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 main box body, a lining piece and a heat exchange plate, the main box body comprises a bottom plate and an edge beam, the bottom plate and the edge beam form an accommodating part, and at least part of the accommodating part is used for accommodating a battery; the lining piece is arranged in the accommodating part, the lining piece is fixedly connected with the edge beam, and part of the accommodating part used for accommodating the battery is located on the side, away from the bottom plate, of the lining piece; the heat exchange plate is arranged in the accommodating part, and part of the accommodating part for accommodating the battery is positioned on one side, deviating from the bottom plate, of the heat exchange plate. The battery box body provided by the utility model has relatively high strength.

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 device includes a battery case and a battery located inside the battery case. However, due to the insufficient strength of the battery case, the battery and other structures inside the battery case are easily damaged.

[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 improve the technical problem of insufficient strength of the battery box body.

[0005] According to one aspect of the present disclosure, a battery box includes:

[0006] The main box body includes a bottom plate and side beams, wherein the bottom plate and the side beams form a receiving portion, at least a portion of which is used to receive the battery;

[0007] An inner lining member is arranged in the receiving portion, the inner lining member is fixedly connected to the side beam, and a portion of the receiving portion for receiving the battery is located on a side of the inner lining member away from the bottom plate;

[0008] The heat exchange plate is arranged in the accommodating portion, and a part of the accommodating portion for accommodating the battery is located on a side of the heat exchange plate away from the bottom plate.

[0009] The utility model adds an inner lining member inside the main box body, which is equivalent to increasing the thickness of the bottom plate of the main box body, so that this arrangement can improve the overall mode of the battery box body and increase the strength of the battery box body.

[0010] According to one aspect of the present disclosure, the utility model also provides a battery device, which includes the above-mentioned battery box.

[0011] 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

[0012] 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.

[0013] in:

[0014] Figure 1 It is a structural schematic diagram of an exemplary embodiment of a battery box disclosed in the present invention;

[0015] Figure 2 It is a schematic diagram of a partial assembly structure of an exemplary embodiment of a battery box disclosed in the present invention;

[0016] Figure 3 This is a schematic structural diagram of an inner lining member in an exemplary embodiment of a battery box disclosed in the present invention;

[0017] Figure 4 It is a structural schematic diagram of another exemplary embodiment of the battery box disclosed in the present invention;

[0018] Figure 5 It is a schematic diagram of a partial assembly structure of another exemplary embodiment of a battery box disclosed in the present invention;

[0019] Figure 6 for Figure 1 A partial cross-sectional view of the battery case along dashed line AA is shown.

[0020] Description of reference numerals:

[0021] 1. Main box body; 11. Bottom plate; 12. Side beam; 2. Lining member; 21. Through hole; 22. Lining body; 23. Module mounting part; 24. Side reinforcement beam; 3. Accommodating part; 4. Heat exchange plate; 5. Fixed beam. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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 a partial assembly structure of an exemplary embodiment of a battery box disclosed in the present invention. Figure 3 It is a schematic structural diagram of an inner lining member in an exemplary embodiment of a battery box disclosed in the present invention.

[0027] The battery box includes: a main box 1, a lining member 2, and a heat exchange plate 4. The main box 1 includes a bottom plate 11 and a side beam 12, the bottom plate 11 and the side beam 12 form a receiving portion 3, at least part of the receiving portion 3 is used to receive the battery; the lining member 2 is arranged in the receiving portion 3, the lining member 2 and the side beam 12 are fixedly connected, and part of the receiving portion 3 for receiving the battery is located on the side of the lining member 2 away from the bottom plate 11; the heat exchange plate 4 is arranged in the receiving portion 3, and part of the receiving portion 3 for receiving the battery is located on the side of the heat exchange plate 4 away from the bottom plate 11.

[0028] This exemplary embodiment adds an inner lining inside the main box body, which is equivalent to increasing the thickness of the bottom plate of the main box body. Therefore, this arrangement can improve the overall mode of the battery box body and increase the strength of the battery box body.

[0029] In this exemplary embodiment, the lining member 2 and the side beam 12 may be fixedly connected by bolts, welding or the like.

[0030] In this exemplary embodiment, the heat exchange plate 4 may be formed with a heat conduction channel, and the heat conduction medium may circulate in the heat conduction channel to achieve heat exchange with the battery. In this exemplary embodiment, the heat exchange plate 4 may both cool down the battery and heat the battery. For example, when the temperature of the battery is high, the heat exchange plate 4 may 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 4 may heat the battery so that the battery pack can adapt to more usage environments.

[0031] In this exemplary embodiment, Figure 1-3 As shown, the lining member 2 can be located between the heat exchange plate 4 and the bottom plate 11. The lining member 2 can not only increase the overall strength of the main box 1, but also protect the heat exchange plate 4 at the bottom of the battery box.

[0032] In this exemplary embodiment, Figure 1-3 As shown, the battery box may further include a fixed beam 5 , which may be located on a side of the heat exchange plate 4 away from the bottom plate 11 , and the fixed beam 5 may be fixed to the side beam 12 , thereby limiting the position of the heat exchange plate 4 .

[0033] It should be understood that in other exemplary embodiments, the lining member 2 may also be located at other positions in the receiving portion 3. Figure 4 , 5 As shown, Figure 4 is a schematic structural diagram of another exemplary embodiment of a battery box disclosed in the present invention, Figure 5 This is a schematic diagram of a partial assembly structure in another exemplary embodiment of the battery box disclosed in the present invention. The lining member 2 can also be located on the side of the heat exchange plate 4 away from the bottom plate 11. The lining member 2 can not only increase the strength of the main box 1, but also limit the heat exchange plate 4 to improve the structural stability of the heat exchange plate 4.

[0034] In this exemplary embodiment, Figure 4 , 5 As shown, a plurality of through holes 21 are formed on the lining member 2, and the battery can be arranged through the through holes 21. This arrangement can make the battery passing through the through holes 21 and the heat exchange plate 4 in close contact or direct contact, thereby improving the heat exchange efficiency between the heat exchange plate 4 and the battery. In addition, this arrangement can also reduce the weight of the lining member 2.

[0035] In this exemplary embodiment, Figure 1-5As shown, the lining member 2 may include: a lining body 22, a module mounting portion 23, and a side reinforcing beam 24. The lining body 22 and the bottom plate 11 are arranged opposite to each other; the module mounting portion 23 is connected to the lining body 22, and the module mounting portion 23 is fixed to the bottom plate 11; the side reinforcing beam 24 is connected to the edge of the lining body 22, and the side reinforcing beam 24 is located on the side of the lining body 22 away from the bottom plate 11, and the side reinforcing beam 24 and the side beam 12 are arranged opposite to each other and fixedly connected. The lining member 2 can be fixed to the bottom plate 11 more stably through the module mounting portion 23. The side reinforcing beam 24 can increase the strength of the side beam 12 on the main box body, thereby reducing the risk of the side beam 12 being damaged by collision.

[0036] In this exemplary embodiment, the module mounting portion 23 can be fixed to the bottom plate 11 by bolts or welding, and the side reinforcement beam 24 and the side beam 12 can also be fixedly connected by bolts or welding.

[0037] In this exemplary embodiment, Figure 1-5 As shown, the liner body 22 and the side reinforcement beam 24 can be integrally formed stamping parts. The integrally formed stamping parts have higher production efficiency and strength.

[0038] In this exemplary embodiment, Figure 3 As shown, the module mounting portion 23 and the lining body 22 may also be integrally formed stamping parts, and the module mounting portion 23 may be a convex rib connected to the lining body 22. Figure 5 As shown, the module mounting portion 23 and the lining body 22 can also be separately provided, and the module mounting portion 23 can be a mounting beam connected to the lining body 22, and the module mounting portion 23 and the lining body 22 can be fixedly connected by bolts, welding, etc. In other exemplary embodiments, Figure 3 The lining member 2 shown may also not be provided with the module mounting portion 23 .

[0039] In this exemplary embodiment, Figure 6 As shown, Figure 1 The battery case shown is a partial cross-sectional view along the dotted line AA. In the direction Z perpendicular to the bottom plate 11, the distance between the top of the liner body 22 and the bottom plate 11 of the side reinforcing beam 24 in the direction Z perpendicular to the bottom plate 11 is h1; in the direction Z perpendicular to the bottom plate 11, the distance between the top of the side beam 12 and the bottom plate 11 in the direction Z perpendicular to the bottom plate 11 is h2; h1 / h2 is greater than or equal to 1 / 2 and less than or equal to 1. For example, h1 / h2 can be equal to 1 / 2, 0.6, 0.7, 0.8, 0.9, 1, etc. This arrangement can ensure the reinforcing effect of the side reinforcing beam 24 on the side beam 12, and at the same time, the side reinforcing beam 24 will not occupy additional space of the battery case in the direction Z perpendicular to the bottom plate 11.

[0040] It should be noted that in Figure 4 In the battery case shown, h1 / h2 may also be greater than or equal to 1 / 2 and less than or equal to 1.

[0041] In this exemplary embodiment, Figure 1-5 As shown, the material of the lining member 2 is steel, and the thickness of the lining member 2 is 0.6mm-3.0mm. For example, the thickness of the lining member 2 can be equal to 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, etc.

[0042] In this exemplary embodiment, Figure 1-5 As shown, the tensile strength of the lining member 2 is ≥260Mpa, and / or the yield strength of the lining member 2 is ≥110Mpa. For example, the tensile strength of the lining member 2 can be 260Mpa, 270Mpa, 280Mpa, 290Mpa, 300Mpa, 310Mpa, 320Mpa, 330Mpa, 340Mpa, 350Mpa, 360Mpa, 370Mpa, 380Mpa, 390Mpa, 400Mpa, etc. The yield strength of the lining member 2 can be equal to 110Mpa, 120Mpa, 130Mpa, 140Mpa, 150Mpa, 160Mpa, 170Mpa, 180Mpa, 190Mpa, 200Mpa, etc. The lining member 2 with higher strength can further improve the overall strength of the battery case.

[0043] This exemplary embodiment also provides a battery device, which includes the above-mentioned battery case and a battery, wherein the battery is located in the receiving portion of the main case 1 .

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] In this exemplary embodiment, the battery device is a battery module or a battery pack.

[0050] 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.

[0051] The battery pack includes a plurality of batteries and a box body, and the box body is used to fix the plurality of batteries.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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: The main box body (1) comprises a bottom plate (11) and a side beam (12), wherein the bottom plate (11) and the side beam (12) form a receiving portion (3), and at least a part of the receiving portion (3) is used to receive a battery; An inner lining member (2) is arranged in the accommodating portion (3), the inner lining member (2) and the side beam (12) are fixedly connected, and a portion of the accommodating portion (3) for accommodating the battery is located on a side of the inner lining member (2) facing away from the bottom plate (11); The heat exchange plate (4) is arranged in the accommodating portion (3), and a portion of the accommodating portion (3) for accommodating the battery is located on a side of the heat exchange plate (4) facing away from the bottom plate (11).

2. The battery box according to claim 1, characterized in that: The lining member (2) is located on a side of the heat exchange plate (4) facing away from the bottom plate (11).

3. The battery box according to claim 2, characterized in that: A plurality of through holes (21) are formed on the lining member (2), and the batteries can be arranged through the through holes (21).

4. The battery box according to claim 1, characterized in that: The lining member (2) is located between the heat exchange plate (4) and the bottom plate (11).

5. The battery case according to any one of claims 1 to 4, characterized in that: The lining member (2) comprises: The lining body (22) is arranged opposite to the bottom plate (11); A module mounting portion (23) connected to the lining body (22), wherein the module mounting portion (23) is fixed on the bottom plate (11); A side reinforcing beam (24) is connected to the edge of the lining body (22), and the side reinforcing beam (24) is located on the side of the lining body (22) away from the bottom plate (11), and the side reinforcing beam (24) and the side beam (12) are arranged opposite to each other and fixedly connected.

6. The battery box according to claim 5, characterized in that: In a direction (Z) perpendicular to the bottom plate (11), the distance between the top end of the side reinforcing beam (24) away from the lining body (22) and the bottom plate (11) in the direction (Z) perpendicular to the bottom plate (11) is h1; In a direction (Z) perpendicular to the bottom plate (11), a distance between a top end of the side beam (12) away from the bottom plate (11) and the bottom plate (11) in a direction (Z) perpendicular to the bottom plate (11) is h2; h1 / h2 is greater than or equal to 1 / 2 and less than or equal to 1.

7. The battery box according to claim 5, characterized in that: The lining body (22) and the side reinforcement beam (24) are integrally formed stamped parts.

8. The battery case according to any one of claims 1 to 4, characterized in that: The material of the lining member (2) is steel, and the thickness of the lining member (2) is 0.6 mm-3.0 mm.

9. The battery case according to any one of claims 1 to 4, characterized in that: The tensile strength of the lining member (2) is ≥260 MPa, and / or the yield strength of the lining member (2) is ≥110 MPa.

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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