Battery shell and battery

Abstract

The utility model provides a battery shell and a battery. The battery shell comprises a shell, a supporting column, a cover plate assembly and an output terminal assembly, a containing cavity is formed in the shell, the supporting column is located in the containing cavity and provided with a hollow groove, the hollow groove is communicated with the outside, the supporting column and the shell jointly form a mounting cavity, the mounting cavity is used for mounting the electrode assembly, and the supporting column is used for sleeving the electrode assembly; the cover plate assembly is connected with the shell and the supporting column and seals the installation cavity, the output terminal assembly comprises a first output terminal and a second output terminal which are insulated from each other, and at least one of the first output terminal and the second output terminal is connected with one end of the supporting column. The hollow structure is formed in the battery shell and communicated with the outside, and the at least one output terminal is connected with one end of the supporting column, so that when the battery shell is applied to the battery, generated heat can be dissipated to the outside through the hollow groove of the supporting column, and the heat dissipation effect of the output terminal is improved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly relates to a battery housing and a battery. Background Art

[0002] A battery generally includes an electrode assembly, a housing, and a cover plate. The cover plate seals the housing to form a protective housing with the housing, and the electrode assembly is accommodated in the protective housing. In the related art, output terminals are usually provided on the cover plate to respectively lead out the positive and negative electrodes of the electrode assembly to the outside of the protective housing. As the charging and discharging power of the battery increases, the heat generation usually also increases. Since the output terminals are the main outlets for the battery current, heat concentration will occur on the output terminals during the operation of the battery. And the output terminals are connected to the electrodes of the electrode assembly. If the heat cannot be effectively dissipated, it will cause the local temperature to be too high, which will affect the stability inside the electrode assembly, and thus affect the electrical performance and safety performance of the battery. Utility Model Content

[0003] Embodiments of this application provide a battery housing and a battery, which can improve the problem that the heat generated on the output terminals during the use of the battery housing cannot be effectively dissipated.

[0004] In a first aspect, embodiments of this application provide a battery housing, including:

[0005] A housing having opposite first and second ends, the housing forming a receiving cavity that extends between the first end and the second end;

[0006] A support column located in the receiving cavity, the support column having a hollow groove that extends between the first end and the second end and is in communication with the outside; an installation cavity is formed jointly by the outer surface of the support column and the inner surface of the housing, the installation cavity is used for installing the electrode assembly, and the support column is used for sleeving the electrode assembly; the material of the support column includes a heat-conducting material;

[0007] A cover plate assembly connecting the housing and the support column, the cover plate assembly sealing the installation cavity;

[0008] An output terminal assembly installed on the cover plate assembly, the output terminal assembly including a first output terminal and a second output terminal that are insulated from each other, and at least one of the first output terminal and the second output terminal is connected to one end of the support column.

[0009] In one embodiment, the cover plate assembly includes a first cover plate and a second cover plate. The first cover plate connects the first end of the housing to the support column, and the second cover plate connects the second end of the housing to the support column. The first output terminal is mounted on the first cover plate, and the first output terminal is connected to one end of the support column.

[0010] The second output terminal is mounted on the first cover plate; or, the second output terminal is mounted on the second cover plate.

[0011] In one embodiment, the first output terminal extends circumferentially along the support column in a ring shape.

[0012] In one embodiment, the first output terminal is integrally formed with the first cover plate; a part of the first cover plate protrudes away from the installation cavity to form the first output terminal.

[0013] In one embodiment, the second output terminal is mounted on the second cover plate, and the second output terminal is connected to the other end of the support column. The material of the support column includes an insulating and heat-conducting material.

[0014] In one embodiment, the second output terminal extends circumferentially along the support column in a ring shape.

[0015] In one embodiment, the second output terminal is integrally formed with the second cover plate; a part of the second cover plate protrudes away from the installation cavity to form the second output terminal.

[0016] In one embodiment, the first output terminal is electrically connected to the first cover plate, and the second output terminal is insulated from the second cover plate; or;

[0017] The first output terminal is electrically connected to the first cover plate, the second output terminal is electrically connected to the second cover plate, and the first cover plate and the second cover plate are insulated from each other.

[0018] In one embodiment, the ratio of the diameter of the hollow groove to the diameter of the accommodation cavity is greater than or equal to 0.05 and less than or equal to 0.1.

[0019] In a second aspect, an embodiment of the present application provides a battery, which includes:

[0020] The battery housing according to any one of the above;

[0021] An electrode assembly, located in the installation cavity of the battery housing and sleeved on the support column. The electrode assembly has a first electrode and a second electrode. The first electrode is electrically connected to the first output terminal of the battery housing, and the second electrode is electrically connected to the second output terminal of the battery housing.

[0022] Advantages of the embodiments of the present application:

[0023] In the embodiments of the present application, the battery housing includes a housing, support columns, a cover plate assembly, and an output terminal assembly. The housing has opposite first and second ends, and the housing forms a receiving cavity that extends between the first and second ends. The support columns are located in the receiving cavity and are provided with hollow grooves that extend between the first and second ends and are in communication with the outside. The outer surface of the support columns and the inner surface of the housing together form a mounting cavity for mounting the electrode assembly. The support columns are used to sleeved the electrode assembly, and the material of the support columns includes a heat-conducting material. The cover plate assembly connects the housing and the support columns, and the cover plate assembly seals the mounting cavity. The output terminal assembly is mounted on the cover plate assembly, and the output terminal assembly includes a first output terminal and a second output terminal that are insulated from each other. At least one of the first output terminal and the second output terminal is connected to one end of the support column. By using the support columns to form a hollow structure in the battery housing and communicating with the outside, and connecting at least one output terminal to one end of the support column, when the battery housing is applied to a battery, the generated heat can be dissipated to the outside through the hollow grooves of the support columns, thereby avoiding the concentration of heat on the output terminals and improving the heat dissipation effect of the output terminals. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 is a schematic structural diagram of a battery housing provided by an embodiment of the present application;

[0026] Figure 2 is a kind of provided by an embodiment of the present application Figure 1 top view and bottom view of the battery housing;

[0027] Figure 3 is a schematic structural diagram of another battery housing provided by an embodiment of the present application;

[0028] Figure 4 is a kind of provided by an embodiment of the present application Figure 3 top view and bottom view of the battery housing;

[0029] Figure 5 is a schematic structural diagram of a battery provided by an embodiment of the present application.

[0030] Description of the Reference Numerals:

[0031] 10, Battery;

[0032] 100, Battery housing; 110, Outer shell; 111, First end; 112, Second end; 113, Accommodation cavity; 120, Support column; 121, Hollow groove; 130, Installation cavity; 140, Cover plate assembly; 141, First cover plate; 142, Second cover plate; 150, Output terminal assembly; 151, First output terminal; 152, Second output terminal; 160, Pressure relief valve;

[0033] 200, Electrode assembly; 300, First current collector plate; 400, Second current collector plate; 500, Lower plastic. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device.

[0035] First, an embodiment of the present application provides a battery housing, as Figure 1 shown, the battery housing 100 includes an outer shell 110. The outer shell 110 has opposite first end 111 and second end 112. The outer shell 110 forms an accommodation cavity 113, and the accommodation cavity 113 extends between the first end 111 and the second end 112, that is, the outer shell 110 is a structure with an open end, so as to facilitate the assembly of other structures inside the outer shell 110. At the same time, the outer shell 110 serves as a protective shell and can protect the structures located inside the outer shell 110.

[0036] The battery housing 100 includes a support column 120. The support column 120 is located inside the accommodation cavity 113, and the support column 120 is provided with a hollow groove 121. The hollow groove 121 extends between the first end 111 and the second end 112, and the hollow groove 121 communicates with the outside, that is, the support column 120 is a hollow tubular structure and is located inside the outer shell 110, and the support column 120 and the outer shell 110 can be arranged as a concentric ring structure.

[0037] Among them, the outer surface of the support column 120 and the inner surface of the outer shell 110 jointly form an installation cavity 130 for installing the electrode assembly 200. The support column 120 is used to sleeved the electrode assembly 200. That is, when installing the electrode assembly 200 into the battery housing 100, the electrode assembly 200 can be directly sleeved on the support column 120, and the support column 120 is used to mechanically support the electrode assembly 200, thereby preventing the electrode sheets in the electrode assembly 200 from expanding and collapsing inward during operation, and further enhancing the overall reliability of the battery 10.

[0038] In addition, a large amount of heat is generated during the operation of the battery 10, and there is a certain temperature difference between the center temperature and the surface temperature of the battery 10. If the heat cannot be dissipated in time and effectively, the local temperature inside the electrode assembly 200 will be too high, resulting in an increase in side reactions of the battery 10 and affecting the electrical performance and safety performance of the battery 10. However, the support column 120 in the embodiment of the present application is a hollow structure and is connected to the outside. The electrode assembly 200 is directly sleeved on the support column 120, and the material of the support column 120 includes a heat-conducting material, so that the heat generated inside the electrode assembly 200 can be diffused to the outside through the hollow groove 121 on the support column 120, thereby preventing heat concentration inside the electrode assembly 200, and further ensuring the stability of the overall performance of the battery 10.

[0039] The battery housing 100 includes a cover plate assembly 140. The cover plate assembly 140 connects the outer shell 110 and the support column 120, and the cover plate assembly 140 seals the installation cavity 130. That is, the cover plate assembly 140, the outer shell 110 and the support column 120 jointly form a sealed installation cavity 130, and the electrode assembly 200 is located in the installation cavity 130 to prevent the external environment from affecting the electrode assembly 200, and further affecting the overall use performance of the battery 10.

[0040] It should be noted that the cover plate assembly 140 only seals the installation cavity 130 and exposes the hollow groove 121 to ensure the connection between the hollow groove 121 and the outside. That is, the cover plate assembly 140 forms an opening at the position corresponding to the hollow groove 121. The outer edge of the cover plate assembly 140 is connected to the edge of the accommodation cavity 113, and the edge of the opening on the cover plate assembly 140 is connected to the edge of the hollow groove 121, thereby forming a sealed installation cavity 130.

[0041] The battery housing 100 further includes an output terminal assembly 150. The output terminal assembly 150 is installed on the cover plate assembly 140. The output terminal assembly 150 includes a first output terminal 151 and a second output terminal 152 that are insulated from each other. The first output terminal 151 and the second output terminal 152 are respectively used to electrically connect to two electrodes of the electrode assembly 200 located in the installation cavity 130, so as to facilitate the electrical connection between the electrode assembly 200 and the external circuit.

[0042] Wherein, at least one of the first output terminal 151 and the second output terminal 152 is connected to one end of the support column 120. That is, at least one of the first output terminal 151 and the second output terminal 152 is disposed at a position close to the hollow groove 121 of the support column 120. As the output terminals of the whole battery 10, heat concentration will also occur on the first output terminal 151 and the second output terminal 152. By disposing them at a position close to the hollow groove 121, the heat on the corresponding output terminal can also be diffused to the outside through the hollow groove 121. The output terminals are used to be electrically connected to the electrodes of the electrode assembly 200 in the installation cavity 130, so that heat concentration on the electrodes of the electrode assembly 200 can also be avoided, which further helps to improve the stability of the overall performance of the battery 10.

[0043] In the battery housing 100 of the embodiment of the present application, it includes a housing 110, a support column 120, a cover plate assembly 140, and an output terminal assembly 150. The housing 110 has opposite first and second ends 111 and 112. The housing 110 forms a receiving cavity 113 that extends between the first end 111 and the second end 112. The support column 120 is located in the receiving cavity 113 and is provided with a hollow groove 121 that extends between the first end 111 and the second end 112, and the hollow groove 121 communicates with the outside. The outer surface of the support column 120 and the inner surface of the housing 110 together form an installation cavity 130 for installing the electrode assembly 200. The support column 120 is used to sleeved the electrode assembly 200. The material of the support column 120 includes a heat-conducting material. The cover plate assembly 140 connects the housing 110 and the support column 120, and the cover plate assembly 140 seals the installation cavity 130. The output terminal assembly 150 is disposed on the cover plate assembly 140. The output terminal assembly 150 includes mutually insulated first and second output terminals 151 and 152. At least one of the first output terminal 151 and the second output terminal 152 is connected to one end of the support column 120. In the present application, by using the support column 120 to form a hollow structure in the battery housing 100 and communicating with the outside, and connecting at least one output terminal to one end of the support column 120, when the battery housing 100 is applied to the battery 10, the generated heat can be dissipated to the outside through the hollow groove 121 of the support column 120, so that heat concentration on the output terminals can be avoided, and thus the heat dissipation effect of the output terminals can be improved.

[0044] Optionally, such as Figure 1 and Figure 3As shown, the cover plate assembly 140 includes a first cover plate 141 and a second cover plate 142. The first cover plate 141 connects the first end 111 of the housing 110 to the support column 120, and the second cover plate 142 connects the second end 112 of the housing 110 to the support column 120. That is, the cover plate assembly 140 includes the first cover plate 141 and the second cover plate 142 respectively located at the first end 111 and the second end 112 of the housing 110, and seals the installation cavity 130 through the first cover plate 141 and the second cover plate 142. At least one of the first cover plate 141 and the second cover plate 142 is integrally formed with the housing 110.

[0045] Among them, the first output terminal 151 is installed on the first cover plate 141, and the first output terminal 151 is connected to one end of the support column 120. The second output terminal 152 is installed on the first cover plate 141, or the second output terminal 152 is installed on the second cover plate 142. That is, the first output terminal 151 is installed at a position close to the hollow groove 121 of the support column 120, and the second output terminal 152 can be installed on the same cover plate or different cover plates as the first output terminal 151. By installing the first output terminal 151 at a position close to the hollow groove 121 of the support column 120, the heat on the first output terminal 151 can be diffused to the outside through the hollow groove 121, and the first output terminal 151 is used to electrically connect to one of the electrodes of the electrode assembly 200 in the installation cavity 130, thereby also avoiding the concentration of heat on this electrode, and further contributing to improving the stability of the overall performance of the battery 10.

[0046] In some embodiments, the first output terminal 151 extends in a ring shape along the circumferential direction of the support column 120, that is, the first output terminal 151 is located on the first cover plate 141 and is arranged around the support column 120, and encloses a central hole, and the central hole communicates with the hollow groove 121 of the support column 120. This structural setting method helps to increase the heat dissipation area between the first output terminal 151 and the hollow groove 121 of the support column 120, thereby contributing to further improving the heat dissipation effect of the first output terminal 151.

[0047] In some other embodiments, the first output terminal 151 is integrally formed with the first cover plate 141, that is, the first output terminal 151 and the first cover plate 141 are an integral whole. A part of the first cover plate 141 protrudes away from the installation cavity 130 to form the first output terminal 151. The first output terminal 151 is connected to the support column 120. That is, the first output terminal 151 is a part of the first cover plate 141, and the first cover plate 141 is connected to the support column through the first output terminal 151, which helps the heat generated on the first output terminal 151 to be directly transferred to the support column 120 and dissipated through the hollow groove 121 of the support column 120. In addition, by setting the first output terminal 151 and the first cover plate 141 as an integral whole, it also helps to simplify the overall structure of the battery case 100, thereby simplifying the assembly process of the battery case 100 and improving production efficiency.

[0048] Optionally, the second output terminal 152 is installed on the second cover plate 142, and the second output terminal 152 is connected to the other end of the support column 120. The material of the support column 120 includes an insulating and heat-conducting material. That is, the second output terminal 152 and the first output terminal 151 are respectively installed on different cover plates, and the second output terminal 152 is also arranged at a position close to the hollow groove 121 of the support column 120 but not electrically connected to the support column 120, so that the heat on the second output terminal 152 can also be diffused to the outside through the hollow groove 121. The second output terminal 152 is used to be electrically connected to the other electrode of the electrode assembly 200 in the installation cavity 130, thereby avoiding the concentration of heat on this electrode and further helping to improve the stability of the overall performance of the battery 10.

[0049] Among them, the material of the support column 120 can be selected as polyether ether ketone as the base material, and the metal particles are coated with polyether ether ketone, which can maintain mutual insulation while realizing the connection between the support column 120 and the first output terminal 151 and the second output terminal 152. The support column 120 can also be selected from other types of insulating and heat-conducting materials, and no special restrictions are made here.

[0050] In some embodiments, the second output terminal 152 extends circumferentially along the support column 120 in a ring shape, that is, the second output terminal 152 is located on the second cover plate 142 and arranged around the support column 120. This structural setting helps to increase the heat dissipation area between the second output terminal 152 and the hollow groove 121 of the support column 120, thereby further helping to improve the heat dissipation effect of the second output terminal 152.

[0051] In some other embodiments, the second output terminal 152 is integrally formed with the second cover plate 142, that is, the second output terminal 152 and the second cover plate 142 are an integral body. A part of the second cover plate 142 protrudes away from the installation cavity 130 to form the second output terminal 152. The second output terminal 152 is connected to the support column 120. That is, the second output terminal 152 is a part of the second cover plate 142, and the second cover plate 142 is connected to the support column through the second output terminal 152, which helps the heat generated on the second output terminal 152 to be directly transferred to the support column 120 and dissipated through the hollow groove 121 of the support column 120. In addition, by setting the second output terminal 152 and the second cover plate 142 as an integral body, it also helps to simplify the overall structure of the battery housing 100, thereby simplifying the assembly process of the battery housing 100 and improving production efficiency.

[0052] In some embodiments, the first output terminal 151 is electrically connected to the first cover plate 141, and the second output terminal 152 is insulated from the second cover plate 142. That is, the first output terminal 151 and the second output terminal 152 are respectively arranged on different cover plates, and one is electrically connected to the cover plate while the other is insulated from the cover plate. Correspondingly, the first cover plate 141 and the second cover plate 142 can be electrically connected to each other or insulated. When the first cover plate 141 and the second cover plate 142 are electrically connected to each other, the first cover plate 141 and the second cover plate 142 can be laser welded to the edges of the first end 111 and the second end 112 of the housing 110 respectively. At the same time, the first cover plate 141 and the second cover plate 142 are also laser welded to the edges of both ends of the support column 120 respectively. That is, the cover plate assembly 140, the housing 110, and the support column 120 are directly electrically connected to each other through laser welding. The support column 120 is used for both heat conduction and electricity conduction. This connection method is simple and convenient, which helps to simplify the assembly of the battery housing 100.

[0053] In some other embodiments, the first output terminal 151 is electrically connected to the first cover plate 141, and the second output terminal 152 is electrically connected to the second cover plate 142. The first cover plate 141 and the second cover plate 142 are insulated from each other. That is, the first output terminal 151 and the first cover plate 141 as a whole serve as one output terminal, and the second output terminal 152 and the second cover plate 142 as a whole serve as another output terminal. Correspondingly, the first cover plate 141, the first end 111 of the housing 110, and the corresponding end of the support column 120 are insulated and sealed, and the second cover plate 142, the second end 112 of the housing 110, and the corresponding other end of the support column 120 are also insulated and sealed. At this time, the support column 120 is only used for heat conduction and mechanical support and is not used for conducting electricity. This connection method enables the overall structures of the first cover plate 141 and the first output terminal 151 to be designed to be the same as those of the second cover plate 142 and the second output terminal 152, thus helping to simplify the matching method between the output terminal assembly 150 and the cover plate assembly 140.

[0054] Optionally, since the setting of the support column 120 improves the heat dissipation effect inside the electrode assembly 200 and the output terminal assembly 150 while occupying a certain space, which will have a certain impact on the overall energy density of the battery 10. Therefore, when designing the support column 120, its size needs to be considered. In the embodiments of the present application, the ratio of the diameter of the hollow groove 121 of the support column 120 to the diameter of the accommodation cavity 113 of the housing 110 is set to be greater than or equal to 0.05 and less than or equal to 0.1. If this ratio is too small, the support column 120 cannot play an effective heat dissipation role. If this ratio is too large, the space occupied by the support column 120 will be too large, thus affecting the overall energy density of the battery 10.

[0055] In the actual manufacturing process, the ratio of the diameter of the hollow groove 121 of the support column 120 to the diameter of the accommodation cavity 113 of the housing 110 can be set to 0.05, 0.06, 0.08, or 0.1, etc. The specific ratio can be selected and adjusted according to actual usage requirements, as long as the overall battery 10 has sufficient energy density and the support column 120 can also play a good heat dissipation effect. There is no special limitation here.

[0056] In some embodiments, when the first output terminal 151 and the second output terminal 152 are located on the same cover plate, for example, both the first output terminal 151 and the second output terminal 152 are mounted on the first cover plate 141. The first output terminal 151 extends in a ring shape along the circumferential direction of the support column 120, and the second output terminal 152 protrudes from the first cover plate 141. Since the first output terminal 151 and the second output terminal 152 are respectively used for electrical connection with an external circuit, in order to avoid interference when the first output terminal 151 and the second output terminal 152 are electrically connected to the outside, the height of the first output terminal 151 protruding from the first cover plate 141 can be set equal to the height of the second output terminal 152 protruding from the first cover plate 141, so as to facilitate the electrical connection design of the first output terminal 151 and the second output terminal 152 with the external circuit.

[0057] As Figure 2 and Figure 4 shown, Figure 2 and Figure 4 in (a) are respectively the top views of the corresponding battery housings, and (b) are respectively the bottom views of the corresponding battery housings. The battery housing 100 further includes a pressure relief valve 160. The pressure relief valve 160 is used to enable the gas inside the battery 10 to be discharged by opening the pressure relief valve 160 when the pressure inside the battery 10 is too high, so as to avoid safety hazards such as explosion caused by excessive pressure inside the battery 10. Among them, the pressure relief valve 160 can be arranged on the first cover plate 141 or the second cover plate 142 in the cover plate assembly 140, or can be arranged on both the first cover plate 141 and the second cover plate 142 at the same time. The structure of the pressure relief valve 160 can be an annular notch arranged on the first cover plate 141 or the second cover plate 142, or a crescent-shaped groove arranged on the first cover plate 141 or the second cover plate 142. Its specific structural shape and installation position can be selected and adjusted according to actual design requirements, and no special limitation is made here.

[0058] Secondly, the embodiments of the present application provide a battery, which includes a battery housing. The specific structure of the battery housing refers to the above embodiments. Since this battery adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0059] As Figure 5As shown, the battery 10 includes a battery housing 100 and an electrode assembly 200. The electrode assembly 200 is located within the installation cavity 130 of the battery housing 100 and is sleeved on the support post 120. The electrode assembly 200 has a first electrode and a second electrode. The first electrode is electrically connected to the first output terminal 151 of the battery housing 100, and the second electrode is electrically connected to the second output terminal 152 of the battery housing 100. The first output terminal 151 and the second output terminal 152 are used to connect to an external circuit, thereby realizing the electrical connection between the electrode assembly 200 and the external circuit.

[0060] When both the first output terminal 151 and the second output terminal 152 are installed on the first cover plate 141 of the cover plate assembly 140, and the first output terminal 151 is electrically connected to the first cover plate 141, the second output terminal 152 is insulated from the first cover plate 141, and the first cover plate 141 is electrically connected to the second cover plate 142, the first electrode of the electrode assembly 200 can be electrically connected to the second cover plate 142 through the first current collector plate 300, thereby realizing the electrical connection between the first electrode and the first output terminal 151. The second electrode of the electrode assembly 200 is separated from the first cover plate 141 and the first output terminal 151 by the lower plastic 500, and is electrically connected to the second output terminal 152 through the second current collector plate 400 provided on the side of the lower plastic 500 facing away from the first cover plate 141.

[0061] It should be noted that the specific connection manner between the first output terminal 151 and the second output terminal 152 and the first electrode and the second electrode of the electrode assembly 200 can be adaptively adjusted according to the specific installation positions of the first output terminal 151 and the second output terminal 152, as well as the electrical connection design manner between the first output terminal 151 and the second output terminal 152 and the corresponding cover plates, and no special restrictions are imposed here.

[0062] Specifically, such as Figure 1As shown in the figure, the battery housing 100 includes a housing 110, support columns 120, a cover plate assembly 140, and an output terminal assembly 150. The housing 110 has opposite first and second ends 111 and 112. The housing 110 forms a receiving cavity 113 that extends between the first end 111 and the second end 112. The support columns 120 are located in the receiving cavity 113 and are provided with hollow grooves 121 that extend between the first end 111 and the second end 112, and the hollow grooves 121 communicate with the outside. The outer surface of the support columns 120 and the inner surface of the housing 110 together form an installation cavity 130 for installing the electrode assembly 200. The support columns 120 are used to sleeved the electrode assembly 200. The material of the support columns 120 includes a heat-conducting material. The cover plate assembly 140 connects the housing 110 and the support columns 120, and the cover plate assembly 140 seals the installation cavity 130. The output terminal assembly 150 is provided on the cover plate assembly 140. The output terminal assembly 150 includes a first output terminal 151 and a second output terminal 152 that are insulated from each other. At least one of the first output terminal 151 and the second output terminal 152 is connected to one end of the support column 120. In this application, by using the support columns 120 to form a hollow structure in the battery housing 100 and communicating with the outside, and at the same time connecting at least one output terminal to one end of the support column 120, when the battery housing 100 is applied to the battery 10, the generated heat can be dissipated to the outside through the hollow grooves 121 of the support columns 120, so as to avoid the concentration of heat on the output terminals, and further improve the heat dissipation effect of the output terminals.

[0063] The embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A battery housing, characterized in that: include: a housing having a first end and a second end opposite to each other, the housing forming a receiving cavity extending between the first end and the second end; A support column is located in the accommodating cavity, the support column is provided with a hollow groove, the hollow groove extends between the first end and the second end, and the hollow groove is connected to the outside; the outer surface of the support column and the inner surface of the shell together form a mounting cavity, the mounting cavity is used to install the electrode assembly, and the support column is used to sleeve the electrode assembly; the material of the support column includes a thermal conductive material; A cover plate assembly, connecting the housing and the support column, the cover plate assembly sealing the installation cavity; An output terminal assembly is mounted on the cover assembly, and the output terminal assembly includes a first output terminal and a second output terminal insulated from each other, and at least one of the first output terminal and the second output terminal is connected to one end of the support column.

2. The battery housing according to claim 1, characterized in that: The cover plate assembly comprises a first cover plate and a second cover plate, wherein the first cover plate connects the first end of the housing and the support column, and the second cover plate connects the second end of the housing and the support column; the first output terminal is mounted on the first cover plate, and the first output terminal is connected to one end of the support column; The second output terminal is mounted on the first cover plate; or the second output terminal is mounted on the second cover plate.

3. The battery housing according to claim 1, characterized in that: The first output terminal extends in a ring shape along the circumference of the support column.

4. The battery casing according to claim 2, characterized in that: The first output terminal is integrally formed with the first cover plate; the first cover plate portion protrudes in a direction away from the mounting cavity and forms the first output terminal.

5. The battery case according to claim 2, characterized in that: The second output terminal is mounted on the second cover plate, and the second output terminal is connected to the other end of the support column; the material of the support column includes insulating heat-conducting material.

6. The battery casing according to claim 5, characterized in that: The second output terminal extends in a ring shape along the circumference of the support column.

7. The battery case according to claim 5, characterized in that: The second output terminal is integrally formed with the second cover plate; the second cover plate portion protrudes in a direction away from the mounting cavity and forms the second output terminal.

8. The battery casing according to claim 5, characterized in that: The first output terminal is electrically connected to the first cover plate, and the second output terminal is insulated and connected to the second cover plate; or; The first output terminal is electrically connected to the first cover plate, the second output terminal is electrically connected to the second cover plate, and the first cover plate and the second cover plate are insulated from each other.

9. The battery casing according to any one of claims 1 to 8, characterized in that: The ratio of the diameter of the hollow groove to the diameter of the accommodating cavity is greater than or equal to 0.05 and less than or equal to 0.

1.

10. A battery, characterized in that: The battery comprises: The battery casing according to any one of claims 1 to 9; The electrode assembly is located in the mounting cavity of the battery shell and is sleeved on the support column; the electrode assembly has a first electrode and a second electrode, the first electrode is electrically connected to the first output terminal of the battery shell, and the second electrode is electrically connected to the second output terminal of the battery shell.

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