CN219123410U - Batteries and battery devices - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack and a battery device. The battery pack includes at least two batteries arranged along a first direction. On the first side, the pole assembly of the battery is arranged in the middle of one of the first sides along the second direction, the second direction is perpendicular to the first direction, and the other first side of the battery is provided with a receiving groove, and the position of the receiving groove corresponds to At the position of the pole assembly, for two adjacent batteries, the pole assembly of one battery is at least partially accommodated in the accommodation groove of the other battery, and the pole assemblies of the two adjacent batteries are connected through a bus bar, and the bus bar straddles the on one of the batteries. Through the above structural design, the utility model can improve the connection reliability between the pole assembly of the battery and the bus bar, and at the same time improve the space utilization rate.

Description

Batteries and battery devices

technical field

The utility model relates to the technical field of batteries, in particular to a battery pack and a battery device.

Background technique

In the design of the existing battery pack, as the length of the battery increases, the poles of the battery are arranged at both ends of the battery and welded to the bus bar. During normal use of the battery, the battery will bulge or the vehicle will be damaged When vibration occurs, the welding point of the pole and the bus bar will be stressed, which will easily affect the welding reliability of the bus bar, and easily cause breakage or poor contact.

Utility model content

A main purpose of the present utility model is to overcome at least one defect of the above-mentioned prior art, and provide a battery pack with better connection reliability between the pole assembly of the battery and the bus bar.

In order to achieve the above object, the utility model adopts the following technical solutions:

According to one aspect of the present invention, there is provided a battery pack, which includes at least two batteries arranged along a first direction, the batteries having Two first sides, the pole assembly of the battery is arranged in the middle of one of the first sides along the second direction, the second direction is perpendicular to the first direction, and the other of the battery is The first side is provided with a receiving groove, the position of the receiving groove corresponds to the position of the pole assembly, and for two adjacent batteries, the pole assembly of one battery is at least partially accommodated in the other In the accommodating groove of the battery, the pole assemblies of two adjacent batteries are connected via a bus bar, and the bus bar straddles one of the batteries.

It can be seen from the above technical solution that the advantages and positive effects of the battery pack proposed by the utility model are:

The pole assembly of the battery pack proposed by the utility model is arranged in the middle of a first side along the second direction, and the other first side of the battery is provided with a receiving groove corresponding to the position of the pole assembly, and the pole assembly of a battery The assembly is at least partially accommodated in the accommodation groove of another adjacent battery, and the pole assemblies of the two adjacent batteries are connected via a bus bar, and the bus bar straddles one of the batteries. Through the above structural design, the utility model can improve the connection reliability between the pole assembly of the battery and the bus bar, and at the same time improve the space utilization rate.

Another main purpose of the present utility model is to overcome at least one defect of the above-mentioned prior art, and provide a battery device using the above-mentioned battery pack.

In order to achieve the above object, the utility model adopts the following technical solutions:

According to another aspect of the present invention, a battery device is provided, which includes the battery pack proposed in the present invention.

It can be seen from the above technical solution that the advantages and positive effects of the battery device proposed by the utility model are:

The battery device proposed by the utility model adopts the structural design of the battery pack proposed by the utility model, which can improve the connection reliability between the pole assembly of the battery and the busbar, and improve the space utilization rate at the same time.

Description of drawings

The various objects, features and advantages of the invention will become more apparent by considering the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals designate the same or similar parts throughout. in:

Fig. 1 is a schematic perspective view of a battery pack according to an exemplary embodiment;

Fig. 2 is an enlarged schematic view of part A in Fig. 1;

Fig. 3 is a schematic perspective view of the three-dimensional structure of the bus bar shown in Fig. 2;

Fig. 4 is a partially enlarged schematic diagram of the battery shown in Fig. 1;

FIG. 5 is a top view of FIG. 4 .

The reference signs are explained as follows:

100. battery;

101. top surface;

102. First side;

110. Pole assembly;

120. Accommodating slot;

121. Chamfering structure;

122. Chamfering structure;

200. Bus bar;

210. Part I;

220. Part II;

X. First direction;

Y. Second direction.

Detailed ways

Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the utility model can have various changes in different embodiments, all of which do not depart from the scope of the utility model, and the description and drawings therein are used for illustration in essence, rather than for Limit the utility model.

In the following description of different exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of example different exemplary embodiments in which aspects of the invention may be implemented. Structures, systems and procedures. It is to be understood that other specific arrangements of components, structures, exemplary devices, systems and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "on", "between", "inside", etc. may be used in this specification to describe various exemplary features and elements of the invention, these terms are used herein for convenience only, for example Orientation according to the examples described in the attached drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of structures to fall within the scope of the present invention.

Referring to FIG. 1 , it representatively shows a three-dimensional schematic view of the battery pack proposed by the present invention. In this exemplary embodiment, the battery pack proposed by the present invention is described as an application to a vehicle battery as an example. Those skilled in the art can easily understand that in order to apply the relevant design of the present utility model to other types of battery packs, various modifications, additions, substitutions, deletions or other changes are made to the following specific embodiments, These variations are still within the scope of the principles of the battery pack proposed by the present invention.

As shown in FIG. 1 , in one embodiment of the present invention, the battery pack proposed by the present invention includes at least two batteries 100 , and these batteries 100 are arranged along a first direction X. With reference to FIGS. 2 to 5 , FIG. 2 representatively shows an enlarged schematic view of part A in FIG. 1 ; A partially enlarged schematic view of the battery 100 is shown; FIG. 5 representatively shows the top view of FIG. 4 . The structure, connection mode and functional relationship of each main component of the battery pack proposed by the present invention will be described below in conjunction with the above-mentioned drawings.

As shown in FIGS. 1 to 5 , in one embodiment of the present invention, the battery 100 has two first side surfaces 102 that are spaced apart along the first direction X and are respectively perpendicular to the first direction X, and the poles of the battery 100 The column assembly 110 is disposed in the middle of one of the first side surfaces 102 along the second direction Y (that is, other positions other than the two ends), and the second direction Y is perpendicular to the first direction X. The other first side 102 of the battery 100 (ie the first side 102 not provided with the pole assembly 110 ) may be provided with a receiving groove 120 whose position corresponds to that of the pole assembly 110 . Accordingly, for two adjacent batteries 100, the pole assembly 110 of one of the batteries 100 is at least partially accommodated in the receiving groove 120 of the other battery 100, on this basis, the poles of the two adjacent batteries 100 The post assembly 110 is connected via a bus bar 200, which straddles one of the batteries 100. The other battery 100 is connected to the pole assembly 110 on a first side 102 of the other battery 100 . Through the above structural design, the utility model can improve the connection reliability between the pole assembly 110 and the bus bar 200 of the battery 100, and at the same time avoid the interference between the pole assembly 110 and other structures, saving the occupied space of the battery pack along the first direction X, Helps to improve space utilization.

As shown in FIG. 4 , based on the structural design that the first side 102 of the battery 100 without the pole assembly 110 is provided with a receiving groove 120 , in an embodiment of the present invention, the receiving groove 120 can be along the height direction of the battery 100 Through the battery 100 , that is, the upper and lower ends of the accommodating groove 120 respectively open to the top surface 101 and the bottom surface of the battery 100 . On this basis, the bus bar 200 can be straddled on the top surface 101 and/or the bottom surface of the battery 100 , and the bus bar 200 is partially accommodated in the receiving groove 120 . Through the above structural design, the utility model can avoid the structural interference between the bus bar 200 and the battery 100, and at the same time facilitate the installation of the bus bar 200, which is beneficial to improve the space utilization rate.

As shown in FIG. 2 and FIG. 3 , in an embodiment of the present invention, the busbar 200 may have a first part 210 and a second part 220 , and the first part 210 and the second part 220 are connected by bending relative to each other. The first part 210 straddles the battery 100, that is, the first part 210 may be a part where the bus bar 200 straddles the top surface 101 or the bottom surface of the battery 100, and the second part 220 is connected to the pole assembly 110 and at least partially accommodated in the housing. slot 120. Through the above structural design, the utility model facilitates the assembly of the busbar 200 and facilitates grouping.

As shown in FIG. 2 and FIG. 3 , based on the structural design that the bus bar 200 has a first part 210 and a second part 220 , in an embodiment of the present invention, the bus bar 200 may have two second parts 220 . The two second parts 220 are connected to two ends of the first part 210 along the first direction X respectively. Accordingly, the bus bar 200 may be roughly in the shape of an "n" or a "several" shape. In some embodiments, the busbar 200 can also be composed of two separate components, each of which includes a first part 210 and a second part 220, that is, each component can be roughly in the shape of an inverted "L". font, the second parts 220 of the two components are respectively connected to the pole assemblies 110 of two adjacent batteries 100, and the first parts 210 of the two components overlap each other and span across the top surface 101 of one of the batteries 100 or bottom surface.

As shown in Figures 4 and 5, based on the structural design of the receiving groove 120 as a through groove structure, in one embodiment of the present invention, the edge of the connection between the receiving groove 120 and the top surface 101 or bottom surface of the battery 100 may have chamfer structure 121 . Through the above structural design, the utility model can prevent the edge of the joint between the receiving groove 120 and the top surface 101 or bottom surface of the battery 100 from being too sharp, which may damage the bus bar 200 or scratch personnel during the assembly process.

As shown in FIG. 4 , based on the structural design of the chamfered structure 121 on the edge of the connection between the receiving groove 120 and the top surface 101 or the bottom surface, in an embodiment of the present invention, the chamfered structure 121 can be a rounded corner structure. . In some implementations, the chamfering structure 121 may also adopt other chamfering forms, such as a chamfering structure, etc., which is not limited to this embodiment.

As shown in FIG. 1 , in one embodiment of the present invention, the pole assembly 110 may be located at the center of the first side 102 of the battery 100 along the second direction Y, the second direction Y being perpendicular to the first direction X, That is, the "length" direction of the battery 100 . Through the above structural design, the utility model can further ensure the connection reliability between the pole assembly 110 of the battery 100 and the bus bar 200 .

As shown in Figures 4 and 5, in one embodiment of the present invention, along the second direction Y perpendicular to the first direction X, the width of the notch of the receiving groove 120 can be greater than the width of the bottom of the groove, and the receiving groove 120 The groove walls on both sides spaced apart along the second direction Y make a smooth transition from the groove opening to the groove bottom. Through the above structural design, the utility model can facilitate the molding process of the battery 100 housing with the receiving groove 120, which is beneficial to reduce the processing cost.

As shown in FIG. 5 , based on the structural design that the notch width of the receiving groove 120 is greater than the width of the bottom of the groove, in one embodiment of the present invention, the orthographic projection pattern of the receiving groove 120 on the top surface 101 or the bottom surface of the battery 100 can be It is trapezoidal, that is, the orthographic projection figures of the groove walls on both sides of the receiving groove 120 that are spaced apart along the second direction Y are straight lines that are relatively inclined to the first direction X. In some embodiments, the above-mentioned groove wall of the receiving groove 120 may also be curved or zigzag-shaped, which is not limited to this embodiment.

As shown in FIG. 5 , based on the structural design that the walls on both sides of the accommodation groove 120 are relatively inclined to the first direction X, in one embodiment of the present invention, the walls on both sides of the accommodation groove 120 are on the top surface 101 or the bottom surface. The included angle α between the orthographic projection figure above and the first direction X may be 2°-25°, such as 2°, 10°, 20°, 25° and so on. In some embodiments, the angle α between the orthographic projection of the two side walls of the accommodation tank 120 on the top surface 101 or bottom surface and the first direction X may also be less than 2°, or may be greater than 25°, such as 1.9° °, 26°, etc., are not limited to this embodiment.

As shown in FIG. 4 and FIG. 5 , in an embodiment of the present invention, the edge of the connection between the receiving groove 120 and the first side 102 of the battery 100 may have a chamfered structure 122 . Through the above structural design, the utility model can prevent the edge of the joint between the receiving groove 120 and the top surface 101 or bottom surface of the battery 100 from being too sharp, which may damage the bus bar 200 or scratch personnel during the assembly process.

As shown in FIG. 4 , the edge of the joint between the receiving groove 120 and the first side 102 has a structural design of a chamfered structure 122 , and in an embodiment of the present invention, the chamfered structure 122 may be a rounded corner structure. In some implementations, the chamfering structure 122 may also adopt other chamfering forms, such as a chamfering structure, etc., which is not limited to this embodiment.

It should be noted at this point that the battery packs shown in the drawings and described in this specification are but a few examples of the many types of battery packs that can employ the principles of the invention. It should be clearly understood that the principles of the present invention are in no way limited to any detail or any component of the battery pack shown in the drawings or described in this specification.

In summary, the pole assembly 110 of the battery pack proposed by the present invention is arranged on one first side 102, and the other first side 102 of the battery 100 is provided with a receiving groove 120 corresponding to the position of the pole assembly 110, The pole assembly 110 of one battery 100 is at least partially accommodated in the accommodation groove 120 of another adjacent battery 100, and the pole assemblies 110 of two adjacent batteries 100 are connected via a bus bar 200, and the bus bar 200 straddles one of them. battery 100. Through the above structural design, the utility model can improve the connection reliability between the pole assembly 110 and the bus bar 200 of the battery 100, and at the same time avoid the interference between the pole assembly 110 and other structures, saving the occupied space of the battery pack along the first direction X, Helps to improve space utilization.

Based on the above detailed description of the exemplary embodiment of the battery pack proposed by the present invention, an exemplary embodiment of the battery device proposed by the present invention will be described below.

In one embodiment of the present invention, the battery device proposed by the present invention includes the battery pack proposed by the present invention and described in detail in the above embodiments.

It should be noted at this point that the battery arrangements shown in the drawings and described in this specification are but a few examples of the many kinds of battery arrangements that can employ the principles of the invention. It should be clearly understood that the principles of the present invention are in no way limited to any detail or any component of the battery device shown in the drawings or described in this specification.

In summary, the battery device proposed by the utility model can improve the connection reliability between the pole assembly 110 of the battery 100 and the bus bar 200 by adopting the structural design of the battery pack proposed by the utility model, and at the same time save the battery pack along the first The occupied space in direction X is beneficial to improve space utilization.

Exemplary embodiments of the battery pack and the battery device proposed by the present utility model are described and/or illustrated above in detail. However, the embodiments of the present invention are not limited to the specific embodiments described here, on the contrary, the components and/or steps of each embodiment can be used independently and separately from other components and/or steps described here. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When referring to elements/components/etc. described and/or illustrated herein, the terms "a", "an" and "aforementioned" etc. are used to mean that there are one or more elements/components/etc. The terms "comprising", "including" and "having" are used in an open inclusive sense and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc. In addition, the terms "first" and "second" in the claims and the specification are used only as signs and do not limit the number of objects.

Although the battery pack and battery device proposed by the present invention have been described in terms of different specific embodiments, those skilled in the art will recognize that the practice of the present invention can be modified within the spirit and scope of the claims.

Claims (10)

1. A battery pack, characterized in that it comprises at least two batteries arranged along a first direction, and said batteries have two first side faces spaced apart along said first direction and respectively perpendicular to said first direction , the pole assembly of the battery is arranged in the middle of one of the first sides along the second direction, the second direction is perpendicular to the first direction, and the other first side of the battery is arranged There is a receiving groove, and the position of the receiving groove corresponds to the position of the pole assembly. For two adjacent batteries, the pole assembly of one battery is at least partially accommodated in the pole assembly of the other battery. In the accommodating groove, the pole assemblies of two adjacent batteries are connected via a bus bar, and the bus bar straddles one of the batteries. 2. The battery pack according to claim 1, wherein the accommodating groove runs through the battery along the height direction of the battery, and the bus bar straddles the top surface and/or bottom surface of the battery, The bus bar is partially accommodated in the accommodation groove. 3. The battery pack according to claim 2, wherein the bus bar has a first part and a second part, the first part and the second part are connected by bending relative to each other, and the first part Spanning the battery, the second portion is connected to the pole assembly and at least partially accommodated in the receiving groove. 4 . The battery pack according to claim 2 , wherein an edge of a connection between the receiving groove and the top surface or the bottom surface has a chamfered structure. 5. The battery pack according to claim 1, wherein the pole assembly is located at the center of the first side along the second direction. 6. The battery pack according to claim 1, characterized in that, along a second direction perpendicular to the first direction, the width of the notch of the receiving groove is greater than the width of the bottom of the groove, and the receiving groove is along the The groove walls on both sides spaced apart in the second direction make a smooth transition from the notch to the bottom of the groove. 7. The battery pack according to claim 6, wherein the orthographic projection of the accommodating groove on the top or bottom of the battery is trapezoidal, and the orthographic projection of the groove walls on both sides is the same as the The above-mentioned first direction is relatively inclined linear shape. 8 . The battery pack according to claim 7 , wherein the included angle between the orthographic projection figure of the two sides of the accommodating groove on the top surface or the bottom surface and the first direction is It is 2°～25°. 9 . The battery pack according to claim 1 , wherein an edge of a connection between the receiving groove and the first side has a chamfered structure. 10. A battery device, comprising the battery pack according to any one of claims 1-9.

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