Separating plate and battery

Abstract

The isolation plate comprises a first part and a second part which are arranged in parallel, the first part is used for connecting a battery cell and comprises first functional layers and a first base layer, and the first functional layers are arranged on the two opposite sides of the first base layer in the thickness direction of the first base layer. The first functional layer comprises a first heat conduction layer and a first elastic buffer layer, the first heat conduction layer is attached to the first base layer, and the first elastic buffer layer is located on the side, away from the first base layer, of the first heat conduction layer. Heat generated by the battery cells can be transmitted to other parts of the first isolation plate through the first heat conduction layer and is dissipated, so that heat accumulation between the adjacent battery cells can be reduced, and the risks of fire and explosion of the battery are further reduced; and on the other hand, when the battery is subjected to external damage such as impact, falling and the like, the first elastic buffer layer can absorb impact force through compression deformation, so that the probability of collision damage of the battery cell is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an isolation plate and a battery. Background Art

[0002] The cells of the internally connected batteries are separated by isolation plates. In the related art, the isolation plates have a weak ability to absorb shocks. When the batteries are subjected to external damage such as impact or falling, the internally connected batteries are easily damaged by the impact. In addition, the batteries generate heat during use, and the heat between adjacent batteries is difficult to dissipate in time, resulting in the risk of battery fire and explosion due to excessive local temperature. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an isolation plate that can reduce the damage to the battery when it is subjected to external damage such as impact and falling, and can also reduce the risk of fire and explosion caused by heating of the battery.

[0004] The utility model also provides a battery using the isolation plate.

[0005] According to the first embodiment of the utility model, the isolation plate includes a first part and a second part arranged in parallel, the first part is used to connect the battery core, and the first part includes:

[0006] First functional layer;

[0007] A first base layer, wherein the first functional layer is disposed on two opposite sides of the first base layer along its thickness direction;

[0008] The first functional layer includes a first heat-conducting layer and a first elastic buffer layer. The first heat-conducting layer is bonded to the first base layer. The first elastic buffer layer is located on a side of the first heat-conducting layer away from the first base layer.

[0009] The isolation plate according to the embodiment of the utility model has at least the following beneficial effects:

[0010] The heat generated by the battery cells can be transferred to other parts of the first isolation plate through the first heat conductive layer and dissipated, which can reduce the heat accumulation between adjacent battery cells and thereby reduce the risk of battery fire and explosion; on the other hand, when the battery is subjected to external damage such as impact or falling, the first elastic buffer layer can absorb the impact force through compression deformation, thereby reducing the probability of collision damage to the battery cells; in addition, the first isolation plate adopts a segmented design, with the first part and the second part arranged in parallel, so that when the total thickness of the first isolation plate is constant, the first elastic buffer layer can be set thicker, thereby having better buffering capacity, or, when the thickness of the first elastic buffer layer is constant, the total thickness of the first isolation plate can be thinner, thereby avoiding the first isolation plate occupying too much space, thereby resulting in a loss of energy density.

[0011] In other embodiments of the present invention, the first functional layer further includes a second heat-conducting layer, which is disposed between the first heat-conducting layer and the first elastic buffer layer, and is respectively bonded to the first heat-conducting layer and the first elastic buffer layer.

[0012] In other embodiments of the present invention, one of the first heat-conducting layer and the second heat-conducting layer is made of heat-conducting silica gel, and the other is made of porous ceramics.

[0013] In other embodiments of the present invention, the isolation plate includes at least one of the following solutions:

[0014] The first heat-conducting layer is made of heat-conducting silica gel or porous ceramics;

[0015] The first elastic buffer layer is made of polypropylene or polyurethane;

[0016] The first base layer is made of aluminum.

[0017] In other embodiments of the present invention, the thickness of the first portion is less than or equal to the thickness of the second portion.

[0018] In other embodiments of the present invention, the second part includes a second base layer and a second functional layer, and the second functional layer is disposed on opposite sides of the second base layer along its thickness direction, wherein the first base layer and the second base layer are connected as an integral structure.

[0019] The battery according to the second embodiment of the present utility model comprises:

[0020] The isolation plate as described in the first embodiment;

[0021] Two groups of battery cells are arranged on opposite sides of the isolation plate along the thickness direction of the isolation plate, and are respectively attached to the first elastic buffer layer on the same side;

[0022] The outer film is coated on the outer side of the battery core and the second part.

[0023] According to the third embodiment of the utility model, the isolation plate comprises:

[0024] The third functional layer;

[0025] A third base layer, wherein the third functional layer is disposed on two opposite sides of the third base layer along its thickness direction;

[0026] Among them, the third functional layer includes a third heat-conducting layer, a fourth heat-conducting layer, a second elastic buffer layer and a connecting layer. The third heat-conducting layer, the fourth heat-conducting layer, the second elastic buffer layer and the connecting layer are stacked in sequence in a direction away from the third base layer, and the third heat-conducting layer is bonded to the third base layer.

[0027] In other embodiments of the present invention, the isolation plate includes at least one of the following solutions:

[0028] One of the third heat-conducting layer and the fourth heat-conducting layer is made of heat-conducting silica gel, and the other is made of porous ceramics;

[0029] The second elastic buffer layer is made of polyurethane or polyurethane;

[0030] The connecting layer is made of polypropylene;

[0031] The third base layer is made of aluminum.

[0032] The battery according to the fourth embodiment of the present utility model comprises:

[0033] The isolation plate as described in the third embodiment;

[0034] Two groups of battery cells are arranged on opposite sides of the isolation plate along the thickness direction of the isolation plate, and are respectively attached to a portion of the connection layer on the same side;

[0035] The outer film is coated on the battery core and other parts of the outer side of the connecting layer that are not in contact with the battery core.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0038] Figure 1 It is a cross-sectional schematic diagram of the first isolation plate in the first embodiment of the utility model, and the cross-sectional plane is parallel to the thickness direction of the isolation plate;

[0039] Figure 2 A cross-sectional schematic diagram of batteries in series connected with the first isolation plate in the first embodiment of the utility model;

[0040] Figure 3 It is a cross-sectional schematic diagram of the second isolation plate in the third embodiment of the utility model, and the cross-sectional plane is parallel to the thickness direction of the isolation plate;

[0041] Figure 4 It is a cross-sectional schematic diagram of the internal series batteries using the second isolation plate in the third embodiment of the utility model.

[0042] Reference numerals:

[0043] A first isolation plate 100, a first functional layer 110, a first heat-conducting layer 111, a first elastic buffer layer 112, a second heat-conducting layer 113, a first base layer 120, a second functional layer 130, and a second base layer 140;

[0044] A second isolation plate 200, a third functional layer 210, a third heat conducting layer 211, a fourth heat conducting layer 212, a second elastic buffer layer 213, a second connection layer 214, and a third base layer 220;

[0045] Battery cell 300;

[0046] Mantle 400. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of the first or the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0050] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model based on the specific content of the technical solution.

[0051] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] As mentioned above, adjacent batteries in the inner series battery are separated by an isolation plate. If the isolation plate does not have a certain shock absorption performance, the adjacent batteries are easy to collide with each other and be damaged when the battery is subjected to external damage such as impact or falling. In addition, the isolation plate in the related art is difficult to transfer heat, and heat is easy to accumulate between batteries, causing battery fire and explosion. Based on this, the utility model proposes an isolation plate that can absorb the impact force when the battery is subjected to external damage such as impact or falling, and can disperse the heat between batteries. The following will be explained in conjunction with specific embodiments and drawings.

[0053] The first embodiment of the utility model provides an isolation plate, referring to Figure 1 , Figure 1 1 is a cross-sectional schematic diagram of the separator in the first embodiment, and the cross-sectional plane is parallel to the thickness direction of the separator. For the convenience of distinction, the separator in this embodiment is named as the first separator 100. As shown in the figure, the first separator 100 includes a first part and a second part arranged in parallel. The meaning of the parallel arrangement is that the first part and the second part are not stacked in the thickness direction, wherein the first part is used to connect the battery cell 300. For the convenience of observation, Figure 1 The first part and the second part are roughly indicated by the dotted boxes. Specifically, the middle dotted box indicates the first part, and the dotted boxes on both sides indicate the second part.

[0054] The first part includes a first functional layer 110 and a first base layer 120. The first base layer 120 mainly plays a supporting and heat dissipating role, and the first functional layer 110 plays a buffering and heat conducting role. Along the thickness direction, the first functional layer 110 is arranged on both sides of the first base layer 120. Figure 1As shown in FIG. 1 , the first functional layer 110 is disposed on both the upper and lower sides of the first base layer 120. In some embodiments, the first functional layers 110 on opposite sides of the first base layer 120 are the same, so the first functional layer 110 on one side is mainly described.

[0055] The first functional layer 110 specifically includes a first thermal conductive layer 111 and a first elastic buffer layer 112. The first thermal conductive layer 111 is bonded to the first base layer 120. In this way, the heat generated by the battery cell can be transferred to other parts of the first isolation plate 100 through the first thermal conductive layer 111 and dissipated, thereby reducing heat accumulation between adjacent battery cells and thereby reducing the risk of battery fire and explosion.

[0056] On the other hand, the first elastic buffer layer 112 is located on the side of the first heat-conducting layer 111 away from the first base layer 120, and is used to fit with the battery cell. The first elastic buffer layer 112 can undergo elastic deformation. In this way, when the battery is subjected to external damage such as impact or falling, the first elastic buffer layer 112 can absorb the impact force by compressing and deforming, thereby reducing the probability of collision damage to the battery cell. The first elastic buffer layer 112 is arranged on the side of the first heat-conducting layer 111 close to the battery cell and fits with the battery cell, so that the impact force can be absorbed in time during impact, and the protection effect is better. It should be noted that the aforementioned "the first elastic buffer layer 112 is located on the side of the first heat-conducting layer 111 away from the first base layer 120" is used to describe the relative position relationship between the first elastic buffer layer 112 and the first heat-conducting layer 111. In some specific embodiments, the first elastic buffer layer 112 is directly connected to the first heat-conducting layer 111. In other specific embodiments, the first elastic buffer layer 112 and the first heat-conducting layer 111 are separated by other layers, such as the second heat-conducting layer 113 described below.

[0057] In addition, the first isolation plate 100 of the present embodiment adopts a segmented design, with the first part and the second part arranged in parallel. In this way, when the total thickness of the first isolation plate 100 is constant, the first elastic buffer layer 112 can be set thicker, thereby having better buffering capacity, or, when the thickness of the first elastic buffer layer 112 is constant, the total thickness of the first isolation plate 100 can be thinner, thereby avoiding the first isolation plate 100 occupying too much space, thereby causing a loss of energy density.

[0058] On the basis of the first embodiment, in some embodiments of the utility model, the first heat-conducting layer 111 is made of elastic material, so that the first heat-conducting layer 111 can not only play a role in heat conduction, but also play a certain role in buffering and shock absorption, and cooperate with the first elastic buffer layer to further improve the safety performance of the battery core. In some specific embodiments, the first heat-conducting layer 111 is made of thermally conductive silicone.

[0059] On the basis of the first embodiment, in some embodiments of the utility model, the first heat-conducting layer 111 is made of a porous ceramic material. The loose and porous ceramic has a larger specific surface area, which is easy to disperse heat, so that the heat is transferred to other parts of the first isolation plate 100 more quickly and evenly, thereby reducing the risk of battery fire and explosion caused by excessive temperature when the battery is impacted. On the other hand, porous ceramic materials have good high temperature tolerance. Specifically, porous ceramics can be applied to the side of the first base layer 120 by spraying. It should be noted that the thermal conductivity of porous ceramics is related to factors such as the porosity, pore shape, and number of pores inside it. By selecting suitable porous ceramic materials, the effect of heat conduction can be achieved.

[0060] Based on the first embodiment, refer to Figure 1 In some embodiments of the present invention, the first functional layer 110 also includes a second heat-conducting layer 113, which is disposed between the first heat-conducting layer 111 and the first elastic buffer layer 112, and is respectively bonded to the first heat-conducting layer 111 and the first elastic buffer layer 112, thereby ensuring a heat transfer effect.

[0061] When the first functional layer 110 also includes a second heat-conducting layer 113, in some embodiments of the utility model, the first heat-conducting layer 111 is made of heat-conducting silicone, and the second heat-conducting layer 113 is made of porous ceramic material. Specifically, the porous ceramic can be applied to the side of the first heat-conducting layer 111 away from the first base layer 120 by spraying. In this embodiment, the first heat-conducting layer 111 can not only play a role in heat conduction, but also play a certain role in buffering and shock absorption. The safety performance of the battery cell can be further improved in conjunction with the first elastic buffer layer. On the other hand, loose and porous ceramics have a larger specific surface area, which is easy to disperse heat, so that heat can be transferred to other parts of the first isolation plate 100 more quickly and evenly, thereby reducing the risk of battery fire and explosion caused by excessive temperature when the battery is impacted, and the porous ceramic material has good high temperature tolerance.

[0062] When the first functional layer 110 further includes the second heat-conducting layer 113 , in other embodiments of the present invention, the first heat-conducting layer 111 is made of porous ceramic material, and the second heat-conducting layer 113 is made of heat-conducting silica gel, which has the same effect as the aforementioned embodiments.

[0063] On the basis of the first embodiment, in some embodiments of the present invention, the first elastic buffer layer 112 is made of polypropylene or polyurethane, which has good elastic deformation ability and can better absorb the impact force when the battery cell faces impact.

[0064] On the basis of the first embodiment, in some embodiments of the present invention, the first base layer 120 is made of aluminum, which can play a certain supporting role and also transfer heat.

[0065] Based on the first embodiment, refer to Figure 1 In some embodiments of the present invention, the thickness of the first part is less than or equal to the thickness of the second part. In this way, when the total thickness of the first isolation plate 100 is constant, it can be avoided that the first isolation plate 100 occupies too much space, thereby causing a loss of energy density. Specifically, the difference between the thickness of the first part and the thickness of the second part is no more than 10 μm, ensuring that the first part has sufficient thickness, thereby ensuring the buffering capacity of the first part.

[0066] Based on the first embodiment, refer to Figure 1 In some embodiments of the present invention, the second part includes a second base layer 140 and a second functional layer 130. Along the thickness direction, the second functional layer 130 is disposed on both sides of the second base layer 140. In some embodiments, the second functional layers 130 on the two sides of the second base layer 140 are the same, so the second functional layer 130 on one side is mainly described.

[0067] The second functional layer 130 includes a connection layer, which is named as a first connection layer for easy distinction. The first connection layer is attached to the second base layer 140 and to the outer film of the battery during battery packaging. The first connection layer can be melted with the outer film at a certain temperature to increase the sealing ability. Specifically, the first connection layer can be polypropylene.

[0068] In this embodiment, the first base layer 120 and the second base layer 140 are connected as an integral structure, and the first base layer 120 and the second base layer 140 are both made of a heat-conducting metal material, so that the heat transferred by the first heat-conducting layer 111 and / or the second heat-conducting layer 113 can be dispersed through the first base layer 120 and the second base layer 140, thereby reducing the heat accumulated between the battery cells. Specifically, the first base layer 120 and the second base layer 140 are made of aluminum.

[0069] The second embodiment of the utility model provides a battery, referring to Figure 2 , including two groups of battery cells 300, a jacket film 400 and the separator 100 in the aforementioned first embodiment. It should be noted that in order to more clearly show the hierarchical structure of the separator, Figure 2 The ratio of the first isolation plate 100 to the battery cell 300 is adjusted, which does not represent the actual ratio.

[0070] The two groups of battery cells 300 are arranged on opposite sides of the first isolation plate 100 along the thickness direction of the first isolation plate 100, and are respectively adhered to the first elastic buffer layer 112 on the same side. In this way, when the battery cells are impacted or vibrated, the first isolation plate 100 can be used to reduce shock, thereby reducing damage to the battery cells 300; at the same time, the heat generated by the battery cells 300 can be conducted to the second part through the first part of the first isolation plate 100 for dissipation, thereby reducing the risk of fire in the battery cells 300; in addition, since the first part and the second part are arranged in parallel, the first part can have a sufficient thickness to ensure its buffering capacity without increasing the overall thickness of the first isolation plate 100, thereby avoiding the first isolation plate 100 occupying too much space and losing energy density.

[0071] The outer film 400 is coated on the outer side of the battery core 300 and the second part, so as to encapsulate the battery core. The outer film 400 may be an aluminum-plastic film.

[0072] The third embodiment of the utility model provides an isolation plate, referring to Figure 3 , Figure 3 2 is a schematic cross-sectional view of the isolation plate in the first embodiment. The cross-sectional surface is parallel to the thickness direction of the isolation plate. For easy distinction, the isolation plate in this embodiment is named as the second isolation plate 200.

[0073] The second isolation plate 200 includes a third functional layer 210 and a third base layer 220. The third base layer 220 mainly plays a supporting and heat dissipating role, and the third functional layer 210 plays a buffering and heat conducting role. Along the thickness direction, the third base layer 220 is provided with a third functional layer 210 on both sides of the third base layer 220. Figure 3 As shown in FIG. 1 , the third functional layer 210 is disposed on both the upper and lower sides of the third base layer 220. In some embodiments, the third functional layers 210 on two opposite sides of the third base layer 220 are the same, so the third functional layer 210 on one side is mainly described.

[0074] The third functional layer 210 specifically includes a third heat-conducting layer 211, a fourth heat-conducting layer 212, a second elastic buffer layer 213 and a connecting layer. For the sake of distinction, the connecting layer of the third functional layer 210 is named as a second connecting layer 214. The third heat-conducting layer 211, the fourth heat-conducting layer 212, the second elastic buffer layer 213 and the second connecting layer 214 are sequentially stacked in a direction away from the third base layer 220. For example, Figure 3Taking the third functional layer 210 located on the upper side of the third base layer 220 as an example, the third heat-conducting layer 211, the fourth heat-conducting layer 212, the second elastic buffer layer 213 and the second connection layer 214 are stacked in sequence from bottom to top. In this embodiment, the third heat-conducting layer 211 is attached to the third base layer 220, so that the heat generated by the battery cell can be transferred to other parts of the second isolation plate 200 through the first heat-conducting layer 111 and dissipated, so that the heat accumulation between adjacent battery cells can be reduced, thereby reducing the risk of battery fire and explosion. On the other hand, when the battery is subjected to external damage such as impact and falling, the second elastic buffer layer 213 can absorb the impact force by compression deformation, thereby reducing the probability of collision damage to the battery cell. The second elastic buffer layer 213 is arranged on the side closer to the battery cell relative to the third heat-conducting layer 211 and the fourth heat-conducting layer 212, so that the impact force can be absorbed in time during impact, and the protection effect is better.

[0075] On the basis of the third embodiment, in some embodiments of the utility model, the third heat-conducting layer 211 is made of an elastic material, such as a heat-conducting silicone. In this way, the third heat-conducting layer 211 can not only play a role in heat conduction, but also play a certain role in buffering and shock absorption. In conjunction with the first elastic buffer layer, the safety performance of the battery cell can be further improved. On this basis, the fourth heat-conducting layer 212 is made of a porous ceramic material. Specifically, the porous ceramic can be applied to the side of the third heat-conducting layer 211 away from the third base layer 220 by spraying. Loose and porous ceramics have a larger specific surface area and are easy to disperse heat, so that heat is transferred to other parts of the second isolation plate 200 more quickly and evenly, thereby reducing the risk of battery fire and explosion caused by excessive temperature when the battery is impacted, and the porous ceramic material has good high temperature tolerance.

[0076] In some other embodiments of the present invention, the third heat-conducting layer 211 is made of porous ceramic material, and the fourth heat-conducting layer 212 is made of heat-conducting silica gel, which has the same effect as the above-mentioned embodiments.

[0077] On the basis of the third embodiment, in some embodiments of the present invention, the second elastic buffer layer 213 is made of polypropylene or polyurethane, which has good elastic deformation ability and can better absorb the impact force when the battery cell faces impact.

[0078] On the basis of the third embodiment, in some embodiments of the present invention, the third base layer 220 is made of aluminum, which can play a certain supporting role and also transfer heat.

[0079] On the basis of the third embodiment, in some embodiments of the utility model, the second connection layer 214 is attached to the outer film of the battery during battery packaging, and the second connection layer 214 can be melted with the outer film at a certain temperature, thereby increasing the sealing ability. Specifically, the second connection layer 214 can be polypropylene. It should be noted that when the second elastic buffer layer 213 is also polypropylene, the second elastic buffer layer 213 and the second connection layer 214 can form an integrated structure.

[0080] The fourth embodiment of the utility model provides a battery, referring to Figure 4 , including two groups of battery cells 300, a jacket film 400 and the separator 100 in the aforementioned third embodiment. It should be noted that in order to more clearly show the hierarchical structure of the separator, Figure 2 The ratio of the first isolation plate 100 to the battery cell 300 is adjusted, which does not represent the actual ratio.

[0081] The two groups of battery cells 300 are arranged on opposite sides of the second isolation plate 200 along the thickness direction of the second isolation plate 200, and are respectively adhered to the second connecting layer 214 on the same side. In this way, when the battery cells are impacted or vibrated, the second isolation plate 200 can provide shock absorption, thereby reducing damage to the battery cells 300. At the same time, the heat generated by the battery cells 300 can be conducted through the adhered parts to other parts of the second isolation plate 200 for dissipation, thereby reducing the risk of fire in the battery cells 300.

[0082] The outer film 400 covers the battery cell 300 and other parts of the outer side of the second connection layer 214 that are not in contact with the battery cell 300 , so as to encapsulate the battery cell. The outer film 400 may be an aluminum-plastic film.

[0083] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. An isolation plate, characterized in that: It comprises a first part and a second part arranged in parallel, wherein the first part is used to connect the battery cell, and the first part comprises: First functional layer; A first base layer, wherein the first functional layer is disposed on two opposite sides of the first base layer along its thickness direction; The first functional layer includes a first heat-conducting layer and a first elastic buffer layer. The first heat-conducting layer is bonded to the first base layer. The first elastic buffer layer is located on a side of the first heat-conducting layer away from the first base layer.

2. The isolation plate according to claim 1, characterized in that The first functional layer further includes a second heat-conducting layer, which is disposed between the first heat-conducting layer and the first elastic buffer layer and is respectively bonded to the first heat-conducting layer and the first elastic buffer layer.

3. The isolation plate according to claim 2, characterized in that One of the first heat-conducting layer and the second heat-conducting layer is made of heat-conducting silica gel, and the other is made of porous ceramics.

4. The isolation plate according to claim 1, characterized in that The isolation plate includes at least one of the following solutions: The first heat-conducting layer is made of heat-conducting silica gel or porous ceramics; The first elastic buffer layer is made of polypropylene or polyurethane; The first base layer is made of aluminum.

5. The isolation plate according to claim 1, characterized in that The thickness of the first portion is less than or equal to the thickness of the second portion.

6. The isolation plate according to claim 1, characterized in that The second part includes a second base layer and a second functional layer, and the second functional layer is disposed on two opposite sides of the second base layer along its thickness direction, wherein the first base layer and the second base layer are connected to form an integral structure.

7. A battery, characterized in that include: The insulation board according to any one of claims 1 to 6; Two groups of battery cells are arranged on opposite sides of the isolation plate along the thickness direction of the isolation plate, and are respectively attached to the first elastic buffer layer on the same side; The outer film is coated on the outer side of the battery core and the second part.

8. A separator, characterized in that include: The third functional layer; A third base layer, wherein the third functional layer is disposed on two opposite sides of the third base layer along its thickness direction; Among them, the third functional layer includes a third heat-conducting layer, a fourth heat-conducting layer, a second elastic buffer layer and a connecting layer. The third heat-conducting layer, the fourth heat-conducting layer, the second elastic buffer layer and the connecting layer are stacked in sequence in a direction away from the third base layer, and the third heat-conducting layer is bonded to the third base layer.

9. The isolation plate according to claim 8, characterized in that The isolation plate includes at least one of the following solutions: One of the third heat-conducting layer and the fourth heat-conducting layer is made of heat-conducting silica gel, and the other is made of porous ceramics; The second elastic buffer layer is made of polyurethane or polyurethane; The connecting layer is made of polypropylene; The third base layer is made of aluminum.

10. A battery, characterized in that include: The isolation panel according to claim 8 or 9; Two groups of battery cells are arranged on opposite sides of the isolation plate along the thickness direction of the isolation plate, and are respectively attached to a portion of the connection layer on the same side; The outer film is coated on the battery core and other parts of the outer side of the connecting layer that are not in contact with the battery core.

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