Printed multi-electrode structure and battery

Abstract

The utility model discloses a printing multi-electrode structure and a battery, relates to the battery technical field, the printing multi-electrode structure comprises a plurality of electrode main bodies and a plurality of collector electrode parts, the plurality of electrode main bodies are arranged along the first direction at intervals, each electrode is provided with two electric connection sides in the first direction, each electrode main body comprises a plurality of electrode layers which are stacked along a second direction, the plurality of collector electrode parts are respectively arranged corresponding to the plurality of electrode main bodies, at least one electric connection side of each electrode main body is provided with a collector electrode part, and each collector electrode part extends along the second direction so as to be connected with the plurality of electrode layers of the corresponding electrode main body; each collector electrode part and the adjacent electrode main body are arranged at an interval, and at least one electric connection side of each electrode main body is provided with the collector electrode part so as to be connected with a plurality of electrode layers of the corresponding electrode main body, so that the internal resistance of the corresponding electrode main body can be effectively reduced; therefore, the problem that the resistance of an electrode structure with a plurality of electrode layers is too high is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a printed multi-electrode structure and a battery. Background Technology

[0002] Currently, battery electrodes can be formed through printing processes, such as in thin-film batteries. Due to the demands of different application scenarios, existing thin-film batteries have varying requirements for thickness and capacity. Specifically, battery capacity is related to the thickness of the printed electrodes; higher capacity requires thicker electrodes. However, the thickness that can be printed in a single pass is limited, and excessively thick electrodes can lead to a decrease in overall mechanical properties and a higher risk of material cracking, hindering the application of thin-film batteries in various scenarios. Utility Model Content

[0003] To address the aforementioned problems, the inventors designed a printed multi-electrode structure. This structure reduces the thickness of individual electrode layers while increasing the overall thickness of the printed electrode. However, printing multiple electrode layers can easily lead to excessively high resistance in the electrode structure. Therefore, how to reduce the resistance of electrode structures with multiple electrode layers is a pressing issue that needs to be addressed.

[0004] The main purpose of this invention is to propose a printed multi-electrode structure and a battery, aiming to address the problem of excessively high resistance in electrode structures with multiple electrode layers.

[0005] To achieve the above objectives, the present invention proposes a printed multi-electrode structure, comprising:

[0006] A plurality of electrode bodies are spaced apart along a first direction, each electrode having two electrically connected sides in the first direction, and each electrode body comprising a plurality of electrode layers stacked along a second direction; and,

[0007] Multiple collector portions are respectively disposed corresponding to multiple electrode bodies, and at least one electrical connection side of each electrode body is provided with the collector portion. Each collector portion extends along the second direction to connect with multiple electrode layers of the corresponding electrode body. Each collector portion is spaced apart from the adjacent electrode body.

[0008] The first direction and the second direction are orthogonal.

[0009] In one embodiment, the collector portion includes a first collector segment and at least one second collector segment connected to the first collector segment. The first collector segment extends along the second direction, and the second collector segment is disposed corresponding to the electrode layer and extends along the first direction.

[0010] In one embodiment, the electrode body has a current collector layer on one side in the second direction; and / or,

[0011] The collector line is provided between two adjacent electrode layers.

[0012] In one embodiment, a first permeation portion is further provided between two adjacent electrode bodies, and the first permeation portion and the current collector portion are respectively disposed on two electrical connection sides opposite to the two adjacent electrode bodies; and / or,

[0013] The printed multi-electrode structure further includes a permeation layer disposed on one side of the electrode body in the second direction. The permeation layer is made of a porous material and extends along the first direction to connect with the plurality of electrode bodies.

[0014] In one embodiment, each of the electrode bodies has a through hole in its middle, and a second permeation portion is provided within the through hole. The second permeation portion extends along the second direction to connect with the plurality of electrode layers; and / or,

[0015] Each of the electrode bodies has a collector portion on both electrical connection sides, and the two collector portions between two adjacent electrode bodies are spaced apart.

[0016] In one embodiment, the plurality of electrode layers includes adjacent first electrode layers and second electrode layers;

[0017] The second permeation section includes a first permeation segment, a second permeation segment, and a third permeation segment. The first permeation segment and the second permeation segment are respectively disposed on the first electrode layer and the second electrode layer, and the third permeation segment connects the first permeation segment and the second permeation segment.

[0018] In one embodiment, the plurality of electrode bodies include a first electrode body and a second electrode body with opposite polarities, and the plurality of collector portions include a first collector portion and a second collector portion respectively disposed on the first electrode body and the second electrode body;

[0019] The printed multi-electrode structure also includes:

[0020] grassroots level;

[0021] Two current collector layers are disposed at an interval on the same side of the base layer, and the first electrode body and the second electrode body are respectively disposed on the side of the two current collector layers away from the base layer.

[0022] In one embodiment, a third permeation portion is provided between the first electrode body and the second electrode body, the third permeation portion extending along a second direction to connect with the plurality of electrode layers and the current collector layer; and / or,

[0023] A fourth permeation section is provided on the opposite side of both the first electrode body and the second electrode body.

[0024] In one embodiment, the first electrode body has a plurality of first extensions on the side facing the second electrode body, and the second electrode body has a plurality of second extensions on the side facing the first electrode body. The plurality of first extensions and the plurality of second extensions extend along a third direction and are staggered along the first direction.

[0025] Multiple first collector portions are provided, and each of the multiple first collector portions is located at one end of the first extension portion facing the second electrode body. Multiple second collector portions are provided, and each of the multiple second collector portions is located at one end of the second extension portion facing the first electrode body.

[0026] The first direction, the second direction, and the third direction are orthogonally arranged.

[0027] Furthermore, this utility model also provides a battery, including the above-mentioned printed multi-electrode structure, wherein the battery includes a thin-film battery, and the printed multi-electrode structure includes:

[0028] A plurality of electrode bodies are spaced apart along a first direction, each electrode having two electrically connected sides in the first direction, and each electrode body comprising a plurality of electrode layers stacked along a second direction; and,

[0029] Multiple collector portions are respectively disposed corresponding to multiple electrode bodies, and at least one electrical connection side of each electrode body is provided with the collector portion. Each collector portion extends along the second direction to connect with multiple electrode layers of the corresponding electrode body. Each collector portion is spaced apart from the adjacent electrode body.

[0030] The first direction and the second direction are orthogonal.

[0031] In the technical solution of this utility model, each electrode body is printed with multiple electrode layers, which can both increase the thickness of the electrode body and reduce the thickness of a single electrode layer, thereby reducing the risk of cracking of the electrode body. At least one electrical connection side of each electrode body is provided with a collector portion to connect with the multiple electrode layers of the corresponding electrode body, so as to conduct electrons from the multiple electrode layers, effectively reducing the internal resistance of the corresponding electrode body. At the same time, each collector portion is spaced apart from the adjacent electrode body, so that two adjacent electrode bodies can be disconnected, thereby reducing the stress on a single electrode body when the printed multi-electrode structure is bent, reducing the risk of cracking of the electrode body, thus solving the problem of excessively high resistance in electrode structures with multiple electrode layers. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 A cross-sectional view of the first embodiment of the printed multi-electrode structure provided by this utility model;

[0034] Figure 2 A cross-sectional view of the second embodiment of the printed multi-electrode structure provided by this utility model;

[0035] Figure 3 A cross-sectional view of the third embodiment of the printed multi-electrode structure provided by this utility model;

[0036] Figure 4 A cross-sectional view of the fourth embodiment of the printed multi-electrode structure provided by this utility model;

[0037] Figure 5 A cross-sectional view of the fifth embodiment of the printed multi-electrode structure provided by this utility model;

[0038] Figure 6 A cross-sectional view of the sixth embodiment of the printed multi-electrode structure provided by this utility model;

[0039] Figure 7 for Figure 6 A top view of the printed multi-electrode structure;

[0040] Figure 8A cross-sectional view of the seventh embodiment of the printed multi-electrode structure provided by this utility model;

[0041] Figure 9 A top view of the eighth embodiment of the printed multi-electrode structure provided by this utility model;

[0042] Figure 10 This is a top view of the ninth embodiment of the printed multi-electrode structure provided by this utility model.

[0043] Explanation of icon numbers:

[0044] 100. Printed multi-electrode structure;

[0045] 1. Electrode body; 1a. First electrode body; 1b. Second electrode body; 11. Electrode layer; 11a. First electrode layer; 11b. Second electrode layer; 12. Mounting side; 13. Electrical connection side;

[0046] 2. Collector section; 2a. First collector section; 2b. Second collector section; 21. First collector segment; 22. Second collector segment;

[0047] 3. Collector layer; 41. First permeation section; 42. Second permeation section; 421. First permeation segment; 422. Second permeation segment; 423. Third permeation segment; 43. Third permeation section; 44. Fourth permeation section; 5. Permeation layer; 6. Base layer; 71. First extension; 72. Second extension; 8. Collector wire.

[0048] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0050] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0052] Currently, battery electrodes can be formed through printing processes, such as in thin-film batteries. Due to the demands of different application scenarios, existing thin-film batteries have varying requirements for thickness and capacity. Specifically, battery capacity is related to the thickness of the printed electrodes; higher capacity requires thicker electrodes. However, the thickness that can be printed in a single pass is limited, and excessively thick electrodes can lead to a decrease in overall mechanical properties and a higher risk of material cracking, hindering the application of thin-film batteries in various scenarios.

[0053] To address the aforementioned problems, the inventors designed a printed multi-electrode structure. This structure reduces the thickness of individual electrode layers while increasing the overall thickness of the printed electrode. However, printing multiple electrode layers can easily lead to excessively high resistance in the electrode structure. Therefore, how to reduce the resistance of electrode structures with multiple electrode layers is a pressing issue that needs to be addressed.

[0054] Based on this, this utility model proposes a printed multi-electrode structure, aiming to solve the problem of excessively high resistance in electrode structures with multiple electrode layers. Among them, Figures 1 to 6 A schematic diagram of the electrode structure provided by this utility model.

[0055] Please see Figure 1 and Figure 2In one embodiment of the present invention, the printed multi-electrode structure 100 includes a plurality of electrode bodies 1 and a plurality of collector portions 2. The plurality of electrode bodies 1 are spaced apart along a first direction. Each electrode has two electrical connection sides 13 in the first direction. Each electrode body 1 includes a plurality of electrode layers 11 stacked along a second direction. The plurality of collector portions 2 are respectively disposed corresponding to the plurality of electrode bodies 1. At least one electrical connection side 13 of each electrode body 1 is provided with the collector portion 2. Each collector portion 2 extends along the second direction to connect with the plurality of electrode layers 11 of the corresponding electrode body 1. Each collector portion 2 is spaced apart from the adjacent electrode body 1. The first direction and the second direction are orthogonal.

[0056] It should be noted that the first direction and the second direction can be multiple, such as left and right, up and down, front and back, left and right, etc. This utility model does not limit them. For example, the first direction is left and right, and the second direction is up and down.

[0057] The number of electrode bodies 1 can vary, including two or three, and this invention does not limit this. Furthermore, multiple electrode bodies 1 are spaced apart along the first direction, creating gaps between adjacent electrode bodies 1. This allows the printed multi-electrode structure 100 to bend, reducing the risk of cracking in a single electrode body 1. The number of electrode layers 11 in each electrode body 1 can also vary, including two, three, four, or five, and can be adjusted according to the battery capacity. This invention does not limit this.

[0058] The main function of the collector section 2 is to efficiently collect electrons and transfer them to an external circuit. It can be made of various materials, such as metals like aluminum and copper, or carbon-based materials like carbon and graphene; this invention does not limit this. Furthermore, the extension length of the collector section 2 is not limited; please refer to [reference needed]. Figure 1 Among the multiple electrode layers 11, the uppermost electrode layer 11 is the first electrode layer 11a. The collector portion 2 can extend upward to the upper end of the first electrode layer 11a, or it can extend upward to the lower end of the first electrode layer 11a, etc., as long as it can connect the multiple electrode layers 11. This utility model does not limit this.

[0059] In the technical solution of this utility model, each electrode body 1 is printed with multiple electrode layers 11, which can both increase the thickness of the electrode body 1 and reduce the thickness of a single electrode layer 11, thereby reducing the risk of cracking of the electrode body 1. At least one electrical connection side 13 of each electrode body 1 is provided with a collector portion 2, so as to connect with the multiple electrode layers 11 of the corresponding electrode body 1 to conduct electrons out of the multiple electrode layers 11, which can effectively reduce the internal resistance of the corresponding electrode body 1. At the same time, each collector portion 2 is spaced apart from the adjacent electrode body 1, so that two adjacent electrode bodies 1 can be disconnected, thereby reducing the stress on a single electrode body 1 when the printed multi-electrode structure 100 is bent, reducing the risk of cracking of the electrode body 1, thereby solving the problem of excessively high resistance of electrode structures with multiple electrode layers 11.

[0060] In one embodiment of this utility model, please refer to Figure 1 and Figure 3 The electrode collector 2 includes a first electrode collector segment 21 and at least one second electrode collector segment 22 connected to the first electrode collector segment 21. The first electrode collector segment 21 extends along the second direction, and the second electrode collector segment 22 is disposed corresponding to the electrode layer 11 and extends along the first direction. Thus, by providing the first electrode collector segment 21, the electrode collector 2 can extend along the second direction, which facilitates the connection of multiple electrode layers 11. By providing the second electrode collector segment 22, it is convenient to connect multiple electrode layers 11 respectively, and the ink can be distributed, so that the second electrode collector segment 22 can remain flush, which is convenient for printing the electrode collector 2.

[0061] In one embodiment of this utility model, please refer to Figure 3 and Figure 4 The electrode body 1 has the collector layer 3 on one side in the second direction. By setting the collector layer 3, multiple collector portions 2 can be connected simultaneously, allowing electrons from the multiple collector portions 2 to be transferred to the outside of the printed multi-electrode structure 100, thereby helping to reduce the overall resistance of the printed multi-electrode structure 100.

[0062] In another embodiment, please refer to Figure 2The collector line 8 is provided between two adjacent electrode layers 11. It can be connected to multiple collector portions 2 at the same time, so that electrons from multiple collector portions 2 can be transferred to the outside of the printed multi-electrode structure 100. It can also be connected to two adjacent electrode layers 11 in the electrode body 1 at the same time, so that electrons from two adjacent electrode layers 11 can be transferred to the outside of the printed multi-electrode structure 100 through the collector layer 3. This helps to reduce the resistance of a single electrode body 1, thereby helping to reduce the overall resistance of the printed multi-electrode structure 100.

[0063] It should be noted that the above two related technical features, "the electrode body 1 is provided with the collector layer 3 on one side in the second direction" and "the collector line 8 is provided between two adjacent electrode layers 11", can be provided either one or both, and this utility model does not limit them.

[0064] In one embodiment of this utility model, please refer to Figure 3 A first permeation portion 41 is provided between two adjacent electrode bodies 1. The first permeation portion 41 and the current collector portion 2 are respectively located on two opposite electrical connection sides 13 of the two adjacent electrode bodies 1. Thus, by providing the first permeation portion 41, the electrolyte can permeate into the interior of the printed multi-electrode structure 100 along the second direction, increasing the contact range between the electrode body 1 and the electrolyte, facilitating the reaction between the electrode body 1 and the electrolyte, thereby helping to improve battery performance. It is understood that, in order to allow the electrolyte to permeate within the first permeation portion 41, the material of the first permeation portion 41 is often a porous material. Various porous materials are possible, such as porous fiber materials like wood and cotton, or porous polymer materials like polytetrafluoroethylene and polycarbonate; this invention does not limit the specific materials used.

[0065] In one embodiment, please refer to Figures 4 to 5 The printed multi-electrode structure 100 further includes a permeation layer 5 disposed on one side of the electrode body 1 in the second direction. The permeation layer 5 is made of a porous material and extends along the first direction to connect with the plurality of electrode bodies 1. Thus, by providing the permeation layer 5, the electrolyte can permeate into the electrode body 1 along the second direction, facilitating reaction with the electrode body 1 and thereby helping to improve battery performance. It is understood that when the printed multi-electrode structure 100 is applied to a battery, the permeation layer 5 is disposed on the side of the electrode body 1 near the electrolyte layer so that the electrolyte can permeate into the printed multi-electrode structure 100. In addition, there are various porous materials, such as porous fiber materials like wood and cotton, or porous polymer materials like polytetrafluoroethylene and polycarbonate. This utility model does not limit this.

[0066] It should be noted that the above two related technical features: "a first permeation portion 41 is provided between two adjacent electrode bodies 1, and the first permeation portion 41 and the collecting electrode portion 2 are respectively provided on two opposite electrical connection sides 13 of the two adjacent electrode bodies 1" and "the printed multi-electrode structure 100 also includes a permeation layer 5 provided on one side of the electrode body 1 in the second direction" can be provided, or they can be provided simultaneously. This utility model does not limit this.

[0067] In one embodiment of this utility model, please refer to Figure 4 and Figure 5 Each electrode body 1 has a collector portion 2 on both electrical connection sides 13, and the two collector portions 2 between two adjacent electrode bodies 1 are spaced apart. In this way, by providing two collector portions 2, electrons of the multiple electrode layers 11 in the electrode body 1 can be conducted from both ends to the outside, thereby helping to reduce the overall resistance of the printed multi-electrode structure 100.

[0068] In one embodiment of this utility model, please refer to Figure 4 and Figure 5 Each electrode body 1 has a through hole in the middle, and a second permeation part 42 is provided in the through hole. The second permeation part 42 extends along the second direction to connect with the plurality of electrode layers 11. In this way, by providing the second permeation part 42, the electrolyte can permeate into the interior of the electrode body 1 along the second direction, which can increase the contact range between the electrode layer 11 and the electrolyte in the electrode body 1, facilitate the reaction between the electrode body 1 and the electrolyte, and thus help improve the performance of the battery.

[0069] It should be noted that the above two related technical features, "each of the two electrical connection sides 13 of the electrode body 1 is provided with the current collector 2" and "each of the electrode bodies 1 is provided with a second permeation part 42 in the middle", can be provided selectively or simultaneously. This utility model does not limit this.

[0070] In one embodiment, please refer to Figure 5The plurality of electrode layers 11 include adjacent first electrode layers 11a and second electrode layers 11b. The second permeation portion 42 includes a first permeation section 421, a second permeation section 422, and a third permeation section 423. The first permeation section 421 and the second permeation section 422 are respectively disposed on the first electrode layer 11a and the second electrode layer 11b and are spaced apart along the first direction. The third permeation section 423 extends along the first direction and connects the first permeation section 421 and the second permeation section 422. Thus, the first permeation section 421 and the second permeation section 422 are spaced apart along the first direction to stagger them. By providing the third permeation section 423 to connect the first permeation section 421 and the second permeation section 422, the length of the second permeation portion 42 can be increased, which helps to increase the contact range between the electrolyte and the electrode body 1, thereby helping to improve the performance of the battery. Of course, in other embodiments, the second permeation portion 42 may also extend linearly along the second direction, and this utility model does not limit this.

[0071] In one embodiment of this utility model, please refer to Figure 6 and Figure 7The plurality of electrode bodies 1 include a first electrode body 1a and a second electrode body 1b with opposite polarities. The plurality of current collectors 2 include a first current collector 2a and a second current collector 2b respectively disposed on the first electrode body 1a and the second electrode body 1b. The printed multi-electrode structure 100 further includes a base layer 6 and two current collector layers 3. The two current collector layers 3 are spaced apart and disposed on the same side of the base layer 6. The first electrode body 1a and the second electrode body 1b are respectively disposed on the side of the two current collector layers 3 opposite to the base layer 6. The first current collector 2a and the second current collector 2b are respectively connected to the two current collector layers 3. Thus, by providing the base layer 6, so that... The first electrode body 1a and the second electrode body 1b are supported by two current collector layers 3 disposed on the same side of the base layer 6, so as to be connected to the first electrode body 1a and the second electrode body 1b respectively. The first current collector portion 2a and the second current collector portion 2b are respectively connected to the two current collector layers 3 to conduct electrons from the multiple electrode layers 11 in the two electrode bodies 1 to the outside. At the same time, the polarities of the first electrode body 1a and the second electrode body 1b are opposite, so that the printed electrode bodies 1 are coplanarly arranged, so that the positive and negative electrodes of the printed multi-electrode structure 100 can be printed on the same layer, thereby helping to reduce the cost of the printed multi-electrode structure 100. Furthermore, the first current collector portion 2a and the second current collector portion 2b are respectively disposed on the opposite side of the first electrode body 1a and the second electrode body 1b, so that the opposite side of the first electrode body 1a and the second electrode body 1b can form a permeation hole, allowing the electrolyte to diffuse into the interior of the printed multi-electrode structure 100.

[0072] It is understood that there are multiple ways in which the polarities of the first electrode body 1a and the second electrode body 1b are opposite. For example, the first electrode body 1a can be the positive electrode and the second electrode body 1b can be the negative electrode, or the first electrode body 1a can be the negative electrode and the second electrode body 1b can be the positive electrode. This utility model does not limit this.

[0073] Further, please refer to Figure 8A third permeation section 43 is provided between the first electrode body 1a and the second electrode body 1b. The third permeation section 43 extends along a second direction to connect with the plurality of electrode layers 11 and the current collector layer 3. Thus, by providing the third permeation section 43, the electrolyte can permeate along the second direction between the first electrode body 1a and the second electrode body 1b, increasing the contact range between the first electrode body 1a and the second electrode body 1b and the electrolyte, facilitating the reaction between the first electrode body 1a and the second electrode body 1b and the electrolyte, thereby helping to improve battery performance. It is understood that, in order to allow the electrolyte to permeate within the third permeation section 43, the material of the third permeation section 43 is often a porous material. Various porous materials can be used, such as porous fiber materials like wood and cotton, or porous polymer materials like polytetrafluoroethylene and polycarbonate; this invention does not limit the types of porous materials used.

[0074] In one embodiment of this utility model, please refer to Figure 8 Both the first electrode body 1a and the second electrode body 1b have a fourth permeation portion 44 on their opposite sides. This fourth permeation portion 44 allows the electrolyte to permeate along the second direction, facilitating the reaction between the electrode body 1 and the electrolyte. It is understood that, to allow the electrolyte to flow within the fourth permeation portion 44, the material of the fourth permeation portion 44 is typically a porous material. Various porous materials can be used, such as porous fibers like wood or cotton, or porous polymers like polytetrafluoroethylene or polycarbonate; this invention does not limit the type of porous material.

[0075] It should be noted that the above two related technical features, "a third permeation portion 43 is provided between the first electrode body 1a and the second electrode body 1b" and "a fourth permeation portion 44 is provided on the opposite side of the first electrode body 1a and the second electrode body 1b", can be provided either one or both, and this utility model does not limit them.

[0076] In one embodiment of this utility model, please refer to Figure 9The first electrode body 1a has a plurality of first extensions 71 on the side facing the second electrode body 1b, and the second electrode body 1b has a plurality of second extensions 72 on the side facing the first electrode body 1a. Both the plurality of first extensions 71 and the plurality of second extensions 72 extend along a third direction and are staggered along the first direction. Multiple first collector portions 2a are provided, each located at one end of the first extension 71 facing the second electrode body 1b. Multiple second collector portions 2b are provided, each located at one end of the second extension 72 facing the first electrode body 1a. The first direction, the second direction, and the third direction are orthogonal. Thus, by providing the first extension 71 and the second extension 72, the printed multi-electrode structure 100 forms a finger-like structure, which shortens the electron transport path and helps reduce the resistance of the printed multi-electrode structure 100. At the same time, by providing multiple first collector portions 2a and multiple second collector portions 2b, it is convenient to transfer electrons from the first electrode body 1a and the second electrode body 1b to the collector layer 3 along the second direction. This increases the thickness of the first electrode body 1a and the second electrode body 1b while reducing the resistance of the first electrode body 1a and the second electrode body 1b in the second direction, and also saves materials, which helps reduce the cost of the printed multi-electrode structure 100.

[0077] In one embodiment of this utility model, please refer to Figure 10 The first electrode body 1 is arranged in a ring shape to form a through hole, and the second electrode body 1b is arranged in a semi-ring shape, and is spaced apart from the second electrode body 1a and surrounds the outside of the first electrode body 1a. The first collector portion 2a is disposed in the through hole, and the second collector portion 2b is disposed at least one end of the second electrode body 1. Thus, the first electrode body 1a is arranged in a ring shape, and the second electrode body 1b is arranged in a semi-ring shape, so that the printed multi-electrode structure 100 can form a circular electrode structure.

[0078] This utility model also proposes a battery, which includes a printed multi-electrode structure 100. The specific structure of the printed multi-electrode structure 100 is as described in the above embodiments. Since this battery adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The battery includes a thin-film battery.

[0079] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A printed multi-electrode structure, characterized in that, include: A plurality of electrode bodies are spaced apart along a first direction, each electrode having two electrically connected sides in the first direction, and each electrode body comprising a plurality of electrode layers stacked along a second direction; and, Multiple collector portions are respectively disposed corresponding to multiple electrode bodies, and at least one electrical connection side of each electrode body is provided with the collector portion. Each collector portion extends along the second direction to connect with multiple electrode layers of the corresponding electrode body. Each collector portion is spaced apart from the adjacent electrode body. The first direction and the second direction are orthogonal.

2. The printed multi-electrode structure as described in claim 1, characterized in that, The collector portion includes a first collector segment and at least one second collector segment connected to the first collector segment. The first collector segment extends along the second direction, and the second collector segment is disposed corresponding to the electrode layer and extends along the first direction.

3. The printed multi-electrode structure as described in claim 1, characterized in that, The electrode body has a current collector layer on one side in the second direction; and / or, The collector line is provided between two adjacent electrode layers.

4. The printed multi-electrode structure as described in claim 1, characterized in that, A first permeation portion is further provided between two adjacent electrode bodies, and the first permeation portion and the current collector portion are respectively located on two electrical connection sides opposite to the two adjacent electrode bodies; and / or, The printed multi-electrode structure further includes a permeation layer disposed on one side of the electrode body in the second direction. The permeation layer is made of a porous material and extends along the first direction to connect with the plurality of electrode bodies.

5. The printed multi-electrode structure as described in claim 1, characterized in that, Each of the electrode bodies has a through hole in its center, and a second permeation portion is provided within the through hole. The second permeation portion extends along the second direction to connect with the plurality of electrode layers; and / or, Each of the electrode bodies has a collector portion on both electrical connection sides, and the two collector portions between two adjacent electrode bodies are spaced apart.

6. The printed multi-electrode structure as described in claim 5, characterized in that, The plurality of electrode layers includes adjacent first electrode layers and second electrode layers; The second permeation section includes a first permeation segment, a second permeation segment, and a third permeation segment. The first permeation segment and the second permeation segment are respectively disposed on the first electrode layer and the second electrode layer, and the third permeation segment connects the first permeation segment and the second permeation segment.

7. The printed multi-electrode structure as described in claim 1, characterized in that, The plurality of electrode bodies include a first electrode body and a second electrode body with opposite polarities, and the plurality of collector portions include a first collector portion and a second collector portion respectively disposed on the first electrode body and the second electrode body; The printed multi-electrode structure also includes: grassroots level; Two current collector layers are disposed at an interval on the same side of the base layer. The first electrode body and the second electrode body are respectively disposed on the side of the two current collector layers away from the base layer. The first current collector portion and the second current collector portion are respectively connected to the two current collector layers.

8. The printed multi-electrode structure as described in claim 7, characterized in that, A third permeation portion is provided between the first electrode body and the second electrode body, the third permeation portion extending along a second direction to connect with the plurality of electrode layers and the current collector layer; and / or, A fourth permeation section is provided on the opposite side of both the first electrode body and the second electrode body.

9. The printed multi-electrode structure as described in claim 7, characterized in that, The first electrode body has a plurality of first extensions on the side facing the second electrode body, and the second electrode body has a plurality of second extensions on the side facing the first electrode body. The plurality of first extensions and the plurality of second extensions extend along a third direction and are staggered along the first direction. Multiple first collector portions are provided, and each of the multiple first collector portions is located at one end of the first extension portion facing the second electrode body. Multiple second collector portions are provided, and each of the multiple second collector portions is located at one end of the second extension portion facing the first electrode body. The first direction, the second direction, and the third direction are orthogonally arranged.

10. A battery, characterized in that, The battery includes a printed multi-electrode structure as described in any one of claims 1 to 9, wherein the battery comprises a thin-film battery.

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