A heat dissipation structure

Abstract

The application discloses a heat dissipation structure, relates to the technical field of battery energy storage, and comprises a first main body, a second main body and a fixing device. The first main body comprises four side walls and a bottom plate. The second main body is arranged above the first main body. The fixing device is arranged on the first main body and comprises a fixing plate. One side of the fixing plate is provided with a mounting portion and a heat dissipation tooth. The mounting portion is used for mounting the fixing plate on the side wall. A polarity pressure covering sheet is arranged on the fixing device and comprises a plurality of pressure covering portions. One side edge of the polarity pressure covering sheet is provided with a bending portion. The bending portion is attached to the other side of the fixing plate. The pressure covering connection of the polarity pressure covering sheet is adopted to replace the existing cable connection, the contact area is increased, the bending portion is attached to the fixing seat, the heat dissipation effect is further increased through the heat dissipation tooth of the fixing plate, and the problem of insufficient heat dissipation of the battery pack during current collection in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery energy storage, in particular to a heat dissipation structure. BACKGROUND

[0002] Energy storage systems are a kind of energy storage technology that arises from the need to store energy through devices or physical media for use when needed, containing a container composed of several battery packs in parallel; but with the development of energy storage technology and the increasing demand for energy storage in more and more occasions, the capacity of the battery is rising, and the voltage is also rising, and the high processing capacity of the battery pack on the DC side results in higher heat generation.

[0003] The existing cooling method of setting air conditioners and exhaust openings and the like air cooling in cooperation with the liquid cooling plate under the battery pack cannot meet the heat dissipation demand, and the existing sealing design of the battery pack due to the need for cold and moisture prevention also hinders heat dissipation, resulting in heat concentration during actual battery pack confluence and inability to dissipate heat quickly, which poses a safety hazard in use.

[0004] Therefore, a new heat dissipation structure is needed to complete the heat dissipation of the battery pack during confluence. SUMMARY

[0005] The purpose of the present application is to solve the problem of insufficient heat dissipation of the battery pack during confluence in the prior art.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] The first body, the second body, the fixing device, and the polarity pressure covering sheet one; the first body includes four side walls and a bottom plate; the second body is arranged above the first body; the fixing device is arranged on the first body, and the fixing device includes a fixing plate, one side of the fixing plate is provided with a mounting portion and a heat dissipation tooth, the mounting portion is used for mounting the fixing plate on the side wall; the polarity pressure covering sheet one is arranged on the fixing device and includes a plurality of pressure covering portions, one side edge of the polarity pressure covering sheet one is provided with a bending portion one which is attached to the other side of the fixing plate. Further, in the embodiment of the present application, two of the side walls are provided with a folding portion one and a positioning hole, and the other two side walls are provided with a bending portion one, and the bending portion is provided with a plurality of mounting holes one which are used for mounting the second body.

[0008] Further, in the embodiment of the present application, the bottom plate is provided with a plurality of rib plates which are used for leaving a heat dissipation space for the polarity pressure covering sheet two arranged on the bottom plate.

[0009] Further, in the embodiment of the present application, the second body includes a plurality of wave-shaped cover plates, and the wave-shaped cover plates are provided at both ends with a plurality of mounting holes two which are used for fixing and mounting the wave-shaped cover plates on the bending portion one in cooperation with the mounting holes one.

[0010] Further, in the embodiment of the present application, the second bottom of the bending part is provided with a plurality of positioning clamping grooves one, and the two sides are provided with a bending part three.

[0011] Further, in the embodiment of the present application, the fixing plate is provided with a plurality of positioning clamping grooves two, and the position and shape of the positioning clamping grooves two correspond to the positioning clamping grooves one.

[0012] Further, in the embodiment of the present application, the two sides of the fixing plate are provided with a recess one, and the recess one is used to accommodate the bending part three.

[0013] Further, in the embodiment of the present application, the fixing device further comprises a pressing plate, and the pressing plate is used to cooperate with the fixing plate to fix the position of the polarity pressure covering piece one.

[0014] Further, in the embodiment of the present application, the pressing plate is provided with a plurality of fixing parts and a plurality of docking parts, the number of the fixing parts corresponds to the number of the positioning holes, the number of the docking parts corresponds to the clamping grooves one, and the docking parts press the bending part three in cooperation with the recess one.

[0015] The beneficial effects of the present application are: first, the polarity pressure covering piece one is designed in the battery pack, the connection mode of the polarity pressure covering piece covering the polarity end of the battery cell is adopted to replace the welding connection mode, the heat generated by the welding layer to the polarity end of the battery cell is reduced, the heat dissipation effect of the polarity end of the battery cell is improved, and the bending part one is arranged on the polarity pressure covering piece one, which is used for the connection of the battery pack and the battery pack, the heat dissipation effect of the battery pack and the battery pack during connection is improved by increasing the contact area and exposing the connection, and the current processing capacity is also increased; then the fixing plate is arranged to cooperate with the pressing plate to make the bending part close to the other side of the fixing plate, and the position of the bending part one is fixed, the stable installation of the battery pack and the battery pack is ensured, and the heat dissipation teeth are arranged on one side of the fixing plate to dissipate heat, the heat dissipation effect of air cooling is further increased, and the heat dissipation structure of the battery pack can cooperate with air cooling to complete the heat dissipation of the direct current side battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the battery pack of the embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of the first main body in the embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of the polarity pressure covering piece one in the embodiment of the present application.

[0019] Figure 4 It is a schematic diagram of the second main body in the embodiment of the present application.

[0020] Figure 5 It is a schematic diagram of the fixing plate in the embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the objects, technical solutions and advantages of the present application clearer, more complete and more apparent, the embodiments of the present application are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present application and not all the embodiments, which are used only to explain the embodiments of the present application and not to limit the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are presented to provide a thorough understanding of the embodiments. However, it is obvious that these embodiments can not be limited to these specific details in practice. In some examples, well-known battery pack structures are not described in detail to avoid unnecessarily complicating the embodiments. In addition, all embodiments can be used in combination with each other. Embodiments

[0025] A heat dissipation structure, such as Figure 1 and Figure 5As shown, it includes: a first body 1, a second body 4, a fixing device, and a polarity pressing piece 2; the first body 1 includes four side walls and a bottom plate; the second body 4 is arranged on the first body 1; the fixing device is arranged on the first body 1, and the fixing device includes a fixing plate 5, and a mounting portion 502 and a heat dissipation tooth 501 are provided on one side of the fixing plate 5, and the mounting portion 502 is used to set the fixing plate 5 on the side wall; the polarity pressing piece 2 is arranged on the fixing device, including a plurality of pressing portions 201, and a bending portion 101 is provided on one side of the polarity pressing piece 2.

[0026] Among them, the polarity pressing sheet 1 2 is used to contact the polarity end of the battery cell, replacing the traditional welding connection method, reducing the resistance of the welding layer to the heat generated by the polarity end of the battery cell, improving the heat dissipation effect of the polarity end of the battery cell in the battery pack, and at the same time improving the safety performance of the battery pack, without considering the influence of the cold and humid environment for sealing design; the bending portion 203 of the polarity pressing sheet 1 2 is used to connect the battery pack to the battery pack. Compared with the existing connection method, the contact area of ​​the connection is increased and the contact point is exposed, further improving the heat dissipation effect of the connection between the battery pack and the battery pack; the fixing plate 5 is used to place the bending portion 203, and is provided with heat dissipation teeth 501 for heat dissipation treatment of the bending portion 203 attached to the fixing plate 5, further improving the heat dissipation effect of the connection between the battery pack and the battery pack, so that the heat dissipation structure can cooperate with air cooling such as air conditioning to complete the heat dissipation of the battery pack with high processing capacity, solving the problem that some cooling methods in the existing technology cannot complete the heat dissipation when the battery pack is converged.

[0027] Specifically, such as Figure 2 As shown, two side walls are provided with a folding portion 102 and a positioning hole 103, and the other two side walls are provided with a bending portion 101. The bending portion is provided with a plurality of mounting holes 105 for mounting the second main body 4, and the folding portion 102 is used to facilitate the installation of the fixing plate 5; since the connection method of the polarity pressing sheet pressing the polarity end of the battery cell brings sufficient safety performance, the first main body 1 can adopt a non-sealed design, and the side walls are formed by folding, so that ventilation space can be reserved at the junction of the side walls, thereby improving the heat dissipation effect of the upper polarity pressing plate and making the structure of the first main body 1 simpler; a plurality of ribs 104 are provided at the bottom of the first main body 1, which are used to reserve heat dissipation space for the polarity pressing sheet 2 set on the bottom plate.

[0028] Specifically, such as Figure 3 As shown, a plurality of positioning slots 1 202 are provided at the bottom of the bending portion 203, and bending portions 3 204 are provided on both sides, which are used to cooperate with the fixing device to complete the fixation of the bending portion 203, so that the bending portion 203 can fit the fixing plate 5, and the heat dissipation teeth 501 can dissipate heat for the bending portion 203. A bending portion 4 205 is also provided at the bottom of the bending portion 203.

[0029] Specifically, in order to be able to compress the bending part two 203, the fixing device further comprises a pressing plate 3, which is provided with a plurality of fixing parts and a plurality of butt joint parts 504, the number of fixing parts corresponds to the number of positioning holes 103, and the number of butt joint parts 504 corresponds to the card slot one 202. The butt joint part 504 cooperates with the recess part one 505 to compress the bending part four 205, and the fixing part is used to fix the fixing device on the first main body 1, including a threaded rod, cooperating with a nut to be fixed, or setting an elastic barb on the fixing part, which can fix the fixing device on the side wall of the first main body 1 through the positioning hole 103.

[0030] Specifically, the polarity cover sheet one 2 is provided with a plurality of mounting holes two 206 and mounting holes three 207, the mounting holes two are used for fixing the polarity cover sheet one 2, and the mounting holes three 207 are used for facilitating positioning and installation of the polarity cover sheet one 2.

[0031] Specifically, as shown in Figure 4 The second main body 4 comprises a plurality of wave-shaped cover plates 401, both ends of the wave-shaped cover plate 401 are provided with a plurality of mounting holes four 403, the mounting holes four 403 are used for fixing and installing the wave-shaped cover plate 401 on the bending part one 101 in cooperation with the mounting holes one 105, the wave-shaped cover plate 401 is provided with a plurality of trapezoidal protrusions 402, forming a wave-shaped cross section, both ends of the wave-shaped plate are provided with flanges or bends with different heights, further improving the heat dissipation effect of the contact part of the cover sheet and the battery cell.

[0032] Specifically, as shown in Figure 5 The upper end surface of the mounting part 502 is provided with a plurality of recesses, which are used for further enhancing the heat dissipation of the polarity cover sheet one 2 arranged on the fixing device, and the bottom of the mounting part 502 is further provided with a card slot two 503, which accommodates the side wall of the first main body 1, and is used to determine the position of the fixing device; one end of the mounting part 502 can be further provided with a butt joint part 504, which is used to butt joint the position of the mounting plate of the polarity cover sheet one 2.

[0033] Specifically, the bottom of the fixing plate 5 is further provided with a card slot three 506, which is located in the card slot one 202, which is used to facilitate the installation and fixation of the pressing plate 3.

[0034] First, the polarity pressure cover piece 2 is designed in the battery pack, the connection mode of the polarity pressure cover piece is used to replace the welding connection mode to press the polarity end of the battery cell, the heat generated by the welding layer to the polarity end of the battery cell is reduced, the heat dissipation effect of the polarity end of the battery cell is improved, and the bending part 101 is arranged on the polarity pressure cover piece 2, which is used for the connection of the battery pack and the battery pack, the contact area is increased, the connection is exposed, the heat dissipation effect of the battery pack and the battery pack is improved when connected, and the current processing capacity is also increased; then the fixed plate 5 is arranged to cooperate with the pressing plate 3 to make the bending part tightly adhere to the other side of the fixed plate 5, and the position of the bending part 101 is fixed, the stable installation of the battery pack and the battery pack is ensured, and the heat dissipation tooth 501 is arranged on one side of the fixed plate 5 to dissipate heat, the heat dissipation effect of air cooling is further increased, and the heat dissipation structure of the battery pack can cooperate with air cooling to complete the heat dissipation of the direct current side battery pack.

[0035] Although the above describes the specific embodiments of the present application in order to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments, and for those skilled in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all the inventions using the concept of the present application are protected.

Claims

1. A heat dissipation structure, characterized in that: The utility model relates to a battery pack with a heat dissipation structure, comprising: a first body, a second body, a fixing device and a polarity pressure covering sheet one; the first body comprises four side walls and a bottom plate; the second body is arranged above the first body; the fixing device is arranged on the first body, and the fixing device comprises a fixing plate, one side of the fixing plate is provided with a mounting part and a heat dissipation tooth, and the mounting part is used for mounting the fixing plate on the side wall; the polarity pressure covering sheet one is arranged on the fixing device and comprises a plurality of pressure covering parts, one side of the polarity pressure covering sheet one is provided with a bending part two, and the bending part two is attached to the other side of the fixing plate; a plurality of positioning clamping grooves one are arranged at the bottom of the bending part two, and bending parts three are arranged at two sides; the fixing device further comprises a pressing plate, and the pressing plate is used for fixing the position of the polarity pressure covering sheet one in cooperation with the fixing plate; the fixing plate is provided with recessed parts one at two sides, and the recessed parts one are used for accommodating the bending parts three; the polarity pressure covering sheet one is located between the first body and the second body and is used for contacting the polarity end of the battery cell.

2. The heat dissipation structure according to claim 1, wherein two of the side walls are provided with folding parts one and positioning holes, and the other two side walls are provided with bending parts one, and the bending parts one are provided with a plurality of mounting holes one and are used for mounting the second body.

3. The heat dissipation structure of claim 1, wherein the bottom plate is provided with a plurality of rib plates and is used for reserving heat dissipation space for a polarity pressure covering sheet two arranged on the bottom plate.

4. The heat dissipation structure of claim 2, wherein the second body comprises a plurality of wave-shaped cover plates, two ends of the wave-shaped cover plates are provided with a plurality of mounting holes two, and the mounting holes two are used for fixing and mounting the wave-shaped cover plates on the bending parts one in cooperation with the mounting holes one.

5. The heat dissipation structure of claim 1, wherein two of the side walls are provided with folding parts one and positioning holes, the pressing plate is provided with a plurality of fixed parts and a plurality of butt joint parts, the number of the fixed parts corresponds to the number of the positioning holes, the number of the butt joint parts is the same as that of the clamping grooves one, and the butt joint parts press the bending parts three in cooperation with the recessed parts one.

6. A battery pack, characterized by, the heat dissipation structure of any one of claims 1-5.

7. An energy storage container, characterized by the battery pack of claim 6.

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