Shell assembly, battery, battery pack and electric equipment

Abstract

The utility model discloses a shell assembly, a battery, a battery pack and electric equipment, and relates to the technical field of batteries, and the shell assembly comprises a battery shell and a conductive terminal assembly. A containing cavity is defined by the battery shell, and a mounting hole communicated with the containing cavity is formed in the battery shell. And the conductive terminal assembly is inserted into the mounting hole in a matching manner, and is connected to the battery shell along the edge of the mounting hole in a sealing manner. According to the shell assembly, the space utilization rate of the containing cavity can be improved, and the assembling difficulty is reduced.

Description

Technical Field

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

[0002] In the prior art, the housing assembly of a battery is composed of a conductive column, inner and outer insulating parts and a battery housing. The conductive column sequentially passes through the outer insulating part, the battery housing and the inner insulating part, and the conductive column is provided with flanges at both ends and simultaneously presses the inner and outer insulating parts to realize its sealed connection on the battery housing. In this structure, the flanges at the end of the conductive column are likely to occupy the space inside the battery housing, affecting the utilization rate of the space inside the battery housing. 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 housing assembly, and the housing assembly can improve the space utilization rate of the accommodation cavity and reduce the assembly difficulty.

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

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

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

[0007] According to the housing assembly of the embodiment of the utility model, it includes: a battery housing which encloses to form an accommodation cavity, and an installation hole communicating with the accommodation cavity is arranged on the battery housing; a conductive terminal assembly which is inserted into the installation hole, and the conductive terminal assembly is hermetically connected to the battery housing along the edge of the installation hole.

[0008] According to the housing assembly of the embodiment of the utility model, the conductive terminal assembly is hermetically connected to the edge of the annular installation hole of the battery housing, and there is no need to arrange flanges on both sides inside and outside the housing like in the prior art to press and seal, which can reduce or avoid the occupation of the space inside the accommodation cavity by the flanges, improve the space utilization rate of the accommodation cavity, and is beneficial to reducing the volume of the housing assembly. At the same time, the installation method of the conductive terminal assembly on the battery housing is relatively simple, which can simplify the installation operation of the conductive terminal assembly on the battery housing.

[0009] In some embodiments, the conductive terminal assembly includes: a conductive terminal which passes through the installation hole to connect with the battery cell; the battery housing is a conductive part, and the conductive terminal is welded to the battery housing along the edge of the installation hole.

[0010] In some other embodiments, the conductive terminal assembly includes: a conductive terminal that passes through the mounting hole to connect to the battery cell; a sheath that is sleeved outside the conductive terminal, and the sheath is hermetically connected to the battery housing along the edge of the mounting hole; and an insulating seal that is hermetically connected between the conductive terminal and the sheath.

[0011] Further, the battery housing is a conductive member, the sheath is a conductive member, and the sheath is welded to the battery housing along the edge of the mounting hole.

[0012] Further, the insulating seal is an injection molded part, and the insulating seal integrally connects the conductive terminal and the sheath by injection molding to achieve a hermetic connection.

[0013] In some embodiments, the sheath includes an integrally formed sleeve and a flange. The sleeve is sleeved outside the conductive terminal, the flange is located at one end of the sleeve away from the accommodating cavity, the flange surrounds the mounting hole and abuts against the battery housing, and the flange is hermetically connected to the battery housing along the edge of the mounting hole.

[0014] Further, the conductive terminal is in a plate shape.

[0015] In some embodiments, there are two conductive terminal assemblies, which are a positive terminal and a negative terminal respectively. There are two mounting holes provided on the battery housing; the battery housing is a conductive member, and both of the two conductive terminal assemblies include: a conductive terminal, each of the two conductive terminals passes through one of the mounting holes, one conductive terminal is connected to the positive electrode tab of the battery cell, and the other conductive terminal is connected to the negative electrode tab of the battery cell; a sheath, each of the conductive terminals is sleeved with a sheath, and the sheath is welded to the battery housing along the edge of the mounting hole; an insulating seal, and the insulating seal is hermetically connected between each conductive terminal and the sheath.

[0016] In some other embodiments, there are two conductive terminal assemblies, which are a positive terminal and a negative terminal respectively, and two such mounting holes are provided on the battery housing; the battery housing is a conductive member; one of the two conductive terminal assemblies includes a first conductive terminal, the first conductive terminal passes through one of the mounting holes and is welded to the battery housing; the other conductive terminal assembly includes: a second conductive terminal, the second conductive terminal passes through the other mounting hole; a sheath, the sheath is sleeved outside the second conductive terminal, and the sheath is welded to the battery housing along the edge of the mounting hole; an insulating seal, the insulating seal is sealingly connected between the second conductive terminal and the sheath; one of the first conductive terminal and the second conductive terminal is used to connect the positive electrode tab of the battery cell, and the other is used to connect the negative electrode tab of the battery cell.

[0017] In some embodiments, the battery housing includes: a housing side wall, the housing side wall surrounds to form the accommodating cavity, and the accommodating 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.

[0018] Further, the mounting hole is provided on the housing side wall.

[0019] The battery according to an embodiment of the present invention includes: the housing assembly described in the above embodiment; a battery cell, the battery cell is disposed in the accommodating cavity and is electrically connected to the conductive terminal assembly.

[0020] The battery according to an embodiment of the present invention, by adopting the housing assembly of the above embodiment, the conductive terminal assembly is sealingly connected to the battery housing at the edge of the mounting hole, which can reduce or avoid the occupation of the space in the accommodating cavity by its edge, can improve the utilization rate of the space in the accommodating cavity, and is beneficial to reducing the volume of the housing assembly. At the same time, the installation method of the conductive terminal assembly on the battery housing is relatively simple, which can simplify the installation operation of the conductive terminal assembly on the battery housing and reduce the assembly difficulty of the battery.

[0021] The battery pack according to an embodiment of the present invention includes at least two batteries of the above embodiment.

[0022] The battery pack according to an embodiment of the present invention, by adopting the battery of the above embodiment, the conductive terminal assembly is sealingly connected to the battery housing at the edge of the mounting hole, which can reduce or avoid the occupation of the space in the accommodating cavity by its edge, can improve the utilization rate of the space in the accommodating cavity, and is beneficial to reducing the volume of the housing assembly. At the same time, the installation method of the conductive terminal assembly on the battery housing is relatively simple, which can simplify the installation operation of the conductive terminal assembly on the battery housing and reduce the assembly difficulty of the battery.

[0023] The electrical device according to an embodiment of the present utility model includes the battery of the above embodiment or includes the battery pack of the above embodiment.

[0024] By adopting the battery or the battery pack of the above embodiment, the electrical device according to an embodiment of the present utility model can reduce the volume of the battery and at the same time reduce the assembly difficulty of the battery.

[0025] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0027] Figure 1 is an exploded view of a battery according to an embodiment of the present utility model;

[0028] Figure 2 is a cross-sectional view of a battery according to an embodiment of the present utility model at the conductive terminal assembly;

[0029] Figure 3 is Figure 2 the enlarged view shown at A in

[0030] Figure 4 is a cross-sectional view of a battery according to another embodiment of the present utility model at the conductive terminal assembly;

[0031] Figure 5 is Figure 4 the enlarged view shown at B in

[0032] Figure 6 is a three-dimensional view of a battery according to an embodiment of the present utility model;

[0033] Figure 7 is a three-dimensional view of a battery according to another embodiment of the present utility model;

[0034] Figure 8 is a schematic structural diagram of a vehicle according to an embodiment of the present utility model.

[0035] Reference Signs:

[0036] Battery 100,

[0037] accommodating cavity 10, mounting hole 11, housing side wall 12, first cover plate 13, second cover plate 14, first opening 15, second opening 16, explosion-proof valve 17,

[0038] Conductive terminal assembly 20, conductive terminal 21, sheath 22, sleeve 221, flange 222, insulating seal 23, welding point 24,

[0039] Cell 30,

[0040] Insulating spacer 40,

[0041] Vehicle body 200, vehicle 1000. Detailed implementation manners

[0042] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying 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 by referring to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying 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 limiting 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 specified, the meaning of "a plurality" is two or more.

[0044] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" 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 internal communication of 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.

[0045] The housing assembly, battery 100, battery pack and electrical equipment according to the embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0046] As Figure 1As shown in the figure, the housing assembly according to an embodiment of the present utility model includes: a battery housing and a conductive terminal assembly 20. The battery housing encloses to form a receiving cavity 10, and the battery housing is provided with a mounting hole 11 communicating with the receiving cavity 10. The conductive terminal assembly 20 is inserted into the mounting hole 11, and the conductive terminal assembly 20 is sealingly connected to the battery housing along the edge of the mounting hole 11, so that the conductive terminal assembly 20 can seal the mounting hole 11 to reduce or avoid liquid or impurities from entering the receiving cavity 10 through the mounting hole 11, ensuring the sealing performance of the receiving cavity 10 and the reliability of the housing assembly.

[0047] It should be noted that the conductive terminal assembly 20 is inserted into the mounting hole 11, that is, the contact connection position between the conductive terminal assembly 20 and the mounting hole 11 avoids the end of the conductive terminal assembly 20. That is to say, there is no need to provide a connection structure at the end of the conductive terminal assembly 20, which can reduce or avoid the occupation of the space inside the receiving cavity 10 by the end of the conductive terminal assembly 20 located inside the receiving cavity 10. Since the conductive terminal assembly 20 is directly sealingly connected to the battery housing along the edge of the mounting hole 11, there is no need to provide flanges on both sides inside and outside the housing on the conductive terminal assembly 20 for extrusion, reducing the occupation of the internal space of the receiving cavity 10 by the flanges.

[0048] Thus, the conductive terminal assembly 20 is sealingly connected to the battery housing at the edge of the mounting hole 11, which can reduce or avoid the occupation of the space inside the receiving cavity 10 by its edge, improve the utilization rate of the space inside the receiving cavity 10, and is beneficial to reducing the volume of the housing assembly. At the same time, the installation method of the conductive terminal assembly 20 on the battery housing is relatively simple, which can simplify the installation operation of the conductive terminal assembly 20 on the battery housing.

[0049] In this application, the method of sealingly connecting the conductive terminal assembly 20 to the battery housing is not limited. For example, the battery housing is usually a metal housing, and the conductive terminal assembly 20 can be directly welded to the battery housing along the edge of the mounting hole 11 to achieve sealing. Since the conductive terminal assembly 20 is charged, the battery housing becomes a charged housing. Another example is that the battery housing is a non-charged housing, and the conductive terminal assembly 20 can be sealingly connected to the battery housing along the edge of the mounting hole 11 directly through a sealant.

[0050] In some embodiments, the conductive terminal assembly 20 includes: a conductive terminal 21, and the conductive terminal 21 passes through the mounting hole 11 to connect to the battery cell. The battery housing is a conductive member, and the conductive terminal 21 is welded to the battery housing along the edge of the mounting hole 11. In this case, the structure of the conductive terminal assembly 20 is simple, and at this time the battery housing becomes a charged housing.

[0051] In other embodiments, such as Figure 1As shown, the conductive terminal assembly 20 includes: a conductive terminal 21 and a sheath 22. The conductive terminal 21 is inserted through the mounting hole 11 to connect to the battery cell, and the sheath 22 is sleeved outside the conductive terminal 21. The sheath 22 is hermetically connected to the battery housing along the edge of the mounting hole 11.

[0052] It can be understood that the conductive terminal 21 is inserted through the sheath 22, that is, both ends of the conductive terminal 21 are located inside and outside the accommodating cavity 10 respectively, while the sheath 22 is sleeved outside the conductive terminal 21 and connected to the mounting hole 11. That is to say, the sheath 22 is located between both ends of the conductive terminal 21. At the same time, the sheath 22 forms the edge of the conductive terminal 21. The conductive terminal assembly 20 is hermetically connected to the battery housing through the sheath 22 at the edge of the mounting hole 11, and one end of the conductive terminal 21 located inside the accommodating cavity 10 is used to connect to the battery cell.

[0053] Thus, the conductive terminal assembly 20 is connected to the battery housing through the sheath 22. The sheath 22 can space the conductive terminal 21 from the battery housing to protect the conductive terminal 21, reducing or avoiding damage or deformation of the conductive terminal 21 caused by the installation operation of connecting the conductive terminal assembly 20 to the battery housing, and ensuring the stable electrical conductivity of the conductive terminal 21. And the position of the sheath 22 corresponds to that of the mounting hole 11, which can limit the position of the conductive terminal 21 inserted through the mounting hole 11, improve the stability of the setting position of the conductive terminal 21, and improve the electrical connection reliability between the conductive terminal 21 and the battery cell 30 inside the accommodating cavity 10.

[0054] In this application, the material of the sheath 22 is not limited. For example, the sheath 22 is a metal sleeve, or the sheath 22 is a plastic sleeve formed by injection molding on the outer peripheral surface of the conductive terminal 21.

[0055] Furthermore, as Figures 2 - 5 shown, the battery housing is a conductive part, and the sheath 22 is a conductive part. The sheath 22 is welded to the battery housing along the edge of the mounting hole 11. The connection formed by welding has high reliability and is not easily disconnected under impact.

[0056] When there is a sheath 22, the sheath 22 can be in direct contact with the battery housing to conduct electricity, making the battery housing a live housing. Or, the conductive terminal assembly 20 further includes: an insulating seal 23, and the insulating seal 23 is hermetically connected between the conductive terminal 21 and the sheath 22. At this time, the battery housing becomes a non-live housing. After providing the two solutions, the live housing design and the non-live housing design can be flexibly selected according to requirements.

[0057] Preferably, as Figure 1As shown in the figure, when the battery housing is a non - charged housing, an insulating spacer 40 is provided on the side of the battery housing outside the accommodation cavity 10. The conductive terminal assembly 20 passes through the insulating spacer 40 and the mounting hole 11 at the same time, which can further reduce the risk of electrical contact between the conductive terminal 21 and the battery housing.

[0058] In this application, the material and thickness of the battery housing are not limited. For example, the battery housing is a ferro - alloy part or an aluminum - alloy part.

[0059] Preferably, the thickness of the battery housing is 20 - 500 um.

[0060] Preferably, the projection of the sheath 22 on the outer peripheral surface of the conductive terminal 21 is within the projection range of the insulating seal 23 on the outer peripheral surface of the conductive terminal 21, which can improve the reliability of the insulating function of the insulating seal 23 between the conductive terminal 21 and the sheath 22 and further reduce the short - circuit risk.

[0061] In some specific embodiments, the conductive terminal assembly 20 includes a conductive terminal 21 and a sheath 22, and both the conductive terminal 21 and the sheath 22 are metal parts. The conductive terminal 21 and the sheath 22 can be integrally injection - molded parts, so that the two can be directly sealed and connected during injection molding. Or the conductive terminal 21 and the sheath 22 are independently processed respectively, and are fixedly connected by welding (such as laser welding) after assembly.

[0062] In some other specific embodiments, the conductive terminal assembly 20 includes a conductive terminal 21, a sheath 22 and an insulating seal 23, and the insulating seal 23 is sealingly connected between the conductive terminal 21 and the sheath 22. At this time, the insulating seal 23 can be an injection - molded part. The insulating seal 23 seals and connects the conductive terminal 21 and the sheath 22 with the insulating seal 23 by injection molding to become an integral body. That is, before injection molding of the insulating seal 23, the conductive terminal 21 and the sheath 22 are pre - placed in the injection cavity, so that the injection melt connects the conductive terminal 21 and the sheath 22 into an integral body when solidifying.

[0063] Even more, the conductive terminal assembly 20 can be a two - stage injection - molded part, that is, in the same injection cavity, the conductive terminal 21 and the sheath 22 can be pre - injection - molded first, and then the insulating seal 23 is injection - molded after the conductive terminal 21 and the sheath 22 are solidified.

[0064] After such a setting, the conductive terminal 21, the sheath 22 and the insulating seal 23 are tightly connected, not easy to fall off, and it saves processes such as welding, and has good sealing performance, improving the overall structural stability of the conductive terminal assembly 20.

[0065] Of course, this application does not exclude the solution that the battery housing is an insulating part. At this time, the insulating seal 23 may not be provided between the sheath 22 and the conductive terminal 21, and the sheath 22 and the battery housing can be connected by a sealant.

[0066] In some embodiments, such as Figure 6 shown, when the housing assembly includes a plurality of conductive terminal assemblies 20, the plurality of conductive terminal assemblies 20 can be arranged on the same side of the battery housing, and the plurality of conductive terminal assemblies 20 are arranged along the width direction of the battery housing. Or, as Figure 7 shown, the plurality of conductive terminal assemblies 20 can be arranged on opposite sides of the battery housing.

[0067] In some embodiments, such as Figure 4 、 Figure 5 shown, the sheath 22 includes an integrally formed sleeve 221 and a flange 222. The sleeve 221 is sleeved outside the conductive terminal 21. The flange 222 is located at one end of the sleeve 221 away from the accommodating cavity 10. The flange 222 surrounds the mounting hole 11 and abuts against the battery housing. The flange 222 is hermetically connected to the battery housing along the edge of the mounting hole 11.

[0068] It can be understood that when the conductive terminal assembly 20 passes through the mounting hole 11, the conductive terminal assembly 20 is inserted into the accommodating cavity 10 from the mounting hole 11. When the conductive terminal assembly 20 is connected to the battery housing, the flange 222 abuts against the side of the battery housing away from the accommodating cavity 10.

[0069] Thus, by the flange 222 abutting against the battery housing, the position of the conductive terminal assembly 20 in the mounting hole 11 can be limited, the accuracy of the setting position of the conductive terminal assembly 20 in the battery housing can be improved, and the installation difficulty of the conductive terminal assembly 20 in the battery housing can be reduced.

[0070] At the same time, there is likely to be a gap between the sleeve 221 and the inner wall of the mounting hole 11. The flange 222 can block the sleeve 221 and the mounting hole 11, further improving the sealing performance at the mounting hole 11. And the conductive terminal assembly 20 is connected to the battery housing at the flange 222, so that the connection position of the conductive terminal assembly 20 and the battery housing is far from the conductive terminal 21, thereby reducing or avoiding damage to the conductive terminal 21 caused by the connection between the flange 222 and the battery housing. Especially when the flange 222 and the battery housing are welded, damage to the conductive terminal 21 can be reduced or avoided.

[0071] Furthermore, when both the sheath 22 and the battery housing are conductive parts, the flange 222 is welded to the battery housing. In the Figure 5 example, for the convenience of the welding connection operation between the flange 222 and the battery housing, the welding point 24 is located on the flange 222, and penetration welding is performed at the welding point 24 to achieve the welding connection between the flange 222 and the housing. The welding point 24 is far from the conductive terminal 21 to avoid or reduce damage to the conductive terminal 21 caused by the welding operation.

[0072] In some other embodiments, such asFigure 2 , Figure 3 As shown in Figure 3 , the sheath 22 includes a sleeve 221, the sleeve 221 is sleeved outside the conductive terminal 21, both the sleeve 221 and the battery housing are conductive members, and the sleeve 221 and the battery housing are welded together. In Figure 3 the example of Figure 3 , the sleeve 221 and the battery housing are butt-welded, and the welding point 24 is located on the side of the sleeve 221 away from the accommodation cavity 10.

[0073] Preferably, as Figure 3 shown in Figure 3 , on the side away from the accommodation cavity 10, one end of the sleeve 221 is flush with the surface of the battery housing.

[0074] In some embodiments, as Figure 1 , Figure 6 and Figure 7 shown in Figure 7 , the conductive terminal 21 is in a plate shape.

[0075] Thus, the plate-shaped conductive terminal 21 has a smaller size in the thickness direction, and on the basis that no connection structure needs to be provided at the end of the conductive terminal assembly 20, the accommodation cavity 10 can have a smaller size in the thickness direction, which is beneficial to reducing the size of the overall battery housing in the thickness direction.

[0076] At the same time, by increasing the size of the conductive terminal 21 in the width direction, the current-carrying capacity of the conductive terminal 21 can be enhanced, so that the current-carrying capacity of the conductive terminal 21 can be increased without increasing the thickness dimension of the battery housing, and the performance of the battery 100 can be improved.

[0077] Preferably, the size of the conductive terminal 21 in the thickness direction is less than or equal to 0.05 mm, and the size in the width direction is greater than 2 mm.

[0078] In some embodiments, the battery housing is a conductive member, there are two conductive terminal assemblies 20 which are a positive terminal and a negative terminal respectively, there are two mounting holes 11 on the battery housing, and the positive terminal and the negative terminal are respectively inserted into one mounting hole 11.

[0079] Both of the two conductive terminal assemblies 20 include: a conductive terminal 21, a sheath 22, and an insulating seal 23. Specifically, each of the two conductive terminals 21 passes through an installation hole 11, and each conductive terminal 21 is sleeved with a sheath 22. The sheath 22 is welded to the battery housing along the edge of the installation hole 11. An insulating seal 23 is hermetically connected between each conductive terminal 21 and the sheath 22. One conductive terminal 21 is connected to the positive electrode tab of the battery cell, and the corresponding conductive terminal assembly 20 of this conductive terminal 21 is the positive terminal. The other conductive terminal 21 is connected to the negative electrode tab of the battery cell, and the corresponding conductive terminal assembly 20 of this conductive terminal 21 is the negative terminal. In this embodiment, the housing assembly can lead out the positive and negative electrodes, and the battery housing of the housing assembly itself is not charged, but both the positive and negative terminals can be hermetically connected to the battery housing, and it can also reduce the occupation of the internal space of the battery housing, and the space utilization rate of the accommodation cavity is high.

[0080] In some other embodiments, the battery housing is a conductive member. There are two conductive terminal assemblies 20 which are respectively the positive terminal and the negative terminal. There are two installation holes 11 provided on the battery housing, and the positive terminal and the negative terminal are respectively passed through one installation hole 11.

[0081] One of the two conductive terminal assemblies 20 includes a first conductive terminal. The first conductive terminal 21 passes through an installation hole 11 and is welded to the battery housing.

[0082] The other conductive terminal assembly 20 includes: a second conductive terminal, a sheath 22, and an insulating seal 23. The second conductive terminal passes through the other installation hole 11, the sheath 22 is sleeved outside the second conductive terminal, the sheath 22 is welded to the battery housing along the edge of the installation hole 11, and the insulating seal 23 is hermetically connected between the second conductive terminal and the sheath 22.

[0083] One of the first conductive terminal and the second conductive terminal is used to connect the positive electrode tab of the battery cell, and the corresponding conductive terminal assembly 20 is the positive terminal. The other of the first conductive terminal and the second conductive terminal is used to connect the negative electrode tab of the battery cell, and the corresponding conductive terminal assembly 20 is the negative terminal.

[0084] That is to say, the positive terminal can be directly welded to the battery housing to make the battery housing positively charged, and the negative terminal is insulated from the battery housing. Or, the negative terminal can be directly welded to the battery housing to make the battery housing negatively charged, and the positive terminal is insulated from the battery housing.

[0085] In this embodiment, the housing assembly can also lead out the positive and negative electrodes, and the battery housing of the housing assembly itself is charged, but both the positive and negative terminals can be hermetically connected to the battery housing, and it can also reduce the occupation of the internal space of the battery housing, and the space utilization rate of the accommodation cavity is high.

[0086] In some embodiments, such asFigure 1 As shown, the battery housing includes: a housing side wall 12, a first cover plate 13, and a second cover plate 14. The housing side wall 12 surrounds to form a receiving cavity 10, and the receiving cavity 10 has opposite first opening 15 and second opening 16. The first cover plate 13 covers the first opening 15. The second cover plate 14 covers the second opening 16.

[0087] It can be understood that when the first cover plate 13, the second cover plate 14, and the housing side wall 12 are integrally formed structures, a transition surface needs to be provided at the edge connection between the housing side wall 12 and the first cover plate 13 or the second cover plate 14, and the transition surface is usually a curved surface, resulting in the space in the receiving cavity 10 corresponding to the transition surface not being fully utilized, reducing the space utilization rate in the receiving cavity 10.

[0088] Therefore, the first cover plate 13 and the second cover plate 14 are respectively covered on the housing side wall 12, so that the housing side wall 12 is directly connected to the first cover plate 13 or the second cover plate 14, which can reduce or avoid the influence of the transition surface existing at the edge between the housing side wall 12 and the first cover plate 13 or the second cover plate 14 on the space of the receiving cavity 10. Thus, the space utilization rate in the receiving cavity 10 can be improved, and the size of the housing assembly in the thickness direction can be further reduced.

[0089] In this application, the connection manner between the first cover plate 13, the second cover plate 14 and the housing side wall 12 is not limited. For example, it can be welding or bolt connection.

[0090] In this application, the shapes of the first cover plate 13, the second cover plate 14 and the housing side wall 12 are not restricted, and the shapes of the first cover plate 13 and the second cover plate 14 are adapted to the shape of the housing side wall 12. For example, the frame structures of the first cover plate 13, the second cover plate 14 and the housing side wall 12 can be rectangular, circular, elliptical, rhombic or irregular special-shaped structures such as L-shaped.

[0091] It should be noted that in the process of assembling the battery 100, first, the first cover plate 13 or the second cover plate 14 is hermetically connected to the housing side wall 12, then the conductive terminal assembly 20 is inserted and fitted into the mounting hole 11, the battery cell 30 is electrically connected to one end of the conductive terminal assembly 20 located in the receiving cavity 10, and the battery cell 30 is placed in the receiving cavity 10. Finally, the other cover plate is hermetically connected to the housing side wall 12. Thus, the battery 100 is assembled.

[0092] Furthermore, the mounting hole 11 is provided on the housing side wall 12.

[0093] It can be understood that to facilitate the installation of the battery cell 30, the areas of the first opening 15 and the second opening 16 need to be set larger, that is to say, the first cover plate 13 and the second cover plate 14 are located on both sides of the battery housing in the thickness direction.

[0094] Accordingly, the mounting holes 11 are provided on the side wall 12 of the housing, so that the orientation of the conductive terminal assembly 20 is offset from the thickness direction of the housing assembly, thereby reducing or avoiding an increase in the thickness dimension of the housing assembly in the thickness direction of the conductive terminal assembly 20. This is beneficial to reducing the thickness dimension of the housing assembly.

[0095] In some embodiments, as Figure 1 shown, an explosion-proof valve 17 is provided on the battery housing. Accordingly, when the air pressure in the accommodation chamber 10 is too high, the explosion-proof valve 17 can rupture and discharge the gas, so as to avoid the explosion of the battery 100 and improve the safety of the battery 100.

[0096] Preferably, the thickness of the battery housing at the explosion-proof valve 17 is less than the thickness of other parts.

[0097] Preferably, as Figure 1 shown, when the battery housing includes a side wall 12 of the housing, a first cover plate 13 and a second cover plate 14, the explosion-proof valve 17 is provided on the first cover plate 13 or the second cover plate 14, and the conductive terminal assembly 20 is provided on the side wall 12 of the housing. Thus, the setting distance between the conductive terminal assembly 20 and the explosion-proof valve 17 is relatively far, thereby reducing or avoiding the mutual influence on the functions of the conductive terminal assembly 20 and the explosion-proof valve 17.

[0098] As Figure 1 shown, the battery 100 according to an embodiment of the present invention includes: the battery 100 of the above embodiment and an electric core 30, and the electric core 30 is disposed in the accommodation chamber 10 and is electrically connected to the conductive terminal assembly 20.

[0099] For the battery 100 of the present application, by adopting the housing assembly of the above embodiment, the conductive terminal assembly 20 is connected to the battery housing at the edge of the mounting hole 11, which can reduce or avoid the occupation of the space in the accommodation chamber 10 by its edge, improve the utilization rate of the space in the accommodation chamber 10, and is beneficial to reducing the volume of the battery housing. At the same time, the installation method of the conductive terminal assembly 20 on the battery housing is relatively simple, which can simplify the installation operation of the conductive terminal assembly 20 on the battery housing and reduce the assembly difficulty of the battery 100.

[0100] When the conductive terminal assembly 20 includes a conductive terminal 21 and the conductive terminal 21 is in a plate shape. The size of the conductive terminal assembly 20 in the thickness direction is relatively small, which can further reduce the size of the battery 100 in the thickness direction and is beneficial to the thinning design of the battery 100.

[0101] The battery pack according to an embodiment of the present invention includes at least two batteries of the above embodiment.

[0102] The battery pack itself, by adopting the battery 100 of the above embodiment, the conductive terminal assembly 20 is connected to the battery housing at the edge, which can reduce or avoid the occupation of the space in the accommodation cavity 10 by its edge, improve the utilization rate of the space in the accommodation cavity 10, and is beneficial to reducing the volume of the battery 100 and the battery pack. At the same time, the installation method of the conductive terminal assembly 20 on the battery housing is relatively simple, which can simplify the installation operation of the conductive terminal assembly 20 on the battery housing and reduce the assembly difficulty of the battery 100.

[0103] The electrical equipment according to the embodiment of the present invention includes the battery 100 of the above embodiment or includes the battery pack of the above embodiment.

[0104] The electrical equipment of the present application, by adopting the battery 100 or the battery pack of the above embodiment, can reduce the volume of the battery 100 and reduce the assembly difficulty of the battery 100.

[0105] In the present application, the type of the electrical equipment is not limited. For example, in Figure 7 the example, the electrical equipment is a vehicle 1000, and the battery 100 is arranged at the bottom of the vehicle body 200.

[0106] Preferably, the conductive terminal assembly 20 includes a conductive terminal 21, and the conductive terminal 21 is in a plate shape. It can be understood that when the battery 100 is assembled to the vehicle 1000, the thickness direction of the battery 100 is the same as the height direction of the vehicle body 200. Thus, the thickness of the battery 100 can be thinned, thereby reducing the occupation of the space in the height direction of the vehicle 1000 by the battery 100.

[0107] For those of ordinary skill in the art, the other constitutions and operations of the housing assembly, the battery 100, the battery pack and the electrical equipment according to the embodiments of the present invention are already known, and will not be described in detail here.

[0108] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 invention. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0109] Although the embodiments of the present invention 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 principle and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A housing assembly, characterized in that: include: A battery housing, wherein the battery housing is enclosed to form a receiving cavity, and a mounting hole communicating with the receiving cavity is provided on the battery housing; A conductive terminal assembly is inserted into the mounting hole and is sealed and connected to the battery housing along the edge of the mounting hole.

2. The housing assembly according to claim 1, characterized in that: The conductive terminal assembly includes: a conductive terminal, the conductive terminal is inserted into the mounting hole to connect to the battery cell; The battery housing is a conductive member, and the conductive terminal is welded to the battery housing along the edge of the mounting hole.

3. The housing assembly according to claim 1, characterized in that: The conductive terminal assembly comprises: A conductive terminal, the conductive terminal is inserted into the mounting hole to connect to the battery cell; A sheath, the sheath is placed outside the conductive terminal, and the sheath is sealed and connected to the battery housing along the edge of the mounting hole; An insulating seal is hermetically connected between the conductive terminal and the sheath.

4. The housing assembly according to claim 3, characterized in that: The battery housing is a conductive member, the sheath is a conductive member, and the sheath is welded to the battery housing along the edge of the mounting hole.

5. The housing assembly according to claim 3, characterized in that: The insulating seal is an injection molded part, and the insulating seal connects the conductive terminal and the sheath into one piece through injection molding to achieve a sealed connection.

6. The housing assembly according to claim 3, characterized in that: The sheath includes an integrally formed sleeve and a flange, the sleeve is placed outside the conductive terminal, the flange is located at an end of the sleeve away from the accommodating cavity, the flange surrounds the mounting hole and stops at the battery housing, and the flange is sealed and connected to the battery housing along the edge of the mounting hole.

7. The housing assembly according to claim 1, characterized in that: There are two conductive terminal assemblies, one is a positive terminal and the other is a negative terminal, and two mounting holes are provided on the battery housing; The battery housing is a conductive member, and the two conductive terminal assemblies each include: Conductive terminals, each of the two conductive terminals is provided with a mounting hole, one conductive terminal is connected to the positive electrode tab of the battery cell, and the other conductive terminal is connected to the negative electrode tab of the battery cell; A sheath, each of the conductive terminals is covered with a sheath, and the sheath is welded to the battery housing along the edge of the mounting hole; An insulating seal is provided between each of the conductive terminals and the sheath.

8. The housing assembly according to claim 1, characterized in that: There are two conductive terminal assemblies, one is a positive terminal and the other is a negative terminal, and two mounting holes are provided on the battery housing; The battery housing is a conductive member; One of the two conductive terminal assemblies includes a first conductive terminal, the first conductive terminal is inserted into one of the mounting holes and is welded to the battery housing; Another conductive terminal assembly includes: a second conductive terminal, the second conductive terminal being inserted into another of the mounting holes; A sheath, the sheath is placed on the second conductive terminal, and the sheath is welded to the battery housing along an edge of the mounting hole; an insulating seal, the insulating seal being sealingly connected between the second conductive terminal and the sheath; One of the first conductive terminal and the second conductive terminal is used to connect to the positive electrode tab of the battery cell, and the other is used to connect to the negative electrode tab of the battery cell.

9. The housing assembly according to claim 2 or 3, characterized in that: The conductive terminal is in a plate shape.

10. The housing assembly according to any one of claims 1 to 8, characterized in that: The battery housing comprises: A shell side wall, the shell side wall surrounds and forms the accommodating cavity, and the accommodating 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, wherein the second cover plate is disposed to cover the second opening.

11. The housing assembly according to claim 10, characterized in that: The mounting hole is arranged on the side wall of the shell.

12. A battery, characterized in that: include: The housing assembly according to any one of claims 1 to 11; A battery core is disposed in the accommodating cavity and is electrically connected to the conductive terminal assembly.

13. A battery pack, characterized in that: Comprising at least two batteries as claimed in claim 12.

14. An electrical device, characterized in that: Includes the battery as claimed in claim 12, or includes the battery pack as claimed in claim 13.

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