Layered S-shaped connection deformable battery and manufacturing method thereof

Abstract

The invention provides a layered S-shaped connection deformable battery and a manufacturing method thereof.The deformable battery comprises at least two battery units and layered conductive connecting pieces used for connecting the adjacent battery units, and each layered conductive connecting piece comprises wires which are arranged in an S shape in the length direction and alternately stacked in the thickness direction; each layer of wire is coated with a flexible packaging shell which is also of an alternate laminated structure, and the battery units and the layered conductive connecting pieces are coated with a deformable shell in a shape-following manner. According to the invention, through hierarchical design, the hierarchical conductive connecting pieces which are arranged in a snakelike manner and are alternately stacked are constructed, and during deformation, the hierarchical conductive connecting pieces are preferentially changed into a single-layer flat and straight state from a multi-layer bending state, so that preliminary stretching is realized; and when the deformable battery is continuously deformed, the layered conductive connecting piece can be continuously stretched, so that the wire tends to a straight state from a snakelike state and can also be twisted, and the overall stretching and torsional deformation capabilities of the deformable battery are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent energy storage devices, and in particular to a hierarchical serpentine-connected deformable battery and a manufacturing method thereof. Background Art

[0002] Flexible deformable batteries are expected to become core energy storage components for wearable electronic devices and have broad application prospects in medical monitoring, individual combat equipment and other fields.

[0003] At present, most deformable batteries can only achieve bending deformation and cannot be stretched or twisted significantly. Since the active electrode material is easily damaged and detached from the current collector during the deformation process, it is difficult to maintain stable electrochemical performance during deformation, and even safety problems such as short circuits may occur. In addition, some deformable batteries have certain bending, stretching and twisting deformation capabilities through structural design. However, due to the large spatial area of ​​its inactive battery components and low utilization rate, the battery's energy density and capacity are low and its deformation capacity is still limited.

[0004] The Chinese patent application "A Flexible Battery Pack" (publication number: CN103682410A) discloses a flexible battery pack containing flexible cells, including a packaging film, an electrolyte filled in the packaging film, and at least two electrically connected cells encapsulated in the packaging film, at least one of the cells is a flexible cell. This method can reduce the stress inside the cell and improve the bending stability of the battery pack by setting a flexible cell as a flexible part, but there are great disadvantages: the battery pack cannot achieve large-scale torsion and stretching deformation, the deformation ability is weak, and the electrolyte is prone to leakage, causing damage to the battery pack.

[0005] The US patent application "Flexible battery connection structure and belt comprising the same" (publication number: US20200099033A1) discloses a flexible battery connection structure that realizes the mechanical and electrical connection of flexible battery cells to form a flexible battery pack strip. The battery has a bendable characteristic, but cannot be stretched or twisted.

[0006] The US patent application "High-energy-density deformable batteries" (publication number: US20210005852A1) discloses a method for making a deformable battery with high energy density. The battery cell has a curved stretchable connector and a winding energy storage configuration. Its main disadvantages are: during the stretching process, the battery shape cannot be automatically restored, the battery cell structure is easily irreversibly damaged, and the current collector and active layer inside the battery cell will be stratified, which in turn affects the mechanical and charge and discharge stability of the battery.

[0007] Therefore, in view of the defects of current deformable batteries, it is urgent to design a deformable battery with both high capacity and high deformability. Summary of the invention

[0008] In view of the shortcomings of the prior art mentioned above, the purpose of the present invention is to provide a hierarchical serpentine connection deformable battery, which is used to solve the problem of poor battery deformation ability in the prior art through the hierarchical structural design of the hierarchical conductive connector. At the same time, the present invention will also provide a manufacturing method for a hierarchical serpentine connection deformable battery.

[0009] In order to achieve the above-mentioned object and other related objects, the present invention provides the following technical solutions: According to a first aspect of the present invention, a layered serpentine-connected deformable battery is provided, comprising at least two battery cells and a layered conductive connector for connecting adjacent battery cells, wherein the layered conductive connector comprises conductive wires arranged in a serpentine shape in the length direction and alternately stacked in the thickness direction, each layer of conductive wires being coated with a flexible packaging shell having the same alternating stacking structure, and the battery cells and the layered conductive connectors being conformally coated with a deformable outer shell.

[0010] Furthermore, both ends of the battery unit are provided with a positive electrode tab and a negative electrode tab. Wherein, the battery unit is square or rectangular.

[0011] Furthermore, the battery cells are arranged linearly in sequence.

[0012] Furthermore, the battery cell has a battery protection board therein, which provides overcharge, over-discharge and short-circuit protection for the battery cell, thereby improving the safety of the battery cell.

[0013] In one embodiment of the present invention, adjacent battery cells are connected in series via a hierarchical conductive connector. Specifically, the hierarchical conductive connector includes a wire, the front end of which is connected to the positive electrode tab of the front battery cell, and the rear end of which is connected to the negative electrode tab of the rear battery cell; or the front end of which is connected to the negative electrode tab of the front battery cell, and the rear end of which is connected to the positive electrode tab of the rear battery cell.

[0014] In one embodiment of the present invention, adjacent battery cells are connected in parallel via a hierarchical conductive connector. Specifically, the hierarchical conductive connector includes two wires, one of which is connected to the positive electrode tabs of the front and rear battery cells respectively, and the other is connected to the negative electrode tabs of the front and rear battery cells respectively.

[0015] Furthermore, the number of stacking layers of the layered conductive connector and the wires therein in the thickness direction is an odd number, such as 3 layers, 5 layers, 7 layers, etc. Among them, the minimum number of stacking layers is 3 layers.

[0016] Further, in the same plane, the conductive wire is composed of a plurality of serpentine units, and the serpentine units include "U"-shaped, sawtooth-shaped, rectangular, wavy, etc. The number of periods of the serpentine units is determined by the degree of elongation required for the hierarchical conductive connector.

[0017] Furthermore, the shapes of the wires in different layers are consistent, so that the deformation amount and deformation state of the wires in each layer remain consistent.

[0018] Furthermore, the deformable shell and the flexible packaging shell are made of flexible materials, and the flexible materials include but are not limited to Ecoflex, silicone and the like.

[0019] A second aspect of the present invention provides a method for manufacturing a hierarchical serpentine-connected deformable battery, comprising the following steps: The first is the pre-manufacturing of hierarchical conductive connectors: (1) A winding mold for manufacturing a serpentine wire in a primary plane: the winding mold comprises a shallow groove that is recessed downward and a frame surrounding the shallow groove, the shallow groove is provided with a plurality of columns that match the serpentine period of the wire, the side walls of the columns are provided with positioning grooves that match the wire, and the frame is provided with a frame groove for the wire to pass through; (2) Arranging the wires: insert the wires from the frame grooves into the shallow grooves, and then wind them in the positioning grooves of the columns in sequence, so that the wires form a serpentine bend in the primary surface, and then pre-tighten both ends of the wires to prevent the wires from loosening; (3) Initial solid demolding: Pour the flexible material into the shallow groove of the winding mold to encapsulate the wire, and demold after curing, so that the flexible packaging shell is wrapped around the wire to manufacture a pre-packaged hierarchical conductive connector; The second is the connection of battery cells and the packaging of deformable shells: (4) Designing and assembling a detachable shell mold: the detachable shell mold comprises a base, two side baffles and a plurality of inner baffles, wherein the side baffles and the inner baffles are detachably mounted on the base, and the inner baffles have a plurality of curved surfaces, and the inner baffles are used to guide the layered conductive connector to bend outside the secondary surface (i.e., to bend in a serpentine shape along its thickness direction) to form an alternatingly stacked serpentine shape; (5) Placement of battery cells and hierarchical conductive connectors: Place several battery cells between two side baffles, bend the pre-packaged hierarchical conductive connectors in step (3) through the inner partition and place them between adjacent battery cells, weld the ends of the wires to the positive / negative electrode tabs of the corresponding battery cells, and insulate the welds to ensure that the hierarchical conductive connectors have low internal resistance, high conductivity and good corrosion resistance; (6) Secondary solid demolding: Pour flexible material into the removable shell mold to ensure that it can cover all battery cells and hierarchical conductive connectors. After the flexible material is completely solidified, remove the mold to obtain a hierarchical serpentine connection deformable battery.

[0020] Furthermore, in step (4), a slot matching the side baffle and the inner partition is provided on the base, and the side baffle and the inner partition are inserted into the slot in a vertical direction.

[0021] Furthermore, end plates are provided at both ends of the base to cooperate with baffles on both sides to form a rectangular frame.

[0022] As described above, the hierarchical serpentine connection deformable battery and the manufacturing method thereof of the present invention have the following beneficial effects: 1. The present invention constructs a hierarchical conductive connector that is arranged in a serpentine shape and alternately stacked through a hierarchical design. When deformed, the hierarchical conductive connector preferentially changes from a multi-layer bent state to a single-layer straight state to achieve initial stretching; and then when the deformation continues, the hierarchical conductive connector can continue to stretch, so that the wire tends to be straight from a serpentine state, and can also twist, thereby greatly improving the overall stretching and torsional deformation capabilities of the deformable battery.

[0023] 2. The functional decoupling design of the battery cell and the serpentine wire of the present invention reduces the stress in the battery cell, ensures the high capacity and excellent electrochemical performance of the battery cell under large deformation, can maintain the excellent deformation performance and high energy density of the deformable battery, and improve the mechanical stability of the deformable battery.

[0024] 3. The present invention can prevent a certain degree of impact damage and improve battery safety by encapsulating a deformable shell outside the battery unit and the layered conductive connector.

[0025] 4. The detachable shell mold used in the manufacturing process of the present invention is easy to disassemble and assemble, can be reused, simplifies the process flow, and the manufacturing method is simple to operate, has high production efficiency, and is easy to realize industrial production; the deformable battery of the present invention can be widely used in smart clothing, flexible electronics, medical equipment and other fields to enhance the comfort and functionality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the disassembly of the layered serpentine-connected deformable battery disclosed in Example 1 of the present invention.

[0027] Figure 2 for Figure 1 Enlarged schematic diagram of the center conductor position.

[0028] Figure 3 This is a schematic diagram of the structure of the battery unit disclosed in Example 1 of the present invention.

[0029] Figure 4 It is a schematic diagram of the structure of the wire disclosed in Example 2 of the present invention.

[0030] Figure 5 This is a schematic diagram of the disassembly of the layered serpentine-connected deformable battery disclosed in Example 3 of the present invention.

[0031] Figure 6 for Figure 5 Enlarged schematic diagram of the center conductor position.

[0032] Figure 7 This is a schematic diagram of the structure of the hierarchical serpentine-connected deformable battery disclosed in Example 4 of the present invention.

[0033] Figure 8 This is a schematic diagram of the structure of the winding mold disclosed in Example 4 of the present invention.

[0034] Fig. 9 This is a schematic diagram of the structure of the winding mold disclosed in Example 5 of the present invention.

[0035] Fig.10a It is a schematic diagram of the structure of the detachable shell mold disclosed in Example 4 or 5 of the present invention.

[0036] Fig.10b It is a schematic diagram of the structure of the inner partition disclosed in Example 4 or 5 of the present invention.

[0037] Fig.10c It is a schematic diagram of the structure of the base disclosed in Example 4 or 5 of the present invention.

[0038] Fig.10d It is a schematic diagram of the structure of the side baffle disclosed in Example 4 or 5 of the present invention.

[0039] Fig.11 This is a schematic diagram of the structure of the hierarchical serpentine-connected deformable battery disclosed in Example 6 of the present invention.

[0040] Fig.12 This is a schematic diagram of the disassembly of the layered serpentine-connected deformable battery disclosed in Example 6 of the present invention.

[0041] Fig.13 for Fig.12 Enlarged schematic diagram of the center conductor position.

[0042] Fig.14 This is a schematic diagram of the structure of the inner partition disclosed in Example 6 of the present invention.

[0043] Component number description 100, battery cell; 101, positive electrode tab; 102, negative electrode tab; 200, layered conductive connector; 201, wire; 300, deformable shell; 301, external circuit interface; 400, winding mold; 401, shallow groove; 402, frame; 403, column; 404, positioning groove; 405, frame groove; 500, detachable shell mold; 501, base; 502, side baffle; 503, inner partition; 504, end plate; 505, slot; 506, protrusion. DETAILED DESCRIPTION

[0044] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0045] Example 1 refer to Figure 1 This embodiment provides a hierarchical serpentine connection deformable battery, comprising four linearly arranged battery cells 100, three hierarchical conductive connectors 200 for connecting two adjacent battery cells 100, and a deformable shell 300. The deformable shell 300 is also provided with an external circuit interface 301 for connecting the battery cells, and the external circuit interface 301 is used to connect with other electronic devices.

[0046] In this embodiment, adjacent battery cells 100 are connected in parallel via a layered conductive connector 200. Figure 2 Each hierarchical conductive connector 200 includes two wires 201 and a flexible packaging shell covering the two wires 201. The hierarchical conductive connector 200 has a three-layer alternating laminated structure, that is, each wire 201 has a three-layer structure alternately laminated in the thickness direction (i.e., outside the secondary surface), and the flexible packaging shell has a three-layer alternating laminated structure covering each layer of wires 201. Among them, the wires 201 are arranged in a serpentine shape along the length direction in the same layer (i.e., in the primary surface), and the shapes of the wires 201 in each primary surface are consistent, and the serpentine unit of each wire 201 is "U" shaped.

[0047] refer to Figure 3 The battery cell 100 has a symmetrical square structure, and the two ends of the battery cell 100 are symmetrically provided with a positive electrode tab 101 and a negative electrode tab 102. The battery cell 100 also includes a circuit protection board to prevent it from short-circuiting during connection, and to stabilize the current and voltage during operation and prevent the battery from being overcharged or over-discharged. One of the wires 201 of the layered conductive connector 200 is connected to the positive electrode tabs 101 of the front and rear battery cells 100, and the other wire 201 is connected to the negative electrode tabs 102 of the front and rear battery cells 100.

[0048] It can be understood that the hierarchical conductive connector 200 shown in this embodiment has a three-layer structure with two bends in the thickness direction. During deformation, the multi-layer bending state of the flexible packaging shell first changes to a single-layer straight state, at which time the wire 201 is located in the same plane; then the deformation continues, and the wire 201 changes from a serpentine state to a straight state, thereby achieving a large deformation stretch of the deformable battery. This embodiment achieves a high deformation capacity of the battery as a whole through a hierarchical structure and deformation characteristics, and the number of stacking layers and arrangement cycles of the serpentine wire 201 in the hierarchical conductive connector can also be adjusted according to the desired degree of tensile deformation, so that it can achieve a higher deformation amount.

[0049] Example 2 This embodiment provides a hierarchical serpentine connection deformable battery, which is different from the embodiment 1 in that: Figure 4 , the wires 201 in each layer are wavy.

[0050] Example 3 This embodiment provides a hierarchical serpentine-connected deformable battery. Compared with the first embodiment, the only difference is that adjacent battery cells 100 are connected in series via a hierarchical conductive connector 200 .

[0051] refer to Figure 5 and Figure 6 Each hierarchical conductive connector 200 includes only one wire 201 and a flexible packaging shell covering the wire 201 , wherein the front end of the wire 201 is connected to the positive electrode tab 101 of the front battery unit 100 , and the rear end of the wire 201 is connected to the negative electrode tab 102 of the rear battery unit 100 .

[0052] Example 4 This embodiment provides a hierarchical serpentine connection deformable battery, which is different from the embodiment 1 in that: Figure 7 The deformable battery only includes two linearly arranged battery cells 100 and a hierarchical conductive connector 200 for connecting the two battery cells 100. The battery cells 100 and the hierarchical conductive connector 200 are solidified after being packaged in a deformable shell 300; the external circuit interface 301 is used for connection with electronic equipment. The battery cells 100 are connected in parallel, that is, two wires 201 are provided in the hierarchical conductive connector 200.

[0053] The deformable battery in this embodiment is manufactured by the following steps: First, the hierarchical conductive connection 200 is prefabricated: (1) Winding die 400 for manufacturing primary in-plane serpentine conductor 201: Figure 8The winding mold 400 includes a shallow groove 401 that is recessed downward and a frame 402 that surrounds the shallow groove 401. Two groups of array-arranged columns 403 are arranged in the shallow groove 401, and each group of columns 403 has two rows. The side walls of the columns 403 are provided with positioning grooves 404 that cooperate with the wires 201 at corresponding positions, and two frame grooves 405 for the two wires 201 to pass through are respectively provided at both ends of the frame 402.

[0054] (2) Arranging the wires: insert one end of a wire 201 into the shallow groove 401 from one of the frame grooves 405, wrap it around the column 403, and fix it through the positioning groove 404. The other end of the wire 201 passes through the opposite frame groove 405. Repeat the same steps for the other wire 201, and then pre-tighten the two wires 201.

[0055] (3) Initial solid demolding: Pour the flexible material into the shallow groove 401 of the winding mold 400 to encapsulate the two wires 201, and demold after curing to obtain a pre-packaged layered conductive connector 200.

[0056] Next is the connection of the battery unit 100 and the packaging of the deformable shell 300: (4) Design and assemble the removable housing mold 500: Reference Figures 10a-10d , assemble the detachable shell mold 500, the detachable shell mold 500 includes a base 501, two side baffles 502 and an inner partition 503, the two ends of the base 501 are provided with end plates 504 that form a rectangular frame with the side baffles 502, the base 501 is provided with a card slot 505, the side baffles 502 and the inner partition 503 are detachably inserted in the card slot 505 of the base 501, the inner partition 503 includes two "L"-shaped plates and its end faces are curved surfaces, the two "L"-shaped plates are cross-placed to guide the layered conductive connector 200 to bend outside the secondary surface to form an alternately stacked serpentine shape; wherein, the inner surface of the side baffle 502 is provided with a protrusion 506 at the position corresponding to the battery cell 100, which is used to fix the position of the battery cell 100.

[0057] (5) Placement of battery cells 100 and hierarchical conductive connectors 200: Place two battery cells 100 between two side baffles 502, wherein the spacing between the battery cells 100 and the side baffles 502 is maintained at 3-4 mm, and the distance between the end of the battery cell 100 and the end plate 504 is maintained at 4-5 mm; the pre-packaged hierarchical conductive connector 200 in step (3) is bent through the inner partition 503 and placed between two adjacent battery cells 100, and the two ends of one of the wires 201 are welded to the positive electrode tabs 101 of the two battery cells 100, and the two ends of the other wire 201 are welded to the negative electrode tabs 102 of the two battery cells 100. The welding points are insulated to ensure that the hierarchical conductive connector 200 has low internal resistance, high conductivity and good corrosion resistance.

[0058] (6) Secondary solid demolding: Pour a flexible material into the removable shell mold 500 to ensure that it can cover all battery cells 100 and the hierarchical conductive connectors 200. After the flexible material is completely solidified, remove the mold to obtain the hierarchical serpentine connection deformable battery.

[0059] It can be understood that the above manufacturing method can be applied to the manufacture of a deformable battery having multiple battery cells 100 and multiple hierarchical conductive connectors 200 after corresponding minor adjustments. The manufacturing method pre-packages the wires 201 in step (3), which facilitates the subsequent bending of the hierarchical conductive connectors 200 through the inner partition 503 so that the wires form an alternating stacked structure, thereby avoiding deformation and wire exposure caused by direct bending of the wires. In addition, the method of pre-packaging the wires reduces the difficulty of subsequent packaging of the deformable shell 300.

[0060] Example 5 This embodiment provides a hierarchical serpentine-connected deformable battery. Compared with Embodiment 4, the only difference is that the battery cells 100 are connected in series via a hierarchical conductive connector 200 , that is, only one conductive wire 201 is provided in the hierarchical conductive connector 200 .

[0061] refer to Fig. 9 The winding mold 400 of this embodiment includes a shallow groove 401 that is recessed downward and a frame 402 surrounding the shallow groove 401. Two rows of columns 403 are arranged in the shallow groove 401. The side walls of the columns 403 are provided with positioning grooves 404 that cooperate with the wires at corresponding positions. The two ends of the frame 402 are respectively provided with a frame groove 405 for the wire 201 to pass through.

[0062] The manufacturing process of the deformable battery is consistent with that of Example 4, with the only difference being that the number of wires 201 inserted into the winding mold 400 is reduced from two to one.

[0063] Example 6 This embodiment provides a hierarchical serpentine connection deformable battery, which is different from the embodiment 3 in that: Figure 11-13 The hierarchical conductive connector 200 has a five-layer alternating stacked structure, that is, the wires 201 have a five-layer alternating stacked structure in the thickness direction (ie, outside the secondary surface), and the flexible packaging shell has a five-layer alternating stacked structure covering each layer of the wires 201 .

[0064] The manufacturing method of the hierarchical serpentine connection deformable battery is basically the same as that in Example 4, except that: Fig.14 The inner partition 503 in the removable shell mold 500 is composed of two "u"-shaped plates, and the end surface of each "u"-shaped plate has two curved surfaces. The two "u"-shaped plates are arranged crosswise, thereby guiding the layered conductive connector 200 to form a five-layer secondary surface serpentine bend.

[0065] It can be understood that the deformable battery in this embodiment has a higher deformation ability than that in embodiments 1-5; this is because the unfolding ability of the five-layer layered conductive connector 200 under the same volume is higher than that of the three-layer layer; in addition, the configuration of the inner partition 503 in this embodiment can be adjusted to be suitable for guiding the shaping of the layered conductive connector 200 with more layers.

[0066] In summary, the present invention is based on a hierarchical design, and constructs a hierarchical conductive connector that is arranged in a serpentine shape and alternately stacked. When deformed, the hierarchical conductive connector preferentially changes from a multi-layer curved state to a single-layer straight state to achieve initial stretching; and when deformed further, the hierarchical conductive connector can continue to stretch, so that the wire tends to be straight from a serpentine state, and can also twist, thereby greatly doubling the overall stretching and twisting deformation capabilities of the deformable battery. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has a high industrial application value.

[0067] Among them, the terms such as "upper", "lower", "left", "right", "front", "back", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0068] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A hierarchical serpentine connection deformable battery, characterized in that: The invention comprises at least two battery cells and a layered conductive connector for connecting adjacent battery cells, wherein the layered conductive connector comprises conductive wires arranged in a serpentine shape in the length direction and alternately stacked in the thickness direction, each layer of conductive wires is coated with a flexible packaging shell with the same alternating stacking structure, and the battery cells and the layered conductive connectors are conformally coated with a deformable shell.

2. The hierarchical serpentine connection deformable battery according to claim 1, characterized in that: Both ends of the battery unit are provided with a positive electrode tab and a negative electrode tab.

3. The hierarchical serpentine connection deformable battery according to claim 2, characterized in that: Adjacent battery cells are connected in series via hierarchical conductive connectors.

4. The hierarchical serpentine connection deformable battery according to claim 3, characterized in that: The layered conductive connector includes a wire, the front end of which is connected to the positive electrode tab of the front battery unit, and the rear end of which is connected to the negative electrode tab of the rear battery unit; or the front end of which is connected to the negative electrode tab of the front battery unit, and the rear end of which is connected to the positive electrode tab of the rear battery unit.

5. The hierarchical serpentine connection deformable battery according to claim 2, characterized in that: Adjacent battery cells are connected in parallel via hierarchical conductive connectors.

6. The hierarchical serpentine connection deformable battery according to claim 5, characterized in that: The hierarchical conductive connector includes two wires, one of which is connected to the positive pole tabs of the front and rear battery units respectively, and the other is connected to the negative pole tabs of the front and rear battery units respectively.

7. The hierarchical serpentine connection deformable battery according to claim 1, characterized in that: The stacking number of the layered conductive connecting member in the thickness direction is an odd number.

8. The hierarchical serpentine connection deformable battery according to claim 1, characterized in that: The conductor is composed of a plurality of serpentine units, and the serpentine units include but are not limited to "U" shape, sawtooth shape, rectangle, and wave shape.

9. The hierarchical serpentine connection deformable battery according to claim 1, characterized in that: The deformable shell and the flexible packaging shell are made of flexible materials, and the flexible materials include but are not limited to Ecoflex and silicone.

10. A method for manufacturing a hierarchical serpentine-connected deformable battery according to any one of claims 1 to 9, characterized in that: The following steps are involved: (1) A winding mold for manufacturing a serpentine wire in a primary plane: the winding mold comprises a shallow groove that is recessed downward and a frame surrounding the shallow groove, the shallow groove is provided with a plurality of columns that match the serpentine period of the wire, the side walls of the columns are provided with positioning grooves that match the wire, and the frame is provided with a frame groove for the wire to pass through; (2) Arranging the wires: insert the wires from the frame groove into the shallow groove, and then wind them in the positioning grooves of the columns in sequence, and pre-tighten both ends of the wires to prevent them from loosening; (3) Initial solid demolding: Pour the flexible material into the shallow groove of the winding mold to encapsulate the wire, and demold after curing to obtain a layered conductive connector; (4) Designing and assembling a detachable shell mold: the detachable shell mold comprises a base, two side baffles and a plurality of inner baffles, wherein the side baffles and the inner baffles are detachably mounted on the base, and the inner baffles have a plurality of curved surfaces, and the inner baffles are used to guide the layered conductive connectors to bend outside the secondary surface to form an alternatingly stacked serpentine shape; (5) Placement of battery cells and hierarchical conductive connectors: Place a plurality of battery cells between two side baffles, bend the hierarchical conductive connectors manufactured in step (3) through the inner partition and place them between adjacent battery cells, weld the ends of the wires to the positive / negative electrode tabs of the corresponding battery cells, and perform insulation treatment on the welds; (6) Secondary solid demolding: Pour flexible material into the removable shell mold to ensure that it can cover all battery cells and hierarchical conductive connectors. After the flexible material is completely solidified, remove the mold to obtain a hierarchical serpentine connection deformable battery.

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