Perovskite battery
By setting a conductive coating layer between the conductive tape and the bottom electrode part, the conductive glass damage caused by laser scribing is solved, the passage congestion and heating problems of perovskite batteries are improved, and the current transmission efficiency is improved.
Patent Information
- Application Number
- CN202422357148.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-26
AI Technical Summary
In the prior art, laser marking leads to damage to conductive glass, resulting in congestion and heating of perovskite battery pathways.
A conductive coating layer is provided between the conductive tape and the bottom electrode member to improve passage congestion and avoid heat generation.
By setting the conductive coating layer, the microscopic damage problem of the conductive glass is improved, the current transmission efficiency is improved, and the heating phenomenon of perovskite batteries is avoided.
Smart Images
Figure CN223286161U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of perovskite battery components, in particular to a perovskite battery. Background Art
[0002] In related technologies, perovskite cells are formed by laser scribing and multi-layer structures to form multiple sub-cells connected in series. The positive and negative electrodes of the perovskite cell are formed on the conductive glass. The positive and negative electrodes are the FTO conductive layer on the conductive glass, and conductive tape is applied to the positive and negative electrodes to form a circuit lead-out method. The current process uses laser cleaning to remove the edges of the film layer in a specific area to form an application area for the conductive glass and the conductive tape. However, the laser will cause some microscopic damage to the conductive glass, thereby damaging the conductive layer on the surface of the conductive glass. After applying the conductive tape, there will be poor contact between the conductive tape and the conductive layer, resulting in congestion in the perovskite cell path and heat, affecting current transmission and thus affecting battery power. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a perovskite battery that improves the problem of congested passages and avoids heat generation.
[0004] According to an embodiment of the present invention, a perovskite battery includes: a bottom electrode member; a perovskite member, wherein the perovskite member is arranged on a first side of the bottom electrode member; a conductive tape, wherein the conductive tape is on the first side and connected to the bottom electrode member; and a conductive member, wherein the conductive member is a conductive coating layer, and the conductive member is in electrical contact with and is sandwiched between the bottom electrode member and the conductive tape.
[0005] According to the perovskite battery of the embodiment of the present invention, a conductive member is arranged between the conductive tape and the bottom electrode member, and the conductive member's own performance is used to improve the conductivity, thereby improving the problems caused by the potholes in the conductive glass, improving the congestion of the passage, and avoiding heat.
[0006] In some embodiments, the conductive members are divided into two groups, and the two groups of conductive members are disposed on opposite sides of the perovskite member, and the two groups of conductive members are electrically connected to the positive electrode and the negative electrode of the perovskite member, respectively.
[0007] In some embodiments, the conductive tape extends along the length direction of the bottom electrode member, the conductive member extends along the length direction of the bottom electrode member, and the projection of the conductive tape on the conductive member is located on the conductive member.
[0008] In some embodiments, the conductive member includes a plurality of first conductive members spaced apart in the width direction of the conductive tape, the first conductive member is a strip structure or a grid line structure, and the plurality of first conductive members are respectively connected to different parts of the same conductive tape.
[0009] In some embodiments, the conductive member includes a plurality of second conductive members spaced apart in the length direction of the conductive tape, and the second conductive members are sheet-like structures or lattice structures; the plurality of second conductive members are respectively connected to different parts of the same conductive tape.
[0010] In some embodiments, the conductive member includes a plurality of third conductive members spaced apart in the length direction of the conductive tape, the third conductive member is a grid line structure, the length direction of the grid line structure extends along the width direction of the conductive tape, and the plurality of third conductive members are respectively connected to different parts of the same conductive tape.
[0011] In some embodiments, the conductive member includes: a fourth conductive member, a plurality of the fourth conductive members are arranged at intervals in the length direction of the conductive tape, and the fourth conductive members extend along the width direction of the conductive tape; a fifth conductive member, including at least one fifth conductive member in the width direction of the conductive tape, the fifth conductive member extends along the length direction of the conductive tape, and the fifth conductive member and the fourth conductive member are cross-arranged to form a grid-like structure; wherein, the fourth conductive member and the fifth conductive member are respectively connected to different parts of the same conductive tape.
[0012] In some embodiments, the thickness of the conductive element is any value between 5 nm and 1 um.
[0013] In some embodiments, the conductive member is a metal coating layer or a conductive non-metal coating layer.
[0014] In some embodiments, the material of the metal coating layer is any one of gold, silver, copper, aluminum, tin, and molybdenum; and / or the conductive non-metallic coating layer is any one of tin oxide and graphite.
[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0017] Figure 1 A side view of a perovskite cell according to an embodiment of the present invention;
[0018] Figure 2 A top view of a perovskite cell according to an embodiment of the present invention;
[0019] Figure 3 This is a schematic diagram of the distribution of the conductive members in the first embodiment of the present utility model;
[0020] Figure 4 This is a schematic diagram of the distribution of conductive members in the second embodiment of the present utility model;
[0021] Figure 5 This is a schematic diagram of the distribution of conductive members in the third embodiment of the present utility model;
[0022] Figure 6 Schematic diagram of the distribution of conductive members in the fourth embodiment of the present utility model;
[0023] Figure 7 Schematic diagram of the distribution of conductive elements in the fifth embodiment of the present utility model.
[0024] Reference numerals:
[0025] 100. Perovskite battery;
[0026] 10. Bottom electrode component; 20. Perovskite component; 30. Busbar component; 40. Conductive tape;
[0027] 50. Conductive member; 51. First conductive member; 53. Second conductive member; 55. Third conductive member; 56. Fourth conductive member; 57. Fifth conductive member. DETAILED DESCRIPTION
[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0030] In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.
[0031] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.
[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0033] The following describes the perovskite cell 100 according to an embodiment of the present invention with reference to the accompanying drawings.
[0034] Reference Figure 1 、 Figure 2 and Figure 3 According to an embodiment of the present invention, a perovskite cell 100 includes: a bottom electrode member 10 , a perovskite member 20 , a bus bar 30 , a conductive tape 40 and a conductive member 50 .
[0035] The perovskite member 20 is disposed on a first side of the bottom electrode member 10. The conductive tape 40 is located on the first side and is connected to the bottom electrode member 10. The conductive member 50 is a conductive coating layer that is electrically connected to and sandwiched between the bottom electrode member 10 and the conductive tape 40.
[0036] The bottom electrode 10 can be made of conductive glass or metal oxide and provides a path for collecting and transmitting electrons. The bottom electrode 10 is made of conductive glass and includes a conductive layer, forming the positive and negative electrodes of the perovskite element. The perovskite element 20 is made of a perovskite material, such as methylamine lead iodide perovskite, and is used to absorb light and generate photogenerated electron-hole pairs. The conductive tape 40 is located on the same side of the bottom electrode 10 as the perovskite element 20, creating a transmission path for the photogenerated electron and hole pairs.
[0037] In related technologies, perovskite cells are formed by laser scribing and multi-layer structures to form multiple sub-cells connected in series. The positive and negative electrodes of the perovskite cell are formed on conductive glass. The positive and negative electrodes are the FTO conductive layer on the conductive glass, and conductive tape is applied to the positive and negative electrodes to form the circuit leads. The current process uses laser cleaning to remove the edges of the film layer in specific areas to form the application area of the conductive glass and the conductive tape. However, the laser can cause some microscopic damage to the conductive glass, resulting in congestion in the perovskite cell circuit and heating.
[0038] Specifically, in related technologies, lasers may cause holes to form on the conductive glass, and the conductive tape cannot adhere well to the conductive glass, causing congestion in the passage.
[0039] In the embodiment of the present invention, a conductive member 50 is provided between the conductive tape 40 and the bottom electrode member 10. The conductive member 50 is constructed as a conductive coating layer. The conductive performance of the conductive member 50 is better than that of the conductive tape 40, thereby improving the problem of path congestion and avoiding heat.
[0040] The conductive property is the ability of a material to conduct current under the action of an electric field. Specifically, the conductive property can be conductivity, resistivity, carrier concentration, carrier mobility, etc.
[0041] According to the perovskite battery 100 of the embodiment of the present invention, a conductive member 50 is provided between the conductive tape 40 and the bottom electrode member 10, and the conductive member 50 itself is used to improve the conductivity, thereby improving the problems caused by the potholes in the conductive glass, improving the congestion of the passage, and avoiding heat generation.
[0042] Among them, the conductive part 50 is a conductive coating layer. Since there are microscopic damages on the conductive glass, the coating layer is formed through the coating process, which can fill the microscopic holes and has strong adhesion. In addition, the coating layer fully covers the bottom electrode part 10 on the conductive glass, and the current transmission area is similar to the area of the conductive tape 40, thereby avoiding local path congestion and overheating.
[0043] In some specific embodiments, a busbar 30 is further included. The busbar 30 is located on one side of the perovskite component 20 and is arranged perpendicular to the conductive tape 40. A group of conductive tapes 40 are connected to one busbar 30. The busbar 30 is a busbar. One end of the busbar 30 is connected to the conductive tape 40, and the other end is led out to the outside of the battery assembly through the lead-out hole on the glass back panel.
[0044] Reference Figure 1 、 Figure 2 and Figure 3 There are two groups of conductive members 50 , which are disposed on opposite sides of the perovskite member 20 , and the two groups of conductive members 50 are electrically connected to the positive electrode and the negative electrode of the perovskite member 20 , respectively.
[0045] Among them, the conductive members 50 are constructed into two groups, and the two groups of conductive members 50 are located on opposite sides of the perovskite member 20. That is, conductive members 50 are arranged on opposite sides of the perovskite member 20, thereby occupying different azimuthal spaces, corresponding to the positive and negative pole settings of the perovskite member 20.
[0046] For example, one conductive member 50 is provided on each of the two opposite sides of the perovskite member 20; or, two conductive members 50 are provided on each of the two opposite sides of the perovskite member 20, and the two conductive members 50 on the same side are spaced apart in sequence; or, two conductive members 50 are provided on each of the two opposite sides of the perovskite member 20, and the two conductive members 50 on the same side are cross-distributed; or, more conductive members 50 are provided on each of the two opposite sides of the perovskite member 20, which will not be repeated here.
[0047] Reference Figure 1 、 Figure 2 and Figure 3 In some embodiments, the conductive tape 40 extends along the length direction of the bottom electrode member 10 , and the conductive member 50 extends along the length direction of the conductive tape 40 . The projection of the conductive tape 40 on the conductive member 50 is located on the conductive member 50 .
[0048] The conductive tape 40 and the conductive member 50 extend in the same direction, and the conductive member 50 is connected to the conductive tape 40 correspondingly.
[0049] In the above solution, by providing the conductive tape 40 and the conductive member 50 extending along the length, each space is fully utilized. The projection of the conductive member 50 on the conductive tape 40 is located on the conductive tape 40, and the conductive members 50 are connected to the conductive tape 40 in a corresponding manner, thereby smoothing the conduction and avoiding waste. Furthermore, the projection of the conductive tape 40 on the conductive member 50 is always located on the conductive member 50. In other words, the width and area of the conductive coating layer are greater than those of the conductive tape, thus ensuring that the conductive tape and the bottom electrode can fully contact each other through the conductive coating layer.
[0050] Reference Figure 4 In some specific embodiments, the conductive member 50 includes a plurality of first conductive members 51 spaced apart in the width direction of the conductive tape. The first conductive member 51 is a strip structure or a grid line structure. The plurality of first conductive members 51 are respectively connected to different parts of the same conductive tape 40.
[0051] In the above solution, by providing the first conductive member 51 and distributing the first conductive member 51 at a specific position of the perovskite member 20 , the bottom electrode member 10 and the conductive tape 40 are fully connected, thereby improving the overall performance.
[0052] Specifically, there are two first conductive members 51, extending along the length of the bottom electrode member 10. The two first conductive members 51 are located on the same side of the perovskite member 20, with one first conductive member 51 being closer to the perovskite member 20 than the other, thereby forming a long-grid conductive assembly. A conductive tape 40 is provided on the same side of the perovskite member 20, connecting the multiple first conductive members 51.
[0053] More specifically, there may be more first conductive members 51 , which will not be described in detail here.
[0054] In some specific embodiments, in the width direction of the bottom electrode member 10 , the width of the first conductive member 51 is in a range from 100 um to 1 mm.
[0055] Reference Figure 5 In some specific embodiments, the conductive member 50 includes a plurality of second conductive members 53 spaced apart in the length direction of the conductive tape 40, and the second conductive members 53 are sheet-like structures or lattice structures; the plurality of second conductive members 53 are respectively connected to different parts of the same conductive tape 40.
[0056] In the above scheme, by setting a second conductive member 53 with a sheet structure or a lattice structure, the second conductive member 53 is distributed at a specific position of the perovskite member 20, and the second conductive member 53 is connected to different positions of the conductive tape 40, fully connecting the bottom electrode member 10 and the conductive tape 40, thereby improving the overall performance.
[0057] Specifically, the second conductive member 53 extends along the length of the bottom electrode member 10. Multiple second conductive members 53 are located on the same side of the perovskite member 20. The multiple second conductive members 53 are sequentially arranged along the length of the bottom electrode member 10 to form an array-type conductive assembly. A conductive tape 40 is provided on the same side of the perovskite member 20 to connect the multiple second conductive members 50.
[0058] In some specific embodiments, the second conductive member 53 has a size ranging from 3 mm to 1 cm in the width direction of the bottom electrode member 10 .
[0059] Reference Figure 6 In some embodiments, the conductive member 50 includes a plurality of third conductive members 55 spaced apart in the length direction. The third conductive member 55 is a grid line structure. The length direction of the grid line structure extends along the width direction of the conductive tape 40. The plurality of third conductive members 55 are respectively connected to different parts of the same conductive tape 40.
[0060] The third conductive member 55 extends along the width of the bottom electrode member 10. Multiple third conductive members 55 are sequentially spaced along the length of the bottom electrode member 10 to form a short-grid conductive assembly. A conductive tape 40 is disposed on the same side of the perovskite member 20, connecting the multiple conductive members 50.
[0061] In the above solution, by setting the third conductive member 55, the third conductive member 55 is distributed at a specific position of the perovskite member 20, and the third conductive member 55 is connected to different positions of the conductive tape 40, fully connecting the bottom electrode member 10 and the conductive tape 40, thereby improving the overall performance.
[0062] In some specific embodiments, the size of the third conductive member 55 in the width direction of the bottom electrode member 10 is in the range of 3 mm to 1 cm, and the size of the third conductive member 55 in the length direction of the bottom electrode member 10 is in the range of 100 um to 1 mm.
[0063] Reference Figure 7 In some embodiments, the plurality of conductive elements 50 include a fourth conductive element 56 and a fifth conductive element 57 .
[0064] Multiple fourth conductive members 56 are spaced apart in the longitudinal direction and extend along the width of the conductive tape 40. At least one fifth conductive member 57 is included in the width direction of the conductive tape and extends along the length of the conductive tape 40. The fifth conductive member 57 intersects with the fourth conductive members 56 to form a grid-like structure. The fourth conductive members 56 and the fifth conductive members 57 are connected to different portions of the same conductive tape 40.
[0065] The fourth conductive member 56 extends along the width of the bottom electrode member 10, and the fifth conductive member 57 extends along the length of the bottom electrode member 10. The fourth and fifth conductive members 56, 57 are located on the same side of the perovskite member 20. The fifth and fourth conductive members 57, 56 are arranged crosswise to form a grid-like conductive assembly. A conductive tape 40 is provided on the same side of the perovskite member 20, connecting the multiple conductive members 50.
[0066] In the above scheme, by setting the fourth conductive member 56 and the fifth conductive member 57, the fourth conductive member 56 and the fifth conductive member 57 are distributed at specific positions of the perovskite member 20, and the fourth conductive member 56 and the fifth conductive member 57 are connected to different positions of the conductive tape 40, fully connecting the bottom electrode member 10 and the conductive tape 40, thereby improving the overall performance.
[0067] More specifically, the fourth conductive member 56 can also be set to multiple, and the multiple fourth conductive members 56 are spaced apart along the length direction of the bottom electrode member 10, or the fifth conductive member 57 can also be set to multiple, and the multiple fifth conductive members 57 are spaced apart along the width direction of the bottom electrode member 10.
[0068] In some specific embodiments, in the width direction of the bottom electrode member 10, the size of the fourth conductive member 56 is in the range of 3 mm to 1 cm, the size of the fifth conductive member 57 is in the range of 100 um to 1 mm, and in the length direction of the bottom electrode member 10, the size of the fourth conductive member 56 is in the range of 100 um to 1 mm.
[0069] In some embodiments, the thickness of the conductive element 50 is anywhere from 5 nm to 1 um.
[0070] The conductive member 50 has a certain thickness, and the thickness of the conductive member 50 is within a certain range.
[0071] In the above solution, by setting the thickness of the conductive member 50 within the range of 5 nm to 1 um, the strength of the conductive member 50 is improved, the probability of damage is reduced, and the cost is reduced.
[0072] For example, the thickness of the conductive member 50 is 5 nm; or, the thickness of the conductive member 50 is 1 um; or, the thickness of the conductive member 50 is 500 nm.
[0073] In some embodiments, the conductive element 50 is a metal coating layer. By constructing the conductive element 50 as a metal coating layer, the good conductivity of the metal coating layer is fully utilized. The material of the metal coating layer can be a metal compound or a pure metal.
[0074] In some embodiments, the metal plating layer is made of any one of gold, silver, copper, aluminum, tin, molybdenum, and tin oxide.
[0075] For example, the material of the metal coating layer is gold, which improves the conductivity; or the material of the metal coating layer is silver, which improves the conductivity; or the material of the metal coating layer is copper, which reduces the cost; or the material of the metal coating layer is aluminum, which reduces the cost; or the material of the metal coating layer is tin, which reduces the cost; or the material of the metal coating layer is molybdenum.
[0076] In other embodiments, the conductive member 50 is a conductive non-metallic coating layer, such as graphite, tin oxide, etc.
[0077] In some other embodiments, there are multiple conductive members 50, some of which are metal coating layers, and others are conductive non-metal coating layers, thereby meeting different requirements and expanding the scope of application.
[0078] In some embodiments, the process for preparing the perovskite cell 100 is as follows: 1. Coating; 2. Laser edge cleaning; 3. Metallization; 4. Application of conductive tape 40. The metal layer is prepared using a coating process, and the coating method can be selected from the following methods: magnetron sputtering, evaporation, vapor transport, etc.
[0079] Other structures and operations of the perovskite cell 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.
[0080] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0081] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A perovskite battery, characterized in that: include: a bottom electrode member (10); a perovskite member (20), the perovskite member (20) being disposed on a first side of the bottom electrode member (10); a conductive tape (40), the conductive tape (40) being located on the first side, and the conductive tape (40) being connected to the bottom electrode member (10); A conductive member (50), wherein the conductive member (50) is a conductive coating layer, and the conductive member (50) is in electrical contact with and sandwiched between the bottom electrode member (10) and the conductive tape (40).
2. The perovskite battery according to claim 1, characterized in that The conductive members (50) are in two groups, and the two groups of conductive members (50) are respectively arranged on opposite sides of the perovskite member (20), and the two groups of conductive members (50) are respectively electrically connected to the positive electrode and the negative electrode of the perovskite member (20).
3. The perovskite battery according to claim 2, characterized in that The conductive tape (40) extends along the length direction of the bottom electrode member (10), the conductive member (50) extends along the length direction of the bottom electrode member (10), and the projection of the conductive tape (40) on the conductive member (50) is located on the conductive member (50).
4. The perovskite battery according to claim 1, characterized in that The conductive member (50) comprises a plurality of first conductive members (51) spaced apart in the width direction of the conductive tape (40), wherein the first conductive members (51) are of a strip structure or a grid line structure, and the plurality of first conductive members (51) are respectively connected to different parts of the same conductive tape (40).
5. The perovskite battery according to claim 1, characterized in that The conductive member (50) comprises a plurality of second conductive members (53) spaced apart in the length direction of the conductive tape (40), wherein the second conductive members (53) are in a sheet-like structure or a lattice structure; and the plurality of second conductive members (53) are respectively connected to different parts of the same conductive tape (40).
6. The perovskite battery according to claim 1, characterized in that The conductive member (50) comprises a plurality of third conductive members (55) spaced apart in the length direction of the conductive tape (40), the third conductive member (55) being a grid line structure, the length direction of the grid line structure extending along the width direction of the conductive tape (40), and the plurality of third conductive members (55) respectively connecting different parts of the same conductive tape (40).
7. The perovskite battery according to claim 1, characterized in that The conductive member (50) comprises: a fourth conductive member (56), wherein a plurality of the fourth conductive members (56) are spaced apart in the length direction of the conductive tape (40), and the fourth conductive members (56) extend in the width direction of the conductive tape (40); A fifth conductive member (57) includes at least one fifth conductive member (57) in the width direction of the conductive tape, the fifth conductive member (57) extends along the length direction of the conductive tape (40), and the fifth conductive member (57) and the fourth conductive member (56) are arranged to cross each other to form a grid-like structure; wherein, The fourth conductive member (56) and the fifth conductive member (57) are respectively connected to different parts of the same conductive tape (40).
8. The perovskite cell according to any one of claims 1 to 7, characterized in that The thickness of the conductive element (50) is any value between 5 nm and 1 μm.
9. The perovskite cell according to any one of claims 1 to 7, characterized in that The conductive member (50) is a metal coating layer or a conductive non-metal coating layer.
10. The perovskite cell according to claim 9, characterized in that The material of the metal coating layer is any one of gold, silver, copper, aluminum, tin, and molybdenum; And / or, the conductive non-metallic coating layer is any one of tin oxide and graphite.