Battery cell module and battery pack

Abstract

The utility model provides a battery cell module and a battery pack, and relates to the field of battery cell structures. According to the battery cell module and the battery pack disclosed by the utility model, the battery cell bodies are arranged into the polygonal columnar structures, related electrical parts and the like of the battery cells are arranged at the outer side parts of the battery cell bodies, and then the brackets (so as to facilitate the arrangement of the battery pack) and the heating films are arranged outside the battery cell bodies, so that the battery cell module is formed by a plurality of battery cell bodies; and the battery cell module is arranged in the shell to form the battery pack. Therefore, compared with the existing square battery cell or cylindrical battery cell with the same specification, enough space can be naturally formed between the polygonal single battery cell and the shell so as to arrange the electrical part (namely, the electrical part of the single battery cell is positioned in the gap between the battery cell module and the shell), so that the risk of collision and extrusion of the electrical part is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery cell structure, in particular to a battery cell module and a battery pack. BACKGROUND

[0002] The existing battery pack is usually in a square structure or a cylindrical structure, that is, the battery cell and the shell are both formed in a square or a cylinder, thus, if it is desired to ensure that there is enough space between the battery cell and the shell for placing electrical components, etc., the size of the battery cell needs to be sacrificed, thereby resulting in a low capacity of the battery pack; if the space between the battery cell and the shell is set to be small, the electrical components, etc. are extremely prone to being squeezed and bumped. SUMMARY

[0003] Therefore, the present application aims to provide a battery cell module and a battery pack to solve the problem that the existing square battery cell or cylindrical battery cell cannot balance its own capacity and the size of the gap between the battery cell and the shell.

[0004] To achieve the above-mentioned purpose, the first aspect of the present application provides a battery cell module, wherein the battery cell module comprises:

[0005] one or more battery cell bodies, the battery cell bodies being formed in a polygonal columnar structure;

[0006] a support assembly corresponding to the battery cell bodies;

[0007] a heating film arranged in close contact with the battery cell bodies;

[0008] When the battery cell bodies, the support assembly and the heating film are assembled correspondingly, the electrical components of the battery cell module are located on the outer side of the battery cell bodies.

[0009] Preferably, the support assembly comprises a support body corresponding to the battery cell bodies, the support body being formed in a polygonal frame structure corresponding to the battery cell bodies; when the battery cell bodies are connected to the support body correspondingly, the support body is sleeved on the outer side wall of the battery cell bodies.

[0010] A support leg is formed at the edge of the support body.

[0011] Preferably, a gap is formed between the outer side wall of the battery cell body and the inner side wall of the support body, and the gap is filled with structural adhesive; or the battery cell body and the support body are in interference fit.

[0012] Preferably, a positive output pole and a negative output pole are arranged on the first side of the battery cell body; when the battery cell body is connected to the support body correspondingly, the positive output pole and the negative output pole are bent and arranged in close contact with the outer side wall of the first side of the support body.

[0013] Preferably, the heating film is arranged in contact with at least one of the two end faces of the battery core body.

[0014] Preferably, the side edge of the heating film is provided with a low-pressure plug, and when the battery core body, the support body and the heating film are assembled correspondingly, the low-pressure plug is in contact with the outer side wall of the second side portion of the support body.

[0015] Preferably, when the number of the battery core bodies is multiple, the multiple battery core bodies are sequentially stacked to form a combined body.

[0016] Preferably, the bracket assembly further comprises a partition plate, and the partition plate is arranged between any two adjacent battery core bodies in the stacking direction of the battery core bodies.

[0017] Preferably, the bracket assembly further comprises an end plate and a connecting plate, the end plate is located at both ends of the extension direction of the combined body, and the partition plate is arranged between the end plate and the combined body; the connecting plate is arranged on the outer side portion of the combined body, and both ends of the connecting plate are respectively screwed with two end plates.

[0018] According to the second aspect of the utility model, a battery pack is provided, wherein the battery pack is provided with the battery core module as described above; the battery pack further comprises a shell, and the shell is formed in a cylindrical structure; when the battery core module and the shell are assembled correspondingly, the gap between the battery core module and the shell is filled with a buffer and thermal insulation material.

[0019] According to the battery core module and the battery pack of the utility model, the battery core body is arranged in a polygonal columnar structure, the related electrical components of the battery core are arranged on the outer side portion of the battery core body, the bracket is arranged outside the battery core body (for the arrangement of the battery pack), and the heating film is arranged, the single battery core as described above is combined to form the battery core module, and the battery core module is arranged in the shell to form the battery pack. Thus, compared with the existing square battery core or cylindrical battery core of the same specification, the polygonal single battery core in the application can naturally form sufficient space between the battery core and the shell to arrange the electrical components (i.e., the electrical components of the single battery core are arranged in the gap between the battery core module and the shell), thereby effectively reducing the risk of collision and extrusion of the electrical components.

[0020] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 is an exploded schematic view of a multi-edge single cell according to an embodiment of the present application;

[0023] Figure 2 is an exploded schematic view of a cell module according to an embodiment of the present application;

[0024] Figure 3 is a cross-sectional view of a battery pack according to an embodiment of the present application.

[0025] Icon: 10 - cell body; 11 - support body; 12 - support leg; 13 - heating film; 14 - low-voltage plug-in; 15 - positive output pole; 16 - negative output pole; 2 - cell module; 20 - combined body; 21 - partition plate; 22 - end plate; 23 - connecting plate; 3 - battery pack; 30 - shell. DETAILED DESCRIPTION

[0026] The following detailed description is provided to help the reader obtain a complete understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents can be apparent to those skilled in the art after understanding the disclosure of the present application. For example, the order of the operations described herein is merely an example, and is not limited to the order set forth herein, and changes can be made that will be apparent to those skilled in the art after understanding the disclosure of the present application, except for operations that must occur in a specific order. In addition, the description of features known in the art can be omitted in order to improve clarity and brevity.

[0027] The features described herein can be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to show some of the many ways in which the methods, devices and / or systems described herein can be implemented, which will be apparent to those skilled in the art after understanding the disclosure of the present application.

[0028] Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on", "directly connected to", "directly coupled to", "directly adjacent to", "directly on top of", or "directly covering" another element, there are no other elements interposed therebetween.

[0029] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0030] Although terms such as "first" and "second" and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, the first component, assembly, region, layer or section referred to in the examples described herein could also be termed a second component, assembly, region, layer or section, without departing from the teachings of the examples.

[0031] For ease of description, spatial relationship terms, such as "on", "upper", "beneath", and "lower", can be used herein to describe the orientation of one element relative to another element as illustrated in the figures. Such spatial relationship terms can be intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, a component described as relative to another component on the "upper" side of another component would then be oriented on the "lower" side of that component. Accordingly, the term "on" encompasses both an "on" and "under" orientation in accordance with how the device is oriented in space. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatial relationship terms used herein interpreted accordingly.

[0032] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has" are listed means the stated features, numbers, operations, components, elements, and / or combinations thereof are present, but do not preclude the presence or addition of one or more other features, numbers, operations, components, elements, and / or combinations thereof.

[0033] Variations in the shapes illustrated in the drawings can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in shapes that occur during manufacturing.

[0034] Features of the examples described herein can be combined with one another in a variety of ways. Furthermore, although the examples described herein have a variety of configurations, other configurations are possible in accordance with the disclosure herein, as will be apparent upon consideration of the specification as a whole.

[0035] According to a first aspect of the present application, an electric core module is provided, which comprises an electric core body 10, a support assembly, and a heating film 13. When the electric core body 10, the support assembly, and the heating film 13 are correspondingly assembled, the electrical components of the electric core module 2 are located on the outer side of the electric core body 10. In the following, the specific structures of the above-mentioned parts of the electric core module according to the present application will be described in detail.

[0036] In the present embodiment, as shown in Figure 1 The electric core body 10 is formed as a regular hexagonal columnar structure (the electric core body 10 can also be provided as, for example, a heptagon or an octagon, as long as the technical effects described below can be achieved), which is formed with six outer side portions. Correspondingly, the support assembly comprises a support body 11, which corresponds to the electric core body 10 one-to-one and is formed as a regular hexagonal frame-shaped structure corresponding to the electric core body 10. When the electric core body 10 is connected with the support body 11, the support body 11 is sleeved on the outer side wall of the electric core body 10. By providing the support body 11, a supporting and protecting effect can be achieved on the electric core body 10. Further, the electric core body 10 can be formed in clearance fit with the support body 11, i.e., a gap is formed between the outer side wall of the electric core body 10 and the inner side wall of the support body 11, and then a structural adhesive is filled in the gap to stably connect the electric core body 10 with the support body 11. Alternatively, the electric core body 10 can be formed in interference fit with the support body 11 to ensure the stable connection of the electric core body 10 with the support body 11.

[0037] Further, as shown in Figure 1As shown, the first side of the electric core body 10 is provided with a positive output pole 15 and a negative output pole 16; when the electric core body 10 is connected with the support body 11, the positive output pole 15 and the negative output pole 16 are bent inward and are attached to the outer side wall of the first side of the support body 11. That is, in order to facilitate the assembly of the support body 11 and the electric core body 10, the positive output pole 15 and the negative output pole 16 extend along the axis direction of the electric core body 10 before the assembly of the two; and when the support body 11 and the electric core body 10 are assembled, the positive output pole 15 and the negative output pole 16 are bent, so as to further improve the tightness of the connection between the electric core body 10 and the support body 11.

[0038] In addition, the (outer) edge of the support body 11 is also provided with a support leg 12, so as to facilitate the connection between the electric core module 2 and the shell 30; the specific structure of the support leg 12 is not limited, for example, the support leg 12 in the embodiment is formed as a U-shaped structure, that is, each support leg 12 has two connecting surfaces, as long as the above technical effects can be achieved.

[0039] In the embodiment, as shown in Figure 1 The heating film 13 is attached to the two end faces of the electric core body 10 along the axis direction of the electric core body 10 (by adhesion). The heating film 13 is formed as a regular hexagon structure corresponding to the end face of the electric core body 10. Further, the side of each heating film 13 is provided with a low-voltage plug 14, which is perpendicular to the heating film 13, so that when the electric core body 10, the support body 11 and the heating film 13 are assembled correspondingly, the low-voltage plug 14 can be attached to the outer side wall of the second side of the support body 11.

[0040] It should be noted that in the electric core module 2 in the embodiment, the number of electric core bodies 10 can be one or more. When the number of electric core bodies 10 is one, the heating film 13 is arranged at both ends of the electric core body (as shown in Figure 1 When the number of electric core bodies 10 is more (as shown in Figure 2 The plurality of electric core bodies 10 are stacked, and one heating film 13 can be shared between any two adjacent electric core bodies 10. Further, the plurality of electric core bodies 10 are sequentially stacked to form a combined body 20 (the extension direction of the combined body 20 is the stacking direction of the plurality of electric core bodies 10, and this direction is also the axis direction of each electric core body 10). Along the stacking direction of the plurality of electric core bodies 10, a partition plate 21 is arranged between any two adjacent electric core bodies 10, and the partition plate 21 is adhered to the heating film 13 (away from the end face of the electric core body 10), so as to ensure the stability of the overall structure of the electric core module 2.

[0041] In addition, the support assembly further comprises end plates 22 and connecting plates 23, the end plates 22 are located at both ends of the extension direction of the combination 20, and the end plates 22 are also provided with the partition plates 21 (the partition plates 21 are bonded with the corresponding heating films 13 and the end plates 22) between the combination 20; the connecting plates 23 are arranged on the outer side of the combination 20 (that is, the connecting plates 23 are arranged on the outer side of the support body 11), and both ends of the extension direction of the connecting plates 23 are respectively screwed with the two end plates 22. Through the arrangement of the connecting plates 23 and the end plates 22, the strength and rigidity of the overall structure of the battery cell module 2 can be effectively ensured.

[0042] It should be noted that only part of the outer side of the combination 20 is provided with the connecting plate 23, for example, in the embodiment, as shown in Figure 2 and Figure 3 indicated, the combination 20 also forms six outer sides (corresponding to the battery cell body 10), and the first side provided with the output pole and the second side provided with the low-voltage plug-in 14 of the combination 20 are not provided with the connecting plate 23, so that the output pole and the low-voltage plug-in 14 are connected with other electrical components.

[0043] According to the battery cell module of the utility model, after being made into a battery pack 3, there is enough space between the battery cell module and the shell 30 of the battery pack 3, so that the electrical components (that is, the positive output pole 15, the negative output pole 16 and the low-voltage plug-in 14 and the like) can be arranged, and the risk of the electrical components being bumped and pressed is effectively reduced.

[0044] According to the second aspect of the utility model, a battery pack is provided, as shown in Figure 3 indicated, the battery pack 3 is provided with the battery cell module 2 as described above; in addition, the battery pack 3 further comprises a shell 30, and the shell 30 in the embodiment is formed in a cylindrical structure; when the battery cell module 2 is assembled with the shell 30, the support leg 12 of the support body 11 is connected with the inner wall of the shell 30, so as to ensure the stability of the structure of the battery pack 3, and based on the structural advantages of the polygonal battery cell, a multi-azimuth angle force transmission and bearing structure is formed between the support leg 12 and the shell 30, so as to effectively ensure the structural rigidity of the battery pack 3.

[0045] It should be noted that in the battery pack 3, the bottom is the most vulnerable part to impact, followed by the left end and the right end, based on this, as shown in Figure 3 indicated, in the embodiment, the first side and the second side of the battery cell body 10 are arranged at the upper left and the upper right of the battery pack 3 respectively, so that the high-voltage busbar, the low-voltage wire harness and the like can be stably arranged. Further, the gap between the battery cell module 2 and the shell 30 can be filled with a buffering and heat-insulating material, so as to further improve the use safety of the battery cell.

[0046] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any skilled person in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, within the technical scope disclosed by the present application. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electric cell module, characterized by comprising: The battery cell module comprises: one or more battery cell bodies, which are formed into polygonal columnar structures; a support assembly corresponding to the battery cell bodies; a heating film corresponding to the battery cell bodies; when the battery cell bodies, the support assembly and the heating film are assembled, the electrical components of the battery cell module are located on the outer side of the battery cell bodies.

2. The battery cell module of claim 1, wherein, The support assembly comprises a support body corresponding to each battery cell body, which is formed into a polygonal frame structure corresponding to the battery cell body; when the battery cell body and the support body are connected, the support body is sleeved on the outer side wall of the battery cell body. The edge of the support body is provided with a support leg.

3. The battery cell module of claim 2, wherein, The outer side wall of the battery cell body and the inner side wall of the support body are provided with a gap, which is filled with structural glue; or the battery cell body and the support body are in interference fit.

4. The battery cell module of claim 2, wherein, The first side of the battery cell body is provided with a positive output pole and a negative output pole; when the battery cell body and the support body are connected, the positive output pole and the negative output pole are bent and attached to the outer side wall of the first side of the support body.

5. The battery cell module of claim 2, wherein, The heating film is attached to at least one of the two end faces of the battery cell body.

6. The battery cell module of claim 5, wherein, The side of the heating film is provided with a low-voltage plug, which is attached to the outer side wall of the second side of the support body when the battery cell body, the support body and the heating film are assembled.

7. The battery cell module of claim 6, wherein, When the number of battery cell bodies is more than one, the battery cell bodies are sequentially stacked to form a combined body.

8. The battery cell module of claim 7, wherein, The support assembly further comprises a partition plate, which is arranged between any two adjacent battery cell bodies in the stacking direction of the battery cell bodies.

9. The battery cell module of claim 8, wherein, The support assembly further comprises an end plate and a connecting plate, the end plate is located at both ends of the extension direction of the combined body, and the partition plate is also arranged between the end plate and the combined body; the connecting plate is arranged on the outer side of the combined body, and both ends of the connecting plate are respectively screwed with two end plates.

10. A battery pack, characterized by, The battery pack is provided with the battery cell module according to any one of claims 1 to 9; the battery pack further comprises a shell, which is formed into a cylindrical structure; when the battery cell module and the shell are assembled, the gap between the battery cell module and the shell is filled with a buffer and thermal insulation material.

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