CN222530743U - Composite busbar assembly and power battery - Google Patents
Composite busbar assembly and power battery Download PDFInfo
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- CN222530743U CN222530743U CN202420876626.8U CN202420876626U CN222530743U CN 222530743 U CN222530743 U CN 222530743U CN 202420876626 U CN202420876626 U CN 202420876626U CN 222530743 U CN222530743 U CN 222530743U
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Abstract
The application provides a composite busbar assembly and a power battery, wherein the composite busbar assembly comprises a serial busbar aluminum and a serial busbar copper, a deformation part is arranged between a first flat plate part and a second flat plate part, the deformation part is connected with the first flat plate part and the second flat plate part and allows movement deformation of the first flat plate part and the second flat plate part, the serial busbar copper is stacked on the serial busbar aluminum along the up-down direction based on the movement deformation of the deformation part on the first flat plate part and the second flat plate part and adapts to the expansion of a first battery core or a second battery core, the serial busbar copper is welded on the serial busbar aluminum under the same thickness of the composite busbar assembly, the serial busbar copper is a copper piece, the conductivity of the serial busbar copper is larger than that of the serial busbar aluminum, and the conductive effect of the composite busbar assembly is increased based on the conductive capability of the serial busbar copper so as to meet the overcurrent requirement.
Description
Technical Field
The utility model relates to the technical field of composite busbar assemblies, in particular to a composite busbar assembly and a power battery.
Background
Along with the development of technology, a power battery is a power source for providing power for tools, and is a storage battery for providing power for electric automobiles, electric trains, electric bicycles and golf carts.
In the prior art, existing power cells include a series buss bar of aluminum
The composite busbar comprises a first flat plate part, a second flat plate part and a deformation part, wherein the first flat plate part is used for being welded on the positive electrode of a first electric core by laser, the second flat plate part is used for being welded on the negative electrode of a second electric core by laser, the deformation part is respectively connected with the first flat plate part and the second flat plate part, at the moment, the serial bus aluminum bar is used as an integral aluminum piece, and the serial bus aluminum bar is used for conducting electricity, so that the traditional composite busbar is poor in conducting effect, and the conducting effect needs to be improved, and the thickness of the composite busbar needs to be increased.
Disclosure of utility model
The utility model aims to provide a composite busbar assembly and a power battery, wherein a serial bus copper bar is welded on a serial bus aluminum bar under the same thickness of the composite busbar assembly, the serial bus copper bar is a copper piece, the conductivity of the serial bus copper bar is larger than that of the serial bus aluminum bar, and the conductive capacity of the serial bus copper bar is based on the conductive capacity of the serial bus copper bar, so that the conductive effect of the composite busbar assembly is increased by arranging the serial bus copper bar, and the overcurrent requirement is met.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
A composite busbar assembly for use in a power cell, the composite busbar assembly comprising:
The serial bus aluminum bar comprises a first flat plate part, a second flat plate part and a deformation part, wherein the first flat plate part is used for being welded on an anode of a first electric core by laser, the second flat plate part is used for being welded on a cathode of a second electric core by laser, the movement of the first flat plate part and the second flat plate part is influenced along with the expansion of the first electric core or the second electric core, the deformation part is positioned between the first flat plate part and the second flat plate part, and the deformation part is connected with the first flat plate part and the second flat plate part and allows the movement and the deformation of the first flat plate part and the second flat plate part;
The copper alloy wire comprises a series bus copper bar, wherein the series bus copper bar is stacked on the series bus aluminum bar along the up-down direction, the series bus copper bar is welded on the series bus aluminum bar, the series bus copper bar is a copper piece, and the conductivity of the series bus copper bar is larger than that of the series bus aluminum bar.
Optionally, the lower side wall of the serial bus aluminum bar is welded to the anode of the first cell and the cathode of the second cell;
the serial bus copper bar is positioned on the upper side of the serial bus aluminum bar and welded on the serial bus aluminum bar through polymer diffusion.
Optionally, the serial bus copper bar and the serial bus aluminum bar are flush in the up-down direction;
The thickness of the serial bus copper bar is equal to or unequal to the thickness of the serial bus aluminum bar.
Optionally, the tandem busbar copper bar is provided with and dodges the hole, dodges the hole for the tandem busbar aluminium bar is arranged with the welding position between first electric core or the second electric core.
Optionally, the avoiding holes are round holes, square holes or special-shaped holes.
Optionally, the flatness of the first flat plate portion and the flatness of the second flat plate portion are both less than or equal to 0.1 mm.
Optionally, the deformation is arranged in an arch or serpentine arrangement.
Optionally, when the deformation part is arranged in an arch shape, the deformation part protrudes towards one side of the serial bus aluminum bar, which is away from the serial bus copper bar, in an arch shape;
the series bus bar is provided with a first arched portion, and the first arched portion is adapted to the arched groove.
Optionally, when the deformation part is arranged in a serpentine shape, the deformation part protrudes towards one side of the serial bus aluminum bar, which is away from the serial bus copper bar, in an arch shape;
The series connection busbar copper is provided with a first arc part, and the first arc part is adapted to the arc groove.
The power battery comprises the composite busbar assembly, a first electric core and a second electric core, wherein the composite busbar assembly is connected with the first electric core and the second electric core.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model provides a composite busbar assembly and a power battery, wherein a serial bus aluminum bar comprises a first flat plate part, a second flat plate part and a deformation part, the first flat plate part is used for being welded on the positive electrode of a first electric core through laser, the second flat plate part is used for being welded on the negative electrode of a second electric core through laser, the movement of the first flat plate part and the second flat plate part is influenced along with the expansion of the first electric core or the second electric core, the deformation part is arranged between the first flat plate part and the second flat plate part, the deformation part is connected with the first flat plate part and the second flat plate part and allows the movement deformation of the first flat plate part and the second flat plate part, the serial bus copper bar is stacked on the serial bus aluminum bar along the up-down direction based on the expansion of the first flat plate part or the second electric core, the serial bus copper bar is welded on the serial bus aluminum bar with the same thickness of the composite busbar assembly, the serial bus copper bar is a copper piece, the conductivity of the serial bus copper bar is larger than that of the serial bus aluminum bar, the serial bus copper bar can be arranged on the basis of the bus copper bar, the serial bus copper bar can meet the requirement of the serial bus assembly, and the serial bus copper bar can flow through the composite busbar assembly.
Drawings
In order to more clearly describe the technical solution in the embodiments of the present application, the following description will be made with reference to the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.
Fig. 1 shows a schematic view of a composite busbar assembly according to a first embodiment of the present application.
Fig. 2 shows a front view of a composite busbar assembly according to a first embodiment of the present application.
Fig. 3 shows a schematic diagram of a serial buss aluminum bar of a composite buss assembly in accordance with a first embodiment of the present application.
Fig. 4 shows a schematic diagram of a serial bus copper bar of a composite bus bar assembly according to a first embodiment of the present application.
Fig. 5 shows a schematic view of a composite busbar assembly according to a second embodiment of the present application.
Reference numerals
100. A composite busbar assembly;
10. The aluminum bus is connected in series, and comprises 11 parts of a first flat plate part, 12 parts of a second flat plate part, 13 parts of a deformation part, 13a parts of an arch groove, 13b parts of a first arc groove;
20. The copper busbar is connected in series, and the copper busbar comprises 20a, avoiding holes, 21, a first arched part and 22, a first arc part.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
Referring to fig. 1 to 5, an embodiment of the present application provides a composite busbar assembly 100, wherein the composite busbar assembly 100 is applied to a power battery, the composite busbar assembly 100 includes a serial bus aluminum bar 10 and a serial bus copper bar 20, and the serial bus copper bar 20 is disposed on the upper side of the serial bus aluminum bar 10.
In the embodiment of the application, the serial bus aluminum bar 10 comprises a first flat plate part 11, a second flat plate part 12 and a deformation part 13, wherein the first flat plate part 11 is used for being welded on the positive electrode of a first battery cell, the second flat plate part 12 is used for being welded on the negative electrode of a second battery cell, the movement of the first flat plate part 11 and the second flat plate part 12 is influenced along with the expansion of the first battery cell or the second battery cell, the deformation part 13 is positioned between the first flat plate part 11 and the second flat plate part 12, and the deformation part 13 is connected with the first flat plate part 11 and the second flat plate part 12 and allows the movement of the first flat plate part 11 and the second flat plate part 12 to deform.
At this time, the serial bus aluminum bar 10 is composed of a first flat plate portion 11, a second flat plate portion 12 and a deformation portion 13, the first flat plate portion 11 is used for laser welding to the positive electrode of the first electric core so that the positive electrode of the first electric core is fixed to the first flat plate portion 11, the positive electrode of the first electric core and the first flat plate portion 11 are conveniently electrified, the second flat plate portion 12 is used for laser welding to the negative electrode of the second electric core so that the negative electrode of the second electric core is fixed to the second flat plate portion 12, and the negative electrode of the second electric core and the second flat plate portion 12 are conveniently electrified.
The deformation portion 13 is positioned between the first flat plate portion 11 and the second flat plate portion 12, the deformation portion 13 connects the first flat plate portion 11 and the second flat plate portion 12, movement deformation of the first flat plate portion 11 and the second flat plate portion 12 is allowed, movement deformation of the first flat plate portion 11 and the second flat plate portion 12 is handled based on the deformation portion 13, and expansion of the first electric core or the second electric core is adapted.
In the embodiment of the application, the series bus copper bar 20 is arranged on the upper side of the series bus aluminum bar 10, the series bus copper bar 20 is stacked on the series bus aluminum bar 10 along the up-down direction, the series bus copper bar 20 is welded on the series bus aluminum bar 10 under the same thickness of the composite bus assembly so that the series bus copper bar 20 is fixed on the series bus aluminum bar 10, the series bus copper bar 20 is a copper piece, the conductivity of the series bus copper bar 20 is larger than that of the series bus aluminum bar 10, and the conductivity of the series bus copper bar 20 is based on the conductivity of the series bus copper bar 20 so as to increase the conductivity effect of the composite bus assembly 100 by arranging the series bus copper bar 20, thereby meeting the overcurrent requirement.
The lower side wall of the serial bus aluminum bar 10 is welded to the positive electrode of the first cell and the negative electrode of the second cell so that the positive electrode of the first cell and the negative electrode of the second cell are fixed on the lower side wall of the serial bus aluminum bar 10, the serial bus copper bar 20 is positioned on the upper side of the serial bus aluminum bar 10 and welded to the serial bus aluminum bar 10 through polymer diffusion, and therefore the serial bus copper bar 20 is fixed on the serial bus aluminum bar 10.
In the embodiment of the application, the serial bus copper bars 20 and the serial bus aluminum bars 10 are parallel and level along the up-down direction, and the thickness of the serial bus copper bars 20 and the thickness of the serial bus aluminum bars 10 are in equal relation or unequal relation so as to facilitate overlapping of the serial bus copper bars 20 and the serial bus aluminum bars 10, thereby facilitating conduction of the serial bus copper bars 20 and the serial bus aluminum bars 10 and further improving the conduction effect of the composite bus bar assembly 100.
The series connection busbar copper 20 is provided with an avoidance hole 20a, and the avoidance hole 20a is arranged relative to a welding position between the series connection busbar aluminum 10 and the first electric core or the second electric core, so that the first electric core or the second electric core is connected with the series connection busbar copper 20 and the series connection busbar aluminum 10 through the avoidance hole 20a, thereby facilitating improvement of the conductive effect of the composite busbar assembly 100, and the avoidance hole 20a is a circular hole, a square hole or a special-shaped hole.
The flatness of the first flat plate portion 11 and the flatness of the second flat plate portion 12 are both less than or equal to 0.1 mm, improving the smoothness of the composite busbar assembly 100.
In the embodiment of the application, the deformation part 13 is arranged in an arch shape or in a serpentine shape, in the first embodiment, when the deformation part 13 is arranged in an arch shape, the deformation part 13 protrudes towards one side of the serial bus aluminum bar 10, which faces away from the serial bus copper bar 20, so that one side of the serial bus aluminum bar 10, which faces towards the serial bus copper bar 20, is flush, the deformation part 13 is provided with an arch-shaped groove 13a, the serial bus copper bar 20 is provided with a first arch part 21, the first arch part 21 is matched with the arch-shaped groove 13a so that the first arch part 21 is accommodated in the arch-shaped groove 13a, and the outer side wall of the first arch part 21 is contacted with the inner side wall of the arch-shaped groove 13a, so that the deformation part 13 is contacted with the serial bus copper bar 20 through the arch-shaped groove 13a and the first arch part 21.
In the second embodiment, when the deformation portion 13 is arranged in a serpentine shape, the deformation portion 13 protrudes toward one side of the serial bus aluminum bar 10 facing away from the serial bus copper bar 20 in an arch shape so that one side of the serial bus aluminum bar 10 facing toward the serial bus copper bar 20 is flush, the deformation portion 13 is provided with a first circular arc groove 13b, the serial bus copper bar 20 is provided with a first circular arc portion 22, the first circular arc portion 22 is adapted to the circular arc groove so that the first circular arc portion 22 is accommodated in the first circular arc groove 13b, and the outer side wall of the first circular arc portion 22 is in contact with the inner side wall of the first circular arc groove 13b, so that the deformation portion 13 is in contact with the serial bus copper bar 20 through the first circular arc groove 13b and the first circular arc portion 22.
In a third embodiment, a power battery comprises a composite busbar assembly 100, a first cell and a second cell, wherein the composite busbar assembly 100 is connected with the first cell and the second cell so as to increase the conductive effect of the power battery through the composite busbar assembly 100 and meet the overcurrent requirement.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model provides a composite busbar assembly 100 and a power battery, wherein a serial busbar aluminum 10 comprises a first flat plate part 11, a second flat plate part 12 and a deformation part 13, the first flat plate part 11 is used for being welded to the positive electrode of a first electric core, the second flat plate part 12 is used for being welded to the negative electrode of a second electric core, the movement of the first flat plate part 11 and the second flat plate part 12 is influenced along with the expansion of the first electric core or the second electric core, the deformation part 13 is positioned between the first flat plate part 11 and the second flat plate part 12, the deformation part 13 is connected with the first flat plate part 11 and the second flat plate part 12 and allows the movement deformation of the first flat plate part 11 and the second flat plate part 12, the deformation part 13 is used for being deformed on the basis of the movement of the first flat plate part 11 and the second flat plate part 12 and adapting to the expansion of the first electric core or the second electric core, a serial busbar copper 20 is stacked on the serial busbar aluminum 10 along the upper and lower direction, the serial busbar copper 20 is welded on the serial busbar aluminum 10, the serial busbar copper 20 is a copper piece, the deformation part 13 is positioned between the first flat plate part 11 and the second flat plate part 12, the deformation part 12 is used for being deformed on the basis of the movement deformation of the first flat plate part 12 and allowing the movement deformation of the first flat plate part 12 and the first flat plate part 12 to be deformed.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420876626.8U CN222530743U (en) | 2024-04-24 | 2024-04-24 | Composite busbar assembly and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420876626.8U CN222530743U (en) | 2024-04-24 | 2024-04-24 | Composite busbar assembly and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222530743U true CN222530743U (en) | 2025-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420876626.8U Active CN222530743U (en) | 2024-04-24 | 2024-04-24 | Composite busbar assembly and power battery |
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| Country | Link |
|---|---|
| CN (1) | CN222530743U (en) |
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- 2024-04-24 CN CN202420876626.8U patent/CN222530743U/en active Active
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