Core package assembly and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a core cladding assembly and a battery, the core cladding assembly comprises a core cladding body, an insulating part and a heat conduction part, the insulating part is coated on the core cladding body, the heat conduction part is attached to the insulating part, the heat conduction part is provided with a first heat conduction part and a second heat conduction part, the first heat conduction part is arranged corresponding to the bottom surface of the core cladding body, and the second heat conduction part is arranged corresponding to the bottom surface of the core cladding body. The second heat conduction part is arranged corresponding to the side surface of the core cladding body. The core package assembly can quickly transfer heat to the bottom wall of the shell of the battery, so that the heat dissipation efficiency of the core package assembly is improved, the internal and external temperature difference of the battery is reduced, and the cycle life of the battery is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a core pack assembly and a battery. Background Art

[0002] As the market demand for fast-charging batteries continues to increase, the heat generated by fast-charging batteries during the charging and discharging process has also increased dramatically. Since the existing battery cells are coated with an insulating film on the outside of the core package body, and a bottom support sheet is provided at the bottom of the core package body, and multiple batteries are grouped to form a battery pack, the heat dissipation device of the battery pack (such as a cold plate) is usually located below the outer shell. The structure of the existing battery will cause the heat dissipation device in the battery pack to significantly cool the outer surface of the battery (i.e., the outer shell) during the charging and discharging process, and the cooling effect on the inside of the battery (i.e., the core package body inside the battery) is relatively small. This phenomenon will cause the temperature difference between the inside and outside of the battery to become larger, resulting in a decrease in the battery cycle life. Utility Model Content

[0003] The first purpose of the present utility model is to provide a core pack assembly that can quickly transfer heat to the bottom wall of the battery shell, thereby improving the heat dissipation efficiency of the core pack assembly, which is beneficial to reducing the temperature difference between the inside and outside of the battery, thereby extending the cycle life of the battery.

[0004] A second object of the present invention is to provide a battery having a core pack assembly with high heat dissipation efficiency, a small temperature difference between the inside and outside of the battery, and a long cycle life.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The utility model discloses a core package assembly, comprising: a core package body; an insulating member, the insulating member is coated on the core package body; a heat-conducting member, the heat-conducting member is arranged in contact with the insulating member, and the heat-conducting member has a first heat-conducting part and a second heat-conducting part, the first heat-conducting part is arranged corresponding to the bottom surface of the core package body, and the second heat-conducting part is arranged corresponding to the side surface of the core package body.

[0007] In some embodiments, the side surfaces of the core package body include two first side surfaces and two second side surfaces, the area of ​​the first side surfaces is larger than the area of ​​the second side surfaces, and the second heat conducting portion is provided corresponding to at least one of the first side surfaces.

[0008] In some embodiments, the side surfaces of the core package body include two first side surfaces and two second side surfaces, the two first side surfaces are spaced apart along the first direction, the two second side surfaces are spaced apart along the second direction, and the area of ​​the first side surfaces is larger than that of the second side surfaces; the insulating part includes a first fitting portion, a second fitting portion and a connecting portion, the first fitting portion is fitted to one of the first side surfaces of the core package body, and the second fitting portion is fitted to the other first side surface of the core package body; the connecting portion is fitted to the bottom surface of the core package body, and the two sides of the connecting portion opposite to each other along the first direction are respectively connected to the first fitting portion and the second fitting portion.

[0009] In some specific embodiments, the insulating member further includes two first side wings and two second side wings, wherein: the two first side wings are spaced apart along the second direction and connected to both sides of the first fitting portion along the second direction; the two second side wings are spaced apart along the second direction and connected to both sides of the second fitting portion along the second direction.

[0010] In some specific embodiments, the second heat conducting portion is bonded to the second bonding portion, the difference between the length of the first bonding portion along the third direction and the length of the second bonding portion along the third direction is 2mm-10mm, and the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

[0011] In some more specific embodiments, the insulating part is an integrally formed part, and bending marks are provided between the first fitting part and the connecting part, between the second fitting part and the connecting part, between the first fitting part and the first side wing, and between the second fitting part and the second side wing.

[0012] In some specific embodiments, the core package assembly further includes a bottom support member connected to a side of the connecting portion facing away from the core package body.

[0013] In some more specific embodiments, a positioning structure is provided between the bottom supporting member and the connecting portion.

[0014] The utility model also discloses a battery, comprising a shell and the core package assembly mentioned above, wherein the number of the core package assembly is at least one.

[0015] In some embodiments, the outer shell includes a shell body and a top cover assembly, the shell body is provided with an opening, the top cover assembly is used to seal the opening, the core package assembly is installed in the shell body, and the end of the insulating part of the core package assembly away from the bottom of the shell body is connected to the top cover assembly.

[0016] The core pack assembly of the present invention has the following beneficial effects: the core pack body is provided with a heat conducting member on the outside of the insulating member, the heat conducting member including a first heat conducting portion provided corresponding to the ground of the core pack body and a second heat conducting portion provided corresponding to the side of the core pack body. During actual operation, the heat generated by the core pack body can not only be directly transferred to the bottom wall of the shell through the first heat conducting portion at the bottom and removed by the heat dissipation device, but can also be quickly transferred to the first heat conducting portion and the side wall of the shell under the conduction of the second heat conducting portion. The first heat conducting portion and the side wall of the shell can both transfer the heat of the core pack body to the bottom wall of the battery shell, and the heat dissipation device at the bottom of the shell can remove the heat. Thus, during actual operation, the additional heat conducting member can quickly transfer the heat generated by the core pack body during operation to the bottom wall of the battery shell, and then the core pack body and the shell can be quickly cooled under the cooling effect of the heat dissipation device, which is beneficial to reducing the temperature difference between the inside and outside of the battery (i.e., the temperature difference between the shell and the core pack body), thereby extending the cycle life of the battery.

[0017] The battery of this utility model has the following beneficial effects: Due to the aforementioned core package assembly, after the core package assembly is inserted into the shell, gravity compresses the first heat-conducting portion of the heat-conducting element against the shell, tightly fitting it. The second heat-conducting portion conducts heat from the sidewalls of the core package body to the first heat-conducting portion and the sidewalls of the shell, ultimately converging on the bottom wall of the shell. The bottom wall of the shell is cooled by the heat dissipation device, thereby minimizing the temperature difference between the inside and outside of the battery and extending its cycle life.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the exploded structure of the core package assembly of the present invention;

[0020] Figure 2 This is a schematic diagram of the expanded structure of the insulating member of the core package assembly of the present invention;

[0021] Figure 3 This is a structural schematic diagram of the bottom support member of the core package assembly of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the battery of the present utility model;

[0023] Figure 5 It is a cross-sectional view of the battery of the present utility model;

[0024] Figure 6 yes Figure 5 A partial enlarged view of the structure shown;

[0025] Figure 7 It is a schematic diagram of the exploded structure of the battery of an embodiment of the present utility model.

[0026] Reference numerals:

[0027] 100. Core package assembly; 110. Core package body; 120. Insulating member; 121. First fitting portion; 122. Second fitting portion; 123. Connecting portion; 1231. Second positioning hole; 124. First side wing; 125. Second side wing; 130. Heat conducting member; 131. First heat conducting portion; 132. Second heat conducting portion; 140. Bottom supporting member; 141. First positioning hole; 200. Shell; 210. Shell body; 220. Top cover assembly; 221. Top cover body; 222. Top cover patch; 223. Tab connecting piece; 230. Protective film. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended solely to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the drawings only depict portions of the present invention, not all structures. In the description of the present invention, unless otherwise specified or limited, the terms "connected," "connected," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; internal communication between two components; or interaction between two components. A person skilled in the art will understand the specific meanings of these terms in the present invention. In the present invention, unless otherwise specified or limited, "above" or "below" a first feature may include direct contact between the first and second features, or may include contact between the first and second features not being in direct contact but through another feature between them. Furthermore, "above," "above," and "above" a first feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the first feature is at a higher level than the second feature. The first feature being "below," "below," and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature. In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are intended only to facilitate description and simplify operation, 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. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first" and "second" are merely used to distinguish in the description and do not have any special meaning.

[0029] Example 1:

[0030] The utility model discloses a core package assembly 100, referring to Figure 5-7 As shown, the core pack assembly 100 is installed inside the battery, and the battery has a shell 200. The core pack assembly 100 disclosed in this embodiment is installed inside the shell 200. In actual operation, the battery is usually placed on a heat dissipation device (such as a cold plate), and the bottom wall of the shell 200 is in contact with the heat dissipation device. Figure 1 As shown, the core package assembly 100 includes a core package body 110, an insulating member 120 and a heat-conducting member 130. The insulating member 120 is covered on the core package body 110, and the heat-conducting member 130 is arranged in contact with the insulating member 120. The heat-conducting member 130 has a first heat-conducting portion 131 and a second heat-conducting portion 132. The first heat-conducting portion 131 is arranged corresponding to the bottom surface of the core package body 110, and the second heat-conducting portion 132 is arranged corresponding to the side surface of the core package body 110. It can be understood that the core package body 110 of this embodiment is provided with a heat conducting part 130 on the outside of the insulating part 120. The heat conducting part 130 includes a first heat conducting part 131 corresponding to the bottom surface of the core package body 110 and a second heat conducting part 132 corresponding to the side surface of the core package body 110. During actual operation, the heat generated by the operation of the core package body 110 can not only be directly transferred to the bottom wall of the shell 200 through the first heat conducting part 131 at the bottom and taken away through the heat dissipation device, but can also be quickly transferred to the first heat conducting part 131 and the side wall of the shell 200 under the conduction of the second heat conducting part 132. The first heat conducting part 131 and the side wall of the shell 200 can both transfer the heat of the core package body 110 to the bottom wall of the shell 200 of the battery, and the heat dissipation device at the bottom of the shell 200 can take away the heat. Therefore, during actual operation, the additional heat conductor 130 can quickly transfer the heat generated by the core package body 110 during operation to the bottom wall of the battery shell 200, and then achieve rapid cooling of the core package body 110 and the shell 200 under the cooling effect of the heat dissipation device, which is beneficial to reducing the temperature difference between the inside and outside of the battery (that is, the temperature difference between the shell 200 and the core package body 110), thereby extending the cycle life of the battery.

[0031] refer to Figure 1As shown, the side surfaces of the core package body 110 include two first side surfaces and two second side surfaces. The two first side surfaces are spaced apart along a first direction, and the two second side surfaces are spaced apart along a second direction. The area of ​​the first side surface is larger than that of the second side surface, and the second heat conducting portion 132 is provided corresponding to at least one of the first side surfaces. It is understood that in actual operation, since the first side surfaces of the core package body 110 have a relatively large area, providing the second heat conducting portion 132 corresponding to the first side surface allows heat generated during operation of the core package body 110 to be quickly transferred to the second heat conducting portion 132, which is then transferred from the second heat conducting portion 132 to the sidewalls of the housing 200 and the first heat conducting portion 131, thereby improving the heat dissipation effect of the core package body 110. It should be noted that in an alternative embodiment, there may be two second heat conducting portions 132, one of which is provided corresponding to the first side surface, and the other of which is provided corresponding to the second side surface. In other embodiments of the present invention, the number of the second heat conducting parts 132 may be three or four, and is not limited to the above description.

[0032] Optionally, the first heat conducting portion 131 and the second heat conducting portion 132 are integrally formed parts, and the raw material structure of the heat conducting member 130 is a sheet structure. The material has a certain degree of bendability to facilitate bottom bending during assembly. After being assembled to the core package body 110, the heat conducting member 130 includes the second heat conducting portion 132 corresponding to the first side surface of the core package body 110 and the first heat conducting portion 131 corresponding to the bottom surface of the core package body 110. The heat conducting member 130 needs to be bent more than 7 times without cracks. This can reduce the probability of damage to the heat conducting member 130 and extend the service life of the heat conducting member 130. It should be noted that in the embodiment of the present invention, the material of the heat conducting member 130 can be selected from metal materials or non-metal materials with good thermal conductivity according to actual needs, and the material of the heat conducting member 130 is not specifically limited here.

[0033] Optionally, the thickness of the heat conductor 130 is 0.005mm-1.0mm, such as 0.005mm, 0.01mm, 0.05mm, 0.1mm, 0.5mm, 1mm, etc. If the thickness of the heat conductor 130 is too small, the ability of the heat conductor 130 will be reduced, which is not conducive to the heat dissipation of the core package assembly 100. If the thickness of the heat conductor 130 is too large, it will lead to material waste and occupy a large space, which is not conducive to reducing the manufacturing cost of the core package assembly 100 and the miniaturization design of the battery. In this embodiment, controlling the thickness of the heat conductor 130 to 0.005mm-1.0mm can ensure its heat conduction effect, avoid material waste and occupy too much space, and is conducive to reducing the manufacturing cost of the core package assembly 100 and the miniaturization design of the battery. Of course, in other embodiments of the present invention, the thickness of the heat conductor 130 can be adjusted according to actual needs and is not limited to the above description. In addition, in the embodiment of the present invention, the thicknesses of the first heat conducting portion 131 and the second heat conducting portion 132 may be the same or different, and the thickness relationship between the first heat conducting portion 131 and the second heat conducting portion 132 may be determined according to heat dissipation requirements.

[0034] Optionally, the difference between the dimension H1 of the first side surface along the second direction and the dimension H2 of the second heat conducting portion 132 along the second direction is 10 mm to 50 mm, for example, 10 mm, 20 mm, or 50 mm. It is understood that if the dimension H2 of the second heat conducting portion 132 along the first direction is too large, the width of the entire core package assembly 100 will increase, which is not conducive to the miniaturization design of the battery. If the dimension H2 of the second heat conducting portion 132 along the first direction is too small, its thermal conductivity will be reduced. The difference between the dimension H1 of the first side surface along the first direction and the dimension H2 of the second heat conducting portion 132 along the first direction is 10 mm to 50 mm, which can both control the size of the core package assembly 100 in the first direction and ensure the thermal conductivity of the second heat conducting portion 132. Of course, the difference between the width of the first side surface and the width of the second heat conducting portion 132 can also be other values, such as 80 mm or 100 mm, and can be selected according to actual needs.

[0035] Alternatively, the two edges of the second heat-conducting portion 132 spaced apart along the second direction are spaced apart from the two edges of the first side surface along the second direction. Furthermore, the second heat-conducting portion 132 is centered relative to the first side surface, i.e., in the second direction, the second heat-conducting portion 132 is spaced the same distance from the edges of the first side surface.

[0036] refer to Figure 1-Figure 2As shown, the side surfaces of the core package body 110 include two first side surfaces and two second side surfaces, the two first side surfaces are spaced apart along the first direction, and the two second side surfaces are spaced apart along the second direction; the area of ​​the first side surface is larger than the area of ​​the second side surface, and the insulating member 120 includes a first fitting portion 121, a second fitting portion 122 and a connecting portion 123, the first fitting portion 121 is fitted to a first side surface of the core package body 110, and the second fitting portion 122 is fitted to the other first side surface of the core package body 110; the connecting portion 123 is fitted to the bottom surface of the core package body 110, and the two sides of the connecting portion 123 opposite to each other along the first direction are respectively connected to the first fitting portion 121 and the second fitting portion 122. It can be understood that a tab is usually provided on the top of the core package body 110, and the tab needs to be connected to the top cover of the battery. In this embodiment, the insulating member 120 is respectively adhered to the two first side surfaces and the bottom surface of the core package body 110 through the first fitting portion 121, the second fitting portion 122 and the connecting portion 123, which can provide better protection for the core package body 110, and can insulate the core package body 110 from the first heat conducting portion 131 and the second heat conducting portion 132 of the heat conducting member 130, which is beneficial to improving the reliability of the core package assembly 100.

[0037] refer to Figure 2 As shown, the insulating member 120 further includes two first side wings 124 and two second side wings 125. The two first side wings 124 are spaced apart along the second direction and connected to the first fitting portion 121 on either side of the second direction; the two second side wings 125 are spaced apart along the second direction and connected to the second fitting portion 122 on either side of the second direction. It will be appreciated that by providing the two first side wings 124 and the two second side wings 125, the insulating member can also be attached to the two second side surfaces of the core package body 110, thereby providing good insulation and protection for the core package body 110, thereby facilitating the operational reliability of the core package assembly 100. Optionally, after the insulating member 120 is applied to the core package assembly 100, the two first side wings 124 and the two second side wings 125 are overlapped or seamlessly joined. This allows the second side surfaces to be completely enclosed within the insulation 120, ensuring insulation and protection of the core package body 110.

[0038] refer to Figure 1-Figure 2As shown, the heat conducting member 130 includes a first heat conducting portion 131 and a second heat conducting portion 132. The second heat conducting portion 132 is disposed corresponding to the first side surface of the core package body 110 and is disposed in contact with the second bonding portion 122. The difference between the dimension L1 of the first bonding portion 121 along the third direction and the dimension L2 of the second bonding portion 122 along the third direction is 2 mm to 10 mm. The third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction. It can be understood that when the core package assembly 100 is assembled, the second fitting portion 122 of the insulating part 120 is clamped between the second heat conducting portion 132 and the outer shell 200, and the first fitting portion 121 is clamped between the outer shell 200 and the first side of the core package body 110. The first fitting portion 121 is connected to the lower plastic on the top cover of the battery. The size of the second fitting portion 122 along the third direction is smaller than the size of the first fitting portion 121 along the third direction, which can avoid the second fitting portion 122 on the inner side of the covering from interfering with the top cover, thereby facilitating assembly.

[0039] Optionally, the insulating member 120 is an integrally formed member, and bending marks are provided between the first fitting portion 121 and the connecting portion 123, between the second fitting portion 122 and the connecting portion 123, between the first fitting portion 121 and the first side wing 124, and between the second fitting portion 122 and the second side wing 125. It is understandable that the insulating member 120 being an integrally formed member facilitates the manufacture of the insulating member 120. The insulating member 120 can be made of sheet material. After being assembled to the core package body 110, the insulating member 120 presents a box shape with an open top. The number of bends of the insulating member 120 needs to be greater than 7 times without cracks being generated. This can reduce the probability of damage to the insulating member 120 and extend the service life of the insulating member 120. It should be noted that in the embodiment of the present invention, the material of the insulating member 120 can be selected from metal materials with good insulation properties according to actual needs, and the material of the insulating member 120 is not specifically limited here.

[0040] refer to Figure 1 As shown, the core package assembly 100 also includes a bottom support member 140, which is connected to the side of the connecting portion 123 away from the core package body 110, and the bottom wall of the core package body 110 is in contact with the connecting portion 123. The bottom support member 140 is arranged below the connecting portion 123, and the first heat conducting portion 131 is arranged below the bottom support member 140. The added bottom support member 140 is conducive to ensuring that the core package body 110 covered with the insulating member 120 presses the heat conducting member 130 under the action of its own gravity, thereby facilitating the first heat conducting portion 131 to transfer the heat of the core package body 110 to the bottom wall of the shell 200 and take it away by the external cooling device.

[0041] Optionally, a positioning structure is provided between the bottom support member 140 and the connecting portion 123. It is understood that in this embodiment, if Figure 3As shown, the positioning structure includes a first positioning hole 141 provided on the bottom support member 140 and a second positioning hole 1231 provided on the connecting portion 123. During the actual assembly process, the positioning holes are used to achieve the positioning connection between the bottom support member 140 and the connecting portion 123, ensuring assembly accuracy. Of course, in other embodiments of the present invention, the positioning structure can also be a positioning mark, a positioning column and a positioning hole, a positioning groove and a positioning protrusion, and other structures and combinations thereof, and is not limited to the above.

[0042] Example 2:

[0043] The core package assembly 100 of this embodiment is substantially the same as that of the first embodiment, except that the heat conducting member 130 of the core package assembly 100 of this embodiment has two second heat conducting portions 132 , which are respectively arranged to fit the two first side surfaces of the core package body 110 .

[0044] Optionally, the difference between the dimension H1 of the first side surface along the second direction and the dimension H2 of the second heat conducting portion 132 along the second direction is 10 mm to 50 mm. Further, optionally, the second heat conducting portion 132 is centered relative to the first side surface.

[0045] Example 3:

[0046] This embodiment discloses a battery comprising a Figure 4-Figure 7 As shown, the outer shell 200 and the core package assembly 100 in Example 1. It can be understood that since the battery of this embodiment includes the core package assembly 100 in Example 1, in the actual assembly process, the insulating member 120 is connected to the bottom support member 140 (which can be welded or bonded or other connection methods), and the bottom support member 140 is connected to the connection portion 123 of the insulating member 120. The connected insulating member 120 is wrapped on the core package body 110, and after the wrapping is completed, the thermal conductive member 130 is installed in the middle of the core package body 110. The top of the insulating member 120 is connected to the plastic above the outer shell 200. After the core package assembly 100 is completed, the core package body 110 presses the first thermal conductive portion 131 of the thermal conductive member 130 due to gravity, so that it fits tightly to the outer shell 200. The heat from the side wall of the core package body 110 of the second heat conducting part 132 is conducted to the first heat conducting part 131 and the side wall of the shell 200, and finally gathered on the bottom wall of the shell 200. The bottom wall of the shell 200 is cooled by the cooling device, so that the temperature difference between the inside and outside of the battery is small and the cycle life is long.

[0047] refer to Figure 7As shown, the outer shell 200 includes a shell body 210 and a top cover assembly 220, and the end of the insulating member 120 away from the bottom of the shell body 210 is connected to the top cover assembly 220. It can be understood that the top cover assembly 220 is used to be connected to the tab of the core package body 110, thereby facilitating the connection of the battery to the external structure. It should be noted that the top cover assembly 220 includes a top cover body 221, a top cover patch 222, a tab connecting piece 223 and other structures. These structures are all prior art, and the structure of the top cover assembly 220 is not described in detail here. Optionally, the outer shell 200 of the shell body 210 is provided with a protective film 230, which is beneficial to improving the protection effect of the battery.

[0048] Figure 5 、 Figure 7 The two core package assemblies 100 in the battery shown in FIG. The side of the core package body 110 includes two first side surfaces and two second side surfaces, and the area of ​​the first side surface is larger than the area of ​​the second side surface. The first side surfaces of the two core package bodies 110 are arranged opposite to each other. The second heat conducting portion 132 of the heat conducting member 130 is one and is arranged corresponding to one first side surface. And the second heat conducting portions 132 of the two heat conducting members 130 are attached to each other ( Figure 6 As shown). It can be understood that when the thickness of the core package body 110 is relatively large (greater than 20 mm), since the distance between the relatively arranged first side surfaces of the two core package bodies 110 and the inner side wall of the outer shell 200 is relatively large, it is easy to cause a temperature difference between the first side surface close to the outer shell 200 and the first side surface away from the outer shell 200 in the two first side surfaces of the core package body 110. When the temperature difference is too large, it will affect the service life of the battery. In this embodiment, the second heat-conducting portions 132 of the two heat-conducting members 130 fit together to transfer the heat in the middle to the bottom wall of the outer shell 200, and the heat is taken away by the liquid cooling system, thereby reducing the temperature difference between the middle and the edge of the core package body 110, which is beneficial to extending the cycle life of the battery. In other embodiments of the present invention, the number of core package assemblies 100 can be one, or three, four or even more. When the number of core package assemblies 100 is multiple, it is sufficient to ensure that at least one second heat-conducting portion 132 is provided between the relatively arranged first side surfaces of the two core package bodies 110 according to the heat dissipation needs.

[0049] Example 4:

[0050] The structure of the battery of this embodiment is substantially the same as that of the third embodiment, except that the core pack assembly 100 in the battery of this embodiment is the core pack assembly 100 described in the second embodiment.

[0051] Embodiment 5:

[0052] The structure of the battery of this embodiment is substantially the same as that of the third embodiment, except that there are multiple core pack assemblies 100, and the multiple core pack assemblies 100 include both the core pack assemblies 100 described in the first embodiment and the core pack assemblies 100 described in the second embodiment.

[0053] Throughout this specification, references to "some embodiments," "other embodiments," and the like indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A core package assembly, characterized in that: include: Core package body (110); an insulating member (120), the insulating member (120) being coated on the core package body (110); A heat conducting member (130) is provided in contact with the insulating member (120), and the heat conducting member (130) has a first heat conducting portion (131) and a second heat conducting portion (132), wherein the first heat conducting portion (131) is provided corresponding to the bottom surface of the core package body (110), and the second heat conducting portion (132) is provided corresponding to the side surface of the core package body (110).

2. The core package assembly according to claim 1, characterized in that The side surfaces of the core package body (110) include two first side surfaces and two second side surfaces, the area of ​​the first side surfaces is larger than the area of ​​the second side surfaces, and the second heat conducting portion (132) is arranged corresponding to at least one of the first side surfaces.

3. The core package assembly according to claim 1, characterized in that The side surfaces of the core package body (110) include two first side surfaces and two second side surfaces, the two first side surfaces are spaced apart along a first direction, the two second side surfaces are spaced apart along a second direction, and the area of ​​the first side surface is larger than that of the second side surface; The insulating member (120) includes a first fitting portion (121), a second fitting portion (122) and a connecting portion (123), wherein the first fitting portion (121) is fitted to one of the first side surfaces of the core package body (110), and the second fitting portion (122) is fitted to the other first side surface of the core package body (110); the connecting portion (123) is fitted to the bottom surface of the core package body (110), and the two sides of the connecting portion (123) that are oppositely arranged along the first direction are respectively connected to the first fitting portion (121) and the second fitting portion (122).

4. The core package assembly according to claim 3, characterized in that: The insulating member (120) further comprises two first side wings (124) and two second side wings (125), wherein: The two first side wings (124) are spaced apart along the second direction and connected to both sides of the first fitting portion (121) along the second direction; the two second side wings (125) are spaced apart along the second direction and connected to both sides of the second fitting portion (122) along the second direction.

5. The core package assembly according to claim 3, characterized in that: The second heat conducting portion (132) is arranged in contact with the second bonding portion (122), the difference between the length of the first bonding portion (121) along the third direction and the length of the second bonding portion (122) along the third direction is 2mm-10mm, the third direction is arranged perpendicular to the first direction, and the third direction is arranged perpendicular to the second direction.

6. The core package assembly according to claim 4, characterized in that: The insulating part (120) is an integrally formed part, and bending marks are provided between the first fitting part (121) and the connecting part (123), between the second fitting part (122) and the connecting part (123), between the first fitting part (121) and the first side wing (124), and between the second fitting part (122) and the second side wing (125).

7. The core package assembly according to claim 3, characterized in that: The core package assembly further includes a bottom support member (140), and the bottom support member (140) is connected to a side of the connecting portion (123) facing away from the core package body (110).

8. The core package assembly according to claim 7, characterized in that: A positioning structure is provided between the bottom supporting member (140) and the connecting portion (123).

9. A battery, characterized in that: It comprises a shell (200) and a core pack assembly according to any one of claims 1 to 8, wherein the number of the core pack assembly is at least one.

10. The battery according to claim 9, characterized in that The outer shell (200) includes a shell body (210) and a top cover assembly (220), wherein the shell body (210) is provided with an opening, and the top cover assembly (220) is used to seal the opening, the core package assembly is installed in the shell body (210), and the end of the insulating member (120) of the core package assembly away from the bottom of the shell body (210) is connected to the top cover assembly (220).

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