TWI643386B - Battery structure - Google Patents

Abstract

The invention discloses a battery structure, which mainly comprises a first collector layer, a second collector layer, a glue frame for bonding the first collector layer and the second collector layer, a first collector layer and a second layer. The collector layer and the plastic frame form a surrounding area, and the sealing area defines an electrochemical system layer. The electrochemical system layer comprises a first active material layer, a second active material layer and a first active layer. a separation layer between the material layer and the second active material layer, the first active material layer is in contact with the first collector layer, and the second active material layer is in contact with the second collector layer, wherein the outer side wall surface of the plastic frame is provided with an insulation The layer extends to the periphery of the first collector layer and/or the second collector layer to avoid external short circuit caused by contact between the first collector layer and the second collector layer after the bending.

Description

Battery structure

The present invention relates to a battery structure, and more particularly to a battery structure that avoids external short circuits.

In order to meet the needs of human science and technology, various wearable electronic devices have been born accordingly. In order to make various wearable electronic devices more suitable for thin and light, space allocation in electronic devices has become an important issue, and can be set in a non-planar flexible type. The battery brings one of the solutions to this problem. Please refer to FIG. 1 , which is a cross-sectional view showing the structure of a current flexible solid state lithium battery. As shown in the figure, the flexible solid state lithium battery 40 mainly includes a first collector layer 42 , a second collector layer 44 , and a first collector layer 42 and a second collector layer 44 . a plastic frame 46 is formed to form a surrounding area, wherein the contents of the enclosed area are sequentially provided with a first active material layer 50, a separating layer 52 and a second active material layer 54, a first active material layer 50, and an isolating layer. 52 and the second active material layer 54 constitute an electrochemical system layer 56, and the first active material layer 50 is in contact with the first collector layer 42, and the second active material layer 54 is in contact with the second collector layer 44. The flexible solid state lithium battery 40 is characterized in that it is dynamically bendable as a whole, but an external short circuit occurs due to the contact of the first collector layer 42 with the second collector layer 44 during the bending process.

In view of the above, the present invention is directed to the absence of the above-described prior art, and proposes a battery structure to effectively overcome the above problems.

The main object of the present invention is to provide a battery structure in which an insulating layer is disposed on a periphery of at least one of the first collector layer and/or the second collector layer to prevent the battery from being bent, the first and second sets. The electrical layer is externally shorted due to contact.

Another object of the present invention is to provide a battery structure having an insulating layer disposed on a periphery of at least one of the first collector layer and/or the second collector layer for bonding The plastic frame between the first collector layer and the second collector layer is further covered with an insulating layer to prevent the first and second collector layers from being externally short-circuited due to contact when the battery is bent.

Still another object of the present invention is to provide a battery structure having an insulating layer disposed on a periphery of at least one of the first collector layer and/or the second collector layer, sandwiched between the first collector layer and the second episode The plastic frame between the electric layers is composed of a plurality of colloid layers, and at least one of the plurality of colloid layers is coated with an insulating layer to prevent the first and second collector layers from being externally short-circuited due to contact when the battery is bent.

Another object of the present invention is to provide a battery structure, wherein the plastic frame sandwiched between the first collector layer and the second collector layer is composed of one or more colloid layers, and the outer sidewall of the colloid layer is provided with an extension to The insulating layer of the collector layer prevents the first and second collector layers from being externally short-circuited due to contact when the battery is bent.

In order to achieve the above object, the present invention provides a battery structure, which mainly includes a first collector layer, a second collector layer, a glued first collector layer and a second collector layer, a collector layer, a second collector layer and a plastic frame form a surrounding area, wherein the enclosing area comprises an electrochemical system layer comprising a first active material layer, a second active material layer and a layer disposed on a separation layer between the first active material layer and the second active material layer, the first active material layer is in contact with the first collector layer, the second active material layer is in contact with the second collector layer, and a first collector layer is disposed on the first collector layer The insulating layer on the periphery of the second collector layer and/or the second collector layer is characterized in that the insulating layer is covered by the plastic frame to avoid an external short circuit caused by the contact between the first collector layer and the second collector layer after the bending.

The invention further provides another battery structure, which mainly comprises a first collector layer; a second collector layer; a plastic frame sandwiched between the first collector layer and the second collector layer to form a In the surrounding area, the plastic frame comprises a first colloid layer and a second colloid layer, the first colloid layer is adhered to the first collector layer, and the second colloid layer is bonded to the second collector layer; an electrochemical system layer, It is disposed in the enclosing area, and the electrochemical system layer comprises a first active material layer, a second active material layer and a separation layer disposed between the first active material layer and the second active material layer, the first active material The layer is in contact with the first collector layer, the second active material layer is in contact with the second collector layer, and the at least one insulating layer is disposed on a periphery of the first collector layer and/or the second collector layer.

The present invention further provides another battery structure, which mainly includes a first a collector layer; a second collector layer; a plastic frame interposed between the first collector layer and the second collector layer to form a surrounding area; and an electrochemical system layer Provided in the enclosed area, the electrochemical system layer comprises a first active material layer, a second active material layer and a separation layer disposed between the first active material layer and the second active material layer, the first active material The layer is in contact with the first collector layer, and the second active material layer is in contact with the second collector layer; wherein the outer sidewall surface of the plastic frame is provided with an insulating layer, and the insulating layer extends to the first collector layer and/or the first layer The periphery of the second collector layer.

In an embodiment of the invention, the battery structure is a flexible battery or a soft battery.

The purpose, technical content, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments.

10, 40‧‧‧Flexible solid state lithium battery

12, 42‧‧‧ first collector layer

14, 44‧‧‧Second collector layer

16, 46‧‧‧ plastic frame

161‧‧‧First colloid layer

162‧‧‧Second colloid layer

163‧‧‧ third colloid layer

20, 50‧‧‧ first active material layer

22, 52‧‧‧ isolation layer

24, 54‧‧‧Second active material layer

26, 56‧‧ ‧ electrochemical system layer

28‧‧‧Insulation

30‧‧‧Protective layer

A‧‧‧ bottom

B‧‧‧ side

C‧‧‧ top surface

Figure 1 is a cross-sectional view showing the structure of a currently flexible solid state lithium battery.

2(a) to 2(d) are schematic views showing the structure of an embodiment of the present invention.

3(a) to 3(c) are schematic views showing the structure of another embodiment of the present invention.

4(a) to 4(c) are schematic views showing the structure of still another embodiment of the present invention.

5(a) to 5(c) are schematic views showing the structure of another embodiment of the present invention.

6(a) to 6(e) are schematic views showing the structure of an embodiment of the present invention.

7(a) to 7(g) are schematic views showing the structure of an embodiment of the present invention.

8(a) to 8(f) are schematic views showing the structure of an embodiment of the present invention.

9(a) to 9(d) are schematic views showing the structure of an embodiment of the present invention.

10(a) to 10(l) are schematic views showing the structure of an embodiment of the present invention.

11(a) to 11(b) are schematic views showing the structure of an embodiment of the present invention.

12(a) to 12(f) are schematic views showing the structure of an embodiment of the present invention.

13(a) to 13(b) are schematic views showing the structure of an embodiment of the present invention.

14(a) to 14(b) are schematic views showing the structure of an embodiment of the present invention.

15(a) to 15(d) are schematic views showing the structure of an embodiment of the present invention.

16(a) to 16(r) are schematic views showing the structure of an embodiment of the present invention.

17(a) to 17(b) are schematic views showing the structure of an embodiment of the present invention.

18(a) to 18(c) are schematic views showing the structure of an embodiment of the present invention.

19(a) to 19(c) are schematic views showing the structure of an embodiment of the present invention.

20(a) to 20(c) are schematic views showing the structure of an embodiment of the present invention.

Figure 21 is a schematic view showing the structure of an embodiment of the present invention.

The invention proposes various solutions for the problem that the flexible solid lithium battery is externally short-circuited due to mutual contact after the bending of the first and second collector layers. The peripheral edge defined below is a surface that includes side surfaces and/or extends upward and/or downward from the side surfaces. Furthermore, the present invention is directed to the problem that the first and second collector layers of the flexible solid-state lithium battery are externally short-circuited due to mutual contact, and therefore the main component structure of the flexible solid-state lithium battery is inherited. The contents shown in Fig. 1 and the description thereof are explained in the following explanatory drawings only with a partial schematic diagram, which will be described first.

Method 1: The plastic frame is covered with an insulating layer

As shown in FIG. 2(a), the flexible solid state lithium battery 10 capable of avoiding the external short circuit problem mainly includes a first collector layer 12, a second collector layer 14, and a first set of adhesion. The plastic frame 12 between the electrical layer 12 and the second collector layer 14 forms a surrounding area with the first collector layer 12 and the second collector layer 14 and the plastic frame 16. An electrochemical system layer 26 is disposed in the enclosing area, and the electrochemical system layer 26 includes a first active material layer 20, a second active material layer 24, and a first active material layer 20 and a second active material layer. In the 24 isolation layers 22, the first active material layer 20 is in contact with the first collector layer 12, and the second active material layer 24 is in contact with the second collector layer 14. At least one insulating layer 28 is disposed on the periphery of the first collector layer 12 and/or the second collector layer 14, and the plastic frame 16 covers the insulating layer 28. Under such a design, when the flexible solid state lithium battery 10 is bent, the presence of the insulating layer 28 can prevent the first collector layer 12 and the second collector layer 14 from being externally short-circuited due to contact. The term "adhesion" as used herein means bonding and first collecting layer 12 and second set The position between the electrical layer 14 and the plastic frame 16 is fixed.

In the second (a) figure, the plastic frame 16 is completely covered with the insulating layer 28, but the plastic frame 16 may be covered with the insulating layer 28 and both are flush at the edges, for example, at the side b or the bottom surface a Flush, each of which is in the state shown in Fig. 2(b) or Fig. 2(c). In addition, the insulating layer 28 may extend from the periphery of the first collector layer 12 and/or the second collector layer 14 to the surface, and is used as a protective layer as shown in FIG. 2(d).

The above-mentioned plastic frame 16 (shown in FIG. 2(a)) forms a surrounding area with the first collector layer 12 and the second collector layer 14 to accommodate the electrochemical system layer 26, and thus in the orthographic projection direction. The electrochemical system layer 26 completely contained in the enclosed area will be completely located in the region of the first collector layer 12 and/or the second collector layer 14, in other words, the orthographic area of the first active material layer 20. Less than the orthographic projection area of the first collector layer 12, the orthographic projection area of the second active material layer 24 is smaller than the orthographic projection area of the second collector layer 14.

In addition, in other aspects, the plastic frame 16 may be partially located in the orthographic projection area of the first collector layer 12 and the second collector layer 14, for example, the plastic frame 16 may be protruded from the The front projection area of the collector layer 12 and the second collector layer 14, that is, when the first collector layer 12 and the second collector layer 14 have the same length in cross section, the frame 16 can protrude from the A collector layer 12 and a second collector layer 14 are external to each other (not shown).

Please refer to the plastic frame shown in FIG. 3(a) to FIG. 3(c) to include a first colloid layer 161 and a second colloid layer 162. The first colloid layer 161 is adhered to the first collector layer 12. The second colloid layer 162 is bonded to the second collector layer 14. The first colloid layer 161 and the second colloid layer 162 may have different or substantially the same material composition. The first colloid layer 161 and/or the second layer. The colloid layer 162 covers the insulating layer 28.

For example, as shown in FIG. 3(a), the first colloid layer 161 completely encapsulates the insulating layer 28. It is also possible that the first colloid layer 161 is flush with the edge of the insulating layer 28 as shown in Fig. 3(b) or Fig. 3(c).

Furthermore, the second colloid layer 162 may completely cover the insulating layer 28 as shown in FIG. 4(a), but the second colloid layer 162 may be flush with the edge of the insulating layer 28. The state shown in Figure 4(b) or Figure 4(c).

Alternatively, the first colloid layer 161 and the second colloid layer 162 simultaneously cover the insulating layer. At this time, as in the previous state, the first colloid layer 161 and the second colloid layer 162 can be completely covered with the insulating layer 28 at the same time. The colloid layer 161 and the second colloid layer 162 are partially flush with the insulating layer at the same time, and each of them is in the state shown in Figs. 5(a), 5(b) and 5(c).

In addition, before the first colloid layer 161 completely covers the insulating layer 28, the second colloid layer 162 is flushed with respect to the first colloid layer 161 at different margins, as shown in FIG. 6(a). Figure 6(b) shows. Alternatively, the first colloid layer 161 is covered with the insulating layer 28, which may also be referred to as incomplete cladding, that is, as shown, a portion of the edge of the insulating layer 28 is exposed outside the first colloid layer 161, and the second colloid layer 162 is completely covered. The first colloid layer 161 extends to the edge of the insulating layer 28 exposed to the first colloid layer 161 as shown in Figures 6(c) and 6(d). Alternatively, the first colloid layer 161 and the second colloid layer 162 are partially flush with each other as shown in Fig. 6(e).

The plastic frame 16 shown in FIGS. 7( a) to 7 ( g ) may further include a third colloid layer 163 sandwiched between the first colloid layer 161 and the second colloid layer. Between 161. In this case, the three layers of the colloid layers 161, 162, and 163 can be formed into several different cladding structures with respect to the insulating layer 28 to avoid contact between the first collector layer 12 and the second collector layer 14. . In this case, the first colloid layer 161 and the second colloid layer 162 can be adjusted according to the material of the first collector layer 12 and the second collector layer 14 respectively compared with the third colloid layer 163. Therefore, the first colloid layer 161 and the second colloid layer 162 are better in adhesion to the different material than the third colloid layer 163.

For example, at least one of the first colloid layer 161, the second colloid layer 162, and the third colloid layer 163 completely covers the insulating layer 28, as shown in FIGS. 7(a) to 7(g). Alternatively, the first colloid layer 161, the second colloid layer 162 or the third colloid layer 163 and the insulating layer 28 are flush at the margin of any portion, as shown in Figures 8(a) to 8(f). For example, in the eighth (a) diagram, the first colloid layer 161 and the insulating layer 28 are flush with the side edges. In the eighth (b) diagram, the first colloid layer 161 and the insulating layer 28 are flush at the bottom margin.

In the case where the first colloid layer 161 completely covers the insulating layer 28, the second colloid layer 162 and/or the third colloid layer 163 coats the first colloid layer 161 and is combined with the first colloid Layer 161 is flush at a portion of the margin, as shown in Figures 9(a) through 9(d).

In another embodiment, the first colloid layer 161 is coated with the insulating layer 28 in a manner that is partially flush with the portion of the insulating layer 28, while the second colloid layer 162 or the third colloid layer 163 completely covers the first colloid layer. 161, or a more extended cladding insulating layer 28 is exposed on the sidewall of the first colloid layer 161, or more or partially flushed to cover the first colloid layer 161, as shown in Figures 10(a) through 10(l) The state shown. For example, in the 10th (a)th to the 10th (c)th, the first colloid layer 161 and the insulating layer 28 are flush with the side edges, and the third colloid layer 163 completely covers the first colloid layer 161. And extending the cladding insulating layer 28 to be exposed on the sidewall of the first colloid layer 161, as shown in FIG. 10(a). Alternatively, the side edge of the third colloid layer 163 may be coated with the first colloid layer 161 in a manner flush with the side edges of the first colloid layer 161, as shown in FIG. 10(b). Further, the bottom portion of the third colloid layer 163 is covered with the first colloid layer 161 in a manner flush with the bottom margin of the first colloid layer 161, as shown in FIG. 10(c). In the 10th (d)th to the 10th (f)th, the first colloid layer 161 and the insulating layer 28 are flush with the bottom margin, and the third colloidal layer 163 is positioned relative to the first colloidal layer 161 as before. As such, no further details will be made herein. In the 10th (g)th to the 10th (1th)th plan, the relative structure between the first colloid layer 161, the second colloid layer 162 and the insulating layer 28 is changed, and the correlation is not performed here because of the foregoing approximation. Narration.

In another embodiment, the third colloid layer 163 completely covers the insulating layer 28 while the second colloid layer 162 covers the third colloid layer 163 and is flush with the third colloid layer 163 portion, as shown in FIG. 11(a) Go to the state shown in Figure 11(b).

In another embodiment, the third colloid layer 163 is coated with the insulating layer 28 in a manner that is partially flush with the portion of the insulating layer 28, while the second colloid layer 162 completely covers the third colloid layer 163, and further extends to The third insulating layer 163 is coated in such a manner as to cover the insulating layer 28, as shown in FIG. 12(a) or 12(e), or the second colloid layer 162 is partially flush with the third colloid layer 163. The state shown in Fig. 12(b) to Fig. 12(d) and Fig. 12(f).

In another embodiment, the first colloid layer 161 and the third colloid layer 163 completely cover the insulating layer 28, that is, the first colloid layer 161 completely covers the insulating layer 28, and the third colloid layer 163 is completely coated on the first layer. The outer periphery of the colloid layer 161, thereby completely covering The insulating layer 28, and the second colloid layer 162 is partially flushed to cover the third colloid layer 163, as shown in Figs. 13(a) to 13(b).

In another embodiment, the first colloid layer 161 and the second colloid layer 162 are completely completely covered with the insulating layer 28, that is, the first colloid layer 161 completely covers the insulating layer 28, and the third colloid layer 163 is partially flushed. The first colloid layer 161 is coated, and the second colloid layer 162 completely covers the outer periphery of the first colloid layer 161 and the third colloid layer 163, thereby completely covering the insulating layer 28, as shown in FIGS. 14(a) to 14 (b) The state shown in the figure.

In another embodiment, the first colloid layer 161 completely covers the insulating layer 28, and the third colloid layer 163 is partially flushed to cover the first colloid layer 161, and the second colloid layer 162 is coated with the first colloid layer 161 or The third colloid layer 163 is partially flushed to coat the third colloid layer 163 or the first colloid layer 161 as shown in Figs. 15(a) to 15(d).

In another embodiment, the first colloid layer 161 is partially flush coated with the insulating layer 28, and the third colloid layer 163 completely covers the first colloid layer or partially coated while the second colloid layer 162 is as previously described. The third colloid layer may be completely coated and further extended to the side edge of the cladding insulating layer 28, or the second colloid layer 162 may partially cover the third colloid layer 163, as shown in FIGS. 16(a) to 16(r). Figure.

Method 2: The periphery of the collector layer is provided with an insulating layer

As shown in FIG. 17(a), the flexible solid-state lithium battery 10 capable of avoiding the external short-circuit problem mainly includes a first collector layer 12, a second collector layer 14, and a first interlayer. a plastic frame 16 between the collector layer 12 and the second collector layer 14 to form a surrounding area. The plastic frame 16 includes a first colloid layer 161 and a second colloid layer 162. The first colloid layer 161 and the first layer The collector layer 12 is bonded, and the second colloid layer 162 is bonded to the second collector layer 14. An electrochemical system layer 26 is disposed in the enclosing area, and the electrochemical system layer 26 includes a first active material layer 20, a second active material layer 24, and a first active material layer 20 and a second active material layer. In the 24 isolation layers 22, the first active material layer 20 is in contact with the first collector layer 12, and the second active material layer 24 is in contact with the second collector layer 14. At least one insulating layer 28 is disposed on the periphery of the first collector layer 12 and/or the second collector layer 14. Under such a design, when the flexible solid state lithium battery 10 is bent, it is possible to prevent the first collector layer 12 and the second collector layer 14 from being externally short-circuited due to contact. The first collector layer 12 and the second collector layer 14 may have different or substantially the same material composition.

As shown in FIG. 17(b), the plastic frame 16 may further include a third colloid layer 163 sandwiched between the first colloid layer 161 and the second colloid layer 162. In the flexible solid-state lithium battery 10 described above, the electrochemical system layer 26 completely accommodated in the enclosing area in the orthographic projection direction will be completely located in the first collector layer 12 and/or the second collector layer. In the region of 14, in other words, the orthographic projection area of the first active material layer 20 is smaller than the orthographic projection area of the first collector layer 12, and the orthographic projection area of the second active material layer 24 is smaller than the orthographic projection area of the second collector layer 14. .

Method 3: The insulating layer is disposed on the outer side wall of the plastic frame and extends to the periphery of the first collector layer and/or the second collector layer

As shown in the embodiments shown in FIGS. 18(a) to 18(c), the flexible solid state lithium battery 10 capable of avoiding the external short circuit problem mainly includes a first collector layer 12 and a second set. The electrical layer 14 is sandwiched between the first collector layer 12 and the second collector layer 14 to form a surrounding area. An electrochemical system layer 26 is disposed in the enclosing area, and the electrochemical system layer 26 includes a first active material layer 20, a second active material layer 24, and a first active material layer 20 and a second active material layer. In the 24 isolation layers 22, the first active material layer 20 is in contact with the first collector layer 12, and the second active material layer 24 is in contact with the second collector layer 14. At least one insulating layer 28 is disposed on the outer sidewall of the bezel 16 and extends to the periphery of the first collector layer 12 and/or the second collector layer 14. Under such a design, the first collector layer 12 and the second collector layer 14 are prevented from being externally short-circuited by contact when the flexible solid-state lithium battery 10 is bent.

Please refer to Fig. 18(a), which is a schematic diagram of an embodiment of the third method. In this embodiment, the insulating layer 28 is disposed on the outer sidewall of the bezel 16 and extends to the bottom surface a of the first collector layer 12. In FIGS. 18(b) to 18(c), the insulating layer 28 is further extended to the side b or the top surface c of the second collector layer 14.

Furthermore, the above-mentioned plastic frame 16 may further include a first colloid layer 161 and a second colloid layer 162. The first colloid layer 161 is bonded to the first collector layer 12, and the second colloid layer 162 and the second collector layer are electrically connected. The layer 14 is bonded, and the first colloid layer 161 and the second colloid layer 162 may have differences in material composition or are substantially the same. The plastic frame 16 is made of the first colloid When the layer 161 is combined with the second colloid layer 162, the above embodiments may have the aspects of Figs. 19(a) to 19(c). For example, in the 19th (a) diagram, the insulating layer 28 is mainly disposed on the outer side wall of the first colloid layer 161, and one end extends to the bottom surface a of the first collector layer 12, and the other end extends to the second colloid layer 162. In the 19th (b)th to 19th (c)th drawings, the insulating layer 28 is further extended to the side b or the top surface c of the second collector layer 14.

The plastic frame 16 may further include a third colloid layer 163 sandwiched between the first colloid layer 161 and the second colloid layer 162. When the plastic frame 16 is sequentially formed by the first colloid layer 161 / the third colloid layer 163 / the second colloid layer 162, the above embodiment will form as shown in Figs. 20(a) to 20(c). The picture is in the picture. Although the embodiment insulating layer 28 drawn in the 20th (a) drawing is disposed on the outer side wall of the first colloid layer 161, and one end extends to the third colloid layer 163, it is known to those skilled in the art that it can be extended to the first Dicolloid layer 162.

In a general lithium battery, a positive electrode or a negative electrode is formed by coating an active material layer on a collector layer and then performing a cutting and drying process, so that the active material layer of the positive electrode or the negative electrode has the same size as the collector layer, and Under the consideration of safety factors, the positive active material layer must be smaller than the negative active material layer design, that is, the positive electrode must be smaller than the negative electrode. The so-called safety factor is due to the large amount of lithium crystal branches caused by insufficient space of the negative electrode when lithium ions are inserted into the negative electrode. Further, the lithium crystal chip penetrates the separator and causes a short circuit problem of internal positive and negative electrode contact. However, in all of the above embodiments of the present disclosure, the first collector layer 12 may be a positive collector layer or a cathode collector layer, and the second collector layer 14 is corresponding to a cathode collector layer or a cathode collector layer. In other words, when the first collector layer 12 is a negative collector layer, the second collector layer 14 is a cathode collector layer, and there is no problem of the size of the collector layer required for safety reasons. This embodiment is completely different from the existing general lithium battery architecture.

Furthermore, in all of the above embodiments, a protective layer 30 may be formed or disposed on the outer surface of the first collector layer 12 and/or the second collector layer 14 of the flexible solid state lithium battery 10 to protect or The first collector layer 12 and/or the second collector layer 14 are supported, as shown in FIG. The protective layer 30 is disposed on the outer surface of the second collector layer 14 and is not shown in the figure.

In summary, the present invention is due to the first and second collector layers A small number of edges are provided with an insulating layer and various changes in the shape of the plastic frame structure to achieve the first and second collector layers of the flexible solid lithium battery after being bent, thereby avoiding the first 1. The external short circuit problem caused by the second collector layer being touched.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any changes or modifications of the features and spirits of the present invention should be included in the scope of the present invention.

Claims (27)

A battery structure comprising: a first collector layer; a second collector layer; a plastic frame for adhering the first collector layer and the second collector layer, the plastic frame, the first collector Forming a surrounding area with the second collector layer; an electrochemical system layer disposed in the enclosed area, the electrochemical system layer comprising a first active material layer, a second active material layer and a setting An isolation layer between the first active material layer and the second active material layer, the first active material layer is in contact with the first collector layer, and the second active material layer is in contact with the second collector layer; And at least one insulating layer disposed on a periphery of the first collector layer and/or the second collector layer, wherein the periphery comprises a side surface and/or upward and/or downward from the side surface An extended surface; characterized in that the plastic frame covers the insulating layer. The battery structure of claim 1, wherein the plastic frame comprises a first colloid layer and a second colloid layer, the first colloid layer is adhered to the first collector layer, and the second colloid layer and the first colloid layer The two collector layers are bonded, and the first colloid layer and/or the second colloid layer encapsulates the insulating layer. The battery structure of claim 2, wherein the plastic frame further comprises a third colloid layer interposed between the first colloid layer and the second colloid layer. The battery structure of claim 3, wherein the first colloid layer and the second colloid layer are better in adhesion to the different material than the third colloid layer. The battery structure of claim 3, wherein at least one of the first colloid layer, the second colloid layer and the third colloid layer coats the insulating layer. The battery structure of claim 1, wherein the electrochemical system layer is located within the first collector layer and the second collector layer in a right projection direction. The battery structure of claim 6, wherein the first active material layer has an orthographic projection area that is smaller than an orthographic projection area of the first collector layer. The battery structure of claim 6, wherein the front projection of the second active material layer The area is smaller than the orthographic projection area of the second collector layer. The battery structure according to claim 1, which is a flexible battery or a soft pack battery. The battery structure according to claim 1, wherein a surface of the first collector layer and/or the second collector layer is provided with a protective layer. A battery structure comprising: a first collector layer; a second collector layer; a plastic frame interposed between the first collector layer and the second collector layer to form a surrounding area, The plastic frame comprises a first colloid layer and a second colloid layer, the first colloid layer is adhered to the first collector layer, and the second colloid layer is adhered to the second collector layer; an electrochemical system layer Provided in the enclosed area, the electrochemical system layer includes a first active material layer, a second active material layer and an isolation layer disposed between the first active material layer and the second active material layer The first active material layer is in contact with the first collector layer, the second active material layer is in contact with the second collector layer, and at least one insulating layer is disposed on the first collector layer and/or a periphery of the second collector layer; wherein the periphery comprises a side surface and/or a surface extending upward and/or downward from the side surface. The battery structure of claim 11, wherein the plastic frame further comprises a third colloid layer, the third colloid layer being interposed between the first colloid layer and the second colloid layer. The battery structure of claim 12, wherein the first colloid layer and the second colloid layer are better in adhesion to the different material than the third colloid layer. The battery structure of claim 11, wherein the electrochemical system layer is located within the first collector layer and the second collector layer in a right projection direction. The battery structure of claim 14, wherein the first active material layer has an orthographic projection area that is smaller than an orthographic projection area of the first collector layer. The battery structure of claim 14, wherein the second active material layer has an orthographic projection area that is smaller than an orthographic projection area of the second collector layer. The battery structure according to claim 11, which is a flexible battery or a soft pack battery. The battery structure of claim 11, wherein a surface of the first collector layer and/or the second collector layer is provided with a protective layer. A battery structure comprising: a first collector layer; a second collector layer; a plastic frame interposed between the first collector layer and the second collector layer to form a surrounding area; And an electrochemical system layer disposed in the enclosing area, the electrochemical system layer comprising a first active material layer, a second active material layer, and the first active material layer and the second active material An isolation layer between the layers, the first active material is in contact with the first collector layer, and the second active material layer is in contact with the second collector layer; wherein the outer sidewall surface of the plastic frame is provided with an insulating layer, The insulating layer extends to a periphery of the first collector layer and/or the second collector layer; wherein the periphery comprises a side surface and/or a surface extending upward and/or downward from the side surface. The battery structure of claim 19, wherein the electrochemical system layer is located within the first collector layer and the second collector layer in a right projection direction. The battery structure of claim 20, wherein the first active material layer has an orthographic projection area that is smaller than an orthographic projection area of the first collector layer. The battery structure of claim 20, wherein the second active material layer has an orthographic projection area that is smaller than an orthographic projection area of the second collector layer. The battery structure of claim 19, wherein the plastic frame comprises a first colloid layer and a second colloid layer, the first colloid layer is adhered to the first collector layer, and the second colloid layer is The second collector layer is bonded. The battery structure of claim 23, further comprising a third colloid layer, the third colloid layer being sandwiched between the first colloid layer and the second colloid layer. The battery structure of claim 19, wherein the first colloid layer and the second The colloid layer is better in adhesion to the different material than the third colloid layer. The battery structure according to claim 19, which is a flexible battery or a soft pack battery. The battery structure according to claim 19, wherein a surface of the first collector layer and/or the second collector layer is provided with a protective layer.