which can facilitate the assembly of the battery into the battery box. On the other hand, the exemplary embodiment is hoisted by the side beam, so that the battery box can be flexibly assembled by configuring different side beams.

[0027] It should be noted that the bottom guard plate 3 and the bottom wall 11 are integrally fixedly connected, which can be understood as the bottom guard plate 3 and the bottom wall 11 are fixed outside the side beam 4, and the bottom guard plate 3 and the bottom wall 11 themselves are also fixedly connected to each other. For example, the bottom guard plate 3 and the bottom wall 11 can be fixedly connected by bolts, welding, etc.

[0028] In this exemplary embodiment, Figure 1-3 As shown, the battery box also includes: a heat exchange plate 5, the heat exchange plate 5 includes a first side plate and a second side plate 52 arranged opposite to each other, a flow channel is formed between the first side plate and the second side plate 52, and the bottom wall 11 is reused as the first side plate. In this exemplary embodiment, the bottom wall 11 is reused as a side plate of the heat exchange plate, and this arrangement can simplify the battery box structure and reduce the weight of the battery box.

[0029] In this exemplary embodiment, the second side plate 52 and the bottom wall 11 may be fixedly connected by brazing, bolts, or the like.

[0030] In this exemplary embodiment, Figure 1-3 As shown, a groove 521 is formed on the side of the second side plate 52 facing the first side plate, and the groove 521 is used to form a flow channel. The second side plate 52 is located on the side of the bottom wall 11 away from the accommodating space 2. It should be understood that in other exemplary embodiments, a groove for forming a flow channel may also be formed on the side of the bottom wall 11 facing the second side plate 52, and the second side plate 52 may not form a groove structure. In addition, the second side plate 52 may also be located in the accommodating space 2.

[0031] It should be noted that the heat-conducting medium can circulate in the flow channel to achieve heat exchange with the battery. In this exemplary embodiment, the heat exchange plate can both cool down the battery and heat the battery. For example, when the temperature of the battery is high, the heat exchange plate can cool the battery to improve the safety and stability of the battery pack; when the battery is in an extremely cold environment and the temperature is too low to affect normal use, the heat exchange plate can heat the battery so that the battery pack can adapt to more usage environments.

[0032] In this exemplary embodiment, the bottom wall 11, the second side plate 52, and the bottom guard plate 3 can be fixedly connected as a whole. For example, the bottom wall 11, the second side plate 52, and the bottom guard plate 3 can be fixed by bolts passing through the three. The bottom wall 11, the second side plate 52, and the bottom guard plate 3 can also be welded in sequence by welding.

[0033] In this exemplary embodiment, Figure 1-3As shown, the side beam 4 may include: a first beam wall 41, a second beam wall 42, and a third beam wall 43. The second beam wall 42 and the first beam wall 41 are arranged oppositely. The first beam wall 41 is located on one side of the second beam wall 42 in the first direction X, and the first direction X is the direction in which the bottom wall 11 faces the accommodation space 2; the third beam wall 43 is connected between the first beam wall 41 and the second beam wall 42, and the third beam wall 43 and the side wall 12 are arranged oppositely. The angle α1 between the side wall 12 and the bottom wall 11 arranged opposite to the third beam wall 43 is greater than 90°; the angle α2 between the first beam wall 41 and the third beam wall 43 is greater than 90°, and the angle α3 between the second beam wall 42 and the third beam wall 43 is less than 90°. In this exemplary embodiment, the side beam 4 is arranged as a trapezoidal structure matching the side wall 12. This arrangement can improve the fit between the third beam wall 43 and the side wall 12, thereby improving the support strength of the side beam 4 to the basin-shaped body 1. α2 can be equal to α1.

[0034] In this exemplary embodiment, Figure 1-3 As shown, the basin-shaped body 1 further includes: a flange 13, the flange 13 is connected to one end of the side wall 12 away from the bottom wall 11, the flange 13 is located on one side of the side beam 4 in the first direction X, the first direction X is the direction in which the bottom wall 11 faces the accommodating space 2, and the flange 13 is fixedly connected to the side beam 4. The flange 13 can further increase the connection strength between the side beam 4 and the basin-shaped body 1. The flange 13 and the side beam 4 can be fixedly connected by welding, bolts, etc.

[0035] In this exemplary embodiment, Figure 1-3 As shown, the side beam 4 is provided with a hoisting hole 44. The side beam 4 can be conveniently fixedly connected to a target structure such as a vehicle by using the hoisting hole 44. For example, the side beam 4 can be bolted to the target structure by using the hoisting hole 44. This setting can improve the assembly efficiency of the battery box without affecting other components of the battery box, thereby saving mold opening costs.

[0036] In this exemplary embodiment, Figure 1-3 As shown, at least part of the edge of the bottom guard plate 3 is in contact with and fixedly connected to the side beam 4. In this exemplary embodiment, all edges of the bottom guard plate 3 may be in contact with and fixedly connected to the side beam 4. The edge of the bottom guard plate 3 and the side beam 4 may be fixedly connected by bolts, welding, or the like.

[0037] In this exemplary embodiment, Figure 1-3 As shown, the basin-shaped body 1 is an integrally formed stamping part. The integrally formed basin-shaped body 1 not only has high production efficiency, but also has high strength and high sealing effect.

[0038] In this exemplary embodiment, Figure 1-3As shown, at least a portion of the included angle between the bottom wall 11 and the side wall 12 is greater than 90° and less than or equal to 150°. For example, at least a portion of the included angle between the bottom wall 11 and the side wall 12 may be equal to 90°, 100°, 110°, 120°, 130°, 140°, 150°, etc. In this exemplary embodiment, the included angle between the bottom wall 11 and the side wall 12 is set within a suitable range, which can facilitate the assembly of the battery into the battery box and also prevent the side wall 12 from occupying too much space.

[0039] In this exemplary embodiment, Figure 1-3 As shown, the basin-shaped body 1, the second side plate 52, and the side beam 4 can be made of aluminum alloy, and the bottom guard plate 3 can be made of steel. The bottom guard plate 3 of the steel structure has high strength, thereby improving the protection effect of the heat exchange plate 5.

[0040] In this exemplary embodiment, the battery box may further include a cover plate, which may be buckled onto the opening of the basin-shaped body 1 .

[0041] This exemplary embodiment also provides a battery device, which includes the battery box and a battery. The battery can be located in the accommodation space 2.

[0042] 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.

[0043] 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.

[0044] In this exemplary embodiment, the battery can be a square battery, that is, the battery 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.

[0045] 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.

[0046] The battery may be a wound battery, that is, a first pole piece, a second pole piece having electrical properties opposite to the first pole piece, and a diaphragm sheet arranged between the first pole piece and the second pole piece are wound to obtain a winding core.

[0047] In this exemplary embodiment, the battery device is a battery module or a battery pack.

[0048] The battery module includes a plurality of batteries, which may be square batteries, and the battery module may further include end plates and side plates, which are used to fix the plurality of batteries. The batteries may be cylindrical batteries, which may be arranged on a support plate to form a battery module.

[0049] The battery pack includes a plurality of batteries and a box body, and the box body is used to fix the plurality of batteries.

[0050] It should be noted that the battery pack includes a battery, and the battery may be multiple, and the multiple batteries are arranged in the box. Among them, the multiple batteries can be installed in the box after forming a battery module. Alternatively, the multiple batteries can be directly arranged in the box, that is, there is no need to group the multiple batteries, and the box is used to fix the multiple batteries.

[0051] It should be noted that the battery device proposed in the utility model can be used in various electrical devices, such as mobile phones, portable devices, laptops, various vehicles (such as battery cars, electric cars, etc.), ships, spacecraft, electric toys and electric tools, etc. Further, the above-mentioned spacecraft may include, for example, airplanes, rockets, space shuttles and spacecrafts. The above-mentioned electric toys may include, for example, fixed or mobile electric toys (such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.). The above-mentioned electric tools may include, for example, metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, specifically, for example, electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers. It should be understood that in various possible embodiments that conform to the design concept of the utility model, the cylindrical battery or battery device proposed in the utility model is not limited to the above-described devices, but can also be applied to all devices using batteries. For the sake of simplicity, the various embodiments in this specification are described by taking vehicles as an example.

[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 box, characterized in that: The battery box comprises: A basin-shaped body (1), the basin-shaped body (1) comprising a bottom wall (11) and a side wall (12), the bottom wall (11) and the side wall (12) forming a receiving space (2), and at least a portion of the included angle between the bottom wall (11) and the side wall (12) being greater than 90°; A bottom guard plate (3) is located on a side of the bottom wall (11) away from the accommodating space (2), and the bottom guard plate (3) and the bottom wall (11) are integrally fixedly connected; A side beam (4) located on a side of the side wall (12) facing away from the accommodating space (2); Wherein, the basin-shaped main body (1) and the bottom guard plate (3) are respectively fixedly connected to the side beam (4).

2. The battery box according to claim 1, characterized in that: The battery box also includes: A heat exchange plate (5), the heat exchange plate (5) comprising a first side plate and a second side plate (52) arranged opposite to each other, a flow channel being formed between the first side plate and the second side plate (52), and the bottom wall (11) being reused as the first side plate.

3. The battery box according to claim 2, characterized in that: A groove (521) is formed on a side of the second side plate (52) facing the first side plate, and the groove (521) is used to form the flow channel. The second side plate (52) is located on a side of the bottom wall (11) facing away from the accommodating space (2).

4. The battery box according to claim 1, characterized in that: The side beam (4) comprises: a first beam wall (41); a second beam wall (42), the second beam wall (42) and the first beam wall (41) being arranged opposite to each other, the first beam wall (41) being located on one side of the second beam wall (42) in a first direction (X), the first direction (X) being the direction in which the bottom wall (11) faces the accommodating space (2); a third beam wall (43) connected between the first beam wall (41) and the second beam wall (42), the third beam wall (43) and the side wall (12) being arranged opposite to each other, and an angle α1 between the side wall (12) and the bottom wall (11) arranged opposite to the third beam wall (43) being greater than 90°; An included angle α2 between the first beam wall (41) and the third beam wall (43) is greater than 90°, and an included angle α3 between the second beam wall (42) and the third beam wall (43) is less than 90°.

5. The battery box according to claim 1, characterized in that: The basin-shaped body (1) further comprises: A flange (13) is connected to an end of the side wall (12) away from the bottom wall (11), the flange (13) is located on one side of the side beam (4) in a first direction (X), the first direction (X) being the direction in which the bottom wall (11) faces the accommodating space (2), and the flange (13) and the side beam (4) are fixedly connected.

6. The battery case according to any one of claims 1 to 5, characterized in that: The side beam (4) is provided with a hoisting hole (44).

7. The battery case according to any one of claims 1 to 5, characterized in that: At least part of the edge of the bottom guard plate (3) is in contact with and fixedly connected to the side beam (4).

8. The battery case according to any one of claims 1 to 5, characterized in that: The basin-shaped main body (1) is an integrally formed stamped part.

9. The battery case according to any one of claims 1 to 5, characterized in that: At least part of the included angle between the bottom wall (11) and the side wall (12) is greater than 90° and less than or equal to 150°.

10. A battery device, characterized in that: The battery device comprises the battery case according to any one of claims 1-9.

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