Structural battery for vehicle

Abstract

A structural battery for a vehicle may include a plurality of positive electrode layers, a plurality of electrolyte layers, and a plurality of negative electrode layers stacked in this order from top to bottom, in which the positive electrode layers and the negative electrode layers each include a positive electrode and a negative electrode coated with slurry layers on both surfaces of a carbon fiber current collector layer, respectively, and the carbon fiber current collector layer has a region that extends outward compared to the slurry layer.

Description

Technical Field

[0001] This disclosure relates to a structural battery for vehicles. Background Technology

[0002] Typically, lithium-ion batteries installed in electric vehicles account for a large portion of the vehicle's weight, but they do not perform any load-bearing function at all.

[0003] In comparison, such as Figure 1 As shown, the structural battery 500 is a component installed in the frame or structure 800 constituting the electric vehicle 1000, simultaneously performing its own load-bearing function and the charging, discharging, and voltage boosting functions of the high-voltage battery 600 installed on the vehicle floor 700. In other words, the structural battery 500 can function as a battery while performing the structural functions of the electric vehicle.

[0004] This type of battery is also known as a massless energy storage device because the weight of the battery itself is virtually nonexistent when it becomes part of the load-bearing structure. These hybrid batteries can significantly reduce vehicle weight. When structural batteries are used in electric vehicles, weight reduction leads to increased driving range.

[0005] Furthermore, the capacity of a structural battery is approximately 20% of that of a lithium-ion battery, lower than that of a lithium-ion battery, but because it does not have a separate battery cell, its weight is significantly reduced, thus reducing the energy required to power an electric vehicle. In addition, structural batteries have lower energy density and higher stability.

[0006] However, as Figure 2 As shown, a typical pouch cell in the prior art has the following structure: a positive electrode 10 containing a positive electrode slurry 12 and an aluminum current collector 14, and a negative electrode 20 containing a negative electrode slurry 22 and an aluminum current collector 24, are stacked together with a separator 30, and a pouch membrane 40 is attached to the outermost layer. The problem with this structure is its relatively weak mechanical rigidity and durability, because the separator 30 is used for insulation between the current collectors 14 and 24. Therefore, structures that improve rigidity by using a solid electrolyte layer instead of the separator have recently been developed. Additionally, a structural battery has been developed that improves mechanical rigidity and insulation by stacking a glass fiber prepreg insulator on the outside of the battery and forming a resin-impregnated sealed area.

[0007] Therefore, it is necessary to continue the research and development of structural batteries for vehicle applications. Summary of the Invention

[0008] This disclosure relates to a structural battery for vehicles, and more specifically, to a structural battery for electric vehicles that can be used as a vehicle body component for mechanical connection and simultaneously electrochemically connected to a lithium-ion battery for voltage boosting.

[0009] Embodiments of this disclosure may provide a structural battery for electric vehicles, wherein a carbon fiber current collector may be provided in the structural battery having a series connection structure, the area of ​​which extends beyond the electrolyte, and a resin impregnation area may be formed on the outside of the extended current collector to have an integrated structure between electrodes, and the extended reinforcement structure may be achieved through intralayer / interlayer bonding of the electrodes.

[0010] According to an example embodiment of this disclosure, a structural battery for electric vehicles may include multiple positive electrode layers, multiple electrolyte layers, and multiple negative electrode layers, which may be stacked sequentially from top to bottom. Each positive electrode layer and each negative electrode layer may include a positive electrode and a negative electrode coated with a slurry layer on both surfaces of a carbon fiber current collector layer, and the carbon fiber current collector layer may have a region that extends further outward than the slurry layer.

[0011] The edges of the positive electrode layer, electrolyte layer, and negative electrode layer can be impregnated with resin and sealed.

[0012] At the edges of the positive and negative electrode layers, glass fiber insulation layers can be respectively set, and their area extends further outward than that of the carbon fiber current collector layer.

[0013] The inner portion of the glass fiber insulation layer can be attached to the edge portion of the carbon fiber current collector layer using resin material.

[0014] The positive electrode can be formed by coating a positive electrode slurry layer on both surfaces of the corresponding carbon fiber current collector layer, and the negative electrode can be formed by coating a negative electrode slurry layer on both surfaces of the corresponding carbon fiber current collector layer.

[0015] The positive electrode slurry layer may include positive electrode active materials, binders, and conductive agents, while the negative electrode slurry layer may include negative electrode active materials, binders, and conductive agents.

[0016] Carbon fiber reinforcement layers can be stacked on the outer parts of the top and bottom layers respectively.

[0017] A soft film can be laminated between the top and bottom layers and their respective adjacent carbon fiber structural reinforcement layers.

[0018] Multiple positive and negative electrode layers can be set on the same plane.

[0019] Multiple glass fiber insulating layers in the positive electrode layer and multiple glass fiber insulating layers in the negative electrode layer can be arranged face-to-face and connected on the same plane.

[0020] The connection portions of the multiple glass fiber insulating layers in the positive electrode layer and the connection portions of the multiple glass fiber insulating layers in the negative electrode layer can be formed to be misaligned in the vertical direction.

[0021] Multiple positive and negative electrode layers can be set on different planes.

[0022] Multiple glass fiber insulating layers in the positive electrode layer and multiple glass fiber insulating layers in the negative electrode layer can be arranged to overlap each other.

[0023] Multiple glass fiber insulation layers of the positive electrode layer and multiple glass fiber insulation layers of the negative electrode layer can be pressurized and thermally fused to connect to a glass fiber insulation layer on another plane in an interlocking (joggle) shape (e.g., stepped or biased bent shape).

[0024] The positive and negative electrode layers can be arranged alternately and connected.

[0025] According to embodiments of the present disclosure, the structural battery may include a series connection structure, a structure in which the current collector extends beyond the electrolyte region, and a resin impregnation region may be formed on the outside of the extended current collector, thereby preventing water from flowing in and out between the electrolyte and the outside within the current collector, reducing electrochemical resistance and improving electrical efficiency.

[0026] By utilizing embodiments of this disclosure, intralayer / interlayer stiffness can be improved in all extended battery regions through intralayer / interlayer bonding of structural battery electrodes.

[0027] By installing a structural battery, which serves as a battery, within the vehicle's frame structure, embodiments of this disclosure can save battery space, improve layout, reduce weight, increase fuel efficiency, and enhance vehicle marketability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an electric vehicle in which a structural battery for an electric vehicle can be applied according to an exemplary embodiment of the present disclosure.

[0029] Figure 2 This is a schematic diagram illustrating the stacked structure of a typical pouch cell battery used as a structural battery in existing electric vehicles.

[0030] Figure 3 This is a diagram illustrating the stacked structure of the negative electrode of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure.

[0031] Figure 4 This is an exploded view showing the state in which the negative electrode and the glass fiber insulation layer of a structural battery for electric vehicles can be combined according to an exemplary embodiment of this disclosure.

[0032] Figure 5 This is a cross-sectional view showing the state in which the negative electrode and the glass fiber insulation layer of a structural battery for electric vehicles can be combined according to an exemplary embodiment of this disclosure.

[0033] Figure 6This is an exploded view showing the state in which the negative electrode layer and the positive electrode layer of a structural battery for electric vehicles can be combined according to an exemplary embodiment of the present disclosure.

[0034] Figure 7 This is a cross-sectional view showing the stacked structure between the negative electrode layer and the positive electrode layer of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure.

[0035] Figure 8 This is an exploded view showing the structure in which the negative electrode layer and the positive electrode layer of a structural battery for electric vehicles can be combined according to an exemplary embodiment of the present disclosure.

[0036] Figure 9 This is a cross-sectional view showing the stacked structure between the negative electrode layer and the positive electrode layer of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure.

[0037] Figure 10 This is an exploded view showing that the negative electrode laminate and the positive electrode laminate of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure can be arranged face to face in the same layer and overlap in the upper and lower layers.

[0038] Figure 11 This is a cross-sectional view showing the overlapping state of the negative electrode layer and the positive electrode layer in the upper and lower layers of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure.

[0039] Figure 12 This is an exploded sequence diagram illustrating how the negative and positive electrode layers of a structural battery for electric vehicles, according to an exemplary embodiment of the present disclosure, can be arranged to overlap in the same layer and in upper and lower layers.

[0040] Figure 13 This is a cross-sectional view showing, in sequence, the negative electrode layer and the positive electrode layer of the structural battery for electric vehicles according to an exemplary embodiment of the present disclosure, which can be arranged to overlap in the same layer and in upper and lower layers, and formed into an interlocking shape by pressurization and thermal fusion.

[0041] Figure 14 This is an exploded sequence diagram showing the state in which the negative electrode layer and positive electrode layer of a structural battery for electric vehicles, according to an exemplary embodiment of the present disclosure, can be stacked and combined in an alternating manner. Detailed Implementation

[0042] The exemplary embodiments of this disclosure will now be described in sufficient detail with reference to the accompanying drawings to enable those skilled in the art to readily implement them. As will be appreciated by those skilled in the art, the described exemplary embodiments can be modified in various ways without departing from the spirit or scope of this disclosure.

[0043] In various example embodiments, components with the same construction are described representatively using the same reference numerals in one example embodiment, while in other example embodiments, only components different from those in the example embodiment are described.

[0044] It is important to note that the accompanying drawings are schematic and not necessarily drawn to scale. Therefore, in the drawings, the relative dimensions and scales of components may be depicted as larger or smaller than they actually are to clarify the content of this disclosure, and a particular dimension is for illustrative purposes only and is not intended to be limiting. In the drawings, identical structures, elements, or parts have the same reference numerals so that similar features can be indicated even if they are shown in different figures. When it is said that any part is "on" another part, it means that the part is directly on or above the other part, with at least one intermediate part in between.

[0045] Example implementations in Figures 3 to 14 The figures are shown in the diagram. Therefore, various modifications to the figures are contemplated. Thus, the exemplary embodiments are not limited to the specific form of the shown area; for example, modifications to the manufacturing process may be included.

[0046] Next, we will refer to Figures 1 to 8 Describes a structural battery for an electric vehicle according to an example embodiment of this disclosure.

[0047] Figure 3 This is a diagram illustrating the stacked structure of the negative electrode of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure. Figure 4 This is an exploded view showing the state in which the negative electrode and the glass fiber insulation layer of a structural battery for electric vehicles can be combined according to an exemplary embodiment of this disclosure. Figure 5 This is a cross-sectional view showing the state of the negative electrode and the glass fiber insulation layer of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure.

[0048] Reference Figures 3 to 9 According to an example embodiment of the present disclosure, a structural battery for electric vehicles can be formed by sequentially stacking a plurality of positive electrode layers 510, a plurality of electrolyte layers 550 and a plurality of negative electrode layers 520 from top to bottom.

[0049] The positive electrode layer 510 and the negative electrode layer 520 may respectively comprise a positive electrode and a negative electrode coated with slurry layers 512 and 522 on the two surfaces of the carbon fiber current collector layer 530. The positive electrode can be formed by coating the two surfaces of the carbon fiber current collector layer 530 with the positive electrode slurry layer 512, and the negative electrode can be formed by coating the two surfaces of the carbon fiber current collector layer 530 with the negative electrode slurry layer 522.

[0050] The positive electrode slurry layer 512 may include a positive electrode active material, a binder, and a conductive agent, and the negative electrode slurry layer 522 may include a negative electrode active material, a binder, and a conductive agent. The positive electrode slurry layer 512 and the negative electrode slurry layer 522 may additionally include a conductive agent to supplement the conductivity of the positive and negative electrode active materials, and the conductivity of the electrode active materials can be improved by bonding the respective electrode active materials and conductive agents together with an adhesive.

[0051] The positive electrode may include a positive electrode slurry layer 512 and a positive electrode carbon fiber current collector layer 530, and the negative electrode may include a negative electrode slurry layer 522 and a negative electrode carbon fiber current collector layer 530. The positive and negative electrodes constitute a positive electrode layer 510 and a negative electrode layer 520, respectively, and the positive electrode layer 510 and the negative electrode layer 520 can be connected through an electrolyte layer 550 therebetween.

[0052] The electrolyte layer 550 can allow lithium ions to pass through and block electrons, thereby enabling redox reactions between the positive and negative electrodes, and may include a solid electrolyte.

[0053] At the edges of each positive electrode layer 510 and each negative electrode layer 520, a glass fiber insulation layer (e.g., "prepreg") 542 may be provided. The prepreg may comprise non-conductive glass fibers impregnated with resin and insulate the carbon fiber current collector layer 530. The glass fiber insulation layer 542 may have a square or rectangular opening formed in the center for attachment to the four edge portions of the carbon fiber current collector layer 530. In cross-section, the glass fiber insulation layer 542 and the slurry layer 512 are spaced apart from each other by a certain distance, and the slurry layer 512 and the carbon fiber current collector layer 530 are exposed through the opening in the glass fiber insulation layer 542.

[0054] The carbon fiber current collector layer 530 may have a region extending further outward than the positive electrode slurry layer 512 and the negative electrode slurry layer 522. The edges of the positive electrode layer 510, the electrolyte layer 550, and the negative electrode layer 520 may be impregnated with resin and sealed.

[0055] Although not shown, the positive electrode tab and negative electrode can be positioned to extend from the inside to the outside of the sealed area. That is, the connection points between the positive and negative electrode tabs and the carbon fiber current collector layer 530 can be located inside the conductive sealed area. The resin-impregnated area can be a non-conductive area with increased mechanical strength, where moisture and other substances cannot penetrate from the outside.

[0056] At the edges of the positive electrode layer 510 and the negative electrode layer 520, a glass fiber insulating layer 542 may be provided, which has a region that extends further outward than the carbon fiber current collector layer 530. The lower inner part of the glass fiber insulating layer 542 may be attached to the upper edge of the carbon fiber current collector layer 530 by means of a resin material 535.

[0057] Figure 6 This is an exploded view showing the state in which the negative electrode layer and the positive electrode layer of a structural battery for electric vehicles can be combined according to an exemplary embodiment of the present disclosure. Figure 7 This is a cross-sectional view showing a stacked structure including a negative electrode layer and a positive electrode layer of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure.

[0058] like Figure 6 and Figure 7 As shown, the positive electrode layer 510 and the negative electrode layer 520 can be stacked in the vertical direction. In some embodiments, multiple positive electrode layers 510 and multiple negative electrode layers 520 can be stacked alternately and sequentially. An electrolyte layer 550 can be stacked between the multiple positive electrode layers 510 and the multiple negative electrode layers 520, allowing lithium ions to pass between the positive electrode layers 510 and the negative electrode layers 520 and blocking electrons to achieve a redox reaction between the positive and negative electrodes.

[0059] Figure 8 This is an exploded view showing the structure in which the negative electrode layer and the positive electrode layer of a structural battery for electric vehicles can be combined according to an exemplary embodiment of the present disclosure. Figure 9 This is a cross-sectional view showing the stacked structure between the negative electrode layer and the positive electrode layer of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure.

[0060] Reference Figure 8 and Figure 9 In the structure of a structural battery for electric vehicles according to an exemplary embodiment of this disclosure, a carbon fiber structural reinforcement layer 570 may be laminated on the outside of each upper and lower outermost electrolyte layer 550. Although Figure 8 and Figure 9 Only one positive electrode layer 510 and one negative electrode layer 520 are shown, but in some embodiments, for example, multiple positive electrode layers 510 and multiple negative electrode layers 520 may be alternately stacked between carbon fiber structure reinforcement layers 570. The carbon fiber structure reinforcement layer 570 may include multiple layers, and a soft coating 560 may be stacked between the outermost upper and lower electrolyte layers 550 and the carbon fiber structure reinforcement layer 570.

[0061] Figure 10 This is an exploded view showing the negative electrode layer and positive electrode layer of a structural battery for electric vehicles arranged face-to-face in the same layer and overlapping in the upper and lower layers according to an exemplary embodiment of the present disclosure. Figure 11 This is a cross-sectional view showing the negative electrode layer and positive electrode layer of a structural battery for electric vehicles arranged face-to-face in the same layer and overlapping in the upper and lower layers according to an exemplary embodiment of the present disclosure.

[0062] Reference Figure 10Multiple positive electrode layers 510 and 610 and multiple negative electrode layers 520 and 620 can be disposed on the same plane. Multiple positive electrode layers 510 and 610 disposed on the same plane can be arranged in a row and connected. Below the multiple positive electrode layers 510 and 610, multiple negative electrode layers 520 and 620 can be arranged in a row and connected on the same plane. From top to bottom, multiple positive electrode layers 510 and 610 and multiple negative electrode layers 520 and 620 can be alternately stacked.

[0063] The multiple glass fiber insulating layers 542 and 642 of the positive electrode layers 510 and 610 can be arranged face to face and connected on the same plane. Similarly, the multiple glass fiber insulating layers 544 and 644 of the negative electrode layers 520 and 620 can be arranged face to face and connected on the same plane.

[0064] like Figure 11 As shown, the connection sites of the plurality of glass fiber insulating layers 542 and 642 of the positive electrode layers 510 and 610 and the connection sites of the plurality of glass fiber insulating layers 544 and 644 of the negative electrode layers 520 and 620 can be staggered relative to each other in the vertical direction. The face-to-face disconnections of adjacent electrode layers can overlap, thereby ensuring the connectivity of the disconnections.

[0065] During thermal fusion, the residual resin in the glass fiber prepreg layer can flow into and cure within the electrode layer and between the electrode layers, allowing all layers within and between the electrode layers to bond and integrate, thereby improving the stiffness of all extended battery regions.

[0066] Figure 12 This is an exploded sequence diagram showing the construction of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure, in which the negative electrode layer and the positive electrode layer are arranged to overlap in the same layer and in the upper and lower layers. Figure 13 This is a cross-sectional view showing, in sequence, the negative electrode layer and the positive electrode layer of the structural battery for electric vehicles according to an exemplary embodiment of the present disclosure, arranged to overlap in the same layer and in the upper and lower layers, and formed into an interlocking shape by pressurized thermal fusion.

[0067] Reference Figure 12 Multiple positive electrode layers 510 and 610 and multiple negative electrode layers 520 and 620 can be disposed on different planes. Positive electrode layers 510 and 610 and negative electrode layers 520 and 620 can each be located individually on each plane. Positive electrode layers 510 and negative electrode layers 520 can be arranged in the same position in the vertical direction, another negative electrode layer 620 can be disposed between positive electrode layers 510 and negative electrode layers 520, and another positive electrode layer 610 can be disposed on top of positive electrode layer 510. That is, multiple glass fiber insulating layers 542 and 642 of positive electrode layers 510 and 610 and multiple glass fiber insulating layers 544 and 644 of negative electrode layers 520 and 620 can be arranged to overlap each other.

[0068] Reference Figure 13 Multiple glass fiber insulating layers 542 and 642 of the positive electrode layers 510 and 610, and multiple glass fiber insulating layers 544 and 644 of the negative electrode layers 520 and 620, can be pressurized and thermally fused to bond with glass fiber insulating layers on another plane in an interlocking shape. When the interlocking shape is formed, electrode layers of the same polarity can be arranged on the same layer, and the bonding stiffness between the cells can be improved by the interlocking shape.

[0069] Figure 14 This is an exploded sequence diagram showing the alternating arrangement and stacking of the negative electrode layer and positive electrode layer of a structural battery for electric vehicles according to an exemplary embodiment of the present disclosure.

[0070] Reference Figure 14 The electrode layer of a structural battery for electric vehicles can be formed in Figure 12 and Figure 13 The stacked shape of the electrode layers shown extends to more electrode layers. Multiple positive electrode layers 510, 610, 710, and 810, and multiple negative electrode layers 520, 620, 720, and 820 can be disposed on different planes and arranged in the same position in the vertical direction. Multiple glass fiber insulating layers of positive electrode layers 510, 610, 710, and 810, and multiple glass fiber insulating layers of negative electrode layers 520, 620, 720, and 820 can be arranged to overlap each other.

[0071] Furthermore, in this example, multiple glass fiber insulating layers of positive electrode layers 510, 610, 710 and 810 and multiple glass fiber insulating layers of negative electrode layers 520, 620, 720 and 820 can be pressurized and thermally fused to bond with other glass fiber insulating layers on the same plane in an interlocking shape, and the interlocking shape can improve the bonding stiffness between the batteries.

[0072] As described above, according to embodiments of the present disclosure, in a structural battery having a series connection structure, a current collector extending beyond the electrolyte region can be provided, and a resin-impregnated region can be formed on the outside of the extended current collector, thereby preventing water from flowing in and out between the electrolyte and the outside within the current collector, reducing electrochemical resistance and improving electrical efficiency.

[0073] In embodiments of this disclosure, intra-layer / inter-layer stiffness can be improved in all extended battery regions by structurally bonding the battery electrodes.

[0074] By utilizing embodiments of this disclosure, by installing a structural battery, which serves as a battery, within the vehicle's frame structure, battery space can be saved, layout improved, weight reduced, fuel efficiency increased, and vehicle marketability enhanced.

[0075] Although this disclosure has been described in conjunction with exemplary embodiments that are now considered practical, it is to be understood that this disclosure is not necessarily limited to the disclosed exemplary embodiments. Rather, it is intended to cover various modifications and equivalent arrangements that are included within the spirit and scope of the appended claims.

Claims

1. A structural battery for a vehicle, comprising: Multiple positive electrode layers; Multiple electrolyte layers; and Multiple negative electrode layers, The plurality of positive electrode layers, the plurality of electrolyte layers, and the plurality of negative electrode layers are stacked sequentially from top to bottom; Each of the plurality of positive electrode layers and each of the plurality of negative electrode layers respectively includes a positive electrode and a negative electrode coated with a slurry layer on two surfaces of the carbon fiber current collector layer; The carbon fiber current collector layer has a carbon fiber current collector layer region that extends outward compared to the slurry layer.

2. The structural battery according to claim 1, wherein, The edges of each of the plurality of positive electrode layers, each of the plurality of electrolyte layers, and each of the plurality of negative electrode layers are impregnated with resin and sealed.

3. The structural battery according to claim 1, wherein, At the edge of the plurality of positive electrode layers and the plurality of negative electrode layers, each of the plurality of positive electrode layers and each of the plurality of negative electrode layers includes a glass fiber insulation layer having a glass fiber insulation layer region extending outward compared to the carbon fiber current collector layer.

4. The structural battery according to claim 3, wherein, The inner portion of the glass fiber insulation layer is attached to the edge of the carbon fiber current collector layer via a resin material.

5. The structural battery according to claim 1, wherein, The positive electrode comprises a positive electrode slurry layer coated on two surfaces of the corresponding carbon fiber current collector layer, and The negative electrode includes a negative electrode slurry layer coated on two surfaces of the corresponding carbon fiber current collector layer.

6. The structural battery according to claim 5, wherein, The positive electrode slurry layer includes a positive electrode active material, a first binder, and a first conductive agent, and The negative electrode slurry layer includes a negative electrode active material, a second binder, and a second conductive agent.

7. The structural battery according to claim 1, further comprising: Carbon fiber structural reinforcement layers are stacked on the outer parts of the top and bottom layers, respectively.

8. The structural battery according to claim 7, further comprising: A soft film is layered between each of the carbon fiber structure reinforcement layers and the top and bottom layers.

9. The structural battery according to claim 1, wherein, The plurality of positive electrode layers and the plurality of negative electrode layers are located on the same plane.

10. The structural battery according to claim 9, wherein, The multiple first glass fiber insulating layers of the multiple positive electrode layers and the multiple second glass fiber insulating layers of the multiple negative electrode layers are arranged face-to-face and connected on the same plane.

11. The structural battery according to claim 10, wherein, The first connection portions of the plurality of first glass fiber insulating layers of the plurality of positive electrode layers and the second connection portions of the plurality of second glass fiber insulating layers of the plurality of negative electrode layers are staggered in the vertical direction.

12. The structural battery according to claim 1, wherein, The plurality of positive electrode layers and the plurality of negative electrode layers are disposed on different planes.

13. The structural battery according to claim 12, wherein, The plurality of first glass fiber insulating layers of the plurality of positive electrode layers and the plurality of second glass fiber insulating layers of the plurality of negative electrode layers are arranged to overlap each other.

14. The structural battery according to claim 13, wherein, The multiple first glass fiber insulating layers of the multiple positive electrode layers and the multiple second glass fiber insulating layers of the multiple negative electrode layers are pressurized and thermally fused together to form an interlocking shape.

15. The structural battery according to claim 13, wherein, The plurality of positive electrode layers and the plurality of negative electrode layers are arranged alternately and combined.

16. A structural battery for a vehicle, comprising: A positive electrode layer, including a positive electrode, wherein the positive electrode includes: Positive electrode carbon fiber current collector layer; The first positive electrode slurry layer on the first positive electrode carbon fiber current collector layer side of the positive electrode carbon fiber current collector layer; and A second positive electrode slurry layer on the side of the second positive electrode carbon fiber current collector layer of the positive electrode carbon fiber current collector layer, wherein the side of the first positive electrode carbon fiber current collector layer is opposite to the side of the second positive electrode carbon fiber current collector layer, wherein the positive electrode carbon fiber current collector layer includes an outer positive electrode carbon fiber current collector layer region that extends outward compared with the first positive electrode slurry layer and the second positive electrode slurry layer. A negative electrode layer, including a negative electrode, wherein the negative electrode includes: Negative electrode carbon fiber current collector layer; The first negative electrode slurry layer on the side of the first negative electrode carbon fiber current collector layer of the negative electrode carbon fiber current collector layer; and A second negative electrode slurry layer on the side of the second negative electrode carbon fiber current collector layer of the negative electrode carbon fiber current collector layer, wherein the side of the first negative electrode carbon fiber current collector layer is opposite to the side of the second negative electrode carbon fiber current collector layer, wherein the negative electrode carbon fiber current collector layer includes an outer negative electrode carbon fiber current collector layer region extending outward compared to the first negative electrode slurry layer and the second negative electrode slurry layer; and An electrolyte layer is located between the second positive electrode slurry layer and the first negative electrode slurry layer, and is in electrical contact with both.

17. The structural battery according to claim 16, wherein, The positive electrode layer further includes: a first glass fiber insulating layer, forming a framework around the positive electrode and attached to the outer positive electrode carbon fiber current collector layer region of the positive electrode carbon fiber current collector layer, such that the first glass fiber insulating layer includes an outer first glass fiber insulating layer region extending outward compared to the positive electrode carbon fiber current collector layer, and The negative electrode layer further includes a second glass fiber insulating layer, which forms a frame around the negative electrode and is attached to the outer negative electrode carbon fiber current collector layer region of the negative electrode carbon fiber current collector layer, such that the second glass fiber insulating layer includes an outer second glass fiber insulating layer region that extends outward compared to the negative electrode carbon fiber current collector layer.

18. The structural battery according to claim 16, wherein, The first positive electrode slurry layer and the second positive electrode slurry layer each include a positive electrode active material, a first binder, and a first conductive agent; The first negative electrode slurry layer and the second negative electrode slurry layer each include a negative electrode active material, a second binder, and a second conductive agent.

19. A structural battery for a vehicle, comprising: A plurality of positive electrode layers, wherein each of the plurality of positive electrode layers includes a positive electrode, wherein the positive electrode includes: Positive electrode carbon fiber current collector layer; The first positive electrode slurry layer on the first positive electrode carbon fiber current collector layer side of the positive electrode carbon fiber current collector layer; and A second positive electrode slurry layer on the side of the second positive electrode carbon fiber current collector layer of the positive electrode carbon fiber current collector layer, wherein the side of the first positive electrode carbon fiber current collector layer is opposite to the side of the second positive electrode carbon fiber current collector layer, wherein the positive electrode carbon fiber current collector layer includes an outer positive electrode carbon fiber current collector layer region that extends outward compared with the first positive electrode slurry layer and the second positive electrode slurry layer. A plurality of negative electrode layers, wherein each of the plurality of negative electrode layers includes a negative electrode, wherein the negative electrode includes: Negative electrode carbon fiber current collector layer; The first negative electrode slurry layer on the side of the first negative electrode carbon fiber current collector layer of the negative electrode carbon fiber current collector layer; and A second negative electrode slurry layer on the side of the second negative electrode carbon fiber current collector layer of the negative electrode carbon fiber current collector layer, wherein the side of the first negative electrode carbon fiber current collector layer is opposite to the side of the second negative electrode carbon fiber current collector layer, wherein the negative electrode carbon fiber current collector layer includes an outer negative electrode carbon fiber current collector layer region extending outward compared to the first negative electrode slurry layer and the second negative electrode slurry layer; and Multiple electrolyte layers are sandwiched between multiple positive electrode layers and multiple negative electrode layers in an alternating stacked order relative to the multiple electrolyte layers, such that for a given positive electrode layer, a given electrolyte layer, and a given negative electrode layer in a first stacked order, the given electrolyte layer is located between the second positive electrode slurry layer of the given positive electrode layer and the first negative electrode slurry layer of the given negative electrode layer, and is in electrical contact with both.

20. The structural battery according to claim 19, further comprising: The upper soft membrane on the topmost layer of the multiple electrolyte layers; An upper carbon fiber structure reinforcement layer laminated on the upper soft film; The lower soft membrane on the bottommost layer of the multiple electrolyte layers; and A lower carbon fiber structure reinforcement layer is laminated on the lower soft film.

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