Battery cell bracket, battery pack, battery pack and electric equipment

Abstract

The utility model relates to a battery cell support, a battery pack, a battery pack and electric equipment, the battery cell support comprises a top cover, a bottom plate and a side coaming, the top cover, the bottom plate and the side coaming form an accommodating space for accommodating a battery cell, and the top cover, the bottom plate and the side coaming are respectively provided with a hollow structure. The battery cell is mounted in the accommodating space defined by the top cover, the bottom plate and the side coaming which are of the hollow structure, so that the weight and the size of the battery cell bracket can be reduced while the structural strength of the battery cell bracket is ensured, and meanwhile, the battery cell bracket is convenient to mount and dismount. The cooling gas can flow through the top cover, the bottom plate and the side coaming from multiple directions through the hollow structure to enter the accommodating space, and is discharged after taking away the heat of the battery cell, so that the heat dissipation area of the battery cell bracket is effectively increased, the heat dissipation efficiency of the battery cell is further improved, the temperature of the battery cell is reduced, the performance of the battery cell is improved, and the service life of the battery cell is prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery pack cooling, and in particular to a battery cell bracket, a battery pack, a battery package and an electrical device. Background Art

[0002] When the battery pack is charged and discharged at a high rate, the internal reaction of the battery cell will generate a lot of heat, causing the battery to heat up seriously. If the heat cannot be dissipated in time, the battery temperature will rise sharply, which is very likely to cause thermal runaway of the battery, and further heat spread will cause fire and explosion. In related technologies, the cooling system for battery packs mostly uses water cooling belts. This cooling process is complicated and the assembly efficiency is low, which greatly increases the production cost. Utility Model Content

[0003] The first objective of the present disclosure is to provide a battery cell bracket, which can at least partially solve the technical problems existing in the related art.

[0004] A second objective of the present disclosure is to provide a battery pack, which includes the battery cell holder provided by the present disclosure.

[0005] A third object of the present disclosure is to provide a battery pack, which includes the battery pack provided by the present disclosure.

[0006] A fourth objective of the present disclosure is to provide an electrical device, which may include the battery pack or battery package provided by the present disclosure.

[0007] In order to achieve the above-mentioned purpose, the present disclosure provides a battery cell bracket, including a top cover, a bottom plate and a side panel, wherein the top cover, the bottom plate and the side panel enclose a storage space for accommodating the battery cell, and the top cover, the bottom plate and the side panel are respectively provided with a hollow structure.

[0008] Optionally, the hollow structure of the side panel includes a plurality of first hollow holes arranged at intervals, and the first hollow holes penetrate both sides of the side panel along the thickness direction.

[0009] Optionally, a plurality of the first hollow holes are arranged at intervals along the circumference of the side panel.

[0010] Optionally, the ratio of the size of at least one of the first hollow holes along the circumferential direction of the side panel to the circumference of the side panel is 1 / 75~1 / 70, and the ratio of the size of at least one of the first hollow holes along the height direction to the height of the side panel is 0.8~0.9.

[0011] Optionally, the hollow structure of the top cover includes at least one second hollow hole passing through both sides of the top cover in the thickness direction, and the hollow structure of the bottom plate includes at least one third hollow hole passing through both sides of the bottom plate in the thickness direction, and the second hollow hole and the third hollow hole are at least partially arranged opposite to each other.

[0012] Optionally, at least one first positioning portion is provided on a side of the bottom plate facing the accommodating space, and the first positioning portion is suitable for fixing the battery core.

[0013] Optionally, at least one circle of the first positioning portion is arranged on the bottom plate around the center line of the bottom plate.

[0014] Optionally, the first positioning portion is configured as an annular structure protruding toward the accommodating space, and the annular structure is suitable for installing the battery core.

[0015] Optionally, at least one second positioning portion is provided on a side of the top cover facing the accommodating space, and at least one second positioning portion is provided corresponding to at least one first positioning portion.

[0016] Optionally, the hollow structure of the top cover further includes a fourth hollow hole opened at a position corresponding to the second positioning portion, and the fourth hollow hole penetrates both sides of the top cover in the thickness direction and is suitable for being arranged opposite to at least part of the battery core.

[0017] Optionally, the side panels are arranged along the circumference of the bottom plate and are integrally formed with the bottom plate.

[0018] According to a second aspect of the present disclosure, a battery pack is provided, comprising at least one battery cell and a battery cell holder for mounting the battery cell, wherein the battery cell holder is the battery cell holder described above, and at least one of the battery cells is disposed in a receiving space of the battery cell holder.

[0019] According to a third aspect of the present disclosure, a battery pack is provided, comprising the battery pack described above.

[0020] A fourth aspect of the present disclosure provides an electrical device comprising the battery pack or the battery package described above.

[0021] Through the above technical scheme, by installing the battery cell in the accommodating space surrounded by the top cover, bottom plate and side panels with a hollow structure, the weight and volume of the battery cell holder can be reduced while ensuring the structural strength of the battery cell holder. At the same time, the cooling gas can flow through the top cover, bottom plate and side panels from multiple directions through the hollow structure into the accommodating space and be discharged after taking away the heat of the battery cell, which effectively increases the heat dissipation area of ​​the battery cell holder, thereby improving the heat dissipation efficiency of the battery cell, helping to reduce the temperature of the battery cell, thereby improving the performance and life of the battery cell.

[0022] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of a battery cell support with a battery cell installed thereon provided in an exemplary embodiment of the present disclosure;

[0025] Figure 2 is a front view of a battery cell support with a battery cell installed thereon provided in an exemplary embodiment of the present disclosure;

[0026] Figure 3 yes Figure 2 Cross-sectional view along AA direction;

[0027] Figure 4 is a partial structural schematic diagram of a battery cell support with a battery cell installed thereon provided in an exemplary embodiment of the present disclosure;

[0028] Figure 5 is a schematic diagram of the overall structure of a top cover provided by an exemplary embodiment of the present disclosure;

[0029] Figure 6 is a schematic diagram of the overall structure of a base plate provided by an exemplary embodiment of the present disclosure;

[0030] Figure 7 is a bottom view of a base plate provided by an exemplary embodiment of the present disclosure;

[0031] Figure 8 Schematic diagram of the overall structure of a side panel provided by an exemplary embodiment of the present disclosure.

[0032] Description of Reference Numerals

[0033] 100 - top cover; 200 - bottom plate; 300 - side panel; 410 - first hollow hole; 420 - second hollow hole; 430 - third hollow hole; 440 - fourth hollow hole; 510 - first positioning portion; 520 - second positioning portion; 600 - battery cell; 610 - positive terminal; 620 - negative terminal. DETAILED DESCRIPTION

[0034] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0035] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", refer to the outline of the corresponding parts themselves; the directional words used, such as "upper", "lower", "top" and "bottom", are defined based on the usage habits of the battery cell bracket provided in the present disclosure. Specifically, reference can be made to Figure 2 The terms used in this disclosure, such as "first", "second", etc., are intended to distinguish one element from another and do not have order or importance. In addition, when the following description refers to the drawings, the same reference numerals in different drawings represent the same or similar elements.

[0036] Reference Figure 1-Figure 8 The present disclosure provides a battery cell support, which may include a top cover 100, a bottom plate 200 and a side panel 300. The top cover 100, the bottom plate 200 and the side panel 300 may be enclosed to form a storage space for accommodating the battery cell 600, so as to provide an installation position for the battery cell 600 and provide a good protection for the battery cell 600. The top cover 100, the bottom plate 200 and the side panel 300 may be respectively provided with a hollow structure. It should be noted that the hollow structure in the present disclosure may be a through hole on the top cover 100, the bottom plate 200 and the side panel 300, respectively, so as to increase the circulation area of ​​the external gas on the battery cell support, facilitate the circulation of the cooling gas, improve the heat dissipation effect of the battery cell 600, reduce the safety risk caused by overheating, help reduce the temperature of the battery cell 600, and thus improve the performance of the battery cell 600. At the same time, the hollow structure can also discharge the gas inside the accommodating space. When the humidity of the gas inside the accommodating space is high, it can be discharged through the hollow structure to prevent corrosion and damage to the battery cell due to the high humidity inside the accommodating space.

[0037] In the embodiment provided by the present disclosure, the battery cell 600 can be installed inside the terminal device through the battery cell mounting bracket. It can be understood that the terminal device here can be a battery car, an electric car, a ship, a spacecraft, an energy storage system, etc. In this way, the natural wind generated when the terminal device is running can enter the interior of the accommodation space through the hollow structure, and the natural wind here can be used as a cooling gas, and take away the heat generated by the battery cell 600 and then flow out. At the same time, the natural wind flow during the operation of the terminal device is used to cool down, so that the cooling of the battery cell 600 does not need to rely on additional heat dissipation equipment, which can not only reduce energy consumption and adverse environmental effects, but also simplify the design of the heat dissipation system for the battery cell 600, which conforms to the principle of lightweight design.

[0038] Through the above technical scheme, by installing the battery cell 600 in the accommodation space surrounded by the top cover 100, the bottom plate 200 and the side panel 300 which are constructed as a hollow structure, the weight and volume of the battery cell holder can be reduced while ensuring the structural strength of the battery cell holder. At the same time, the cooling gas can flow through the top cover 100, the bottom plate 200 and the side panel 300 from multiple directions through the hollow structure to enter the accommodation space, and be discharged after taking away the heat of the battery cell 600, thereby effectively increasing the heat dissipation area of ​​the battery cell holder, thereby improving the heat dissipation efficiency of the battery cell, helping to reduce the temperature of the battery cell 600, and thus improving the performance and life of the battery cell 600.

[0039] Reference Figure 1 , Figure 2 as well as Figure 4 The hollow structure of the side panel 300 may include a plurality of first hollow holes 410 arranged at intervals. The first hollow holes 410 may penetrate the side panel 300 along the thickness direction (ie Figure 2 As a result, more cooling gas on the outside of the battery cell support enters the accommodation space, takes away the heat of the battery cell 600 and is discharged, accelerating the heat dissipation on the surface of the battery cell 600 and reducing the risk of thermal runaway of the battery cell 600.

[0040] Further, refer to Figure 1 , Figure 2 , Figure 4 as well as Figure 8 , a plurality of first hollow holes 410 can be opened in the side panel 300 in a circular array. On the one hand, the cooling gas can be uniformly passed into the accommodation space along the side, and the hot air can be discharged at the same time, which further helps to achieve more uniform heat dissipation of the battery cell 600 and make the temperature distribution of the battery cell 600 more balanced. On the other hand, since the side panel 300 serves as a supporting structure for the battery cell mounting bracket, by uniformly arranging a plurality of first hollow holes 410 on the side panel 300, the heat dissipation effect can be improved without affecting the structural stability.

[0041] Reference Figure 1 , Figure 2 , Figure 4 as well as Figure 8 The ratio of the size of each first hollow hole 410 along the circumference of the side panel 300 to the circumference of the side panel 300 may be 1 / 75-1 / 70, and the ratio of the size of the first hollow hole 410 along the height direction to the height of the side panel 300 may be 0.8-0.9. The size of the first hollow hole 410 is designed according to the size of the side panel 300, which can meet the ventilation requirements while maintaining sufficient strength of the side panel 300, ensuring the stability and safety of the battery support structure, and thus ensuring the reliability of battery installation.

[0042] Reference Figure 1 , Figure 3 , Figure 5 as well as Figure 6 , the hollow structure of the top cover 100 may include at least one second hollow hole 420 penetrating both sides of the top cover 100 in the thickness direction, and the hollow structure of the bottom plate 200 may include at least one third hollow hole 430 penetrating both sides of the bottom plate 200 in the thickness direction, and the second hollow hole 420 and the third hollow hole 430 may be arranged at least partially opposite to each other. In the embodiment provided by the present disclosure, the top cover 100 and the bottom plate 200 may be respectively constructed as an annular structure, which may be a square ring or a circular ring or a special-shaped ring, which is not limited here. By setting the second hollow hole 420 and the third hollow hole 430, the flow of cooling gas in the battery cell support may be promoted. For example, the cooling gas may enter the accommodation space through the second hollow hole 420, and after passing through the battery cell 600 to take away the heat of the battery cell 600 to form hot air, it may be discharged through the third hollow hole 430 facing it. In this way, the cooling gas entering the battery cell support from the top or bottom can be completely discharged, which effectively improves the heat dissipation efficiency of the entire battery cell 600 and ensures the stability and safety of the battery cell 600.

[0043] Reference Figure 1 , Figure 3 , Figure 4 as well as Figure 6 , at least one first positioning portion 510 is provided on one side of the bottom plate 200 facing the accommodation space, and the first positioning portion 510 is suitable for fixing the battery cell 600. When the battery cell holder or the battery cell 600 mounted with the battery cell 600 is subjected to external force or vibration, the first positioning portion 510 can provide support and stability. In the embodiment provided in the present disclosure, when the battery cell 600 is used in a vehicle, relative shaking or movement between the battery cell 600 and the battery cell holder can be effectively avoided during the driving of the vehicle, thereby effectively improving the stability and safety of the installation of the battery cell 600.

[0044] Further, refer to Figure 1 , Figure 3 , Figure 4 as well as Figure 6 , multiple circles of first positioning parts 510 may be arranged on the bottom plate 200 around the central axis of the bottom plate 200. On the one hand, the space of the bottom plate 200 can be reasonably used to arrange more battery cells 600 to meet the use requirements. On the other hand, the multi-circle design in this way can achieve uniform distribution of stress between multiple battery cells 600 and the bottom plate 200.

[0045] Reference Figure 1 , Figure 3 , Figure 4 as well as Figure 6, the first positioning portion 510 is configured as an annular structure protruding toward the accommodating space, and the annular structure is suitable for installing the battery cell 600, so that the battery cell 600 can be inserted into the first positioning portion 510, and then the battery cell 600 is clamped in the battery cell holder, thereby ensuring the stability of the battery cell installation and realizing that the battery cell 600 can be detachably installed inside the battery cell holder. In the embodiment provided in the present disclosure, the annular structure can be a square ring, a circular ring, or a special-shaped ring, as long as the limiting effect on the battery cell 600 can be guaranteed, and the present disclosure does not limit this. In addition, in order to further improve the limiting effect on the battery cell 600, when the battery cell 600 is configured as a cylindrical battery cell, the annular structure can be configured as a circular ring that matches the structure of the battery cell 600.

[0046] Reference Figure 1 , Figure 3 as well as Figure 5 A plurality of annular second positioning portions 520 may be provided on the top cover 100, and the plurality of second positioning portions 520 are respectively aligned with the corresponding first positioning portions 510, so that one end of the battery cell 600 is inserted into the groove formed by the annular first positioning portion 510, and the other end is inserted into the groove formed by the annular second positioning portion 520, so as to fix the two ends of the battery cell 600, thereby further improving the installation stability of the battery cell 600.

[0047] Reference Figure 1 and Figure 3, the hollow structure of the top cover 100 may further include a fourth hollow hole 440 opened at a position corresponding to the second positioning portion 520, and the fourth hollow hole 440 may penetrate both sides of the top cover 100 in the thickness direction and is suitable for being arranged at least partially opposite to the battery cell 600. In the embodiment provided by the present disclosure, when the battery cell 600 is installed inside the battery cell holder, the positive terminal 610 of the battery cell 600 may be arranged toward the top cover, and the negative terminal 620 of the battery cell 600 may be arranged toward the bottom plate, and the negative terminal 620 may be stuck in the first positioning portion 510, and the positive terminal 610 may be partially inserted into the fourth hollow hole 440 after being stuck in the second positioning portion 520. In the related art, the positive terminal 610 of the battery cell 600 is usually formed with a protrusion, and the fourth hollow hole 440 is provided to not only further dissipate heat, but also avoid and position the positive terminal 610, so that the battery cell holder can ensure the stability of the installation of the battery cell 600 while taking into account the heat dissipation effect. Of course, the negative terminal 620 of the battery cell 600 may also be formed with the above-mentioned raised portion. When the negative terminal 620 is formed with a raised portion, the hollow structure may also include a fifth hollow hole (not shown in the figure). The fifth hollow hole may be opened on the bottom plate 200 corresponding to the position of the first positioning portion 510, so as to further play a role in heat dissipation by setting the fifth hollow hole, and can also play a role in avoiding and positioning the raised portion of the negative terminal 620, so that the battery cell bracket can not only take into account the heat dissipation effect, but also further ensure the stability of the installation of the battery cell 600.

[0048] According to a second aspect of the present disclosure, referring to Figure 1 , a battery pack is also provided, the battery pack includes a battery cell 600 and a battery cell bracket for mounting the battery cell 600, and the battery cell bracket is a battery cell bracket according to the above. The battery pack has all the beneficial effects of the battery cell bracket provided by the present disclosure, which will not be repeated here. In the embodiment provided by the present disclosure, the battery cell 600 can be constructed as a cylindrical battery cell to reduce production costs while ensuring the stability of process performance. It should be noted that in other embodiments provided by the present disclosure, the battery cell 600 can also be constructed as a battery cell with a square cross-section.

[0049] According to a third aspect of the present disclosure, a battery pack is also provided, which may include the above-mentioned battery pack. The battery pack has all the beneficial effects of the battery pack provided by the present disclosure, which will not be described in detail here.

[0050] According to a fourth aspect of the present disclosure, there is also provided an electric device, which may include the above-mentioned battery pack or the above-mentioned battery package. The electric device has all the beneficial effects of the battery pack or battery package provided by the present disclosure, which will not be repeated here. According to an embodiment provided by the present disclosure, the electric device may be a vehicle.

[0051] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0053] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery cell support, characterized in that: The battery pack comprises a top cover, a bottom plate and a side panel, wherein the top cover, the bottom plate and the side panel enclose a storage space for accommodating the battery cell, and the top cover, the bottom plate and the side panel are respectively provided with a hollow structure; The hollow structure of the side panel includes a plurality of first hollow holes arranged at intervals, and the first hollow holes penetrate both sides of the side panel along the thickness direction; The plurality of first hollow holes are arranged at intervals along the circumference of the side panel.

2. The battery cell support according to claim 1, characterized in that: The ratio of the size of at least one of the first hollow holes along the circumferential direction of the side panel to the circumference of the side panel is 1 / 75~1 / 70, and the ratio of the size of at least one of the first hollow holes along the height direction to the height of the side panel is 0.8~0.

9.

3. The battery cell support according to claim 1, characterized in that: The hollow structure of the top cover includes at least one second hollow hole passing through both sides of the top cover in the thickness direction, and the hollow structure of the bottom plate includes at least one third hollow hole passing through both sides of the bottom plate in the thickness direction, and the second hollow hole and the third hollow hole are at least partially arranged opposite to each other.

4. The battery cell support according to claim 1, characterized in that: At least one first positioning portion is provided on a side of the bottom plate facing the accommodating space, and the first positioning portion is suitable for fixing the battery core.

5. The battery cell support according to claim 4, characterized in that: At least one circle of the first positioning portion is arranged on the bottom plate around the center line of the bottom plate.

6. The battery cell support according to claim 5, characterized in that: The first positioning portion is configured as an annular structure protruding toward the accommodation space, and the annular structure is suitable for installing the battery core.

7. The battery cell support according to claim 4 or 5, characterized in that: At least one second positioning portion is disposed on a side of the top cover facing the accommodating space, and at least one second positioning portion is disposed corresponding to at least one first positioning portion.

8. The battery cell support according to claim 7, characterized in that: The hollow structure of the top cover further includes a fourth hollow hole opened at a position corresponding to the second positioning portion. The fourth hollow hole penetrates both sides of the top cover in a thickness direction and is suitable for being arranged opposite to at least part of the battery core.

9. The battery cell support according to claim 1, characterized in that: The side panels are arranged to surround the bottom plate along a circumference thereof and are formed integrally with the bottom plate.

10. A battery pack, characterized in that: The battery pack includes at least one battery cell and a battery cell holder for mounting the battery cell, wherein the battery cell holder is the battery cell holder according to any one of claims 1 to 9, and at least one battery cell is disposed in a receiving space of the battery cell holder.

11. A battery pack, characterized in that: Comprising a battery pack according to claim 10.

12. An electrical device, characterized in that: Includes the battery pack according to claim 10 or the battery package according to claim 11.

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