A microbattery array and electronic device

Abstract

This invention discloses a micro battery array and an electronic device. The micro battery array includes: multiple battery cells arranged in an array; each battery cell includes an electrode structure, an electrolyte, and a driving circuit; the electrode structure includes a first electrode and a second electrode spaced apart; the driving circuit is electrically connected to the first electrode and / or the second electrode; the electrolyte is in contact with the first electrode and the second electrode; the micro battery array further includes: a substrate; a driving circuit layer located on one side of the substrate; the driving circuit layer includes a driving circuit; a first electrode, a second electrode, and a blocking structure located on the side of the driving circuit layer opposite to the substrate; the blocking structure is located between the electrolytes of at least two adjacent battery cells, and the blocking structure and the first electrode and the second electrode of the same battery cell form a receiving space; the electrolyte is located within the receiving space. Using the above technical solution facilitates the thinning and lightening of the micro battery array, and also improves reliability and energy density.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to a micro battery array and electronic device. Background Technology

[0002] With the trend towards thinner and more portable electronic devices, existing manufacturing processes for micro batteries are insufficient to achieve both thinness and miniaturization, thus failing to meet the power supply requirements of wearable and micro electronic devices. Summary of the Invention

[0003] This invention provides a micro battery array and an electronic device to solve the problem that existing micro battery manufacturing processes are difficult to achieve in terms of battery thinness and miniaturization, thereby meeting the power supply requirements of wearable electronic devices and micro electronic devices.

[0004] According to one aspect of the present invention, a micro battery array is provided, comprising: a plurality of battery cells arranged in an array; each battery cell includes an electrode structure, an electrolyte, and a driving circuit; the electrode structure includes a first electrode and a second electrode spaced apart; the driving circuit is electrically connected to the first electrode and / or the second electrode; and the electrolyte is in contact with the first electrode and the second electrode.

[0005] The micro battery array also includes:

[0006] Substrate;

[0007] A driving circuit layer located on one side of the substrate; the driving circuit layer includes the driving circuit.

[0008] The first electrode, the second electrode, and the blocking structure are located on the side of the driving circuit layer opposite to the substrate; the blocking structure is located between the electrolytes of at least two adjacent battery cells, and the blocking structure and the first electrode and the second electrode of the same battery cell form a receiving space; the electrolyte is located within the receiving space.

[0009] According to another aspect of the present invention, an electronic device is provided, comprising the aforementioned micro battery array.

[0010] The technical solution of this invention provides a driving circuit layer on one side of the substrate, with the driving circuit in the driving circuit layer electrically connected to the first electrode and / or the second electrode of the battery cell. This allows for the control of charging or discharging of the battery cell, thereby enabling the combination of different battery cells in a micro battery array, suitable for various scenarios. The driving circuit layer and electrode structure can be fabricated using processes such as deposition and sputtering, which is beneficial for the high precision and thinness of the micro battery array. By setting a barrier structure on the side of the driving circuit layer away from the substrate, and the electrolyte located within the containment space formed by the barrier structure and the first and second electrodes of the battery cell to which the electrolyte belongs, the barrier structure can block the flow of the electrolyte, improving the sealing of the battery cell and preventing the electrolyte from flowing to adjacent battery cells. This allows for a variety of electrolyte materials, increasing the selectivity of the electrolyte material and improving the reliability and energy density of the battery cell, thereby improving the reliability and energy density of the micro battery array. In terms of fabrication process, the electrolyte can be prepared using a one-drop filling (ODF) process, reducing production costs.

[0011] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a battery in the prior art;

[0014] Figure 2 This is a schematic diagram of a micro battery array provided in an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of a battery cell provided in an embodiment of the present invention;

[0016] Figure 4 This is a schematic diagram of another battery cell provided in an embodiment of the present invention;

[0017] Figure 5 This is a schematic diagram of another battery cell provided in an embodiment of the present invention;

[0018] Figure 6This is a schematic diagram of another battery cell provided in an embodiment of the present invention;

[0019] Figure 7 This is a schematic diagram of another battery cell provided in an embodiment of the present invention;

[0020] Figure 8 This is a schematic diagram of another battery cell provided in an embodiment of the present invention;

[0021] Figure 9 This is a schematic diagram of an electrode structure provided in an embodiment of the present invention;

[0022] Figure 10 This is a schematic diagram of another electrode structure provided in an embodiment of the present invention;

[0023] Figure 11 This is a schematic diagram of another battery cell provided in an embodiment of the present invention;

[0024] Figure 12 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention;

[0025] Figure 13 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention;

[0026] Figure 14 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention;

[0027] Figure 15 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention;

[0028] Figure 16 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention;

[0029] Figure 17 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention;

[0030] Figure 18 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention;

[0031] Figure 19 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention;

[0032] Figure 20 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Figure 1 This is a schematic diagram of the structure of a battery in the prior art, for reference. Figure 1 The battery 01 includes a first battery casing 02, a positive current collector 03, a positive electrode 04, an electrolyte 05, a negative electrode 06, a negative current collector 07, and a second battery casing 08. The positive current collector 03 and the negative current collector 07 are typically manufactured using a coating method, and the positive electrode 04 and the negative electrode 06 are also typically manufactured using a coating method on the surfaces of the positive current collector 03 and the negative current collector 07 and then dried.

[0036] Currently, battery 01 is generally a stacked structure. Due to the influence of the structure, the choice of materials is limited. While continuously reducing the size of battery 01, it is difficult to balance the size and performance of battery 01, and it cannot meet the power supply needs of wearable electronic devices and micro electronic devices.

[0037] To address the aforementioned technical problems, embodiments of the present invention provide a micro battery array, comprising: a plurality of battery cells arranged in an array; each battery cell includes an electrode structure, an electrolyte, and a driving circuit; the electrode structure includes a first electrode and a second electrode spaced apart; the driving circuit is electrically connected to the first electrode and / or the second electrode; the electrolyte is in contact with the first electrode and the second electrode; the micro battery array further includes: a substrate; a driving circuit layer located on one side of the substrate; the driving circuit layer includes a driving circuit; a first electrode, a second electrode, and a blocking structure located on the side of the driving circuit layer opposite to the substrate; the blocking structure is located between the electrolytes of at least two adjacent battery cells, and the blocking structure and the first electrode and the second electrode of the same battery cell form a receiving space; the electrolyte is located within the receiving space.

[0038] By employing the above technical solution, a driving circuit layer is set on one side of the substrate, and the driving circuit in the driving circuit layer is electrically connected to the first electrode and / or the second electrode of the battery cell. This allows for the control of charging or discharging of the battery cell, thereby enabling the combination of different battery cells in a micro battery array, suitable for various scenarios. The driving circuit layer and electrode structure can be fabricated using processes such as deposition and sputtering, which is beneficial for the high precision and thinness of the micro battery array. By setting a barrier structure on the side of the driving circuit layer away from the substrate, and the electrolyte being located within the containment space formed by the barrier structure and the first and second electrodes of the battery cell to which the electrolyte belongs, the barrier structure can block the flow of the electrolyte, improving the sealing of the battery cell and preventing the electrolyte from flowing to adjacent battery cells. This allows for a variety of electrolyte materials to be selected, increasing the selectivity of electrolyte materials and improving the reliability and energy density of the battery cell, thereby improving the reliability and energy density of the micro battery array. In terms of fabrication process, the ODF process can be selected to prepare the electrolyte, reducing production costs.

[0039] The above is the core idea of ​​this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0040] Figure 2 This is a schematic diagram of a micro battery array provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of a battery cell provided in an embodiment of the present invention. (Reference) Figure 2 and Figure 3The micro battery array 001 includes: a plurality of battery cells 10 arranged in an array; each battery cell 10 includes an electrode structure 300, an electrolyte 330, and a driving circuit 210; the electrode structure 300 includes a first electrode 310 and a second electrode 320 spaced apart; the driving circuit 210 is electrically connected to the first electrode 310 and / or the second electrode 320; and the electrolyte 330 is in contact with the first electrode 310 and the second electrode 320.

[0041] Continue to refer to Figure 2 and Figure 3 The micro battery array 001 further includes: a substrate 100; a driving circuit layer 200 located on one side of the substrate 100; the driving circuit layer 200 includes a driving circuit 210; a first electrode 310, a second electrode 320, and a blocking structure 400 located on the side of the driving circuit layer 200 away from the substrate 100; wherein the blocking structure 400 is located at least between the electrolytes 330 of two adjacent battery cells 10, and the blocking structure 400 and the first electrode 310 and the second electrode 320 of the same battery cell 10 form a receiving space; the electrolyte 330 is located within the receiving space.

[0042] In this battery cell, one of the first electrode 310 and the second electrode 320 is the positive electrode of the battery cell 10, and the other is the negative electrode of the battery cell 10. The positive electrode materials include molybdenum dioxide (MnO2), lithium nickel cobalt manganese oxide (LiNixCoyMn1-x-yO2, NCM), lithium iron phosphate (LiFePO4, LFP), and lithium cobalt oxide (LiCoO2), etc.; the negative electrode materials include zinc (Zn), aluminum (Al), lithium aluminum alloy (LiAl), lithium indium alloy (LiIn), graphite, silicon (Si), etc.

[0043] In an optional embodiment, the electrolyte 330 may include a gel electrolyte and / or a liquid electrolyte. On the one hand, gel electrolytes and liquid electrolytes are relatively mature in development and have higher energy densities, which is beneficial to the energy density of the micro battery array 001; on the other hand, gel electrolytes and liquid electrolytes have a certain degree of fluidity, which is beneficial to the bendability of the micro battery array 001.

[0044] Among them, gel electrolytes include polyvinyl alcohol composite (PVA+ZnO4) gel electrolytes and polymer composite (PEO / PVDF+LiTFSI) gel electrolytes; liquid electrolytes include zinc sulfate (ZnSO4) electrolytes, lithium hexafluorophosphate electrolytes (LiPF6+PC+EC) and traditional organic solvent electrolytes (DMC+DEC+LiTFSI).

[0045] It should be noted that electrolyte 330 may also include solid electrolytes, such as garnet-type (LLZO / LLZTO) solid electrolytes, etc., but this embodiment of the present invention does not limit it.

[0046] For example, multiple battery cells 10 may share a substrate 100 and a driving circuit layer 200, wherein the substrate 100 includes a rigid substrate or a flexible substrate. A driving circuit layer 200 is provided on one side of the substrate 100, and the driving circuit 210 in the driving circuit layer 200 can be electrically connected to the first electrode 310 and / or the second electrode 320 of the battery cell 10, and can be used to control the charging or discharging of the battery cell 10, thereby realizing the combination of different battery cells 10 in the micro battery array 001.

[0047] The driving circuit 210 includes active or passive devices such as transistors. It comprises a conductive layer, a dielectric layer between the conductive layers, and a semiconductor layer. The conductive layer includes the source / drain electrodes (211, 212) and gate electrode 213 of the transistors. The dielectric layer includes an insulating layer 215, and the semiconductor layer includes the active layer 214 of the transistors. The conductive layer, dielectric layer, and semiconductor layer can be fabricated using processes such as deposition and sputtering. An electrode structure 300 is provided on the side of the driving circuit layer 200 away from the substrate 100. The first electrode 310 and the second electrode 320 in the electrode structure 300 can also be fabricated using processes such as deposition and sputtering, for example, chemical vapor deposition (CVD) or physical vapor deposition (PVD). This facilitates control over the size and thickness of the driving circuit layer 200 and the electrode structure 300, improves fabrication accuracy, and contributes to the thinning and lightening of the micro battery array 001.

[0048] Continue to refer to Figure 3 The first electrode 310 is located on the side of the electrolyte 330 closer to the substrate 100, and the second electrode 320 can be located on the side of the electrolyte 330 away from the substrate 100. The first electrode 310, the second electrode 320, and the barrier structure 400 can form a closed receiving space to contain the electrolyte 330. The second electrode 320 located on the side of the electrolyte 330 away from the substrate 100 can also serve to encapsulate the electrolyte 330. The barrier structure 400 located between two adjacent battery cells 10 can be arranged around the electrolyte 330 of the battery cell 10. When the electrolyte 330 includes a liquid electrolyte, it can be prepared using a one-drop-filling (ODF) process. When the electrolyte 330 includes a gel electrolyte or a solid electrolyte, it can be prepared using a coating or CVD process.

[0049] In this embodiment of the invention, by setting a driving circuit layer on one side of the substrate, and the driving circuit in the driving circuit layer being electrically connected to the first electrode and / or the second electrode of the battery cell, the charging or discharging of the battery cell can be controlled, thereby realizing the combination of different battery cells in the micro battery array, suitable for different scenarios; the driving circuit layer and electrode structure can be prepared by deposition, sputtering and other processes, which is beneficial to the high precision and thinness of the micro battery array; by setting a barrier structure on the side of the driving circuit layer away from the substrate, and the electrolyte being located in the containment space formed by the barrier structure and the first electrode and the second electrode of the battery cell to which the electrolyte belongs, the barrier structure can block the flow of electrolyte, improve the sealing of the battery cell, and prevent the electrolyte from flowing to adjacent battery cells, so that the electrolyte material can be selected in multiple ways, increasing the selectivity of the electrolyte material, which is beneficial to improving the reliability and energy density of the battery cell, and thus improving the reliability and energy density of the micro battery array. In terms of the preparation process, the electrolyte can be prepared by ODF process, reducing production costs.

[0050] It is understood that the drive circuit 210 in the battery cell 10 can be electrically connected to the first electrode 310 and the second electrode 320 at the same time, or it can be electrically connected to only one of them. This embodiment of the invention does not limit this.

[0051] Optional, Figure 4 This is a schematic diagram of another battery cell provided in an embodiment of the present invention, with reference to... Figure 4 The driving circuit 210 is electrically connected to the first electrode 310 or the second electrode 320.

[0052] For example, the driving circuit 210 is only electrically connected to the first electrode 310. The driving circuit 210 can control the charging or discharging of the battery cell 10 to which the first electrode 310 belongs by controlling the electrical connection between the first electrode 310 and the external circuit through only one transistor. The second electrodes 320 of all battery cells 10 can be connected together through the conductive layer 221. The second electrodes 320 of all battery cells 10 can be electrically connected to the external circuit through the conductive layer 221, eliminating the part of the driving circuit 210 that is electrically connected to the second electrodes 320, simplifying the structure of the driving circuit 210 and reducing production costs. The conductive layer 221 and the source and drain electrodes (211, 212) in the driving circuit 210 can be set on the same layer, saving wiring space and facilitating the thinning of the micro battery array 001.

[0053] It should be noted that, Figure 3 and Figure 4 This is merely an example illustrating the positional relationship between the first electrode 310 and the second electrode 320. The embodiments of the present invention do not specifically limit the positions of the first electrode 310 and the second electrode 320.

[0054] Optional, Figure 5 This is a schematic diagram of another battery cell provided in an embodiment of the present invention, with reference to... Figure 5 In the direction perpendicular to the plane of the substrate 100, the first electrode 310 and the second electrode 320 do not overlap.

[0055] For example, the first electrode 310 and the second electrode 320 can both be located on the side of the electrolyte 330 close to the substrate 100, and both are located on the side of the driving circuit layer 200 away from the substrate 100. In this way, the thickness of the electrode structure 300 can be reduced, thereby reducing the thickness of the battery cell 10, which is beneficial to the thinning of the micro battery array 001.

[0056] Optional, continue to refer to Figure 5 The micro battery array 001 also includes an encapsulation substrate 500 located on the side of the barrier structure 400 away from the substrate 100; the encapsulation substrate 500 covers at least the electrolyte 330 in a direction perpendicular to the plane of the substrate 100.

[0057] For example, the encapsulation substrate 500 includes a rigid material or a flexible material. When the encapsulation substrate 500 includes a rigid material, it can be a glass substrate. When the encapsulation substrate 500 includes a flexible material, it can be a flexible solid film, such as silicon oxide and / or silicon nitride thin film. The encapsulation substrate 500 can encapsulate the electrolyte 330, protecting the electrolyte 330 and the first electrode 310 and the second electrode 320. The encapsulation substrate 500 can also insulate adjacent battery cells 10 from each other, improving the reliability of the micro battery array 001.

[0058] Optional, Figure 6 This is a schematic diagram of another battery cell provided in an embodiment of the present invention, with reference to... Figure 5 and Figure 6 The barrier structure 400 includes a first barrier structure 410; the first barrier structure 410 at least surrounds the electrolyte 330 of each battery cell 10; the side surface of the first barrier structure 410 facing away from the substrate 100 is a first surface 401; the first surface 401 is flush with the side surface of the electrolyte 330 facing away from the substrate 100, or the first surface 401 is located on the side of the electrolyte 330 facing away from the substrate 100.

[0059] The first barrier structure 410 includes, but is not limited to, polymer structures such as epoxy resin.

[0060] For example, the fabrication process of the micro battery array 001 can be as follows: first, an electrode structure 300 is fabricated on the side of the driving circuit layer 200 facing away from the substrate 100; then, a first barrier structure 410 is fabricated by coating or spraying; finally, when fabricating the electrolyte 330, an ODF process can be used to drop liquid electrolyte 330 into the accommodating space formed by the first barrier structure 410 and the first electrode 310 and the second electrode 320 of the same battery cell 10. By setting the first barrier structure 410, the electrolyte 330 in the battery cell 10 can be a liquid electrolyte, such as a commercially available and well-developed organic electrolyte or aqueous electrolyte, which results in higher ion mobility for the electrolyte 330 and higher output power for the battery cell 10, thus improving the performance of the micro battery array 001.

[0061] When the first surface 401 is flush with the side of the electrolyte 330 facing away from the substrate 100, the first blocking structure 410, together with the first electrode 310 and the second electrode 320 of the same battery cell 10, can accommodate all the electrolyte 330 in the battery cell 10, preventing the electrolyte 330 from flowing to adjacent battery cells 10 and improving the reliability of the battery cell 10. When the first surface 401 is located on the side of the electrolyte 330 facing away from the substrate 100, after the electrolyte 330 is prepared, there is a certain cavity in the accommodating space formed by the first blocking structure 410 and the first electrode 310 and the second electrode 320 of the same battery cell 10, which facilitates bending and helps to increase the bendability of the micro battery array 001.

[0062] Optional, continue to refer to Figure 5 and Figure 6 The first blocking structure 410 also surrounds the electrode structure 300 of each battery cell 10.

[0063] For example, the fabrication process of the micro battery array 001 can also involve fabricating a first barrier structure 410 before fabricating the electrode structure 300. The first barrier structure 410 is located on the side of the driving circuit layer 200 away from the substrate 100, such that the first barrier structure 410 surrounds the electrode structure 300 of each battery cell 10. In this way, the fabrication area of ​​the battery cell 10 can be predefined through the first barrier structure 410, and then the electrode structure 300 can be fabricated within this fabrication area, thereby improving the fabrication accuracy of the battery cell 10 in the micro battery array 001 and improving production efficiency.

[0064] Optional, Figure 7 This is a schematic diagram of another battery cell provided in an embodiment of the present invention, with reference to... Figure 7The barrier structure 400 also includes a second barrier structure 420; the second barrier structure 420 is located at least between the electrode structures 300 of two adjacent battery cells 10; the side surface of the second barrier structure 420 facing away from the substrate 100 is a second surface 402; the second surface 402 is flush with the side surface of the electrode structure 300 facing away from the substrate 100, or the second surface 402 is located on the side of the electrode structure 300 facing away from the substrate 100.

[0065] The second organic structure 420 includes, but is not limited to, organic structures such as resins.

[0066] For example, before fabricating the electrode structure 300, a second barrier structure 420 can be fabricated on the side of the driving circuit layer 200 away from the substrate 100 using photolithography. Compared with the first barrier structure 410, the second barrier structure 420 has higher fabrication precision. The first barrier structure 410 also has higher precision in defining the fabrication area of ​​the battery cell 10, which can further improve the fabrication precision of the battery cell 10 in the micro battery array 001 and improve production efficiency. The second barrier structure 420 can also prevent the electrode paste from flowing out during the fabrication of the electrode structure 300, thus preventing the electrode paste from flowing out of the fabrication area of ​​the battery cell 10 and improving the quality and reliability of the micro battery array 001.

[0067] Optional, Figure 8 This is a schematic diagram of another battery cell provided in an embodiment of the present invention, with reference to... Figure 7 and Figure 8 At least part of the second blocking structure 420 is located on the side of the first blocking structure 410 that is closer to the electrode structure.

[0068] For example, the second blocking structure 420 can be located entirely on the side of the first blocking structure 410 closest to the electrode structure 300, such as... Figure 6 As shown; or as shown Figure 7 As shown, a portion of the second blocking structure 420 is located on the side of the first blocking structure 410 closer to the electrode structure, and a portion of the second blocking structure 420 is located on the side of the first blocking structure 410 closer to the substrate 100. This not only prevents the electrode slurry from flowing out during the fabrication of the electrode structure 300, thus avoiding leakage from the fabrication area of ​​the battery cell 10, but also prevents a gap between the first blocking structure 410 and the second blocking structure 420 during actual production, effectively preventing moisture in the liquid electrolyte 330 from corroding the drive circuit 210.

[0069] Optional, continue to refer to Figure 8The blocking structure 400 also includes a third blocking structure 430; the third blocking structure 430 is located between the first electrode 310 and the second electrode 320 in the same battery cell 10; the side surface of the third blocking structure 430 facing away from the substrate 100 is a third surface 403; the third surface 403 is flush with the side surface of the electrode structure 300 facing away from the substrate 100, or the third surface 403 is located on the side of the electrode structure 300 facing away from the substrate 100.

[0070] For example, the third barrier structure 430 can be made of the same material as the second barrier structure 420 and fabricated using the same process. The first electrode 310 and the second electrode 320 are fabricated after the second barrier structure 420 and the third barrier structure 430 are fabricated. The first electrode 310 and the second electrode 320 can use conventional commercial electrode materials and are fabricated using ODF or screen printing processes. The third barrier structure 430 is located between the first electrode 310 and the second electrode 320, which can prevent accidental contact and miscommunication between the first electrode 310 and the second electrode 320, improving the quality and reliability of the micro battery array 001. It can also increase the range of materials that can be selected for the electrode structure 300, which is beneficial for the micro battery array 001 to achieve higher energy density and energy conversion efficiency.

[0071] Optional, Figure 9 This is a schematic diagram of an electrode structure provided in an embodiment of the present invention, with reference to... Figure 9 The first electrode 310 includes a first annular electrode; the second electrode 320 includes a second annular electrode; the first annular electrode and the second annular electrode are nested in a ring. This increases the contact area between the first electrode 310 and the electrolyte 330 and the contact area between the second electrode 320 and the electrolyte 330, thereby improving the energy conversion rate.

[0072] Optional, Figure 10 This is a schematic diagram of another electrode structure provided in an embodiment of the present invention, with reference to... Figure 10 The first electrode 310 includes a first comb-shaped electrode; the second electrode 320 includes a second comb-shaped electrode; the first and second comb-shaped electrodes are interleaved and nested. Compared with the above embodiment, the contact area between the first electrode 310 and the electrolyte 330 and the second electrode 320 and the electrolyte 330 can be further increased, thereby improving the energy conversion efficiency.

[0073] It is understood that the first electrode 310 and the second electrode 320 may also have other structures, and the embodiments of the present invention do not limit this.

[0074] Optional, Figure 11 This is a schematic diagram of another battery cell provided in an embodiment of the present invention, with reference to... Figure 11The battery cell 10 also includes a current collector structure 600; the current collector structure 600 includes a first current collector 610 electrically connected to the first electrode 310 and / or a second current collector 620 electrically connected to the second electrode 320; the current collector structure 600 is located between the electrode structure 300 and the driving circuit 210; the driving circuit 210 is electrically connected to the first electrode 310 and / or the second electrode 320 through the current collector structure 600.

[0075] The first current collector 610 has a higher conductivity than the first electrode 310, and the second current collector 620 has a higher conductivity than the second electrode 320. Both the first current collector 610 and the second current collector 620 have high conductivity, which is beneficial for charge transport, improving the battery's specific capacity and rate performance. They also have high stability, high tensile strength and flexibility, and are inexpensive.

[0076] Optional, Figure 12 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention, with reference to... Figure 12 The micro battery array 001 further includes: a control circuit 20 and a charging / discharging circuit 30; the charging / discharging circuit 30 is electrically connected to the first terminal 201 of each driving circuit 210; the second terminal 202 of the driving circuit 210 is electrically connected to the first electrode 310 and / or the second electrode 320; the control circuit 20 is electrically connected to the control terminal 203 of each driving circuit 210; the control circuit 20 is used to control the driving circuit 210 to conduct or disconnect the connection path between the charging / discharging circuit 30 and the first electrode 310 and / or the second electrode 320.

[0077] For example, the charging / discharging circuit 30 includes a charging port and a discharging port. The charging port can be plugged into and electrically connected to an external power source, which can charge the battery cells 10 in the micro battery array 001 through the charging / discharging circuit 30. The discharging port can be electrically connected to an electrical load, and the battery cells 10 in the micro battery array 001 can supply power to the electrical load through the charging / discharging circuit 30. In an optional embodiment, the charging port can be reused as a discharging port.

[0078] The control circuit 20 is electrically connected to the control terminals of the drive circuits 210 in all battery cells 10. When the micro battery array 001 supplies power to the electrical load, the control circuit 20 controls the number of battery cells 10 electrically connected to the charging / discharging circuit 30 by controlling the on / off state between the first terminal 201 and the second terminal 202 of the drive circuit 210. In other words, the control circuit 20 can control the number of battery cells 10 used to supply power to the electrical load. Thus, the control circuit 20 can control different numbers of battery cells 10 to supply power to the electrical load according to different power requirements, controlling the output voltage and output current, thereby improving the functionality and adaptability of the micro battery array 001.

[0079] Optional, Figure 13 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention, with reference to... Figure 13 In any two adjacent battery cells 10 located in the same row, the second electrode 320 of the previous battery cell 10 is electrically connected to the first electrode 310 of the next battery cell 10; and / or, the first electrodes 310 of each battery cell 10 located in the same column are electrically connected to each other, and the second electrodes 320 of each battery cell 10 located in the same column are electrically connected to each other.

[0080] For example, battery cells 10 in the same row are connected in series, and battery cells 10 in the same column are connected in parallel. The control circuit 20 includes a first control circuit 21 and a second control circuit 22. The first control circuit 21 can be electrically connected to the control terminals 203 of the drive circuits 210 of multiple rows of battery cells 10 via multiple first control lines 51, and the control terminals 203 of the drive circuits 210 of at least some battery cells 10 in the same row are electrically connected to the same first control line 51. The second control circuit 22 can be electrically connected to the control terminals 203 of the drive circuits 210 of multiple columns of battery cells 10 via multiple second control lines 52, and the control terminals 203 of the drive circuits 210 of at least some battery cells 10 in the same column are electrically connected to the same second control line 52. The first control circuit 21 and the second control circuit 22 cooperate to control the drive circuits 210 of one or more battery cells 10, connecting or disconnecting the connection path between the battery cells 10 and the charging / discharging circuit 30, thereby realizing the series / parallel connection of different battery cells 10.

[0081] It should be noted that the figure only shows the positions of the first control circuit 21 and the second control circuit 22 by way of example. The first control circuit 21 and the second control circuit 22 may also be located on opposite sides or on the same side. The embodiments of the present invention do not limit the positions of the first control circuit 21 and the second control circuit 22.

[0082] Optional, Figure 14 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention, with reference to... Figure 14 When the first electrode 310 is electrically connected to the charging and discharging circuit 30 through the driving circuit 210, the driving circuit 210 includes a first transistor M1; the gate 13 of the first transistor M1 is electrically connected to the control circuit 20, the first electrode 11 of the first transistor M1 is electrically connected to the charging and discharging circuit 30, and the second electrode 12 of the first transistor M1 is electrically connected to the first electrode 310; when the second electrode 320 is electrically connected to the charging and discharging circuit 30 through the driving circuit 210, the driving circuit 210 includes a second transistor M2; the gate 23 of the second transistor M2 is electrically connected to the control circuit 20, the first electrode 21 of the second transistor M2 is electrically connected to the charging and discharging circuit 30, and the second electrode 22 of the second transistor M2 is electrically connected to the second electrode 320.

[0083] For example, the first control circuit 21 of the control circuit 20 can control the first transistor M1 to turn on or off the connection between the charging / discharging circuit 30 and the first electrode 310, and the second control circuit 22 of the control circuit 20 can control the second transistor M2 to turn on or off the connection between the charging / discharging circuit 30 and the first electrode 310. The figures are illustrated only with the example that both the first transistor M1 and the second transistor M2 are NMOS transistors; this embodiment of the invention does not impose specific limitations on this.

[0084] In an alternative embodiment, reference is made to... Figure 4 and Figure 14 The drive circuit 210 may include only one transistor, such as only the first transistor M1 or only the second transistor M2. It can also turn on or off the connection between the battery cell 10 and the charging and discharging circuit 30, which can simplify the drive circuit 210 and reduce production costs.

[0085] In another alternative embodiment, refer to Figure 13 and Figure 14 The control circuit 20 includes a first control circuit 21 and a second control circuit 22; the drive circuit 210 includes a first transistor M1 and a second transistor M2; the first control circuit 21 includes multiple first control lines 51, and the first control circuit 21 is electrically connected to the gate 13 of the first transistor M1 in the battery cell 10 in the same row through a first control line 51; the second control circuit 22 includes multiple second control lines 52, and the second control circuit 22 is electrically connected to the gate 23 of the second transistor M2 in the battery cell 10 in the same column through a second control line 52. Battery cells 10 in the same row can share a first control line 51, and battery cells 10 in the same column can share a second control line 52, reducing the number of control lines, saving space in the drive circuit layer 200, and facilitating the thinning and lightening of the micro battery array 001.

[0086] Optional, Figure 15 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention, with reference to... Figure 15 The micro battery array 001 also includes at least one signal processing circuit 40; the signal processing circuit 40 is electrically connected to the first terminal 201 of each drive circuit 210; the signal processing circuit 40 is used to obtain the charge / discharge status information of each battery cell 10 through each drive circuit 210.

[0087] For example, the battery cell 10 may experience poor contact between the first electrode 310 and / or the second electrode 320, causing the connection between the battery cell 10 and the charging / discharging circuit 30 to be broken, and the battery cell 10 will be unable to output current normally. Alternatively, the first electrode 310 and the second electrode 320 of the battery cell 10 may have an abnormal connection, causing an internal short circuit, and the output voltage of the battery cell 10 will be lower than the normal operating voltage. The signal processing circuit 40, through its electrical connection to the first terminal 201 of the drive circuit 210, can acquire information such as the output current, output voltage, input current, and input voltage of the battery cell 10, thereby detecting whether the charging / discharging state of the battery cell 10 is abnormal. By timely detecting abnormal battery cells 10, continued use of abnormal battery cells 10 can be avoided, protecting the micro battery array 001 and the electrical load from damage.

[0088] It is understood that the signal processing circuit 40 can obtain the current or voltage information of the battery cell 10 through the first electrode 310 or through the second electrode 320. This embodiment of the invention does not limit this.

[0089] Optional, continue to refer to Figure 15 The signal processing circuit 40 is also electrically connected to the control circuit 20; the signal processing circuit 40 is also used to control the drive circuit 210 of each battery cell 10 to be turned on or off through the control circuit 20 according to the charging / discharging status information of each battery cell 10.

[0090] For example, the signal processing circuit 40 can acquire information such as the output current, output voltage, input current, and input voltage of the battery cells 10, detect whether the charging / discharging state of each battery cell 10 is abnormal, and input the detection results to the control circuit 20. The control circuit 20 can control the driving circuit 210 of each battery cell 10 to be turned on or off according to the received detection results. When one or more battery cells are abnormal, the control circuit 20 can control the driving circuit 210 of the corresponding battery cell 10 to be turned off, thereby disconnecting the connection between the battery cell 10 and the charging / discharging circuit 30 and shielding the abnormal battery cell 10. When the battery cell is not abnormal, the control circuit 20 can control the driving circuit 210 of the corresponding battery cell 10 to be turned on, thereby connecting the battery cell 10 and the charging / discharging circuit 30, so that the normal battery cell 10 can be charged / discharged. In this way, by disconnecting the connection between the abnormal battery cell 10 and the charging / discharging circuit 30, the abnormal battery cell 10 is shielded, while not affecting the operation of other normal battery cells 10, thus improving the service life of the micro battery array 001.

[0091] Optional, Figure 16 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention, with reference to... Figure 16 The signal processing circuit 40 is electrically connected between the drive circuit 210 and the charge / discharge circuit 30. The signal processing circuit 40 is also used to control the drive circuit 210 and the charge / discharge circuit 30 of each battery cell 10 to be turned on or off according to the charge / discharge status information of each battery cell 10.

[0092] For example, the signal processing circuit 40 can detect whether the charging / discharging state of each battery cell 10 is abnormal. When a battery cell 10 is abnormal, the signal processing circuit 40 can directly interrupt the connection between the first terminal 201 of the driving circuit 210 of the abnormal battery cell 10 and the charging / discharging circuit 30, thus shielding the abnormal battery cell 10. When the battery cell 10 is not abnormal, the signal processing circuit 40 can connect the first terminal 201 of the driving circuit 210 of the battery cell 10 to the charging / discharging circuit 30, allowing the normal battery cell 10 to charge / discharge. In this way, the connection path between the abnormal battery cell 10 and the charging / discharging circuit 30 can be disconnected, shielding the abnormal battery cell 10, while not affecting the operation of other normal battery cells 10, thereby improving the service life of the micro battery array 001.

[0093] It is understood that the signal processing circuit 40 can control the connection path between the first electrode and / or the second electrode of each battery cell 10 and the charging / discharging circuit 30 according to the charging / discharging state information of each battery cell 10.

[0094] Optional, Figure 17 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention, with reference to... Figure 17 The signal processing circuit 40 includes a comparison module 41 and a switch module 42. The first input terminal of the comparison module 41 is electrically connected to the reference power supply, the second input terminal of the comparison module 41 is electrically connected to the first terminal of the drive circuit 210, and the output terminal of the comparison module 41 is electrically connected to the control terminal of the switch module 42. The first terminal of the switch module 42 is electrically connected to the charging and discharging circuit 30, and the second terminal of the switch module 42 is electrically connected to the first terminal 201 of the drive circuit 210. The comparison module 41 is used to control the switch module 42 to be turned on or off based on the comparison result between the reference signal of the reference power supply and the electrical signal of the first terminal 201 of the drive circuit 210.

[0095] For example, the comparison module 41 may include a multi-stage comparator, and the switching module 42 may include, but is not limited to, transistors. When each battery cell 10 in the micro battery array 001 is charging, the comparison module 41 can compare the reference power supply with the input current of the battery cell 10 to determine whether the input current of the battery cell 10 is too large or too small, thereby determining whether the battery cell 10 has a short circuit or open circuit fault. When each battery cell 10 in the micro battery array 001 is discharging, the comparison module 41 can compare the reference power supply with the output voltage of the battery cell 10 to determine whether the output voltage of the battery cell 10 is too large or too small, thereby detecting whether the battery cell 10 is leaking or has failed. The comparison module 41 can output the detection result to the switching module 42. The switching module 42 can disconnect the connection between the charging / discharging circuit 30 and the first terminal 201 of the drive circuit 210 when the battery cell 10 is abnormal, and connect the connection between the charging / discharging circuit 30 and the first terminal 201 of the drive circuit 210 when the battery cell 10 is not abnormal. Thus, the signal processing circuit 40 can detect and shield abnormal battery cells 10, and the shielding of abnormal battery cells 10 is not affected by the connection wiring between the control circuit 20 and the battery cells 10.

[0096] Optional, Figure 18 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention. Figure 19 This is a schematic diagram of another micro battery array provided in an embodiment of the present invention. (Reference) Figure 14 and Figure 18 When the driving circuit 210 is electrically connected to the first electrode 310, the driving circuit 210 includes a first transistor M1; the gate 13 of the first transistor M1 is electrically connected to the control circuit 20, the first electrode 11 of the first transistor M1 is electrically connected to the charging and discharging circuit 30, and the second electrode 12 of the first transistor M1 is electrically connected to the first electrode 310; the micro battery array 001 also includes multiple first control lines 51 and multiple first transmission lines 61; each first transmission line 61 is correspondingly set to each signal processing circuit 40; the control circuit 20 includes a first control circuit 21; the first control circuit 21 is electrically connected to each first control line 51; the first control line 51 is electrically connected to the gate 13 of the first transistor M1 of at least some of the battery cells 10 located in the same row; the second input terminal of the comparison module 41 and the second terminal of the switch module 42 are both electrically connected to the first electrode 11 of the first transistor M1 of at least some of the battery cells 10 located in the same column through the same first transmission line 61; and / or,

[0097] refer to Figure 14 and Figure 19When the second electrode 320 is electrically connected to the charging / discharging circuit 30 through the driving circuit 210, the driving circuit 210 includes a second transistor M2; the gate 23 of the second transistor M2 is electrically connected to the control circuit 20, the first electrode 21 of the second transistor M2 is electrically connected to the charging / discharging circuit 30, and the second electrode 22 of the second transistor M2 is electrically connected to the second electrode 320; the micro battery array 001 also includes multiple second control lines 52 and multiple second transmission lines 62; each second transmission line 62 is configured in a one-to-one correspondence with each signal processing circuit 40; the control circuit 20 includes a second control circuit 22; the second control circuit 22 is electrically connected to each second control line 52; the second control line 52 is electrically connected to the gate 23 of the second transistor M2 of at least a portion of the battery cells 10 located in the same column; the second input terminal of the comparison module 41 and the second terminal of the switch module 42 are both electrically connected to the first electrode 21 of the second transistor M2 of at least a portion of the battery cells 19 located in the same row through the same second transmission line 62.

[0098] For example, refer to Figure 13 , Figure 14 and Figure 18 The gate 13 of the first transistor M1 of the battery cells 10 in the same row is electrically connected to the first control circuit 21 through the same first control line 51. That is, the first control circuit 21 can control the first transistor M1 of any row or multiple rows of battery cells 10 to conduct, thus establishing the connection path between the first electrode 310 and the charging / discharging circuit 30. The first electrode 11 of the first transistor M1 of the battery cells 10 in the same column is electrically connected to a comparison module 41 and a switch module 42 in the signal processing circuit 40 through the same first transmission line 61. That is, the signal processing circuit 40 can detect whether one or more columns of battery cells 10 are abnormal. It is understood that the signal processing circuit 40 can also be electrically connected to the second transistor M2 of the battery cells 10 in the same column through a first transmission line 61, or directly to the second electrode 320 of the battery cells 10 in the same column through a first transmission line 61. This embodiment of the invention does not limit this.

[0099] Similarly, refer to Figure 13 , Figure 14 and Figure 19The gate 23 of the second transistor M2 of the battery cells 10 in the same column can be electrically connected to the second control circuit 22 through the same second control line 52. That is, the second control circuit 22 can control the second transistor M2 of any one or more columns of battery cells 10 to conduct, thus establishing the connection path between the second electrode 320 and the charging / discharging circuit 30. The first electrode 21 of the second transistor M1 of the battery cells 10 in the same row can be electrically connected to a comparison module 41 and a switch module 42 in the signal processing circuit 40 through the same second transmission line 62. That is, the signal processing circuit 40 can detect whether one or more rows of battery cells 10 are abnormal. It is understood that the signal processing circuit 40 can also be electrically connected to the first transistor M1 of the battery cells 10 in the same row through a second transmission line 62, or directly to the first electrode 310 of the battery cells 10 in the same row through a second transmission line 62. This embodiment of the invention does not limit this.

[0100] In this embodiment of the invention, the control circuit is electrically connected to the gate of the first transistor of at least some battery cells located in the same row via a first control line, and the signal processing circuit is electrically connected to the first electrode of the first transistor of at least some battery power sources located in the same column via a first transmission line; and / or, the control circuit is electrically connected to the gate of the second transistor of at least some battery cells located in the same column via a second control line, and the signal processing circuit is electrically connected to the first electrode of the first transistor of at least some battery power sources located in the same row via a second transmission line; on the one hand, this can reduce the number of traces, save space, and facilitate the thinning of micro battery arrays; on the other hand, it can also detect abnormal columns of battery cells in the same row and / or abnormal rows of battery cells in the same column.

[0101] Based on the same inventive concept, embodiments of the present invention also provide an electronic device. Figure 20 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention, such as... Figure 20 As shown, the electronic device 002 includes a micro battery array 001 provided in any embodiment of the present invention. The electronic device provided in the embodiments of the present invention can be... Figure 20 The mobile phone shown can also be any electronic product with electrical signal storage, including but not limited to the following categories: smart bracelets, portable computers, power banks, remote controls, rechargeable smart furniture, smart glasses, etc. The embodiments of the present invention do not make any special limitations on this.

[0102] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A micro battery array, characterized in that, include: Multiple battery cells arranged in an array; each battery cell includes an electrode structure, an electrolyte, and a driving circuit. The electrode structure includes a first electrode and a second electrode arranged at intervals. The driving circuit is electrically connected to the first electrode and / or the second electrode; The electrolyte is in contact with the first electrode and the second electrode; The micro battery array also includes: Substrate; A driving circuit layer located on one side of the substrate; the driving circuit layer includes the driving circuit. The first electrode, the second electrode, and the blocking structure are located on the side of the driving circuit layer opposite to the substrate; the blocking structure is located between the electrolytes of at least two adjacent battery cells, and the blocking structure, together with the first electrode and the second electrode of the same battery cell, forms a receiving space; the electrolyte is located within the receiving space; The blocking structure includes a third blocking structure; the third blocking structure is located between the first electrode and the second electrode of the same battery cell; The third blocking structure has a surface facing away from the substrate as a third surface; the third surface is flush with the surface facing away from the substrate of the electrode structure, or the third surface is located on the side of the electrode structure facing away from the substrate.

2. The micro battery array according to claim 1, wherein the first electrode and the second electrode do not overlap in a direction perpendicular to the plane of the substrate.

3. The micro battery array according to claim 2, characterized in that, Also includes: The packaging substrate located on the side of the barrier structure opposite to the substrate. In a direction perpendicular to the plane of the substrate, the encapsulation substrate at least covers the electrolyte.

4. The micro battery array according to claim 1, characterized in that, The electrolyte includes gel electrolytes and / or liquid electrolytes.

5. The micro battery array according to claim 1, characterized in that, The blocking structure further includes a first blocking structure; The first barrier structure at least surrounds the electrolyte of each of the battery cells; The surface of the first barrier structure facing away from the substrate is the first surface; the first surface is flush with the surface of the electrolyte facing away from the substrate, or the first surface is located on the side of the electrolyte facing away from the substrate.

6. The micro battery array according to claim 5, wherein the first blocking structure further surrounds the electrode structure of each of the battery cells.

7. The micro battery array according to claim 5, wherein the blocking structure further comprises a second blocking structure; the second blocking structure is located at least between the electrode structures of two adjacent battery cells; The side surface of the second blocking structure that is away from the substrate is the second surface; the second surface is flush with the side surface of the electrode structure that is away from the substrate, or the second surface is located on the side of the electrode structure that is away from the substrate.

8. The micro battery array according to claim 7, wherein at least a portion of the second blocking structure is located on the side of the first blocking structure closer to the electrode structure.

9. The micro battery array according to claim 1, characterized in that, The first electrode includes a first comb-shaped electrode; the second electrode includes a second comb-shaped electrode; The first comb-shaped electrode and the second comb-shaped electrode are interlocked.

10. The micro battery array according to claim 1, characterized in that, The first electrode includes a first annular electrode; the second electrode includes a second annular electrode; The first ring electrode and the second ring electrode are nested in a ring.

11. The micro battery array according to claim 1, wherein the battery cell further comprises a current collector structure; the current collector structure comprises a first current collector electrically connected to the first electrode and / or a second current collector electrically connected to the second electrode; The current collector structure is located between the electrode structure and the driving circuit; the driving circuit is electrically connected to the first electrode and / or the second electrode through the current collector structure. in, The conductivity of the first current collector is greater than that of the first electrode, and the conductivity of the second current collector is greater than that of the second electrode.

12. The micro battery array according to claim 1, further comprising: Control circuit and charging / discharging circuit; The charging and discharging circuit is electrically connected to the first terminal of each of the driving circuits; the second terminal of the driving circuit is electrically connected to the first electrode and / or the second electrode. The control circuit is electrically connected to the control terminal of each of the drive circuits; the control circuit is used to control the drive circuit to turn on or off the connection path between the charging / discharging circuit and the first electrode and / or the second electrode.

13. The micro battery array according to claim 12, wherein when the first electrode is electrically connected to the charging and discharging circuit through the driving circuit, the driving circuit includes a first transistor; the gate of the first transistor is electrically connected to the control circuit, the first electrode of the first transistor is electrically connected to the charging and discharging circuit, and the second electrode of the first transistor is electrically connected to the first electrode; When the second electrode is electrically connected to the charging and discharging circuit through the driving circuit, the driving circuit includes a second transistor; the gate of the second transistor is electrically connected to the control circuit, the first electrode of the second transistor is electrically connected to the charging and discharging circuit, and the second electrode of the second transistor is electrically connected to the second electrode.

14. The micro battery array according to claim 12, further comprising: At least one signal processing circuit; The signal processing circuit is electrically connected to the first terminal of each of the driving circuits; The signal processing circuit is used to obtain the charge / discharge status information of each battery cell through each of the driving circuits.

15. The micro battery array according to claim 14, wherein the signal processing circuit is further electrically connected to the control circuit; the signal processing circuit is further configured to control the conduction or disconnection of the drive circuit of each battery cell through the control circuit according to the charge / discharge state information of each battery cell.

16. The micro battery array according to claim 14, wherein the signal processing circuit is electrically connected between the drive circuit and the charge / discharge circuit; the signal processing circuit is further configured to control the drive circuit of each battery cell to be connected or disconnected from the charge / discharge circuit according to the charge / discharge state information of each battery cell.

17. The micro battery array according to claim 16, wherein the signal processing circuit comprises a comparison module and a switching module; The first input terminal of the comparison module is electrically connected to the reference power supply, the second input terminal of the comparison module is electrically connected to the first terminal of the drive circuit, and the output terminal of the comparison module is electrically connected to the control terminal of the switch module; the first terminal of the switch module is electrically connected to the charging and discharging circuit, and the second terminal of the switch module is electrically connected to the first terminal of the drive circuit. The comparison module is used to control the switching module to turn on or off based on the comparison result between the reference signal of the reference power supply and the electrical signal at the first terminal of the drive circuit.

18. The micro battery array according to claim 17, characterized in that, When the driving circuit is electrically connected to the first electrode, the driving circuit includes a first transistor; the gate of the first transistor is electrically connected to the control circuit, the first electrode of the first transistor is electrically connected to the charging and discharging circuit, and the second electrode of the first transistor is electrically connected to the first electrode; the micro battery array also includes multiple first control lines and multiple first transmission lines; each first transmission line is correspondingly arranged with each of the signal processing circuits; the control circuit includes a first control circuit; the first control circuit is electrically connected to each of the first control lines; the first control lines are electrically connected to the gates of the first transistors of at least a portion of the battery cells located in the same row; the second input terminal of the comparison module and the second terminal of the switching module are both electrically connected to the first electrodes of the first transistors of at least a portion of the battery cells located in the same column via the same first transmission line; and / or, When the second electrode is electrically connected to the charging / discharging circuit through the driving circuit, the driving circuit includes a second transistor; the gate of the second transistor is electrically connected to the control circuit, the first electrode of the second transistor is electrically connected to the charging / discharging circuit, and the second electrode of the second transistor is electrically connected to the second electrode; the micro battery array also includes multiple second control lines and multiple second transmission lines; each second transmission line is configured in a one-to-one correspondence with each of the signal processing circuits; the control circuit includes a second control circuit; the second control circuit is electrically connected to each of the second control lines; the second control lines are electrically connected to the gates of the second transistors of at least a portion of the battery cells located in the same column; the second input terminal of the comparison module and the second terminal of the switching module are both electrically connected to the first electrodes of the second transistors of at least a portion of the battery cells located in the same row through the same second transmission line.

19. The micro battery array according to claim 1, characterized in that, In any two adjacent battery cells located in the same row, the second electrode of the preceding battery cell is electrically connected to the first electrode of the following battery cell; and / or, The first electrodes of each of the battery cells located in the same column are electrically connected to each other, and the second electrodes of each of the battery cells located in the same column are electrically connected to each other.

20. An electronic device, characterized in that, include: The micro battery array according to any one of claims 1-19.

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