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

Abstract

The utility model discloses a cover body assembly of energy storage box body, shell assembly of energy storage box body and energy storage box body, the cover body assembly of energy storage box body includes: cover body and heat dissipation structure, the cover body has the inner surface, the inner surface of cover body is suitable for setting towards the battery pack, the heat dissipation structure is arranged on the inner surface of cover body and is suitable for setting towards the battery pack in a protruding way, the heat dissipation structure is provided with the heat dissipation structure. The heat dissipation structure is used for making contact with the battery pack so as to transfer heat of the battery pack to the cover body. The heat dissipation structure is arranged between the inner surface of the cover body and the battery pack, so that heat of the battery pack can be transferred to the cover body, heat concentration of the battery pack can be avoided, the performance of the energy storage box can be improved, and the service life of the energy storage box can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a cover assembly of an energy storage box, a shell assembly of the energy storage box and an energy storage box. Background Art

[0002] At present, the demand for energy storage products in households is growing. As a result, the capacity of household energy storage products is getting larger and larger, and the charging and discharging rates are getting higher and higher. In addition, in order to take into account the outdoor usage environment, energy storage products also need to have waterproof functions, which causes the internal modules of energy storage products to generate a lot of heat and are difficult to dissipate heat, thereby affecting the performance of energy storage products.

[0003] In the related art, the main structural form of energy storage products is a combination of end plates and pull rods. Foam is pasted on the mating surface of the end plates of the battery cell module to absorb the dimensional tolerance of the components, which makes it impossible for the mating surface to form a heat dissipation surface. In addition, the surface where the tabs are located must avoid stress damage to the tabs, which results in the tabs being unable to dissipate heat, resulting in insufficient heat dissipation surface of the battery module. In addition, most modules dissipate heat by bonding one side to the shell, which leads to poor heat dissipation effect of the energy storage product. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a cover assembly for an energy storage box, which can improve the performance and service life of the energy storage box.

[0005] The utility model further proposes a shell assembly of an energy storage box.

[0006] The utility model further proposes an energy storage box.

[0007] According to the cover assembly of the energy storage box of the present invention, it includes: a cover and a heat dissipation structure, the cover has an inner surface, the inner surface of the cover is suitable for being set toward the battery pack, the heat dissipation structure is arranged on the inner surface of the cover and is suitable for protruding toward the battery pack, and the heat dissipation structure is used to contact the battery pack to transfer the heat of the battery pack to the cover.

[0008] According to the cover assembly of the energy storage box of the present invention, a heat dissipation structure is provided between the inner surface of the cover and the battery pack. This arrangement can transfer the heat of the battery pack to the cover, thereby avoiding heat concentration in the battery pack, and further improving the performance of the energy storage box and increasing its service life.

[0009] In some examples of the present invention, the heat dissipation structure includes: a heat dissipation bracket, which is installed on the inner surface of the cover and is suitable for protruding toward the battery pack.

[0010] In some examples of the present invention, the heat dissipation bracket includes: a heat dissipation plate and a connecting plate, the heat dissipation plate having a first heat dissipation surface facing the battery pack, and the connecting plate being connected between the heat dissipation plate and the inner surface of the cover body so that the heat dissipation plate is suitable for protruding toward the battery pack relative to the inner surface of the cover body.

[0011] In some examples of the present invention, the connecting plate is bent relative to the heat dissipation plate, and the heat dissipation plate is constructed in a flat plate shape.

[0012] In some examples of the present invention, there are multiple connecting plates, and the multiple connecting plates are arranged at intervals on the heat dissipation plate.

[0013] In some examples of the present invention, the plurality of connecting plates include: a first connecting plate and a second connecting plate, the heat dissipation plate has a first side and a second side arranged opposite to each other, the first connecting plate is connected to the first side of the heat dissipation plate, and the second connecting plate is connected to the second side of the heat dissipation plate.

[0014] In some examples of the present invention, the heat dissipation bracket also includes: a first flange and a second flange, the first flange is connected to the first connecting plate and is bent relative to the first connecting plate, the first flange is attached to the inner surface of the cover body, the second flange is connected to the second connecting plate and is bent relative to the second connecting plate, and the second flange is attached to the inner surface of the cover body.

[0015] In some examples of the present invention, the first flange is welded to the inner surface of the cover; and the second flange is welded to the inner surface of the cover.

[0016] In some examples of the present invention, the plurality of connecting plates further include: a third connecting plate, wherein the third connecting plate is located between the first connecting plate and the second connecting plate.

[0017] In some examples of the present invention, the heat dissipation plate and the connecting plate are integrally formed to form an integrated heat dissipation bracket.

[0018] In some examples of the present invention, the heat dissipation structure also includes: a first flexible thermal pad, which is arranged on a side surface of the battery pack and is used to contact the battery pack so that the battery pack transfers heat to the cover through the first flexible thermal pad and the heat dissipation bracket.

[0019] In some examples of the present invention, the heat dissipation structure has a plurality of battery pack contact areas in a length extension direction thereof, and the plurality of battery pack contact areas are used for contacting the plurality of battery packs in a one-to-one correspondence.

[0020] The shell assembly of the energy storage box according to the present invention comprises: a shell component and the cover component of the energy storage box described above, wherein the cover is connected to the shell component.

[0021] In some examples of the present invention, the shell assembly includes: a shell and a cavity structure, the shell having an inner surface, the inner surface of the shell being suitable for being set toward the battery pack, the inner surface of the shell having a second heat dissipation surface in contact with the battery pack, the cavity structure being arranged in the shell, the cavity structure and the shell together forming a plurality of separated battery pack cavities, the battery pack cavities being used to accommodate the battery pack, the cavity structure having an inner surface, the inner surface of the cavity structure being set toward the battery pack, and the cavity structure having a third heat dissipation surface in contact with the battery pack.

[0022] In some examples of the present invention, the cavity structure includes: multiple ribs, multiple pressure plates and partitions, multiple ribs are arranged in the shell, multiple ribs extend in the first direction and are spaced apart in the second direction, the first direction is perpendicular to the second direction and parallel to the cover body, multiple pressure plates extend along the second direction and are spaced apart in the first direction, each pressure plate is connected to one side of the multiple ribs adjacent to the cover body, the heat dissipation structure and the pressure plate are spaced apart in the first direction, the partition is connected between two adjacent ribs and extends along the second direction, the shell, two adjacent ribs, the pressure plate and the partition together form multiple battery pack cavities, and the third heat dissipation surface is arranged on the partition.

[0023] In some examples of the present invention, it also includes: a buffer component, the buffer component includes: a first buffer portion and a second buffer portion, the first buffer portion is attached to the second heat dissipation surface, the second buffer portion is connected to the first buffer portion and is bent relative to the first buffer portion, and the second buffer portion is attached to the third heat dissipation surface.

[0024] In some examples of the present invention, the first buffer portion is formed with a through hole extending through its thickness, and the shell assembly further includes: a second flexible thermal pad, which is disposed in the through hole and is used to contact the battery pack so that the battery pack transfers heat to the shell through the second flexible thermal pad.

[0025] In some examples of the present invention, the second buffer portion is formed with a heat dissipation hole extending through the thickness thereof.

[0026] In some examples of the present invention, there are multiple heat dissipation holes, and the multiple heat dissipation holes are distributed at intervals on the second buffer portion.

[0027] The energy storage box according to the present invention comprises: the above-mentioned shell assembly of the energy storage box and a battery pack, wherein the battery pack is arranged in the shell assembly.

[0028] 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

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 is a cross-sectional view of an energy storage box according to an embodiment of the present utility model;

[0031] Figure 2 This is a partial structural diagram of the housing assembly of the energy storage box according to an embodiment of the present utility model from a first angle;

[0032] Figure 3 It is a schematic diagram of the partial structure of the shell assembly of the energy storage box according to the second angle of the embodiment of the present utility model.

[0033] Reference numerals:

[0034] 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 pad;

[0035] 200, housing assembly; 210, housing; 220, chamber structure; 221, rib; 222, pressure plate; 223, partition; 230, buffer; 231, first buffer portion; 232, second buffer portion; 233, heat dissipation hole;

[0036] 300. Battery pack. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0038] Reference below Figure 1-Figure 3 The cover assembly 100 of an energy storage box according to an embodiment of the present invention is described. The cover assembly 100 of the energy storage box is applied to the energy storage box.

[0039] like Figure 1As shown, the cover assembly 100 of the energy storage box according to the present invention includes: a cover 110 and a heat dissipation structure 120, the cover 110 has an inner surface, the inner surface of the cover 110 is suitable for being arranged toward the battery pack 300 in the energy storage box, the heat dissipation structure 120 is arranged on the inner surface of the cover 110 and is suitable for protruding toward the battery pack 300, and 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.

[0040] It can be 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 the heat dissipation structure 120 extends in the direction of the battery pack 300, so that the side of the heat dissipation structure 120 away from the inner surface of the cover 110 can abut against the battery pack 300. This arrangement can make the heat dissipation structure 120 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 transferred to the outer surface of the cover 110 to contact the air, so that the cover 110 and the heat dissipation structure 120 can achieve heat conduction to the battery pack 300, thereby improving the performance of the energy storage box and increasing its service life.

[0041] Therefore, by setting the heat dissipation structure 120 between the inner surface of the cover 110 and the battery pack 300, this setting can transfer the heat of the battery pack 300 to the cover 110, thereby avoiding the heat concentration of the battery pack 300, and further improving the performance of the energy storage box and increasing the service life.

[0042] Among them, such as Figure 1 As shown, the heat dissipation structure 120 includes a heat dissipation bracket 121, which is mounted on the inner surface of the cover 110 and is adapted to protrude toward the battery pack 300. That is, the heat dissipation bracket 121 is located on the inner surface of the cover 110 and extends toward the battery pack 300, so that the side of the heat dissipation bracket 121 away from the inner surface of the cover 110 abuts against the battery pack 300. This arrangement allows the heat dissipation bracket 121 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 bracket 121, and then transferred to the outer surface of the cover 110 to contact the air. This allows the heat dissipation bracket 121 to conduct heat to the battery pack 300, thereby improving the performance of the energy storage box and increasing its service life.

[0043] In addition, if Figure 1As shown, 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. The connecting plate 123 is bent relative to the heat dissipation plate 122 so that the heat dissipation plate 122 protrudes toward 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 provided with a first heat dissipation surface facing the battery pack 300, so that the heat of the battery pack 300 can be 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 the connecting plate 123 is bent relative to the heat dissipation plate 122 toward the inner surface of the shell 210. This arrangement allows the connecting plate 123 to be arranged between the inner surface of the shell 210 and the heat dissipation plate 122, so that the heat dissipation plate 122 can be raised away from the inner surface of the cover body 110 and abut against the battery pack 300, thereby allowing the heat of the battery pack 300 to be transferred to the first heat dissipation surface, and then to the heat dissipation plate 122 and the connecting plate 123 in turn, and finally to the outer surface of the shell 210 to contact the air. For example, the heat sink 122 is constructed in a flat plate shape. This arrangement can increase the contact area between the heat sink 122 and the battery pack 300, so that the heat of the battery pack 300 can be transferred to the connecting plate 123 and the shell 210 in turn through the heat sink 122, thereby avoiding heat concentration in the battery pack 300.

[0044] In particular, Figure 1 As shown, there are multiple connecting plates 123, which are spaced apart on the heat sink 122. The multiple connecting plates 123 include a first connecting plate 124 and a second connecting plate 125. The heat sink 122 has a first side and a second side disposed opposite each other. The first connecting plate 124 is connected to the first side of the heat sink 122, and the second connecting plate 125 is connected to the second side of the heat sink 122. In other words, the multiple connecting plates 123 are spaced apart and all connected to the heat sink 122, so that heat from the battery pack 300 can be transferred to the heat sink 122 and then to the multiple connecting plates 123. The first connecting plate 124 and the second connecting plate 125 are located on the left and right sides of the heat sink 122, respectively. This allows heat from the battery pack 300 to be transferred to the heat sink 122 and then to the first connecting plate 124 and the second connecting plate 125, respectively, thereby preventing heat concentration in the battery pack 300.

[0045] In addition, if Figure 1As shown, the heat dissipation bracket 121 also includes: a first flange 126 and a second flange 127, the first flange 126 is connected to the first connecting plate 124 and is bent relative to the first connecting plate 124, the first flange 126 is attached to the inner surface of the cover body 110, the second flange 127 is connected to the second connecting plate 125 and is bent relative to the second connecting plate 125, and the second flange 127 is attached to the inner surface of the cover body 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, and the first flange 126 is bent to the left relative to the first connecting plate 124, and the second flange 127 is arranged on the side of the second connecting plate 125 close to the inner surface of the shell 210, 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 bracket 121, the first flange 126 and the second flange 127 extend relatively far apart, 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 heat concentration of the battery pack 300.

[0046] In particular, Figure 1 As shown, 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 bracket 121 and the inner surface of the cover 110 more firmly, thereby improving the overall structural strength of the cover assembly 100 of the energy storage box.

[0047] In addition, if Figure 1 As shown, the plurality of connecting plates 123 further include a third connecting plate 128, which is located between the first connecting plate 124 and the second connecting plate 125. In other words, the third connecting plate 128 is disposed on the heat sink 122 and 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, thereby allowing heat from the battery pack 300 to be transferred to the heat sink 122, and then to the third connecting plate 128 and the housing 210, thereby preventing heat concentration in the battery pack 300.

[0048] In particular, Figure 1 As shown, the heat sink 122 and the connecting plate 123 are integrally formed to form an integrated heat sink bracket 121. This arrangement facilitates the disassembly and installation of the heat sink bracket 121, and can also form a cavity for the heat sink bracket 121, thereby meeting the waterproof requirements and improving the heat dissipation efficiency of the heat sink bracket 121.

[0049] In addition, if Figure 1 As shown, the heat dissipation structure 120 further includes a first flexible thermal pad 129, which is disposed on a surface of the heat dissipation bracket 121 facing the battery pack 300 and is configured to contact the battery pack 300, allowing the battery pack 300 to transfer heat to the cover 110 through the first flexible thermal pad 129 and the heat dissipation bracket 121. It will be appreciated that the first flexible thermal pad 129 is located between the heat dissipation plate 122 and the battery pack 300, and the first flexible thermal pad 129 abuts the first heat dissipation surface. This allows heat from the battery pack 300 to be transferred through the first flexible thermal pad 129 to the first heat dissipation surface, 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 housing 210 for heat conduction, thereby preventing heat concentration in the battery pack 300. For example, the first flexible thermal pad 129 is made of silica gel, thereby ensuring the thermal conductivity of the first flexible thermal pad 129 and preventing heat concentration in the battery pack 300 .

[0050] The heat dissipation structure 120 has multiple battery pack contact areas along its length, each of which is configured to contact the battery packs 300 in a one-to-one correspondence. That is, each battery pack 300 contacts a corresponding battery pack contact area. The heat dissipation structure 120 extends vertically, and each heat dissipation structure 120 contacts a battery pack 300. This allows heat from the battery packs 300 to be transferred to the cover 110 through the heat dissipation structure 120, thereby preventing heat concentration within the battery packs 300.

[0051] like Figure 1 and Figure 2 As shown, the shell assembly of the energy storage box according to the present invention includes: a shell assembly 200 and a cover assembly 100 of the energy storage box of the above embodiment. The cover 110 is connected to the shell assembly 200, so that an installation space can be formed between the cover 110 and the shell assembly 200, thereby facilitating the arrangement of the battery pack 300 in the installation space. By arranging a heat dissipation structure 120 between the inner surface of the cover 110 and the battery pack 300, such an arrangement can transfer the heat of the battery pack 300 to the cover 110, thereby avoiding heat concentration in the battery pack 300, and thus improving the performance of the energy storage box and increasing its service life.

[0052] Among them, such as Figure 2As shown, the shell assembly 200 includes: a shell 210 and a cavity structure 220, the shell 210 has an inner surface, the inner surface of the shell 210 is set toward 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 structure 220 is set in the shell 210, the cavity structure 220 and the shell 210 together form a plurality of separated battery module cavities, the battery module cavities are used to accommodate the battery pack 300, the cavity structure 220 has an inner surface, the inner surface of the cavity structure 220 is set toward the battery pack 300, and the cavity structure 220 has a third heat dissipation surface in contact with the battery pack 300.

[0053] It can be understood that the shell 210 and the cavity structure 220 constitute the main structure of the shell assembly 200, and a second heat dissipation surface is provided on the inner surface of the shell 210, and the second heat dissipation surface is provided toward the battery pack 300, so that the heat of the battery pack 300 can be transferred to the shell 210 through the second heat dissipation surface, and finally transferred to the outer surface of the shell 210 to contact the air. The cavity structure 220 is located in the shell 210, so that the cavity structure 220 can divide the internal space of the shell 210 into multiple battery module cavities. The multiple battery module cavities can limit the battery pack 300, so as to facilitate the battery pack 300 to be set in the battery module cavity, and the cavity structure 220 is provided with a third heat dissipation surface toward the inner surface of the battery pack 300, so that the heat of the battery pack 300 can be transferred to the cavity structure 220 through the third heat dissipation surface, thereby avoiding heat concentration of the battery pack 300.

[0054] In addition, if Figure 1-Figure 3 As shown, the cavity structure 220 includes: a plurality of ribs 221, a plurality of pressure plates 222 and a partition 223, a plurality of ribs 221 are arranged in the shell 210, a plurality of ribs 221 extend in the first direction and are spaced apart in the second direction, the first direction is perpendicular to the second direction and parallel to the cover body 110, a plurality of pressure plates 222 extend along the second direction and are spaced apart in the first direction, each pressure plate 222 is connected to a side of the plurality of ribs 221 adjacent to the cover body 110, the heat dissipation structure 120 and the pressure plate 222 are spaced apart in the first direction, the partition 223 is connected between two adjacent ribs 221 and extends along the second direction, the shell 210, two adjacent ribs 221, the pressure plate 222 and the partition 223 together form a plurality of battery module cavities, and the third heat dissipation surface is arranged on the partition 223.

[0055] That is to say, multiple ribs 221, multiple pressure plates 222 and partitions 223 constitute the main structure of the chamber structure 220, the first direction is the left-right direction, and the second direction is the up-down direction. Multiple ribs 221 are extended and arranged in the left-right direction, and multiple ribs 221 are spaced apart up and down, so that the multiple ribs 221 can be divided into multiple battery module cavities in the internal space of the shell 210, thereby facilitating the battery pack 300 to be arranged in the multiple battery module cavities, and the cover body 110 is arranged at the opening of the shell 210, so that the cover body 110 and the shell 210 can form a sealed cavity structure, thereby ensuring the waterproof requirements of the shell 210 assembly of the energy storage box body, multiple pressure plates 222 are arranged in the up-down direction, and multiple pressure plates 222 are spaced apart left and right, so as to expand the coverage area of ​​the multiple pressure plates 222 on the battery pack 300, and each pressure plate 222 is set The plurality of ribs 221 are arranged on one side close to the cover body 110, so that the heat of the battery pack 300 can be transferred to the cover body 110 through the plurality of pressure plates 222, and pressure plates 222 are arranged on both sides of the left and right sides of the battery pack 300 close to the cover body 110, so that the battery pack 300 can be more firmly arranged in the battery module cavity, the heat dissipation structure 120 is located between the two pressure plates 222 on the battery pack 300 close to the cover body 110, the partition 223 is located between the two adjacent ribs 221, and the partition 223 extends in the up and down direction, so that the internal space of the shell 210 can be divided into multiple battery module cavities, thereby facilitating the battery pack 300 to be arranged in multiple battery module cavities, and a third heat dissipation surface is provided on the partition 223, so that the heat of the battery pack 300 can be transferred to the sub-cavity structure 220 through the third heat dissipation surface, thereby avoiding heat concentration of the battery pack 300. For example, multiple pressure plates 222 and multiple ribs 221 are fixed with screws. This arrangement allows the multiple pressure plates 222 and multiple ribs 221 to press the battery pack 300, thereby preventing the battery pack 300 from moving in the battery module cavity. It also allows the battery pack 300 to fit tightly against the shell assembly 200, thereby avoiding heat concentration in the battery pack 300.

[0056] In addition, if Figure 2 and Figure 3As shown, the battery pack 300 further includes a buffer member 230, which includes a first buffer portion 231 and a second buffer portion 232. The first buffer portion 231 is attached to the second heat dissipation surface, the second buffer portion 232 is connected to the first buffer portion 231 and bent relative to the first buffer portion 231, and the second buffer portion 232 is attached to the third heat dissipation surface. It is understood that the first buffer portion 231 is arranged in a left-right direction and is in contact with the second heat dissipation surface, thereby allowing heat from the battery pack 300 to be transferred to the second heat dissipation surface through the first buffer portion 231. The second buffer portion 232 extends in a vertical direction and is in contact with the third heat dissipation surface, thereby allowing heat from the battery pack 300 to be transferred to the third heat dissipation surface through the second buffer portion 232, thereby preventing heat concentration in the battery pack 300. For example, the buffer member 230 is a protective foam, which facilitates heat transfer from the buffer member 230 and achieves a lightweight design.

[0057] Among them, such as Figure 2 As shown, the first buffer portion 231 is formed with a through-hole extending through its thickness, and the second buffer portion 232 is formed with a heat dissipation hole 233 extending through its thickness. The housing 210 assembly also includes a second flexible thermal pad, which is disposed within the through-hole and in contact with the battery pack 300, allowing the battery pack 300 to transfer heat to the housing 210 through the second flexible thermal pad. In other words, the provision of through-holes or heat dissipation holes 233 in the first and second buffer portions 231, 232 enhances the heat dissipation capabilities of the first and second buffer portions 231, 232. The second flexible thermal pad, located within the through-hole, allows the battery pack 300 to transfer heat to the housing 210 through the second flexible thermal pad. For example, the second flexible thermal pad is made of silicone, and the buffer 230 is a protective foam with a square opening on one side. The second flexible thermal pad can enter the buffer 230 through the square opening, thereby enhancing the thermal conductivity of the buffer 230.

[0058] In particular, Figure 2 As shown, there are multiple heat dissipation holes 233, and the multiple heat dissipation holes 233 are spaced apart on the second buffer portion 232. This arrangement allows the heat of the battery pack 300 to be transferred to the partition 223 through the multiple heat dissipation holes 233, thereby avoiding heat concentration in the battery pack 300.

[0059] In addition, Figure 1 and Figure 2As shown, the heat dissipation structures 120 extend along the second direction, and each heat dissipation structure 120 contacts the battery packs 300 within a plurality of battery module cavities spaced apart along the second direction. It will be appreciated that the heat dissipation structures 120 extend in the vertical direction, and each heat dissipation structure 120 contacts the battery packs 300 spaced apart above and below, thereby allowing heat from the battery packs 300 to be transferred to the cover 110 through the heat dissipation structures 120, thereby preventing heat concentration in the battery packs 300.

[0060] Specifically, the shell 210 assembly of the energy storage box can form three heat dissipation paths. The first heat dissipation path is: the heat of the battery pack 300 is transferred to the heat dissipation structure 120 through the first flexible thermal pad 129, and then transferred to the outer surface of the cover 110 to contact the air; the second heat dissipation path is: the heat of the battery pack 300 is transferred to the shell 210 through the second heat dissipation surface, and finally transferred to the outer surface of the shell 210 to contact the air; the third heat dissipation path is: the heat of the battery pack 300 is transferred to the partition 223 and multiple ribs 221 through the buffer part 230, and then transferred to the outer surface of the shell 210 to contact the air.

[0061] According to the energy storage box of the present invention, it includes: the shell assembly of the energy storage box of the above embodiment and the battery pack 300, the battery pack 300 is arranged in the shell assembly, so that the shell assembly can limit the battery pack 300, thereby facilitating the installation of the battery pack 300, the cover body 110 is connected to the shell assembly 200, so that an installation space can be formed between the cover body 110 and the shell assembly 200, thereby facilitating the battery pack 300 to be arranged in the installation space, and a heat dissipation structure 120 is provided between the inner surface of the cover body 110 and the battery pack 300. This arrangement can transfer the heat of the battery pack 300 to the cover body 110, thereby avoiding heat concentration in the battery pack 300, thereby improving the performance of the energy storage box and increasing the service life.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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 should not be understood as a limitation to the present invention.

[0063] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact via another feature between them. In the description of the present invention, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0064] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cover assembly of an energy storage box, characterized in that: include: A cover body, the cover body having an inner surface, the inner surface of the cover body being suitable for being arranged toward the battery pack; A heat dissipation structure is arranged on the inner surface of the cover body and is suitable for being protruded toward the battery pack, and the heat dissipation structure is used to contact the battery pack to transfer the heat of the battery pack to the cover body.

2. The cover assembly of the energy storage box according to claim 1, characterized in that: The heat dissipation structure comprises: A heat dissipation bracket is installed on the inner surface of the cover and is suitable for protruding toward the battery pack.

3. The cover assembly of the energy storage box according to claim 2, characterized in that: The heat dissipation bracket comprises: A heat dissipation plate, the heat dissipation plate having a first heat dissipation surface facing the battery pack; A connecting plate is connected between the heat dissipation plate and the inner surface of the cover body so that the heat dissipation plate is suitable for protruding toward the battery pack relative to the inner surface of the cover body.

4. The cover assembly of the energy storage box according to claim 3, characterized in that: The connecting plate is bent relative to the heat dissipation plate, and the heat dissipation plate is structured in a flat plate shape.

5. The cover assembly of the energy storage box according to claim 3, characterized in that: There are a plurality of connecting plates, and the connecting plates are arranged on the heat sink at intervals.

6. The cover assembly of the energy storage box according to claim 5, characterized in that: The plurality of connecting plates include: A first connecting plate and a second connecting plate, the heat dissipation plate has a first side and a second side arranged opposite to each other, the first connecting plate is connected to the first side of the heat dissipation plate, and the second connecting plate is connected to the second side of the heat dissipation plate.

7. The cover assembly of the energy storage box according to claim 6, characterized in that: The heat dissipation bracket also includes: a first flange, the first flange being connected to the first connecting plate and being bent relative to the first connecting plate, the first flange being attached to the inner surface of the cover body; The second flange is connected to the second connecting plate and bent relative to the second connecting plate, and the second flange is attached to the inner surface of the cover.

8. The cover assembly of the energy storage box according to claim 7, characterized in that: 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 body.

9. The cover assembly of the energy storage box according to claim 6, characterized in that: The plurality of connecting plates further comprises: A third connecting plate is located between the first connecting plate and the second connecting plate.

10. The cover assembly of the energy storage box according to claim 3, characterized in that: The heat dissipation plate and the connecting plate are integrally formed to form an integrated heat dissipation bracket.

11. The cover assembly of the energy storage box according to any one of claims 2 to 9, characterized in that: The heat dissipation structure also includes: A first flexible thermally conductive pad is disposed on a surface of the heat dissipation bracket facing the battery pack and is used to contact the battery pack so that the battery pack transfers heat to the cover through the first flexible thermally conductive pad and the heat dissipation bracket.

12. The cover assembly of the energy storage box according to claim 1, characterized in that: 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 for contacting with the plurality of battery packs in a one-to-one correspondence.

13. A housing assembly of an energy storage box, characterized in that: include: Shell assembly; The cover assembly of the energy storage box according to any one of claims 1 to 12, wherein the cover is connected to the shell assembly.

14. The housing assembly of the energy storage box according to claim 13, characterized in that: The housing assembly comprises: A shell, the shell having an inner surface, the inner surface of the shell being suitable for being arranged toward the battery pack, and the inner surface of the shell having a second heat dissipation surface in contact with the battery pack; A sub-cavity structure, wherein the sub-cavity structure is arranged in the shell, and the sub-cavity structure and the shell together form a plurality of separated battery pack cavities, wherein the battery pack cavities are used to accommodate the battery packs, the sub-cavity structure has an inner surface, and the inner surface of the sub-cavity structure is arranged toward the battery pack, and the sub-cavity structure has a third heat dissipation surface suitable for contacting the battery pack.

15. The housing assembly of the energy storage box according to claim 14, characterized in that: The chamber structure comprises: A plurality of ribs, wherein the plurality of ribs are arranged in the housing, the plurality of ribs extend in a first direction and are arranged at intervals in a second direction, the first direction is arranged perpendicular to the second direction and is parallel to the cover; A partition is connected between two adjacent ribs and extends along the second direction. The shell, the two adjacent ribs and the partition together form a plurality of battery pack cavities. The third heat dissipation surface is arranged on the partition.

16. The housing assembly of the energy storage box according to claim 15, characterized in that: Also includes: A buffer member, the buffer member comprising: a first buffer portion, the first buffer portion being attached to the second heat dissipation surface; The second buffer portion is attached to the third heat dissipation surface.

17. The housing assembly of the energy storage box according to claim 16, characterized in that: The first buffer portion is formed with a through hole penetrating along the thickness thereof, and the housing assembly further comprises: A second flexible thermally conductive pad is disposed in the through hole and is used to contact the battery pack, so that the battery pack transfers heat to the housing through the second flexible thermally conductive pad.

18. The housing assembly of the energy storage box according to claim 16, characterized in that: The second buffer portion is formed with a heat dissipation hole penetrating along the thickness thereof.

19. The housing assembly of the energy storage box according to claim 18, characterized in that: There are a plurality of heat dissipation holes, and the plurality of heat dissipation holes are distributed at intervals on the second buffer portion.

20. An energy storage box, characterized in that: include: The housing assembly of the energy storage box according to any one of claims 13 to 19; A battery pack is disposed in the housing assembly.

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