Battery module and battery pack with same

Abstract

The utility model provides a battery module and a battery pack with the battery module, the battery module comprises a plurality of battery cells, the plurality of battery cells are arranged at intervals along a first direction, and the battery cells are provided with connecting pieces; the protective parts are arranged between the adjacent battery cells, and the connecting parts of the adjacent battery cells are electrically connected in the protective parts. According to the battery module provided by the utility model, the protective parts are arranged, so that the use quantity of the protective parts can be reduced, the production cost of the battery module can be reduced, meanwhile, the connection steps can be reduced, and the assembly efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack manufacturing, and particularly relates to a battery module and a battery pack having the same. Background Art

[0002] In the existing battery module solutions, when adjacent battery cells are connected, a protective member needs to be provided on each battery cell, which increases the production cost of the battery module. At the same time, it is not conducive to improving the assembly efficiency of the battery module. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a battery module, which can reduce the production cost.

[0004] The utility model also provides a battery pack having the above battery module.

[0005] According to an embodiment of the utility model, the battery module includes: battery cells, a plurality of the battery cells are arranged at intervals in a first direction, and the battery cells are provided with connecting members; a protective member, the protective member is arranged between adjacent battery cells, and the connecting members of adjacent battery cells are electrically connected within the protective member.

[0006] According to the battery module of the utility model, by providing the protective member, the number of protective members used can be reduced, thereby reducing the production cost of the battery module. At the same time, the connection steps can also be reduced, improving the assembly efficiency.

[0007] According to some embodiments of the utility model, the protective member includes: a base, an installation cavity with one side open is formed within the base, and at least a part of the connecting member is arranged within the installation cavity; a cover body, the cover body covers the open side of the installation cavity.

[0008] According to some alternative embodiments of the utility model, the base includes: a first part, the first part extends in the first direction; a second part, the second part is arranged on one side of the first part in the thickness direction and is connected to the first part, and the second part is formed into a cylindrical shape with one side open along the circumferential direction of the second part, and the installation cavity is defined within the second part.

[0009] According to some alternative embodiments of the utility model, the battery module includes: a fastener, the fastener is arranged within the installation cavity, the connecting members located within the installation cavity are stacked, and the fastener sequentially passes through the connecting members.

[0010] According to some embodiments of the utility model, a fastening hole is provided on the bottom wall of the installation cavity, and one end of the fastener facing the installation cavity is screwed and connected to the fastening hole.

[0011] According to some embodiments of the present invention, the cover body includes: a body, the body is formed in a plate shape, and the body seals the fastener in the installation cavity.

[0012] According to some embodiments of the utility model, a convex portion is provided on the main body, the convex portion protrudes toward a side away from the installation cavity, an avoidance cavity is defined in the convex portion, and an end of the fastener away from the installation cavity is located in the avoidance cavity.

[0013] According to some embodiments of the present invention, one end of the connector is connected to the battery cell, and the other end of the connector is bent along the first direction toward the adjacent battery cell.

[0014] According to some embodiments of the present invention, a fixing hole is provided on the protective member, and a fixing member passes through the fixing hole to fix the protective member to the crossbeam.

[0015] A battery pack according to an embodiment of the second aspect of the utility model includes a battery module according to the first aspect of the utility model.

[0016] According to the battery pack of the utility model, by setting the battery module of the first embodiment and setting the protective parts, the number of protective parts used can be reduced, thereby reducing the production cost of the battery module. At the same time, the connection steps can be reduced and the assembly efficiency can be improved.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a battery module and a fixing member according to an embodiment of the utility model at an angle;

[0019] Figure 2 yes Figure 1 A schematic diagram of the battery module and the fixing member shown in another angle;

[0020] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 yes Figure 3 A schematic diagram of the protective member shown in the figure cooperating with the first connecting plate and the second connecting plate;

[0022] Figure 5 yes Figure 4 A schematic diagram of a partial structure of the protective member cooperating with the first connecting plate and the second connecting plate shown in ;

[0023] Figure 6 Yes Figure 4 Schematic diagram of the first connecting plate and the second connecting plate shown in

[0024] Reference numerals:

[0025] 100, battery module;

[0026] 10, battery cell; 11, connecting member; 12, connecting hole;

[0027] 20, protective member; 21, base; 211, first part; 2111, fixing hole; 212, second part; 2121, installation cavity; 2122, fastening hole; 22, cover; 221, body; 222, convex portion;

[0028] 30, fastener;

[0029] 200, fixing member. Detailed implementation manners

[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0031] Below, refer to the attached Figures 1-6 Describe the battery module 100 according to the embodiment of the present utility model.

[0032] Refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 , according to the embodiment of the present utility model, the battery module 100 includes: a plurality of battery cells 10 and a protective member 20. The plurality of battery cells 10 are arranged at intervals along the first direction (such as the left - right direction shown in Figure 1 ), the battery cell 10 is provided with a connecting member 11; the protective member 20 is disposed between adjacent battery cells 10, and the connecting members 11 of adjacent battery cells 10 are electrically connected within the protective member 20.

[0033] When connecting adjacent battery cells 10, the connecting members 11 of adjacent battery cells 10 are connected within the protective member 20, thereby realizing the electrical connection of the plurality of battery cells 10.

[0034] For the battery module 100 of the present utility model, a protective member 20 is provided. The connecting members 11 of adjacent battery cells 10 can be directly electrically connected within the protective member 20. Compared with the prior art solution where a protective member 20 needs to be provided on each battery cell 10 to achieve the connection between adjacent battery cells 10, the battery module 100 of the present application can reduce the number of protective members 20 used, thereby reducing the production cost of the battery module 100. At the same time, there is no need to connect adjacent battery cells 10 by means of an external copper bar, thus reducing the connection steps, improving the assembly efficiency, and also reducing the manufacturing cost of the battery module 100. Moreover, the occupied space of the protective member 20 can be reduced, thereby effectively improving the space utilization rate of the battery pack, and further improving the energy density of the battery pack.

[0035] For the battery module 100 according to an embodiment of the present utility model, a protective member 20 is provided, which can reduce the number of protective members 20 used, thereby reducing the production cost of the battery module 100. At the same time, the connection steps can also be reduced, and the assembly efficiency can be improved.

[0036] According to some embodiments of the present utility model, with reference to Figure 2 and Figure 3 , the protective member 20 includes: a base 21 and a cover 22. An installation cavity 2121 that is open on one side is formed in the base 21, and at least a part of the connecting member 11 is disposed in the installation cavity 2121; the cover 22 covers the open side of the installation cavity 2121. Thus, the open installation cavity 2121 can facilitate the connecting member 11 to extend into the installation cavity 2121 for electrical connection, thereby facilitating the connection of adjacent battery cells 10. At the same time, the cover 22 can cover the installation cavity 2121, thereby protecting the connecting member 11 in the installation cavity 2121, and further preventing other structures from contacting the connecting member 11 in the installation cavity 2121. Therefore, the use safety of the battery pack can be improved.

[0037] For example, as shown in Figure 2 and Figure 3 , a safety cavity that is open at the rear is formed in the base 21. One part of the connecting member 11 is connected to the battery cell 10, and the other part of the connecting member 11 extends into the installation cavity 2121.

[0038] According to some embodiments of the present utility model, with reference to Figure 3 and Figure 4 , the base 21 includes: a first part 211 and a second part 212. The first part 211 extends along a first direction (such as the left - right direction shown in Figure 3 ); the second part 212 is provided on one side of the first part 211 in the thickness direction (such as the up - down direction shown in Figure 3 ) and is connected to the first part 211. The second part 212 is formed into a cylindrical shape that is open on one side along the circumferential direction of the second part 212, and the installation cavity 2121 is defined within the second part 212.

[0039] In this way, the first part 211 can provide a layout position for the second part 212, so that the layout of the second part 212 can be facilitated. At the same time, an installation cavity 2121 is defined inside the second part 212, and there is no need to additionally process the installation cavity 2121, thus saving processing steps and improving production efficiency.

[0040] For example, as Figure 3 and Figure 4 shown, the first part 211 is a long strip-shaped plate extending in the left-right direction, the second part 212 is arranged on the upper side of the first part 211, the second part 212 is cylindrical with an open rear side, and an installation cavity 2121 is defined inside the second part 212.

[0041] According to some alternative embodiments of the present utility model, referring to Figure 3 , Figure 4 and Figure 6 , the battery module 100 includes: a fastener 30, the fastener 30 is arranged inside the installation cavity 2121, the connecting members 11 located inside the installation cavity 2121 are stacked, and the fastener 30 sequentially passes through the connecting members 11. Thus, the connecting members 11 inside the installation cavity 2121 are stacked, so that the fastener 30 can conveniently fix the connecting members 11 inside the installation cavity 2121. At the same time, the fixing structure using the fastener 30 is simple and the operation is convenient, thereby improving the assembly efficiency.

[0042] For example, as Figure 3 , Figure 4 and Figure 6 shown, the left end of the connecting member 11 of the left battery cell 10 is connected to the battery cell 10, the right end of the connecting member 11 of the left battery cell 10 extends to the right, the right end of the connecting member 11 of the right battery cell 10 is connected to the battery cell 10, the left end of the connecting member 11 of the right battery cell 10 extends to the left, and the connecting members 11 located inside the installation cavity 2121 are stacked in the front-rear direction, and the fastener 30 sequentially passes through the stacked connecting members 11 from the rear to the front.

[0043] Furthermore, as Figure 4 and Figure 6 shown, connection holes 12 are provided on the connecting members 11 inside the accommodation cavity. The connection holes 12 on the connecting members 11 near the rear side are long strip-shaped holes, and the connection holes 12 near the front side are circular holes. Therefore, the provision of the connection holes 12 can facilitate the passing of the fastener 30 through the connecting members 11, so that the fastener 30 can conveniently fix the connecting members 11. At the same time, by providing connection holes 12 of different shapes, the assembly requirements of adjacent battery cells 10 can be met, and thus the installation difficulty can be reduced.

[0044] According to some alternative embodiments of the present utility model, referring to Figure 2 and Figure 3, a fastening hole 2122 is provided on the bottom wall of the installation cavity 2121, and one end of the fastener 30 facing the installation cavity 2121 (such as Figure 3 the front end of the fastener 30 shown) is screwed to the fastening hole 2122. Thus, the fastener 30 is fixed to the fastening hole 2122, so that the fastener 30 can be prevented from shaking in the installation cavity 2121, and further, the reliability of the fastener 30 for fixing the connecting member 11 can be ensured. At the same time, the form of screw connection is simple and convenient to operate, so that the assembly efficiency can be improved.

[0045] For example, as shown in Figure 2 and Figure 3 , a fastening hole 2122 is formed in the bottom wall of the installation cavity 2121, and the front end of the fastener 30 is screwed to the fastening hole 2122. Preferably, the fastener 30 is a bolt, and the bolt has low cost and is convenient for batch use.

[0046] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 , the cover body 22 includes: a main body 221, the main body 221 is formed in a plate shape, and the main body 221 covers the fastener 30 in the installation cavity 2121. Thus, the contact between the liquid in the air and the fastener 30 can be avoided, so that the short circuit between the fastener 30 and the connecting member 11 can be effectively prevented, and further, the use safety of the battery pack can be ensured.

[0047] According to some alternative embodiments of the present invention, referring to Figure 2 and Figure 3 , a convex portion 222 is provided on the main body 221, the convex portion 222 protrudes in a direction away from the installation cavity 2121, and an avoidance cavity is defined in the convex portion 222. One end of the fastener 30 away from the installation cavity 2121 (such as Figure 3 the rear end of the fastener 30 shown) is located in the avoidance cavity. Thus, the convex portion 222 can facilitate the arrangement of the fastener 30, so that the collision between the fastener 30 and the cover body 22 can be avoided, and further, it can be ensured that the cover body 22 can be normally installed on the base 21.

[0048] For example, as shown in Figure 2 and Figure 3 , the main body 221 is a plate shape arranged in the up and down direction, a convex portion 222 is provided at the middle position of the main body 221, the convex portion 222 protrudes backward, an avoidance cavity is defined in the convex portion 222, and the rear end of the fastener 30 is located in the avoidance cavity.

[0049] Further, as shown in Figure 2 and Figure 3 , on the outer surface of the connecting member 11 not covered by the main body 221, a powder spraying or dipping process is used to spray the outer surface of the connecting member 11, so that the insulation between the connecting member 11 and other structures can be ensured, and the use safety of the battery pack can be further ensured.

[0050] Further, as shown in Figure 3 , the cover 22 is an integrally injection-molded part. Thus, the insulation effect between the cover 22 and the connecting member 11 can be ensured, and further, short circuit between the cover 22 and the connecting member 11 can be prevented. At the same time, the structural strength of the cover 22 can be ensured, damage to the cover 22 can be avoided, and thus the service life of the cover 22 can be ensured.

[0051] According to some embodiments of the present utility model, referring to Figure 5 and Figure 6 , one end of the connecting member 11 is connected to the battery cell 10, and the other end of the connecting member 11 is bent toward the adjacent battery cell 10 along the first direction (such as the left-right direction shown in Figure 5 ). Thus, the structural form of the connecting member 11 can reduce the occupied space of the connecting member 11 in the first direction, improve the space utilization rate of the battery pack, and at the same time, it can also ensure that the connecting member 11 has sufficient current-carrying area, so as to ensure the energy transmission efficiency between adjacent battery cells 10.

[0052] For example, as shown in Figure 5 and Figure 6 , taking the connecting member 11 of the battery cell 10 on the left side as an example, the left end of the connecting member 11 is connected to the battery cell 10, the right end of the connecting member 11 is bent to the right, and the connecting member 11 of the battery cell 10 on the right side and the connecting member 11 of the battery cell 10 on the left side are symmetrically arranged in the left-right direction.

[0053] According to some embodiments of the present utility model, referring to Figure 3 and Figure 4 , the protective member 20 is provided with a fixing hole 2111, and the fixing member 200 passes through the fixing hole 2111 to fix the protective member 20 to the cross beam. Thus, by fixing the protective member 20 to the cross beam, separation of the protective member 20 from the battery cell 10 can be prevented, and thus the reliability of the connection of the connecting member 11 within the protective member 20 can be ensured. At the same time, the protective member 20 can restrict the adjacent battery cells 10 in the first direction, so that the battery cells 10 are uniformly stressed, and further, damage to the battery cells 10 can be prevented, ensuring the use safety of the battery pack.

[0054] For example, as shown in Figure 3 and Figure 4 , fixing holes 2111 penetrating the first part 211 in the up-down direction are provided on the left and right sides of the first part 211 of the base 21, and the fixing member 200 passes through the fixing holes 2111 to fix the protective member 20 to the cross beam.

[0055] The battery pack according to the second aspect embodiment of the present utility model, referring to Figure 1 , includes the battery module 100 of the first aspect of this embodiment.

[0056] According to the battery pack of the embodiment of the present utility model, by providing the battery module 100 of the above-mentioned first aspect embodiment and providing the protective member 20, the number of protective members 20 used can be reduced, thereby reducing the production cost of the battery module 100. At the same time, the connection steps can also be reduced, improving the assembly efficiency.

[0057] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0058] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0059] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0061] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery module, characterized in that: include: A plurality of battery cells, wherein the plurality of battery cells are arranged at intervals along a first direction, and the battery cells are provided with connectors; A protective member is provided between adjacent battery cells, and the connecting members of adjacent battery cells are electrically connected inside the protective member.

2. The battery module according to claim 1, characterized in that: The protective element comprises: A base, wherein a mounting cavity with one side open is formed in the base, and at least a part of the connecting member is disposed in the mounting cavity; A cover body is sealed on the open side of the installation cavity.

3. The battery module according to claim 2, characterized in that: The base comprises: a first portion extending along a first direction; The second part is arranged on one side of the first part in the thickness direction and connected to the first part. The second part is formed into a cylindrical shape with one side open along the circumference of the second part. The installation cavity is defined in the second part.

4. The battery module according to claim 3, characterized in that: include: A fastener is arranged in the installation cavity, the connecting members located in the installation cavity are stacked, and the fastener passes through the connecting members in sequence.

5. The battery module according to claim 4, characterized in that: A fastening hole is provided on the bottom wall of the installation cavity, and one end of the fastener facing the installation cavity is screwed to the fastening hole.

6. The battery module according to claim 4, characterized in that: The cover body comprises a main body, which is formed in a plate shape and covers the fastener in the installation cavity.

7. The battery module according to claim 6, characterized in that: The main body is provided with a convex portion, which protrudes in a direction away from the installation cavity. An escape cavity is defined in the convex portion, and an end of the fastener away from the installation cavity is located in the escape cavity.

8. The battery module according to claim 1, characterized in that: One end of the connecting member is connected to the battery cell, and the other end of the connecting member is bent along the first direction toward the adjacent battery cell.

9. The battery module according to claim 1, characterized in that: The protective member is provided with a fixing hole, and the fixing member passes through the fixing hole to fix the protective member to the crossbeam.

10. A battery pack, characterized in that: A battery module comprising any one of claims 1 to 9.

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