CN219123410U - Battery pack and battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack and a battery device, wherein the battery pack comprises at least two batteries arranged along a first direction, each battery is provided with two first side faces which are spaced along the first direction and are respectively perpendicular to the first direction, a pole assembly of each battery is arranged in the middle of one first side face along a second direction, the second direction is perpendicular to the first direction, one of the other first side faces of each battery is provided with a containing groove, the position of each containing groove corresponds to the position of the pole assembly, the pole assembly of one battery is at least partially contained in the containing groove of the other battery for two adjacent batteries, the pole assemblies of the two adjacent batteries are connected through a bus bar, and the bus bar is arranged across one battery. Through the structural design, the utility model can improve the connection reliability of the pole assembly of the battery and the busbar, and simultaneously improve the space utilization rate.

Description

Battery pack and battery device

Technical Field

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

Background

In the design of current group battery, along with the length of battery grow more and more, the utmost point post setting of battery is at the both ends of battery and with the busbar welding, when the battery normal use in-process, when the battery produced bulge or vehicle use can produce vibrations, the welding part atress of utmost point post and busbar influences the welding reliability of busbar easily, causes fracture or contact failure easily.

Disclosure of Invention

It is therefore a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art, and to provide a battery pack with improved connection reliability between the post assembly and the bus bar of the battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to an aspect of the present utility model, there is provided a battery pack comprising at least two cells arranged in a first direction, the cells having two first sides spaced apart in the first direction and perpendicular to the first direction, respectively, a post assembly of the cells being disposed in a middle portion of one of the first sides in a second direction perpendicular to the first direction, another one of the first sides of the cells being provided with a receiving groove, the position of the receiving groove corresponding to the position of the post assembly, the post assembly of one of the cells being at least partially received in the receiving groove of the other cell for two adjacent cells, the post assemblies of the two adjacent cells being connected via a bus bar, the bus bar being disposed across one of the cells.

As can be seen from the above technical solutions, the battery pack provided by the present utility model has the following advantages and positive effects:

the pole assembly of the battery pack is arranged in the middle of one first side face along the second direction, the other first side face of the battery is provided with the accommodating groove corresponding to the position of the pole assembly, the pole assembly of one battery is at least partially accommodated in the accommodating groove of the other adjacent battery, the pole assemblies of the two adjacent batteries are connected through the bus bars, and the bus bars are arranged across one battery. Through the structural design, the utility model can improve the connection reliability of the pole assembly of the battery and the busbar, and simultaneously improve the space utilization rate.

Another main object of the present utility model is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery device employing the above-mentioned battery pack.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to another aspect of the present utility model, there is provided a battery device, including the battery pack according to the present utility model.

As can be seen from the above technical solutions, the battery device provided by the present utility model has the following advantages and positive effects:

the battery device provided by the utility model can improve the connection reliability of the pole assembly of the battery and the busbar by adopting the structural design of the battery pack provided by the utility model, and simultaneously improve the space utilization rate.

Drawings

Various objects, features and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments of the utility model, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the utility model and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:

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

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic perspective view of the bus bar shown in FIG. 2;

fig. 4 is an enlarged partial schematic view of the battery shown in fig. 1;

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

The reference numerals are explained as follows:

100. a battery;

101. a top surface;

102. a first side;

110. a pole assembly;

120. a receiving groove;

121. a chamfering structure;

122. a chamfering structure;

200. a busbar;

210. a first section;

220. a second section;

x, a first direction;

y. second direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model are described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and drawings are intended to be illustrative in nature and not to be limiting.

In the following description of various exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although the terms "over," "between," "within," and the like may be used in this description to describe various exemplary features and elements of the utility model, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the utility model.

Referring to fig. 1, a schematic perspective view of a battery pack according to the present utility model is representatively illustrated. In this exemplary embodiment, the battery pack according to the present utility model is described as being applied to a vehicle-mounted battery. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to adapt the relevant designs of the present utility model to other types of battery packs, and such changes are still within the principles of the battery packs presented herein.

As shown in fig. 1, in an embodiment of the present utility model, a battery pack according to the present utility model includes at least two batteries 100, and the batteries 100 are arranged along a first direction X. Referring to fig. 2-5 in conjunction, an enlarged schematic view of portion a of fig. 1 is representatively illustrated in fig. 2; a schematic perspective view of the bus bar 200 is representatively illustrated in fig. 3; a partially enlarged schematic view of battery 100 is representatively illustrated in fig. 4; the top view of fig. 4 is representatively illustrated in fig. 5. The structure, connection manner and functional relationship of the main components of the battery pack according to the present utility model will be described below with reference to the above-mentioned drawings.

As shown in fig. 1 to 5, in an embodiment of the present utility model, the battery 100 has two first sides 102 spaced apart along a first direction X and perpendicular to the first direction X, and the post assembly 110 of the battery 100 is disposed at a middle portion (i.e., the rest positions of the non-two ends) of one of the first sides 102 along a second direction Y, which is perpendicular to the first direction X. One of the other first sides 102 of the battery 100 (i.e., the first side 102 where the pole assembly 110 is not disposed) may be provided with a receiving groove 120, and the position of the receiving groove 120 corresponds to the position of the pole assembly 110. Accordingly, for two adjacent cells 100, the post assembly 110 of one cell 100 is at least partially received in the receiving groove 120 of the other cell 100, and on the basis that the post assemblies 110 of two adjacent cells 100 are connected via the bus bar 200, the bus bar 200 straddles one of the cells 100, i.e., one end of the bus bar 200 is connected to the post assembly 110 on one first side 102 of one cell 100, and the bus bar 200 straddles the other cell 100 and is connected to the post assembly 110 on one first side 102 of the other cell 100. Through the structural design, the connection reliability of the pole assembly 110 of the battery 100 and the busbar 200 can be improved, interference between the pole assembly 110 and other structures is avoided, the occupied space of the battery pack along the first direction X is saved, and the space utilization rate is improved.

As shown in fig. 4, based on the structural design that the first side 102 of the battery 100, where the post assembly 110 is not disposed, is provided with the receiving groove 120, in an embodiment of the present utility model, the receiving groove 120 may penetrate the battery 100 in the height direction of the battery 100, that is, the upper and lower ends of the receiving groove 120 are respectively opened to the top surface 101 and the bottom surface of the battery 100. On this basis, the bus bar 200 may be disposed astride the top surface 101 and/or the bottom surface of the battery 100, and the bus bar 200 is partially received in the receiving groove 120. Through the structural design, the utility model can avoid the structural interference between the bus bar 200 and the battery 100, is convenient for the installation of the bus bar 200, and is beneficial to improving the space utilization rate.

As shown in fig. 2 and 3, in an embodiment of the present utility model, the busbar 200 may have a first portion 210 and a second portion 220, where the first portion 210 and the second portion 220 are connected in a bent manner. The first portion 210 spans the battery 100, that is, the first portion 210 may be a portion of the busbar 200 that spans the top surface 101 or the bottom surface of the battery 100, and the second portion 220 is connected to the post assembly 110 and at least partially received in the receiving groove 120. Through the above structural design, the utility model facilitates the assembly of the busbar 200 and the grouping.

As shown in fig. 2 and 3, based on the structural design of the bus bar 200 having the first portion 210 and the second portion 220, in an embodiment of the present utility model, the bus bar 200 may have two second portions 220, and the two second portions 220 are respectively connected to two ends of the first portion 210 along the first direction X. Accordingly, the bus bar 200 may have a substantially n-shaped or a several-shaped structure. In some embodiments, the busbar 200 may also be formed of two separate members, where each member includes a first portion 210 and a second portion 220, i.e., each member may be substantially inverted "L" shaped, and the second portions 220 of the two members respectively connect the post assemblies 110 of the adjacent two cells 100, and the first portions 210 of the two members overlap each other and commonly span the top surface 101 or the bottom surface of one of the cells 100.

As shown in fig. 4 and 5, based on the structural design of the receiving groove 120 as a through groove structure, in an embodiment of the present utility model, an edge of the receiving groove 120 at the junction with the top surface 101 or the bottom surface of the battery 100 may have a chamfer structure 121. Through the above structural design, the present utility model can prevent the bus bar 200 from being damaged or a person from being scratched during the assembly process due to the excessively sharp edge of the junction of the receiving groove 120 and the top surface 101 or the bottom surface of the battery 100.

As shown in fig. 4, the chamfer structure 121 may be a rounded corner structure in an embodiment of the present utility model based on the structural design that the edge of the junction of the receiving groove 120 and the top surface 101 or the bottom surface has the chamfer structure 121. In some embodiments, the chamfer structure 121 may take other chamfer forms, such as a chamfer structure, but not limited to this embodiment.

As shown in fig. 1, in one embodiment of the present utility model, the post assembly 110 may be located at a center of the first side 102 of the battery 100 along a second direction Y perpendicular to the first direction X, i.e., the "length" direction of the battery 100. Through the above structural design, the present utility model can further ensure the connection reliability of the post assembly 110 of the battery 100 and the bus bar 200.

As shown in fig. 4 and 5, in an embodiment of the present utility model, along a second direction Y perpendicular to the first direction X, the width of the slot opening of the accommodating groove 120 may be greater than the width of the slot bottom, and two side slot walls of the accommodating groove 120 spaced along the second direction Y smoothly transition from the slot opening to the slot bottom. Through the structural design, the battery 100 shell with the accommodating groove 120 can be conveniently molded, and the processing cost is reduced.

As shown in fig. 5, in an embodiment of the present utility model, the orthographic projection pattern of the accommodating groove 120 on the top surface 101 or the bottom surface of the battery 100 may be trapezoidal, that is, orthographic projection patterns of groove walls on both sides of the accommodating groove 120 spaced apart in the second direction Y are respectively straight lines inclined opposite to the first direction X, based on the structural design that the groove width of the accommodating groove 120 is greater than the groove bottom width. In some embodiments, the groove wall of the accommodating groove 120 may be curved or folded, which is not limited to the present embodiment.

As shown in fig. 5, based on the structural design that the two side groove walls of the accommodating groove 120 are inclined relative to the first direction X, in an embodiment of the present utility model, an angle α between the first direction X and an orthographic projection pattern of the two side groove walls of the accommodating groove 120 on the top surface 101 or the bottom surface may be 2 ° to 25 °, for example, 2 °, 10 °, 20 °, 25 °, or the like. In some embodiments, the angle α between the orthographic projection pattern of the two side walls of the receiving groove 120 on the top surface 101 or the bottom surface and the first direction X may be less than 2 °, or may be greater than 25 °, such as 1.9 °, 26 °, etc., which is not limited to the present embodiment.

As shown in fig. 4 and 5, in an embodiment of the present utility model, an edge of the connection of the receiving groove 120 and the first side 102 of the battery 100 may have a chamfer structure 122. Through the above structural design, the present utility model can prevent the bus bar 200 from being damaged or a person from being scratched during the assembly process due to the excessively sharp edge of the junction of the receiving groove 120 and the top surface 101 or the bottom surface of the battery 100.

As shown in fig. 4, the edge of the connection between the receiving groove 120 and the first side 102 has a chamfer structure 122, and in an embodiment of the present utility model, the chamfer structure 122 may be a rounded corner structure. In some embodiments, the chamfer structure 122 may take other chamfer forms, such as a chamfer structure, but not limited to this embodiment.

It should be noted herein that the battery packs shown in the drawings and described in the present specification are only a few examples of the wide variety of battery packs that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery shown in the drawings or described in this specification.

In summary, in the battery pack according to the present utility model, the post assemblies 110 are disposed on one first side 102, the other first side 102 of the battery 100 is provided with the accommodating groove 120 corresponding to the position of the post assemblies 110, the post assemblies 110 of one battery 100 are at least partially accommodated in the accommodating groove 120 of the adjacent other battery 100, the post assemblies 110 of the adjacent two batteries 100 are connected via the bus bar 200, and the bus bar 200 spans one of the batteries 100. Through the structural design, the connection reliability of the pole assembly 110 of the battery 100 and the busbar 200 can be improved, interference between the pole assembly 110 and other structures is avoided, the occupied space of the battery pack along the first direction X is saved, and the space utilization rate is improved.

Based on the above detailed description of the exemplary embodiments of the battery pack according to the present utility model, the exemplary embodiments of the battery device according to the present utility model will be described below.

In one embodiment of the present utility model, the battery device according to the present utility model includes the battery pack according to the present utility model and described in detail in the above embodiment.

It should be noted herein that the battery devices shown in the drawings and described in this specification are only a few examples of the wide variety of battery devices that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery device shown in the drawings or described in this specification.

In summary, by adopting the structural design of the battery pack according to the present utility model, the battery device provided by the present utility model can improve the connection reliability between the post assembly 110 of the battery 100 and the busbar 200, and simultaneously save the occupied space of the battery pack along the first direction X, which is beneficial to improving the space utilization.

Exemplary embodiments of the battery pack and the battery device according to the present utility model are described and/or illustrated in detail above. Embodiments of the utility model are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. 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 introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and in the description are used for descriptive purposes only and not for numerical limitation of their subject matter.

While the utility model has been described in terms of various specific embodiments, those skilled in the art will recognize that the utility model can be practiced with modification within the spirit and scope of the claims.

Claims (10)

1. The battery pack is characterized by comprising at least two batteries which are arranged along a first direction, wherein the batteries are provided with two first side surfaces which are spaced along the first direction and are respectively perpendicular to the first direction, a pole assembly of each battery is arranged in the middle of one first side surface along a second direction, the second direction is perpendicular to the first direction, the other first side surface of each battery is provided with a containing groove, the position of each containing groove corresponds to the position of each pole assembly, for two adjacent batteries, the pole assembly of one battery is at least partially contained in the containing groove of the other battery, the pole assemblies of the two adjacent batteries are connected through a bus bar, and the bus bar is arranged across one battery.

2. The battery pack according to claim 1, wherein the accommodating groove penetrates the battery in a height direction of the battery, the bus bar is provided astride a top surface and/or a bottom surface of the battery, and the bus bar is partially accommodated in the accommodating groove.

3. The battery of claim 2, wherein the busbar has a first portion and a second portion, the first portion is in relative bending connection with the second portion, the first portion straddles the battery, and the second portion is connected to the post assembly and is at least partially received in the receiving groove.

4. The battery pack according to claim 2, wherein an edge of the junction of the receiving groove and the top or bottom surface has a chamfer structure.

5. The battery of claim 1, wherein the post assembly is centered on the first side in the second direction.

6. The battery pack of claim 1, wherein the width of the slot opening of the receiving slot is greater than the width of the slot bottom in a second direction perpendicular to the first direction, and the slot walls of the receiving slot on both sides spaced apart in the second direction smoothly transition from the slot opening to the slot bottom.

7. The battery pack according to claim 6, wherein the receiving groove has a trapezoidal orthographic projection pattern on the top or bottom surface of the battery, and the orthographic projection pattern of the groove walls on both sides has a straight line shape inclined opposite to the first direction.

8. The battery pack according to claim 7, wherein an angle between an orthographic projection pattern of the both side groove walls of the receiving groove on the top surface or the bottom surface and the first direction is 2 ° to 25 °.

9. The battery of claim 1, wherein an edge of the junction of the receiving groove and the first side has a chamfer structure.

10. A battery device comprising the battery pack according to any one of claims 1 to 9.

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