CN114142180A - Battery adapting member, battery and battery assembling method - Google Patents
Battery adapting member, battery and battery assembling method Download PDFInfo
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- CN114142180A CN114142180A CN202111438359.3A CN202111438359A CN114142180A CN 114142180 A CN114142180 A CN 114142180A CN 202111438359 A CN202111438359 A CN 202111438359A CN 114142180 A CN114142180 A CN 114142180A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000011888 foil Substances 0.000 claims abstract description 92
- 238000003825 pressing Methods 0.000 claims abstract description 68
- 238000003466 welding Methods 0.000 claims abstract description 32
- 230000000670 limiting effect Effects 0.000 claims description 40
- 239000012528 membrane Substances 0.000 claims description 16
- 239000000872 buffer Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims 1
- 210000004027 cell Anatomy 0.000 description 33
- 230000008569 process Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 210000005056 cell body Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000006173 Good's buffer Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The embodiment of the invention provides a battery switching component, a battery and a battery assembling method, and relates to the technical field of batteries. Compared with the prior art, the battery switching component provided by the invention has the advantages that the foil electrode lugs are pressed between the electrical pressing sub-sheets and the electrical switching mother sheets, so that the contact area of a welding area formed by the bearing groove position is larger, and the flow guiding and heat transferring capacity of the battery switching component is improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery adapting component, a battery and a battery assembling method.
Background
The current battery technology generally adopts active material to coat on the ultra-thin foil, draws forth utmost point ear by local foil uncoated area, converges to terminal utmost point post through the adaptor piece and just can supply external circuit to use, therefore reasonable adaptor piece design will directly influence battery performance good and bad. Currently, among three batteries, cylindrical batteries, soft packages and square batteries, the adapter sheet technology adapted to the square batteries is the most complicated.
The current adapter plate only adopts a single-side welding technology, namely, the lug is directly welded on the adapter plate, so that the current-guiding and heat-dissipating capabilities of the adapter plate are weaker.
Disclosure of Invention
The present invention provides a battery adapting member, a battery and a method for assembling the battery, which have strong flow guiding and heat dissipating capabilities.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides a battery adapting member, including an electrical adapting mother sheet and at least one electrical pressing sub-sheet, wherein a surface of one side of the electrical adapting mother sheet is provided with at least one receiving slot for engaging a foil tab disposed at an end of a cell main body, the electrical pressing sub-sheet is disposed on the receiving slot and connected with the electrical adapting mother sheet, and the electrical pressing sub-sheet is used for being attached to the foil tab, so that the foil tab is pressed between the electrical pressing sub-sheet and the electrical adapting mother sheet.
In an optional embodiment, the shape of the electrical pressing sub-piece is matched with the shape of the receiving groove, and the electrical pressing sub-piece is welded to the receiving groove.
In an optional embodiment, an edge weld of the electrical pressing sub-sheet is disposed at an edge of the receiving slot, and a plurality of welding spots stitch-welded to the electrical transfer mother sheet are disposed in the middle of the electrical pressing sub-sheet, so that the electrical pressing sub-sheet, the foil tab, and the electrical transfer mother sheet are welded together.
In an optional implementation mode, the electrical property switching master slice comprises a transverse slice, a vertical slice and a connecting slice which are arranged integrally, the transverse slice is connected with one end of the connecting slice, one end of the vertical slice along the length direction is connected with the other end of the connecting slice, the bearing slot is arranged at two side edges of the vertical slice along the width direction, and the connecting slice is bent so that the transverse slice and the vertical slice are arranged at an included angle.
In an alternative embodiment, the width of the connecting piece is smaller than both the width of the vertical piece and the width of the horizontal piece.
In an optional embodiment, the battery adapter component further includes an insulating bottom membrane, the vertical piece and a portion of the connecting piece are attached to one side surface of the insulating bottom membrane, and the insulating bottom membrane is used for electrically isolating the electrical adapter mother piece from the battery cell main body.
In an optional embodiment, a first limiting post is disposed on the insulating base film, a first limiting hole is disposed on the connecting sheet, and the first limiting post is disposed in the first limiting hole in a matching manner.
In an optional embodiment, a second limiting column is arranged on the insulating base film, a second limiting hole is arranged on the vertical film, and the second limiting column is arranged in the second limiting hole in a matching manner.
In optional implementation, at least one side edge of insulating bottom diaphragm is provided with the buffering post, at least one side edge of riser is provided with the breach of stepping down, the buffering post inlays to be established in the breach of stepping down to be used for supporting and holding the surface of foil utmost point ear.
In a second aspect, the present invention provides a battery, including a cell main body and the battery adapter member according to any one of the foregoing embodiments, wherein a foil tab is disposed at an end of the cell main body, the cell main body is disposed at one side of the electrical adapter mother sheet, the receiving slot is disposed on a side surface of the electrical adapter mother sheet departing from the cell main body, and the foil tab is bent and engaged with the receiving slot and is press-fitted between the electrical press-fitting sub-sheet and the electrical adapter mother sheet.
In a third aspect, the present invention provides a method for assembling a battery, which is used for assembling the battery, and the method includes:
one side surface of the foil electrode lug is abutted against the side edge of the electrical transfer mother plate;
and the electric pressing sub-sheets are loaded into the bearing groove position along a direction parallel to the bearing groove position, and the foil electrode lugs are bent and attached into the bearing groove position.
The beneficial effects of the embodiment of the invention include, for example:
according to the battery switching component provided by the invention, the bearing groove is formed in one side surface of the electrical switching master piece and is used for being jointed with the foil lug arranged at the end part of the electric core main body, the electrical pressing sub-piece is arranged on the bearing groove and is connected with the electrical switching master piece, and the electrical pressing sub-piece is used for being attached to the foil lug so that the foil lug can be pressed between the electrical pressing sub-piece and the electrical switching master piece. Compared with the prior art, the battery switching component provided by the invention has the advantages that the foil electrode lugs are pressed between the electrical pressing sub-sheets and the electrical switching mother sheets, so that the contact area of a welding area formed by the bearing groove position is larger, and the flow guiding and heat transferring capacity of the battery switching component is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a battery adapter according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the electrical connection mother plate shown in FIG. 1;
FIG. 3 is a schematic structural diagram of the insulating base membrane of FIG. 1;
fig. 4 is a schematic view illustrating an assembly process of one side of a battery transit member according to a first embodiment of the present invention;
fig. 5 is a schematic view illustrating an assembly process of the other side of the battery transit member according to the first embodiment of the present invention;
fig. 6 is a schematic view illustrating an assembly structure of a battery adapter according to a first embodiment of the present invention.
Icon: 100-a battery adapting member; 110-electrical switching master slice; 111-horizontal slice; 113-risers; 115-connecting pieces; 117-abdication gap; 130-electrical pressing sub-pieces; 150-a receiving slot position; 170-insulating bottom membrane; 171-a first restraint post; 173-first limiting aperture; 175-a second restraint post; 177-a second limit hole; 179-buffer column; 200-a cell body; 210-foil tabs.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 invention.
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 invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
As disclosed in the background art, in the prior art, the battery technology generally adopts an active material coated on an ultrathin foil, a tab is led out from a local uncoated region of the foil to form, and the tab is converged on a terminal pole through an adapter sheet to be used by an external circuit, so that the quality of the battery performance is directly influenced by reasonable design of the adapter sheet. In the field of square batteries, the current patch technology has several key requirements: high internal space utilization rate, excellent overcurrent heat-conducting capacity, simple process implementation mode, higher reliability and the like, but the existing switching technology is difficult to take all the characteristics into consideration. Moreover, the common adapter plate and the tab adopt an upper single-side welding technology, that is, the foil tab is directly welded on the surface of the adapter plate and then is connected with the upper pole post after being bent by the adapter plate, wherein the welding reliability between the foil tab and the adapter plate is poor, and the effective welding contact area of the welding zone is small, so that the flow guiding and heat dissipation capability of the welding zone is poor, and the performance and reliability of the battery are further influenced.
In order to solve the problems, the invention provides a novel battery adapting component and a battery, which have strong flow guiding and heat dissipating capabilities and can effectively improve the performance and reliability of the battery. It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
First embodiment
Referring to fig. 1 to 6 in combination, the present embodiment provides a battery adapting member 100, which is suitable for a battery and is used for joining a foil tab 210 and a terminal on a top cap, and the battery adapting member 100 can greatly increase the welding area of the foil tab 210, so that the current guiding and heat dissipating capabilities of a welding area are strong, and a high space utilization rate and excellent reliability can be both considered.
The battery adapting member 100 provided by this embodiment includes an electrical adapting mother sheet 110 and at least one electrical pressing sub-sheet 130, wherein a side surface of the electrical adapting mother sheet 110 is provided with at least one receiving slot 150, the receiving slot 150 is used for engaging a foil tab 210 disposed at an end of a battery cell main body 200, the electrical pressing sub-sheet 130 is disposed on the receiving slot 150 and connected with the electrical adapting mother sheet 110, and the electrical pressing sub-sheet 130 is used for being attached to the foil tab 210, so that the foil tab 210 is pressed between the electrical pressing sub-sheet 130 and the electrical adapting mother sheet 110.
In the embodiment, the electrical adapter sheet 110 is used to join the foil tab 210 and the terminal on the top cover, so as to achieve the function of current collection, and the specific flow guiding principle thereof can refer to the existing adapter sheet. The electrical interposer mother chip 110 and the electrical compression sub-chip 130 are made of conductive metal, such as copper. In addition, during actual assembly, the foil tab 210 can be placed into the receiving slot 150, the electrical pressing sub-piece 130 is covered on the receiving slot 150, and finally the electrical pressing sub-piece 130, the foil tab 210 and the electrical switching mother piece 110 are welded into a whole, so that the connection reliability and good flow guiding and heat dissipating capabilities are ensured. Specifically, a receiving slot 150 is disposed on a side surface of the electrical adapting mother plate 110, the receiving slot 150 is used for engaging a foil tab 210 disposed at an end of the electric core main body 200, the electrical pressing sub-plate 130 is disposed on the receiving slot 150 and connected to the electrical adapting mother plate 110, and the electrical pressing sub-plate 130 is attached to the foil tab 210, so that the foil tab 210 can be pressed between the electrical pressing sub-plate 130 and the electrical adapting mother plate 110, a double-sided welding technique is adopted for the foil tab 210, and the flow guiding and heat dissipating capabilities of the foil tab 210 and the battery adapting member 100 are improved.
It should be noted that, in this embodiment, the foil tab 210 is disposed at an end of the battery cell main body 200 and extends outward, and the foil tab 210 can be folded and disposed at the receiving slot 150, so that the battery cell main body 200 can be located behind the electrical property switching mother board 110, which undoubtedly greatly improves the space utilization.
It should be noted that in the present embodiment, two receiving slots 150 are oppositely disposed on the left and right sides of the electrical connection mother plate 110, and two electrical pressing sub-plates 130 are also provided, so that the foil tabs 210 on the two electrical core main bodies 200 can be welded. Of course, the number of the receiving slots 150 and the number of the electrical pressing sub-sheets 130 are not specifically limited, and may be increased or decreased according to actual situations.
The electrical switching master slice 110 comprises a transverse slice 111, a vertical slice 113 and a connecting slice 115 which are integrally arranged, wherein the transverse slice 111 is connected with one end of the connecting slice 115, one end of the vertical slice 113 along the length direction is connected with the other end of the connecting slice 115, a bearing slot 150 is arranged on two side edges of the vertical slice 113 along the width direction, and the connecting slice 115 is bent so that the transverse slice 111 and the vertical slice 113 are arranged at an included angle. Specifically, be 90 contained angles between horizontal piece 111 and the riser 113, horizontal piece 111 arranges along the horizontal direction promptly, and riser 113 arranges along vertical direction to form the connection structure of bending form, guaranteed the high space utilization of electrical property switching master slice 110 on the horizontal direction.
In this embodiment, the width of the connecting piece 115 is smaller than both the width of the vertical piece 113 and the width of the horizontal piece 111. Specifically, the horizontal piece 111, the vertical piece 113 and the connecting piece 115 are integrally arranged, and the connecting piece 115 adopts a narrowed structure, so that the connecting piece 115 has a smaller width and smaller bending resistance, and is more favorable for bending the horizontal piece 111 and the vertical piece 113.
In this embodiment, the shape of the electrical pressing sub-piece 130 is matched with the shape of the receiving slot 150, and the electrical pressing sub-piece 130 is welded on the receiving slot 150. Specifically, the edge of the electrical pressing sub-piece 130 can be tightly attached to the edge of the receiving groove 150, so as to ensure the welding effect of the electrical pressing sub-piece 130.
In this embodiment, the edge weld of the electrical pressing sub-sheet 130 is disposed at the edge of the receiving slot 150, and the middle portion of the electrical pressing sub-sheet 130 is disposed with a plurality of welding spots stitch-welded to the electrical transfer mother sheet 110, so that the electrical pressing sub-sheet 130, the foil tab 210 and the electrical transfer mother sheet 110 are welded together. Specifically, the edge weld of the electrical pressing sub-piece 130 is disposed at the edge of the receiving slot 150 and forms a weld at the edge, the electrical pressing sub-piece 130 is fixed to the receiving slot 150, and the middle portion of the electrical pressing sub-piece 130 is stitch-welded to the electrical adapting mother piece 110, so that the upper electrical pressing sub-piece 130, the middle foil tab 210, and the lower electrical adapting mother piece 110 can be welded together at the weld. This kind of welding mode makes foil utmost point ear 210 can press from both sides between electrical property pressfitting sub-piece 130 and electrical property switching master slice 110 more closely, has not only promoted the mechanical structure stability of whole welding region, has further increased the effective area of contact of welding department for the heat that foil utmost point ear 210 department produced can be more rapidly along riser 113 to horizontal piece 111 conduction, helps the improvement of water conservancy diversion, heat-sinking capability.
When actually welding the foil tab 210, the cell main body 200 is close to the vertical piece 113 from the left and right sides of the vertical piece 113, and the preset receiving slot 150 is sequentially covered with the foil tab 210 and the electrical pressing sub-piece 130. Specifically, the foil tab 210 extending from the end of the battery cell main body 200 is attached to the receiving slot 150, and then the electrical pressing sub-piece 130 is covered, at this time, the electrical pressing sub-piece 130 and the foil tab 210 need to be fixed, seam welding is performed along the boundary between the edge of the electrical pressing sub-piece 130 and the edge of the receiving slot 150, and then stitch welding is performed on the electrical pressing sub-piece 130 and the electrical transfer mother piece 110 along the welding spot in the middle of the electrical pressing sub-piece 130, so that the electrical pressing sub-piece 130, the foil tab 210 and the electrical transfer mother piece 110 are welded into a whole. After the welding is completed, the battery cell main body 200 can be simply folded towards the rear along the edge of the vertical piece 113, so that the foil tab 210 is folded, the welding and bending action of one of the foil tabs 210 is completed, and the space utilization rate of the foil tab can be greatly improved.
Referring to fig. 5 in combination, in the embodiment, since the two foil tabs 210 are disposed on the electric core main body 200, after welding of the foil tabs 210 is completed on one side, the foil tabs 210 on the other side are firstly vertically abutted against the edge of the vertical piece 113, that is, against the edge of the receiving slot 150, at this time, the foil tabs 210 are not yet in a bent state, and are kept perpendicular to the vertical piece 113, then the electrical pressing sub-pieces 130 are loaded into the receiving slot 150 along the parallel direction of the vertical piece 113, during the loading process, the electrical pressing sub-pieces 130 are pressed on the foil tabs 210, and the foil tabs 210 are bent and attached to the receiving slot 150, and the rest of the welding actions are consistent with the above welding process.
Referring to fig. 4 and 5 in combination, for the structure of the dual-cell main body 200, two foil tabs 210 are respectively disposed on the two cell main bodies 200, and a total of 4 foil tabs 210 may be joined to the two battery adapter members 100, wherein the foil tabs 210 at two ends of the first cell main body 200 may be all installed in the bearing slots 150 on the two vertical pieces 113 in a flat welding manner, the foil tab 210 at one end of the other cell main body 200 is in a flat welding manner, and the foil tab 210 at the other end may be joined in a cutting and pressing manner shown in fig. 5.
Further, the battery adapter member 100 further includes an insulating bottom membrane 170, the vertical piece 113 and a portion of the connecting piece 115 are attached to one side surface of the insulating bottom membrane 170, and the insulating bottom membrane 170 is used to electrically isolate the electrical adapter bus piece 110 from the cell body 200. Specifically, the insulating bottom membrane 170 is made of an insulating material, the folded battery cell main body 200 is located on one side of the insulating bottom membrane 170, which is far away from the vertical piece 113, and the insulating bottom membrane 170 can play an insulating role between the vertical piece 113 and the battery cell main body 200, so that the safety of the battery can be ensured.
In this embodiment, the insulating bottom diaphragm 170 is provided with a first limiting post 171, the connecting sheet 115 is provided with a first limiting hole 173, and the first limiting post 171 is disposed in the first limiting hole 173 in a matching manner. Specifically, here, the first stopper hole 173 may be a fusing hole provided in the width direction of the connection tab 115 such that the effective width of the connection tab 115 is further narrowed, and the connection tab 115 may be fused at the first stopper hole 173 when an overcurrent occurs, thereby securing the safety of the battery. After the fuse is fused, due to the limiting effect of the first limiting column 171, the connecting sheet 115 can be prevented from being displaced and being conducted again to cause safety accidents. Meanwhile, the first limiting column 171 and the first limiting hole 173 can also play a role in positioning during assembly, so that the connecting sheet 115 and the insulating bottom diaphragm 170 can be conveniently installed and positioned, and the assembly efficiency is improved.
It should be noted that, here, the first limiting hole 173 is a cross-shaped hole, and the first limiting column 171 is a cross-shaped column, which are adapted to each other, so as to facilitate the installation and positioning of the connecting sheet 115 and the insulating bottom diaphragm 170 in multiple directions. Of course, the shape of the first stopper hole 173 and the first stopper pillar 171 may be other shapes such as a rectangle or a diamond, and is not limited herein.
In this embodiment, the insulating bottom diaphragm 170 is provided with a second limiting post 175, the riser 113 is provided with a second limiting hole 177, and the second limiting post 175 is disposed in the second limiting hole 177 in a matching manner. Specifically, through setting up the spacing post 175 of second and the spacing hole 177 of second, can play the effect of location when the equipment, make things convenient for the installation location between riser 113 and the insulating base diaphragm 170, further promoted the packaging efficiency.
In this embodiment, at least one side edge of the insulating bottom diaphragm 170 is provided with a buffer column 179, at least one side edge of the vertical plate 113 is provided with an abdicating notch 117, and the buffer column 179 is embedded in the abdicating notch 117 and is used for abutting against the surface of the foil tab 210. Preferably, the both sides edge of insulating bottom diaphragm 170 all is provided with buffering post 179 in this embodiment, the both sides edge of riser 113 all is provided with the breach 117 of stepping down, and the length of buffering post 179 and the length looks adaptation of accepting slot position 150, the breach 117 of stepping down sets up the edge at two accepting slot positions 150, make buffering post 179 can correspond to inlay and establish in the breach 117 of stepping down, can play the effect of location installation on the one hand, on the other hand buffering post 179 can support and hold on foil tab 210 under fold condition, can release the stress that a large amount of foil tab 210 bent the department, avoid long-term use in-process foil tab 210 to take place to tear, the reliability of connecting has been guaranteed.
It should be noted that the buffer column 179 is made of an insulating non-hard material such as resin, which can perform a good buffer function.
In the present embodiment, the insulating base film 170 has both insulating and heat conducting functions. Specifically, the insulating base film 170 is formed of a high thermal conductive material, wherein the high thermal conductive material may be heat conductive silica gel, heat conductive ceramic, or heat dissipation silicone grease, which can have good thermal conductivity, so that heat generated at the foil tabs 210 can be uniformly and rapidly diffused toward the cross pieces 111.
It should be noted that, here, the insulating bottom diaphragm 170 can electrically isolate the cell main body 200 from the vertical plate 113 to ensure the safety of the battery, and can assist the heat to be conducted away along the main body of the vertical plate 113 to reduce the thermal influence on the region of the welding area adjacent to the main body. Meanwhile, the folded edge of the foil lug 210 is abutted against the buffer column 179, and no matter in the assembly process, the foil lug 210 is bent or the long-life use process in the later period, the stress at the bending part of the foil lug 210 is released to the upper surface of the buffer column 179 by a certain part, so that the potential damage or tearing risk at the foil lug 210 is reduced, and the connection reliability is ensured.
Meanwhile, because the width of the connecting sheet 115 is narrower than that of the transverse sheet 111 and the vertical sheet 113, the overcurrent heat conduction capability of the connecting sheet 115 is lower than that of the adjacent transverse sheet 111 and vertical sheet 113 in normal operation, the connecting sheet 115 can be attached to the insulating bottom diaphragm 170, auxiliary heat conduction is realized through the insulating bottom diaphragm 170, and the heat conduction from the vertical sheet 113 to the transverse sheet 111 is accelerated. Meanwhile, the first limiting post 171 and the first limiting hole 173 are engaged, the electrical switching bus bar 110 will be fused at the first limiting hole 173 under extreme conditions to achieve the effect of current limiting protection, and the insulating bottom membrane 170 tightly combined with the vertical piece 113 and the cross-shaped first limiting post 171 can prevent the residual connecting piece 115 or vertical piece 113 near the fusing point from freely moving, so that the electrical switching bus bar 110 is prevented from being switched on again and ignited, and the safety and reliability of the battery after being fused are greatly improved.
In summary, in the battery adapter member 100 provided in this embodiment, the receiving slot 150 is disposed on a side surface of the electrical adapter mother plate 110, the receiving slot 150 is used for engaging the foil tab 210 disposed at the end of the battery cell main body 200, the electrical pressing sub-plate 130 is disposed on the receiving slot 150 and connected to the electrical adapter mother plate 110, and the electrical pressing sub-plate 130 is used for being attached to the foil tab 210, so that the foil tab 210 can be pressed between the electrical pressing sub-plate 130 and the electrical adapter mother plate 110, a double-side welding technique is adopted for the foil tab 210, and the flow guiding and heat dissipating capabilities of the foil tab 210 and the battery adapter member 100 are improved. Meanwhile, the transverse sheets 111 and the vertical sheets 113 which are perpendicular to each other are connected through the connecting sheets 115, so that the space utilization rate of the battery adapting component 100 in the horizontal direction is realized. Simultaneously insulating bottom diaphragm 170 has realized two unifications of insulating and heat conduction function, has separated electrical property switching master slice 110 and electric core main part 200 on the one hand, has guaranteed battery safety, and on the other hand can help the regional heat of switching to conduct to horizontal piece 111 along riser 113 more fast to it is outside to dispel the heat to the battery finally. Meanwhile, through the engagement effect of the first limiting column 171 and the first limiting hole 173, safety accidents caused by reconduction after overcurrent fusing can be effectively avoided, and the safety of the battery is further improved.
Second embodiment
Referring to fig. 6 in combination, the present embodiment provides a battery, which includes a battery cell main body 200 and the battery adapter member 100 according to the first embodiment, and has high safety, good reliability, good current guiding and heat dissipating capabilities, and excellent performance.
The battery provided by this embodiment may be a secondary battery, and the battery includes a battery cell main body 200, a battery adapting member 100, a top cover and a housing case, wherein the battery cell main body 200 is housed in the housing case, the top cover is disposed at an upper opening of the housing case, the battery adapting member 100 includes an electrical adapting mother sheet 110 and at least one electrical pressing sub-sheet 130, at least one receiving slot 150 is disposed on a side surface of the electrical adapting mother sheet 110, and the electrical pressing sub-sheet 130 is disposed on the receiving slot 150 and connected to the electrical adapting mother sheet 110. The end of the cell main body 200 is provided with a foil tab 210, the cell main body 200 is disposed on one side of the electrical property switching mother piece 110, the receiving slot 150 is disposed on a side surface of the electrical property switching mother piece 110 departing from the cell main body 200, the foil tab 210 is bent and engaged with the receiving slot 150, and is pressed between the electrical property pressing sub-piece 130 and the electrical property switching mother piece 110.
With reference to fig. 4 and fig. 5, the present embodiment further provides a method for assembling a battery, for assembling the aforementioned battery, and the welding process of the battery may also refer to the first embodiment, where there are two battery cell main bodies 200, two ends of each battery cell main body 200 are provided with foil tabs 210, and the foil tabs are used to be attached to two electrical switching mother plates 110, there are two bearing slots 150 on each electrical switching mother plate 110, and there are two electrical pressing sub-plates 130, and the method provided in this embodiment includes the following steps:
s1: the foil tabs 210 at two ends of one of the cell main bodies 200 are respectively welded to the bearing slots 150 of the two cell adapting mother sheets 110, and the electrical pressing sub-sheets 130 are correspondingly attached to the two bearing slots 150.
S2: the foil tab 210 at one end of the other cell body 200 is welded to the carrying slot 150 of one of the cell adapting mother sheets 110, and the electrical pressing sub-sheets 130 are correspondingly attached to the carrying slot 150.
S3: the foil tab 210 at the other end of the other cell main body 200 is abutted against the side of the other electrical adapting mother plate 110.
S4: the electrical pressing sub-piece 130 is loaded into the loading slot 150 along a direction parallel to the loading slot 150, and the foil tab 210 abutting against the side edge of the electrical adapting mother piece 110 is bent and attached into the loading slot 150.
For the structure of the single cell main body 200, at least one of the foil tabs 210 at the two ends of the cell main body 200 is engaged with the bearing slot 150 in the manner of step S3 and step S4, which may be referred to in detail in the first embodiment.
Meanwhile, the assembly process for other components of the battery, such as the case or the top cap, is identical to that of the conventional secondary battery and will not be described in detail herein.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. A battery switching component is characterized by comprising an electrical switching master slice and at least one electrical pressing sub-slice, wherein at least one bearing groove is formed in one side surface of the electrical switching master slice, the bearing groove is used for being jointed with a foil tab arranged at the end of a cell main body, the electrical pressing sub-slice is arranged on the bearing groove and connected with the electrical switching master slice, and the electrical pressing sub-slice is used for being attached to the foil tab, so that the foil tab is pressed between the electrical pressing sub-slice and the electrical switching master slice.
2. The battery adapter member according to claim 1, wherein the electrical pressing sub-piece has a shape matching the receiving groove, and is welded to the receiving groove.
3. The battery adapter member according to claim 2, wherein the edge weld of the electrical pressing sub-piece is disposed at the edge of the receiving slot, and the middle portion of the electrical pressing sub-piece is provided with a plurality of welding spots stitch-welded to the electrical adapter mother piece, so that the electrical pressing sub-piece, the foil tab and the electrical adapter mother piece are welded together.
4. The battery switching component according to claim 1, wherein the electrical switching mother plate comprises a cross piece, a vertical piece and a connecting piece, the cross piece is connected with one end of the connecting piece, one end of the vertical piece along the length direction is connected with the other end of the connecting piece, the receiving slot is arranged on two side edges of the vertical piece along the width direction, and the connecting piece is bent so that the cross piece and the vertical piece form an included angle.
5. The battery transition member of claim 4, wherein the connecting tabs have a width that is less than both the width of the vertical tabs and the width of the cross tabs.
6. The battery adapter member according to claim 4, further comprising an insulating bottom membrane, wherein the vertical piece and a portion of the connecting piece are attached to one side surface of the insulating bottom membrane, and the insulating bottom membrane is used for electrically isolating the electrical adapter female piece from the cell main body.
7. The battery adapter member according to claim 6, wherein a first limiting post is disposed on the insulating base film, a first limiting hole is disposed on the connecting piece, and the first limiting post is disposed in the first limiting hole in a matching manner.
8. The battery adapter member according to claim 6, wherein a second limiting post is disposed on the insulating base film, a second limiting hole is disposed on the vertical film, and the second limiting post is disposed in the second limiting hole.
9. The battery adapter member according to claim 6, wherein at least one side edge of the insulating bottom membrane is provided with a buffer post, at least one side edge of the vertical piece is provided with an abdicating notch, and the buffer post is embedded in the abdicating notch and used for abutting against the surface of the foil tab.
10. A battery, comprising a cell main body and the battery adapter member of any one of claims 1 to 9, wherein a foil tab is disposed at an end of the cell main body, the cell main body is disposed at one side of the electrical adapter mother sheet, the receiving slot is disposed at a side surface of the electrical adapter mother sheet facing away from the cell main body, and the foil tab is bent and engaged with the receiving slot and is pressed between the electrical pressing sub-sheet and the electrical adapter mother sheet.
11. A method of assembling a battery for assembling the battery of claim 10, the method comprising:
one side surface of the foil electrode lug is abutted against the side edge of the electrical transfer mother plate;
and the electric pressing sub-sheets are loaded into the bearing groove position along a direction parallel to the bearing groove position, and the foil electrode lugs are bent and attached into the bearing groove position.
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| CN202111438359.3A CN114142180B (en) | 2021-11-30 | 2021-11-30 | Battery switching member, battery and battery assembling method |
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| CN114142180B (en) | 2024-01-26 |
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