CN216288853U - Utmost point ear is drawn forth subassembly, utmost point core subassembly and battery - Google Patents
Utmost point ear is drawn forth subassembly, utmost point core subassembly and battery Download PDFInfo
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- CN216288853U CN216288853U CN202122635757.6U CN202122635757U CN216288853U CN 216288853 U CN216288853 U CN 216288853U CN 202122635757 U CN202122635757 U CN 202122635757U CN 216288853 U CN216288853 U CN 216288853U
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- tab
- bending
- pole core
- plate
- supporting
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- 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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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- 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
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- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
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- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
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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
Abstract
The utility model discloses a tab leading-out assembly, a pole core assembly and a battery. This utmost point ear extraction subassembly includes: the supporting piece comprises two oppositely arranged lug connecting parts and two oppositely arranged bending parts, the two lug connecting parts are connected through a supporting connecting plate, the bending parts are positioned at the end parts of the two ends of the lug connecting parts, the bending parts are connected with the lug connecting parts and/or the supporting connecting plate, a clamping space is formed among the supporting connecting plate, the two lug connecting parts and the two bending parts, and a first connecting structure is arranged on the bending parts; the insulating spacer comprises an insulating connecting part, the insulating connecting part is inserted into the clamping space, and two ends of the insulating connecting part are provided with second connecting structures suitable for being connected and matched with the first connecting structures; and the lead-out piece is fixedly connected with the supporting connecting plate. According to the tab leading-out assembly, the bending part is connected and matched with the insulation spacing part, so that the insulation spacing part can reliably support the supporting part, and the strength of the supporting part is good.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a tab leading-out assembly, a pole core assembly with the tab leading-out assembly and a battery with the pole core assembly.
Background
In the related art, a tab leading-out assembly of a battery includes an insulating spacer, a support member and a leading-out member, the support member is fixedly connected with the insulating spacer, the leading-out member is fixedly connected with the support member, the tab leading-out assembly extends into a space between adjacent two electrode tabs on the same side toward a pole core direction by the insulating spacer and contacts with the pole core, the support member is electrically connected with two adjacent tab pieces respectively, and the leading-out member extends from the support member toward a direction away from the pole core. But the strength of the supporting piece is poor, and when the supporting piece and the tab piece form electric connection, the deformation is easy to occur, so that cold welding is caused, and the actual use performance is influenced; in addition, the packaging area on the leading-out piece has large fluctuation in the actual packaging process, the short circuit problem is frequent, and the reject ratio is as high as 60%.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the utility model provides the tab leading-out assembly, and the supporting piece has better strength.
The utility model also provides a pole core assembly with the pole lug lead-out assembly.
The utility model also provides a battery with the pole core assembly.
The tab lead-out assembly according to an embodiment of the present invention includes: the supporting piece is conductive and comprises a supporting connecting plate, two oppositely arranged lug connecting parts and two oppositely arranged bending parts, the two lug connecting parts are connected through the supporting connecting plate, the lug connecting parts and the bending parts are positioned on the same side of the supporting connecting plate, the bending parts are positioned at the end parts of the two ends of the lug connecting parts, the bending parts are connected with the lug connecting parts and/or the supporting connecting plate, a clamping space is formed among the supporting connecting plate, the two lug connecting parts and the two bending parts, and a first connecting structure is arranged on the bending parts; the insulating spacer is provided with insulation and comprises an insulating connecting part, the insulating connecting part is at least partially inserted into the clamping space, and second connecting structures are arranged at two ends of the insulating connecting part and are suitable for being connected and matched with the first connecting structures; the leading-out piece has conductivity and is suitable for being fixedly connected with the supporting and connecting plate.
According to the tab leading-out assembly provided by the embodiment of the utility model, the bending part is designed on the support part, and the first connecting structure of the bending part is connected and matched with the second connecting structure of the insulating spacer, so that the support of the insulating spacer on the support part is more reliable, and the support part has better strength and is not easy to deform.
According to some embodiments of the present invention, the bent portion is bent and extended from one end of the tab connection part.
According to some embodiments of the utility model, the bending portion extends from one end of the supporting connecting plate.
According to some embodiments of the utility model, each of the bends comprises: the bending connection plate is formed by bending and extending one end of the supporting connection plate, the bending first plate is suitable for being fixedly connected with one of the corresponding ends of the lug connection part, and/or the bending second plate is suitable for being fixedly connected with the other corresponding end of the lug connection part.
According to some embodiments of the utility model, one of the first and second connection structures is configured as a snap and the other is configured as a snap hole, the snap being adapted to snap fit with the snap hole.
Furthermore, the first connecting structure is a buckle, the second connecting structure is a clamping hole, the insulating connecting portion is provided with an avoiding through hole, one end of the buckle is connected to the edge of the avoiding through hole, and the other end of the buckle is a free end.
Optionally, a communication groove for communicating the clamping hole with the edge of the bending portion is further formed in the bending portion.
According to some embodiments of the utility model, the tab comprises: the packaging structure comprises a leading-out connecting part, a leading-out part and a packaging part used for being in sealing connection with a packaging film, wherein the leading-out connecting part is suitable for being fixedly connected with a supporting connecting plate, the leading-out part is fixedly connected with the leading-out connecting part, the leading-out part extends towards the direction deviating from a supporting piece, the packaging part is arranged on the leading-out part, a leading-out piece positioning hole is further formed in the leading-out part, and the leading-out piece positioning hole is located on one side, far away from the supporting piece, of the packaging part.
A pole piece assembly according to an embodiment of the second aspect of the utility model, comprising: the pole core body comprises at least two pole cores which are arranged in a stacked mode, each pole core is provided with two lugs with opposite polarities, the two lugs are distributed at the two opposite ends of the corresponding pole core, the lugs at the same end of the pole core body are same in polarity, the lug leading-out assembly is arranged between the two adjacent lugs with the same polarity, and the two adjacent lugs with the same polarity are respectively fixedly connected with the corresponding lug connecting parts; a space for accommodating the pole core body and the pole lug leading-out assembly is formed in the packaging film; the pole core space ring is located in the packaging film, the two ends of the pole core body are provided with the pole core space ring, pole lug positioning holes are formed in the pole core space ring, and one part of the lead-out piece extends out of the pole lug positioning holes and extends out of the packaging film.
According to the pole core assembly provided by the embodiment of the utility model, the pole lug leading-out assemblies are arranged at the pole lugs at the two ends, and the supporting piece of the pole lug leading-out assembly is high in strength and not easy to deform, so that the pole core assembly is good in reliability.
According to the third aspect of the embodiment of the utility model, the battery comprises the pole core assembly.
The advantages of the battery and the pole core assembly are the same as those of the pole core assembly in the prior art, and are not described in detail herein.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
Fig. 1 is an assembly schematic view of a tab extraction assembly according to a first embodiment of the utility model;
fig. 2 is an exploded schematic view of a tab extraction assembly according to a first embodiment of the utility model;
fig. 3 is an assembled view of a tab extraction assembly in accordance with a second embodiment of the utility model;
fig. 4 is an exploded schematic view of a tab extraction assembly in accordance with a second embodiment of the utility model;
fig. 5 is an assembly schematic view of a tab extraction assembly according to a third embodiment of the utility model;
fig. 6 is an exploded schematic view of a tab extraction assembly according to a third embodiment of the utility model;
FIG. 7 is an assembly schematic of a pole piece assembly according to an embodiment of the utility model;
FIG. 8 is an exploded schematic view of a pole piece assembly according to an embodiment of the utility model;
fig. 9 is a schematic diagram of a battery according to an embodiment of the present invention.
Reference numerals:
the battery 1000, the pole core assembly 100, the tab leading-out assembly 10, the leading-out piece 1, the leading-out connection part 11, the leading-out part 12, the packaging part 13, the leading-out piece positioning hole 14, the support part 2, the tab connection part 21, the bending part 22, the bending first plate 221, the bending second plate 222, the bending connection plate 223, the support connection plate 23, the first connection structure 24, the communication groove 25, the insulation separation part 3, the insulation connection part 31, the matching surface 311, the connection surface 312, the second connection structure 32, the avoiding through hole 33, the insulation support part 34, the support surface 35, the pole core body 20, the tab 201, the packaging film 30, the packaging upper film 301, the packaging lower film 302, the pole core spacer 40, the first spacer 401, the second spacer 402 and the tab positioning hole 403.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A tab extraction assembly 10, a pole core assembly 100 and a battery 1000 according to an embodiment of the present invention will be described in detail below with reference to fig. 1 to 9.
Referring to fig. 1 to 8, a tab extraction assembly 10 according to an embodiment of the present invention may include: lead sheet 1, support 2 and insulating spacer 3, lead sheet 1 and support 2 fixed connection, and support 2 and insulating spacer 3 fixed connection. For convenience of description, it is now defined that the thickness direction of the tab drawing assembly 10 is a first direction X, the width direction of the tab drawing assembly 10 is a second direction Y, and the height direction of the tab drawing assembly 10 is a third direction Z.
Optionally, the first direction X, the second direction Y, and the third direction Z are mutually perpendicular.
As shown in fig. 1 to 6, the supporting member 2 has conductivity, and the supporting member 2 includes a supporting connection plate 23, two tab connection portions 21 disposed opposite to each other, and two bending portions 22 disposed opposite to each other, the two tab connection portions 21 are connected by the supporting connection plate 23, the tab connection portions 21 and the bending portions 22 are located on the same side of the supporting connection plate 23, and the bending portions 22 are located at both end portions of the tab connection portions 21.
The bending portion 22 is connected to the tab connecting portion 21 and/or the support connecting plate 23, that is, the bending portion 22 may be connected to only the tab connecting portion 21, the bending portion 22 may also be connected to only the support connecting plate 23, and the bending portion 22 may also be connected to both the tab connecting portion 21 and the support connecting plate 23.
Two utmost point ear connecting portion 21 and two portions of bending 22 arrange in order with utmost point ear connecting portion 21, the portion of bending 22, in other words, two utmost point ear connecting portion 21 and two portions of bending 22 form "mouthful" font structure, are favorable to promoting support piece 2's self intensity from this. A space is formed between the support connection plate 23, the two tab connection portions 21, and the two bent portions 22.
Specifically, the tab connecting portion 21 is located in the YZ plane and extends in the second direction Y and the third direction Z, the bent portion 22 is located in the XZ plane and extends in the first direction X and the third direction Z, and the support connecting plate 23 is located in the XY plane and extends in the first direction X and the second direction Y. The tab connecting part 21, the bent part 22 and the support connecting plate 23 are perpendicular to each other in pairs.
In some embodiments, the tab connection part 21 may be bent and extended from one end of the support connection plate 23 toward the third direction Z. In other embodiments, the tab connecting portion 21 and the support connecting plate 23 may be fixedly connected by welding or the like.
The insulating spacer 3 has an insulating property, and the insulating spacer 3 includes an insulating connection portion 31, the insulating connection portion 31 is at least partially inserted into the clamping space of the support member 2, the first connection structure 24 is disposed on the bending portion 22 of the support member 2, the second connection structures 32 are disposed at two ends of the insulating connection portion 31, and the second connection structures 32 are suitable for being connected and matched with the first connection structure 24.
Specifically, the insulating connection 31 has two oppositely disposed mating surfaces 311 and two oppositely disposed connection surfaces 312, the connection surfaces 312 being located at ends of the mating surfaces 311, and the second connection structure 32 being disposed on the connection surfaces 312. After the insulation spacer 3 and the support member 2 are assembled, the fitting surface 311 is located on the inner side of the tab connection portion 21, the fitting surface 311 is suitable for being directly opposite to the tab connection portion 21, the connection surface 312 is located on the inner side of the bent portion 22, and the connection surface 312 is suitable for being directly opposite to the bent portion 22, so that the second connection structure 32 on the connection surface 312 and the first connection structure 24 on the bent portion 22 can be smoothly connected and matched, and the connection surface 312 is suitable for being closely adjacent to the bent portion 22, so that the connection stability of the second connection structure 32 and the first connection structure 24 is good.
In some embodiments, the mating surface 311 and the tab connection portion 21 may be brought into close contact to improve the supporting performance of the insulation spacer 3 to the support 2. In other embodiments, the fitting surface 311 and the tab connecting portion 21 may be spaced apart from each other to improve the efficiency of assembling and disassembling the insulation spacer 3 and the support member 2.
The two fitting surfaces 311 are connected with the two connecting surfaces 312 so that the insulating spacer 3 has closed side surfaces, thereby not only facilitating the manufacturing of the insulating spacer 3, resulting in high yield and low cost of the insulating spacer 3, but also increasing the contact area of the insulating spacer 3 and the support 2 and improving the assembly efficiency of the insulating spacer 3 and the support 2. In addition, when the support member 2 is electrically connected with the tab, the insulation spacer 3 makes the support member 2 not easy to deform, which is beneficial to improving the electrical connection yield of the support member 2 and the tab.
Referring to fig. 2, 4 and 6, the insulating spacer 3 may further include an insulating support portion 34, the insulating support portion 34 is fixedly connected to the insulating connection portion 31, and an area of the insulating support portion 34 is larger than an area of the insulating connection portion 31 at a connection surface of the insulating support portion 34 and the insulating connection portion 31, in other words, the insulating support portion 34 and the insulating connection portion 31 form a step structure, a connection portion of the insulating support portion 34 and the insulating connection portion 31 forms a support surface 35, and after the second connection structure 32 is connected to and mated with the first connection structure 24, the support surface 35 may contact with the support 2, so as to support the support 2.
The tab 1 has conductivity and the tab 1 is adapted to be fixedly connected to the support connection plate 23. The tab 1 is used to extract the polarity of the tab when the tab extraction assembly 10 is attached to the tab of the core assembly 100.
According to the tab leading-out assembly 10 of the embodiment of the utility model, the bending part 22 is designed on the support member 2, and the first connecting structure 24 of the bending part 22 is connected and matched with the second connecting structure 32 of the insulating spacer 3, so that the support of the insulating spacer 3 on the support member 2 is more reliable, the strength of the support member 2 is better, and the support member 2 is not easy to deform.
In the embodiment shown in fig. 1 to 2, the bent portion 22 is bent and extended from one end of the tab connecting portion 21. In other alternative embodiments, the bent portion 22 and the tab connecting portion 21 may also be fixedly connected by welding or the like.
In the embodiment shown in fig. 3-4, the bending portion 22 is formed by bending and extending from one end of the supporting connection plate 23, so that the bending portion 22 and the tab connection portion 21 are formed by bending and extending from the end of the supporting connection plate 23, and the directions of the bending portion 22 and the tab connection portion 21 are the same, thereby being more beneficial to the product molding of the support member 2, and the bending molding can improve the production efficiency and save the production cost. In other alternative embodiments, the bending portion 22 and the supporting connecting plate 23 may also be fixedly connected by welding or the like.
In the embodiment shown in fig. 5-6, each bend 22 may comprise: a first bending plate 221, a second bending plate 222, and a bending connecting plate 223 connecting the first bending plate 221 and the second bending plate 222, wherein the bending connecting plate 223 is formed by bending and extending from one end of the support connecting plate 23, the first bending plate 221 is located on one side of the bending connecting plate 223 facing one tab connecting portion 21, the second bending plate 222 is located on one side of the bending connecting plate 223 facing the other tab connecting portion 21, in some embodiments, the first bending plate 221 may be fixedly connected, for example, welded, to the one tab connecting portion 21 at the corresponding end, and the second bending plate 222 may be fixedly connected, for example, welded, to the other tab connecting portion 21 at the corresponding end, so that the bending portion 22 is connected to both the support connecting plate 23 and both tab connecting portions 21 at the same end of the support member 2, thereby improving the overall strength of the support member 2, and when the requirement for the fitting accuracy between the support member 2 and the insulation spacer 3 is low, the assembly is more simple. Of course, in other alternative embodiments, the bent first plate 221 is fixedly coupled to the one tab connecting portion 21 at the corresponding end, and the bent second plate 222 is separated from the other tab connecting portion 21 at the corresponding end; or in some other alternative embodiments, the bent first plate 221 is separated from the one tab connecting portion 21 at the corresponding end, and the bent second plate 222 is fixedly coupled to the other tab connecting portion 21 at the corresponding end.
Alternatively, the bending portion 22 and the supporting connecting plate 23 may be fixedly connected by welding or the like.
The bent first plate 221 is adapted to be fixedly connected to a side of the one tab connecting portion 21 facing the interposed space, and the bent second plate 222 is adapted to be fixedly connected to a side of the other tab connecting portion 21 facing the interposed space. In short, the bent first plate 221 is adapted to be fixedly coupled with the inside of the tab connecting part 21, and the bent second plate 222 is adapted to be fixedly coupled with the inside of the tab connecting part 21.
In some embodiments, the first connection structure 24 and the second connection structure 32 may be both snap-fit structures, such that the first connection structure 24 and the second connection structure 32 are snap-fit, so that the assembly and disassembly between the support member 2 and the insulating spacer 3 are more convenient and faster.
One of the first connecting structure 24 and the second connecting structure 32 is configured as a buckle, and the other one is configured as a clamping hole, and the buckle is suitable for being clamped and matched with the clamping hole, so that the assembly and the disassembly between the bending part 22 of the support piece 2 and the insulating connecting part 31 of the insulating spacer 3 are more convenient and faster.
In the embodiment shown in fig. 1-6, the first connection structure 24 is configured as a snap hole and the second connection structure 32 is configured as a snap. Furthermore, an avoiding through hole 33 is formed in the insulating connecting portion 31, one end of the buckle is connected to the hole edge of the avoiding through hole 33, the other end of the buckle is a free end, the free end can be freely arranged in the avoiding through hole 33 or positioned outside the avoiding through hole 33, the hole width of the avoiding through hole 33 is larger than the width of the buckle, the hole length of the avoiding through hole 33 is larger than the length of the buckle, and therefore the buckle does not interfere with the hole wall of the avoiding through hole 33. Like this, when buckle and card hole joint cooperation, the buckle can be in dodging the through-hole 33 activity, and the buckle forms to springback the buckle, can increase the resilience effect during the atress, is favorable to promoting the stability of buckle and card jogged joint to be favorable to reducing the assembly degree of difficulty in buckle and the card hole.
After the buckle and the cooperation of calorie hole joint, the buckle is greater than 0.5mm with the size of calorie hole overlap region on second direction Y, for example can be 1mm, can guarantee from this that the buckle is higher with the joint intensity in card hole, is difficult for breaking off.
Optionally, as shown in fig. 1-2, a communication groove 25 is further disposed on the bent portion 22 to communicate the card hole and the edge of the bent portion 22. From this, when joining in marriage buckle and card hole joint, because the existence of intercommunication groove 25, the card hole can be strutted for the buckle gets into more easily in the card hole or withdraws from the card hole easily, is favorable to further reducing the assembly degree of difficulty in buckle and card hole.
In the embodiment shown in fig. 1 to 2, one end of each tab connecting portion 21 is bent and extended to form a bent half portion, the two bent half portions are butted to form a complete bent portion 22, and a space is formed between the two bent half portions to form a communication groove 25.
In the embodiments shown in fig. 2, 4, 6, the tab 1 may comprise: the lead-out connecting part 11, the lead-out part 12 and the packaging part 13, the lead-out connecting part 11 is suitable for being fixedly connected with the support connecting plate 23, for example, the lead-out connecting part 11 and the support connecting plate 23 can be connected together in a laser welding mode, and the connection mode has good stability and strong overcurrent capacity after being connected with other components. The lead-out portion 12 is fixedly connected to the lead-out connection portion 11, and the lead-out portion 12 extends in a direction away from the support 2, in some embodiments, the lead-out connection portion 11 may be formed by bending and extending one end of the lead-out portion 12. In other alternative embodiments, the lead-out connection portion 11 and the lead-out portion 12 may also be fixedly connected by welding or the like. The packaging part 13 is arranged on the leading-out part 12, the packaging part 13 is used for being connected with the packaging film 30 in a sealing mode, a leading-out piece positioning hole 14 is further arranged on the leading-out part 12, and the leading-out piece positioning hole 14 is located on one side, far away from the supporting piece 2, of the packaging part 13. The number of the tab positioning holes 14 may be one or more, and may be two, for example.
The lead-out sheet positioning holes 14 on the lead-out part 12 can improve the packaging yield and reduce the requirements on the precision of parts, the production process and the like. Particularly, the frock clamp fixes a position the encapsulation position through drawing forth piece locating hole 14, can reduce the influence that relevant spare part size and offset brought effectively, is favorable to realizing automatic quick production, improves beat and efficiency, can guarantee simultaneously that the actual sealed effect and the insulating properties of the product after the encapsulation are better. The tab positioning hole 14 on the leading portion 12 is not described as a hard control, and the shape, size, position, etc. of the tab positioning hole 14 can be adjusted according to actual requirements. For example, the lead-out sheet positioning hole 14 may be configured as a "U" -shaped hole, a circular hole, or the like.
Referring to fig. 7-8, a pole piece assembly 100 according to an embodiment of the second aspect of the present invention may include: pole body 20, encapsulation film 30, and pole spacer 40. The thickness direction of the pole core assembly 100 is the same as the first direction X, the width direction of the pole core assembly 100 is the same as the second direction Y, and the length direction of the pole core assembly 100 is the same as the third direction Z. That is, the thickness direction of the tab drawing assembly 10 coincides with the thickness direction of the core assembly 100, the width direction of the tab drawing assembly 10 coincides with the width direction of the core assembly 100, and the height direction of the tab drawing assembly 10 coincides with the length direction of the core assembly 100.
As shown in fig. 8, the pole core body 20 includes at least two pole cores stacked in layers, each pole core has two tabs 201 with opposite polarities, the two tabs 201 are distributed at two opposite ends of the corresponding pole core, the tabs 201 at the same end of the pole core body 20 have the same polarity, the tab leading-out assembly 10 of the above embodiment is arranged between two adjacent tabs 201 with the same polarity, and the two adjacent tabs 201 with the same polarity are respectively connected and fixed with the corresponding tab connection portions 21.
That is, the polarity of the tab lead-out assemblies 10 at both ends of the pole core body 20 is opposite, for example, the polarity of the tab lead-out assembly 10 at one end of the pole core body 20 is positive, and the polarity of the tab lead-out assembly 10 at the other end of the pole core body 20 is negative.
Specifically, the two tab leading-out assemblies 10 with opposite polarities have different positive and negative polarities on the leading-out sheet 1 and the support member 2, and the positive and negative leading-out sheets 1 and the support member 2 are made of different raw materials, but the leading-out sheets 1 and the support members 2 of the two tab leading-out assemblies 10 with opposite polarities are completely identical in structure and can be obtained through the same process and tooling equipment, so that the replaceability of parts of production and manufacturing equipment is improved, the production efficiency is improved, and the production difficulty is reduced. Two tab extraction assemblies 10 of opposite polarity may use the same insulation spacer 3.
The tab leading-out assembly 10 at the corresponding end is assembled into the gap between the two tabs 201, and the tabs 201 are fixedly connected with the corresponding tab connecting portions 21, in other words, the two tabs 201 are fixedly connected with the two tab connecting portions 21 one by one. Alternatively, the tabs 201 and the corresponding tab connection portions 21 are electrically connected by laser welding, ultrasonic welding, or the like. In this electricity connection process, frock clamp has the extrusion condition to two utmost point ear connecting portion 21 of support piece 2, and the supporting role that two portions 22 of bending of support piece 2 also played this moment effectively reduces support piece 2's deflection, promotes the electricity connection process yield, reduces risks such as rosin joint, short circuit.
The two-end tab 201 of the pole core body 20 includes a first tab disposed at one end of the pole core body 20 and a second tab disposed at the other end of the pole core body 20, the polarity of the first tab is different from that of the second tab, the tab leading-out component 10 connected with the first tab has the same polarity as the first tab, and the tab leading-out component 10 connected with the second tab has the same polarity as the second tab.
A space for accommodating the core body 20 and the tab lead-out assembly 10 is formed in the encapsulation film 30. Specifically, the packaging film 30 includes a packaging upper film 301 and a packaging lower film 302, the middle portions of the packaging upper film 301 and the packaging lower film 302 are respectively provided with a protrusion protruding away from each other, a closed hollow cavity is formed inside the packaging upper film 301 and the packaging lower film 302, the pole core body 20 is placed in the cavity, the tab leading-out assembly 10 is connected with the tab piece 201 at the end of the pole core body 20, so that the inner end of the tab leading-out assembly 10 is placed in the cavity, and the outer end of the tab leading-out assembly 10 extends out of the cavity. During packaging, the upper packaging film 301 and the lower packaging film 302 are respectively positioned at two sides of the packaging part 13 of the lead-out sheet 1, and the tool clamp identifies the packaging position through the lead-out sheet positioning hole 14 on the lead-out sheet 1.
The two ends of the pole core body 20 are provided with pole core spacer rings 40, the pole core spacer rings 40 are located in the packaging film 30, the pole core spacer rings 40 are provided with pole lug positioning holes 403, and a part of the lead-out sheet 1 extends out of the pole lug positioning holes 403 and extends out of the packaging film 30. The pole core spacer ring 40 may include a first spacer ring 401 and a second spacer ring 402, the first spacer ring 401 is provided with a first positioning half hole, the second spacer ring 402 is provided with a second positioning half hole, and when the first spacer ring 401 and the second spacer ring 402 are fastened, the first positioning half hole and the second positioning half hole are communicated with each other to form a complete tab positioning hole 403. The first space ring 401 and the second space ring 402 are respectively assembled on two sides of the second direction Y where the tab is located, and mainly function to support the pole core leading-out assembly and the packaging film 30.
According to the pole core assembly 100 provided by the embodiment of the utility model, the pole lug leading-out assemblies 10 are arranged at the pole lugs at the two ends, and the supporting pieces 2 of the pole lug leading-out assemblies 10 are high in strength and not easy to deform, so that the reliability of the pole core assembly 100 is good.
Referring to fig. 9, in a battery 1000 according to an embodiment of the third aspect of the present invention, including the pole core assembly 100 of the above embodiment, the reliability of the battery 1000 is better.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A tab lead-out assembly, comprising:
the supporting piece (2) is conductive and comprises a supporting connecting plate (23), two oppositely arranged lug connecting parts (21) and two oppositely arranged bending parts (22), the two lug connecting parts (21) are connected through the supporting connecting plate (23), the tab connecting part (21) and the bending part (22) are positioned on the same side of the supporting connecting plate (23), the bending parts (22) are positioned at the end parts of the two ends of the tab connecting part (21), and the bending part (22) is connected with the tab connecting part (21) and/or the support connecting plate (23), a clamping space is formed among the support connecting plate (23), the two tab connecting parts (21) and the two bending parts (22), and a first connecting structure (24) is arranged on each bending part (22);
the insulating separation part (3) has insulating property and comprises an insulating connecting part (31), the insulating connecting part (31) is at least partially inserted into the clamping space, second connecting structures (32) are arranged at two ends of the insulating connecting part (31), and the second connecting structures (32) are suitable for being connected and matched with the first connecting structures (24);
the lead-out sheet (1), the lead-out sheet (1) has conductivity and is suitable for being fixedly connected with the supporting and connecting plate (23).
2. The tab extraction assembly as claimed in claim 1, wherein the bent portion (22) is bent and extended from one end of the tab connection portion (21).
3. The tab extraction assembly as claimed in claim 1, wherein the bent portion (22) is bent and extended from one end of the support connection plate (23).
4. The tab extraction assembly as claimed in claim 1 wherein each of said bends (22) comprises: the tab connecting plate comprises a first bending plate (221), a second bending plate (222) and a bending connecting plate (223) for connecting the first bending plate (221) and the second bending plate (222), wherein the bending connecting plate (223) is formed by bending and extending from one end of the supporting connecting plate (23), the first bending plate (221) is suitable for being fixedly connected with one tab connecting portion (21) at the corresponding end, and/or the second bending plate (222) is suitable for being fixedly connected with the other tab connecting portion (21) at the corresponding end.
5. The tab extraction assembly as claimed in claim 1 wherein one of the first connection structure (24) and the second connection structure (32) is configured as a snap and the other is configured as a snap hole, the snap adapted to snap fit with the snap hole.
6. The tab leading-out assembly according to claim 5, wherein the first connecting structure (24) is configured as a clamping hole, the second connecting structure (32) is configured as a buckle, an avoiding through hole (33) is formed in the insulating connecting portion (31), one end of the buckle is connected to the hole edge of the avoiding through hole (33), and the other end of the buckle is a free end.
7. The tab extraction assembly according to claim 5, characterized in that the bent part (22) is further provided with a communication groove (25) for communicating the clamping hole with the edge of the bent part (22).
8. The tab extraction assembly as claimed in claim 1, wherein the extraction tab (1) comprises: draw connecting portion (11), draw forth portion (12) and be used for with encapsulation membrane (30) sealing connection's encapsulation portion (13), draw forth connecting portion (11) be suitable for with supporting connection board (23) fixed phase is connected, draw forth portion (12) with draw forth connecting portion (11) stationary phase and be connected, just draw forth portion (12) orientation and deviate from the direction of support piece (2) extends, encapsulation portion (13) set up draw forth on portion (12), still be provided with on draw forth portion (12) and draw forth piece locating hole (14), it is located to draw forth piece locating hole (14) keep away from of encapsulation portion (13) one side of support piece (2).
9. A pole core assembly, comprising:
the pole core body (20), the pole core body (20) includes at least two pole cores arranged in a stacked manner, each pole core has two tabs (201) with opposite polarities, the two tabs (201) are distributed at two opposite ends of the corresponding pole core, the tabs (201) at the same end of the pole core body (20) have the same polarity, the tab leading-out assembly according to any one of claims 1-8 is arranged between two adjacent tabs (201) with the same polarity, and the two adjacent tabs (201) with the same polarity are respectively connected and fixed with the corresponding tab connecting portions (21);
an encapsulation film (30), wherein a space for accommodating the pole core body (20) and the tab leading-out assembly is formed in the encapsulation film (30);
the pole core spacer ring (40), the pole core spacer ring (40) is located in packaging film (30), the both ends of pole core body (20) all are provided with pole core spacer ring (40), be provided with utmost point ear locating hole (403) on pole core spacer ring (40), draw forth partly follow of piece (1) utmost point ear locating hole (403) stretch out and follow packaging film (30) stretch out.
10. A battery comprising the pole piece assembly of claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122635757.6U CN216288853U (en) | 2021-10-29 | 2021-10-29 | Utmost point ear is drawn forth subassembly, utmost point core subassembly and battery |
| PCT/CN2022/127386 WO2023072073A1 (en) | 2021-10-29 | 2022-10-25 | Tab lead-out assembly, pole core assembly, battery, battery pack, and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122635757.6U CN216288853U (en) | 2021-10-29 | 2021-10-29 | Utmost point ear is drawn forth subassembly, utmost point core subassembly and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216288853U true CN216288853U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122635757.6U Active CN216288853U (en) | 2021-10-29 | 2021-10-29 | Utmost point ear is drawn forth subassembly, utmost point core subassembly and battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN216288853U (en) |
| WO (1) | WO2023072073A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023072073A1 (en) * | 2021-10-29 | 2023-05-04 | 比亚迪股份有限公司 | Tab lead-out assembly, pole core assembly, battery, battery pack, and vehicle |
| WO2024055166A1 (en) * | 2022-09-13 | 2024-03-21 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electric apparatus, and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011198660A (en) * | 2010-03-20 | 2011-10-06 | Sanyo Electric Co Ltd | Battery pack |
| CN104009198B (en) * | 2014-03-25 | 2016-01-20 | 江苏华东锂电技术研究院有限公司 | Lug jockey and there is the battery pack of lug jockey |
| KR102210461B1 (en) * | 2014-07-23 | 2021-02-01 | 에스케이이노베이션 주식회사 | Battery module comprising a unit battery module and battery pack comprisng the same and Method of manufacturing the battery module |
| CN206148522U (en) * | 2016-09-14 | 2017-05-03 | 乐视汽车（北京）有限公司 | Group battery utmost point ear cooling structure , group battery and have vehicle of this group battery |
| CN206673012U (en) * | 2017-03-07 | 2017-11-24 | 北京长城华冠汽车科技股份有限公司 | Battery modules |
| CN108448041A (en) * | 2018-05-02 | 2018-08-24 | 中航锂电技术研究院有限公司 | A kind of soft bag lithium ionic cell module and connection method |
| CN209747582U (en) * | 2018-12-29 | 2019-12-06 | 深圳市德兰明海科技有限公司 | single-string battery module and multi-string battery module |
| CN112838324B (en) * | 2019-11-22 | 2022-01-07 | 比亚迪股份有限公司 | Battery, battery module, battery pack and automobile |
| CN212380528U (en) * | 2020-05-18 | 2021-01-19 | 比亚迪股份有限公司 | Battery, battery pack and automobile |
| CN216288853U (en) * | 2021-10-29 | 2022-04-12 | 比亚迪股份有限公司 | Utmost point ear is drawn forth subassembly, utmost point core subassembly and battery |
-
2021
- 2021-10-29 CN CN202122635757.6U patent/CN216288853U/en active Active
-
2022
- 2022-10-25 WO PCT/CN2022/127386 patent/WO2023072073A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023072073A1 (en) * | 2021-10-29 | 2023-05-04 | 比亚迪股份有限公司 | Tab lead-out assembly, pole core assembly, battery, battery pack, and vehicle |
| WO2024055166A1 (en) * | 2022-09-13 | 2024-03-21 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electric apparatus, and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023072073A1 (en) | 2023-05-04 |
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