Cover assembly of energy storage case, housing assembly of energy storage case, and energy storage case

Abstract

An energy storage case. The energy storage case comprises a housing assembly of the energy storage case, and the housing assembly of the energy storage case comprises a cover assembly of the energy storage case. The cover assembly of the energy storage case comprises a cover and a heat dissipation structure. The cover has an inner surface, and the inner surface of the cover is suitable for facing battery packs. The heat dissipation structure is arranged on the inner surface of the cover and is suitable for protruding toward the battery packs, and the heat dissipation structure is used for being in contact with the battery packs to transfer heat of the battery packs to the cover.

Description

Cover assembly of energy storage box, shell assembly of energy storage box and energy storage box

[0001] Cross Reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202421127605.2, filed on May 22, 2024, entitled "Cover assembly of energy storage box, shell assembly of energy storage box and energy storage box", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to a cover assembly of an energy storage box, a shell assembly of an energy storage box and an energy storage box. BACKGROUND

[0004] At present, as the demand for using energy storage products in families is increasing, the capacity of the energy storage products in families is getting larger and larger, and the charging and discharging rate is getting higher and higher, and in order to take into account the use environment outdoors, the energy storage products also need to have waterproof function, so that the heat generation of the internal module of the energy storage products is large, and it is not easy to dissipate heat, thereby affecting the performance of the energy storage products.

[0005] In the related art, the main structure form of the energy storage product is the combination structure of the end plate and the pull strip, as the mating surface of the battery cell module end plate is pasted with foam to absorb the dimensional tolerance between the parts, so that the mating surface cannot form a heat dissipation surface, and the surface where the tab is located needs to avoid damage to the tab, so that the tab cannot dissipate heat, thereby the heat dissipation surface of the battery module is insufficient, and most of the modules mainly dissipate heat through single surface and shell, thereby the heat dissipation effect of the energy storage product is poor.

[0006] DISCLOSURE

[0007] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a cover assembly of an energy storage box, which can improve the performance of the energy storage box and prolong the service life of the energy storage box.

[0008] The present application further provides a shell assembly of an energy storage box.

[0009] The present application further provides an energy storage box.

[0010] According to the cover assembly of the energy storage box provided in the present application, the heat of the battery pack can be transferred to the cover through the heat dissipation structure arranged between the inner surface of the cover and the battery pack, so that the heat concentration of the battery pack can be avoided, and the performance and service life of the energy storage box can be improved.

[0011] According to the cover assembly of the energy storage box provided in the present application, the heat of the battery pack can be transferred to the cover through the heat dissipation structure arranged between the inner surface of the cover and the battery pack, so that the heat concentration of the battery pack can be avoided, and the performance and service life of the energy storage box can be improved.

[0012] In some examples of the present application, the heat dissipation structure comprises a heat dissipation bracket mounted on the inner surface of the cover and adapted to be protrudingly arranged towards the battery pack.

[0013] In some examples of the present application, the heat dissipation bracket comprises a heat dissipation plate having a first heat dissipation surface facing the battery pack, and a connecting plate connected between the heat dissipation plate and the inner surface of the cover, so that the heat dissipation plate is adapted to be protrudingly arranged towards the battery pack relative to the inner surface of the cover.

[0014] In some examples of the present application, the connecting plate is arranged to be bent relative to the heat dissipation plate, and the heat dissipation plate is configured to be flat.

[0015] In some examples of the present application, the connecting plate is arranged to be bent relative to the heat dissipation plate, and the heat dissipation plate is configured to be flat.

[0016] In some examples of the present application, the connecting plate is arranged to be bent relative to the heat dissipation plate, and the heat dissipation plate is configured to be flat.

[0017] In some examples of the present application, the heat dissipation bracket further comprises a first flange connected to the first connecting plate and arranged to be bent relative to the first connecting plate, and the first flange is attached to the inner surface of the cover; and a second flange connected to the second connecting plate and arranged to be bent relative to the second connecting plate, and the second flange is attached to the inner surface of the cover.

[0018] In some examples of the present application, the first flange is welded to the inner surface of the cover, and / or the second flange is welded to the inner surface of the cover.

[0019] In some examples of the present application, the plurality of connecting plates further comprises a third connecting plate located between the first connecting plate and the second connecting plate.

[0020] In some examples of the present application, the heat dissipation plate and the connecting plates are integrally formed to form an integrated heat dissipation support.

[0021] In some examples of the present application, the heat dissipation structure further comprises a first flexible heat-conductive pad disposed on a side surface of the heat dissipation support facing the battery pack and used to contact the battery pack, so that the battery pack transmits heat to the cover through the first flexible heat-conductive pad and the heat dissipation support.

[0022] In some examples of the present application, the heat dissipation structure has a plurality of battery pack contact areas in the length extension direction thereof, and the plurality of battery pack contact areas are used to contact the plurality of battery packs one by one.

[0023] According to the shell assembly of the energy storage box of the present application, it comprises a shell component and the cover component of the energy storage box described above, and the cover is connected with the shell component.

[0024] In some examples of the present application, the shell component comprises a shell having an inner surface, the inner surface of the shell being adapted to be disposed towards the battery pack, the inner surface of the shell having a second heat dissipation surface in contact with the battery pack; and a cavity dividing structure disposed in the shell, the cavity dividing structure and the shell together forming a plurality of battery module cavities separated from each other, the battery module cavities being used to accommodate the battery pack, the cavity dividing structure having an inner surface, the inner surface of the cavity dividing structure being disposed towards the battery pack, the cavity dividing structure having a third heat dissipation surface adapted to be in contact with the battery pack.

[0025] In some examples of the present application, the cavity dividing structure comprises a plurality of rib plates, the plurality of rib plates being disposed in the shell, the plurality of rib plates extending in a first direction and being spaced apart in a second direction, the first direction being disposed perpendicularly to the second direction and parallel to the cover; a plurality of pressing plates, the plurality of pressing plates extending along the second direction and being spaced apart in the first direction, each of the pressing plates being connected to a side of the plurality of rib plates adjacent to the cover, the heat dissipation structure and the pressing plates being spaced apart in the first direction; and a partition plate connected between two adjacent rib plates and extending along the second direction, the shell, the two adjacent rib plates, the pressing plate and the partition plate together forming the plurality of battery module cavities, the third heat dissipation surface being disposed on the partition plate.

[0026] In some examples of the present application, the buffer member includes a first buffer portion attached to the second heat dissipation surface, and a second buffer portion attached to the third heat dissipation surface.

[0027] In some examples of the present application, the first buffer portion is formed with a through hole penetrating through its thickness, and the shell assembly further includes a second flexible heat-conductive pad disposed in the through hole and configured to contact the battery pack, so that the battery pack transmits heat to the shell through the second flexible heat-conductive pad.

[0028] In some examples of the present application, the second buffer portion is formed with a heat dissipation hole penetrating through its thickness.

[0029] In some examples of the present application, the heat dissipation hole is a plurality of heat dissipation holes spacedly distributed on the second buffer portion.

[0030] According to the energy storage box of the present application, the energy storage box includes the shell assembly and the battery pack.

[0031] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0032] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0033] FIG. 1 is a cross-sectional view of an energy storage box according to an embodiment of the present application;

[0034] FIG. 2 is a first angle partial structural schematic view of a shell assembly of the energy storage box according to an embodiment of the present application;

[0035] FIG. 3 is a second angle partial structural schematic view of the shell assembly of the energy storage box according to an embodiment of the present application;

[0036] FIG. 4 is a schematic block diagram of the energy storage box according to an embodiment of the present application.

[0037] Reference numerals: 2000, Energy storage box; 1000, Shell assembly; 100, Cover assembly; 110, Cover; 120, Heat dissipation structure; 121, Heat dissipation bracket; 122, Heat dissipation plate; 123, Connecting plate; 124, First connecting plate; 125, Second connecting plate; 126, First flange; 127, Second flange; 128, Third connecting plate; 129, First flexible thermal conductive pad; 200, Shell assembly; 210, Shell; 220, Cavity structure; 221, Rib; 222, Pressure plate; 223, Partition; 230, Buffer; 231, First buffer section; 232, Second buffer section; 233, Heat dissipation hole; 234, Battery module cavity; 240, Through hole; 250, Second flexible thermal conductive pad; 300, Battery pack. Detailed Implementation

[0038] The embodiments of this application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0039] The cover assembly 100 of the energy storage box according to an embodiment of the present application is described below with reference to Figures 1-3. The cover assembly 100 of the energy storage box is applied in the energy storage box.

[0040] As shown in Figure 1, the cover assembly 100 of the energy storage box according to this application includes a cover 110 and a heat dissipation structure 120. The cover 110 has an inner surface, which is adapted to face the battery pack 300 inside the energy storage box. The heat dissipation structure 120 is disposed on the inner surface of the cover 110 and is adapted to protrude towards the battery pack 300. The heat dissipation structure 120 is used to contact the battery pack 300 to transfer the heat of the battery pack 300 to the cover 110.

[0041] It is understood that the cover 110 and the heat dissipation structure 120 constitute the main structure of the cover assembly 100 of the energy storage box. The inner surface of the cover 110 faces the battery pack 300 in the energy storage box, and the outer surface of the cover 110 is in contact with the air. The heat dissipation structure 120 is located on the inner surface of the cover 110 and extends towards the battery pack 300. This allows the side of the heat dissipation structure 120 away from the inner surface of the cover 110 to abut against the battery pack 300. This arrangement allows the heat dissipation structure 120 to be located between the inner surface of the cover 110 and the battery pack 300. The heat generated by the battery pack 300 is transferred to the inner surface of the cover 110 through the heat dissipation structure 120, and then to the outer surface of the cover 110 and in contact with the air. This enables the cover 110 and the heat dissipation structure 120 to conduct heat to the battery pack 300, thereby improving the performance of the energy storage box and increasing its service life.

[0042] Therefore, by arranging the heat dissipation structure 120 between the inner surface of the cover body 110 and the battery pack 300, the heat of the battery pack 300 can be transferred to the cover body 110, thereby avoiding the heat concentration of the battery pack 300, and further improving the performance and service life of the energy storage box.

[0043] As shown in FIG. 1, the heat dissipation structure 120 includes a heat dissipation bracket 121, which is mounted on the inner surface of the cover body 110 and is adapted to be protrudingly arranged towards the battery pack 300. That is, the heat dissipation bracket 121 is located on the inner surface of the cover body 110, and the heat dissipation bracket 121 extends towards the battery pack 300, so that the side of the heat dissipation bracket 121 away from the inner surface of the cover body 110 abuts against the battery pack 300. In this way, the heat dissipation bracket 121 is arranged between the inner surface of the cover body 110 and the battery pack 300, so that the heat generated by the battery pack 300 is first transferred to the inner surface of the cover body 110 through the heat dissipation bracket 121, and then is transferred to the outer surface of the cover body 110 and contacts with the air, thereby realizing the heat conduction of the battery pack 300 by the heat dissipation bracket 121, and further improving the performance and service life of the energy storage box.

[0044] In addition, as shown in FIG. 1, the heat dissipation bracket 121 includes a heat dissipation plate 122 and a connecting plate 123. The heat dissipation plate 122 has a first heat dissipation surface facing the battery pack 300. The connecting plate 123 is connected between the heat dissipation plate 122 and the inner surface of the cover body 110, and is bent relative to the heat dissipation plate 122, so that the heat dissipation plate 122 is protrudingly arranged towards the battery pack 300 relative to the inner surface of the cover body 110. It can be understood that the heat dissipation plate 122 and the connecting plate 123 constitute the main structure of the heat dissipation bracket 121. The heat dissipation plate 122 is arranged close to the battery pack 300, and the heat dissipation plate 122 is arranged as the first heat dissipation surface facing the battery pack 300, so that the heat of the battery pack 300 is transferred to the heat dissipation plate 122 through the first heat dissipation surface. The connecting plate 123 is located on the left and right sides of the heat dissipation plate 122, and is bent relative to the heat dissipation plate 122 towards the inner surface of the shell 210 (more specifically, the inner surface of the cover body 110). In this way, the connecting plate 123 is arranged between the inner surface of the shell 210 (more specifically, the inner surface of the cover body 110) and the heat dissipation plate 122, so that the heat dissipation plate 122 is protruded away from the inner surface of the cover body 110 to abut against the battery pack 300, and further the heat of the battery pack 300 is transferred to the first heat dissipation surface, and then is sequentially transferred to the heat dissipation plate 122 and the connecting plate 123, and finally is transferred to the outer surface of the shell 210 to contact with the air. For example, the heat dissipation plate 122 is configured as a flat plate, which can increase the contact area between the heat dissipation plate 122 and the battery pack 300, so that the heat of the battery pack 300 is sequentially transferred to the connecting plate 123 and the shell 210 through the heat dissipation plate 122, and further the heat concentration of the battery pack 300 can be avoided.

[0045] In particular, as shown in FIG. 1, the plurality of connecting plates 123 are arranged at intervals on the heat dissipation plate 122, the plurality of connecting plates 123 include a first connecting plate 124 and a second connecting plate 125, the heat dissipation plate 122 has a first side and a second side arranged oppositely, the first connecting plate 124 is connected to the first side of the heat dissipation plate 122, and the second connecting plate 125 is connected to the second side of the heat dissipation plate 122. That is, the plurality of connecting plates 123 are arranged at intervals, and the plurality of connecting plates 123 are all connected to the heat dissipation plate 122, so that the heat of the battery pack 300 can be transferred to the heat dissipation plate 122, and then to the plurality of connecting plates 123. The first connecting plate 124 and the second connecting plate 125 are respectively located on the left and right sides of the heat dissipation plate 122, so that the heat of the battery pack 300 can be transferred to the heat dissipation plate 122, and then to the first connecting plate 124 and the second connecting plate 125 respectively, thereby avoiding the concentration of heat of the battery pack 300.

[0046] In addition, as shown in FIG. 1, the heat dissipation support 121 further includes a first flange 126 and a second flange 127, the first flange 126 is connected to the first connecting plate 124 and is arranged in a bent manner relative to the first connecting plate 124, and the first flange 126 is attached to the inner surface of the cover 110. The second flange 127 is connected to the second connecting plate 125 and is arranged in a bent manner relative to the second connecting plate 125, and the second flange 127 is attached to the inner surface of the cover 110. It can be understood that the first flange 126 is arranged on the side of the first connecting plate 124 close to the inner surface of the shell 210 (more specifically, the inner surface of the cover 110), and the first flange 126 is bent to the left relative to the first connecting plate 124. The second flange 127 is arranged on the side of the second connecting plate 125 close to the inner surface of the shell 210 (more specifically, the inner surface of the cover 110), and the second flange 127 is bent to the right relative to the second connecting plate 125, thereby improving the overall structural strength of the heat dissipation support 121. The first flange 126 and the second flange 127 extend away from each other, and the first flange 126 and the second flange 127 are both attached to the inner surface of the cover 110, so that the heat of the battery pack 300 can be transferred to the first heat dissipation surface, then to the heat dissipation plate 122, then to the first connecting plate 124 and the second connecting plate 125, then to the first flange 126 and the second flange 127, and finally to the outer surface of the shell 210 to contact with the air, thereby avoiding the concentration of heat of the battery pack 300.

[0047] In particular, as shown in FIG. 1, the first flange 126 is welded to the inner surface of the cover 110, and the second flange 127 is welded to the inner surface of the cover 110. This arrangement can make the connection between the heat dissipation support 121 and the inner surface of the cover 110 more firm, thereby improving the overall structural strength of the cover assembly 100 of the energy storage box.

[0048] In addition, as shown in FIG. 1, the plurality of connecting plates 123 further comprises a third connecting plate 128, which is located between the first connecting plate 124 and the second connecting plate 125. That is, the third connecting plate 128 is arranged on the heat dissipation plate 122, and the third connecting plate 128 is arranged between the first connecting plate 124 and the second connecting plate 125, one side of the third connecting plate 128 abuts against the battery pack 300, so that the heat of the battery pack 300 can be transferred to the heat dissipation plate 122, and then to the third connecting plate 128 and the shell 210 in turn, thereby avoiding the concentration of heat of the battery pack 300.

[0049] In particular, as shown in FIG. 1, the heat dissipation plate 122 and the connecting plate 123 are integrally formed, thereby forming an integrated heat dissipation support 121, which facilitates the disassembly and installation of the heat dissipation support 121, and also forms a cavity in the heat dissipation support 121, thereby meeting the waterproof requirement and improving the heat dissipation efficiency of the heat dissipation support 121.

[0050] In addition, as shown in FIG. 1, the heat dissipation structure 120 further comprises a first flexible heat-conducting pad 129 arranged on the side surface of the heat dissipation support 121 facing the battery pack 300 and used to contact the battery pack 300, so that the battery pack 300 transfers heat to the cover 110 through the first flexible heat-conducting pad 129 and the heat dissipation support 121. It can be understood that the first flexible heat-conducting pad 129 is located between the heat dissipation plate 122 and the battery pack 300, and the first flexible heat-conducting pad 129 abuts against the first heat dissipation surface, so that the heat of the battery pack 300 is transferred to the first heat dissipation surface through the first flexible heat-conducting pad 129, and then to the heat dissipation plate 122, and then to the first connecting plate 124, the second connecting plate 125 and the third connecting plate 128, and finally to the shell 210 for heat conduction, thereby avoiding the concentration of heat of the battery pack 300. For example, the first flexible heat-conducting pad 129 is made of silica gel, thereby ensuring the heat conductivity of the first flexible heat-conducting pad 129, and thereby avoiding the concentration of heat of the battery pack 300.

[0051] The heat dissipation structure 120 has a plurality of battery pack contact areas in the length extension direction thereof, which are used to contact the plurality of battery packs 300 one by one. That is, one battery pack 300 corresponds to one battery pack contact area, and the heat dissipation structure 120 extends in the up-down direction, and each heat dissipation structure 120 contacts the battery pack 300, so that the heat of the battery pack 300 is transferred to the cover 110 through the heat dissipation structure 120, thereby avoiding the concentration of heat of the battery pack 300.

[0052] As shown in FIG. 1 and FIG. 2, the shell assembly 1000 of the energy storage box according to the present application comprises the shell component 200 and the cover component 100 of the energy storage box of the above embodiment, the cover 110 is connected with the shell component 200, so that the mounting space is formed between the cover 110 and the shell component 200, and then the battery pack 300 is arranged in the mounting space, and the heat dissipation structure 120 is arranged between the inner surface of the cover 110 and the battery pack 300, so that the heat of the battery pack 300 is transmitted to the cover 110, thereby avoiding the heat concentration of the battery pack 300, and the performance of the energy storage box is improved, and the service life is prolonged.

[0053] As shown in FIG. 2, the shell component 200 comprises the shell 210 and the cavity dividing structure 220, the shell 210 has an inner surface, the inner surface of the shell 210 is arranged towards the battery pack 300, the inner surface of the shell 210 has a second heat dissipation surface in contact with the battery pack 300, the cavity dividing structure 220 is arranged in the shell 210, the cavity dividing structure 220 and the shell 210 jointly form a plurality of battery module cavities 234 which are separated, the battery module cavities 234 are used for accommodating the battery pack 300, the cavity dividing structure 220 has an inner surface, the inner surface of the cavity dividing structure 220 is arranged towards the battery pack 300, and the cavity dividing structure 220 has a third heat dissipation surface in contact with the battery pack 300.

[0054] It can be understood that the shell 210 and the cavity dividing structure 220 constitute the main structure of the shell component 200, the inner surface of the shell 210 is provided with the second heat dissipation surface, the second heat dissipation surface is arranged towards the battery pack 300, so that the heat of the battery pack 300 is transmitted to the shell 210 through the second heat dissipation surface, and finally transmitted to the outer surface of the shell 210 which is in contact with the air. The cavity dividing structure 220 is arranged in the shell 210, so that the cavity dividing structure 220 divides the internal space of the shell 210 into a plurality of battery module cavities 234, the plurality of battery module cavities 234 can limit the battery pack 300, so that the battery pack 300 is arranged in the battery module cavities 234, and the inner surface of the cavity dividing structure 220 is provided with the third heat dissipation surface, so that the heat of the battery pack 300 is transmitted to the cavity dividing structure 220 through the third heat dissipation surface, thereby avoiding the heat concentration of the battery pack 300.

[0055] In addition, as shown in FIGS. 1-3, the cavity-dividing structure 220 includes a plurality of rib plates 221, a plurality of pressing plates 222, and a partition plate 223. The plurality of rib plates 221 are disposed in the housing 210, extend in a first direction, and are spaced apart in a second direction. The first direction is perpendicular to the second direction and parallel to the cover 110. The plurality of pressing plates 222 extend in the second direction and are spaced apart in the first direction. Each pressing plate 222 is connected to one side of the plurality of rib plates 221 adjacent to the cover 110. The heat dissipation structure 120 is spaced apart from the pressing plate 222 in the first direction. The partition plate 223 is connected between two adjacent rib plates 221 and extends in the second direction. The housing 210, the two adjacent rib plates 221, the pressing plate 222, and the partition plate 223 collectively form a plurality of battery module cavities 234. A third heat dissipation surface is provided on the partition plate 223.

[0056] That is, the plurality of rib plates 221, the plurality of pressing plates 222 and the partition plate 223 constitute the main structure of the sub-cavity structure 220, the first direction is the left-right direction, the second direction is the up-down direction, the plurality of rib plates 221 are arranged in the left-right direction and are arranged in the up-down direction, so that the plurality of rib plates 221 can divide the internal space of the shell 210 into a plurality of battery module cavities 234, thereby facilitating the battery pack 300 to be arranged in the plurality of battery module cavities 234. The cover 110 is arranged at the opening of the shell 210, so that the cover 110 and the shell 210 form a sealed cavity structure, thereby ensuring the waterproof requirement of the shell assembly 1000 of the energy storage box. The plurality of pressing plates 222 are arranged in the up-down direction and are arranged in the left-right direction, so as to expand the coverage area of the plurality of pressing plates 222 on the battery pack 300. Each pressing plate 222 is arranged on the side of the plurality of rib plates 221 close to the cover 110, so that the heat of the battery pack 300 can be transmitted to the cover 110 through the plurality of pressing plates 222, and the left and right sides of the battery pack 300 close to the cover 110 are provided with pressing plates 222, so that the battery pack 300 can be more firmly arranged in the battery module cavity 234. The heat dissipation structure 120 is located between the two pressing plates 222 on the battery pack 300 close to the cover 110. The partition plate 223 is located between the two adjacent rib plates 221 and extends in the up-down direction, so as to divide the internal space of the shell 210 into a plurality of battery module cavities 234, thereby facilitating the battery pack 300 to be arranged in the plurality of battery module cavities 234. The third heat dissipation surface is arranged on the partition plate 223, so that the heat of the battery pack 300 can be transmitted to the sub-cavity structure 220 through the third heat dissipation surface, thereby avoiding the heat concentration of the battery pack 300. For example, the plurality of pressing plates 222 and the plurality of rib plates 221 are fixed by screws, so that the plurality of pressing plates 222 and the plurality of rib plates 221 can press the battery pack 300 tightly, thereby preventing the battery pack 300 from moving in the battery module cavity 234, and the battery pack 300 can be tightly attached to the shell assembly 200, thereby avoiding the heat concentration of the battery pack 300.

[0057] Further, as shown in FIG. 2 and FIG. 3, the buffer 230 is also included, the buffer 230 includes a first buffer part 231 and a second buffer part 232, the first buffer part 231 is attached to the second heat dissipation surface, the second buffer part 232 is connected with the first buffer part 231 and is arranged in a bent manner relative to the first buffer part 231, and the second buffer part 232 is attached to the third heat dissipation surface. It can be understood that the first buffer part 231 is arranged along the left-right direction, and the first buffer part 231 is attached to the second heat dissipation surface, so that the heat of the battery pack 300 can be transmitted to the second heat dissipation surface through the first buffer part 231, and the second buffer part 232 extends along the up-down direction, and the second buffer part 232 is attached to the third heat dissipation surface, so that the heat of the battery pack 300 can be transmitted to the third heat dissipation surface through the second buffer part 232, thereby avoiding the heat concentration of the battery pack 300. For example, the buffer 230 is a protective foam, so as to facilitate the heat transfer of the buffer 230, and realize the lightweight design of the buffer 230.

[0058] As shown in FIG. 2, the first buffer part 231 is formed with a through hole 240 penetrating along the thickness thereof, and the second buffer part 232 is formed with a heat dissipation hole 233 penetrating along the thickness thereof. The shell assembly 1000 further includes a second flexible heat-conducting pad 250, which is arranged in the through hole 240 and in contact with the battery pack 300, so that the battery pack 300 transmits heat to the shell 210 through the second flexible heat-conducting pad 250. That is, the through hole 240 or the heat dissipation hole 233 is arranged on the first buffer part 231 and the second buffer part 232, so as to improve the heat dissipation capacity of the first buffer part 231 and the second buffer part 232, and the second flexible heat-conducting pad 250 is located in the through hole 240, so that the battery pack 300 transmits heat to the shell 210 through the second flexible heat-conducting pad 250. For example, the second flexible heat-conducting pad 250 is made of silicone, the buffer 230 is a protective foam, one side of the protective foam is provided with a square opening, and the second flexible heat-conducting pad 250 can enter the buffer 230 from the square opening, so as to improve the heat conduction capacity of the buffer 230.

[0059] In particular, as shown in FIG. 2, the heat dissipation hole 233 is a plurality of heat dissipation holes 233, and the plurality of heat dissipation holes 233 are distributed on the second buffer part 232 in a spaced manner. In this way, the heat of the battery pack 300 can be transmitted to the partition plate 223 through the plurality of heat dissipation holes 233, so as to avoid the heat concentration of the battery pack 300.

[0060] In addition, as shown in FIG. 1 and FIG. 2, the heat dissipation structure 120 extends along the second direction, and each heat dissipation structure 120 is in contact with the battery pack 300 in the battery module cavity 234 spaced along the second direction. It can be understood that the heat dissipation structure 120 extends along the up-down direction, and each heat dissipation structure 120 is in contact with the battery pack 300 spaced up and down, so that the heat of the battery pack 300 can be transmitted to the cover 110 through the heat dissipation structure 120, thereby avoiding the concentration of heat of the battery pack 300.

[0061] Specifically, the shell assembly 1000 of the energy storage box can form three heat dissipation paths. The first heat dissipation path is that the heat of the battery pack 300 is transmitted to the heat dissipation structure 120 through the first flexible heat-conducting pad 129, and then to the outer surface of the cover 110 and in contact with the air. The second heat dissipation path is that the heat of the battery pack 300 is transmitted to the shell 210 through the second heat dissipation surface, and finally to the outer surface of the shell 210 and in contact with the air. The third heat dissipation path is that the heat of the battery pack 300 is transmitted to the partition plate 223 and the plurality of rib plates 221 through the buffer 230, and then to the outer surface of the shell 210 and in contact with the air.

[0062] According to the energy storage box 2000 of the present application, the shell assembly 1000 and the battery pack 300 of the energy storage box 2000 of the above embodiment are shown in FIG. 4. The battery pack 300 is arranged in the shell assembly 1000, so that the shell assembly 1000 can limit the battery pack 300, thereby facilitating the installation of the battery pack 300, the cover 110 is connected with the shell assembly 200, so that the installation space is formed between the cover 110 and the shell assembly 200, thereby facilitating the arrangement of the battery pack 300 in the installation space, and the heat dissipation structure 120 is arranged between the inner surface of the cover 110 and the battery pack 300. This arrangement can transmit the heat of the battery pack 300 to the cover 110, thereby avoiding the concentration of heat of the battery pack 300, and thereby improving the performance of the energy storage box 2000 and prolonging the service life.

[0063] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0064] In the description of the application, "a first feature", "a second feature" can include one or more of the features. In the description of the application, the meaning of "a plurality" is two or more. In the description of the application, "on", "above", or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. In the description of the application, "on", "above", and "over" of a first feature to a second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0065] In the description of the application, the description referring to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the illustrative description of the above terms does not necessarily mean the same embodiment or example.

[0066] Although the embodiments of the application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A cover assembly (100) of an energy storage tank, characterized in that, The heat dissipation structure (120) is arranged on the inner surface of the cover body (110) and is adapted to be protrudingly arranged towards the battery pack (300), and is used to contact the battery pack (300) to transfer heat of the battery pack (300) to the cover body (110). The heat dissipation structure (120) comprises: The heat dissipation support (121) is mounted on the inner surface of the cover body (110) and is adapted to be protrudingly arranged towards the battery pack (300). The heat dissipation support (121) comprises:

2. The cover assembly (100) of an energy storage tank according to claim 1, characterized in that, The heat dissipation plate (122) has a first heat dissipation surface towards the battery pack (300); and The connecting plate (123) is connected between the heat dissipation plate (122) and the inner surface of the cover body (110), so that the heat dissipation plate (122) is adapted to be protrudingly arranged towards the battery pack (300) relative to the inner surface of the cover body (110).

3. The cover assembly (100) of an energy storage tank according to claim 2, characterized in that, The connecting plate (123) is arranged to be bent relative to the heat dissipation plate (122), and the heat dissipation plate (122) is configured in a flat plate shape. The connecting plate (123) is a plurality of, and the plurality of connecting plates (123) are arranged at intervals on the heat dissipation plate (122). The plurality of connecting plates (123) comprise:

4. The cover assembly (100) of an energy storage tank according to claim 3, characterized in that, The first connecting plate (124); and 5. The cover assembly (100) of an energy storage tank according to claim 3 or 4, characterized in that The second connecting plate (125), the heat dissipation plate (122) has a first side and a second side arranged opposite to each other, the first connecting plate (124) is connected to the first side of the heat dissipation plate (122), and the second connecting plate (125) is connected to the second side of the heat dissipation plate (122).

6. The cover assembly (100) of an energy storage tank according to claim 5, characterized in that, The heat dissipation support (121) further comprises: The first flange (126) is connected to the first connecting plate (124) and arranged to be bent relative to the first connecting plate (124), and the first flange (126) is attached to the inner surface of the cover body (110); and The second flange (127) is connected to the second connecting plate (125) and arranged to be bent relative to the second connecting plate (125), and the second flange (127) is attached to the inner surface of the cover body (110).

7. The cover assembly (100) of an energy storage tank according to claim 6, characterized in that, The first flange (126) is welded to the inner surface of the cover body (110); and / or The second flange (127) is welded to the inner surface of the cover body (110). The plurality of connecting plates (123) further comprise:

8. The cover assembly (100) of an energy storage tank according to claim 7, characterized in that The third connecting plate (128) is located between the first connecting plate (124) and the second connecting plate (125). The heat dissipation plate (122) and the connecting plate (123) are integrally formed to form an integrated heat dissipation support (121).

9. The cover assembly (100) of an energy storage tank according to any one of claims 6-8, characterized in that, The heat dissipation structure (120) further comprises: ​ 10. The cover assembly (100) of an energy storage tank according to any one of claims 3-9, characterized in that, ​ 11. The cover assembly (100) of an energy storage tank according to any one of claims 2-9, characterized in that, ​ A first flexible heat-conductive pad (129) is disposed on a side surface of the heat-dissipation support (121) facing the battery pack (300) and is used to contact the battery pack (300) so that the battery pack (300) transmits heat to the cover (110) through the first flexible heat-conductive pad (129) and the heat-dissipation support (121).

12. The cover assembly (100) of an energy storage tank according to any one of claims 1-11, characterized in that, The heat-dissipation structure (120) has a plurality of battery pack contact areas in the length extension direction thereof, and the plurality of battery pack contact areas are used to contact the plurality of battery packs (300) one by one.

13. A housing assembly (1000) for an energy storage tank, characterized by, It comprises: a shell assembly (200); and the cover assembly (100) of the energy storage box according to any one of claims 1-12, wherein the cover (110) is connected with the shell assembly (200).

14. The housing assembly (1000) of an energy storage tank according to claim 13, wherein, The shell assembly (200) comprises: a shell (210) having an inner surface, the inner surface of the shell (210) being adapted to be disposed towards the battery pack (300), and the inner surface of the shell (210) having a second heat-dissipation surface in contact with the battery pack (300); and a cavity-dividing structure (220) disposed in the shell (210), the cavity-dividing structure (220) and the shell (210) together forming a plurality of separated battery module cavities (234) for accommodating the battery pack (300), the cavity-dividing structure (220) having an inner surface disposed towards the battery pack (300), and the cavity-dividing structure (220) having a third heat-dissipation surface adapted to be in contact with the battery pack (300).

15. The housing assembly (1000) of an energy storage tank according to claim 14, wherein, The cavity-dividing structure (220) comprises: a plurality of rib plates (221) disposed in the shell (210), the plurality of rib plates (221) extending in a first direction and being spaced apart in a second direction, the first direction being disposed perpendicularly to the second direction and parallel to the cover (110); a plurality of pressing plates (222) extending along the second direction and being spaced apart in the first direction, each of the pressing plates (222) being connected to a side of the plurality of rib plates (221) adjacent to the cover (110), and the heat-dissipation structure (120) being spaced apart from the pressing plates (222) in the first direction; and a partition plate (223) connected between two adjacent rib plates (221) and extending along the second direction, the shell (210), the two adjacent rib plates (221), the pressing plate (222) and the partition plate (223) together forming the plurality of battery module cavities (234), and the third heat-dissipation surface being disposed on the partition plate (223).

16. The housing assembly (1000) of an energy storage tank according to claim 14 or 15, characterized in that It further comprises: a buffer (230) comprising: a first buffer portion (231) attached to the second heat-dissipation surface; and a second buffer portion (232) attached to the third heat-dissipation surface. A second buffering portion (232) is attached to the third heat dissipation surface.

17. The housing assembly (1000) of an energy storage tank according to claim 16, wherein, The first buffering portion (231) is formed with a through hole (240) penetrating along its thickness, and the shell assembly (1000) further comprises: A second flexible heat-conductive pad (250) is arranged in the through hole (240) and used to contact the battery pack (300), so that the battery pack (300) transmits heat to the shell (210) through the second flexible heat-conductive pad (250).

18. The housing assembly (1000) of an energy storage tank according to claim 16 or 17, characterized in that, The second buffering portion (232) is formed with a heat dissipation hole (233) penetrating along its thickness.

19. The housing assembly (1000) of an energy storage tank according to claim 18, wherein, The heat dissipation holes (233) are multiple, and multiple heat dissipation holes (233) are distributed on the second buffering portion (232) at intervals.

20. An energy storage tank (2000), characterized by, Comprise: The shell assembly (1000) of the energy storage box according to any one of claims 13-19; And The battery pack (300) is arranged in the shell assembly (1000).

Images