A battery
Patent Information
- Application Number
- CN202522038815.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-22
AI Technical Summary
可以解决现有技术中电池难以适应复杂的设备结构和多变的使用环境的问题，所述技术方案如下：
[0030]电池采用柔性芯体和柔性壳体，柔性芯体采用柔性正极层、柔性电解质层和柔性负极层，从而使电池可以实现拉伸或弯折等柔性变形，实现电池灵活地调整形状以更好地贴合和利用空间，以适应复杂的设备结构和多变的使用环境，满足不同应用场景对电池形状的特殊需求。而且，缓冲部位于第一容纳腔内，且缓冲部包裹柔性芯体设置，电池在柔性变形过程中，缓冲部可以缓冲柔性芯体与柔性壳体之间的应力，减小电池在变形区域的应力集中，避免柔性芯体或柔性壳体发生结构破坏，提高了电池的可靠性。
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Figure CN224789752U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery. Background Technology
[0002] With the rapid development of energy technology, batteries have been widely used in electronic devices, electric vehicles, wearable battery products and other fields.
[0003] Existing batteries generally include a core and a casing; the casing has a first receiving cavity, and the core is located inside the first receiving cavity.
[0004] However, batteries are typically cylindrical or square in shape, which makes them difficult to adapt to complex device structures and varied usage environments, thus limiting the design freedom of devices and the application scenarios of batteries. Utility Model Content
[0005] This application provides a battery. It solves the problem that existing batteries are difficult to adapt to complex device structures and changing usage environments. The technical solution is as follows:
[0006] On the one hand, a battery is provided, including: a flexible core, a flexible shell, and a buffer portion;
[0007] The flexible shell has a first receiving cavity inside;
[0008] The flexible core is located within the first receiving cavity; the flexible core includes: at least one flexible positive electrode layer, at least one flexible electrolyte layer, and at least one flexible negative electrode layer; the flexible positive electrode layer, the flexible electrolyte layer, and the flexible negative electrode layer are stacked.
[0009] The buffer portion is located within the first receiving cavity and is configured to enclose the flexible core.
[0010] In some possible implementations, the flexible positive electrode layer, the flexible electrolyte layer, and the flexible negative electrode layer are stacked along a first direction;
[0011] The buffer section includes two first buffer layers; the two first buffer layers respectively wrap around the flexible core on both sides in the first direction.
[0012] In some possible implementations, the buffer section further includes: two second buffer layers; the two second buffer layers respectively wrap around both sides of the flexible core in the second direction;
[0013] The second direction intersects with the first direction.
[0014] In some possible implementations, the buffer section further includes: two third buffer layers; the two third buffer layers respectively wrap around the flexible core on both sides in a third direction;
[0015] The first direction, the second direction, and the third direction intersect each other in pairs.
[0016] In some possible implementations, the first buffer layer is connected to the second buffer layer on one side in the second direction and the second buffer layer on one side in the first direction, and the outer edge of the third buffer layer is connected to the first buffer layer and the second buffer layer on the same side in the third direction, so that the buffer portion forms a second receiving cavity;
[0017] The flexible core is located within the second receiving cavity.
[0018] In some possible implementations, one of the two third buffer layers has an opening communicating with the second receiving cavity;
[0019] The flexible core can be inserted into the second receiving cavity through the opening.
[0020] In some possible implementations, the battery further includes: a radially telescopic elastic ring; the radially telescopic elastic ring is connected to the third buffer layer at the opening;
[0021] The radially telescopic elastic ring is configured such that, after the flexible core is inserted into the second receiving cavity through the opening, the third buffer layer is stretched at the opening to reduce the area of the opening.
[0022] In some possible implementations, the battery further includes: a positive terminal and a negative terminal; the positive terminal is connected to the flexible positive electrode layer, and the negative terminal is connected to the flexible negative electrode layer;
[0023] Wherein, the end of the positive terminal away from the flexible positive electrode layer extends out of the second receiving cavity from the opening; the end of the negative terminal away from the flexible negative electrode layer extends out of the second receiving cavity from the opening.
[0024] In some possible implementations, the flexible positive electrode layer includes: a positive electrode current collector layer and a positive electrode active material layer; the positive electrode active material layer is located on the side of the positive electrode current collector layer close to the flexible electrolyte layer; the positive electrode current collector layer is a metal mesh layer or a metal fabric layer;
[0025] And / or, the flexible negative electrode layer includes: a negative electrode current collector layer and a negative electrode active material layer; the negative electrode active material layer is located on the side of the negative electrode current collector layer close to the flexible electrolyte layer; the negative electrode current collector layer is a metal mesh layer or a metal fabric layer, and the negative electrode active material layer is carbon fiber cloth.
[0026] In some possible implementations, the flexible core includes: a plurality of flexible segments arranged sequentially along a second direction, with adjacent flexible segments connected and intersecting each other;
[0027] Alternatively, the flexible core includes: a plurality of first flexible blocks and a plurality of second flexible blocks; the plurality of first flexible blocks and the plurality of second flexible blocks are arranged alternately along a second direction and alternately along a third direction; adjacent first flexible blocks and second flexible blocks in the second direction or the third direction are connected and intersected.
[0028] Alternatively, the flexible core is a flexible core stretched in a second direction and / or a third direction; wherein the flexible positive electrode layer, the flexible electrolyte layer and the flexible negative electrode layer are stacked along a first direction, and the first direction, the second direction and the third direction intersect each other in pairs.
[0029] The beneficial effects of the technical solutions provided in this application include at least the following:
[0030] The battery employs a flexible core and a flexible shell. The flexible core consists of a flexible positive electrode layer, a flexible electrolyte layer, and a flexible negative electrode layer, allowing the battery to undergo flexible deformation such as stretching or bending. This enables the battery to flexibly adjust its shape to better fit and utilize space, adapting to complex equipment structures and varying operating environments, and meeting the specific shape requirements of different application scenarios. Furthermore, a buffer section is located within the first receiving cavity and encloses the flexible core. During flexible deformation, the buffer section can buffer the stress between the flexible core and the flexible shell, reducing stress concentration in the deformation area and preventing structural damage to the flexible core or shell, thus improving battery reliability. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of a battery provided in an embodiment of this application.
[0033] Figure 2 yes Figure 1 A schematic diagram of the cross-section of the battery along the A-A' direction.
[0034] Figure 3 This is a schematic diagram of the structure of a flexible core and a buffer section in a battery provided in an embodiment of this application.
[0035] Figure 4 This is a schematic diagram of the structure of a flexible core in a battery provided in an embodiment of this application.
[0036] Figure 5 This is a schematic diagram of the structure of a buffer section in a battery provided in an embodiment of this application.
[0037] Figure 6 This is another cross-sectional schematic diagram of the flexible core provided in the embodiments of this application.
[0038] Figure 7 This is a schematic diagram of a flexible core deforming into a wave shape.
[0039] Figure 8 This is a schematic diagram of a flexible core deforming into a stepped shape.
[0040] Figure 9 This is a schematic diagram of a flexible core deformed into a stretched form.
[0041] Figure label:
[0042] 000, Battery;
[0043] 100. Flexible core; 110. Flexible positive electrode layer; 111. Positive electrode current collector layer; 112. Positive electrode active material layer; 120. Flexible electrolyte layer; 130. Flexible negative electrode layer; 131. Negative electrode current collector layer; 132. Negative electrode active material layer; 140. Positive terminal; 150. Negative terminal; 160. Flexible segment; 171. First flexible block; 172. Second flexible block;
[0044] 200. Flexible shell;
[0045] 300, Buffer section; 310, First buffer layer; 320, Second buffer layer; 330, Third buffer layer; Q2, Second receiving cavity; K, Opening; 340, Radial telescopic elastic ring;
[0046] X, first direction; Y, second direction; Z, third direction. Detailed Implementation
[0047] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0048] This application provides a battery. Figure 1This is a schematic diagram of the structure of a battery provided in an embodiment of this application. Figure 2 yes Figure 1 A schematic diagram of the cross-section of the battery along the A-A' direction. Please refer to... Figure 1 and Figure 2 The battery 000 provided in this application embodiment may include: a flexible core 100, a flexible shell 200, and a buffer portion 300.
[0049] The interior of the flexible housing 200 may have a first receiving cavity (not shown in the figure). Here, the flexible housing 200 is flexible and can be stretched or bent to change shape.
[0050] The flexible core 100 is located within the first receiving cavity. That is, the flexible shell 200 is located outside the flexible core 100 and protects it from damage. The battery 000 employs the flexible core 100 and the flexible shell 200, enabling the battery 000 to undergo flexible deformations such as stretching or bending. This allows the battery 000 to flexibly adjust its shape to better fit and utilize space, adapting to complex equipment structures and varying operating environments, and meeting the specific shape requirements of different application scenarios.
[0051] The flexible core 100 may include at least one flexible positive electrode layer 110, at least one flexible electrolyte layer 120, and at least one flexible negative electrode layer 130. The flexible positive electrode layer 110, flexible electrolyte layer 120, and flexible negative electrode layer 130 are stacked. Here, the flexible positive electrode layer 110, flexible electrolyte layer 120, and flexible negative electrode layer 130 are all flexible and can be stretched or bent to change shape, thereby enabling the flexible core 100 to be stretched or bent.
[0052] Here, a flexible electrolyte layer 120 is spaced between each adjacent flexible positive electrode layer 110 and flexible negative electrode layer 130, thereby forming a primary battery. In some embodiments, multiple sets of flexible positive electrode layer 110, flexible electrolyte layer 120 and flexible negative electrode layer 130 are alternately stacked along the stacking direction to improve the volumetric energy density of the battery 000.
[0053] The buffer portion 300 is located within the first receiving cavity and encloses the flexible core 100. That is, the buffer portion 300 is situated in the space between the flexible core 100 and the flexible shell 200. Thus, during the flexible deformation of the battery 000, the buffer portion 300 can buffer the stress between the flexible core 100 and the flexible shell 200, reducing stress concentration in the deformation area and preventing structural damage to the flexible core 100 or the flexible shell 200, thereby improving the reliability of the battery 000.
[0054] In summary, the battery employs a flexible core and a flexible shell. The flexible core consists of a flexible positive electrode layer, a flexible electrolyte layer, and a flexible negative electrode layer, allowing the battery to undergo flexible deformation such as stretching or bending. This enables the battery to flexibly adjust its shape to better fit and utilize space, meeting the specific shape requirements of different application scenarios. Furthermore, the buffer section is located within the first receiving cavity and encloses the flexible core. During flexible deformation, the buffer section can buffer the stress between the flexible core and the flexible shell, reducing stress concentration in the deformation area and preventing structural damage to the flexible core or shell, thus improving battery reliability.
[0055] In some embodiments, the buffer portion 300 can completely fill the space between the flexible core 100 and the flexible shell 200, thereby timely transmitting and buffering stress between the flexible shell 200 and the flexible core 100, which is beneficial to further improve the reliability of the battery 000.
[0056] Figure 3 This is a schematic diagram of the structure of a battery in which a flexible core 100 and a buffer portion 300 cooperate, as provided in an embodiment of this application. Figure 4 This is a schematic diagram of the structure of a flexible core 100 in a battery provided in an embodiment of this application. Please refer to... Figure 3 and Figure 4 In some possible implementations, the flexible positive electrode layer 110, the flexible electrolyte layer 120, and the flexible negative electrode layer 130 are stacked along the first direction X. The buffer portion 300 may include two first buffer layers 310. The two first buffer layers 310 respectively wrap around the two sides of the flexible core 100 in the first direction X. Thus, the two first buffer layers 310 can buffer the two sides of the battery 000 in the first direction X, reducing local stress concentration between the flexible shell 200 and the flexible core 100 on both sides in the first direction X. Here, the first direction X is typically the thickness direction of the battery 000. The two sides of the battery in the thickness direction of 000 are typically the two surfaces with the largest area. When the battery 000 is bent or stretched, the two sides of the battery 000 in the first direction X typically deform accordingly.
[0057] Continue to refer to Figure 3 and Figure 4 In some possible implementations, the buffer section 300 may further include two second buffer layers 320. The two second buffer layers 320 respectively wrap around both sides of the flexible core 100 in the second direction Y. The second direction Y intersects the first direction X. Here, the second direction Y can be the width direction of the battery 000.
[0058] In this way, the two second buffer layers 320 can buffer the two sides of the battery 000 in the second direction Y respectively, reducing the local stress concentration on both sides of the flexible shell 200 and the flexible core 100 in the second direction Y, thereby further improving the structural reliability of the battery 000 during deformation based on the first buffer layer 310.
[0059] Continue to refer to Figure 3 and Figure 4 In some possible implementations, the buffer section 300 may further include two third buffer layers 330. The two third buffer layers 330 respectively wrap around the flexible core 100 on both sides in the third direction Z. The first direction X, the second direction Y, and the third direction Z intersect each other pairwise. Here, the third direction Z can be the length direction of the battery 000.
[0060] In this way, the two third buffer layers 330 can buffer the two sides of the battery 000 in the third direction Z respectively, reducing the local stress concentration on both sides of the flexible shell 200 and the flexible core 100 in the third direction Z, thereby further improving the structural reliability of the battery 000 during deformation based on the first buffer layer 310 and the second buffer layer 320.
[0061] Figure 5 This is a schematic diagram of the structure of a buffer section 300 in a battery according to an embodiment of this application. Please refer to... Figures 3-5 In some possible implementations, the first buffer layer 310 is connected to the second buffer layer 320 on one side in the second direction Y, and the outer edge of the third buffer layer 330 is connected to the first buffer layer 310 and the second buffer layer 320 on the same side in the third direction Z, so that the buffer portion 300 surrounds the second receiving cavity Q2. The flexible core 100 is located within the second receiving cavity Q2. That is, the two first buffer layers 310, the two second buffer layers 320, and the two third buffer layers 330 are connected to form a buffer shell, which is fitted around the outer periphery of the flexible core 100. Exemplarily, the buffer shell is integrally formed on the outer periphery of the flexible core 100.
[0062] In this way, the battery 000 can be buffered at the junction of the first direction X and the second direction Y by the connection between the first buffer layer 310 and the second buffer layer 320; the battery 000 can be buffered at the junction of the first direction X and the third direction Z by the connection between the first buffer layer 310 and the third buffer layer 330; the battery 000 can be buffered at the junction of the second direction Y and the third direction Z by the connection between the second buffer layer 320 and the third buffer layer 330, thereby avoiding local stress concentration at the junction of surfaces (or edges) of the battery 000, which could lead to structural damage to the flexible core 100 or the flexible shell 200.
[0063] Continue to refer to Figures 3-5 In some possible implementations, one of the two third buffer layers 330 may have an opening K communicating with the second receiving cavity Q2. The flexible core 100 can then be inserted into the second receiving cavity Q2 through the opening K. This allows the flexible core 100 to be inserted into the buffer housing through the opening K, facilitating assembly of the flexible core 100 with the buffer portion 300. After assembly, a flexible housing 200 can be further assembled outside the buffer portion 300 to form the battery 000. In other embodiments, the opening K may also be located on the first buffer layer 310 or the second buffer layer 320.
[0064] Continue to refer to Figures 3-5 In some possible implementations, the battery 000 may further include a radially telescopic elastic ring 340. The radially telescopic elastic ring 340 is connected to the third buffer layer 330 at the opening K. The radially telescopic elastic ring 340 can extend and retract radially upwards, thereby changing the diameter of the opening K. Exemplarily, the radially telescopic elastic ring 340 may be a rubber ring.
[0065] The radially telescopic elastic ring 340 is configured such that after the flexible core 100 is inserted into the second receiving cavity Q2 through the opening K, the third buffer layer 330 is stretched at the opening K to reduce the area of the opening K. In this way, the reduced area of the opening K can constrain the flexible core 100 within the buffer shell, preventing the flexible core 100 from extending out of the second receiving cavity Q2 through the opening K, thus ensuring accurate positioning between the flexible core 100 and the buffer portion 300.
[0066] Continue to refer to Figures 3-5 In some possible implementations, the battery 000 may further include a positive terminal 140 and a negative terminal 150. The positive terminal 140 is connected to the flexible positive electrode layer 110, and the negative terminal 150 is connected to the flexible negative electrode layer 130. Here, the positive terminal 140 and the negative terminal 150 may be tabs.
[0067] In this configuration, the positive terminal 140 extends from the flexible positive electrode layer 110 through the opening K outside the second receiving cavity Q2. The negative terminal 150 extends from the flexible negative electrode layer 130 through the opening K outside the second receiving cavity Q2. In other words, the opening K can not only be used for the assembly between the flexible core 100 and the buffer portion 300, but also serve as a clearance opening for the positive terminal 140 and the negative terminal 150, facilitating their extension from inside the second receiving cavity Q2 to outside, and further extending to outside the first receiving cavity, serving as the positive and negative electrodes of the battery 000.
[0068] In some embodiments, the cushioning portion 300 may use a flexible composite sandwich structure. Exemplarily, it may be polyvinyl chloride foam doped with a foaming agent and a stabilizer. In other embodiments, the cushioning portion 300 may also be foam.
[0069] Figure 6 This is another cross-sectional schematic diagram of the flexible core 100 provided in this embodiment of the application. Please refer to... Figure 6 In some possible implementations, the flexible positive electrode layer 110 may include a positive electrode current collector layer 111 and a positive electrode active material layer 112. The positive electrode active material layer 112 is located on the side of the positive electrode current collector layer 111 near the flexible electrolyte layer 120. The positive electrode current collector layer 111 is a metal mesh layer or a metal fabric layer. The metal mesh layer or metal fabric layer has good tensile and bending properties, thereby realizing the stretchability or bendability of the flexible positive electrode layer 110. For example, the metal fabric layer can be a copper fabric layer. The metal mesh layer can be a copper mesh layer.
[0070] The positive electrode active material layer 112 can be a sodium salt structure, specifically including three types of sodium salt structures: polyanionic phosphate, layered oxide, or Prussian blue. Sodium salt structures have good sodium ion insertion / extraction capabilities, low cost, and by coating sodium salt materials onto a metal mesh layer or metal fabric layer, the flexible positive electrode layer 110 can be bent and stretched.
[0071] Please continue to refer to Figure 6 In some possible implementations, the flexible negative electrode layer 130 may include a negative electrode current collector layer 131 and a negative electrode active material layer 132. The negative electrode active material layer 132 is located on the side of the negative electrode current collector layer 131 near the flexible electrolyte layer 120. The negative electrode current collector layer 131 is a metal mesh layer or a metal fabric layer, and the negative electrode active material layer 132 is a carbon fiber cloth. The metal mesh layer or metal fabric layer has good tensile and bending properties, and the carbon fiber cloth is woven, flexible, low-cost, and not easy to fall off, thereby realizing the stretchability or bendability of the flexible negative electrode layer 130. For example, the metal fabric layer can be a copper fabric layer. The metal mesh layer can be a copper mesh layer.
[0072] In some possible implementations, the flexible core 100 can be deformed into a wave-like, stepped, or stretched shape, thereby allowing the battery 000 to be deformed into a wave-like, stepped, or stretched shape. Figure 7 This is a schematic diagram of the flexible core 100 deforming into a wave shape; Figure 8 This is a schematic diagram of the flexible core 100 deformed into a stepped shape; Figure 9This is a schematic diagram of the flexible core 100 deformed into a stretched form. The flexible positive electrode layer 110, flexible electrolyte layer 120, and flexible negative electrode layer 130 are stacked along a first direction X, and the first direction X, the second direction Y, and the third direction Z intersect each other in pairs. Here, the initial shape of the flexible core 100 can be... Figure 4 The rectangle shown typically has the following directions: the first direction X is the thickness direction of battery 000; the second direction Y is the width direction of battery 000; and the third direction Z is the length direction of battery 000.
[0073] Please refer to Figure 7 When the flexible core 100 can be deformed into a wave shape, the flexible core 100 may include a plurality of flexible segments 160 arranged sequentially along the second direction Y, with adjacent flexible segments 160 connected and intersecting. Here, the included angle between adjacent flexible segments 160 is not limited and can be any value between -180° and +180°, for example, 30°. Thus, the plurality of flexible segments 160 arranged sequentially along the second direction Y are connected and intersecting, meaning the battery 000 has a wave-like shape after bending. As the included angle between adjacent flexible segments 160 changes, the size of the battery 000 in the second direction Y will increase or decrease. The battery 000 can be bent into a wave shape, which is suitable for battery needs in wearable bracelets or sportswear.
[0074] Please refer to Figure 8 When the flexible core 100 can be deformed into a stepped shape, the flexible core 100 may include a plurality of first flexible blocks 171 and a plurality of second flexible blocks 172. The plurality of first flexible blocks 171 and the plurality of second flexible blocks 172 are arranged alternately along the second direction Y and alternately along the third direction Z. Adjacent first flexible blocks 171 and second flexible blocks 172 in the second direction Y or the third direction Z are connected and intersected. Here, the included angle between adjacent first flexible blocks 171 and second flexible blocks 172 is not limited and can be any value between -180° and +180°, for example, 90°. Thus, in a plane parallel to the second direction Y and the third direction Z, the first flexible blocks 171 and second flexible blocks 172 are sequentially connected and intersected, and the battery 000 has a stepped shape after bending. As the included angle between adjacent first flexible blocks 171 and second flexible blocks 172 changes, the size of the battery 000 in the second direction Y and / or the third direction Z will increase or decrease. Battery 000 can be bent into a stepped shape, which can be used for battery needs in footwear, clothing, or irregularly shaped sensors.
[0075] Please refer to Figure 9When the flexible core 100 can be deformed into a stretchable form, the flexible core 100 is a flexible core 100 stretched in the second direction Y and / or the third direction Z. Thus, in a plane parallel to the second direction Y and the third direction Z, the dimensions of the battery 000 in the second direction Y and / or the third direction Z can be changed by stretching, while the battery 000 still maintains a flat state. The battery 000 can be stretched into a stretchable form, which can be suitable for battery requirements in electronic skin or smart textiles.
[0076] In some embodiments, the flexible negative electrode layer 130 or the flexible positive electrode layer 110 may also contain a conductive agent. The conductive agent can further reduce the resistance within the flexible negative electrode layer 130 or the flexible positive electrode layer 110, accelerate electron transport or ion migration, and improve the charge and discharge efficiency of the battery 000. To improve the bendability or stretchability of the battery 000, the conductive agent may be a conductive polymer, which has the advantages of good flexibility and solution processability. For example, the conductive polymer may be a polyaniline-based polymer.
[0077] In some possible implementations, the flexible electrolyte layer 120 can be a polymer-based composite solid electrolyte. Polymer-based composite solid electrolytes are flexible and stretchable, thus meeting the flexibility requirements of the battery 000. Furthermore, solid electrolytes possess both ion and electron conductivity, eliminating the need to inject electrolyte into the flexible casing 200 as an ion channel, and also eliminating the need for a separator between the flexible positive electrode layer 110 and the flexible negative electrode layer 130, thus avoiding the risk of leakage from the battery 000. Compared to electrolytes, solid electrolytes can maintain stable properties over a wider temperature range, improving the temperature adaptability of the battery 000. Exemplarily, polymer-based composite solid electrolytes may include polyimide, thermoplastic polyurethane, or acrylate, etc.
[0078] In some embodiments, the flexible housing 200 may be a modified aluminum-plastic film, in which polyvinyl alcohol / carboxymethyl cellulose and a softener (phthalate plasticizer) are added to maintain adhesion and elasticity, thereby improving the bendability and stretchability of the aluminum-plastic film.
[0079] In summary, the battery employs a flexible core and a flexible shell. The flexible core consists of a flexible positive electrode layer, a flexible electrolyte layer, and a flexible negative electrode layer, allowing the battery to undergo flexible deformation such as stretching or bending. This enables the battery to flexibly adjust its shape to better fit and utilize space, meeting the specific shape requirements of different application scenarios. Furthermore, the buffer section is located within the first receiving cavity and encloses the flexible core. During flexible deformation, the buffer section can buffer the stress between the flexible core and the flexible shell, reducing stress concentration in the deformation area and preventing structural damage to the flexible core or shell, thus improving battery reliability.
[0080] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.
[0081] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A battery, characterized in that, include: Flexible core (100), flexible shell (200), and buffer (300); The flexible shell (200) has a first receiving cavity inside; The flexible core (100) is located within the first receiving cavity; the flexible core (100) includes: at least one flexible positive electrode layer (110), at least one flexible electrolyte layer (120) and at least one flexible negative electrode layer (130); the flexible positive electrode layer (110), the flexible electrolyte layer (120) and the flexible negative electrode layer (130) are stacked; The buffer section (300) is located inside the first receiving cavity, and the buffer section (300) is configured to wrap around the flexible core (100).
2. The battery according to claim 1, characterized in that, The flexible positive electrode layer (110), the flexible electrolyte layer (120), and the flexible negative electrode layer (130) are stacked along a first direction (X); The buffer section (300) includes two first buffer layers (310); the two first buffer layers (310) respectively wrap around the flexible core (100) on both sides in the first direction (X).
3. The battery according to claim 2, characterized in that, The buffer section (300) further includes: two second buffer layers (320); the two second buffer layers (320) respectively wrap around the flexible core (100) on both sides in the second direction (Y); The second direction (Y) intersects with the first direction (X).
4. The battery according to claim 3, characterized in that, The buffer section (300) further includes: two third buffer layers (330); the two third buffer layers (330) respectively wrap around the flexible core (100) on both sides in the third direction (Z); The first direction (X), the second direction (Y), and the third direction (Z) intersect each other in pairs.
5. The battery according to claim 4, characterized in that, The first buffer layer (310) is connected to the second buffer layer (320) on one side in the second direction (Y) and the second buffer layer (320) on one side in the first direction (X). The outer edge of the third buffer layer (330) is connected to the first buffer layer (310) and the second buffer layer (320) on the same side in the third direction (Z), so that the buffer part (300) forms a second receiving cavity (Q2). The flexible core (100) is located within the second receiving cavity (Q2).
6. The battery according to claim 5, characterized in that, One of the two third buffer layers (330) has an opening (K) communicating with the second receiving cavity (Q2); The flexible core (100) can be inserted into the second receiving cavity (Q2) through the opening (K).
7. The battery according to claim 6, characterized in that, The battery further includes: a radially telescopic elastic ring (340); the radially telescopic elastic ring (340) is connected to the third buffer layer (330) at the opening (K); The radially telescopic elastic ring (340) is configured to stretch the third buffer layer (330) at the opening (K) after the flexible core (100) is inserted into the second receiving cavity (Q2) through the opening (K) to reduce the area of the opening (K).
8. The battery according to claim 6, characterized in that, The battery further includes a positive terminal (140) and a negative terminal (150); the positive terminal (140) is connected to the flexible positive electrode layer (110), and the negative terminal (150) is connected to the flexible negative electrode layer (130); The positive terminal (140) extends from the opening (K) out of the second receiving cavity (Q2) at the end away from the flexible positive electrode layer (110); the negative terminal (150) extends from the opening (K) out of the second receiving cavity (Q2) at the end away from the flexible negative electrode layer (130).
9. The battery according to any one of claims 1-8, characterized in that, The flexible positive electrode layer (110) includes: a positive electrode current collector layer (111) and a positive electrode active material layer (112); the positive electrode active material layer (112) is located on the side of the positive electrode current collector layer (111) close to the flexible electrolyte layer (120); the positive electrode current collector layer (111) is a metal mesh layer or a metal fabric layer; And / or, the flexible negative electrode layer (130) includes: a negative electrode current collector layer (131) and a negative electrode active material layer (132); the negative electrode active material layer (132) is located on the side of the negative electrode current collector layer (131) close to the flexible electrolyte layer (120); the negative electrode current collector layer (131) is a metal mesh layer or a metal fabric layer, and the negative electrode active material layer (132) is a carbon fiber cloth.
10. The battery according to any one of claims 1-8, characterized in that, The flexible core (100) includes a plurality of flexible segments (160) arranged sequentially along the second direction (Y), wherein two adjacent flexible segments (160) are connected and intersected. Alternatively, the flexible core (100) includes: a plurality of first flexible blocks (171) and a plurality of second flexible blocks (172); the plurality of first flexible blocks (171) and the plurality of second flexible blocks (172) are arranged alternately along a second direction (Y) and alternately along a third direction (Z); the first flexible blocks (171) and the second flexible blocks (172) adjacent in the second direction (Y) or the third direction (Z) are connected and intersected; Alternatively, the flexible core (100) is a flexible core (100) stretched in a second direction (Y) and / or a third direction (Z); The flexible positive electrode layer (110), the flexible electrolyte layer (120), and the flexible negative electrode layer (130) are stacked along a first direction (X), and the first direction (X), the second direction (Y), and the third direction (Z) intersect each other in pairs.