Battery and electrical device having battery

Abstract

A battery (10) and an electrical device (100) having the battery (10). The battery (10) comprises: a battery casing (5), a first electrode core (1), a second electrode core (2), a first connecting piece (3), and a second connecting piece (4); an accommodation cavity is formed inside the battery casing (5); a pole terminal assembly (6) is provided on the battery casing (5), and the pole terminal assembly (6) is fixedly connected to the battery casing (5) in an insulating manner; the first electrode core (1) is provided with a first tab group (11) and a second tab group (12), the second electrode core (2) is provided with a third tab group (21) and a fourth tab group (22); the first tab group (11) and the third tab group (21) are electrically connected by means of the first connecting piece (3); at least one of the first tab group (11), the third tab group (21), and the first connecting piece (3) is suitable for being electrically connected to the pole terminal assembly (6); the second tab group (12) is directly or indirectly electrically connected to the fourth tab group (22).

Description

Battery and electrical equipment having the battery

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese patent application filed on September 28, 2023, with application number 202322687153.5 and patent application name “Battery and electrical equipment having the same,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a battery and an electrical device having the battery. Background Art

[0004] The development of mobile electronic devices has led to the emergence of an increasing number of irregularly shaped batteries. The current method for these batteries involves preparing shaped pole pieces that match the battery's shape and then laminating them into pole cores. However, the preparation of these shaped pole pieces results in low material utilization and increased manufacturing costs.

[0005] Summary of the Invention

[0006] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application proposes a battery that can improve material utilization.

[0007] The present application also proposes an electrical device having the battery.

[0008] According to an embodiment of the present application, a battery includes: a battery shell, a first pole core, a second pole core, a first connecting piece and a second connecting piece, a accommodating cavity is formed inside the battery shell, a pole assembly is provided on the battery shell, and the pole assembly is insulated and fixedly connected to the battery shell; the first pole core is arranged in the accommodating cavity, a first pole lug group and a second pole lug group are provided on the first pole core, the first pole lug group and the second pole lug group are separated and electrically opposite; the second pole core is arranged in the accommodating cavity, a third pole lug group and a fourth pole lug group are provided on the second pole core, the third pole lug group and the fourth pole lug group are separated and electrically opposite; the first pole lug group and the third pole lug group are electrically connected through the first connecting piece, and at least one of the first pole lug group, the third pole lug group and the first connecting piece is suitable for being electrically connected to the pole lug assembly; the second pole lug group and the fourth pole lug group are electrically connected directly or indirectly.

[0009] According to the battery of the embodiment of the present application, by providing a first pole core and a second pole core, and electrically connecting the first pole core and the second pole core through a first connecting sheet, the utilization rate of materials can be improved, the difficulty of preparing the pole core can be reduced, and thus the preparation cost of the battery can be reduced.

[0010] According to some embodiments of the present application, the second tab group and the fourth tab group are electrically connected through the second connecting piece, and at least one of the second tab group, the fourth tab group and the second connecting piece is suitable for being electrically connected to the battery housing.

[0011] According to the battery of the embodiment of the present application, by providing a first pole core and a second pole core, and electrically connecting the first pole core and the second pole core through a first connecting plate and a second connecting plate, the utilization rate of materials can be improved, the difficulty of preparing the pole core can be reduced, and thus the preparation cost of the battery can be reduced.

[0012] According to some embodiments of the present application, the first tab group and the second tab group are arranged on a side of the first pole core facing the second pole core, and the third tab group and the fourth tab group are arranged on a side of the second pole core facing the first pole core.

[0013] According to some embodiments of the present application, the battery shell includes a shell body, a first cover body and a second cover body, one end of the shell body is provided with a first opening, and the other end of the shell body is provided with a second opening, the first cover body is connected and fixed to one end of the shell body, and the first cover body is used to seal the first opening, the second cover body is connected and fixed to the other end of the shell body, and the second cover body is used to seal the second opening, and the accommodating cavity is formed between the shell body, the first cover body and the second cover body.

[0014] According to some embodiments of the present application, the second connecting piece includes a first connecting portion, a second connecting portion and a transition portion, the second connecting portion is arranged at at least one end of the first connecting portion, the transition portion is arranged between the first connecting portion and the second connecting portion and is used to connect the first connecting portion with the second connecting portion at the corresponding end, the second pole tab group and the fourth pole tab group are both electrically connected to the first connecting portion, and the second connecting portion is used to be electrically connected to the first cover body and / or the second cover body.

[0015] According to some embodiments of the present application, the second connecting piece includes a third connecting portion and a fourth connecting portion, the second tab group and the fourth tab group are both electrically connected to the third connecting portion, the fourth connecting portion is connected to the third connecting portion, and the fourth connecting portion is at least partially abutted against the shell body to be electrically connected to the shell body.

[0016] According to some embodiments of the present application, the shell body is provided with an injection hole, and the injection hole is communicated with the accommodating cavity. The battery also includes: a sealing plug and a sealing cover, the sealing plug is used to seal the injection hole, and the sealing cover is used to be pressed on the side of the sealing plug away from the accommodating cavity, and the sealing cover is fixed on the shell body.

[0017] According to some embodiments of the present application, the liquid injection hole and the pole assembly are arranged on the same side of the shell body.

[0018] According to some embodiments of the present application, the first connecting piece is constructed as a sheet-like structure, and a first insulating layer is provided on the outer surface of the first connecting piece, and the first insulating layer is used to separate the third pole tab group from the first pole core, and the first pole tab group from the second pole core; and / or, the second connecting piece is constructed as a sheet-like structure, and a second insulating layer is provided on the outer surface of the second connecting piece, and the second insulating layer is used to separate the fourth pole tab group from the first pole core, and the second pole tab group from the second pole core.

[0019] According to some embodiments of the present application, the first connecting piece and the second connecting piece are electrically connected to the corresponding tab group after being stacked and bent to be connected, fixed or attached to the outer surface of the corresponding tab group.

[0020] According to some embodiments of the present application, the pole assembly is fixedly mounted on the battery housing via a first insulating member, a second insulating member and a conductive gasket are provided in the accommodating cavity, the conductive gasket is fixedly mounted on the battery housing via the second insulating member, the conductive gasket is electrically connected to the pole assembly, and the first tab group or the first connecting piece is suitable for being electrically connected to the conductive gasket.

[0021] According to some embodiments of the present application, the battery housing includes a first housing portion and a second housing portion, the first pole core is arranged in the first housing portion, the second pole core is arranged in the second housing portion, the pole column assembly is arranged on the shell wall of the first housing portion, and the structures of the first housing portion and the second housing portion are different.

[0022] According to another embodiment of the present application, an electric device includes the above-mentioned battery.

[0023] According to the electrical equipment of the embodiment of the present application, the battery thereof can improve the utilization rate of materials and reduce the difficulty of preparing the pole cores by providing a first pole core and a second pole core, and electrically connecting the first pole core and the second pole core through a first connecting sheet, thereby reducing the preparation cost of the battery and further reducing the preparation cost of the electrical equipment.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a perspective schematic diagram of a battery according to an embodiment of the present application;

[0026] FIG2 is an exploded schematic diagram of a battery according to an embodiment of the present application;

[0027] FIG3 is a top view of a battery (with the first cover removed) according to one embodiment of the present application;

[0028] FIG4 is a partial enlarged schematic diagram of point A in FIG3 ;

[0029] FIG5 is a partial enlarged schematic diagram of point B in FIG3;

[0030] FIG6 is a perspective schematic diagram of a second connecting piece according to an embodiment of the present application;

[0031] FIG7 is a top view of a battery (with the first cover removed) according to another embodiment of the present application;

[0032] FIG8 is a partial enlarged schematic diagram of point C in FIG7;

[0033] FIG9 is a top view of a battery (with the first cover removed) according to yet another embodiment of the present application;

[0034] FIG10 is a partial enlarged schematic diagram of point D in FIG9;

[0035] FIG11 is a schematic diagram of an electric device according to an embodiment of the present application.

[0036] Figure numerals: electrical equipment 100, battery 10, first pole core 1, first pole tab group 11, second pole tab group 12, second pole core 2, third pole tab group 21, fourth pole tab group 22, first connecting piece 3, second connecting piece 4, first connecting part 41, second connecting part 42, transition part 43, third connecting part 44, fourth connecting part 45, battery shell 5, first cover 51, second cover 52, shell body 53, first shell part 54, second shell part 55, pole assembly 6, sealing assembly 7, sealing plug 71, sealing cover 72, first insulating member 81, second insulating member 82, conductive gasket 83. DETAILED DESCRIPTION

[0037] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0038] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0039] The battery 10 and the electrical device 100 having the battery 10 according to an embodiment of the present application are described in detail below with reference to FIG. 1 to FIG. 11 .

[0040] 1 , a battery 10 according to an embodiment of the present application includes a battery housing 5 , a first pole core 1 , a second pole core 2 , a first connecting piece 3 , and a second connecting piece 4 .

[0041] Among them, a accommodating cavity is formed inside the battery shell 5, and a pole assembly 6 is provided on the battery shell 5. The pole assembly 6 and the battery shell 5 are both conductive parts. The pole assembly 6 and the battery shell 5 are insulated and fixedly connected to avoid short circuit between the pole assembly 6 and the battery shell 5.

[0042] The first pole core 1 and the second pole core 2 are arranged in the accommodating cavity. By dividing the pole core into at least the first pole core 1 and the second pole core 2, the problem of low material utilization caused by manufacturing a whole pole core can be avoided, which is conducive to improving material utilization and reducing the difficulty of preparing the pole core, thereby reducing the preparation cost of the battery 10.

[0043] A first electrode tab group 11 and a second electrode tab group 12 are provided on the first electrode core 1 . The first electrode tab group 11 and the second electrode tab group 12 are separated, and the electrical properties of the first electrode tab group 11 and the second electrode tab group 12 are opposite.

[0044] A third electrode tab group 21 and a fourth electrode tab group 22 are provided on the second electrode core 2 . The third electrode tab group 21 and the fourth electrode tab group 22 are separated and have opposite electrical properties.

[0045] In conjunction with Figures 1 to 4, 7, and 9, the first tab group 11 and the third tab group 21 are spaced apart in the width direction of the battery 10, and the first tab group 11 and the third tab group 21 are electrically connected through the first connecting piece 3. The first tab group 11 and the third tab group 21 have the same electrical properties, and at least one of the first tab group 11, the third tab group 21, and the first connecting piece 3 is suitable for being electrically connected to the pole assembly 6, thereby leading the first electrode to the pole assembly 6.

[0046] It should be noted that the first tab group 11 and the first connection sheet 3 can be electrically connected by welding or bonding. Similarly, the third tab group 21 and the first connection sheet 3 can be electrically connected by welding or bonding.

[0047] In some embodiments not shown in the figures, the first tab group 11 and the third tab group 21 are arranged opposite to each other in the width direction of the battery 10 , so that the length of the first connecting piece 3 can be shortened, which is beneficial to saving materials.

[0048] According to the battery 10 of the embodiment of the present application, by dividing the pole core into at least a first pole core 1 and a second pole core 2, and electrically connecting the first pole core 1 and the second pole core 2 through the first connecting piece 3, the problem of low material utilization caused by manufacturing a whole pole core can be avoided, which is conducive to improving material utilization, reducing the difficulty of preparing the pole core, and thus reducing the preparation cost of the battery 10.

[0049] The second tab group 12 is electrically connected to the fourth tab group 22, either directly or indirectly. For example, as shown in Figures 1, 3, 5, and 8, the second tab group 12 and the fourth tab group 22 are electrically connected via a second connecting tab 4. The second tab group 12 and the fourth tab group 22 have the same electrical properties. At least one of the second tab group 12, the fourth tab group 22, and the second connecting tab 4 is adapted to be electrically connected to the battery housing 5, thereby allowing the second electrode to be extended onto the battery housing 5. Optionally, the second tab group 12 and the fourth tab group 22 are spaced apart in the width direction of the battery 10. In some embodiments not shown in the figures, the second tab group 12 and the fourth tab group 22 are disposed opposite each other in the width direction of the battery 10, thereby shortening the length of the second connecting tab 4. In some embodiments not shown in the figures, the second connecting tab 4 may be omitted, and the second tab group 12 and the fourth tab group 22 may be directly electrically connected.

[0050] According to the battery 10 of the embodiment of the present application, by dividing the pole core into at least a first pole core 1 and a second pole core 2, and the first pole core 1 and the second pole core 2 are electrically connected through the first connecting plate 3 and the second connecting plate 4, the problem of low material utilization caused by manufacturing a whole pole core can be avoided, which is conducive to improving material utilization, reducing the difficulty of preparing the pole core, and thus reducing the preparation cost of the battery 10.

[0051] In some embodiments of the present application, the first tab group 11 and the second tab group 12 are arranged on the same side of the first pole core 1, and the third tab group 21 and the fourth tab group 22 are arranged on the same side of the second pole core 2. Specifically, the first tab group 11 and the second tab group 12 are arranged on the side of the first pole core 1 facing the second pole core 2, and the third tab group 21 and the fourth tab group 22 are arranged on the side of the second pole core 2 facing the first pole core 1. As a result, the first tab group 11, the second tab group 12, the third tab group 21, and the fourth tab group 22 are relatively close to each other, making it convenient to connect the first tab group 11 and the third tab group 21 via the first connecting piece 3, and to connect the second tab group 12 and the fourth tab group 22 via the second connecting piece 4.

[0052] Further, referring to Figures 3, 7, and 9, the first tab group 11 is adjacent to the third tab group 21, and the second tab group 12 is adjacent to the fourth tab group 22. For example, in the width direction of the battery 10, the first tab group 11, the third tab group 21, the fourth tab group 22, and the second tab group 12 are arranged in sequence. In this way, it is convenient to use the first connecting piece 3 to connect the first tab group 11 and the third tab group 21, and it is also convenient to use the second connecting piece 4 to connect the second tab group 12 and the fourth tab group 22.

[0053] In some embodiments of the present application, the battery case 5 may include a shell body 53, a first cover 51, and a second cover 52. One end of the shell body 53 is provided with a first opening, and the other end of the shell body 53 is provided with a second opening. The first cover 51 is connected and fixed to one end of the shell body 53, and the first cover 51 is used to seal the first opening. The second cover 52 is connected and fixed to the other end of the shell body 53, and the second cover 52 is used to seal the second opening. A receiving cavity is formed between the shell body 53, the first cover 51, and the second cover 52. Referring to Figure 2, the upper end of the shell body 53 is the first opening, and the lower end of the shell body 53 is the second opening. The first cover 51 is connected and fixed to the upper end of the shell body 53 to seal the first opening, and the second cover 52 is connected and fixed to the lower end of the shell body 53 to seal the second opening, thereby forming a closed space for the receiving cavity to protect the electrode core in the receiving cavity.

[0054] Optionally, the first cover 51 and the shell body 53 can be fixedly connected together by welding or by screw fasteners, and a sealing ring can be provided between the first cover 51 and the shell body 53 to improve the sealing between the first cover 51 and the shell body 53.

[0055] Similarly, the second cover 52 and the shell body 53 can be fixedly connected together by welding or by screw fasteners, and a sealing ring can be provided between the second cover 52 and the shell body 53 to improve the sealing between the second cover 52 and the shell body 53.

[0056] Of course, in other optional embodiments, the first cover 51 and the shell body 53 may also be an integrally formed part, forming a box structure with an opening at one end, and the second cover 52 is used to seal the opening.

[0057] Optionally, the battery housing 5 can be made of metal materials such as stainless steel, nickel alloy, chromium alloy or aluminum alloy.

[0058] In some embodiments of the present application, as shown in Figures 5 and 6, the second connecting piece 4 may include a first connecting portion 41, a second connecting portion 42, and a transition portion 43. The second connecting portion 42 is disposed at at least one end of the first connecting portion 41, and the transition portion 43 is disposed between the first connecting portion 41 and the second connecting portion 42. The transition portion 43 is used to connect the first connecting portion 41 to the second connecting portion 42 at the corresponding end. The second tab group 12 and the fourth tab group 22 are both electrically connected to the first connecting portion 41, and the second connecting portion 42 is used to electrically connect to the first cover 51 and / or the second cover 52. The second tab group 12 and the fourth tab group 22 are spaced apart in the width direction of the battery 10, and the second tab group 12 and the fourth tab group 22 are respectively electrically connected to the first connecting portion 41 of the second connecting piece 4. This ensures the reliability of the connection between the second tab group 12 or the fourth tab group 22 and the second connecting piece 4.

[0059] In some embodiments, the second connecting portion 42 is adapted to abut against the inner wall of the first cover 51 and / or the second cover 52. Specifically, the second connecting portion 42 of the second connecting piece 4 can abut against the inner wall of at least one of the first cover 51 and the second cover 52. For example, the second connecting portion 42 can abut only against the inner wall of the second cover 52, only against the inner wall of the first cover 51, or against both the inner walls of the first cover 51 and the inner walls of the second cover 52. The second connecting portion 42 can be electrically connected to the corresponding connected cover by welding or bonding, which is a simple and easy-to-operate connection method.

[0060] In other embodiments, the second connection portion 42 may also be electrically connected to the first cover 51 and / or the second cover 52 through a wire, a conductor, etc.

[0061] Optionally, the first connection part 41, the second connection part 42 and the transition part 43 are all constructed as sheet structures, and the first connection part 41, the second connection part 42 and the transition part 43 are all located on different planes. For example, the first connection part 41 and the second connection part 42 are both perpendicular to the transition part 43, and the first connection part 41 is parallel to the second connection part 42.

[0062] Optionally, the connection between the first connection part 41 and the transition part 43 and the connection between the second connection part 42 and the transition part 43 can be provided with a rounded transition, so as to prevent the sharp corners of the second connection piece 4 from scratching the pole core or the user.

[0063] The battery 10 formed in the above manner contains two pole cores inside the battery 10. The two pole cores can be electrically connected through a connecting piece, and the electrodes are led out through the pole column assembly 6 and the battery shell 5 respectively. This can avoid die-cutting the pole pieces of the pole core into a specific shape, which is beneficial to reduce material waste and improve material utilization, thereby reducing the preparation cost of the battery 10. In addition, the battery 10 can be made into special shapes according to actual needs.

[0064] Figures 7 and 8 illustrate schematic structural diagrams of a battery 10 according to another embodiment. Unlike the battery 10 shown in Figure 3 , in the battery 10 shown in Figures 7 and 8 , the second connecting tab 4 includes a third connecting portion 44 and a fourth connecting portion 45. The second and fourth tab groups 12 and 22 are both electrically connected to the third connecting portion 44, and the fourth connecting portion 45 is connected to the third connecting portion 44. The fourth connecting portion 45 is adapted to abut against the inner wall of the shell body 53. In other words, the third connecting portion 44 is used to electrically connect the second and fourth tab groups 12 and 22, while the fourth connecting portion 45 at least partially abuts against the shell body 53 to provide electrical connection therebetween. This allows the second electrode to be led to the shell body 53 via the second connecting tab 4. Optionally, both the third and fourth connecting portions 44 and 45 are sheet-like structures, and the third and fourth connecting portions 44 and 45 are located on different planes, for example, perpendicular to the third and fourth connecting portions 44 and 45.

[0065] Optionally, the fourth connecting portion 45 may also be electrically connected to the shell body 53 through a wire, a conductor, etc.

[0066] In some embodiments of the present application, referring to Figures 9 and 10 , the shell body 53 is provided with an injection hole that communicates with the receiving cavity and is used to inject electrolyte into the receiving cavity. The battery 10 further includes a sealing plug 71 and a sealing cover 72 , which form a sealing assembly 7 . The sealing plug 71 is used to seal the injection hole, and the sealing cover 72 is pressed onto the side of the sealing plug 71 facing away from the receiving cavity. The sealing cover 72 is fixed to the shell body 53 . After the receiving cavity is injected through the injection hole, the sealing plug 71 is first inserted into the injection hole, and then the sealing cover 72 is pressed onto the sealing plug 71. The sealing cover 72 is then fixed to the shell body 53 to seal the injection hole. Optionally, the sealing plug 71 and the injection hole can be an interference fit, so that when the sealing cover 72 is pressed onto the sealing plug 71, the sealing plug 71 is squeezed. This design can improve the sealing performance of the battery 10. Specifically, the sealing cover 72 and the shell body 53 can be fixedly connected by welding.

[0067] It should be noted that the injection hole can be positioned anywhere on the battery housing 5 and is not limited in this application. In one embodiment of the present application, the injection hole is positioned on the housing body 53 on one side of the terminal assembly 6. That is, the injection hole and the terminal assembly 6 are positioned on the same side of the housing body 53. This allows the injection hole to share space with the terminal assembly 6, reducing the space occupied by the injection hole and improving the volumetric energy density of the battery 10.

[0068] In some embodiments of the present application, the first connecting tab 3 is constructed as a sheet-like structure, and a first insulating layer (not shown) is provided on the outer surface of the first connecting tab 3. The first insulating layer is used to separate the third tab group 21 from the first pole core 1, and the first tab group 11 from the second pole core 2. After the first tab group 11 is connected to the first connecting tab 3, and the third tab group 21 is connected to the first connecting tab 3, respectively, the first insulating layer is provided on the outer surface of the first connecting tab 3 to prevent the third tab group 21 or the first connecting tab 3 from contacting the first pole core 1, and to prevent the first tab group 11 or the first connecting tab 3 from contacting the second pole core 2, which may cause a short circuit in the battery 10, thereby improving the safety of the battery 10.

[0069] Optionally, after the first tab group 11 and the third tab group 21 are electrically connected to the first connecting piece 3 , a first insulating layer is attached to the surface of the first connecting piece 3 .

[0070] Optionally, the first insulating layer may be insulating tape, an insulating plastic sheet, etc. The first insulating layer may be attached to the first connecting sheet 3 by gluing.

[0071] In some embodiments of the present application, the second connecting tab 4 is constructed as a sheet-like structure, and a second insulating layer (not shown in the figure) is provided on the outer surface of the second connecting tab 4. The second insulating layer is used to separate the fourth tab group 22 from the first pole core 1, and the second tab group 12 from the second pole core 2. For example, in the battery 10 shown in FIG7 , after the second tab group 12 is connected to the second connecting tab 4, and the fourth tab group 22 is connected to the second connecting tab 4, respectively, a second insulating layer may also be provided on the outer surface of the second connecting tab 4 to prevent the fourth tab group 22 or the second connecting tab 4 from contacting the first pole core 1, and to prevent the second tab group 12 or the second connecting tab 4 from contacting the second pole core 2, which may cause a short circuit in the battery 10, thereby improving the safety of the battery 10.

[0072] Optionally, after the second tab group 12 and the fourth tab group 22 are electrically connected to the second connecting piece 4 , a second insulating layer is attached to the surface of the second connecting piece 4 .

[0073] Optionally, the second insulating layer may be insulating tape, an insulating plastic sheet, etc. The second insulating layer may be attached to the second connecting sheet 4 by gluing.

[0074] In some embodiments of the present application, the first connecting piece 3 and the second connecting piece 4 are electrically connected to the corresponding tab group after being stacked and bent to be connected, fixed or attached to the outer surface of the corresponding tab group.

[0075] Optionally, the first connecting piece 3 is electrically connected to the first tab group 11 after being stacked and bent to be connected and fixed; or, one end of the first connecting piece 3 is attached to the outer surface of the first tab group 11 (for example, a side surface close to the pole assembly 6, not shown in the figure); or, the first connecting piece 3 is electrically connected to the third tab group 21 after being stacked and bent to be connected and fixed; or, one end of the first connecting piece 3 is attached to the outer surface of the third tab group 21 (for example, a side surface close to the first pole core 1, not shown in the figure).

[0076] Similarly, the second connecting piece 4 is electrically connected to the second pole tab group 12 after being stacked and bent to be connected and fixed; or, one end of the second connecting piece 4 is attached to the outer surface of the second pole tab group 12 (for example, a side surface close to the second pole core 2, not shown in the figure); or, the second connecting piece 4 is electrically connected to the fourth pole tab group 22 after being stacked and bent to be connected and fixed; or, one end of the second connecting piece 4 is attached to the outer surface of the fourth pole tab group 22 (for example, a side surface close to the first pole core 1, not shown in the figure).

[0077] In some embodiments of the present application, the pole assembly 6 is fixedly mounted to the battery housing 5 via a first insulating member 81 to ensure insulation between the pole assembly 6 and the battery housing 5. A second insulating member 82 and a conductive gasket 83 are provided in the accommodating cavity. The conductive gasket 83 is fixedly mounted to the battery housing 5 via the second insulating member 82. The second insulating member 82 is used to insulate the conductive gasket 83 from the battery housing 5. The conductive gasket 83 is electrically connected to the pole assembly 6. The first tab group 11 or the first connecting piece 3 is suitable for being electrically connected to the conductive gasket 83. In this way, the conductive gasket 83 can lead the first electrode to the pole assembly 6.

[0078] Optionally, the first insulating member 81 and the second insulating member 82 may be plastic members, rubber members, etc.

[0079] Each of the first tab group 11, the second tab group 12, the third tab group 21, and the fourth tab group 22 includes at least one tab. For example, the first tab group 11 includes at least one first tab, and multiple first tabs can be stacked and gathered to form the first tab group 11. It should be noted that the other tab groups can also be similar to the first tab group 11, that is, the other tab groups can include multiple tabs, and the multiple tabs can be stacked and gathered to form the corresponding tab group.

[0080] In some embodiments of the present application, in conjunction with Figures 1 and 2, the battery housing 5 includes a first housing portion 54 and a second housing portion 55. The first pole core 1 is disposed within the first housing portion 54, the second pole core 2 is disposed within the second housing portion 55, and the pole assembly 6 is disposed on the shell wall of the first housing portion 54. The first housing portion 54 and the second housing portion 55 have different structures. In this way, the battery 10 is constructed as a special-shaped structure. In the example of Figure 1, the first housing portion 54 and the second housing portion 55 are both rectangular parallelepipeds. In the length direction of the battery 10, the size of the first housing portion 54 is larger than the size of the second housing portion 55. In the thickness direction of the battery 10, the size of the first housing portion 54 is equal to the size of the second housing portion 55.

[0081] In some embodiments of the present application, the first pole core 1 or the second pole core 2 may be prepared by a winding or lamination process. That is, the first pole core 1 and the second pole core 2 may both be prepared by winding, or the first pole core 1 and the second pole core 2 may both be prepared by lamination, or the first pole core 1 may be prepared by winding and the second pole core 2 may be prepared by lamination, or the first pole core 1 may be prepared by lamination and the second pole core 2 may be prepared by winding.

[0082] In some embodiments, FIG9 shows another structural schematic diagram of the battery 10 , that is, the shape of the battery 10 can be not only the aforementioned “L” shape, but also a “T” shape, which can be applicable to a wider range of application scenarios.

[0083] 11 , an electric device 100 according to another embodiment of the present application includes the battery 10 of the above embodiment.

[0084] Optionally, the electric device 100 may be a vehicle, a machine tool, a household appliance, etc.

[0085] According to the electrical device 100 of the embodiment of the present application, its battery 10 can avoid the problem of low material utilization caused by manufacturing a whole pole core by dividing the pole core into at least a first pole core 1 and a second pole core 2, and the first pole core 1 and the second pole core 2 are electrically connected by a first connecting piece 3, which is conducive to improving material utilization and reducing the difficulty of preparing the pole core, thereby reducing the preparation cost of the battery 10, and further reducing the preparation cost of the electrical device 100.

[0086] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0087] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0088] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions 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. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0089] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A battery (10), wherein: include: A battery housing (5), wherein a receiving cavity is formed inside the battery housing (5), a pole assembly (6) is arranged on the battery housing (5), and the pole assembly (6) is insulated and fixedly connected to the battery housing (5); A first pole core (1), the first pole core (1) being arranged in the accommodating cavity, the first pole core (1) being provided with a first pole lug group (11) and a second pole lug group (12), the first pole lug group (11) and the second pole lug group (12) being separated and having opposite electrical properties; A second pole core (2), the second pole core (2) being arranged in the accommodating cavity, a third pole lug group (21) and a fourth pole lug group (22) being arranged on the second pole core (2), the third pole lug group (21) and the fourth pole lug group (22) being separated and having opposite electrical properties; as well as a first connecting piece (3), the first pole lug group (11) and the third pole lug group (21) being electrically connected via the first connecting piece (3), and at least one of the first pole lug group (11), the third pole lug group (21) and the first connecting piece (3) being suitable for being electrically connected to the pole assembly (6); The second electrode tab group (12) is electrically connected to the fourth electrode tab group (22) directly or indirectly.

2. The battery (10) according to claim 1, wherein: The battery further comprises: a second connecting piece (4), the second pole tab group (12) and the fourth pole tab group (22) being electrically connected via the second connecting piece (4), and at least one of the second pole tab group (12), the fourth pole tab group (22) and the second connecting piece (4) is suitable for being electrically connected to the battery housing (5).

3. The battery (10) according to claim 1 or 2, wherein: The first pole lug group (11) and the second pole lug group (12) are arranged on a side of the first pole core (1) facing the second pole core (2), and the third pole lug group (21) and the fourth pole lug group (22) are arranged on a side of the second pole core (2) facing the first pole core (1).

4. The battery (10) according to claim 2, wherein: The battery shell (5) comprises a shell body (53), a first cover body (51) and a second cover body (52); one end of the shell body (53) is provided with a first opening, and the other end of the shell body (53) is provided with a second opening; the first cover body (51) is connected and fixed to one end of the shell body (53), and the first cover body (51) is used to seal the first opening; the second cover body (52) is connected and fixed to the other end of the shell body (53), and the second cover body (52) is used to seal the second opening; the accommodating cavity is formed between the shell body (53), the first cover body (51) and the second cover body (52).

5. The battery (10) according to claim 4, wherein: The second connecting piece (4) comprises a first connecting portion (41), a second connecting portion (42) and a transition portion (43); the second connecting portion (42) is arranged at at least one end of the first connecting portion (41); the transition portion (43) is arranged between the first connecting portion (41) and the second connecting portion (42) and is used to connect the first connecting portion (41) with the second connecting portion (42) at the corresponding end; the second pole lug group (12) and the fourth pole lug group (22) are both electrically connected to the first connecting portion (41); and the second connecting portion (42) is used to be electrically connected to the first cover body (51) and / or the second cover body (52).

6. The battery (10) according to claim 4, wherein: The second connecting piece (4) includes a third connecting portion (44) and a fourth connecting portion (45); the second pole lug group (12) and the fourth pole lug group (22) are both electrically connected to the third connecting portion (44); the fourth connecting portion (45) is connected to the third connecting portion (44); and the fourth connecting portion (45) at least partially abuts against the shell body (53) to be electrically connected to the shell body (53).

7. The battery (10) according to any one of claims 4 to 6, wherein: The shell body (53) is provided with a liquid injection hole, the liquid injection hole is connected to the accommodating cavity, and the battery (10) further comprises: A sealing plug (71), the sealing plug (71) being used to seal the liquid injection hole; and A sealing cover (72), the sealing cover (72) is used to be pressed onto a side of the sealing plug (71) facing away from the accommodating cavity, and the sealing cover (72) is fixed on the shell body (53).

8. The battery (10) according to claim 7, wherein: The liquid injection hole and the pole assembly (6) are arranged on the same side of the shell body (53).

9. The battery (10) according to any one of claims 2, 4-8, wherein: The first connecting sheet (3) is constructed as a sheet-like structure, and a first insulating layer is provided on the outer surface of the first connecting sheet (3), and the first insulating layer is used to separate the third pole lug group (21) from the first pole core (1), and the first pole lug group (11) from the second pole core (2); and / or the second connecting sheet (4) is constructed as a sheet-like structure, and a second insulating layer is provided on the outer surface of the second connecting sheet (4), and the second insulating layer is used to separate the fourth pole lug group (22) from the first pole core (1), and the second pole lug group (12) from the second pole core (2).

10. The battery (10) according to any one of claims 2, 4-9, wherein: The first connecting piece (3) and the second connecting piece (4) are electrically connected to the corresponding tab group after being stacked and bent to be connected and fixed or attached to the outer surface of the corresponding tab group.

11. The battery (10) according to any one of claims 1 to 10, wherein: The pole assembly (6) is fixedly mounted on the battery housing (5) via a first insulating member (81); a second insulating member (82) and a conductive gasket (83) are provided in the accommodating cavity; the conductive gasket (83) is fixedly mounted on the battery housing (5) via the second insulating member (82); the conductive gasket (83) is electrically connected to the pole assembly (6); and the first electrode lug group (11) or the first connecting sheet (3) is suitable for being electrically connected to the conductive gasket (83).

12. The battery (10) according to any one of claims 1 to 11, wherein: The battery housing (5) comprises a first housing portion (54) and a second housing portion (55); the first pole core (1) is arranged in the first housing portion (54); the second pole core (2) is arranged in the second housing portion (55); the pole column assembly (6) is arranged on the shell wall of the first housing portion (54); and the first housing portion (54) and the second housing portion (55) have different structures.

13. An electrical device (100), wherein: A battery (10) comprising the battery (10) according to any one of claims 1 to 12.

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