Battery shell structure, battery and electric equipment

Abstract

The utility model relates to a battery shell structure, a battery and electric equipment, and relates to the technical field of power batteries. The battery shell structure comprises a bottom plate, a side plate and a supporting table, the bottom plate and the side plates define a containing cavity with an opening in one end, and the battery cell is arranged in the containing cavity. The supporting table is arranged on the bottom plate and located in the containing cavity, and the supporting table and the bottom plate are integrally arranged. Wherein the supporting table is positioned between the bottom plate and the battery cell and is used for supporting the battery cell. According to the battery shell structure provided by the invention, the problems that a bottom supporting sheet arranged between the battery cell and the shell bottom plate in the prior art is tedious to assemble and possibly causes damage to the bottom of the battery cell can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power batteries, in particular to a battery shell structure, a battery and an electric device. BACKGROUND

[0002] In the process of assembling the power battery, a shell structure is needed to be arranged outside the battery cell for sealing and protecting the battery cell.

[0003] In the prior art, the shell outside the battery cell is usually arranged as an aluminum shell structure, which is usually integrally formed by stamping or bending, and finally forms a battery shell structure with an open top. In the specific processing process, the aluminum plate needs to be bent to form the bottom plate and the side plate of the aluminum shell. At this time, the transition structure in the form of a circular arc will inevitably be formed between the bottom plate and the side plate of the aluminum shell.

[0004] In the process of assembling the power battery, the bottom plate of the aluminum shell needs to support the bottom of the battery cell. At this time, in order to avoid the interference of the transition structure in the form of a circular arc on the battery cell, a bottom support piece is usually arranged between the bottom plate of the aluminum shell and the battery cell to lift the battery cell.

[0005] However, the above-mentioned bottom support piece needs to be connected with the bottom plate of the battery cell by hot melting welding or other methods when in use, in order to avoid the movement of the bottom support piece affecting the supporting effect during assembly. The above-mentioned connection method not only makes the overall assembly process of the battery more complex and cumbersome, affecting the production and assembly efficiency, but also may cause damage to the bottom of the battery cell, affecting the overall quality of the battery. UTILITY MODEL CONTENT

[0006] The purpose of the present application is to provide a battery shell structure, a battery and an electric device, which can solve the problem of complicated assembly and possible damage to the bottom of the battery cell caused by the bottom support piece arranged between the battery cell and the bottom plate of the shell in the prior art.

[0007] In order to achieve the above-mentioned purpose, the first aspect of the present application provides a battery shell structure for accommodating a battery cell. The battery shell structure comprises a bottom plate and a side plate and a support table. The bottom plate and the side plate enclose an accommodating cavity with an open end, and the battery cell is arranged in the accommodating cavity. The support table is arranged on the bottom plate and located in the accommodating cavity, and the support table is integrally arranged with the bottom plate. The support table is located between the bottom plate and the battery cell for supporting the battery cell.

[0008] Based on the above-mentioned embodiments of the present application, by integrally arranging the support table on the bottom plate of the battery shell, the support table can be integrally formed by turning or stamping during the specific production and processing process. During the battery assembly process, when the battery cell is assembled into the accommodating cavity, the support table integrally arranged with the bottom plate supports the bottom of the battery cell. By lifting the bottom of the battery cell, interference of the arc-shaped transition structure generated at the intersection position of the bottom of the battery cell and the bottom plate and the side plate of the battery shell is avoided, thereby achieving a similar technical effect as the bottom support sheet in the prior art. However, unlike the prior art, the support table is integrally formed with the bottom plate of the battery shell, and the position of the support table has been fixed, so it is not necessary to separately connect and fix the support table, thereby making the overall assembly process of the battery more simple and convenient. At the same time, damage to the battery cell caused by the welding connection method in the prior art can be avoided, thereby further improving the overall assembly and processing quality of the battery.

[0009] In some embodiments, the bottom surface of the bottom plate is arranged as a planar structure, the thickness of the support table is H1, the thickness of other regions of the bottom plate except the support table is H2, and H1>H2.

[0010] Based on the above-mentioned embodiments of the present application, a forming method of the support table is provided, that is, the bottom surface of the bottom plate is kept flat, and the thickness of the support table region is greater than the thickness of other regions of the bottom plate, thereby forming a convex support table structure. During the specific processing process, the thickness of the support table region can be increased or the thickness of other regions of the bottom plate can be reduced to achieve the above-mentioned method. Through the above-mentioned arrangement, the support table can be integrally formed, and the bottom surface of the bottom plate can be kept flat, which is convenient for subsequent group assembly of multiple batteries.

[0011] In some embodiments, the bottom surface of the bottom plate is arranged as a planar structure, the thickness of the support table is H1, the thickness of other regions of the bottom plate except the support table is H2, and H1>H2.

[0012] Based on the above-mentioned embodiments of the present application, another forming method of the support table is provided. At this time, the support table can be formed by stamping in the direction towards the accommodating cavity on the bottom plate, and the bottom surface of the bottom plate will form a recessed structure. When the above-mentioned method is used for processing, the overall processing process is simple and convenient.

[0013] In some embodiments, the thickness of the bottom plate and the thickness of the recessed structure are both H3.

[0014] Based on the above-mentioned embodiments of the present application, when the recessed structure is formed on the bottom plate by stamping to form the support table, the thickness of the support table part on the bottom plate and the thickness of other parts on the bottom plate are consistent, so that the overall thickness of the bottom plate of the battery shell is relatively uniform, thereby making the strength of each part of the bottom plate more uniform, and further ensuring the overall strength of the battery shell.

[0015] In some embodiments, the transition portion between the bottom plate and the side plate is arc-shaped, the radius of the transition portion is R, the spacing between the support platform and the side plate is H4, and H4≥R+H1.

[0016] Based on the above-mentioned embodiments of the present application, by limiting the spacing between the support platform and the side plate of the battery shell, the spacing between them can facilitate the processing of the support platform. Whether the support platform is processed by punching or turning, the spacing can provide space for the processing and forming of the support platform, to some extent, avoiding interference between the support platform and the side plate of the battery shell and the transition portion between the side plate and the bottom plate, thereby enhancing the quality and strength of the overall battery shell and improving the fixing and protection effect on the battery cell.

[0017] In some embodiments, the area of the support platform is S1, the area of the bottom plate is S2, and 0.1≤S1 / S2≤0.85.

[0018] Based on the above-mentioned embodiments of the present application, the area ratio of the support platform to the bottom plate is limited. When the area of the support platform is too small, on the one hand, the support stability of the support platform for the battery cell is poor, and on the other hand, due to the small contact area between them, the pressure on the contact position of the battery cell is greater, which may damage the battery cell. When the area of the support platform is too large, on the one hand, the support platform may interfere with the transition portion and the side plate, affecting the overall production and processing of the battery shell and the strength of the battery shell, and on the other hand, it also leads to an increase in the amount of material and weight of the overall battery shell, which not only affects the energy density of the overall battery, but also leads to an increase in the cost of the overall battery. Therefore, by limiting the area of the support platform, the above problems can be avoided to some extent.

[0019] In some embodiments, the transition portion between the bottom plate and the side plate is arc-shaped, the radius of the transition portion is R, the height of the support platform protruding from the bottom plate is H5, and 0.1mm≤H5≤R.

[0020] Based on the above-mentioned embodiments of the present application, the height of the support platform protruding from the bottom plate is limited. When the height of the support platform protruding from the bottom plate is too low, the support platform cannot effectively support the battery cell, which may cause interference between the battery cell and the transition portion between the side plate and the bottom plate, affecting the assembly of the battery cell. When the height of the support platform protruding from the bottom plate is too high, it will cause the support platform to occupy too much space in the accommodation cavity, thereby affecting the volume setting of the battery cell and reducing the energy density of the overall battery. Therefore, by limiting the height of the support platform protruding from the bottom plate, the above problems can be avoided to some extent.

[0021] According to a second aspect of the present application, a battery is provided, which includes a battery cell and the above-mentioned battery shell structure, and the battery cell is arranged in the accommodation cavity.

[0022] Based on the above-mentioned embodiments of the present application, the battery provided by the present application comprises the above-mentioned battery shell structure. Through the above-mentioned arrangement, the electric core can be supported by the support platform, so as to avoid interference between the electric core and the transition part during assembly. Meanwhile, compared with the bottom support sheet and other structures in the prior art, the fixing process between the bottom support sheet, the electric core and the battery shell can be omitted, so as to simplify the overall assembly process of the battery and avoid damage to the electric core to a certain extent during the assembly process.

[0023] In some embodiments, the electric core is arranged in a winding core structure, and the winding core structure has an arc-shaped winding area at both ends in the length direction, the projection area of the winding area on the support platform is S3, and the projection area of other parts of the winding core structure on the support platform is S4, S4>S3.

[0024] Based on the above-mentioned embodiments of the present application, when the electric core is arranged in a winding core structure, the size and strength of the winding area formed at the end of the winding core structure due to winding are generally smaller than those of the middle part of the winding core structure. Therefore, by limiting the sizes of the areas of the winding area and other areas of the winding core structure projected on the support platform, the most contact positions of the winding core structure are located in the middle part of the winding core structure except the winding area when the winding core structure contacts with the support platform, so as to ensure the supporting effect and avoid damage to the electric core to a certain extent.

[0025] According to a third aspect of the present application, a power consuming device is provided, which comprises a device main body and the above-mentioned battery. The device main body is internally provided with a power supply cavity, and the battery is arranged in the power supply cavity.

[0026] Based on the above-mentioned embodiments of the present application, the power consuming device provided by the present application comprises the above-mentioned battery, so it also has the above-mentioned beneficial effects. To avoid repetition, the above-mentioned beneficial effects will not be described here again.

[0027] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0029] Figure 1 is an explosion schematic diagram of a battery in the prior art.

[0030] Figure 2 is a structural schematic diagram of a bottom support sheet in the prior art.

[0031] Figure 3 is a partial planar schematic diagram of a battery shell structure provided by the embodiments of the present application.

[0032] Figure 4 is Figure 3 is an enlarged schematic view of region A in FIG.

[0033] Figure 5 is a partial plan view of a battery shell structure according to another embodiment of the present application.

[0034] Figure 6 is an enlarged schematic view of region B in FIG. Figure 5

[0035] Figure 7 is a top view of a battery shell structure according to an embodiment of the present application.

[0036] Figure 8 is a cross-sectional view of a winding core structure according to an embodiment of the present application.

[0037] Legend of Reference Numerals

[0038] 1, bottom plate; 11, recessed structure; 2, side plate; 21, transition portion; 3, accommodating cavity; 4, support platform; 5, winding core structure; 51, winding region; 6, bottom support sheet; 7, battery cell module; 8, aluminum shell. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application.

[0040] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present application.

[0042] It should be noted that similar reference numerals and letters refer to similar items throughout the accompanying drawings, and thus, once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings.

[0043] ​In the description of the present application, it should be noted that, unless otherwise stated, the terms "in", "out" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element 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 "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present application, it should be noted that, unless otherwise stated and limited, the terms "set", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the prior art, as shown in Figure 1 and Figure 2 , the shell outside the battery cell module 7 is usually an aluminum shell 8, which is usually integrally formed by stamping or bending during the specific processing process, and finally forms a battery shell structure with an open top. In the specific processing process, the aluminum plate needs to be bent to form the bottom wall and the side wall of the aluminum shell 8, at which time a circular arc transition structure will inevitably be formed between the bottom wall and the side wall of the aluminum shell 8.

[0046] During the assembly of the power battery, the bottom wall of the aluminum shell 8 needs to support the bottom of the battery cell module 7, at which time in order to avoid the interference of the circular arc transition structure on the bottom of the battery cell module 7, a bottom support piece 6 is usually arranged between the bottom wall of the aluminum shell 8 and the battery cell module 7 to raise the battery cell module 7.

[0047] However, as shown in Figure 2 , in use, in order to avoid the movement of the bottom support piece 6 during assembly affecting the supporting effect, for example, the lateral movement of the bottom support piece 6 causing uneven stress when supporting the battery cell module 7, not only will affect the assembly stability of the battery cell module 7, but also may even cause damage to the battery cell module 7. Therefore, at this time, the bottom support piece 6 needs to be connected to the bottom of the battery cell module 7 by heat staking or the like, so as to fix the position of the bottom support piece 6 to avoid movement of the bottom support piece 6 during assembly. The above connection method not only makes the assembly process of the battery more complex and cumbersome, affecting the production and assembly efficiency, but also may cause damage to the bottom of the battery cell module 7, affecting the production and processing quality of the battery as a whole.

[0048] To solve the above problems in the prior art, according to a first aspect of the present application, embodiments of the present application provide a battery shell structure for accommodating an electric core. Referring to Figures 3 to 6 The battery shell structure includes a bottom plate 1 and a side plate 2, and a support platform 4. The bottom plate 1 and the side plate 2 enclose an accommodating cavity 3 with an open end, and the electric core (not shown) is arranged in the accommodating cavity 3. The support platform 4 is arranged on the bottom plate 1 and located in the accommodating cavity 3, and the support platform 4 is arranged integrally with the bottom plate 1. The support platform 4 is located between the bottom plate 1 and the electric core to support the electric core.

[0049] Based on the above embodiments of the present application, the support platform 4 is integrally arranged on the bottom plate 1 of the battery shell, which can be integrally machined by turning or stamping during the specific production and processing process. During the battery assembly process, when the electric core is assembled into the accommodating cavity 3, the support platform 4 arranged integrally with the bottom plate 1 supports the bottom of the electric core. By lifting the bottom of the electric core, interference with the arc-shaped transition structure generated at the intersection of the bottom of the electric core and the bottom plate 1 and the side plate 2 of the battery shell is avoided, thereby achieving a similar technical effect as the bottom support piece 6 in the prior art.

[0050] Unlike the prior art, the support platform 4 is integrally machined with the bottom plate 1 of the battery shell, and the position of the support platform 4 is fixed, so it is not necessary to separately connect and fix the support platform 4, thereby making the overall assembly process of the battery simpler and more convenient. At the same time, damage to the electric core caused by the welding connection method in the prior art can be avoided, thereby further improving the overall assembly and processing quality of the battery.

[0051] Specifically, during the machining process of the battery shell, the bottom plate 1 and the side plate 2 can be cut and stamped from a whole plate body, and then the joint position of the side plate 2 can be reinforced and sealed by welding to form the battery shell structure. During this process, the connection position of the bottom plate 1 and the side plate 2 naturally forms an arc-shaped transition structure due to bending. The support platform 4 is arranged integrally with the bottom plate 1, and during the bending process of the bottom plate 1 and the side plate 2 to form the accommodating cavity 3, the support platform 4 is fixed at the bottom of the accommodating cavity 3. Then, only the electric core needs to be assembled into the accommodating cavity 3 and supported by the support platform 4. Therefore, the fixing process of the bottom support piece 6 in the prior art is omitted.

[0052] In addition, it should be noted that the accommodating cavity 3 enclosed by the bottom plate 1 and the side plate 2 in the present application can be arranged in any suitable structure, for example, the cavity structure of the accommodating cavity 3 can be arranged as a cylindrical structure, a cubic structure, and a triangular prism structure, etc. The shape and structure of the electric core can be arranged, and the present application does not make specific limitations.

[0053] Furthermore, based on the different structures of the receiving cavity 3, the side plates 2 in this application can also be configured with different structures and quantities. For example, when the receiving cavity 3 is configured as a cylindrical structure, the side plates 2 form a circular cylindrical structure. When the receiving cavity 3 is configured as a cubic structure, the side plates 2 can be configured as four sequentially connected planar plate structures, and adjacent planar plate structures can be configured with different widths, thus corresponding to the rectangular structure formed by the horizontal cross-section of the receiving cavity 3. Similarly, when the receiving cavity 3 is configured as a triangular prism structure, the side plates 2 can be configured as three sequentially connected planar plate structures.

[0054] In this application, the support platform 4 can be formed on the base plate 1 in any suitable manner.

[0055] refer to Figure 3 and Figure 4 As shown in the exemplary embodiment provided in this application, the bottom surface of the base plate 1 can be set as a planar structure, the thickness of the support platform 4 is H1, and the thickness of other areas on the base plate 1 other than the support platform 4 is H2, then H1 > H2.

[0056] Based on the above embodiments of this application, a method for forming the support platform 4 is provided, namely, keeping the bottom surface of the base plate 1 flat, and forming a raised support platform 4 structure by setting the thickness of the support platform 4 area to be greater than the thickness of other areas of the base plate 1. This can be achieved by increasing the thickness of the support platform 4 area or reducing the thickness of other areas of the base plate 1 during the specific processing. Through the above arrangement, the support platform 4 can be integrally formed while ensuring the flatness of the bottom surface of the base plate 1, facilitating the subsequent assembly of multiple batteries into groups.

[0057] Specifically, when the protruding support platform 4 structure is formed by increasing the thickness of the support platform 4 area, it is equivalent to adding the support platform 4 structure while keeping the thickness of the original battery casing base plate 1 unchanged. Therefore, the thickness of the support platform 4 area is greater than that of the surrounding area, and the overall strength of the support platform 4 area is higher, thereby improving the support effect on the battery cell.

[0058] When the raised support platform 4 structure is formed by reducing the thickness of other areas of the base plate 1, it can be integrally formed using methods such as milling or stamping during the manufacturing process. This is equivalent to keeping only the thickness of the support platform 4 area unchanged while reducing the thickness of other areas on the original battery casing base plate 1. Therefore, the support platform 4 not only provides support for the battery cells but also reduces material usage and cost, thereby mitigating the impact on the overall energy density of the battery to some extent.

[0059] In addition, it should be noted that the application only discloses the specific shape of the support table 4 and the bottom plate 1 of the battery shell, and the specific forming method of the above structure can be selected from various processing methods including punching and turning, which can be set according to process requirements and other factors, and the application does not make specific limitations.

[0060] As shown in FIGS. 1 to 3, in some embodiments of the application, the bottom plate 1 can be provided with a support table 4, and the support table 4 can be formed on the bottom plate 1. Figure 5 Figure 6 As shown in FIGS. 1 to 3, in some embodiments of the application, the bottom plate 1 can be provided with a support table 4, and the support table 4 can be formed on the bottom plate 1.

[0061] Based on the above embodiments of the application, another forming method of the support table 4 is provided. At this time, the support table 4 can be directly formed on the bottom plate 1 in the direction towards the accommodating cavity 3 by punching or the like, and at this time, the lower surface of the bottom plate 1 can form a recessed structure 11. When the above method is used for processing, the overall processing process is simple and convenient.

[0062] Further, in some embodiments of the application, when the lower surface of the bottom plate 1 is provided with a recessed structure 11 in the direction towards the accommodating cavity 3, the thickness of the bottom plate 1 and the thickness of the recessed structure 11 can both be H3.

[0063] Based on the above embodiments of the application, when the recessed structure 11 is formed on the bottom plate 1 by punching to form the support table 4, at this time, the thickness of the support table 4 part on the bottom plate 1 and the thickness of other parts on the bottom plate 1 are consistent, so that the overall thickness of the bottom plate 1 of the battery shell is relatively uniform, thereby making the strength of each part of the bottom plate 1 more uniform, and further ensuring the overall strength of the battery shell.

[0064] Specifically, when the bottom plate 1 is processed, the recessed structure 11 can be processed by punching or the like, at this time, the size and depth of the recessed structure 11 can be adjusted according to the size of the mold and the punching degree, and the overall processing process is simple and fast. At this time, the support table 4 structure can be formed on the original bottom plate 1 structure by punching, without the need to separately add materials, thereby reducing the production and processing cost.

[0065] In addition, it should be noted that the recessed structure 11 of the application refers to the recess from one side of the lower surface of the bottom plate 1 to the direction of the accommodating cavity 3, and from the inside of the accommodating cavity 3 it can be considered as a protruding structure upward.

[0066] As shown in FIGS. 1 to 3, in some embodiments of the application, the bottom plate 1 can be provided with a support table 4, and the support table 4 can be formed on the bottom plate 1. Figures 3 to 7 As shown in FIGS. 1 to 3, in some embodiments of the application, the bottom plate 1 can be provided with a support table 4, and the support table 4 can be formed on the bottom plate 1.

[0067] ​Based on the above embodiments of the application, by limiting the distance between the support table 4 and the side plate 2 of the battery shell, the distance between the two can be set on one hand to facilitate the processing of the support table 4. Whether the support table 4 is processed by punching or turning, the setting of the distance can leave space for the processing and forming of the support table 4, to a certain extent, to avoid interference between the support table 4 and the transition part 21 between the side plate 2 and the bottom plate 1 of the battery shell, thereby strengthening the quality and strength of the battery shell as a whole, and improving the fixing and protection effect on the battery cell.

[0068] Specifically, in the specific processing process, the size of the transition part 21 needs to be adjusted according to various factors, for example, according to the overall size of the battery shell, generally the larger the size of the battery shell, the larger the radius of the transition part 21. For example, according to the thickness of the bottom plate 1 and the side plate 2, when the thickness of the bottom plate 1 and the side plate 2 is thicker, the radius of the transition part 21 formed when bending is generally larger.

[0069] Further, the distance between the support table 4 and the side plate 2 in the application is limited, which can include two cases. In one case, the distance between the support table 4 and the side plate 2 at each position is equal, for example, when the accommodation cavity 3 is set as a cylindrical structure, the support table 4 can be set as a circular structure, at this time, the distance should be greater than the sum of the radius of the transition part 21 and the thickness of the support table 4.

[0070] And in another case, the distance between the support table 4 and the side plate 2 at each position can be different, for example, when the accommodation cavity 3 is set as a cubic structure, at this time, the two adjacent side plates 2 can be set as different widths, and then connected into a rectangular structure. At this time, the distance between the support table 4 and the adjacent two side plates 2 can be set to be different, but also should satisfy that the distance is greater than the sum of the radius of the transition part 21 and the thickness of the support table 4.

[0071] Reference Figure 7 In some embodiments of the application, the area of the support table 4 is S1, and the area of the bottom plate 1 is S2, and the size relationship between the two can be set as 0.1≤S1 / S2≤0.85.

[0072] Based on the above embodiments of the application, the area ratio of the support platform 4 to the bottom plate 1 is limited. When the area of the support platform 4 is too small, on the one hand, the support stability of the support platform 4 for the battery cell is poor, and on the other hand, due to the small contact area between the two, the pressure on the contact position of the battery cell is greater, which may damage the battery cell. When the area of the support platform 4 is too large, on the one hand, the support platform 4 may interfere with the transition portion 21 and the side plate 2, affecting the overall production process of the battery shell and the strength of the battery shell, and on the other hand, it also leads to an increase in the overall material usage and weight of the battery shell, which not only affects the overall energy density of the battery, but also leads to an increase in the overall cost of the battery. Therefore, by limiting the area of the support platform 4, the above problems can be avoided to some extent.

[0073] Specifically, in actual setting, the ratio of the area of the bottom plate 1 to the area of the support platform 4 can be set to 0.1, 0.3, 0.5, 0.7, and 0.85, etc. In actual use, it can be set according to the height and weight of the battery cell, etc. The application does not make specific limitations.

[0074] Reference Figure 4 As shown in the above embodiments of the application, in some embodiments of the application, the height of the support platform 4 protruding from the bottom plate 1 is H5, and 0.1mm≤H5≤R.

[0075] Based on the above embodiments of the application, the height of the support platform 4 protruding from the bottom plate 1 is limited. When the height of the support platform 4 protruding from the bottom plate 1 is too low, the support platform 4 cannot effectively support the battery cell, which may cause interference between the battery cell and the transition portion 21 between the side plate 2 and the bottom plate 1, affecting the assembly of the battery cell. When the height of the support platform 4 protruding from the bottom plate 1 is too high, it will lead to the support platform 4 occupying too much space in the accommodation cavity 3, thereby affecting the volume setting of the battery cell and reducing the overall energy density of the battery. Therefore, by limiting the height of the support platform 4 protruding from the bottom plate 1, the above problems can be avoided to some extent.

[0076] Specifically, when the transition portion 21 is formed between the bottom plate 1 and the side plate 2, since the bottom plate 1 and the side plate 2 are perpendicular to each other at this time, the transition portion 21 is usually set to a quarter circular structure. At this time, the lower end of the transition portion 21 will extend towards the bottom plate 1, so it will interfere with the battery cell during assembly. By setting the support platform 4 to lift the battery cell, interference between the bottom of the battery cell and the transition portion 21 can be avoided. In specific setting, it only needs to satisfy that it can avoid the lower end of the transition portion 21, and the height of the support platform 4 is too high, which will lead to a large space occupation, so it needs to be limited to be less than the radius of the transition portion 21.

[0077] According to a second aspect of the application, a battery is provided, which comprises a battery cell and the above-mentioned battery shell structure, and the battery cell is arranged in the accommodation cavity 3.

[0078] Based on the above-mentioned embodiments of the present application, the battery provided by the present application comprises the above-mentioned battery shell structure. Through the above-mentioned arrangement, the battery cell can be supported by the arrangement of the support table 4, so as to avoid interference between the battery cell and the transition part 21 during assembly. At the same time, compared with the bottom support sheet 6 and other structures in the prior art, the fixing process between the bottom support sheet 6, the battery cell and the battery shell can be omitted, so as to simplify the overall assembly process of the battery, and to avoid damage to the battery cell to a certain extent during assembly.

[0079] Specifically, when the battery cell in the present application is arranged in the battery shell structure, an insulating film or the like can be arranged between the battery cell and the side plate 2 and the bottom plate 1 of the shell structure, so as to realize insulation protection and sealing of the battery cell.

[0080] In addition, the battery in the present application is not limited to the above structure, and can comprise various structures such as a jumper and a top cover, which can be arranged according to the use requirements of the battery and other factors, and the present application does not make specific limitations.

[0081] In addition, it should be noted that the battery cell in the present application can be arranged as a laminated battery cell structure made by a lamination process, or as a roll core structure 5 made by a roll core process.

[0082] Further, in some embodiments of the present application, as shown in Figure 8 when the battery cell is arranged as a roll core structure 5, and the two ends of the roll core structure 5 along the length direction can have an arc-shaped winding area 51, the projection area of the winding area 51 on the support table 4 is S3, and the projection area of the other part of the roll core structure 5 on the support table 4 is S4, S4>S3.

[0083] Based on the above-mentioned embodiments of the present application, when the battery cell is arranged as a roll core structure 5, the size and strength of the winding area 51 formed at the end of the roll core structure 5 due to winding are usually smaller than those of the middle part of the roll core structure 5, so that by limiting the sizes of the areas of the winding area 51 and the other area of the roll core structure 5 projected on the support table 4, the most contact positions of the roll core structure 5 are located in the middle part of the roll core structure 5 except the winding area 51 when the roll core structure 5 contacts with the support table 4, so as to ensure the supporting effect, and to avoid damage to the battery cell to a certain extent.

[0084] In addition, it should be noted that when the winding core structure 5 is arranged in the shell, the height direction of the winding core structure 5 is generally arranged to correspond to the height direction of the accommodating cavity 3, so as to be arranged in the accommodating cavity 3. At this time, the thickness direction of the winding core structure 5 corresponds to the width direction of the accommodating cavity 3, and the length direction of the winding core structure 5 corresponds to the length direction of the accommodating cavity 3. At the same time, the "projected area of the winding area 51 on the support table 4" refers to the area of the overlapping region of the projection of the winding area 51 along the height direction and the support table 4. The "projected area of the other part of the winding core structure 5 except the winding area 51 on the support table 4" refers to the area of the overlapping region of the projection of the other part of the winding core structure 5 along the height direction and the support table 4.

[0085] According to a third aspect of the present application, a power consuming device is provided, which comprises a device body and the above-mentioned battery. The device body is internally provided with a power supply cavity, and the battery is arranged in the power supply cavity.

[0086] Specifically, in the present application, the power consuming device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0087] Based on the above-mentioned embodiments of the present application, the power consuming device provided by the present application comprises the above-mentioned battery, and thus also has the above-mentioned beneficial effects. To avoid repetition, they will not be described here.

[0088] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the specific details in the above-mentioned embodiments. Within the technical concept range of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection range of the present application.

[0089] In addition, it should be noted that the various specific technical features described in the above-mentioned specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations will not be described again in the present application.

[0090] In addition, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the present application, and it should also be considered as disclosed in the present application.

Claims

1. A battery casing structure for accommodating battery cells, characterized in that, The battery shell structure comprises: a bottom plate and a side plate, which enclose an open-ended accommodating cavity, and the battery cell is arranged in the accommodating cavity; a support table arranged on the bottom plate and located in the accommodating cavity, and the support table is arranged integrally with the bottom plate; wherein the support table is located between the bottom plate and the battery cell to support the battery cell.

2. The battery case structure according to claim 1, wherein The lower surface of the bottom plate is arranged as a planar structure, the thickness of the support table is H1, the thickness of other regions of the bottom plate except the support table is H2, and H1>H2.

3. The battery case structure according to claim 1, wherein The lower surface of the bottom plate is formed with a recess structure towards the accommodating cavity, and the recess structure is at least partially located in the accommodating cavity to form the support table.

4. The battery case structure according to claim 3, wherein The thickness of the bottom plate and the thickness of the recess structure are both H3.

5. The battery case structure according to claim 2, wherein The bottom plate and the side plate have an arc-shaped transition portion therebetween, and the radius of the transition portion is R; The spacing between the support table and the side plate is H4, and H4≥R+H1.

6. The battery case structure according to claim 2, wherein The area of the support table is S1, the area of the bottom plate is S2, and 0.1≤S1 / S2≤0.

85.

7. The battery case structure according to claim 1, wherein The bottom plate and the side plate have an arc-shaped transition portion therebetween, and the radius of the transition portion is R; The height of the support table protruding from the bottom plate is H5, and 0.1mm≤H5≤R.

8. A battery, characterized by The battery comprises: a battery cell; and The battery shell structure according to any one of claims 1-7, wherein the battery cell is arranged in the accommodating cavity.

9. The battery of claim 8, wherein, The battery cell is arranged as a jelly-roll structure, and the jelly-roll structure has arc-shaped winding regions at both ends in the length direction, the projected area of the winding regions on the support table is S3, the projected area of other parts of the jelly-roll structure on the support table except the winding regions is S4, and S4>S3.

10. An electric device, characterized by The battery comprises: a device main body with an energy supply cavity inside; and The battery according to claim 8 or 9, wherein the battery is arranged in the energy supply cavity.

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