Thin film electric device with staggered tabs and power supply system
By using a staggered tab design and a binding structure, the problem of small contact area of thin-film battery tabs was solved, resulting in reduced resistance and improved mechanical performance, while simplifying the assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZINERGY SHENZHEN LTD
- Filing Date
- 2025-03-25
- Publication Date
- 2026-04-10
AI Technical Summary
When the tabs of a thin-film battery are connected by rivets, the small contact area results in a large resistance, which affects the resistance performance.
The design employs a staggered electrode design, and multiple conductive units are connected in series or parallel through a binding structure. Electrical connection is achieved using binding and connectors, increasing the contact area between the electrode and the connector.
It reduces the resistance of the tab misalignment thin-film electrical device, improves mechanical performance and connection stability, simplifies the assembly process, and avoids the defects of traditional connection technology.
Smart Images
Figure CN224110437U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to thin film battery technical field, especially in thin film electric device and power supply system of pole ear dislocation. BACKGROUND
[0002] Thin film battery has natural limitation in capacity and voltage of single battery due to its unique properties of light weight and ultra thin. In order to meet the demand in practical application, we usually adopt combination structure of series and parallel to enhance the performance of the whole system.
[0003] In the related art, the pole ear of thin film battery is connected through rivet. However, when the pole ear of thin film battery is stacked, for the pole ear of single surface conduction, the conduction between multiple pole ears can only rely on rivet, and the contact area between rivet foot and pole ear is small, resulting in large resistance. SUMMARY
[0004] The main purpose of the utility model is to provide a kind of thin film electric device and power supply system of pole ear dislocation, to reduce the resistance of thin film electric device of pole ear dislocation.
[0005] To achieve the above purpose, the thin film electric device of pole ear dislocation provided by the utility model comprises:
[0006] Multiple conductive units, the conductive unit includes substrate and pole ear, the pole ear is arranged on one side of the substrate, the multiple conductive units are arranged in layers, at least part of the projection of at least one pole ear is distributed in dislocation with the projection of another pole ear;
[0007] Binding structure, including at least one binding piece and connecting piece connecting the binding piece, the binding piece is arranged through the substrate and the pole ear, so that the multiple conductive units are connected in series or parallel;The end of the binding piece away from the connecting piece is provided with a folded fixing part, the fixing part extends inwardly towards the middle line of the binding structure, and abuts against the outer surface of the conductive unit;
[0008] Among them, the pole ear of at least one conductive unit is arranged on the side of the corresponding substrate towards the connecting piece, and the pole ear abuts against the connecting piece, or the pole ear abuts against the pole ear of another conductive unit.
[0009] In an embodiment, the binding piece is rod-shaped, and the binding piece has a plurality of binding pieces connected by the connecting piece.
[0010] In an embodiment, the binding piece is cylindrical, the connecting piece is arranged on the upper end surface of the binding piece, the fixing part is annular, and the fixing part is arranged on the lower end of the binding piece.
[0011] In an embodiment, the lugs of each of the plurality of conductive units are arranged in the same direction as the substrate, and the lugs are arranged on the side of the substrate away from the fixed portion, and the plurality of lugs are arranged in a stepped manner in the stacking direction, and each of the lugs abuts against the connecting piece.
[0012] In an embodiment, the plurality of conductive units comprises a first conductive unit and a second conductive unit arranged below the first conductive unit, the first conductive unit comprises a first substrate and a first lug, the second conductive unit comprises a second substrate and a second lug, the first lug, the first substrate, the second lug and the second substrate are arranged in sequence, and the first lug and the second lug are arranged in a stepped manner in the stacking direction.
[0013] In an embodiment, the second lug protrudes outwardly from the first lug along the extension direction of the plane in which the second lug is arranged, the plurality of conductive units further comprises a third conductive unit arranged below the second conductive unit, the third conductive unit comprises a third substrate and a third lug, the third lug is arranged below the third substrate and corresponds to the first lug, the binding piece comprises a first binding portion and a second binding portion, the first binding portion passes through the first lug and the third lug, and the second binding portion passes through the second lug and the second substrate.
[0014] In an embodiment, the plurality of conductive units further comprises a fourth conductive unit arranged between the second conductive unit and the third conductive unit, the fourth conductive unit comprises a fourth substrate and a fourth lug, the fourth lug is arranged below the fourth substrate and corresponds to the second lug, and the second binding portion passes through the second lug and the fourth lug.
[0015] In an embodiment, the second lug protrudes outwardly from the first lug along the extension direction of the plane in which the second lug is arranged, the plurality of conductive units further comprises a third conductive unit arranged above the first conductive unit, the third conductive unit comprises a third substrate and a third lug, the third lug is arranged below the third substrate, the first lug abuts against the third lug and protrudes outwardly from the third lug along the extension direction of the plane in which the third lug is arranged, the binding piece comprises a first binding portion and a second binding portion, the first binding portion passes through the first substrate, the second substrate and the third substrate, and the second binding portion passes through the second lug and the second substrate.
[0016] In an embodiment, the second tab protrudes outwardly from the first tab along an extension direction of a plane in which the second tab lies, the plurality of conductive units further comprises a third conductive unit arranged above the first conductive unit, the third conductive unit comprises a third substrate and a third tab, the third tab is arranged below the third substrate and abuts against the first tab and the second tab, the binding member comprises a first binding part and a second binding part, the first binding part penetrates through the first substrate, the second substrate and the third substrate, the second binding part penetrates through the third substrate, the third tab, the second tab and the second substrate.
[0017] In an embodiment, the first tab protrudes outwardly from the second tab along an extension direction of a plane in which the first tab lies, the first substrate is provided with a clearance opening corresponding to the second tab, the plurality of conductive units further comprises a third conductive unit arranged above the first conductive unit, the third conductive unit comprises a third substrate and a third tab, the third tab is arranged below the third substrate, the third tab abuts against the second tab through the clearance opening, the binding member comprises a first binding part and a second binding part, the first binding part penetrates through the second substrate, the second tab, the third substrate and the third tab, the second binding part penetrates through the first tab and the first substrate.
[0018] In an embodiment, the plurality of conductive units comprises a first conductive unit and a second conductive unit arranged below the first conductive unit, the first conductive unit comprises a first substrate and a first tab, the second conductive unit comprises a second substrate and a second tab, the first tab, the first substrate, the second substrate and the second tab are sequentially distributed, the second tab protrudes outwardly from the first tab along an extension direction of a plane in which the second tab lies, the binding member comprises a first binding part and a second binding part, the first binding part penetrates through the first tab, the first substrate and the second substrate, the second binding part penetrates through the second substrate and the second tab.
[0019] The utility model discloses still provide a power supply system, including the tab misplacement's thin film electric device of preceding, through the binding structure binding connection's plurality of the conductive unit is all thin film battery unit, or through the binding structure binding connection's plurality of the conductive unit, at least one the conductive unit is thin film battery unit, and another at least one the conductive unit is the thin film electric connection terminal of electric appliance.
[0020] The technical scheme of the utility model discloses a binding structure is adopted to the misplacement distribution of the tab of the conductive unit, and the tabs of each conductive unit can be electrically connected through the binding piece and the connecting piece to realize the parallel connection or series connection between the plurality of conductive units.
[0021] Therefore, the plurality of conductive units with misplacement distribution of the tab are bound through the binding structure, which not only realizes the mechanical fixation between the plurality of conductive units, improves the mechanical performance and connection stability of the whole thin-film electrical device with misplacement distribution of the tab, but also realizes the series connection or parallel connection between the plurality of conductive units and reduces the resistance of the whole thin-film electrical device with misplacement distribution of the tab. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creative labor.
[0023] Figure 1 The structural schematic diagram of the thin-film electrical device with misplacement distribution of the tab provided by the utility model is shown in the figure.
[0024] Figure 2 The structural schematic diagram of another embodiment of the thin-film electrical device with misplacement distribution of the tab provided by the utility model is shown in the figure.
[0025] Figure 3 The structural schematic diagram of another embodiment of the thin-film electrical device with misplacement distribution of the tab provided by the utility model is shown in the figure.
[0026] Figure 4 The structural schematic diagram of another embodiment of the thin-film electrical device with misplacement distribution of the tab provided by the utility model is shown in the figure.
[0027] Figure 5Structure schematic view of the thin film electric device with the misaligned tab of a further embodiment provided by the utility model;
[0028] Figure 6 Structure schematic view of the thin film electric device with the misaligned tab of a further embodiment provided by the utility model;
[0029] Figure 7 Structure schematic view of the thin film electric device with the misaligned tab of a further embodiment provided by the utility model;
[0030] Figure 8 Structure schematic view of the thin film electric device with the misaligned tab of a further embodiment provided by the utility model;
[0031] Figure 9 Structure schematic view of the thin film electric device with the misaligned tab of a further embodiment provided by the utility model;
[0032] Figure 10 Structure schematic view of a first embodiment of the binding structure provided by the utility model;
[0033] Figure 11 Structure schematic view of a further embodiment of the binding structure provided by the utility model;
[0034] Figure 12 Top view of a plurality of embodiments of the binding structure provided by the utility model.
[0035] Explanation of the reference signs:
[0036] 10, thin film electric device; 100, first conductive unit; 200, second conductive unit; 300, third conductive unit; 400, fourth conductive unit; 500, binding structure; 110, first base; 111, avoiding port; 120, first tab; 210, second base; 220, second tab; 310, third base; 320, third tab; 410, fourth base; 420, fourth tab; 510, binding piece; 511, first binding part; 512, second binding part; 520, connecting piece; 530, fixing part.
[0037] The utility model realizes the purpose, functional characteristics and advantages, which will be further described with reference to the embodiments and the accompanying drawings. Specific implementation
[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.
[0039] It should be noted that if the embodiment of the utility model has direction indication (such as up, down, left, right, front, back), the direction indication is only used to explain the relative position relationship, movement condition and the like between components in a certain posture, if the certain posture changes, then the direction indication also changes accordingly.
[0040] In addition, if the embodiment of the utility model has the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appears in the whole text, which means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.
[0041] The utility model provides a kind of tab misplacement's thin film electric device 10.
[0042] Please refer to Figure 1 In the embodiment of the utility model, the tab misplacement's thin film electric device 10 includes a plurality of conductive units and binding structure 500, and the conductive unit includes substrate and tab, and the tab is arranged on one side of the substrate, and the plurality of conductive units are arranged in layers, and at least part of the projection of at least one tab is mispositioned with the projection of another tab;Binding structure 500 includes binding piece 510 and connecting piece 520 connected with binding piece 510, binding piece 510 is arranged through substrate and tab, so that the plurality of conductive units are connected in series or parallel;The end of binding piece 510 away from connecting piece 520 is provided with the fixed part 530 of folding, and the fixed part 530 extends inwardly towards the center line of binding structure 500, and abuts against the outer surface of conductive unit;Wherein, the tab of at least one conductive unit is arranged on the side of corresponding substrate towards connecting piece 520, and the tab abuts against connecting piece 520, or the tab abuts against the tab of another conductive unit.
[0043] Specifically, the substrate provides mechanical support for the conductive unit and can be made of materials such as glass, plastic, or metal foil. The main function of the tab is to collect current from inside the conductive unit and conduct it to an external circuit. Tabs are usually located near the edge of the substrate. When the substrate itself or its surface has a layer of conductive material (such as aluminum), it can be used directly as a tab and form a conductive path with the conductive layer. In this case, the substrate not only provides mechanical support but also participates in the electron transport process. When the substrate is non-conductive (such as glass or polymer), one or more layers of conductive material (such as a printed carbon layer) are deposited on the substrate to serve as tabs, thereby enabling the tabs to conduct current.
[0044] Each conductive unit includes a substrate and a tab, wherein the tab is located on one side of the substrate and disposed near the edge of the substrate. Multiple conductive units are stacked together and bound together by a binding structure 500 to form a single unit. In the stacking direction of the conductive units, at least a portion of the projection of at least one tab is misaligned with the projection of another tab; that is, at least two tabs are misaligned. The specific manner of tab misalignment can vary, for example, please refer to [reference needed]. Figure 1 The projections of the two electrodes have no overlap; they are completely misaligned. For example, please refer to... Figure 3 One of the electrodes has a smaller projected area, while the other has a larger projected area. The projection of the former falls entirely within the projection of the latter, while a portion of the latter's projection is misaligned with the former. For another example, please refer to... Figure 6 The third conductive unit 300, the first conductive unit 100 and the second conductive unit 200 are arranged in sequence. The second conductive unit 200 is located below the first conductive unit 100. Part of the projection of the first electrode 120 overlaps with part of the projection of the second electrode 220, and the other part of the projection of the first electrode 120 is misaligned with the other part of the projection of the second electrode 220.
[0045] The binding structure 500 includes a binding element 510 that passes through the substrate and the tabs, achieving both physical fixation and electrical connection (series or parallel) between conductive units. See also... Figure 1 One binding element 510 may pass through the base and tab of a portion of the conductive unit, and another binding element 510 may pass through the base and tab of another portion, with the two binding elements 510 interconnected by a connector 520; see also Figure 2 Alternatively, multiple tabs can be arranged in the same direction and abut against each other with connector 520, with only some tabs passing through the binding piece 510; please refer to Figure 6The binding member 510 can also pass through the substrate and the tab of the partial conductive unit, and the tabs of the other partial conductive unit are arranged opposite to each other and abut each other, and at least partially abut the connecting member 520. As long as the tabs of each conductive unit can be electrically connected through the connecting member 520 and one or more binding members 510, the number and specific passing form of the binding member 510 are not limited.
[0046] The binding member 510 not only plays a role in physical fixation, making the connection between the conductive units more secure and reducing the risk of damage caused by external vibration or impact, but also effectively connects the conductive units in series or parallel, simplifying the circuit connection inside the tab-misaligned thin-film electrical device 10 and improving electrical efficiency. According to actual needs, the series or parallel connection of the conductive units can be flexibly realized by adjusting the configuration of the binding member 510, meeting the voltage and capacity requirements in different application scenarios.
[0047] The fixing part 530 abuts the outer surface of the outermost conductive unit in the stacking direction of the conductive units. According to the distribution direction of the substrate and the tab, when the substrate of the outermost conductive unit is exposed, the fixing part 530 abuts the substrate; when the tab of the outermost conductive unit is exposed, the fixing part 530 abuts the tab. The fixing part 530 folded at the end of the binding member 510 not only tightly fixes the conductive unit, but also increases the mechanical strength of the overall structure of the tab-misaligned thin-film electrical device 10, making the entire binding structure 500 more robust and effectively resisting external impact and vibration.
[0048] The two adjacent binding members 510 are connected through the connecting member 520. When the tab abuts the connecting member 520, please refer to Figures 1 to 3 The tabs of the plurality of conductive units are electrically connected through the connecting member 520 of the binding structure 500. When the binding structure 500 completes the binding of the plurality of conductive units, the misaligned plurality of tabs will be in the same plane (the thickness of the substrate is very thin, and the thickness can be ignored after binding), and the current will be transmitted through the connecting member 520. The connecting member 520 has a large contact area with the tab, thereby increasing the contact area between the tab and the binding structure 500, reducing the resistance between the binding structure 500 and the corresponding tab, and further reducing the resistance of the entire tab-misaligned thin-film electrical device 10.
[0049] When the tab abuts the tab of another conductive unit, the contact area between the two abutting tabs is large, thereby reducing the resistance between the two abutting conductive units. Specifically, please refer to Figure 7The third conductive unit 300 is arranged above the first conductive unit 100 and the second conductive unit 200, the first tab 120 and the second tab 220 abut against the third tab 320, and the first tab 120 and the second tab 220 can be electrically connected with the third tab 320 through direct contact. The contact area between the first tab 120 and the third tab 320 and the contact area between the second tab 220 and the third tab 320 are large, thereby reducing the resistance between the first tab 120 and the third tab 320 and the resistance between the second tab 220 and the third tab 320, and further reducing the resistance of the tab-misaligned thin-film electrical device 10.
[0050] In addition, the connecting pieces 520 connect the binding pieces 510 into an integral frame, and the connecting pieces 520 make the binding pieces 510 no longer work independently, but form a mutually supporting frame structure, greatly increasing the rigidity and anti-distortion ability of the entire binding structure 500, and improving the mechanical properties, the binding stability and the reliability of the entire binding structure 500. In addition, the frame structure can provide a more uniform current distribution path, reduce the risk of local overheating, and improve the stability and reliability of the entire circuit. The binding pieces 510 are connected to each other through the connecting pieces 520 to form a unified module, which can simplify the assembly process between the conductive units and the binding structure 500 and improve the production efficiency.
[0051] The binding structure 500 is integrally formed and is made of steel, copper, tin and other easily bent and conductive metal materials. The binding structure 500 can mechanically and electrically connect the plurality of conductive units by using a pressing process, realize parallel or series connection between the plurality of conductive units, make the assembly process of the tab-misaligned thin-film electrical device 10 more simple and fast, reduce the dependence on traditional connection technologies such as welding and electric glue bonding, avoid the damage to the thin-film material caused by the high-temperature effect of welding, and also avoid the risk of gradual decline in conductive performance caused by aging of electric glue bonding.
[0052] The technical scheme of the utility model discloses a binding structure 500 is used to the misplacement distribution of the conductive unit of the tab, and the contact area between the tab and the connecting piece 520 is big when the tab of at least one conductive unit abuts against the connecting piece 520, thereby reducing the resistance between the binding structure 500 and the corresponding tab, and further reducing the resistance of the whole misplacement tab thin film electrical device 10. When the tab of at least one conductive unit abuts against the tab of another conductive unit, the contact area between the two abutting tabs is big, thereby reducing the resistance between the two abutting conductive units, and further reducing the resistance of the whole misplacement tab thin film electrical device 10. In addition, the fixed part 530 is arranged on the end of the binding part 510, and the fixed part 530 can not only tightly fix the conductive unit, but also increase the mechanical strength of the whole misplacement tab thin film electrical device 10, so that the whole binding structure 500 is more solid, thereby improving the mechanical properties and stability of the whole misplacement tab thin film electrical device 10.
[0053] Therefore, the misplacement distribution of the plurality of conductive units is bound by the binding structure 500, which not only realizes the mechanical fixation between the plurality of conductive units and improves the mechanical properties and connection stability of the whole misplacement tab thin film electrical device 10, but also realizes the series connection or parallel connection between the plurality of conductive units and reduces the resistance of the whole misplacement tab thin film electrical device 10.
[0054] In an embodiment, please refer to Figure 11 The connecting piece 520 is in a plate shape, and the plurality of binding parts 510 are distributed along the edge of the connecting piece 520, the connecting piece 520 is connected to one end of the binding part 510, and the fixed part 530 is arranged on the other end of the binding part 510 opposite to the connecting piece 520.
[0055] The connecting piece 520 is in a plate shape, and the plurality of binding parts 510 are distributed along the edge of the connecting piece 520, the connecting piece 520 is connected to one end of the binding part 510, and the fixed part 530 is arranged on the other end of the binding part 510 opposite to the connecting piece 520.
[0056] It is worth mentioning that the profile of the connecting member 520 can be circular, oval, triangular, quadrilateral, pentagonal, or other polygonal shape, or irregular shape. For details, please refer to Figure 12 , where (a) is a binding structure 500 of an embodiment, the profile of the connecting member 520 is strip-shaped; (b) is a binding structure 500 of another embodiment, the profile of the connecting member 520 is hexagonal, and the whole is strip-shaped; (c) is a binding structure 500 of another embodiment, the profile of the connecting member 520 is triangular; (d) is a binding structure 500 of another embodiment, the profile of the connecting member 520 is square. Preferably, the adjacent two line segments of the profile of the connecting member 520 form an included angle.
[0057] The linear and strip-shaped structures in (a) and (b) are used when two or a multiple of two conductive units are connected in series or parallel, the triangular structure in (c) is used when three or a multiple of three conductive units are connected in series or parallel, and the square structure in (d) is used when four or a multiple of four conductive units are connected in series or parallel. Of course, in other embodiments, the profile shape of the connecting member 520 can not have a corresponding relationship with the number of conductive units.
[0058] In another embodiment, please refer to Figure 10 and Figure 12 , the connecting member 520 is long strip-shaped, the binding members 510 are distributed along the length direction of the connecting member 520, the connecting member 520 is connected to one end of the binding member 510, and the fixing part 530 is arranged at the other end of the binding member 510 opposite to the connecting member 520.
[0059] The connecting member 520 is long strip-shaped, and the connecting member 520 provides a linear support structure. Compared with a plate shape, the long strip-shaped connecting member 520 is more focused on providing support and fixation in one direction. The binding members 510 are distributed along the length direction of the connecting member 520, which helps to ensure uniform stress and stable electrical connection between the conductive units. Please refer to Figure 10 , two binding members 510 are arranged at the two ends of the length direction of the connecting member 520; please refer to Figure 12 (a), the binding members 510 are distributed along the length direction of the connecting member 520; please refer to Figure 12 (b), the binding members 510 are distributed along the edges of the connecting member 520, and the binding members 510 are connected to the vertices of the edges of the connecting member 520. One end of each binding member 510 is fixed to the long strip-shaped connecting member 520, and the other end is provided with a fixing part 530, realizing stable physical connection and reliable electrical connection.
[0060] In an embodiment, the binding member 510 is rod-shaped, and there are multiple binding members 510, which are connected by the connecting member 520.
[0061] Referring to Figure 10 and Figure 11 , a plurality of rod-shaped binding members 510 are connected together by connecting members 520 to form an integral structure. The binding members 510 can specifically be needle-shaped with a piercing tip and a small diameter; or strip-shaped with an equal cross-section continuous extension structure and a large diameter.
[0062] In another embodiment, the binding members 510 are cylindrical, the connecting members 520 are arranged at the upper end surface of the binding members 510, and the fixing portions 530 are annular and arranged at the lower end of the binding members 510.
[0063] The binding members 510 are cylindrical and have a hollow structure, which can provide certain strength and stability. The connecting members 520 are arranged at the upper end surface of the binding members 510 and have a large area, which greatly reduces the resistance between the binding structure 500 and the corresponding tab. The fixing portions 530 are annular and arranged at the lower end of the binding members 510 and have a large area, which helps to increase the contact area between the fixing portions 530 and the corresponding conductive units, thereby improving the stability of the fixing and reducing the risk of loosening due to vibration or other external forces.
[0064] In an embodiment, referring to Figures 1 to 3 , the distribution direction of the tab and the base of each conductive unit is the same, and the tab is arranged on the side of the base away from the fixing portion 530. The plurality of tabs are distributed in a stepped manner in the stacking direction, and each tab abuts against the connecting member 520.
[0065] The distribution direction of the tab and the base is the same, and in each conductive unit, the tab and the base are arranged in the same direction, i.e., the tabs of all conductive units are arranged above the corresponding bases. This design helps to maintain the consistency and neatness of the entire tab-staggered thin film electric device 10 and simplifies the positioning and assembly steps in the manufacturing process. The plurality of tabs are distributed in a stepped manner in the stacking direction to ensure that at least part of each tab is exposed and the tab faces the connecting member 520 to ensure that each tab can directly contact the connecting member 520, thereby ensuring good electrical connection between the tab and the connecting member 520 and facilitating reliable series or parallel connection between the conductive units, thereby ensuring the stability and consistency of the performance of the entire tab-staggered thin film electric device 10. Each tab abuts against the connecting member 520, and the contact area between each tab and the connecting member 520 is large, thereby greatly reducing the resistance between the binding structure 500 and each conductive unit, thereby reducing the resistance of the entire tab-staggered thin film electric device 10. At the same time, the fixing portion 530 can also more effectively provide mechanical support when the binding member 510 passes through the base and the tab.
[0066] In an embodiment, referring toFigure 1 The plurality of conductive units include a first conductive unit 100 and a second conductive unit 200 arranged below the first conductive unit 100. The first conductive unit 100 includes a first substrate 110 and a first tab 120. The second conductive unit 200 includes a second substrate 210 and a second tab 220. The first tab 120, the first substrate 110, the second tab 220, and the second substrate 210 are arranged in sequence. The first tab 120 and the second tab 220 are arranged in a stepped manner in the stacking direction.
[0067] The first conductive unit 100 and the second conductive unit 200 are stacked in sequence from top to bottom as the first tab 120, the first substrate 110, the second tab 220, and the second substrate 210. The first tab 120 and the second tab 220 are arranged in a stepped manner in the stacking direction, that is, the first tab 120 and the second tab 220 are not directly aligned vertically but are offset by a certain distance, forming a stepped arrangement. The stepped arrangement can be that the second tab 220 protrudes outwardly from the first tab 120 along the extension direction of the plane on which the second tab 220 lies, or that the first tab 120 protrudes outwardly from the second tab 220 along the extension direction of the plane on which the first tab 120 lies.
[0068] In the embodiment, the second tab 220 protrudes outwardly from the first tab 120 along the extension direction of the plane on which the second tab 220 lies. One of the fastening members 510 is arranged through the first tab 120, the first substrate 110, and the second substrate 210, and the other fastening member 510 is arranged through the second tab 220 and the second substrate 210. The connecting member 520 connects the two fastening members 510 and abuts against the first tab 120 and the second tab 220. The connecting member 520 has a large contact area with the first tab 120 and the second tab 220, thereby reducing the electrical resistance between the fastening structure 500 and the first conductive unit 100 and the second conductive unit 200.
[0069] In an embodiment, referring to Figure 4 The second tab 220 protrudes outwardly from the first tab 120 along the extension direction of the plane on which the second tab 220 lies. The plurality of conductive units further include a third conductive unit 300 arranged below the second conductive unit 200. The third conductive unit 300 includes a third substrate 310 and a third tab 320. The third tab 320 is arranged below the third substrate 310 and corresponds to the first tab 120. The fastening member 510 includes a first fastening portion 511 and a second fastening portion 512. The first fastening portion 511 is arranged through the first tab 120 and the third tab 320, and the second fastening portion 512 is arranged through the second tab 220 and the second substrate 210.
[0070] The third conductive unit 300 is added on the basis of the previous embodiment. The first conductive unit 100, the second conductive unit 200, and the third conductive unit 300 are arranged in sequence from top to bottom. The distribution direction of the first tab 120 and the first base 110 is the same as the distribution direction of the second tab 220 and the second base 210. The distribution direction of the first tab 120 and the first base 110 is opposite to the distribution direction of the third tab 320 and the third base 310. The third tab 320 is arranged correspondingly to the first tab 120 in the stacking direction. The projection of the third tab 320 and the first tab 120 can completely overlap or partially misalign. The second tab 220 protrudes outwardly from the first tab 120 and the third tab 320 along the extension direction of the plane on which it is located.
[0071] The first binding part 511 also penetrates the third base 310 and the third tab 320, so that the first tab 120 and the third tab 320 are electrically connected through the first binding part 511. At the same time, the fixed part 530 at the lower end of the first binding part 511 abuts against the third tab 320, which increases the contact area between the first binding part 511 and the third tab 320, reduces the resistance between the binding structure 500 and the third tab 320, and further reduces the resistance of the entire tab-misaligned thin film electrical device 10.
[0072] In an embodiment, referring to Figure 5 The plurality of conductive units further include a fourth conductive unit 400 arranged between the second conductive unit 200 and the third conductive unit 300. The fourth conductive unit 400 includes a fourth base 410 and a fourth tab 420. The fourth tab 420 is arranged below the fourth base 410 and correspondingly to the second tab 220. The second binding part 512 penetrates the second tab 220 and the fourth tab 420.
[0073] The fourth conductive unit 400 is added on the basis of the previous embodiment. The first conductive unit 100, the second conductive unit 200, the fourth conductive unit 400, and the third conductive unit 300 are arranged in sequence from top to bottom. The distribution direction of the fourth tab 420 and the fourth base 410 is the same as the distribution direction of the third tab 320 and the third base 310. The fourth tab 420 is arranged correspondingly to the second tab 220 in the stacking direction. The projection of the fourth tab 420 and the second tab 220 can completely overlap or partially misalign. The fourth tab 420 protrudes outwardly from the first tab 120 and the third tab 320 along the extension direction of the plane on which it is located.
[0074] The second binding part 512 also penetrates the fourth substrate 410 and the fourth tab 420, so that the second tab 220 and the fourth tab 420 are electrically connected through the second binding part 512. Meanwhile, the fixed part 530 at the lower end of the second binding part 512 abuts against the fourth tab 420, which increases the contact area between the second binding part 512 and the fourth tab 420, reduces the resistance between the binding structure 500 and the fourth tab 420, and further reduces the resistance of the entire tab misaligned thin film electrical device 10.
[0075] In an embodiment, referring to Figure 6 The second tab 220 protrudes outwardly from the first tab 120 along the extension direction of the plane on which the second tab 220 lies. The plurality of conductive units further include a third conductive unit 300 arranged above the first conductive unit 100. The third conductive unit 300 includes a third substrate 310 and a third tab 320. The third tab 320 is arranged below the third substrate 310. The first tab 120 abuts against the third tab 320 and protrudes outwardly from the third tab 320 along the extension direction of the plane on which the first tab 120 lies. The binding member 510 includes a first binding part 511 and a second binding part 512. The first binding part 511 penetrates the first substrate 110, the second substrate 210, and the third substrate 310. The second binding part 512 penetrates the second tab 220 and the second substrate 210.
[0076] The third conductive unit 300 is arranged above the first conductive unit 100 in the embodiment, which is different from the above-mentioned embodiment. The third conductive unit 300 is arranged above the first conductive unit 100 in the embodiment. The third conductive unit 300, the first conductive unit 100, and the second conductive unit 200 are arranged in sequence from top to bottom. The distribution direction of the first tab 120 and the first substrate 110 is the same as the distribution direction of the second tab 220 and the second substrate 210. The distribution direction of the first tab 120 and the first substrate 110 is opposite to the distribution direction of the third tab 320 and the third substrate 310. The second tab 220 protrudes outwardly from the first tab 120 along the extension direction of the plane on which the second tab 220 lies. The first tab 120 protrudes outwardly from the third tab 320 along the extension direction of the plane on which the first tab 120 lies.
[0077] The first tab 120 and the second tab 220 are electrically connected through the connecting member 520, which reduces the resistance between the first conductive unit 100 and the second conductive unit 200. The first tab 120 and the third tab 320 can be electrically connected through direct contact. The contact area between the first tab 120 and the third tab 320 is large, which reduces the resistance between the first tab 120 and the third tab 320, and further reduces the resistance of the entire tab misaligned thin film electrical device 10.
[0078] The first binding part 511 penetrates the first substrate 110, the second substrate 210 and the third substrate 310, but does not penetrate the first tab 120 and the third tab 320, so that the first tab 120 and the third tab 320 are located between the first binding part 511 and the second binding part 512, in order to ensure that the connecting piece 520 can completely press the first tab 120 and the third tab 320, improve the mechanical fixation of the third tab 320, and ensure the electrical connection effect of the third tab 320 and the first tab 120. The second binding part 512 penetrates the second tab 220 and the second substrate 210, but does not penetrate the first tab 120, so as to improve the mechanical fixation of the second conductive unit 200, and ensure that the second tab 220 has a larger contact area with the connecting piece 520.
[0079] In an embodiment, referring to Figure 7 , the second tab 220 protrudes outward from the first tab 120 along the extension direction of the plane where the second tab 220 is located, and the plurality of conductive units further include a third conductive unit 300 arranged above the first conductive unit 100. The third conductive unit 300 includes a third substrate 310 and a third tab 320. The third tab 320 is arranged below the third substrate 310 and abuts against the first tab 120 and the second tab 220. The binding piece 510 includes a first binding part 511 and a second binding part 512. The first binding part 511 penetrates the first substrate 110, the second substrate 210 and the third substrate 310. The second binding part 512 penetrates the third substrate 310, the third tab 320, the second tab 220 and the second substrate 210.
[0080] Unlike the previous embodiment, the second tab 220 and the third tab 320 both protrude outward from the first tab 120 along the extension direction of the plane where the second tab 220 and the third tab 320 are located, and the projection of the third tab 320 and the projection of the first tab 120 have an overlapping part. The first tab 120 and the third tab 320 can be electrically connected by direct contact, and the contact area between the first tab 120 and the third tab 320 is large, thereby reducing the resistance between the first tab 120 and the third tab 320, and further reducing the resistance of the entire tab misaligned thin film electric device 10. The second tab 220 and the third tab 320 can be electrically connected by direct contact, and the contact area between the second tab 220 and the third tab 320 is large, thereby reducing the resistance between the second tab 220 and the third tab 320, and further reducing the resistance of the entire tab misaligned thin film electric device 10.
[0081] The first binding part 511 penetrates the first substrate 110, the second substrate 210 and the third substrate 310, but does not penetrate the first tab 120 and the third tab 320, so that the first tab 120 is located between the first binding part 511 and the second binding part 512, in order to ensure that the connecting piece 520 can completely press the first tab 120 and the third tab 320, improve the mechanical fixation of the third tab 320, and ensure the electrical connection effect of the third tab 320 and the first tab 120. The second binding part 512 penetrates the third substrate 310, the third tab 320, the second tab 220 and the second substrate 210, but does not penetrate the first tab 120, which improves the mechanical fixation of the second conductive unit 200 and the third conductive unit 300, and ensures that the second tab 220 and the third tab 320 have a larger contact area.
[0082] In an embodiment, referring to Figure 8 , the first tab 120 protrudes outwardly from the second tab 220 along the extension direction of the plane where the first tab 120 is located, and the first substrate 110 is provided with a avoiding opening 111 corresponding to the second tab 220; the plurality of conductive units further include a third conductive unit 300 arranged above the first conductive unit 100, the third conductive unit 300 including a third substrate 310 and a third tab 320, the third tab 320 being arranged below the third substrate 310, and the third tab 320 abutting against the second tab 220 through the avoiding opening 111; the binding piece 510 includes a first binding part 511 and a second binding part 512, the first binding part 511 penetrating the second substrate 210, the second tab 220, the third substrate 310 and the third tab 320, and the second binding part 512 penetrating the first tab 120 and the first substrate 110.
[0083] The first tab 120 protrudes outwardly from the second tab 220 and the third tab 320 along the extension direction of the plane where the first tab 120 is located, and the third tab 320 and the second tab 220 are arranged correspondingly in the stacking direction and abut against each other through the avoiding opening 111 on the first substrate 110. The second tab 220 and the third tab 320 can be electrically connected by direct contact, and the contact area between the second tab 220 and the third tab 320 is large, thereby reducing the resistance between the second tab 220 and the third tab 320, and further reducing the resistance of the entire tab misaligned thin film electric device 10. The first binding part 511 penetrates the second substrate 210, the second tab 220, the third substrate 310 and the third tab 320, and the second binding part 512 penetrates the first tab 120 and the first substrate 110, thereby ensuring the fastening connection between the first conductive unit 100, the second conductive unit 200 and the third conductive unit 300.
[0084] There can be no overlapping area between the first tab 120 and the third tab 320, and the first tab 120 directly abuts against the connecting piece 520. There can also be a partial area overlapping between the first tab 120 and the third tab 320, so that the first tab 120 and the third tab 320 can also be electrically connected by direct contact, so as to increase the contact area between the first tab 120 and the third tab 320, thereby reducing the resistance between the first tab 120 and the third tab 320, and further reducing the resistance of the entire tab misaligned thin film electrical device 10.
[0085] In an embodiment, referring to Figure 9 , the plurality of conductive units include a first conductive unit 100 and a second conductive unit 200 arranged below the first conductive unit 100, the first conductive unit 100 includes a first base 110 and a first tab 120, the second conductive unit 200 includes a second base 210 and a second tab 220, the first tab 120, the first base 110, the second base 210 and the second tab 220 are sequentially distributed, the second tab 220 protrudes outwardly from the first tab 120 along the extension direction of the plane on which it lies, the binding piece 510 includes a first binding part 511 and a second binding part 512, the first binding part 511 is arranged through the first tab 120, the first base 110 and the second base 210, and the second binding part 512 is arranged through the second base 210 and the second tab 220.
[0086] The first conductive unit 100 and the second conductive unit 200 are sequentially arranged from top to bottom, and the distribution direction of the first tab 120 and the first base 110 is opposite to the distribution direction of the second tab 220 and the second base 210. The first tab 120 and the second tab 220 are in a stepped distribution in the stacking direction, that is, the first tab 120 and the second tab 220 are not directly aligned vertically, but are staggered by a certain distance, forming a stepped arrangement. The stepped arrangement can be that the second tab 220 protrudes outwardly from the first tab 120 along the extension direction of the plane on which it lies, or the first tab 120 protrudes outwardly from the second tab 220 along the extension direction of the plane on which it lies.
[0087] In the embodiment, the second tab 220 protrudes outwardly from the first tab 120 along the extension direction of the plane on which the second tab 220 lies. The first binding part 511 penetrates the first tab 120, the first substrate 110 and the second substrate 210 to ensure the firm fixation of the first conductive unit 100 and the second conductive unit 200. The second binding part 512 penetrates the second substrate 210 and the second tab 220 and is electrically connected with the first binding part 511 through the connecting piece 520, thereby realizing the electrical connection between the first tab 120 and the second tab 220. The connecting piece 520 abuts against the first tab 120, and the contact area between the first tab 120 and the connecting piece 520 is large, thereby reducing the electrical resistance between the binding structure 500 and the first tab 120. The fixing part 530 at the lower end of the second binding part 512 abuts against the second tab 220, thereby increasing the contact area between the second binding part 512 and the second tab 220, reducing the electrical resistance between the binding structure 500 and the second tab 220, and further reducing the electrical resistance of the entire tab misaligned thin film electrical device 10.
[0088] The utility model also provides a power supply system, this power supply system includes tab misaligned thin film electrical device 10, the specific structure of tab misaligned thin film electrical device 10 refers to the above embodiment, because the power supply system adopts all technical schemes of above-mentioned all embodiments, therefore at least has all beneficial effects brought by the technical scheme of above-mentioned embodiment, here will not repeat.
[0089] The plurality of conductive units connected by the binding structure 500 are thin film battery units, or at least one of the plurality of conductive units connected by the binding structure 500 is a thin film battery unit, and at least one of the plurality of conductive units is a thin film electrical connection terminal of an electrical appliance.
[0090] The tab misaligned thin film electrical device 10 can be a thin film battery or an electrical appliance.
[0091] The plurality of thin film battery cells can be connected together by the binding structure 500, one thin film battery cell can be connected to one or more thin film electrical connection terminals of the electrical device by the binding structure 500, or the plurality of thin film battery cells can be connected to one or more thin film electrical connection terminals of the electrical device by the binding structure 500. The thin film electrical connection terminal refers to a specially designed sheet or area on the electrical device for direct contact with the thin film battery cell and form an electrical connection. At least one binding member 510 penetrates the thin film electrical connection terminal and the thin film battery cell, and the binding member 510 not only serves as a physical fixation, but also serves as an electrical connection. The electrical device and the thin film battery are directly connected by the binding structure 500, without the need for additional wires or other connectors, simplifying the complexity of the power supply system and reducing the assembly steps. The direct penetration type of electrical connection method reduces the contact resistance, improves the current transmission efficiency, and the binding structure 500 provides mechanical fixation, enhances the stability of the entire power supply system, and reduces the risk of failure due to poor connection.
[0092] In an embodiment, the plurality of thin film battery cells are bound by the binding structure 500, and then connected to the thin film electrical connection terminal by another binding structure 500. In another embodiment, the thin film battery cell and the thin film electrical connection terminal are connected by the same binding structure 500.
[0093] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields within the technical concept of the present application, as described in the present application and the accompanying drawings, is included in the patent protection scope of the present application.
Claims
1. A thin film electric device with tab misalignment, characterized by, The application relates to a battery, which comprises: a plurality of conductive units, each of which comprises a substrate and a tab, the tab being arranged on one side of the substrate, the plurality of conductive units being arranged in a stack, at least part of the projection of at least one of the tabs being misaligned with the projection of another of the tabs; a binding structure comprising at least one binding member and a connecting member connecting the binding members, the binding member penetrating the substrate and the tab so as to connect the plurality of conductive units in series or in parallel, the binding member being provided with a folded fixing portion at one end away from the connecting member, the fixing portion extending inwardly towards the center line of the binding structure and abutting against the outer surface of the conductive unit; wherein the tab of at least one of the conductive units is arranged on the side of the corresponding substrate facing the connecting member, the tab abutting against the connecting member or the tab abutting against the tab of another of the conductive units.
2. The tab misregistration thin film electrical device of claim 1, wherein, The binding member is in the shape of a rod, and a plurality of the binding members are connected by the connecting member; or The binding member is in the shape of a cylinder, the connecting member is arranged on the upper end surface of the binding member, the fixing portion is in the shape of a ring, and the fixing portion is arranged on the lower end of the binding member.
3. The tab misregistration thin film electrical device of claim 1, wherein, The tab of each of the conductive units is arranged on the side of the substrate away from the fixing portion, and the tabs are arranged in a stepped manner in the stacking direction, each of the tabs abutting against the connecting member.
4. The tab misregistration thin film electrical device of claim 1, wherein, The plurality of conductive units comprises a first conductive unit and a second conductive unit arranged below the first conductive unit, the first conductive unit comprises a first substrate and a first tab, the second conductive unit comprises a second substrate and a second tab, the first tab, the first substrate, the second tab and the second substrate are arranged in sequence, and the first tab and the second tab are arranged in a stepped manner in the stacking direction.
5. The tab misregistration thin film electrical device of claim 4, wherein, The second tab protrudes outwardly from the first tab along the extension direction of the plane on which the second tab is arranged, the plurality of conductive units further comprises a third conductive unit arranged below the second conductive unit, the third conductive unit comprises a third substrate and a third tab, the third tab is arranged below the third substrate and corresponds to the first tab, the binding member comprises a first binding portion and a second binding portion, the first binding portion penetrates the first tab and the third tab, and the second binding portion penetrates the second tab and the second substrate.
6. The tab misregistration thin film electrical device of claim 5, wherein, The plurality of conductive units further comprises a fourth conductive unit arranged between the second conductive unit and the third conductive unit, the fourth conductive unit comprises a fourth substrate and a fourth tab, the fourth tab is arranged below the fourth substrate and corresponds to the second tab, and the second binding portion penetrates the second tab and the fourth tab.
7. The tab misregistration thin film electrical device of claim 4, wherein, The second tab protrudes outwardly from the first tab along the extension direction of the plane on which the second tab lies, the plurality of conductive units further comprises a third conductive unit arranged above the first conductive unit, the third conductive unit comprises a third substrate and a third tab, the third tab is arranged below the third substrate, the first tab abuts against the third tab, and the first tab protrudes outwardly from the third tab along the extension direction of the plane on which the first tab lies; the binding member comprises a first binding part and a second binding part, the first binding part penetrates through the first substrate, the second substrate and the third substrate, and the second binding part penetrates through the second tab and the second substrate.
8. The tab misregistration thin film electrical device of claim 4, wherein, The second tab protrudes outwardly from the first tab along the extension direction of the plane on which the second tab lies, the plurality of conductive units further comprises a third conductive unit arranged above the first conductive unit, the third conductive unit comprises a third substrate and a third tab, the third tab is arranged below the third substrate, and the third tab abuts against the first tab and the second tab; the binding member comprises a first binding part and a second binding part, the first binding part penetrates through the first substrate, the second substrate and the third substrate, and the second binding part penetrates through the third substrate, the third tab, the second tab and the second substrate; Or, the first tab protrudes outwardly from the second tab along the extension direction of the plane on which the first tab lies, the first substrate is provided with a avoiding opening corresponding to the second tab; the plurality of conductive units further comprises a third conductive unit arranged above the first conductive unit, the third conductive unit comprises a third substrate and a third tab, the third tab is arranged below the third substrate, and the third tab abuts against the second tab through the avoiding opening; The binding member comprises a first binding part and a second binding part, the first binding part penetrates through the second substrate, the second tab, the third substrate and the third tab, and the second binding part penetrates through the first tab and the first substrate.
9. The tab misregistration thin film electrical device of claim 1, wherein, The plurality of conductive units comprises a first conductive unit and a second conductive unit arranged below the first conductive unit, the first conductive unit comprises a first substrate and a first tab, the second conductive unit comprises a second substrate and a second tab, the first tab, the first substrate, the second substrate and the second tab are sequentially distributed, the second tab protrudes outwardly from the first tab along the extension direction of the plane on which the second tab lies, the binding member comprises a first binding part and a second binding part, the first binding part penetrates through the first tab, the first substrate and the second substrate, and the second binding part penetrates through the second substrate and the second tab.
10. A power supply system characterized by comprising: The thin film electrical device comprising the tab misalignment as claimed in any one of claims 1 to 9, the plurality of conductive units connected by the binding structure are all thin film battery units; or, in the plurality of conductive units connected by the binding structure, at least one of the conductive units is a thin film battery unit, and at least one of the other conductive units is a thin film electrical connection terminal of an electrical appliance.