Battery shell, battery, battery pack and electric equipment

Abstract

The utility model discloses a battery shell, a battery, a battery pack and electric equipment, and relates to the technical field of batteries, the battery shell comprises a shell body, a first cover plate and a second cover plate, the shell body is annular and forms a containing cavity in a surrounding mode, the containing cavity is provided with a first opening and a second opening which are opposite, the first opening is covered with the first cover plate, and the second opening is covered with the second cover plate. The edge of at least one of the shell body, the first cover plate and the second cover plate forms a flange, and the flange is located on the outer side of the containing cavity. According to the battery shell, the space utilization rate of the accommodating cavity can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery housing, a battery, a battery pack and an electrical device. Background Art

[0002] In the prior art, it is impossible to completely eliminate fillets during the connection manufacturing process of the closed surface of the battery housing, resulting in fillets at the corners of the battery housing. The setting of the fillets easily occupies the space of the accommodation cavity inside the battery housing, causing the space inside the accommodation cavity not to be fully utilized, leading to an increase in the size of the battery. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a battery housing that can improve the space utilization rate of the accommodation cavity.

[0004] The utility model also provides a battery having the above battery housing.

[0005] The utility model also provides a battery pack having the above battery.

[0006] The utility model also provides an electrical device having the above battery or battery pack.

[0007] The battery housing according to an embodiment of the utility model includes: a housing body, the housing body is annular and surrounds to form an accommodation cavity, and the accommodation cavity has opposite first and second openings; a first cover plate, the first cover plate covers the first opening; a second cover plate, the second cover plate covers the second opening; a flange is formed at the edge of at least one of the housing body, the first cover plate and the second cover plate, and the flange is located outside the accommodation cavity.

[0008] According to the battery housing of the embodiment of the utility model, the accommodation cavity can have a larger space at the corners, so as to improve the consistency between the shape of the accommodation cavity and the shape of the battery cell, enable the corners of the battery cell to be accommodated at the corners of the accommodation cavity, improve the space utilization rate inside the accommodation cavity, and contribute to the miniaturization of the overall battery or the reduction of the thickness of the battery.

[0009] In some embodiments, the housing body includes an outer arc section, the outer arc section bends towards the side away from the accommodation cavity, the outer arc section surrounds the first opening or the second opening, and the flange is connected to the outer arc section; wherein, a clearance is formed between the outer arc section and the first cover plate or the second cover plate.

[0010] In some embodiments, at least one of the first cover plate and the second cover plate includes: a main body plate and a first flange located at the edge of the main body plate; the housing body includes a main housing ring and a second flange located at the edge of the main housing ring, and the second flange is arranged corresponding to the first flange; the main body plate covers one side of the main housing ring, and the first flange and the second flange are stacked and connected to form the flange.

[0011] Further, the first flange is in the same plane as the main body plate, and the second flange and the main housing ring are connected by an outer arc section in a transitional manner; wherein, an avoidance gap is formed between the outer arc section and the main body plate or the first flange, and the avoidance gap communicates with the accommodation cavity.

[0012] In some embodiments, a first connection area formed by a welding molten pool is provided between the first flange and the second flange, and the first connection area surrounds the main body plate.

[0013] Further, the thickness of the first flange is greater than the thickness of the second flange, and the first connection area extends from the surface of the second flange away from the first flange to the inside of the first flange; or, the thickness of the first flange is less than the thickness of the second flange, and the first connection area extends from the surface of the first flange away from the second flange to the inside of the second flange.

[0014] In some embodiments, the first flange and the second flange are completely attached.

[0015] In some embodiments, the flange is provided with a fixing portion for fixing.

[0016] Further, the fixing portion is provided on the first flange and the second flange; the first connection area is located on the side of the fixing portion close to the main body plate; a second connection area formed by a welding molten pool is provided between the first flange and the second flange, and the second connection area is located on the side of the fixing portion away from the main body plate.

[0017] In some embodiments, the fixing portion includes a plurality of fixing holes, the fixing holes are arranged through along the thickness direction of the flange, and the plurality of fixing holes are arranged at intervals along the circumferential direction of the housing body.

[0018] Further, the flange includes a plurality of lugs, the lugs are arranged at intervals along the circumferential direction of the housing body, and the fixing holes are arranged on the lugs.

[0019] In some embodiments, the flange is located at the edge of the first cover plate; the edge of the second cover plate coincides with the edge of the housing body, and a third connection area formed by a welding molten pool is provided therebetween, and the third connection area surrounds the second opening.

[0020] Further, the third connection area extends from the surface of the second cover plate away from the first cover plate into the interior of the housing body; alternatively, the third connection area extends from the edge corner of the second cover plate into the interior of the housing body.

[0021] In some embodiments, a pressure relief valve is provided on at least one of the first cover plate and the second cover plate.

[0022] In some embodiments, the housing body is a stamping part or an extrusion part.

[0023] The battery according to an embodiment of the present invention includes: the battery housing described in the above embodiment; an electric core, the electric core is disposed in the accommodation cavity; a conductive terminal, the conductive terminal penetrates through the housing body and is connected to the tab of the electric core.

[0024] The battery according to an embodiment of the present invention, by adopting the battery housing of the above embodiment, the accommodation cavity can have a larger space at the corners, so as to improve the consistency between the shape of the accommodation cavity and the shape of the electric core, enable the corners of the electric core to be accommodated at the corners of the accommodation cavity, improve the space utilization rate in the accommodation cavity, and is beneficial to the miniaturization of the overall battery or the reduction of the thickness of the battery.

[0025] In some embodiments, the battery housing is a conductive member, one tab of the electric core is connected to the battery housing, the other tab is connected to the conductive terminal, and an insulating member is interposed between the conductive terminal and the battery housing.

[0026] The battery pack according to an embodiment of the present invention includes at least two batteries of the above embodiment.

[0027] The battery pack according to an embodiment of the present invention, by adopting the battery of the above embodiment, can improve the space utilization rate of the accommodation cavity in the battery, is beneficial to the miniaturization of the overall battery or the reduction of the thickness of the battery, thereby reducing the volume of the battery pack.

[0028] The electrical equipment according to an embodiment of the present invention includes the battery of the above embodiment or the battery pack of the above embodiment.

[0029] The electrical equipment according to an embodiment of the present invention, by adopting the battery or battery pack of the above embodiment, can improve the space utilization rate of the accommodation cavity in the battery, is beneficial to the miniaturization of the overall battery or the reduction of the thickness of the battery, and can reduce the space occupied by the battery in the electrical equipment.

[0030] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0031] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

[0032] Figure 1 is an exploded view of a battery housing according to an embodiment of the present utility model;

[0033] Figure 2 is Figure 1 a three-dimensional structure diagram of the battery housing of the illustrated embodiment;

[0034] Figure 3 is a structural schematic diagram of a battery housing according to another embodiment of the present utility model;

[0035] Figure 4 is a partial structure diagram of the battery housing according to an embodiment of the present utility model at the flange;

[0036] Figure 5 is an enlarged structure diagram of the battery housing according to an embodiment of the present utility model at the flange;

[0037] Figure 6 is an enlarged structure diagram of the battery housing according to another embodiment of the present utility model at the flange;

[0038] Figure 7 is an enlarged structure diagram of the battery housing according to an embodiment of the present utility model at the third connection area;

[0039] Figure 8 is an enlarged structure diagram of the battery housing according to another embodiment of the present utility model at the third connection area;

[0040] Figure 9 is a structural schematic diagram of a first cover plate according to an embodiment of the present utility model;

[0041] Figure 10 is a partial structural schematic diagram of the battery according to an embodiment of the present utility model at the battery terminal.

[0042] Reference numerals:

[0043] battery housing 100,

[0044] housing body 10, accommodation cavity 11, first opening 12, second opening 13, second flange 14, main housing ring 15, outer arc section 16, avoidance gap 17,

[0045] first cover plate 20, main body plate 21, first flange 22,

[0046] second cover plate 30,

[0047] flange 40, fixing portion 41, lug 42,

[0048] The first connection area 51, the second connection area 52, the third connection area 53,

[0049] the pressure relief valve 60,

[0050] the battery cell 200, the tab 210, the conductive terminal 300, the insulating part 310,

[0051] and the battery 1000. Detailed Embodiment

[0052] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0053] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "thickness", "upper", "lower", "front", "rear", "inner", "outer", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0054] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0055] The battery housing 100, the battery 1000, the battery pack and the electrical device according to the embodiments of the present utility model will be described below with reference to the drawings.

[0056] As Figures 1 - 3As shown, the battery housing 100 according to an embodiment of the present utility model includes: a housing body 10, a first cover plate 20, and a second cover plate 30. The housing body 10 is annular and surrounds to form a receiving cavity 11. The receiving cavity 11 has opposite first opening 12 and second opening 13. The first cover plate 20 covers the first opening 12, and the second cover plate 30 covers the second opening 13. Wherein, a flange 40 is formed at the edge of at least one of the housing body 10, the first cover plate 20, and the second cover plate 30, and the flange 40 is located outside the receiving cavity 11.

[0057] It can be understood that the first cover plate 20 and the second cover plate 30 are directly covered on the housing body 10, so that there is no need for a transition surface between the first cover plate 20 and the housing body 10, and between the second cover plate 30 and the housing body 10, increasing the space at the corners of the receiving cavity 11. That is to say, when the battery cell 200 is disposed in the receiving cavity 11, it can be in contact with the housing body 10, the first cover plate 20, and the second cover plate 30 at the same time, thereby improving the space utilization rate in the receiving cavity 11.

[0058] It should be noted that the corners of the receiving cavity 11 are the space of the receiving cavity 11 at the connection position between the first cover plate 20 and the housing body 10, and the space of the receiving cavity 11 at the connection position between the second cover plate 30 and the housing body 10. That is to say, the corners of the receiving cavity 11 surround the first opening 12 and the second opening 13.

[0059] Thus, the receiving cavity 11 can have a larger space at the corners, thereby improving the consistency between the shape of the receiving cavity 11 and the shape of the battery cell 200, enabling the corners of the battery cell 200 to be accommodated at the corners of the receiving cavity 11, improving the space utilization rate in the receiving cavity 11, and being beneficial to the miniaturization of the overall battery 1000 or the reduction of the thickness of the battery 1000.

[0060] At the same time, the edge of at least one of the housing body 10, the first cover plate 20, and the second cover plate 30 is located outside the receiving cavity 11, reducing or avoiding the encroachment of the flange 40 on the space at the corners of the receiving cavity 11, so as to increase the space at the corners of the receiving cavity 11 and facilitate the flow of the electrolyte at the corners of the receiving cavity 11.

[0061] Preferably, the included angle between the housing body 10 and the first cover plate 20 is 90 degrees, and the included angle between the housing body 10 and the second cover plate 30 is 90 degrees, so that the included angle at the corner of the accommodation cavity 11 is a right angle. It can be understood that for the square battery cell 200, the included angles at the edges are all right angles. Thus, when the square battery cell 200 is disposed in the accommodation cavity 11, the shape of the accommodation cavity 11 can match that of the square battery cell 200, enabling the corners of the square battery cell 200 to be received at the corners of the accommodation cavity 11, allowing the square battery 1000 to fit closely with the housing body 10, the first cover plate 20, and the second cover plate 30, improving the space utilization rate within the accommodation cavity 11, and further enhancing the miniaturization of the overall battery 1000 or reducing the thickness of the battery 1000.

[0062] In this application, the annular shape of the housing body 10 is not limited, and the shapes of the first cover plate 20 and the second cover plate 30 are set corresponding to the annular shape of the housing body 10. For example, the housing body 10 can surround and form a square, an L-shaped structure, etc.

[0063] Preferably, the thickness of the housing body 10 is greater than or equal to 75 um, and the thicknesses of the first cover plate 20 and the second cover plate 30 are greater than or equal to 20 um.

[0064] In some embodiments, the housing body 10 includes an outer arc segment 16, which bends towards the side away from the accommodation cavity 11. The outer arc segment 16 surrounds the first opening 12 or the second opening 13, and the flange 40 is connected to the outer arc segment 16. Among them, a clearance gap 17 is formed between the outer arc segment 16 and the first cover plate 20 or the second cover plate 30.

[0065] It should be noted that the clearance gap 17 communicates with the accommodation cavity 11.

[0066] Thus, the clearance gap 17 can form a space protruding away from the accommodation cavity 11 at the corner of the accommodation cavity 11, thereby increasing the space at the corner of the accommodation cavity 11, further improving the space utilization rate of the accommodation cavity 11, and facilitating the flow of the electrolyte at the corner of the accommodation cavity 11.

[0067] In some embodiments, as Figure 4 shown, at least one of the first cover plate 20 and the second cover plate 30 includes: a main body plate 21 and a first flange 22 located at the edge of the main body plate 21. The housing body 10 includes a main housing ring 15 and a second flange 14 located at the edge of the main housing ring 15. The second flange 14 is arranged corresponding to the first flange 22. The main body plate 21 covers one side of the main housing ring 15, and the first flange 22 and the second flange 14 are stacked and connected to form the flange 40.

[0068] It should be noted that in specific embodiments, it may be that the first cover plate 20 includes a main body plate 21 and a first flange 22, or the second cover plate 30 includes a main body plate 21 and a first flange 22, or while the first cover plate 20 includes a main body plate 21 and a first flange 22, the second cover plate 30 also includes a main body plate 21 and a first flange 22. At this time, the housing body 10 includes two second flanges 14, and the two second flanges 14 respectively correspond to the first flanges 22 of the first cover plate 20 and the second cover plate 30. For the convenience of description, in the following text, the example where the first cover plate 20 includes a main body plate 21 and a first flange 22 is used for description, and the embodiment shown in the accompanying drawings also corresponds to the case where the first cover plate 20 includes a main body plate 21 and a first flange 22.

[0069] Thus, the main body plate 21 and the main housing ring 15 enclose to form a receiving cavity 11, the second flange 14 surrounds the main housing ring 15, and the first flange 22 is located at the edge of the main body plate 21, so that the flange 40 formed by the first flange 22 and the second flange 14 is located outside the receiving cavity 11, and the fixing portion 41 on the flange 40 can be spaced apart from the receiving cavity 11.

[0070] Furthermore, as Figures 4 - 6 shown, the first flange 22 and the main body plate 21 are in the same plane, and the second flange 14 and the main housing ring 15 are transitionally connected through an outer arc section 16.

[0071] Thus, on the premise of not occupying the space inside the receiving cavity 11, the force conduction between the second flange 14 and the main housing ring 15 can be made more uniform, the connection strength between the second flange 14 and the main housing ring 15 can be improved, thereby improving the structural stability of the housing body 10 and reducing or avoiding the risk of fracture between the main housing ring 15 and the second flange 14.

[0072] At the same time, since the flange 40 is outside the receiving cavity 11, that is, both the first flange 22 and the second flange 14 are located on the side of the main housing ring 15 away from the receiving cavity 11. That is to say, the transitional connection of the outer arc section 16 between the second flange 14 and the main housing ring 15 does not occupy the space inside the receiving cavity 11.

[0073] Thus, an avoidance gap 17 is formed between the outer arc section 16 and the main body plate 21 or the first flange 22. The avoidance gap 17 surrounds the second opening 13 and communicates with the receiving cavity 11. The avoidance gap 17 can form a space protruding away from the receiving cavity 11 at the corners of the receiving cavity 11, thereby increasing the space at the corners of the receiving cavity 11, further improving the space utilization rate of the receiving cavity 11, and facilitating the flow of the electrolyte at the corners of the receiving cavity 11.

[0074] In some embodiments, such as Figure 5 、 Figure 6As shown, a first connection area 51 formed by a welding pool is provided between the first flange 22 and the second flange 14, and the first connection area 51 surrounds the main body plate 21.

[0075] Thus, the first flange 22 and the second flange 14 are connected in the first connection area 51 to realize the connection between the first cover plate 20 and the housing body 10. And the first connection area 51 surrounds the main body plate 21, that is, the first connection area 51 surrounds the first opening 12, so as to improve the sealing performance of the first cover plate 20 covering the first opening 12 and the connection firmness between the first cover plate 20 and the housing body 10.

[0076] In this application, the method of forming the welding pool between the first flange 22 and the second flange 14 is not limited, and the method of forming the welding pool can be selected according to the materials of the first cover plate 20, the second cover plate 30 and the housing body 10. For example, by ultrasonic welding, hot melting or laser welding, etc. Among them, when the first cover plate 20, the second cover plate 30 and the housing body 10 are plastic parts, the hot melting method can be used to form the welding pool.

[0077] Furthermore, as Figure 6 shown, the thickness of the first flange 22 is greater than the thickness of the second flange 14, and the first connection area 51 extends from the surface of the second flange 14 far from the first flange 22 to the inside of the first flange 22. Or, as Figure 5 shown, the thickness of the first flange 22 is less than the thickness of the second flange 14, and the first connection area 51 extends from the surface of the first flange 22 far from the second flange 14 to the inside of the second flange 14.

[0078] Thus, it can be ensured that the first connection area 51 can penetrate the first flange 22 or the second flange 14, while reducing the formation difficulty of the first connection area 51, improving the connection firmness and reliability of the first flange 22 and the second flange 14 in the first connection area 51.

[0079] In some embodiments, as Figures 4 - 6 shown, the first flange 22 and the second flange 14 are completely attached. Thus, the force uniformity between the first flange 22 and the second flange 14 can be improved, and the overall structural strength and structural stability of the flange 40 can be improved.

[0080] At the same time, the setting position of the first cover plate 20 in the first opening 12 can be limited, which is convenient for the installation operation of the first cover plate 20 covering the first opening 12. By aligning the edges of the first flange 22 and the second flange 14, the first cover plate 20 can be covered at the correct position of the first opening 12.

[0081] In some embodiments, as Figures 2 - 6As shown, the flange 40 is provided with a fixing portion 41 for fixing. Thus, the battery housing 100 is fixed through the fixing portion 41, which facilitates the fixing operation of the battery housing 100. Moreover, the position of the fixing portion 41 is on the flange 40 and is spaced apart from the accommodation cavity 11, which can reduce or avoid the external force received at the fixing portion 41 from being transmitted to the inside of the accommodation cavity 11, improve the stability of the structure inside the accommodation cavity 11, and enhance the reliability and safety of the battery 1000.

[0082] In addition, when the first flange 22 and the second flange 14 are completely fitted together, they jointly form the flange 40. When the battery housing 100 is fixed through the fixing portion 41, the force received at the fixing portion 41 can be simultaneously transmitted to the first flange 22 and the second flange 14, thereby improving the structural stability of the flange 40 and enhancing the reliability and stability of the battery housing 100 when it is fixed through the flange 40.

[0083] Preferably, the fixing portion 41 is used for the detachable fixed installation of the battery housing 100. For example, the battery housing 100 is detachably installed on a vehicle through the fixing portion 41, which can facilitate the replacement operation of the battery 1000.

[0084] In this application, the manner of fixing the battery housing 100 through the fixing portion 41 is not limited.

[0085] Furthermore, as Figure 5 , Figure 6 shown, the fixing portion 41 is simultaneously provided on both the first flange 22 and the second flange 14. The first connection area 51 is located on the side of the fixing portion 41 adjacent to the main body plate 21. A second connection area 52 formed by a welding pool is provided between the first flange 22 and the second flange 14, and the second connection area 52 is located on the side of the fixing portion 41 away from the main body plate 21.

[0086] Thus, the first flange 22 and the second flange 14 are connected at different positions simultaneously through the first connection area 51 and the second connection area 52, which can improve the connection reliability and stability between the first flange 22 and the second flange 14.

[0087] At the same time, the first connection area 51 and the second connection area 52 are respectively located on both sides of the fixing portion 41, which can improve the structural strength of the flange 40 at the fixing portion 41, thereby enhancing the stability and reliability of the battery housing 100 when it is fixed through the fixing portion 41.

[0088] In some embodiments, as Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the fixing part 41 includes a plurality of fixing holes which penetrate along the thickness direction of the flange 40, and the plurality of fixing holes are arranged at intervals in the circumferential direction of the housing body 10. Thus, the fixing holes can be used for fixing the battery housing 100, enabling the battery housing 100 to be fixed in the circumferential direction of the housing body 10 through the fixing holes, improving the stability of the fixing of the battery housing 100. And it is convenient to achieve detachable connection at the fixing holes, thereby simplifying the replacement and disassembly operation of the battery 1000.

[0089] Meanwhile, when the battery housing 100 is fixed at the fixing holes, it can simultaneously fix the first flange 22 and the second flange 14, further improving the stability of the connection between the first flange 22 and the second flange 14.

[0090] Furthermore, as Figure 1 , Figure 2 shown, the flange 40 includes a plurality of lugs 42 which are arranged at intervals in the circumferential direction of the housing body 10, and the fixing holes are provided in the lugs 42. Thus, an empty space can be formed between adjacent fixing holes in the circumferential direction of the housing body 10, which can reduce or avoid the installation of the battery housing 100 being blocked by the flange 40, thereby improving the space requirements for fixing and installing the battery housing 100 through the fixing part 41, enhancing the versatility of the battery housing 100, and reducing the installation difficulty.

[0091] In some embodiments, as Figure 4 , Figure 7 and Figure 8 shown, the flange 40 is located at the edge of the first cover plate 20. The edge of the second cover plate 30 coincides with the edge of the housing body 10, and a third connection area 53 formed by a welding molten pool is provided therebetween, and the third connection area 53 surrounds the second opening 13.

[0092] Thus, the second cover plate 30 and the housing body 10 are connected through the third connection area 53, and the third connection area 53 surrounds the second opening 13, which can achieve a sealed connection between the second cover plate 30 and the housing body 10 around the second opening 13, thereby improving the sealing performance of the accommodation cavity 11.

[0093] In this application, the method of forming the welding molten pool between the second cover plate 30 and the housing body 10 is not limited, and the method of forming the welding molten pool can be selected according to the materials of the second cover plate 30 and the housing body 10. For example, by ultrasonic welding, hot melting or laser welding, etc. Among them, when the second cover plate 30 and the housing body 10 are plastic parts, hot melting can be used to form the welding molten pool.

[0094] It should be noted that in some other embodiments (not shown in the figures), it is also possible that the flange 40 is located at the edge of the second cover plate 30, the edge of the first cover plate 20 coincides with the edge of the housing body 10, and a third connection area 53 formed by a welding molten pool is provided therebetween. The third connection area 53 is disposed around the first opening 12.

[0095] Furthermore, the third connection area 53 extends from the surface of the second cover plate 30 away from the first cover plate 20 into the housing body 10. Alternatively, the third connection area 53 extends from the corner of the edge of the second cover plate 30 into the housing body 10.

[0096] Thereby, it can be ensured that the third connection area 53 extends to both the second cover plate 30 and the housing body 10 at the same time, while reducing the difficulty of forming the third connection area 53, and improving the firmness and reliability of the connection between the second cover plate 30 and the housing body 10.

[0097] It should be noted that the position of the third connection area 53 on the second cover plate 30 can be set according to the position of the edge of the second cover plate 30 relative to the edge of the housing body 10. For example, in Figure 7 the example, the edge of the second cover plate 30 coincides completely with the edge of the housing body 10. At this time, the third connection area 53 extends from the surface of the second cover plate 30 away from the first cover plate 20 into the housing body 10. Another example is in Figure 8 the example, the edge of the second cover plate 30 overlaps a part of the edge of the housing body 10 in the thickness direction. At this time, the third connection area 53 extends from the corner of the edge of the second cover plate 30 into the housing body 10.

[0098] In some embodiments, a pressure relief valve 60 is provided on at least one of the first cover plate 20 and the second cover plate 30. In Figure 9 the example, it shows that a pressure relief valve 60 is provided on the first cover plate 20.

[0099] Thereby, when the air pressure in the accommodation cavity 11 is too high, a directional explosion can occur at the pressure relief valve 60 and the air pressure can be released, thereby reducing or avoiding the risk of explosion of the battery housing 100 and improving the safety of the battery 1000.

[0100] In this application, the formation method of the pressure relief valve 60 is not limited. For example, the pressure relief valve 60 is formed on the first cover plate 20 or the second cover plate 30 by hot melting, extrusion or laser engraving.

[0101] In some embodiments, the housing body 10 is a stamping part or an extrusion part, so as to facilitate the manufacture of the housing body 10 and reduce the manufacturing cost of the housing body 10.

[0102] Such as Figure 10As shown in the figure, the battery 1000 according to an embodiment of the present invention includes the battery housing 100, the battery cell 200, and the conductive terminal 300 of the above embodiment. The battery cell 200 is disposed in the accommodation cavity 11, and the conductive terminal 300 passes through the housing body 10 and is connected to the tab 210 of the battery cell 200.

[0103] For the battery 1000 of the present application, by adopting the battery housing 100 of the above embodiment, the accommodation cavity 11 can have a larger space at the corners, thereby improving the consistency between the shape of the accommodation cavity 11 and the shape of the battery cell 200, enabling the corners of the battery cell 200 to be accommodated at the corners of the accommodation cavity 11, improving the space utilization rate in the accommodation cavity 11, and being beneficial to the miniaturization of the overall battery 1000 or the reduction of the thickness of the battery 1000.

[0104] In some embodiments, the battery housing 100 is a conductive member. One tab 210 of the battery cell 200 is connected to the battery housing 100, and the other tab 210 is connected to the conductive terminal 300. An insulating member 310 is interposed between the conductive terminal 300 and the battery housing 100.

[0105] Thus, the insulating member 310 can space apart the conductive terminal 300 and the battery housing 100, reduce or avoid the risk of short circuit between the conductive terminal 300 and the battery housing 100, and can reduce the number of conductive terminals 300 provided, saving the space for arranging the conductive terminal 300, which is beneficial to reducing the volume of the battery 1000.

[0106] In the present application, the formation method of the insulating member 310 is not limited. For example, the insulating member 310 can be an independent device and interposed between the conductive terminal 300 and the battery housing 100. Another example is that the insulating member 310 is an injection molded part, which is directly injection molded between the conductive terminal 300 and the battery housing 100.

[0107] The battery pack according to an embodiment of the present invention includes at least two batteries of the above embodiment.

[0108] For the battery pack of the present application, by adopting the battery 1000 of the above embodiment, the space utilization rate of the accommodation cavity 11 in the battery 1000 can be improved, which is beneficial to the miniaturization of the overall battery 1000 or the reduction of the thickness of the battery 1000, and can reduce the volume of the battery pack.

[0109] The electrical device according to an embodiment of the present invention includes the battery 1000 of the above embodiment or the battery pack of the above embodiment.

[0110] For the electrical device of the present application, by adopting the battery 1000 of the above embodiment, the space utilization rate of the accommodation cavity 11 in the battery 1000 can be improved, which is beneficial to the miniaturization of the overall battery 1000 or the reduction of the thickness of the battery 1000, and can reduce the occupation of the space of the electrical device by the battery 1000.

[0111] In this application, the type of the electrical equipment is not limited. For example, the electrical equipment is a vehicle.

[0112] The other components and operations of the battery housing 100, the battery 1000, the battery pack and the electrical equipment according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.

[0113] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0114] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery housing, characterized in that: include: A shell body, the shell body is annular and surrounds a receiving cavity, and the receiving cavity has a first opening and a second opening opposite to each other; a first cover plate, the first cover plate being arranged to cover the first opening; a second cover plate, the second cover plate being arranged to cover the second opening; An edge of at least one of the shell body, the first cover plate and the second cover plate forms a flange, and the flange is located outside the accommodating cavity.

2. The battery housing according to claim 1, characterized in that: The shell body comprises an outer arc segment, the outer arc segment is bent toward a side away from the accommodating cavity, the outer arc segment surrounds the first opening or the second opening, and the flange is connected to the outer arc segment; Wherein, an avoidance gap is formed between the outer arc segment and the first cover plate or the second cover plate.

3. The battery housing according to claim 1, characterized in that: At least one of the first cover plate and the second cover plate comprises: a main body plate and a first flange located at an edge of the main body plate; The shell body comprises a main shell ring and a second flange located at the edge of the main shell ring, wherein the second flange is arranged corresponding to the first flange; The main body plate cover is disposed on one side of the main shell ring, and the first flange and the second flange are stacked and connected to form the flange.

4. The battery case according to claim 3, characterized in that: The first flange and the main body plate are located on the same plane, and the second flange and the main shell ring are transitionally connected via an outer arc segment; Wherein, an avoidance gap is formed between the outer arc segment and the main body plate or the first flange, and the avoidance gap is connected to the accommodating cavity.

5. The battery housing according to claim 3, characterized in that: A first connection area formed by a welding pool is provided between the first flange and the second flange, and the first connection area is arranged around the main body plate.

6. The battery casing according to claim 5, characterized in that: The thickness of the first flange is greater than the thickness of the second flange, and the first connecting area extends from a surface of the second flange away from the first flange to an interior of the first flange; Alternatively, the thickness of the first flange is smaller than the thickness of the second flange, and the first connecting area extends from a surface of the first flange away from the second flange to an interior of the second flange.

7. The battery case according to claim 3, characterized in that: The first flange and the second flange are completely fitted together.

8. The battery casing according to claim 5, characterized in that: The flange is provided with a fixing portion for fixing.

9. The battery casing according to claim 8, characterized in that: The fixing portion is provided on the first flange and the second flange; The first connection area is located on a side of the fixing portion adjacent to the main body plate; A second connection area formed by a welding molten pool is provided between the first flange and the second flange, and the second connection area is located on a side of the fixing portion away from the main body plate.

10. The battery casing according to claim 8, characterized in that: The fixing portion includes a plurality of fixing holes, and the fixing holes are arranged through the flange in a thickness direction, and the plurality of fixing holes are arranged at intervals along the circumference of the shell body.

11. The battery housing according to claim 10, characterized in that: The flange includes a plurality of lugs, the lugs are arranged at intervals along the circumference of the shell body, and the fixing holes are arranged in the lugs.

12. The battery housing according to any one of claims 1 to 11, characterized in that: The flange is located at the edge of the first cover plate; The edge of the second cover plate overlaps with the edge of the shell body, and a third connection area formed by a welding pool is provided between the two, and the third connection area is arranged around the second opening.

13. The battery casing according to claim 12, characterized in that: The third connection area extends from a surface of the second cover plate away from the first cover plate to the interior of the shell body; Alternatively, the third connection area extends from a corner of an edge of the second cover plate to an interior of the shell body.

14. The battery housing according to any one of claims 1 to 11, characterized in that: At least one of the first cover plate and the second cover plate is provided with a pressure relief valve.

15. The battery housing according to any one of claims 1 to 11, characterized in that: The shell body is a stamped part or an extruded part.

16. A battery, characterized in that: include: The battery housing according to any one of claims 1 to 15; A battery cell, wherein the battery cell is disposed in the accommodating cavity; A conductive terminal is provided through the shell body and connected to the tab of the battery cell.

17. The battery according to claim 16, characterized in that The battery case is a conductive member, one tab of the battery cell is connected to the battery case, and the other tab is connected to the conductive terminal, and an insulating member is sandwiched between the conductive terminal and the battery case.

18. A battery pack, characterized in that: Comprising at least two batteries as claimed in any one of claims 16-17.

19. An electrical equipment, characterized in that: Includes the battery as described in any one of claims 16-17, or includes the battery pack as described in claim 18.

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