CN210129548U - Battery module and cover plate - Google Patents
Battery module and cover plate Download PDFInfo
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- CN210129548U CN210129548U CN201921487940.2U CN201921487940U CN210129548U CN 210129548 U CN210129548 U CN 210129548U CN 201921487940 U CN201921487940 U CN 201921487940U CN 210129548 U CN210129548 U CN 210129548U
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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 application provides a battery module and apron is applied to the battery field. The battery module comprises a plurality of cylindrical batteries with the same orientation, wherein a first lug and a second lug of each cylindrical battery are positioned on the same welding surface, and the welding surface is a plane for performing welding operation on the first lugs and the second lugs of the cylindrical batteries respectively. So, because the first utmost point ear of all cylinder batteries all is located this face of weld with the second utmost point ear for when welding the utmost point ear of this battery module, need not overturn this battery module, improved the welding efficiency of battery module and the whole welding quality of battery module.
Description
Technical Field
The application relates to the field of batteries, in particular to a battery module and a cover plate.
Background
The battery pack generally includes a plurality of battery modules, each of which is constructed by welding a plurality of batteries in series and parallel. Among them, the current battery module is mostly composed of cylindrical batteries because the welding technology and module manufacturing process for the cylindrical batteries are mature.
At present, the welding process for the battery module in the industry is generally the double-side welding of the positive electrode and the negative electrode, namely, in the manufacturing process of the battery module, the positive electrode (or the negative electrode) is welded firstly, and then the module is turned over and then the other side is welded. Because the battery module is usually heavier, the turnover process consumes manpower in the actual operation process, and the welded tabs are easily scratched or even directly damaged in the turnover process, the difficulty and the adverse risk are added to the manufacturing process of the battery module.
SUMMERY OF THE UTILITY MODEL
In order to overcome at least one of the deficiencies in the prior art, one of the objectives of the present application is to provide a battery module including a plurality of cylindrical batteries oriented in a uniform direction, each of the cylindrical batteries including a first tab and a second tab;
the first electrode lugs and the second electrode lugs of the cylindrical batteries are located on the same welding surface, and the welding surface is a plane for performing welding operation on the first electrode lugs and the second electrode lugs of the cylindrical batteries respectively.
Optionally, the first tab and the second tab extend in opposite directions at the weld face.
Optionally, the plurality of cylindrical batteries are arranged in a staggered array, a bus bar is arranged between the adjacent first row of cylindrical batteries and the second row of cylindrical batteries, and each first tab in the first row of cylindrical batteries and each second tab in the second row of cylindrical batteries are electrically connected through the bus bar.
Optionally, the busbar is provided with a tab through hole corresponding to each first tab in the first row of cylindrical batteries, and each first tab in the first row of cylindrical batteries is led out from the corresponding tab through hole and electrically connected with the busbar.
Optionally, the welding part of each first tab in the first row of cylindrical batteries, which is led out from the corresponding through hole, is elastically attached to the bus bar.
Optionally, the first tab is a negative tab, and the negative tab is a metal sheet arranged on the metal surface outside the cylindrical battery.
Optionally, the second tab is provided with a first matching identifier, the bus bar is further provided with a second matching identifier corresponding to each first matching identifier in the second row of cylindrical batteries, and the second matching identifier is used for matching with the first matching identifier in the second row of cylindrical batteries to fix each second tab in the second row of cylindrical batteries to a preset position of the bus bar.
Optionally, the first matching identifier and the second matching identifier are positioning through holes with the same size.
Another objective of the embodiments of the present application is to provide a battery module cover plate, which is applied to the battery module, the battery module cover plate includes a first cover plate and a second cover plate respectively covering two ends of the battery module, and the first cover plate and the second cover plate are used for fixing the plurality of cylindrical batteries;
the plurality of cylindrical batteries are arranged on the first cover plate in a staggered and aligned manner, and a bus bar is arranged between the adjacent first row of cylindrical batteries and the second row of cylindrical batteries;
the second cover plate is located the face of weld, the busbar set up in the upper surface of second cover plate, every first utmost point ear in the first row of cylinder battery with every second utmost point ear in the second row of cylinder battery passes through busbar electric connection.
Optionally, the first cover plate is provided with limiting holes which are staggered and arranged in an array, and the plurality of cylindrical batteries are respectively placed in the limiting holes.
Compared with the prior art, the method has the following beneficial effects:
the embodiment of the application provides a battery module and a cover plate, which are applied to the field of batteries. The battery module comprises a plurality of cylindrical batteries with the same orientation, wherein a first lug and a second lug of each cylindrical battery are positioned on the same welding surface, and the welding surface is a plane for performing welding operation on the first lugs and the second lugs of the cylindrical batteries respectively. So, because the first utmost point ear of all cylinder batteries all is located this face of weld with the second utmost point ear for when welding the utmost point ear of this battery module, need not overturn this battery module, improved the welding efficiency of battery module and the whole welding quality of battery module.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating a positional relationship between a first tab and a second tab according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a cylindrical battery according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a bus bar according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a first tab provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a second tab provided in an embodiment of the present application;
fig. 7 is a second schematic structural diagram of a cylindrical battery according to an embodiment of the present application.
Icon: 100-cylindrical batteries; 200-a second cover plate; 300-a first cover plate; 400-support column; 600-a limiting hole; 102-a first tab; 101-a second tab; 500-a bus; 501-pole lug through holes; 502-second matching identification; 1011-first matching identification; 1021-welding part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is noted that the terms "first", "second", "third", and the like are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery module provided in this embodiment, which includes a first cover plate 300, a second cover plate 200, a plurality of cylindrical batteries 100, and a plurality of support pillars 400. The plurality of cylindrical batteries 100 are located between the first cover plate 300 and the second cover plate 200, and the first cover plate 300 and the second cover plate 200 are connected by the support columns 400, so that the plurality of cylindrical batteries 100 are confined between the first cover plate 300 and the second cover plate 200.
Optionally, one end of the supporting pillar 400 is fixedly connected to the first cover plate 300; the second cover plate 200 is provided with holes at positions corresponding to the support posts 400, and the second cover plate 200 and the first cover plate 300 are fixed by screws penetrating through the holes. Thus, in the event of a failure of the cylindrical battery 100, disassembly for maintenance is facilitated.
Referring to fig. 2, the plurality of cylindrical batteries 100 are oriented in the same direction, i.e., the positive electrodes of all the cylindrical batteries 100 are located on the same side. The first tab 102 and the second tab 101 of the plurality of cylindrical batteries 100 are located on the same welding surface, and the welding surface is a plane for performing welding operation on the first tab 102 and the second tab 101 of the plurality of cylindrical batteries 100 respectively. Thus, when the plurality of cylindrical batteries 100 are welded, the welding operation of the first tab 102 and the second tab 101 of each cylindrical battery 100 can be completed on one side of the battery module, and the assembly efficiency of the battery module is improved.
Optionally, in the embodiment of the present application, the welding surface is located on the same side as the second cover plate 200. Since the first tab 102 and the second tab 101 of the cylindrical batteries 100 are located on the same welding surface, the other surface of the plurality of cylindrical batteries 100 does not need to be welded (i.e., the plane on which the first cover plate 300 is located).
Further, referring to fig. 1 again, the first cover plate 300 is provided with the limiting holes 600 arranged in staggered rows and the limiting holes 600. Slightly larger than the diameter of the cylindrical battery 100, so that the cylindrical battery 100 can be just placed in the limiting hole 600. Therefore, the battery module can avoid the position of the cylindrical battery 100 from shifting due to external shaking in a specific use scene.
Optionally, referring to fig. 2 again, since the first tab 102 and the second tab 101 of each cylindrical battery 100 are located on the same side, in order to avoid that the first tab 102 and the second tab 101 of the same cylindrical battery 100 are welded together by mistake during welding, which causes a short circuit of the cylindrical battery 100 during welding, and further causes an explosion of the short-circuited cylindrical battery 100, thereby causing a production accident. The first tab 102 and the second tab 101 of the cylindrical battery 100 extend in opposite directions at the weld face.
Optionally, the plurality of cylindrical batteries 100 are respectively installed in the limiting holes 600, so that the plurality of cylindrical batteries 100 are arranged in a staggered array. Referring to fig. 2 again, a bus bar 500 is disposed between the adjacent first row of cylindrical batteries 100 and the adjacent second row of cylindrical batteries 100, and each first tab 102 of the first row of cylindrical batteries 100 is electrically connected to each second tab 101 of the second row of cylindrical batteries 100 through the bus bar 500.
Optionally, each first tab 102 in the first row of cylindrical batteries 100 is welded on the bus bar 500, so that the first row of cylindrical batteries 100 are connected in parallel. Likewise, each second tab 101 of the second row of cylindrical batteries 100 is welded on the bus bar 500, so that the second row of cylindrical batteries 100 are connected in parallel. Since the first tab 102 of the first row of cylindrical batteries 100 and the second tab 101 of the second row of cylindrical batteries 100 are welded on the bus bar 500, the first row of cylindrical batteries 100 and the second row of cylindrical batteries 100 are respectively connected in series as a whole.
Optionally, referring to fig. 3, the first tab 102 corresponds to a first electrode which is a negative electrode of the cylindrical battery 100. Since the metal skin wrapping the outer side of the cylindrical battery 100 is the negative electrode of the cylindrical battery 100, the first tab 102 is a negative electrode tab pre-disposed on the metal skin of the outer side of the cylindrical battery 100. Thus, when welding the negative electrode tab of the cylindrical battery 100, only one end of the negative electrode tab, which is far away from the metal skin outside the cylindrical battery 100, needs to be welded. Compared with the mode of wire-drawing welding, the welding frequency of the battery module in the welding process is reduced by arranging the negative electrode lug in advance on the metal surface of the outer side of the cylindrical battery 100.
Optionally, the bus bar 500 is disposed in a gap between the first row of cylindrical batteries 100 and the second row of cylindrical batteries 100.
Optionally, the bus bar 500 is mounted on the upper surface of the second cover plate 200. In order to electrically connect the first tab 102 of each cylindrical battery 100 with the bus plate on the second cap plate 200. The second cap plate 200 is provided with an opening at the position of the second tab 101 of each cylindrical battery 100 so that the second tab 101 of each cylindrical battery 100 can be led out from the corresponding opening.
Optionally, in order to fix the bus bar 500 disposed on the upper surface of the second cover plate 200, the surface of the second cover plate 200 is provided with a groove having the same shape and size as the bus bar 500, and the bus bar 500 is disposed in the groove.
For example, in one possible example, a surface of the bus bar 500 contacting the second cover plate 200 is coated with a high-viscosity silicone, so that the bus bar 500 is firmly attached to the second cover plate 200.
For example, in another possible example, the bus bar 500 is fixed in the groove of the second cover plate 200 by a rivet.
Optionally, in order to prevent a short circuit between the bus bars 500 disposed on the upper surface of the second cover plate 200, the second cover plate 200 is an insulating material, such as engineering plastic.
Referring to fig. 4, the bus bar 500 is provided with tab through holes 501 corresponding to each first tab 102 in the first row of cylindrical batteries 100. Referring to fig. 2 again, each first tab 102 of the first row of cylindrical batteries 100 is led out from the corresponding tab through hole 501 to be electrically connected to the bus bar 500.
Optionally, the welded portion of each first tab 102 of the first row of cylindrical batteries 100 led out from the corresponding through hole is elastically attached to the bus bar 500. Therefore, each first electrode tab in the first row of cylindrical batteries 100 is tightly attached to the bus bar 500 under the action of elasticity, and the welding success rate is ensured.
For example, referring to fig. 5, in one possible example, each first tab 102 of the first row of cylindrical batteries 100 is bent vertically downward at a predetermined angle from the horizontal direction at the welded portion 1021 led out from the corresponding through hole. In this way, the welding part 1021, at which each first tab 102 in the first row of cylindrical batteries 100 is drawn out from the corresponding through hole, is elastically attached to the bus bar 500. The situation that the welding part 1021 led out from the corresponding through hole of each first tab 102 in the first row of cylindrical batteries 100 is suspended to cause no contact with the bus bar 500 is avoided, and further the welding quality is influenced.
Optionally, referring to fig. 2 again, the second electrode corresponding to the second tab 101 is the positive electrode of the cylindrical battery 100, the second tab 101 of each cylindrical battery 100 is a metal sheet, and before welding the second tab 101 of each cylindrical battery 100, the second tab 101 of each cylindrical battery 100 needs to be placed at a preset position of the busbar 500, so that one end of the second tab 101 is located at the preset position of the busbar 500, and the other end of the second tab 101 is located just above the second tab 101 of the cylindrical battery 100 corresponding to the second electrode, so as to facilitate welding. For this purpose, the second cap plate 200 is further opened with an opening at a position corresponding to the positive electrode of each cylindrical battery 100.
Optionally, one end of the second pole ear 101 away from the second motor is provided with a first matching identifier. The bus bar 500 is further provided with a second matching identifier 502 corresponding to each first matching identifier in the second row of cylindrical batteries 100, and the second matching identifier 502 is used for being matched with the first matching identifier in the second row of cylindrical batteries 100 to fix each second pole ear 101 in the second row of cylindrical batteries 100 to a preset position of the bus bar 500.
Optionally, referring to fig. 4 and fig. 6 again, the first matching identifier 1011 and the second matching identifier 502 are through holes with the same size. The through holes with the same size are used to position the second tab 101 placed on the bus bar 500, that is, the through holes of the second tab 101 and the through holes of the bus bar 500 are completely matched, which indicates that the second tab 101 is correctly placed.
In a possible example, since the second tab 101 is a through hole having the same size as the second matching mark 502 on the busbar 500 via the first matching mark 1011, the second tab 101 of each cylindrical battery 100 is fixed to the busbar 500 at a predetermined position by a rivet passing through the through hole.
In another possible example, the second tab 101 of each cylindrical battery 100 is fixed to a predetermined position of the bus bar 500 by means of laser welding.
Optionally, referring to fig. 7, the cylindrical battery 100 is provided with a first tab 102 and a second tab 101 in advance. The first tab 102 is a negative tab, and the second tab 101 is a positive tab. The cylindrical batteries 100 are placed in the limiting holes 600 of the first cover plate 300, so that the plurality of cylindrical batteries 100 are arranged in the arrangement manner of the limiting holes 600. Since the cylindrical battery 100 is provided with the first tab 102 and the second tab 101 in advance, when the welding surface welds the first tab 102 and the second tab 101, only the first tab 102 and the second tab 101 of each cylindrical battery 100 need to be welded to the bus bar 500, so that the welding efficiency is improved.
To sum up, the embodiment of the application provides a battery module and a cover plate, which are applied to the field of batteries. The battery module comprises a plurality of cylindrical batteries with the same orientation, wherein a first lug and a second lug of each cylindrical battery are positioned on the same welding surface, and the welding surface is a plane for performing welding operation on the first lugs and the second lugs of the cylindrical batteries respectively. So, because the first utmost point ear of all cylinder batteries all is located this face of weld with the second utmost point ear for when welding the utmost point ear of this battery module, need not overturn this battery module, improved the welding efficiency of battery module and the whole welding quality of battery module.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for various embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and all such changes or substitutions are included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The battery module is characterized by comprising a plurality of cylindrical batteries which are uniformly oriented, wherein each cylindrical battery comprises a first tab and a second tab;
the first electrode lugs and the second electrode lugs of the cylindrical batteries are located on the same welding surface, and the welding surface is a plane for performing welding operation on the first electrode lugs and the second electrode lugs of the cylindrical batteries respectively.
2. The battery module according to claim 1, wherein the first tab and the second tab extend in opposite directions at the weld face.
3. The battery module according to claim 1, wherein the plurality of cylindrical batteries are arranged in staggered rows, a bus bar is disposed between adjacent first row of cylindrical batteries and second row of cylindrical batteries, and each first tab of the first row of cylindrical batteries is electrically connected to each second tab of the second row of cylindrical batteries through the bus bar.
4. The battery module according to claim 3, wherein the bus bar is provided with a tab through hole corresponding to each first tab in the first row of cylindrical batteries, and each first tab in the first row of cylindrical batteries is led out from the corresponding tab through hole and electrically connected with the bus bar.
5. The battery module according to claim 4, wherein the welded part of each first tab of the first row of cylindrical batteries led out from the corresponding through hole is elastically attached to the bus bar.
6. The battery module according to claim 5, wherein the first tab is a negative tab, and the negative tab is a metal sheet disposed on the metal surface outside the cylindrical battery.
7. The battery module as set forth in claim 3, wherein the second tab is provided with a first matching identifier, the bus bar is further provided with a second matching identifier corresponding to each first matching identifier in the second row of cylindrical batteries, and the second matching identifier is used for being matched with the first matching identifier in the second row of cylindrical batteries to fix each second tab in the second row of cylindrical batteries to a preset position of the bus bar.
8. The battery module as set forth in claim 7, wherein the first and second matching marks are positioning through holes having the same size.
9. A battery module cover plate applied to the battery module of claim 1, wherein the battery module cover plate comprises a first cover plate and a second cover plate respectively covering two ends of the battery module, and the first cover plate and the second cover plate are used for fixing the plurality of cylindrical batteries;
the plurality of cylindrical batteries are arranged on the first cover plate in a staggered and aligned manner, and a bus bar is arranged between the adjacent first row of cylindrical batteries and the second row of cylindrical batteries;
the second cover plate is located the face of weld, the busbar set up in the upper surface of second cover plate, every first utmost point ear in the first row of cylinder battery with every second utmost point ear in the second row of cylinder battery passes through busbar electric connection.
10. The battery module cover plate according to claim 9, wherein the first cover plate is provided with limiting holes arranged in staggered and aligned rows, and the plurality of cylindrical batteries are respectively placed in the limiting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487940.2U CN210129548U (en) | 2019-09-06 | 2019-09-06 | Battery module and cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487940.2U CN210129548U (en) | 2019-09-06 | 2019-09-06 | Battery module and cover plate |
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| Publication Number | Publication Date |
|---|---|
| CN210129548U true CN210129548U (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921487940.2U Active CN210129548U (en) | 2019-09-06 | 2019-09-06 | Battery module and cover plate |
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| CN (1) | CN210129548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151307A1 (en) * | 2022-02-11 | 2023-08-17 | 湖北亿纬动力有限公司 | Wire harness isolation plate and battery module |
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2019
- 2019-09-06 CN CN201921487940.2U patent/CN210129548U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151307A1 (en) * | 2022-02-11 | 2023-08-17 | 湖北亿纬动力有限公司 | Wire harness isolation plate and battery module |
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