Thin-film electric device with folding fixing structure and power supply system

Abstract

The utility model discloses a thin-film electric device with a folding fixing structure and a power supply system, and relates to the technical field of thin-film batteries, the thin-film electric device with the folding fixing structure comprises a plurality of conductive units and binding structures, each conductive unit comprises a substrate and a tab, the tab is arranged on one side of the substrate, and the plurality of conductive units are overlapped; the binding structure comprises at least one binding piece, and the binding piece penetrates through the substrate and the tabs, so that the plurality of conductive units are connected in series or in parallel; the end part of the binding piece is provided with a folded fixing part, and the fixing part extends outwards away from the center line of the binding structure and abuts against the outer surface of the conductive unit. According to the technical scheme of the utility model, the binding structure is adopted to bind the plurality of stacked conductive units, so that the plurality of conductive units are connected in parallel or in series; and the folded fixing part is arranged at the end part of at least one binding piece, and the conductive unit is tightly fixed by the fixing part, so that the mechanical property and the connection stability of the whole thin-film electric device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to thin film battery technical field, especially a thin film electric device and power supply system with fold fixed structure. 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, when the tab of the thin film battery is stacked, the tabs of the thin film battery are connected by the conductive piece. However, this connection mode has the problem of poor connection stability between multiple thin film batteries. SUMMARY

[0004] The main purpose of the utility model is to provide a thin film electric device and power supply system with fold fixed structure, which aims to improve the stability of the thin film electric device with fold fixed structure.

[0005] To achieve the above purpose, the thin film electric device with fold fixed structure provided by the utility model comprises:

[0006] A plurality of conductive units, the conductive unit comprises a base and a tab, the tab is arranged on one side of the base, and the plurality of conductive units are arranged in layers;

[0007] The binding structure comprises at least one binding piece, the binding piece penetrates the base and the tab, so that the plurality of conductive units are connected in series or parallel; the end of the binding piece is provided with a folded fixing part, the fixing part extends outward away from the center line of the binding structure, and abuts against the outer surface of the conductive unit.

[0008] In an embodiment, the binding structure further comprises a connecting piece, and the adjacent two binding pieces are connected through the connecting piece.

[0009] In an embodiment, the binding piece has a plurality of, and the binding piece is in the form of a rod.

[0010] In an embodiment, the binding piece is in the form of a cylinder, the fixing part is in the form of a ring, and the fixing part is arranged around the upper end and / or lower end of the binding piece.

[0011] In an embodiment, the distribution direction of the first and second tabs is opposite to the distribution direction of the first and second substrates.

[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 tab, the second conductive unit comprises a second substrate and a second tab, the distribution direction of the first tab and the first substrate is opposite to the distribution direction of the second tab and the second substrate.

[0013] In an embodiment, the first substrate, the first tab, the second tab and the second substrate are arranged in sequence, and the first tab protrudes inwardly from the second tab along the extension direction of the plane where the first tab is located, the plurality of conductive units further comprises a third conductive unit arranged between the first conductive unit and the second conductive unit, the third conductive unit comprises a third substrate and a third tab, the third tab corresponding to the protruding part of the first tab is arranged above the third substrate; the binding member comprises a first binding part and a second binding part, the first tab and the third tab are electrically connected through the first binding part, and the first tab and the second tab are electrically connected through the second binding part.

[0014] In an embodiment, the first tab, the first substrate, the second substrate and the second tab are arranged in sequence; 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 second tab protrudes outwardly from the third tab along the extension direction of the plane where the second tab is located, and the protruding part of the second tab abuts against the fixed part.

[0015] In an embodiment, the first tab, the first substrate, the second substrate and the second tab are arranged in sequence; the plurality of conductive units further comprises a third conductive unit arranged below the second conductive unit and a fourth conductive unit arranged above the first conductive unit, the third conductive unit comprises a third substrate and a third tab, the fourth conductive unit comprises a fourth substrate and a fourth tab, the third tab and the fourth tab are arranged between the third substrate and the fourth substrate and protrude outwardly from the first tab and the second tab along the extension direction of the plane where the third tab and the fourth tab are located, respectively, and the fixed part near the edge of the conductive unit protrudes from the first tab and the second tab.

[0016] In an embodiment, the first tab, the first substrate, the second substrate and the second tab are sequentially arranged; the plurality of conductive units further comprises a third conductive unit arranged below the second conductive unit and a fourth conductive unit arranged above the first conductive unit, the third conductive unit comprises a third substrate and a third tab, the fourth conductive unit comprises a fourth substrate and a fourth tab, the third substrate and the fourth substrate are arranged between the third tab and the fourth tab, and the first tab and the second tab respectively protrude outward from the third tab and the fourth tab along the extension direction of the plane where they are located.

[0017] The binding member comprises a first binding part and a second binding part, the upper end and the lower end of the first binding part and the upper end and the lower end of the second binding part are provided with the fixing part, the third tab and the fourth tab are electrically connected through the first binding part, the fixing part at the upper end of the first binding part abuts against the fourth tab, and the fixing part at the lower end of the first binding part abuts against the third tab.

[0018] The first tab, the second tab, the third tab and the fourth tab are electrically connected with the second binding part, the fixing part at the upper end of the second binding part abuts against the fourth tab and the first tab, and the fixing part at the lower end of the second binding part abuts against the third tab and the second tab.

[0019] In an embodiment, the first tab, the first substrate, the second substrate and the second tab are sequentially arranged, and the first tab and the second tab are arranged in a staggered manner.

[0020] The binding member comprises a first binding part and a second binding part, the first binding part passes through the first tab, the first substrate and the second substrate, the second binding part passes through the first substrate, the second substrate and the second tab, the upper end of the first binding part and the second binding part is connected through a connecting piece, the fixing part at the lower end of the first binding part abuts against the second substrate, and the fixing part at the lower end of the second binding part abuts against the second tab.

[0021] The utility model further provides a power supply system, including the thin film electric device with the folding fixed knot structure of preceding, through the binding structure binding connection's plurality of conductive units are thin film battery unit, or through the binding structure binding connection's plurality of conductive units, at least one conductive unit is thin film battery unit, and another at least one conductive unit is the thin film electric connection terminal of electric appliance.

[0022] The technical scheme of the utility model discloses a plurality of conductive units are bound by the binding structure, and the pole lug of each conductive unit can be electrically connected through the binding piece to realize the parallel connection or series connection between the plurality of conductive units, and the fixed part of the end of at least one binding piece is arranged to be folded, the fixed part abuts against the outer surface of the conductive unit and tightly fixes the conductive unit, so that the connection between the plurality of conductive units is stable and reliable, and the setting of the fixed part can also make the whole binding structure more solid, increase the mechanical strength of the overall structure of the thin film electrical device, and thus improve the mechanical performance and the stability of the connection of the whole thin film electrical device. BRIEF DESCRIPTION OF DRAWINGS

[0023] 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 following embodiment or prior art description will be briefly introduced, 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 also be obtained according to the structure shown in the drawings without creative labor.

[0024] Figure 1 The structure schematic view of one embodiment of the thin film electrical device with the folded fixed structure provided by the utility model is shown in the figure.

[0025] Figure 2 The structure schematic view of another embodiment of the thin film electrical device with the folded fixed structure provided by the utility model is shown in the figure.

[0026] Figure 3 The structure schematic view of another embodiment of the thin film electrical device with the folded fixed structure provided by the utility model is shown in the figure.

[0027] Figure 4 The structure schematic view of another embodiment of the thin film electrical device with the folded fixed structure provided by the utility model is shown in the figure.

[0028] Figure 5 The structure schematic view of another embodiment of the thin film electrical device with the folded fixed structure provided by the utility model is shown in the figure.

[0029] Figure 6 The structure schematic view of another embodiment of the thin film electrical device with the folded fixed structure provided by the utility model is shown in the figure.

[0030] Figure 7 The structure schematic view of another embodiment of the thin film electrical device with the folded fixed structure provided by the utility model is shown in the figure.

[0031] Figure 8 The structure schematic view of another embodiment of the thin film electrical device with the folded fixed structure provided by the utility model is shown in the figure.

[0032] Figure 9 Structure diagram of another embodiment of the thin film electric device with the folded fixing structure provided by the utility model;

[0033] Figure 10 Structure diagram of another embodiment of the thin film electric device with the folded fixing structure provided by the utility model;

[0034] Figure 11 Structure diagram of an embodiment of the binding structure provided by the utility model;

[0035] Figure 12 Structure diagram of another embodiment of the binding structure provided by the utility model;

[0036] Figure 13 Structure diagram of another embodiment of the binding structure provided by the utility model;

[0037] Figure 14 Top view of multiple embodiments of the binding structure provided by the utility model.

[0038] Explanation of the reference signs:

[0039] 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; 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.

[0040] The implementation, functional features and advantages of the utility model will be further described by combining with the embodiments and referring to the drawings. Specific implementation

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below by combining with the 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 belong to the protection scope of the utility model.

[0042] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, …), the directional indications are only used to explain the relative position relationship, movement condition and the like between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0043] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, 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 of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it 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 present application.

[0044] The utility model provides a thin film electric device 10 with folding fixing structure.

[0045] Please refer to Figure 1 In an embodiment of the present application, the thin film electric device 10 with folding fixing structure includes a plurality of conductive units and a binding structure 500, the conductive unit includes a substrate and a tab, the tab is arranged on one side of the substrate, and the plurality of conductive units are arranged in layers; the binding structure 500 includes at least one binding piece 510, the binding piece 510 is arranged through the substrate and the tab, so that the plurality of conductive units are connected in series or parallel; the end of the binding piece 510 is provided with a folded fixing part 530, the fixing part 530 extends outward away from the center line of the binding structure 500, and abuts against the outer surface of the conductive unit.

[0046] Specifically, the substrate provides mechanical support for the conductive unit, and the substrate can be made of glass, plastic or metal foil and the like. The main function of the tab is to collect current from the inside of the conductive unit and lead it out to the external circuit. The tab is usually arranged close to the edge of the substrate. When the substrate itself or its surface has a layer of conductive material (such as aluminum), it can be directly used as a tab and form a conductive path with the conductive layer. At this time, the substrate not only provides mechanical support, but also participates in the electronic transmission process. When the substrate is non-conductive (such as glass or polymer), a layer or more of conductive material (such as printed carbon layer) is deposited on the substrate as a tab to realize the function of the tab leading out current.

[0047] Each conductive unit includes a substrate and a tab, wherein the tab is located on one side of the substrate and arranged close to the edge of the substrate. A plurality of conductive units are stacked together and bound together by the binding structure 500 to form an integral whole.

[0048] The binding structure 500 includes binding pieces 510 that pass through the substrates and the tabs of the conductive units to achieve physical fixation and electrical connection (series or parallel) between the conductive units. Please refer to Figure 1 Each binding piece 510 can pass through the substrate and the tab of each conductive unit; please refer to Figure 10 Alternatively, one binding piece 510 can pass through the substrate and the tab of part of the conductive units, and another binding piece 510 can pass through the substrate and the tab of another part of the conductive units, and the two binding pieces 510 are connected to each other. As long as the tab of each conductive unit can be electrically connected through one or binding pieces 510, the specific passing form of the binding pieces 510 is not limited.

[0049] The binding pieces 510 not only play 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 series or parallel the conductive units, simplifying the internal circuit connection of the thin-film electrical device 10 with the folding fixation structure and improving the 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 pieces 510, meeting the voltage and capacity requirements in different application scenarios.

[0050] The fixing part 530 abuts against 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 against the substrate; when the tab of the outermost conductive unit is exposed, the fixing part 530 abuts against the tab. The fixing part 530 folded at the end of the binding piece 510 not only tightly fixes the conductive unit, but also increases the mechanical strength of the overall structure of the thin-film electrical device 10 with the folding fixation structure, making the entire binding structure 500 more solid and effectively resisting external impact and vibration.

[0051] By setting the end of the binding piece 510 to the outwardly folded fixing part 530 and making it abut against the outer surface of the conductive unit, the stability of the connection between the binding structure 500 and the conductive unit can be effectively increased, preventing the displacement of the conductive unit when subjected to external vibration or impact and ensuring the stability of the connection between the multiple conductive units. The presence of the fixing part 530 not only enhances the physical connection strength, but also reduces the risk of resistance change caused by looseness through close contact, thereby improving the stability and reliability of the electrical connection between the multiple conductive units.

[0052] The binding structure 500 is integrally formed and made of a metal material that is easy to bend and can conduct electricity, such as steel, copper, tin, etc. The mechanical connection and electrical connection of the plurality of conductive units by the binding structure 500 can be achieved by using a pressing process, realizing parallel or series connection between the plurality of conductive units, so that the assembly process of the thin-film electrical device 10 with the folding fixing structure is simpler and faster, reducing the dependence on traditional connection technologies such as welding and electric glue bonding, avoiding the damage to the thin-film material caused by the high-temperature effect of welding, and also avoiding the risk of gradual decline in conductive performance caused by aging of electric glue bonding.

[0053] The technical scheme of the thin-film electrical device 10 with the folding fixing structure can realize parallel or series connection between the plurality of conductive units by using the binding structure 500 to bind the plurality of conductively stacked conductive units, and the binding structure 500 can be used to electrically connect the tabs of each conductive unit to realize parallel or series connection between the plurality of conductive units. The end of at least one binding member 510 is provided with a folding fixing portion 530, the fixing portion 530 abuts against the outer surface of the conductive unit and tightly fixes the conductive unit, so as to ensure stable and reliable connection between the plurality of conductive units, and the fixing portion 530 can also make the entire binding structure 500 more solid, thereby increasing the mechanical strength of the overall structure of the thin-film electrical device 10 with the folding fixing structure, and improving the mechanical properties and connection stability of the entire thin-film electrical device 10 with the folding fixing structure.

[0054] In an embodiment, please refer to Figures 11 to 13 The binding structure 500 further comprises a connecting member 520, and the adjacent two binding members 510 are connected through the connecting member 520.

[0055] The connecting member 520 connects the binding members 510 into a whole frame, and the connecting member 520 makes each binding member 510 no longer work independently, but forms a mutually supporting frame structure, greatly increasing the rigidity and anti-distortion ability of the entire binding structure 500, and improving the mechanical properties, stability and reliability of the entire binding structure 500. Moreover, such a frame structure can provide a more uniform current distribution path, reduce the risk of local overheating, and improve the stability and reliability of the overall circuit. The binding members 510 are connected to each other through the connecting member 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.

[0056] In an embodiment, the binding member 510 has a plurality of binding members 510, and the binding member 510 is in the form of a rod.

[0057] The binding member 510 can be in the form of a needle with a piercing tip and a small diameter, or in the form of a bar with an equal cross-section continuous extension structure and a large diameter. Please refer to Figure 12In another embodiment, the plurality of rod-shaped binding members 510 can be connected together by the connecting member 520 to form an integral structure. In another embodiment, the plurality of rod-shaped binding members 510 can also not be connected by the connecting member 520, but the plurality of rod-shaped binding members 510 are closely arranged in the circumferential direction.

[0058] In yet another embodiment, the binding member 510 is in a cylindrical shape, and the fixing portion 530 is in a ring shape and is arranged at the upper end and / or the lower end of the binding member 510.

[0059] Referring to Figure 13 , the binding member 510 is in a cylindrical shape and has a hollow structure, which can provide certain strength and stability. The fixing portion 530 is in a ring shape and is arranged at the upper end and / or the lower end of the binding member 510, has a large area, and helps to increase the contact area between the fixing portion 530 and the corresponding conductive unit, thereby improving the stability of the fixing and reducing the risk of loosening due to vibration or other external forces. It is worth mentioning that in the present scheme, the cylindrical binding member 510 is not provided with the connecting member 520, so that the binding structure 10 is more flexible and convenient to bind.

[0060] In an embodiment, referring to Figure 12 , the connecting member 520 is in a plate shape, the binding members 510 are arranged at intervals along the edge of the connecting member 520, the connecting member 520 is connected to one end of the binding member 510, and the fixing portion 530 is arranged at the other end of the binding member 510 opposite the connecting member 520.

[0061] The connecting member 520 is in a plate shape, and when the connecting member 520 abuts against the tab, the contact area between the tab and the connecting member 520 is larger, thereby greatly reducing the resistance between the binding structure 500 and the corresponding tab. In addition, the plate-shaped connecting member 520 provides a planar support structure, providing additional rigidity and stability, so that the entire binding structure 500 is more solid and can effectively resist external impact and vibration. The binding members 510 are arranged at intervals along the edge of the connecting member 520, which helps to evenly distribute the force and reduce the risk of damage due to local stress concentration, and can ensure that the connection between the conductive units is more stable and flat. The plate-shaped connecting member 520 integrates the binding members 510 together to form a modular assembly that is easy to operate, simplifies the assembly process between the conductive unit and the binding structure 500, and improves production efficiency.

[0062] In another embodiment, referring to Figure 13 , the connecting member 520 is in a ring shape, the binding members 510 are arranged at intervals along the edge of the connecting member 520, the connecting member 520 is connected to one end of the binding member 510, and the fixing portion 530 is arranged at the other end of the binding member 510 opposite the connecting member 520.

[0063] The connecting piece 520 is annular, forming a closed frame structure, so that the entire binding structure 500 is more stable, which is conducive to improving the mechanical stability of the entire binding structure 500. The binding pieces 510 are distributed along the edges of the connecting piece 520, which helps to evenly distribute the force and reduce the risk of damage caused by local stress concentration, and can ensure that the connection between the conductive units is more stable and flat. The annular connecting piece 520 integrates the binding pieces 510 together to form a modular assembly that is easy to operate, simplifying the assembly process between the conductive units and the binding structure 500 and improving production efficiency. The binding pieces 510 are provided with fixing parts 530 at both ends, and each binding piece 510 can not only fix the conductive unit on one side, but also fix another conductive unit from the other side, thereby forming a double-sided fixing mechanism, greatly enhancing the connection strength and stability between the conductive units.

[0064] It is worth mentioning that whether the connecting piece 520 is plate-shaped or annular, the profile of the connecting piece 520 can be circular, elliptical, triangular, quadrilateral, pentagonal, or irregular. For details, please refer to Figure 14 , wherein (a) is a binding structure 500 of an embodiment, and the profile of the connecting piece 520 is triangular; (b) is a binding structure 500 of another embodiment, and the profile of the connecting piece 520 is square. Preferably, the adjacent two line segments of the profile of the connecting piece 520 intersect to form an included angle.

[0065] The triangular structure in (a) is used when three or a multiple of three conductive units are connected in series or parallel, and the square structure in (b) 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 piece 520 and the number of conductive units can not have a corresponding relationship.

[0066] In an embodiment, please refer to Figure 1 and Figure 2 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 facing the fixing part 530. Among the two adjacent tabs, the tab away from the fixing part 530 protrudes outward along the extension direction of the plane on which it is located relative to the tab close to the fixing part 530, and each tab abuts against the fixing part 530.

[0067] The distribution direction of the tab and the base of each conductive unit 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, or the tabs of all conductive units are arranged below the corresponding bases. This design helps to maintain the consistency and neatness of the entire film electronic device 10 with the folding fixing structure, simplifying the positioning and assembly steps in the manufacturing process.

[0068] By extending outwardly from the fixing portion 530 along the extending direction of the plane on which the tab is located, each tab is ensured to have at least a part exposed on the side facing the fixing portion 530, so that each tab can be in direct contact with the fixing portion 530, thereby ensuring good electrical connection between the tab and the fixing portion 530, and ensuring the stability and consistency of the performance of the thin-film electrical device 10 with the folded fixing structure. Each tab is in abutment with the fixing portion 530, and the contact area between each tab and the fixing portion 530 is large, thereby greatly reducing the electrical resistance between the binding structure 500 and each conductive unit, thereby reducing the electrical resistance of the thin-film electrical device 10 with the folded fixing structure. At the same time, the fixing portion 530 can provide more effective mechanical support when the binding member 510 passes through the substrate and the tab. It should be explained that here, outward is with reference to the corresponding substrate, and when the tab extends away from the inside of the corresponding substrate, it is considered to extend outwardly. Similarly, when the tab extends towards the inside of the corresponding substrate, it is considered to extend inwardly.

[0069] Specifically, in an embodiment, referring to Figure 1 When the conductive unit has two, the first tab 120 is farther from the fixing portion 530 than the second tab 220, and the first tab 120 extends outwardly from the second tab 220 along the extending direction of the plane on which the tab is located. The part of the first tab 120 that extends outwardly is in abutment with the fixing portion 530, and part of the second tab 220 is also in abutment with the fixing portion 530, thereby the larger contact area between the first tab 120 and the fixing portion 530 and between the second tab 220 and the fixing portion 530 reduces the electrical resistance between the binding structure 500 and the first conductive unit 100 and the second conductive unit 200, thereby improving the electrical conductivity of the binding structure 500 and reducing the electrical resistance of the thin-film electrical device 10 with the folded fixing structure.

[0070] In an embodiment, referring to Figure 2When the conductive units are three, the distances between the first tab 120, the second tab 220 and the third tab 320 and the fixed part 530 are sequentially increased, the second tab 220 protrudes outward from the third tab 320 along the extension direction of the plane on which it lies, and the first tab 120 protrudes outward from the second tab 220 along the extension direction of the plane on which it lies, the protruding parts of the first tab 120 and the second tab 220 are in abutment with the fixed part 530, and the third tab 320 is also in abutment with the fixed part 530, so that the larger contact areas between the first tab 120 and the fixed part 530, between the second tab 220 and the fixed part 530, and between the third tab 320 and the fixed part 530 reduce the electrical resistance between the binding structure 500 and the first conductive unit 100, the second conductive unit 200 and the third conductive unit 300, thereby improving the electrical conductivity of the binding structure 500 and reducing the electrical resistance of the thin-film electrical device 10 with the folded fixed structure. When the conductive units are more than three, the same applies, which will not be described here.

[0071] In an embodiment, referring to Figure 3 , Figure 4 and Figure 10 , 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, and the second conductive unit 200 includes a second base 210 and a second tab 220, 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.

[0072] Referring to Figure 3 , the first base 110 is located above the first tab 120, and the second base 210 is located below the second tab 220, so that the first tab 120 and the second tab 220 abut each other. The electrical connection between the first tab 120 and the second tab 220 can be achieved by direct contact, at this time, the binding structure 500 plays a role in enhancing the connection stability and mechanical properties between the first tab 120 and the second tab 220. Moreover, the contact area between the first tab 120 and the second tab 220 is large, thereby reducing the electrical resistance between the first tab 120 and the second tab 220, and further reducing the electrical resistance of the entire thin-film electrical device 10 with the folded fixed structure. At the same time, the direct contact between the first tab 120 and the second tab 220 helps to achieve more direct and smooth current flow.

[0073] Referring to Figure 4 and Figure 10, the first tab 120 is located above the first substrate 110, and the second tab 220 is located below the second substrate 210. The projections of the first tab 120 and the second tab 220 in the stacking direction can overlap, be staggered, or partially overlap. At this time, the first tab 120 and the second tab 220 are electrically connected through the binding structure 500, which not only has excellent conductivity for the first tab 120 and the second tab 220, but also enhances the connection stability and mechanical properties between the first tab 120 and the second tab 220. In addition, this distribution of the first tab 120 and the second tab 220 can also promote the dispersion of heat to some extent, avoiding the phenomenon of local overheating.

[0074] In an embodiment, referring to Figure 5 , the first substrate 110, the first tab 120, the second tab 220, and the second substrate 210 are sequentially arranged, and the first tab 120 protrudes inward along the extension direction of the plane on which it is located beyond the second tab 220. The plurality of conductive units further includes a third conductive unit 300 arranged between the first conductive unit 100 and the second conductive unit 200. The third conductive unit 300 includes a third substrate 310 and a third tab 320. The third tab 320, corresponding to the protruding portion of the first tab 120, is arranged above the third substrate 310. The binding member 510 includes a first binding portion 511 and a second binding portion 512. The first tab 120 and the third tab 320 are electrically connected through the first binding portion 511, and the first tab 120 and the second tab 220 are electrically connected through the second binding portion 512.

[0075] The first conductive unit 100, the third conductive unit 300, and the second conductive unit 200 are sequentially arranged from top to bottom. The projections of the second tab 220 and the third tab 320 in the stacking direction can completely stagger or partially overlap, so that both the second tab 220 and the third tab 320 can abut against the first conductive unit 100. In this way, the first tab 120 and the third tab 320 can be electrically connected through 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 thin-film electrical device 10 with the folding fixing structure. The second tab 220 and the first tab 120 can also be electrically connected through direct contact, and the contact area between the second tab 220 and the first tab 120 is large, thereby reducing the resistance between the second tab 220 and the first tab 120, and further reducing the resistance of the entire thin-film electrical device 10 with the folding fixing structure.

[0076] The first binding part 511 is arranged through the first substrate 110, the first tab 120, the second substrate 210, the third tab 320 and the third substrate 310, and the fixed part 530 at the lower end of the first binding part 511 abuts against the second substrate 210, so as to tightly connect the first conductive unit 100, the third conductive unit 300 and the second conductive unit 200. Meanwhile, the fixed part 530 at the lower end of the first binding part 511 can also exert a certain force on the third tab 320, so that the first tab 120 and the third tab 320 are tightly connected, and the electrical connection between the first tab 120 and the third tab 320 is stable and reliable. The second binding part 512 is arranged through the third substrate 310, the third tab 320, the second tab 220 and the second substrate 210, and the fixed part 530 at the lower end of the second binding part 512 abuts against the second substrate 210, so as to exert a certain force on the second tab 220, so that the first tab 120 and the second tab 220 are tightly connected, and the electrical connection between the first tab 120 and the second tab 220 is stable and reliable.

[0077] In an embodiment, referring to Figure 6 and Figure 7 , the first tab 120, the first substrate 110, the second substrate 210 and the second tab 220 are arranged in sequence; the plurality of conductive units further comprise a third conductive unit 300 arranged below the second conductive unit 200, the third conductive unit 300 comprising a third substrate 310 and a third tab 320, the second tab 220 protruding outward from the third tab 320 along the extension direction of the plane on which the second tab 220 is arranged, and the protruding part of the second tab 220 abutting against the fixed part 530.

[0078] 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 third tab 320 can be arranged on the side of the third substrate 310 facing the second conductive unit 200, or on the other side of the third substrate 310 away from the second conductive unit 200. The design that the second tab 220 protrudes and abuts against the fixed part 530 ensures more stable electrical connection, reduces the risk of failure caused by looseness or poor contact, and also provides additional mechanical support for the second conductive unit 200 and the third conductive unit 300, thereby increasing the stability and impact resistance of the thin film electrical device 10 with the folding fixing structure.

[0079] Specifically, referring to Figure 6The third tab 320 is arranged on the side of the third substrate 310 facing the second conductive unit 200, and the third tab 320 directly contacts the second tab 220, thereby reducing the contact resistance between the third tab 320 and the second tab 220 and improving the current transmission efficiency. The protruding part of the second tab 220 abuts against the fixing part 530, and the fixing part 530 exerts a certain force on the third tab 320, so that the second tab 220 and the third tab 320 abut tightly, ensuring that the electrical connection and mechanical connection between the first tab 120 and the third tab 320 are stable and reliable. At the same time, the protruding part of the second tab 220 abuts against the fixing part 530, increasing the contact area between the second tab 220 and the fixing part 530, thereby reducing the resistance between the binding structure 500 and the second tab 220, and further reducing the resistance of the thin film electrical device 10 with the folded fixing structure.

[0080] Please refer to Figure 7 The third tab 320 is arranged on the side of the third substrate 310 facing the second conductive unit 200, and the third tab 320 directly contacts the second tab 220, thereby reducing the contact resistance between the third tab 320 and the second tab 220 and improving the current transmission efficiency. The protruding part of the second tab 220 abuts against the fixing part 530, and the fixing part 530 exerts a certain force on the third tab 320, so that the second tab 220 and the third tab 320 abut tightly, ensuring that the electrical connection and mechanical connection between the first tab 120 and the third tab 320 are stable and reliable. At the same time, the protruding part of the second tab 220 abuts against the fixing part 530, increasing the contact area between the second tab 220 and the fixing part 530, thereby reducing the resistance between the binding structure 500 and the second tab 220, and further reducing the resistance of the thin film electrical device 10 with the folded fixing structure.

[0081] In an embodiment, please refer to Figure 8 The first tab 120, the first substrate 110, the second substrate 210, and the second tab 220 are arranged in sequence; the plurality of conductive units further include a third conductive unit 300 arranged below the second conductive unit 200 and a fourth conductive unit 400 arranged above the first conductive unit 100. The third conductive unit 300 includes a third substrate 310 and a third tab 320, and the fourth conductive unit 400 includes a fourth substrate 410 and a fourth tab 420. The third tab 320 and the fourth tab 420 are arranged between the third substrate 310 and the fourth substrate 410, and protrude outward from the first tab 120 and the second tab 220 along the extension direction of the plane where they are located, respectively. The fixing part 530 near the edge of the conductive unit protrudes from the first tab 120 and the second tab 220.

[0082] The fourth conductive unit 400, the first conductive unit 100, the second conductive unit 200 and the third conductive unit 300 are sequentially arranged from top to bottom, and the first lug 120 and the fourth lug 420 are arranged opposite to each other, the second lug 220 and the third lug 320 are arranged opposite to each other, and the third lug 320 and the fourth lug 420 are both protruded from the first lug 120 and the second lug 220, so that the first lug 120 and the fourth lug 420 abut each other, the second lug 220 and the third lug 320 abut each other, and the third lug 320 and the fourth lug 420 abut each other, thereby helping to reduce the resistance loss, so that the current can flow more directly from one conductive unit to another, and the current transmission efficiency of the thin film electrical device 10 with the folding fixing structure is improved.

[0083] The fixing part 530 near the edge of the conductive unit is protruded from the first lug 120 and the second lug 220, so that the fixing part 530 exerts a certain force on the third lug 320, so that the third lug 320 is tightly abutted with the second lug 220 and the fourth lug 420 respectively, and the electrical connection and mechanical connection between the second lug 220 and the third lug 320 and between the fourth lug 420 and the third lug 320 are both stable and reliable, thereby increasing the physical connection strength between the conductive units, preventing displacement or loosening caused by vibration or external force, and enhancing the mechanical stability of the overall structure.

[0084] In an embodiment, please refer to Figure 9, the first lug 120, the first substrate 110, the second substrate 210 and the second lug 220 are sequentially arranged; the plurality of conductive units further include a third conductive unit 300 arranged below the second conductive unit 200 and a fourth conductive unit 400 arranged above the first conductive unit 100, the third conductive unit 300 includes a third substrate 310 and a third lug 320, the fourth conductive unit 400 includes a fourth substrate 410 and a fourth lug 420, the third substrate 310 and the fourth substrate 410 are arranged between the third lug 320 and the fourth lug 420, the first lug 120 and the second lug 220 respectively protrude outward from the third lug 320 and the fourth lug 420 along the extension direction of the plane where they are located; the binding member 510 includes a first binding part 511 and a second binding part 512, the upper end and the lower end of the first binding part 511 and the upper end and the lower end of the second binding part 512 are provided with a fixing part 530, the third lug 320 and the fourth lug 420 are electrically connected through the first binding part 511, the fixing part 530 at the upper end of the first binding part 511 abuts against the fourth lug 420, and the fixing part 530 at the lower end of the first binding part 511 abuts against the third lug 320; the first lug 120, the second lug 220, the third lug 320 and the fourth lug 420 are all electrically connected with the second binding part 512, the fixing part 530 at the upper end of the second binding part 512 abuts against the fourth lug 420 and the first lug 120, and the fixing part 530 at the lower end of the second binding part 512 abuts against the third lug 320 and the second lug 220.

[0085] The fourth conductive unit 400, the first conductive unit 100, the second conductive unit 200 and the third conductive unit 300 are sequentially arranged from top to bottom, the first lug 120 is located above the first substrate 110, and the distribution direction of the fourth substrate 410 and the fourth lug 420 is the same as that of the first lug 120 and the first substrate 110; the second lug 220 is located below the second substrate 210, and the distribution direction of the third substrate 310 and the third lug 320 is the same as that of the second lug 220 and the second substrate 210.

[0086] The first binding part 511 and the second binding part 512 both pass through the fourth lug 420 and the third lug 320, realizing the electrical connection between the fourth lug 420 and the third lug 320, and meanwhile, the upper end and the lower end of the first binding part 511 and the upper end and the lower end of the second binding part 512 are provided with a fixing part 530, the fixing parts 530 at the upper end and the lower end of the first binding part 511 and the second binding part 512 respectively abut against the fourth lug 420 and the third lug 320, realizing the edge locking and fixing of the inner side and the outer side of the fourth lug 420 and the third lug 320, and reducing the risk of edge lifting or unreliable connection of the fourth lug 420 and the third lug 320.

[0087] In addition, the second binding part 512 also penetrates the first tab 120 and the second tab 220, realizing the electrical connection between the first tab 120 and the second tab 220, and the fixed parts 530 at the upper and lower ends of the second binding part 512 abut against the first tab 120 and the second tab 220 respectively, the first tab 120 and the fourth tab 420 both abut against the fixed part 530 at the upper end of the second binding part 512, and the second tab 220 and the third tab 320 abut against the fixed part 530 at the lower end of the second binding part 512. When the binding is completed, the protruding parts of the fourth tab 420 and the first tab 120 will be in the same plane, the current will be transmitted through the fixed part 530 at the upper end of the second binding part 512, the contact area of the fixed part 530 with the fourth tab 420 and the first tab 120 is large, thereby reducing the resistance between the binding structure 500 and the fourth tab 420 and the first tab 120. The protruding parts of the third tab 320 and the second tab 220 will be in the same plane, the current will be transmitted through the fixed part 530 at the lower end of the second binding part 512, the contact area of the fixed part 530 with the third tab 320 and the second tab 220 is large, thereby reducing the resistance between the binding structure 500 and the third tab 320 and the second tab 220, thereby reducing the resistance of the entire thin film electrical device 10 with the folding fixing structure.

[0088] In addition, the fixed parts 530 at the two ends of the first binding part 511 and the second binding part 512 abut against the corresponding base and tab, greatly enhancing the connection strength and stability between the four conductive units, thereby forming a double-sided fixing mechanism for the thin film electrical device 10 with the folding fixing structure, which helps to prevent displacement or damage between the conductive units due to external pressure or vibration. In this embodiment, the connection piece 520 is cancelled, thereby cancelling the restriction of the connection piece 520 on the conductive units, the fixed part can connect conductive units in different directions, and further can more flexibly utilize the fixed part 530 to make more diversified combination connection of the conductive units, thereby increasing more use scenarios in actual use.

[0089] In an embodiment, referring to Figure 10 , the first tab 120, the first base 110, the second base 210 and the second tab 220 are sequentially arranged, and the first tab 120 and the second tab 220 are arranged in a staggered manner; the binding piece 510 includes a first binding part 511 and a second binding part 512, the first binding part 511 penetrates the first tab 120, the first base 110 and the second base 210, the second binding part 512 penetrates the first base 110, the second base 210 and the second tab 220, the upper ends of the first binding part 511 and the second binding part 512 are connected by the connection piece 520, the fixed part 530 at the lower end of the first binding part 511 abuts against the second base 210, and the fixed part 530 at the lower end of the second binding part 512 abuts against the second tab 220.

[0090] The first conductive unit 100 and the second conductive unit 200 are arranged in sequence from top to bottom, and the distribution direction of the first lug 120 and the first base 110 is opposite to the distribution direction of the second lug 220 and the second base 210. The first lug 120 and the second lug 220 are in a stepped distribution in the stacking direction, that is, the first lug 120 and the second lug 220 are not directly aligned up and down, but are staggered by a certain distance to form a stepped arrangement. The stepped arrangement can specifically be that the second lug 220 protrudes outward from the first lug 120 along the extension direction of the plane where the second lug 220 is located, or the first lug 120 protrudes outward from the second lug 220 along the extension direction of the plane where the first lug 120 is located.

[0091] In the embodiment, the second lug 220 protrudes outward from the first lug 120 along the extension direction of the plane where the second lug 220 is located. The first binding part 511 penetrates the first lug 120, the first base 110 and the second base 210 to ensure firm fixation of the first conductive unit 100 and the second conductive unit 200. The second binding part 512 penetrates the second base 210 and the second lug 220 and is electrically connected with the first binding part 511 through the connecting piece 520, thereby realizing electrical connection between the first lug 120 and the second lug 220. The connecting piece 520 abuts against the first lug 120, and the contact area between the first lug 120 and the connecting piece 520 is large, thereby reducing the electrical resistance between the binding structure 500 and the first lug 120. The fixing part 530 at the lower end of the second binding part 512 abuts against the second lug 220, thereby increasing the contact area between the second binding part 512 and the second lug 220, reducing the electrical resistance between the binding structure 500 and the second lug 220, and further reducing the electrical resistance of the entire thin-film electrical device 10 with the folding fixation structure.

[0092] The utility model also proposes a power supply system, this power supply system includes the thin-film electrical device 10 with folding fixation structure, the specific structure of this thin-film electrical device 10 with folding fixation structure refers to the above embodiment, because this power supply system adopts all technical schemes of the above all embodiments, therefore at least has all beneficial effects brought by the technical scheme of the above embodiment, here will not repeat again.

[0093] Among them, the plurality of conductive units connected by the binding structure 500 are thin-film battery units, or among the plurality of conductive units connected by the binding structure 500, at least one conductive unit is a thin-film battery unit, and at least one other conductive unit is a thin-film electrical connection terminal of an electrical appliance.

[0094] The thin-film electrical device 10 with the folding fixation structure can be a thin-film battery or an electrical appliance.

[0095] 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.

[0096] 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.

[0097] 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 electrical device with a folding and fixing structure, characterized in that, The utility model relates to a plurality of conductive units, the conductive unit includes the substrate and the tab, the tab is located one side of the substrate, the plurality of conductive units are overlaid and arranged, the binding structure includes at least one binding piece, the binding piece is threaded the substrate and the tab, to make the plurality of conductive units series or parallel connection, the end of binding piece is equipped with the fixed part of folding, the fixed part extends outward away from the midline of binding structure, and the outer surface of conductive unit is abutted. The binding structure further includes a connecting piece, and the adjacent two binding pieces are connected through the connecting piece; or The binding piece has a plurality of, and the binding piece is rod-shaped; or 2. The thin film device having a fold fixing structure according to claim 1, wherein, The binding piece is cylindrical, the fixed part is annular, and the fixed part is annularly arranged at the upper end and / or lower end of the binding piece. The distribution direction of the tab and the substrate of each conductive unit is the same, and the tab is located on the side of the substrate facing the fixed part, among the adjacent two tabs, the tab away from the fixed part protrudes outward along the extension direction of the plane where it is located than the tab close to the fixed part, and each tab abuts the fixed part. The plurality of conductive units include a first conductive unit and a second conductive unit arranged below the first conductive unit, the first conductive unit includes a first substrate and a first tab, the second conductive unit includes a second substrate and a second tab, the distribution direction of the first tab and the first substrate is opposite to the distribution direction of the second tab and the second substrate.

3. The thin film device having a folding fixation structure according to claim 1, wherein, The first substrate, the first tab, the second tab and the second substrate are sequentially arranged, and the first tab protrudes inward along the extension direction of the plane where it is located than the second tab, the plurality of conductive units further include a third conductive unit arranged between the first conductive unit and the second conductive unit, the third conductive unit includes a third substrate and a third tab, the third tab corresponding to the protruding part of the first tab is arranged above the third substrate; the binding piece includes a first binding part and a second binding part, the first tab and the third tab are electrically connected through the first binding part, and the first tab and the second tab are electrically connected through the second binding part.

4. The thin film device having a folding fixation structure according to claim 1, wherein, The first tab, the first substrate, the second substrate and the second tab are sequentially arranged; the plurality of conductive units further include a third conductive unit arranged below the second conductive unit, the third conductive unit includes a third substrate and a third tab, the second tab protrudes outward along the extension direction of the plane where it is located than the third tab, and the protruding part of the second tab abuts the fixed part.

5. The thin film device having a folding fixation structure according to claim 4, wherein, ​ 6. The thin film device having a folding fixation structure according to claim 4, wherein the folding fixation structure is formed by folding the thin film device in a predetermined direction. ​ 7. The thin film device having a folding fixation structure according to claim 4, wherein the folding fixation structure is formed by folding the thin film device in a predetermined direction. The first lug, the first base, the second base and the second lug are sequentially arranged; the plurality of conductive units further comprises a third conductive unit arranged below the second conductive unit and a fourth conductive unit arranged above the first conductive unit, the third conductive unit comprises a third base and a third lug, the fourth conductive unit comprises a fourth base and a fourth lug, the third base and the fourth base are arranged between the third lug and the fourth lug, and the first lug and the second lug respectively protrude outward from the third lug and the fourth lug along the extension direction of the plane where they are located.

8. The thin film device having a folding fixation structure according to claim 4, wherein, The first lug, the first base, the second base and the second lug are sequentially arranged; the plurality of conductive units further comprises a third conductive unit arranged below the second conductive unit and a fourth conductive unit arranged above the first conductive unit, the third conductive unit comprises a third base and a third lug, the fourth conductive unit comprises a fourth base and a fourth lug, the third base and the fourth base are arranged between the third lug and the fourth lug, and the first lug and the second lug respectively protrude outward from the third lug and the fourth lug along the extension direction of the plane where they are located. The binding member comprises a first binding part and a second binding part, the upper end and the lower end of the first binding part and the upper end and the lower end of the second binding part are provided with the fixed part, the third lug and the fourth lug are electrically connected through the first binding part, the fixed part of the upper end of the first binding part abuts against the fourth lug, and the fixed part of the lower end of the first binding part abuts against the third lug. The first lug, the second lug, the third lug and the fourth lug are electrically connected with the second binding part, the fixed part of the upper end of the second binding part abuts against the fourth lug and the first lug, and the fixed part of the lower end of the second binding part abuts against the third lug and the second lug.

9. The thin film device having a folding fixation structure according to claim 4, wherein, The first lug, the first base, the second base and the second lug are sequentially arranged, and the first lug and the second lug are arranged in a staggered manner. The binding member comprises a first binding part and a second binding part, the first binding part penetrates the first lug, the first base and the second base, the second binding part penetrates the first base, the second base and the second lug, the upper end of the first binding part and the second binding part is connected through a connecting piece, the fixed part of the lower end of the first binding part abuts against the second base, and the fixed part of the lower end of the second binding part abuts against the second lug.

10. A power supply system characterized by comprising: The thin film electrical device with the folding fixed structure as claimed in any one of claims 1 to 9, the plurality of conductive units connected through the binding structure are all thin film battery units; or in the plurality of conductive units connected through the binding structure, at least one conductive unit is a thin film battery unit, and at least one other conductive unit is a thin film electrical connection terminal of an electrical appliance.

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