Battery shell, battery and electric device

Abstract

The invention relates to the technical field of batteries, in particular to a battery shell, a battery and an electric device. The battery shell comprises two first side plates arranged along a first direction and two second side plates arranged along a second direction, the two first side plates and the two second side plates are alternately connected to form a hollow shell structure with two open ends, and each first side plate comprises a first part, a first connecting part and a second part which are connected with each other; the distance between the two first parts is larger than the distance between the two second parts, and the pole group is contained in the empty shell structure. According to the battery shell, the distance between the two first parts is larger than the distance between the two second parts, so that the internal space of the battery shell is increased, the volume of a pole group is further increased, and the capacity and the energy density of the battery are improved; in addition, the method can adapt to specific application scene requirements, and space resources are fully utilized.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery casing, a battery and an electrical device. Background Art

[0002] Amid the rapid development of new energy technologies, batteries, as core energy storage components, are widely used in a variety of fields, including electric vehicles, energy storage power stations, and portable electronic devices. As market requirements for battery performance continue to rise, the demand for increased battery capacity and safety performance is becoming increasingly urgent.

[0003] At present, the battery casing in the related art is usually designed as a regular rectangular structure. This standardized rectangular casing has certain conveniences in production and manufacturing, and can achieve large-scale production. However, in actual application, this rectangular battery casing has many limitations. Due to the large differences in the shape, size and spatial layout requirements of the battery under different working conditions, the regular rectangular battery casing is difficult to adapt to the complex and changeable installation environment, and cannot make full use of limited space resources, resulting in difficulty in improving the overall energy density of the battery system and unable to meet the growing demand for capacity increase.

[0004] Therefore, there is an urgent need for a battery housing, a battery, and an electrical device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a battery housing, a battery and an electrical device, which increase the internal space of the battery housing, thereby increasing the volume of the electrode group, improving the capacity and energy density of the battery, and can also adapt to the needs of specific application scenarios and make full use of space resources.

[0006] To achieve the above objectives, the following technical solutions are provided:

[0007] A battery case includes two first side plates arranged along a first direction and two second side plates arranged along a second direction. The two first side plates and the two second side plates are alternately connected to form a hollow shell structure with open ends. The first side plates include a connected first portion, a first connecting portion, and a second portion. The spacing between the two first portions is greater than the spacing between the two second portions. The electrode group is accommodated in the hollow shell structure, and the first direction is perpendicular to the second direction.

[0008] As an optional solution, the second side panel includes:

[0009] a main body, wherein two ends of the main body along the first direction are respectively connected to corresponding first side panels;

[0010] The first protrusion is formed by extending outward from at least one end of the main body along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0011] As an optional solution, the maximum dimension of the first protrusion in the first direction is L1, the maximum dimension of the main body in the first direction is L2, and 0.3≤L1 / L2≤0.55;

[0012] And / or, a dimension of the first protrusion in the third direction is H1, 7.5 mm ≤ H1 ≤ 12 mm.

[0013] As an optional solution, the wall thickness of the first side plate and / or the main body is T1, the thickness of the first protruding portion is T2, and 0.05 mm ≤ T1 - T2 ≤ 0.2 mm.

[0014] As an optional solution, a dimension of the first portion in the third direction is A, a sum of dimensions of the first portion and the first connecting portion in the third direction is B, 0.75≤A / B≤0.92, and the first direction, the second direction, and the third direction are perpendicular to each other;

[0015] And / or, a dimension of the first connecting portion in the first direction is H2, 8mm≤H2≤25mm.

[0016] A battery comprises a cover plate assembly and an electrode group, and also comprises the above-mentioned battery shell, wherein the electrode group is accommodated in the battery shell, and the cover plate assembly covers the opening of the battery shell.

[0017] As an optional solution, the cover assembly includes a cover body, which is connected to the ends of the first side plate and the second side plate. The cover body includes a second protrusion and a flat plate portion that are connected, the second protrusion forms a groove, and the first protrusion is located in the groove.

[0018] As an optional solution, the cover plate assembly further includes a pole, the pole includes a column portion, the column portion is penetrated by the flat plate portion, and the top surface of the second protrusion is higher than the top surface of the column portion.

[0019] As an optional solution, the pole includes a second connecting portion, and the pole lug of the pole group is connected to the second connecting portion.

[0020] An electric device comprises an electric device body and the above-mentioned battery.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The battery case provided by the present invention includes alternating first and second side panels. The first side panels include a first portion, a first connecting portion, and a second portion, wherein the spacing between the two first portions is greater than the spacing between the two second portions. By setting the spacing between the two first portions greater than the spacing between the two second portions, the internal space of the battery case is increased, thereby increasing the volume of the electrode assembly, improving the battery's capacity and energy density. Furthermore, the battery case can be adapted to the needs of specific application scenarios and fully utilize space resources.

[0023] The battery provided by the present invention increases the internal space of the battery housing by applying the above-mentioned battery housing, thereby increasing the volume of the electrode group, improving the capacity and energy density of the battery, and can also adapt to the needs of specific application scenarios and make full use of space resources.

[0024] The electric device provided by the present invention, by applying the above-mentioned battery, has higher capacity and energy density, thereby improving the endurance of the electric device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0026] Figure 1 A schematic structural diagram of a battery provided in Example 1 of the present invention;

[0027] Figure 2 A partial cross-sectional view of a battery provided in Example 1 of the present invention;

[0028] Figure 3 A first view of the cover plate assembly provided in embodiment 1 of the present invention;

[0029] Figure 4 A second view of the cover plate assembly provided in the first embodiment of the present invention;

[0030] Figure 5 A first view of a battery housing provided in accordance with the first embodiment of the present invention;

[0031] Figure 6 A second view of the battery housing provided in embodiment 1 of the present invention;

[0032] Figure 7 A third view of the battery housing provided in Example 1 of the present invention;

[0033] Figure 8 This is a schematic structural diagram of a vehicle provided in Example 2 of the present invention.

[0034] Reference numerals:

[0035] 10000, vehicle;

[0036] 1000, battery;

[0037] 100. Battery housing;

[0038] 10. First side panel; 11. First portion; 12. Second portion; 13. First connecting portion;

[0039] 20. Second side panel; 21. Main body; 22. First raised portion;

[0040] 200, cover plate assembly; 210, cover plate body; 2101, flat plate portion; 2102, second raised portion; 2103, reinforcing rib; 220, pole; 2201, column portion; 2202, plate portion; 2203, second connecting portion; 230, rivet block; 240, first insulating member; 250, second insulating member; 260, sealing member;

[0041] 300, pole group; 310, pole ear;

[0042] 2000, controller; 3000, motor. DETAILED DESCRIPTION

[0043] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0046] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0049] Example 1

[0050] like Figure 1-Figure 2As shown, this embodiment provides a battery 1000, which includes a battery housing 100 and an electrode group 300. The electrode group 300 is disposed within the battery housing 100, and the battery housing 100 is used to support and protect the electrode group 300. The battery housing 100 can be made of plastic or metal. When the battery housing 100 is made of metal, it has better heat dissipation performance and higher strength, and can also provide support.

[0051] The electrode group 300 in the present application can be formed by winding or by laminating. Generally, the electrode group 300 includes at least a positive electrode sheet, a separator, and a negative electrode sheet.

[0052] Optionally, the battery housing 100 is provided with at least one opening, and the battery 1000 further includes a cover assembly 200, which is provided on the opening of the battery housing 100, the electrode group 300 is connected to the cover assembly 200, and the cover assembly 200 is connected to the main body of an external electrical device, thereby realizing the power supply function of the battery 1000 to the main body of the electrical device.

[0053] like Figure 2-Figure 4 As shown, the cover plate assembly 200 includes a cover plate body 210, a terminal 220, and a rivet block 230. The cover plate body 210 covers the opening of the battery housing 100. The terminal 220 includes a column portion 2201 and a plate portion 2202. The column portion 2201 is provided through the cover plate body 210. The terminal 220 passes through one side of the cover plate body 210 and is riveted to the rivet block 230. The cover plate body 210 is sandwiched between the plate portion 2202 and the rivet block 230, thereby achieving the assembly of the terminal 220 and the rivet block 230 with the cover plate body 210. The plate portion 2202 of the terminal 220 is connected to the terminal lug 310 of the electrode group 300. The terminal 220 can short-circuit the electrode group 300 with the outside, facilitating the charging and discharging of the battery 1000.

[0054] In the related art, due to limitations in the assembly process for the electrode group 300, the gap between the electrode group 300 and the plate body 2202 at the welding location is relatively large. To prevent the excessive length of the tab 310, which may cause tearing and short circuiting, a connecting piece is provided between the tab 310 and the plate body 2202. However, this arrangement increases the number of structural components and increases production costs. To address this issue, the pole post 220 in this embodiment also includes a second connecting portion 2203, which is provided on the side of the plate body 2202 near the electrode group 300. The pole tab 310 of the pole group 300 is connected to the second connecting portion 2203. This eliminates the need for a connecting piece and simplifies the assembly steps of the tab 310 and the pole post 220, reducing production costs.

[0055] Optionally, the cover assembly 200 also includes a seal 260, which is clamped between the pole 220 and the cover body 210. The seal 260 can insulate and isolate the pole 220 and the cover body 210 to prevent the pole 220 and the cover body 210 from short-circuiting. At the same time, the seal 260 can seal the gap between the column part 2201 and the cover body 210 to prevent leakage of electrolyte or gas.

[0056] Optionally, the cover assembly 200 also includes a first insulating member 240 and / or a second insulating member 250. The first insulating member 240 is arranged between the rivet block 230 and the cover body 210 to ensure insulation between the rivet block 230 and the cover body 210 to avoid short circuit between the rivet block 230 and the cover body 210; the second insulating member 250 is arranged on the inner side of the cover body 210. The second insulating member 250 can abut against the pole group 300, fix the pole group 300, avoid displacement of the pole group 300, and avoid short circuit between the pole group 300 and the cover body 210.

[0057] At present, the battery housing 100 in the related art is usually designed as a regular rectangular structure. This standardized rectangular housing has certain conveniences during production and manufacturing, and can achieve large-scale production. However, in actual applications, this rectangular battery housing 100 has many limitations. Due to the large differences in the shape, size and spatial layout requirements of the battery 1000 under different working conditions, the regular rectangular battery housing 100 is difficult to adapt to the complex and changeable installation environment, and cannot make full use of limited space resources, resulting in the difficulty in improving the overall energy density of the battery system and being unable to meet the growing demand for capacity increase.

[0058] In order to solve the above problems, Figure 1 、 Figure 2 、 Figure 5-Figure 7 As shown, the battery case 100 provided in this embodiment includes two first side panels 10 arranged along a first direction and two second side panels 20 arranged along a second direction. The two first side panels 10 and the two second side panels 20 are alternately connected to form a hollow shell structure with open ends. The electrode group 300 is accommodated within the hollow shell structure. The first side panel 10 includes a first portion 11, a first connecting portion 13, and a second portion 12, which are connected to each other. The spacing between the two first portions 11 is greater than the spacing between the two second portions 12. By setting the spacing between the two first portions 11 to be greater than the spacing between the two second portions 12, the internal space of the battery case 100 is increased, thereby increasing the volume of the electrode group 300 and improving the capacity and energy density of the battery 1000. In addition, it can also adapt to the needs of specific application scenarios. For example, if the installation environment is provided with a sink, the first portion 11 can be placed in the sink to fully utilize space resources.

[0059] Optionally, the second side plate 20 includes a main body 21 and a first protrusion 22, and the two ends of the main body 21 along the first direction are respectively connected to the corresponding first side plate 10, and the first protrusion 22 is formed by extending outward from at least one end of the main body 21 along the third direction. By providing the first protrusion 22, the internal space of the battery casing 100 is further increased, the volume of the electrode group 300 is further increased, and the capacity and energy density of the battery 1000 are improved.

[0060] Optionally, the cover body 210 includes a second protrusion 2102 and a flat plate portion 2101 connected to each other, and the cover body 210 is connected to the ends of the first side plate 10 and the second side plate 20. The second protrusion 2102 forms a groove, and the first protrusion 22 is located in the groove, so that the cover body 210 is adapted to the end of the battery housing 100 provided with the first protrusion 22.

[0061] In this embodiment, the column portion 2201 of the pole 220 is inserted into the flat plate portion 2101, and the top surface of the second protrusion 2102 is higher than the top surface of the column portion 2201 and / or the top surface of the rivet block 230, so that the second protrusion 2102 can effectively protect the pole 220 and the rivet block 230, and reduce the situation where the pole 220 and the rivet block 230 are bumped or damaged during the manufacturing process; in addition, in the process of grouping the battery 1000, the top surface of the second protrusion 2102 is higher than the top surface of the column portion 2201 and / or the top surface of the rivet block 230, which also provides space for welding the tabs, thereby saving the assembly space of the module, improving the module assembly rate, and thereby improving the performance of the battery 1000.

[0062] In this embodiment, an explosion-proof hole is provided on the second raised portion 2102, and an explosion-proof valve (not shown in the figure) is welded inside the explosion-proof hole. The second insulating member 250 is provided with an air vent connected to the explosion-proof hole. When an abnormality occurs inside the battery 1000, the air pressure in the battery shell 100 reaches the explosion-proof threshold of the explosion-proof valve, the explosion-proof valve opens, and the gas is discharged from the explosion-proof hole through the air vent, releasing the internal pressure of the shell, preventing the battery 1000 from thermal runaway and explosion and fire, and improving the safety of the battery 1000.

[0063] Optionally, the cover body 210 further includes a reinforcing rib 2103 , which is connected to the flat plate portion 2101 and / or the second raised portion 2102 to improve the overall strength of the cover body 210 , thereby reducing the risk of deformation of the cover body 210 .

[0064] Optionally, the center line of the first protrusion 22 along the third direction coincides with the center line of the main body 21 along the third direction, that is, the first protrusion 22 is located in the middle of the main body 21 along the first direction, that is, the battery shell 100 has a symmetrical structure, which on the one hand can make the exhaust path of the battery 1000 more balanced, and on the other hand can minimize the impact of the setting of the first protrusion 22 on the size of the pole ears 310 on both sides.

[0065] Optionally, the maximum dimension of the first protrusion 22 in the first direction is L1, and the maximum dimension of the main body 21 in the first direction is L2, with 0.3≤L1 / L2≤0.55. This ensures that the capacity of the electrode assembly 300 is increased and that there is sufficient installation space for the tabs 310. When the value of L1 / L2 is too small, the first protrusion 22 does not occupy a sufficient proportion, resulting in insufficient capacity increase at this location of the electrode assembly 300, affecting the capacity of the electrode assembly 300. When the value of L1 / L2 is too large, the first protrusion 22 occupies an excessively large proportion, and there is insufficient space for the tabs 310 on both sides of the electrode assembly 300, failing to meet the overcurrent requirements of the battery 1000. Exemplarily, the value of L1 / L2 can be 0.3, 0.35, 0.4, 0.45, 0.5, or 0.55. In other embodiments, the value of L1 / L2 can be any value between 0.3 and 0.55, or a range between any two values.

[0066] Optionally, the dimension of the first protrusion 22 in the third direction is H1, 7.5mm≤H1≤12mm, to ensure the capacity increase requirement of the electrode group 300 and to ensure that the first protrusion 22 has a good molding effect. When the value of H1 is too small, the capacity of the electrode group 300 is insufficiently increased, affecting the capacity of the electrode group 300. The first protrusion 22 is formed by a stamping process. When the value of H1 is too large, the wall thickness of the first protrusion 22 is thin, the molding quality is poor, and it is difficult to meet the protection requirements of the electrode group 300. Exemplarily, the dimension H1 of the first protrusion 22 in the third direction can be 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm or 12mm. In other embodiments, the value of H1 is not limited to this and can be adjusted as needed.

[0067] Optionally, the wall thickness of the first side plate 10 and / or the main body 21 is T1, and the thickness of the first protrusion 22 is T2, 0.05mm≤T1-T2≤0.2mm, to ensure that the first protrusion 22 has good molding quality. When the value of T1-T2 is too small, the wall thickness of the main body 21 is insufficient, and it is difficult to stamp the first protrusion 22 when stamping, and the molding yield of the battery shell 100 is reduced; when the value of T1-T2 is too large, the material flow is difficult when stamping the first protrusion 22, and it is difficult to stamp and form, and the shape accuracy is insufficient. Exemplarily, the value of T1-T2 can be 0.05mm, 0.1mm, 0.15mm or 0.2mm. In other embodiments, the value of T1-T2 can be any value between 0.05mm and 0.2mm or a range between any two values.

[0068] Optionally, the wall thickness T1 of the first side plate 10 and / or the main body 21 satisfies: 0.35mm≤1≤0.8mm, so that the battery housing 100 has sufficient supporting strength while avoiding an excessively large value of T1 that increases the weight of the battery 1000. For example, the value of T1 can be 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm or 0.8mm. In other embodiments, the value of T1 is not limited thereto and can be adaptively adjusted according to actual needs.

[0069] Optionally, the dimension of the first part 11 in the third direction is A, and the sum of the dimensions of the first part 11 and the first connecting part 13 in the third direction is B, and 0.75≤A / B≤0.92, so as to ensure the capacity increase requirement of the electrode group 300, while ensuring that the first side plate 10 has a good forming yield. When the value of A / B is too small, the proportion of the first part 11 is too small, resulting in insufficient increase in the capacity of the electrode group 300, affecting the capacity of the electrode group 300; when the value of A / B is too large, the proportion of the first part 11 is too large, resulting in a shorter transition position of the first connecting part 13, which is not conducive to stamping. Exemplarily, the value of A / B can be 0.75, 0.8, 0.85, 0.9 or 0.92. In other embodiments, the value of A / B can be any value between 0.75 and 0.92 or a range between any two values.

[0070] Optionally, the dimension A of the first portion 11 in the third direction satisfies: 50 mm ≤ A ≤ 300 mm. For example, the dimension A of the first portion 11 in the third direction can be 50 mm, 100 mm, 150 mm, 200 mm, 250 mm, or 300 mm. In other embodiments, the value of A is not limited thereto and can be adjusted as needed.

[0071] Optionally, the dimension H2 of the first connecting portion 13 in the first direction is 8mm≤H2≤25mm, to ensure the capacity requirement of the electrode group 300 and to ensure that the first side plate 10 has a good molding yield. Exemplarily, the dimension H2 of the first connecting portion 13 in the first direction can be 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm or 25mm. In other embodiments, the value of H2 is not limited to this and can be adjusted as needed.

[0072] Table 1

[0073]

[0074] Table 1 shows the relationship between the dimensions A and A / B of the first portion 11 in the third direction, the dimension H1 of the first protrusion 22 in the third direction, the dimensions H2 and L1 / L2 of the first connection portion 13 in the first direction, and the wall thicknesses T1 and T1-T2 of the first side plate 10 and / or the main body 21. Examples 1-6 show the values ​​of A, A / B, H1, H2, L1 / L2, T1, and T1-T2 for batteries 1000 with a qualified yield rate greater than 98%. Comparative Examples 1-6 show the values ​​of A / B, L1 / L2, and T1-T2 for batteries 1000 with a qualified yield rate less than 98%. Specifically, after the battery 1000 was assembled, the molding quality and appearance quality of the battery 1000 were tested to determine the qualified yield rate of the battery 1000 during the manufacturing process.

[0075] The values ​​of A, A / B, H1, H2, L1 / L2, T1, and T1-T2 in Examples 1-6 were all within the specified ranges, and the qualified yield rate of battery 1000 was greater than 98%. The manufacturing process yield rates of battery case 100 and cover assembly 200 also met the required yield rate. The capacity and appearance of electrode assembly 300 were normal.

[0076] In comparative example 1, the value of A / B is too small, and the proportion of the first portion 11 is too small, resulting in insufficient increase in the capacity of the electrode group 300, affecting the capacity of the electrode group 300.

[0077] In comparative example 2, the value of A / B is too large, and the first portion 11 accounts for too large a proportion, resulting in a shorter transition position of the first connecting portion 13, which is not conducive to stamping.

[0078] In comparative example 3, the value of L1 / L2 is too small, and the first protrusion 22 accounts for an insufficient proportion, resulting in insufficient increase in the capacity of the electrode group 300 at this location, affecting the capacity of the electrode group 300.

[0079] In comparative example 4, the value of L1 / L2 is too large, the first protrusion 22 accounts for too large a proportion, and there is insufficient space for arranging the tabs 310 on both sides of the electrode group 300, which cannot meet the overcurrent requirement of the battery 1000.

[0080] In Comparative Example 5, the value of T1-T2 is too small, the wall thickness of the main body 21 is insufficient, and it is difficult to stamp the first protrusion 22 , which reduces the molding yield of the battery case 100 .

[0081] In Comparative Example 6, the value of T1-T2 is too large, and the material flow is difficult when stamping the first protrusion 22, making it difficult to stamp and form, and the shape accuracy is insufficient.

[0082] Example 2

[0083] This embodiment provides an electrical device, which includes an electrical device body and the battery 1000 provided in Example 1. The battery 1000 can provide electrical energy to the electrical device body, thereby enabling the electrical device body to automatically complete preset actions through electrical energy, ensuring good performance of the electrical device body, and ensuring the service life and safety performance of the electrical device.

[0084] Specifically, the main body of the electrical device can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, or an electric tool. A vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle; a new energy vehicle can be a pure electric vehicle or a hybrid vehicle; a spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft; an electric toy includes a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy; an electric tool includes a metal cutting power tool, a grinding power tool, an assembly power tool, and a railway power tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, or an electric planer. This embodiment does not limit the main body of the electrical device.

[0085] The following examples are for convenience of description. Figure 8 As shown, an embodiment of the present application is described using a vehicle 10000 as an example of an electrical device. Vehicle 10000 is internally provided with a battery 1000, which can be located at the bottom, head, or tail of vehicle 10000. There can be one or more batteries 1000, and multiple batteries 1000 can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to multiple batteries 1000 being connected in both series and parallel configurations.

[0086] Battery 1000 can be used to power vehicle 10000. For example, battery 1000 can serve as an operating power source for vehicle 10000. Vehicle 10000 may also include a controller 2000 and a motor 3000. Controller 2000 is used to control battery 1000 to power motor 3000, for example, to meet the power requirements of vehicle 10000 during startup, navigation, and driving.

[0087] In some embodiments of the present application, the battery 1000 can serve not only as an operating power source for the vehicle 10000, but also as a driving power source for the vehicle 10000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 10000.

[0088] Note that throughout this specification, references to terms such as "some embodiments" and "other embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with those embodiments or examples are included in at least one embodiment or example of the present invention. Throughout this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be incorporated in any suitable manner in any one or more embodiments or examples.

[0089] The above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A battery housing, characterized in that: The invention comprises two first side plates (10) arranged along a first direction and two second side plates (20) arranged along a second direction, wherein the two first side plates (10) and the two second side plates (20) are alternately connected to form a hollow shell structure with two ends being open, wherein the first side plate (10) comprises a first portion (11), a first connecting portion (13) and a second portion (12) connected to each other, wherein the spacing between the two first portions (11) is greater than the spacing between the two second portions (12), and the pole group (300) is accommodated in the hollow shell structure, and the first direction is perpendicular to the second direction.

2. The battery case according to claim 1, wherein: The second side plate (20) comprises: a main body (21), wherein both ends of the main body (21) along the first direction are respectively connected to the corresponding first side panels (10); The first protrusion (22) is formed by extending outward from at least one end of the main body (21) along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

3. The battery case according to claim 2, characterized in that The maximum dimension of the first protrusion (22) in the first direction is L1, the maximum dimension of the main body (21) in the first direction is L2, and 0.3≤L1 / L2≤0.55; And / or, the dimension of the first protrusion (22) in the third direction is H1, 7.5 mm ≤ H1 ≤ 12 mm.

4. The battery case according to claim 2, wherein: The wall thickness of the first side plate (10) and / or the main body (21) is T1, the thickness of the first protruding portion (22) is T2, and 0.05 mm ≤ T1-T2 ≤ 0.2 mm.

5. The battery housing according to any one of claims 1 to 4, characterized in that: The dimension of the first portion (11) in the third direction is A, the sum of the dimensions of the first portion (11) and the first connecting portion (13) in the third direction is B, 0.75≤A / B≤0.92, and the first direction, the second direction and the third direction are perpendicular to each other; And / or, the dimension of the first connecting portion (13) in the first direction is H2, 8mm≤H2≤25mm.

6. A battery comprising a cover plate assembly (200) and an electrode group (300), characterized in that: It also includes a battery casing according to any one of claims 1 to 5, wherein the electrode group (300) is accommodated in the battery casing, and the cover plate assembly (200) covers the opening of the battery casing.

7. The battery according to claim 6, characterized in that The cover plate assembly (200) includes a cover plate body (210), wherein the cover plate body (210) is connected to the ends of the first side plate (10) and the second side plate (20), and the cover plate body (210) includes a second protruding portion (2102) and a flat plate portion (2101) connected to each other, wherein the second protruding portion (2102) forms a groove, and the first protruding portion (22) is located in the groove.

8. The battery according to claim 7, characterized in that The cover plate assembly (200) further includes a pole (220), the pole (220) including a column portion (2201), the column portion (2201) passing through the flat plate portion (2101), and the top surface of the second protrusion (2102) is higher than the top surface of the column portion (2201).

9. The battery according to claim 8, characterized in that The pole (220) includes a second connecting portion (2203), and the pole lug (310) of the pole group (300) is connected to the second connecting portion (2203).

10. An electrical device, comprising an electrical device body, characterized in that: Also included is a battery as claimed in any one of claims 6 to 9.

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