CN217306586U - Equipotential assembly and battery device - Google Patents
Equipotential assembly and battery device Download PDFInfo
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- CN217306586U CN217306586U CN202221205110.8U CN202221205110U CN217306586U CN 217306586 U CN217306586 U CN 217306586U CN 202221205110 U CN202221205110 U CN 202221205110U CN 217306586 U CN217306586 U CN 217306586U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to the technical field of batteries, in particular to an equipotential assembly and a battery device, wherein the equipotential assembly comprises an insulating component and a plurality of connecting units; the insulating member is arranged on an equipotential side of the plurality of batteries of the battery pack; each connecting unit is provided with an integrally formed middle part and two end parts, the two end parts are respectively connected to two ends of the middle part, the connecting units are arranged on the insulating component through the middle part so that the insulating component forms insulation between the middle part and the battery, and the two end parts are respectively used for electrically connecting a pole of the battery and a shell of the battery. Through the structure design, the utility model discloses can reduce the spare part quantity of equipotential subassembly, make the assembly of equipotential subassembly on the battery convenient more, swift, be favorable to reducing spare part cost and improve production machining efficiency.
Description
Technical Field
The utility model relates to a battery technology field especially relates to an equipotential subassembly and battery device.
Background
The battery device adopts an equipotential structure to realize the equipotential of the positive pole of the battery and the battery shell, and the existing equipotential structure is formed by electrically connecting the positive pole of the battery with the battery shell through a bus bar, a nickel sheet, a flexible circuit board, another nickel sheet and a nail cap. The two nickel sheets are respectively welded with the bus bar and the nail cap, the two nickel sheets are electrically connected with the flexible circuit board, and the nail cap is welded with the battery shell. However, in order to realize the equipotential design, the conventional equipotential structure needs to be provided with a nail cap, a nickel plate and a flexible circuit board, which results in an excessive number of parts and a complicated equipotential structure. Moreover, the nickel sheet is welded with the nail cap and the bus bar respectively, so that the production process is complicated and the cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at overcomes above-mentioned prior art's at least defect, provides a simple structure, convenient assembling and the lower equipotential subassembly of cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to an aspect of the present invention, there is provided an equipotential assembly for disposing in a battery pack, the equipotential assembly including an insulating member and a plurality of connection units; the insulating member is configured to be disposed on an equipotential side of a plurality of cells of the battery pack; each connecting unit has integrated into one piece's intermediate part and two tip, two tip connect respectively in the both ends of intermediate part, connecting unit pass through the intermediate part set up in on the insulating member, so that the insulating member is in the intermediate part with form the insulation between the battery, two tip are used for the electricity respectively and connect the utmost point post of battery with the casing of battery.
According to the above technical scheme, the utility model provides an equipotential assembly's advantage lies in with positive effect:
the utility model provides an equipotential subassembly includes insulating member and a plurality of linkage unit. Each connecting unit is provided with an integrally formed middle part and two end parts, the connecting units are arranged on the insulating component through the middle part so that the insulating component forms insulation between the middle part and the battery, and the two end parts are respectively used for electrically connecting a pole of the battery and a shell of the battery. Through the structure design, the utility model discloses can reduce the spare part quantity of equipotential subassembly, make the assembly of equipotential subassembly on the battery convenient more, swift, be favorable to reducing spare part cost and improve production machining efficiency.
Another primary object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery pack having the above-mentioned equipotential assembly.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to the utility model discloses a further aspect provides a battery device, including a plurality of batteries, the equipotential side of battery is provided with utmost point post, wherein, battery device still includes the utility model provides an equipotential subassembly.
According to the above technical scheme, the utility model provides a battery device's advantage lies in with positive effect:
the utility model provides a battery device, through adopting the utility model provides an equipotential subassembly's structural design can reduce spare part quantity, makes the assembly more convenient, swift, is favorable to reducing the spare part cost and improves production machining efficiency.
Drawings
The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:
FIG. 1 is a perspective view of an equipotential component shown in accordance with an exemplary embodiment;
FIG. 2 is an enlarged partial schematic view of the equipotential component shown in FIG. 1;
FIG. 3 is a perspective view of an equipotential assembly shown in accordance with another exemplary embodiment;
FIG. 4 is an enlarged partial schematic view of the equipotential component shown in FIG. 3;
fig. 5 is a partially enlarged schematic view showing a partial structure of a battery device according to an exemplary embodiment;
fig. 6 is a partially enlarged schematic view showing a partial structure of a battery device according to another exemplary embodiment;
fig. 7 is an exploded schematic view of a portion of the structure of fig. 6.
The reference numerals are explained below:
100. an equipotential component;
110. an insulating member;
111. an insulating film;
112. windowing;
113. a main body part;
114. a connecting portion;
115. a region of weakness;
120. a connection unit;
121. an intermediate portion;
122. an end portion;
123. a weakened portion;
124. a buffer structure;
200. a battery;
300. a bus bar;
410. a nail cap;
420. connecting sheets;
x. a first direction;
y. a second direction.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the following description of various 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 illustration various exemplary structures, systems, and steps in which aspects of the invention 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 invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.
Referring to fig. 1, a schematic perspective view of an equipotential assembly 100 according to the present invention is representatively illustrated. In this exemplary embodiment, the equipotential module 100 provided by the present invention is described by taking an example of application to an on-vehicle battery. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to apply the inventive concepts described herein to other types of equipotential structures, and still fall within the scope of the principles of the proposed equipotential assembly 100.
As shown in fig. 1, in an embodiment of the present invention, the equipotential module 100 is disposed in a battery pack, specifically on an equipotential side of a plurality of batteries of the battery pack, and the equipotential module 100 includes an insulating member 110 and a plurality of connecting units 120. Referring to fig. 2 and 3, fig. 2 representatively illustrates a partially enlarged schematic view of an equipotential assembly 100, which particularly shows an enlarged structure of a connecting unit 120 and a portion of an insulating member 110, in accordance with the principles of the present invention. The structure, connection and functional relationship of the main components of the equipotential module 100 according to the present invention will be described in detail with reference to the above-mentioned drawings.
As shown in fig. 1 and 2, in an embodiment of the present invention, the insulating member 110 may be used to be disposed on an equipotential side of the plurality of cells of the battery pack. Each of the connection units 120 has an intermediate portion 121 and two end portions 122 integrally formed, and the two end portions 122 are connected to both ends of the intermediate portion 121, respectively. On this basis, the connecting unit 120 is provided on the insulating member 110 through the intermediate portion 121 so that the insulating member 110 forms insulation between the intermediate portion 121 of the connecting unit 120 and the battery (e.g., a case of the battery or a pole and a busbar provided at an end surface of the battery, etc.), and one end portion 122 of the connecting unit 120 is used to electrically connect a busbar of the battery pack and the other end portion 122 is used to electrically connect a case of the battery. Through the structure design, the utility model discloses can reduce equipotential subassembly 100's spare part quantity, make equipotential subassembly 100 assembly on the battery more convenient, swift, be favorable to reducing spare part cost and improve production machining efficiency.
In the embodiment shown in fig. 1 and 2, a bus bar is connected to the pole of the battery 200 as an example, and in addition, the one end 122 of the connection unit 120 is used to electrically connect the bus bar, thereby indirectly electrically connecting the pole of the battery 200. In some embodiments, the one end 122 of the connection unit 120 may also be directly electrically connected to the terminal of the battery 200, and the present embodiment is not limited thereto.
For ease of understanding and explanation, the first direction X and the second direction Y are defined below. The first direction X is an arrangement direction of the plurality of cells of the battery pack, and the second direction Y is perpendicular to the first direction X. On this basis, the equipotential side of the plurality of cells is the side thereof in the second direction Y.
As shown in fig. 2, in an embodiment of the present invention, the connection unit 120 may be formed with a buffer structure 124 bent toward the battery. Through the structure design, the utility model discloses can improve the reliability of structure to optimize the security performance of group battery, increase of service life. In addition, buffer gear buckles towards the battery and can avoid increasing the width of group battery along second direction Y, is favorable to promoting the space utilization of group battery. In some embodiments, the buffer structure 124 may also be formed by bending the connection unit 120 toward other directions, and is not limited to this embodiment.
In an embodiment of the present invention, the connection unit 120 may be a nickel plate.
As shown in fig. 2, in an embodiment of the present invention, the insulating member 110 includes two layers of insulating films 111 stacked, a portion (e.g., a portion of the middle portion) of the connecting unit 120 is wrapped in the two layers of insulating films 111 (the portion of the connecting unit 120 to be wrapped by the two layers of insulating films 111 is shown by a dotted line in fig. 2), and two end portions 122 of the connecting unit 120 respectively protrude out of the two layers of insulating films 111, i.e., the connecting unit 120 is connected to the insulating member 110 in a bridging manner. Through the structure design, the utility model discloses can utilize both sides insulating film 111, realize the partly of linkage unit 120 and the insulation of battery and utmost point post, realize this part of linkage unit 120 and the insulation of group battery outside component (for example box etc.) simultaneously, in addition, the utility model discloses simple structure, the processing of being convenient for, weight is lighter, is favorable to saving linkage unit 120's material, further reduce cost.
It should be noted that, in this embodiment, the insulating member 110 includes the two-sided insulating film 111 as an example, in some embodiments, the insulating member 110 may include only one insulating film 111, or may adopt another insulating structure, and when the insulating member 110 includes only one insulating film 111, the connecting unit 120 may be disposed on a side of the insulating film 111 facing away from the battery through the middle portion 121, such as adhesion, and the like, and the present invention is not limited thereto.
As shown in fig. 2, in an embodiment of the present invention, the connection unit 120 may be provided with a weak portion 123 at the middle portion 121 thereof. The cross-sectional area of the weak portion 123 is smaller than that of the other portion of the connection unit 120, and the weak portion 123 is covered in the two-side insulating film 111. Through the structure design, the utility model discloses can make weak part 123 fuse prior to the other parts of linkage unit 120 when taking place the short circuit to reduce the influence because of the short circuit causes the battery. In addition, when the connection unit 120 is provided with the weak portion 123, the weak portion 123 may be fused when a short circuit or the like occurs, the insulating film 111 may be fused even in a high temperature environment, and the phase change material or the fire extinguishing material may be released, thereby contributing to extinguishing a fire or cooling other parts of the battery pack.
As shown in fig. 2, based on the structural design of the connection unit 120 provided with the weak portion 123, in an embodiment of the present invention, the weak portion 123 may be a through groove penetrating the connection unit 120 along the second direction Y, and the through groove is opened at the side of the connection unit 120 along the first direction X. Further, the weak portion 123 may include two through grooves, or may include only one through groove. In some embodiments, the weak portion 123 may also include a through hole penetrating through the connection unit 120 along the second direction Y, or a groove opened on the surface of the connection unit 120 but not penetrating through the through hole, which is not limited to this embodiment.
Referring to fig. 3 and 4, fig. 3 is a schematic perspective view of an equipotential device 100 according to another embodiment of the present invention; representatively, an enlarged partial schematic view of an equipotential assembly 100 consistent with the principles of the present invention is shown in fig. 4, which illustrates an enlarged exploded view of one connection unit 120 and a portion of the insulating member 110.
As shown in fig. 3 and 4, based on the structural design that the insulating member 110 includes two layers of insulating films 111 stacked, in an embodiment of the present invention, all of the connecting unit 120 is wrapped in the two layers of insulating films 111, and the two layers of insulating films 111 have open windows 112 opened at positions corresponding to the two end portions 122 to expose the two end portions 122 of the connecting unit 120. Through the structure design, the utility model discloses simple structure, the processing of being convenient for, weight is lighter, is favorable to saving the material of linkage unit 120, further reduce cost.
As shown in fig. 3 and 4, based on the structural design that the insulating member 110 includes two layers of insulating films 111, in an embodiment of the present invention, the insulating member 110 (i.e., each layer of insulating film 111) may have a main body portion 113 and a plurality of connecting portions 114. The plurality of connection units 120 are respectively covered in the two layers of insulation films 111 of the plurality of connection portions 114, and the windows 112 are opened in the two layers of insulation films 111 of the connection portions 114. In other words, the connection unit 120 is not provided in the two-layer insulating film 111 of the body portion 113.
Based on the structural design that the insulating member 110 includes the two layers of insulating films 111, in an embodiment of the present invention, the insulating member 110 may be located on one side (i.e., the side facing away from the battery) of the bus bar 300 along the second direction Y, a phase change material or a fire extinguishing material may be disposed between the two layers of insulating films 111, and the phase change material or the fire extinguishing material may be located at a portion of the insulating film 111 where the connection unit 120 is not located. Taking the insulating member 110 having the main body portion 113 and the plurality of connecting portions 114 as an example, the phase change material or the fire extinguishing material may be coated between two layers of the insulating films 111 of the main body portion 113. Through above-mentioned structural design, phase change material can be used for cooling down for utmost point post, because current battery device's mainstream design direction is the mode of filling soon, consequently calorific capacity is higher, and fire extinguishing material then can provide the effect of putting out a fire when battery device catches fire, because insulating film 111 belongs to the material by the fusing easily for fire extinguishing material is released easily. In an embodiment of the present invention, the insulation member 110 may be provided with a weak region 115, the weak region 115 may be located between the adjacent connection units 120, and a sectional area of the weak region 115 is smaller than that of other portions of the insulation member 110. Through the above structural design, when the pole and the battery are displaced, the insulating member 110 can be preferentially broken in the weak region 115, and the end 122 of the connection unit 120 and the welding point of the pole or the battery case are prevented from being damaged.
Based on the structural design that the insulation member 110 is provided with the weak region 115, in an embodiment of the present invention, the weak region 115 may be a through hole penetrating through the insulation member 110 along the second direction Y. Further, the weak region 115 may include two through holes, or may include only one or more than two through holes. In some embodiments, the weak region 115 may also include a groove that is opened on the surface of the insulating member 110 but not penetrated, which is not limited to this embodiment. It should be noted herein that the equipotential devices illustrated in the figures and described in the present specification are but a few examples of the many types of equipotential devices that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any details or any components of the equipotential assembly shown in the drawings or described in the present specification.
It is noted herein that the equipotential components illustrated in the figures and described in this specification are merely a few examples of the wide variety of equipotential components that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the equipotential assembly shown in the drawings or described in the present specification.
In summary, the present invention provides an equipotential assembly 100 including an insulating member 110 and a plurality of connection units 120. Each of the connection units 120 has an intermediate portion 121 and two end portions 122, which are integrally formed, the connection unit 120 is disposed on the insulating member 110 through the intermediate portion 121 so that the insulating member 110 forms insulation between the intermediate portion 121 and the battery, and the two end portions 122 are used to electrically connect a pole of the battery pack and a case of the battery, respectively. Through the structure design, the utility model discloses can reduce equipotential subassembly 100's spare part quantity, make equipotential subassembly 100 assembly on the battery more convenient, swift, be favorable to reducing spare part cost and improve production machining efficiency.
Based on the above detailed description of several exemplary embodiments of the equipotential assembly 100 according to the present invention, several exemplary embodiments of the battery device according to the present invention will be described below.
Referring to fig. 5, a partially enlarged schematic view of a part of the structure of the battery device according to the present invention is representatively shown, and specifically, the equipotential assembly 100 shown in fig. 1 and 2 is used. In this exemplary embodiment, the battery device provided by the present invention is described taking an in-vehicle battery as an example. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to utilize the inventive concepts of the present invention in other types of battery devices, and still fall within the scope of the principles of the present invention.
As shown in fig. 5, in an embodiment of the present invention, the battery device includes a plurality of batteries 200 and the equipotential module 100 according to the present invention and described in detail in the above embodiment. Wherein the bus bar 300 is disposed on the equipotential side of the battery 200, and the insulating member 110 is disposed on the equipotential side of the plurality of batteries 200. One end 122 of the connection unit 120 is used to electrically connect the bus bar 300, and the other end 122 is used to electrically connect the case of the battery 200. In some embodiments, the one end 122 of the connection unit 120 may also be used to electrically connect the poles of the battery 200, and the embodiment is not limited thereto.
As shown in fig. 5, in an embodiment of the present invention, a nut 410 is provided on the housing of the battery 200, and one end 122 of the connection unit 120 is connected to the nut 410.
Referring to fig. 6 and 7, fig. 6 is a partially enlarged view of a portion of a battery device according to the design concept of the present invention in another embodiment, specifically using the equipotential assembly 100 shown in fig. 3 and 4; fig. 7 representatively illustrates an exploded schematic view of a portion of the structure in fig. 6.
As shown in fig. 6, in an embodiment of the present invention, a bus bar 300 is disposed on an equipotential side of the battery 200, and the insulating member 110 is disposed on a side of the bus bar 300 facing away from the battery 200. Both end portions 122 of the connection unit 120 are exposed to the open windows 112 of the insulation member 110, respectively, and are adjacent to the case of the battery 200 and the bus bar 300, respectively.
As shown in fig. 7, in an embodiment of the present invention, the case of the battery 200 is provided with a connection piece 420, and one end 122 of the connection unit 120 is connected to the connection piece 420. The connecting piece 420 and the casing of the battery 200 may be integrally formed, thereby simplifying an equipotential structure. On this basis, the case of the battery 200 may be coated or coated with an insulating film or an insulating material to insulate the case, and the connecting sheet 420 is not provided with the insulating film or the insulating material and exposes a metal material for connection with the one end 122 of the connection unit 120. Further, in the second direction Y, the area where the connection piece 420 is welded to the connection unit 120 does not exceed the upper surface of the bus bar 300, thereby reducing the space occupation in the second direction Y.
It should be noted herein that the battery devices illustrated in the drawings and described in the present specification are only a few examples of the many types of battery devices that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the battery device shown in the drawings or described in the present specification.
To sum up, the utility model provides a battery device is through adopting the utility model provides an equipotential assembly 100's structural design can reduce spare part quantity, makes the assembly more convenient, swift, is favorable to reducing spare part cost and improves production machining efficiency.
Exemplary embodiments of an equipotential assembly and battery device according to the present disclosure are described and/or illustrated in detail above. Embodiments of the invention 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 step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "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. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.
While the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (10)
1. An equipotential assembly for disposing in a battery pack, comprising:
an insulating member for being disposed on an equipotential side of a plurality of cells of the battery pack; and
a plurality of connecting element, every the connecting element has integrated into one piece's intermediate part and two tip, two tip connect respectively in the both ends of intermediate part, the connecting element pass through the intermediate part set up in on the insulating member, so that the insulating member is in the intermediate part with form the insulation between the battery, two tip are used for the electricity respectively and connect the utmost point post of battery with the casing of battery.
2. The equipotential assembly of claim 1, wherein the connection unit is bent toward the battery to form a buffer structure.
3. The equipotential assembly according to claim 1, wherein the insulating member includes two insulating films stacked on each other, at least a portion of the connection unit is covered in the two insulating films, and the two end portions are exposed to the insulating films.
4. An equipotential assembly according to claim 3, wherein the connecting unit has a weak portion at the middle portion, the weak portion having a smaller cross-sectional area than other portions of the connecting unit, and the weak portion is wrapped in the two insulating films.
5. The equipotential assembly of claim 3, wherein all of the connecting elements are encased in the two layers of insulating film, and the two layers of insulating film are windowed at locations corresponding to the two ends to expose the ends.
6. The equipotential assembly according to claim 5, wherein the insulating member has a main portion and a plurality of connecting portions, the connecting units are respectively wrapped in the two insulating films of the connecting portions, and the window is opened in the two insulating films of the connecting portions.
7. The equipotential assembly of claim 1, wherein the insulating member is provided with a weakened area between the partially adjacent connection units, the weakened area having a cross-sectional area smaller than the cross-sectional area of the rest of the insulating member.
8. Equipotential assembly according to claim 1, characterized in that a busbar is connected to said pole, one of said ends of said connection unit being intended to be electrically connected to said busbar and to the pole of said battery via said busbar.
9. The equipotential assembly of claim 8, wherein the insulating member includes two layers of insulating films stacked one on another, at least a portion of the connection unit is enclosed in the two layers of insulating films, and the two end portions are exposed to the insulating films; the insulating component is positioned on one side, back to the battery, of the bus bar, and a phase change material or a fire extinguishing material is arranged between the two insulating films and is positioned on the part, where the connecting unit is not arranged, of the insulating films.
10. A battery device, comprising a plurality of batteries, wherein the equipotential side of each battery is provided with a pole, and the battery pack further comprises the equipotential component according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221205110.8U CN217306586U (en) | 2022-05-17 | 2022-05-17 | Equipotential assembly and battery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221205110.8U CN217306586U (en) | 2022-05-17 | 2022-05-17 | Equipotential assembly and battery device |
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| Publication Number | Publication Date |
|---|---|
| CN217306586U true CN217306586U (en) | 2022-08-26 |
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| CN202221205110.8U Active CN217306586U (en) | 2022-05-17 | 2022-05-17 | Equipotential assembly and battery device |
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