Battery cell assembly, battery and electrical device

Abstract

Disclosed in the present application are a battery cell assembly (100), a battery (200), and an electrical device (300). In the battery cell assembly (100) of embodiments of the present application, the battery cell assembly (100) comprises a first battery cell (10) and a second battery cell (20). The first battery cell (10) comprises a first tab (11), a second tab (12), a third tab (13), and a fourth tab (14). The second battery cell (20) comprises a fifth tab (21) and a sixth tab (22). The first tab (10) and the second tab (20) are distributed in the length direction. The third tab (13) and the fifth tab (21) abut against each other and are electrically connected to each other. The fourth tab (14) and the sixth tab (22) abut against each other and are electrically connected to each other. The first tab (11) and the second tab (12) are configured to be electrically connected to an external element.

Description

Battery components, batteries and electrical equipment

[0001] Priority information

[0002] This application claims priority and benefits of patent application No. 2023226919801 filed with the State Intellectual Property Office of China on September 28, 2023, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present invention relates to the technical field of batteries, and in particular to a battery core assembly, a battery and an electrical device. Background Art

[0004] With the advancement of science and technology, batteries are widely used in various electronic devices to provide power. As batteries in these devices need to maximize battery capacity within a smaller space and increase their energy density, irregularly shaped batteries are becoming increasingly common. The current approach to irregularly shaped batteries is to fabricate electrodes that match the battery's shape and then laminate them into battery cells. However, the fabrication of irregularly shaped electrodes results in low material utilization, making battery cell production more difficult and increasing production costs.

[0005] Summary of the Invention

[0006] Embodiments of the present application provide a battery cell assembly, a battery, and an electrical device.

[0007] The battery cell assembly of the embodiment of the present application includes a first battery cell and a second battery cell, the first battery cell includes a first pole tab, a second pole tab, a third pole tab and a fourth pole tab; the second battery cell includes a fifth pole tab and a sixth pole tab, and the first battery cell and the second battery cell are distributed along the length direction; the third pole tab and the fifth pole tab abut against each other and are electrically connected together, the fourth pole tab and the sixth pole tab abut against each other and are electrically connected together, and the first pole tab and the second pole tab are configured to electrically connect to external components.

[0008] In the battery cell assembly of the embodiment of the present application, the battery cell assembly includes a first battery cell and a second battery cell, the first battery cell includes a first pole tab, a second pole tab, a third pole tab and a fourth pole tab, the second battery cell includes a fifth pole tab and a sixth pole tab, the first battery cell and the second battery cell are distributed along the length direction, the third pole tab and the fifth pole tab abut each other and are electrically connected together, the fourth pole tab and the sixth pole tab abut each other and are electrically connected together, and the first pole tab and the second pole tab are configured to electrically connect to external components. In this way, the battery cell assembly can form a power supply unit for storing electrical energy through the first battery cell and the second battery cell, and the first battery cell and the second battery cell are directly connected together through the pole tabs to form a special-shaped battery, thereby maximizing the utilization of space. At the same time, dividing the battery cell assembly into two batteries can reduce the difficulty of preparation, improve the utilization rate of materials, and reduce the preparation cost.

[0009] In certain embodiments, the first, second, third, and fourth tabs are spaced apart in the width direction, and the fifth and sixth tabs are spaced apart in the width direction. Thus, the first battery cell can be positioned on one side of the second battery cell, with the first and second cells arranged along the length direction. Furthermore, the first and second tabs can be connected to external components, allowing the external components and the second cell to be placed on one side of the first cell simultaneously, thereby improving space utilization.

[0010] In certain embodiments, both the first and second cells are rectangular. By assembling the two cells into a cell within a special-shaped battery, the need to die-cut the electrode sheets into specific shapes can be avoided, reducing material waste and improving material utilization. This can also improve space utilization and increase the battery's energy density.

[0011] In certain embodiments, the first, second, third, and fourth tabs are disposed on a side of the first cell that is close to the second cell, and the fifth and sixth tabs are disposed on a side of the second cell that is close to the first cell. This shortens the distance between the two tabs to be connected, facilitates interconnection, simplifies connection difficulty, saves connection materials, and reduces connection costs.

[0012] In certain embodiments, the spacing between the third and fourth tabs along the width direction is equal to the spacing between the fifth and sixth tabs along the width direction. Thus, while the third and fifth tabs are in abutment and engagement, the fourth and sixth tabs can abut and electrically connect with each other. Thus, the two sets of tabs are simultaneously abutted and connected, ensuring that they can be combined to form a specific power supply unit.

[0013] In some embodiments, the third and fourth tabs are disposed between the first and second tabs. Thus, the second cell is smaller in volume than the first cell, and the second cell can be connected to the middle of the first cell via the fifth and sixth tabs to form a "convex"-shaped battery structure, enabling various spatial layouts.

[0014] In some embodiments, the battery cell assembly further includes an insulating bracket disposed between the first and second battery cells. The insulating bracket further includes a clearance opening configured to clear the third and fifth tabs, as well as the fourth and sixth tabs. In this manner, the insulating bracket can be disposed between the first and second battery cells, preventing collisions between the first and second cells and ensuring safe battery operation. Furthermore, the clearance opening allows the tabs to pass through, allowing the first and second cells to be connected via the tabs.

[0015] In some embodiments, the third electrode tab is provided with a first extension portion, the first extension portion is formed with a first surface and a second surface opposite to each other, the first extension portion is bent so that the first surface is close to the first battery cell, the fourth electrode tab is provided with a second extension portion, the second extension portion is formed with a third surface and a fourth surface opposite to each other, the second extension portion is bent so that the third surface is close to the first battery cell, the fifth electrode tab is provided with a third extension portion, the third extension portion is formed with a fifth surface and a sixth surface opposite to each other, the third extension portion is bent so that the fifth surface is close to the second battery cell, the sixth electrode tab is provided with a fourth extension portion, the fourth extension portion is formed with a seventh surface and an eighth surface opposite to each other, the fourth extension portion is bent so that the seventh surface is close to the second battery cell, in the thickness direction, the first extension portion and the second extension portion are close to the upper surface of the first battery cell, and the third extension portion and the fourth extension portion are close to the lower surface of the second battery cell; the first surface is fixedly connected to the fifth surface, and the third surface is fixedly connected to the seventh surface; or the second surface is fixedly connected to the sixth surface, and the fourth surface is fixedly connected to the eighth surface. In this way, the tabs are connected together by welding, and the extension can be easily attached to another extension, while leaving space for the welding clamp to avoid affecting the welding process. At the same time, after welding is completed, the extension can be bent and retracted toward the battery cell, thereby saving space and improving space utilization.

[0016] In some embodiments, the first and second tabs have opposite electrical properties, the third and fourth tabs have opposite electrical properties, and the fifth and sixth tabs have opposite electrical properties. Thus, by setting the electrical properties of the two cell tabs and interconnecting the two cell tabs via the corresponding electrical properties, the first and second cells can be connected to form a power supply unit that stores electrical energy, such as a special-shaped battery.

[0017] The battery of the embodiment of the present application includes a first cover, a second cover, a shell body and the battery cell assembly described in any one of the above embodiments, the first cover, the shell body and the second cover are connected in sequence to define an accommodating space, and the battery cell assembly is arranged in the accommodating space.

[0018] In certain embodiments, the housing is provided with a pole assembly, which is positioned opposite and electrically connected to the first tab. This allows the pole assembly to be electrically connected to the first tab. Furthermore, the pole assembly can be positioned between the first and second battery cells in the housing, allowing it to connect to an external electrical component. This electrical component can be positioned alongside the second battery cell on one side of the first battery cell, resulting in higher space utilization.

[0019] In some embodiments, the housing body is further provided with an injection port, which is located on the same side of the housing body as the terminal assembly. This allows electrolyte to be injected through the injection port, which is then sealed by a sealing assembly that engages with the injection port. Placing the sealing assembly and injection port on the same side of the terminal assembly improves space utilization.

[0020] The electric device in the embodiment of the present application includes the battery described in the above embodiment.

[0021] In the battery cell assembly, battery and electrical equipment of the embodiment of the present application, the battery cell assembly includes a first battery cell and a second battery cell, the first battery cell includes a first pole tab, a second pole tab, a third pole tab and a fourth pole tab along the battery cell, the second battery cell includes a fifth pole tab and a sixth pole tab, the first battery cell and the second battery cell are distributed along the length direction, the third pole tab and the fifth pole tab abut each other and are electrically connected together, the fourth pole tab and the sixth pole tab abut each other and are electrically connected together, and the first pole tab and the second pole tab are configured to electrically connect to external components. In this way, the battery cell assembly can form a power supply unit for storing electrical energy through the first battery cell and the second battery cell, and the first battery cell and the second battery cell are directly connected together through the pole tabs to form a special-shaped battery, thereby maximizing the utilization of space. At the same time, dividing the battery cell assembly into two batteries can reduce the difficulty of preparation, improve the utilization of materials, and reduce the preparation cost.

[0022] 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

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0024] FIG1 is a schematic structural diagram of a battery according to an embodiment of the present application;

[0025] FIG2 is a schematic diagram of a planar structure of a battery according to an embodiment of the present application;

[0026] FIG3 is a schematic structural diagram of a battery cell assembly according to an embodiment of the present application;

[0027] FIG4 is another schematic structural diagram of a battery according to an embodiment of the present application;

[0028] FIG5 is another structural schematic diagram of a battery cell assembly according to an embodiment of the present application;

[0029] FIG6 is another schematic structural diagram of a battery cell assembly according to an embodiment of the present application;

[0030] FIG7 is another structural schematic diagram of a battery cell assembly according to an embodiment of the present application;

[0031] FIG8 is another structural schematic diagram of a battery cell assembly according to an embodiment of the present application;

[0032] FIG9 is another structural schematic diagram of a battery cell assembly according to an embodiment of the present application;

[0033] FIG10 is a schematic diagram of an exploded structure of a battery according to an embodiment of the present application;

[0034] FIG11 is a schematic diagram of an electrical device according to an embodiment of the present application.

[0035] Description of main component symbols:

[0036] Battery cell assembly 100, first battery cell 10, first electrode tab 11, second electrode tab 12, third electrode tab 13, first extension 131, first surface 132, second surface 133, fourth electrode tab 14, second extension 141, third surface 142, fourth surface 143, second battery cell 20, fifth electrode tab 21, third extension 211, fifth surface 212, sixth surface 213, sixth electrode tab 22, fourth extension 221, seventh surface 222, eighth surface 223, insulating bracket 50, battery 200, first cover 201, shell body 202, second cover 203, accommodating space 204, electrode assembly 205, sealing assembly 206, injection hole 207, and electrical equipment 300. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, 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 only used to explain the present invention, and are not to be construed as limiting the present invention.

[0038] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0040] Please refer to Figures 1, 2 and 3. The battery cell assembly 100 of the embodiment of the present application includes a first battery cell 10 and a second battery cell 20. The first battery cell 10 includes a first pole tab 11, a second pole tab 12, a third pole tab 13 and a fourth pole tab 14; the second battery cell 20 includes a fifth pole tab 21 and a sixth pole tab 22. The first battery cell 10 and the second battery cell 20 are distributed along the length direction; the third pole tab 13 and the fifth pole tab 21 abut against each other and are electrically connected together, the fourth pole tab 14 and the sixth pole tab 22 abut against each other and are electrically connected together, and the first pole tab 11 and the second pole tab 12 are configured to electrically connect to external components.

[0041] In the battery cell assembly 100 of the embodiment of the present application, the battery cell assembly 100 includes a first battery cell 10 and a second battery cell 20. The first battery cell 10 includes a first electrode 11, a second electrode 12, a third electrode 13, and a fourth electrode 14. The second battery cell 20 includes a fifth electrode 21 and a sixth electrode 22. The first battery cell 10 and the second battery cell 20 are distributed along the length direction. The third electrode 13 and the fifth electrode 21 abut against each other and are electrically connected together. The fourth electrode 14 and the sixth electrode 22 abut against each other and are electrically connected together. The first electrode 11 and the second electrode 12 are configured to electrically connect to external components. In this way, the battery cell assembly 100 can form a power supply unit that stores electrical energy through the first battery cell 10 and the second battery cell 20. The first battery cell 10 and the second battery cell 20 are directly connected together through the electrode tabs, which can form a special-shaped battery 200, maximizing space utilization. At the same time, dividing the battery cell assembly 100 into two batteries can reduce the difficulty of production, improve material utilization, and reduce production costs.

[0042] In related technologies, 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 battery cells. However, the preparation of these shaped pole pieces results in low material utilization and increased manufacturing costs.

[0043] In the embodiment of the present application, the battery cell assembly 100 includes a first battery cell 10 and a second battery cell 20. By preparing two simple battery cells and then electrically connecting them via tabs, they form a specific "special-shaped electrode sheet." This greatly reduces the difficulty of preparing special-shaped batteries and maximizes control utilization.

[0044] It should be noted that the first electrode tab 11 and the second electrode tab 12 are configured to be electrically connected to an external component, which means that the first electrode tab 11 and the second electrode tab 12 can be directly or indirectly connected to the external component. For example, the first electrode tab 11 can be electrically connected to the external component through a terminal.

[0045] In some embodiments, the first electrode tab 11 , the second electrode tab 12 , the third electrode tab 13 , and the fourth electrode tab 14 are spaced apart in the width direction, and the fifth electrode tab 21 and the sixth electrode tab 22 are spaced apart in the width direction.

[0046] In this way, the first battery cell 10 can be arranged on one side of the second battery cell 20, and the first battery cell 10 and the second battery cell 20 are arranged along the length direction. At the same time, the first electrode tab 11 and the second electrode tab 12 can be connected to external components, so that the external components and the second battery cell 20 are placed on one side of the first battery cell 10 at the same time, thereby improving space utilization.

[0047] Referring to FIG. 2 and FIG. 3 , in some embodiments, the first battery cell 10 and the second battery cell 20 are both rectangular.

[0048] In this way, by assembling two rectangular cells into the cell inside the special-shaped battery, the electrode pieces can be prevented from being die-cut into special-shaped special-shaped electrode pieces, which can reduce material waste and improve material utilization. At the same time, it can also improve space utilization and increase the energy density of the battery 200.

[0049] Specifically, the first battery cell 10 includes a first tab 11, a second tab 12, a third tab 13, and a fourth tab 14 spaced apart along the width direction, and the second battery cell 20 includes a fifth tab 21 and a sixth tab 22 spaced apart along the width direction. The first battery cell 10 and the second battery cell 20 are then distributed along the length direction. This allows for a battery 200 with a rational spatial distribution and high space utilization.

[0050] In the embodiment of the present application, there is no limitation on the preparation method of the first battery cell 10 or the second battery cell 20 to meet different needs. For example, the first battery cell 10 or the second battery cell 20 can be prepared by a winding or lamination process. That is to say, both the first battery cell 10 and the second battery cell 20 can be prepared by winding; or both the first battery cell 10 and the second battery cell 20 can be prepared by lamination; or the first battery cell 10 is prepared by winding and the second battery cell 20 is prepared by lamination; or the first battery cell 10 is prepared by lamination and the second battery cell 20 is prepared by winding.

[0051] Referring to Figures 1 and 2, in some embodiments, the first pole tab 11, the second pole tab 12, the third pole tab 13 and the fourth pole tab 14 are arranged on the side of the first battery cell 10 close to the second battery cell 20, and the fifth pole tab 21 and the sixth pole tab 22 are arranged on the side of the second battery cell 20 close to the first battery cell 10.

[0052] In this way, the connection distance between the two tabs that need to be connected can be shortened, making it easier to connect them to each other, simplifying the connection difficulty, saving connection materials, and reducing connection costs.

[0053] Specifically, when arranging the battery cells, the tabs of the first battery cell 10 can be oriented toward the second battery cell 20, while the tabs of the second battery cell 20 can be oriented toward the first battery cell 10. This allows the tabs of the first and second battery cells 10, 20 to be connected to be closer together, making it easier to connect the first and second battery cells 10, 20 to form a power supply unit for storing electrical energy, such as a special-shaped battery. This simplifies the connection process, saves connection materials, and reduces connection costs.

[0054] Referring to FIG. 2 , in some embodiments, the interval between the third electrode tab 13 and the fourth electrode tab 14 along the width direction is equal to the interval between the fifth electrode tab 21 and the sixth electrode tab 22 along the width direction.

[0055] In this way, while the third electrode tab 13 and the fifth electrode tab 21 are in abutment and connection, the fourth electrode tab 14 and the sixth electrode tab 22 can be in abutment and electrically connected together. In this way, the two groups of electrode tabs are in abutment and connected together at the same time, ensuring that they can be combined to form a specific power supply unit.

[0056] Further, referring to FIG. 4 , in some embodiments, the third electrode tab 13 and the fourth electrode tab 14 are both disposed between the first electrode tab 11 and the second electrode tab 12 .

[0057] In this way, the volume of the second battery cell 20 is smaller than that of the first battery cell 10, and the second battery cell 20 can be connected to the middle position of the first battery cell 10 through the fifth pole tab 21 and the sixth pole tab 22 to form a "convex" structure battery 200 to achieve a variety of spatial layouts.

[0058] Please refer to Figures 2 and 4. In some embodiments, the tabs of the first battery cell 10 can be arranged in the order of the first tab 11, the second tab 12, the third tab 13 and the fourth tab 14 in the width direction. In other embodiments, the first tab 11 and the second tab 12 on the first battery cell 10 can be respectively arranged on both sides of the battery width direction, and the third tab 13 and the fourth tab 14 can be arranged between the first tab 11 and the second tab 12. The specific details are not limited here.

[0059] For example, the third tab 13 of the first battery cell 10 and the fifth tab 21 of the second battery cell 20 are arranged opposite each other, and the fourth tab 14 of the first battery cell 10 and the sixth tab 22 of the second battery cell 20 are arranged opposite each other. In other words, the top of the third tab 13 and the top of the fifth tab 21 are abutted and connected together, and the top of the fourth tab 14 and the top of the sixth tab 22 are abutted and connected together. In this way, the first battery cell 10 and the second battery cell 20 can be stably connected.

[0060] It should be noted that in the embodiments of the present application, there is no limitation on the method of connecting the tabs. For example, the corresponding tabs may be connected by welding or bonding with a conductive adhesive to meet various requirements.

[0061] At the same time, the first pole ear 11 and the second pole ear 12 can be arranged on the same side of the third pole ear 13 and the fourth pole ear 14. In this way, the battery space is smaller and the shape is more regular. In today's lightweight and portable electrical equipment, the internal space of the electrical equipment can be saved. The saved space is conducive to the installation of other components and is also convenient for the storage and further stacking of batteries, such as stacking into large batteries such as automotive power batteries.

[0062] In addition, after the third tab 13 and the fifth tab 21 are connected, insulating tape (not shown) is provided on both sides of the thickness direction to prevent the third tab 13 from contacting the second battery cell 20 and causing a short circuit in the battery, thereby improving battery safety. It should be noted that after the fourth tab 14 and the sixth tab 22 are connected, insulating tape can also be provided on both sides of the thickness direction.

[0063] Please refer to Figure 2. In some embodiments, the battery cell assembly 100 also includes an insulating bracket 50, which is arranged between the first battery cell 10 and the second battery cell 20. The insulating bracket 50 is also formed with an avoidance opening, which is configured to avoid the third pole tab 13 and the fifth pole tab 21 and to avoid the fourth pole tab 14 and the sixth pole tab 22.

[0064] In this way, the insulating bracket 50 can be disposed between the first battery cell 10 and the second battery cell 20 to prevent collision between the first battery cell 10 and the second battery cell 20, thereby ensuring the safe use of the battery 200. Furthermore, the avoidance opening can also ensure that the tabs can pass through, allowing the first battery cell 10 and the second battery cell 20 to be connected via the tabs.

[0065] Referring to Figures 5 to 9, in some embodiments, the third tab 13 is provided with a first extension portion 131, the first extension portion 131 is formed with a first surface 132 and a second surface 133 opposite to each other, the first extension portion 131 is bent so that the first surface 132 is close to the first battery cell 10, the fourth tab 14 is provided with a second extension portion 141, the second extension portion 141 is formed with a third surface 142 and a fourth surface 143 opposite to each other, the second extension portion 141 is bent so that the third surface 142 is close to the first battery cell 10, the fifth tab 21 is provided with a third extension portion 211, the third extension portion 211 is formed with a fifth surface 212 and a sixth surface 213 opposite to each other, the third extension portion 211 is bent so that The fifth side 212 is close to the second battery cell 20, the sixth electrode tab 22 is provided with a fourth extension portion 221, the fourth extension portion 221 is formed with a seventh side 222 and an eighth side 223 opposite to each other, the fourth extension portion 221 is bent so that the seventh side 222 is close to the second battery cell 20, in the thickness direction, the first extension portion 131 and the second extension portion 141 are close to the upper surface of the first battery cell 10, and the third extension portion 211 and the fourth extension portion 221 are close to the lower surface of the second battery cell 20; the first side 132 is fixedly connected to the fifth side 212, and the third side 142 is fixedly connected to the seventh side 222; or the second side 133 is fixedly connected to the sixth side 213, and the fourth side 143 is fixedly connected to the eighth side 223.

[0066] In this way, the tabs are connected together by welding, and the extension can be easily attached to the other extension, while leaving space to avoid affecting the welding process. At the same time, after the connector and the tab are welded, the extension can be bent and retracted toward the battery cell, thereby saving space and improving space utilization.

[0067] For example, in the thickness direction, the first extension 131 and the second extension 141 are located near the upper surface of the first battery cell 10 and can be bent downward, while the third extension 211 and the fourth extension 221 are located near the lower surface of the second battery cell 20 and can be bent upward. Thus, the first extension 131 and the third extension 211 are connected together by the first connector 31 and then bent, while the second extension 141 and the fourth extension 221 are connected together by the second connector 32 and then bent. This allows the first battery cell 10 and the second battery cell 20 to be located on the same plane, thus avoiding wasted space and improving space utilization.

[0068] Referring to Figure 7 , the second surface 133 can be attached to and fixedly connected with the sixth surface 213. Referring to Figure 8 , the first surface 132 can be attached to and fixedly connected with the fifth surface 212. Referring to Figure 9 , the fourth surface 143 can be attached to and fixedly connected with the eighth surface 223.

[0069] In the embodiment of the present application, the connection method between the tabs is not limited to meet different needs. In Figures 3 and 9, the first battery cell 10 and the second battery cell 20 are juxtaposed in the thickness direction, the fourth side 143 is fixedly connected to the eighth side 223 and bent, and the fourth tab 14 is abutted against the top of the sixth tab 22, with the bending opening facing downward; in Figures 5 and 7, the first battery cell 10 is flipped, the fourth side 143 is fixedly connected to the eighth side 223 and bent, and the fourth tab 14 is abutted against the top of the sixth tab 22, with the bending opening of the first battery cell 10 facing upward and the bending opening of the second battery cell 20 facing downward; in Figures 6 and 8, the first battery cell 10 is flipped, the third side 142 is fixedly connected to the seventh side 222 and bent, and the protruding portions of the fourth tab 14 and the sixth tab 22 can be inserted into each other's bending openings to achieve abutment connection and ensure the stability of the connection.

[0070] 2 and 4 , in some embodiments, the first electrode tab 11 and the second electrode tab 12 have opposite electrical properties, the third electrode tab 13 and the fourth electrode tab 14 have opposite electrical properties, and the fifth electrode tab 21 and the sixth electrode tab 22 have opposite electrical properties.

[0071] In this way, by setting the electrical properties of the two battery cell tabs and electrically connecting the two battery cell tabs to each other, the first battery cell 10 and the second battery cell 20 can be connected to form a power supply unit that stores electrical energy.

[0072] Specifically, if the first electrode 11 is the positive electrode, the second electrode 12 is the negative electrode; if the third electrode 13 is the positive electrode, the fourth electrode 14 is the negative electrode; if the fifth electrode 21 is the positive electrode, the sixth electrode 22 is the negative electrode. The positive and negative electrodes between the two paired electrode tabs can be interchanged. For example, the first electrode 11 is set as the negative electrode and the second electrode 12 is set as the positive electrode, and the electrical properties of the battery cell electrode tabs are not restricted. In other words, it is only necessary for the third electrode 13 and the corresponding fifth electrode 21 to maintain the same polarity, the fourth electrode 14 and the corresponding sixth electrode 22 to maintain the same polarity, and the third electrode 13 and the fourth electrode 14 to maintain opposite polarity.

[0073] Please refer to Figure 10. The battery 200 of the embodiment of the present application includes a first cover body 201, a second cover body 203, a shell body 202 and a battery cell assembly 100 of any one of the above embodiments. The first cover body 201, the shell body 202 and the second cover body 203 are connected in sequence to define an accommodating space 204, and the battery cell assembly 100 is arranged in the accommodating space 204.

[0074] Specifically, the battery 200 of the above embodiment includes a battery housing and a battery cell housed within the housing. The housing includes a housing body 202, a first cover 201, and a second cover 203. The housing body 202 has openings at both ends. The first cover 201 is fixedly connected to one end of the housing body 202 to seal one open end of the housing body 202. The second cover 203 is fixedly connected to the other end of the housing body 202 to seal the other open end of the housing body 202. A storage space 204 for accommodating the battery cell is formed between the housing body 202, the first cover 201, and the second cover 203. In the embodiments of the present application, the specific material of the battery housing is not limited to meet various applications. For example, it can be made of metal materials such as stainless steel, nickel alloy, chromium alloy, or aluminum alloy.

[0075] Further, referring to FIG. 1 and FIG. 10 , in some embodiments, the shell body 202 is provided with a pole assembly 205 , and the pole assembly 205 is arranged opposite to the first electrode tab 11 and electrically connected together.

[0076] In this way, the pole assembly 205 and the first pole ear 11 are electrically connected. At the same time, the pole assembly 205 can be arranged between the first battery cell 10 and the second battery cell 20 of the shell body 202, so that the pole assembly 205 can be connected to an external electrical component, and the electrical component can be arranged on one side of the first battery cell 10 in parallel with the second battery cell 20, which improves space utilization.

[0077] In some embodiments, the shell body 202 is further provided with a liquid injection hole 207 , and the liquid injection hole 207 and the pole assembly 205 are provided on the same side of the shell body 202 .

[0078] In this way, electrolyte can be injected from the injection hole 207, and then sealed by the sealing component 206 and the injection hole 207. The sealing component 206 and the injection hole 207 are arranged on the same side of the pole component 205, which improves space utilization.

[0079] Specifically, a pole assembly 205 is provided on the shell body 202, and the pole assembly 205 is insulated and fixedly connected to the shell body 202. The first pole tab 11 of the first battery cell 10 can be electrically connected to the pole assembly 205, and the second pole tab 12 on the first battery cell 10 can be electrically connected to the battery shell. Specifically, the second pole tab 12 can be electrically connected to the shell body 202. Through the above-mentioned connection method, the electrodes of the battery cell can be led out of the battery 200. This battery cell with a power supply unit for storing electrical energy composed of two battery cells avoids die-cutting the pole pieces into pole pieces of a specific shape, can reduce material waste, and improve material utilization.

[0080] In addition, the shell body 202 is also provided with an injection hole 207 for injecting electrolyte into the interior of the battery 200. After the battery 200 is injected, the injection hole 207 can be sealed with a sealing assembly 206. The sealing assembly 206 includes a sealing plug and a sealing cover. After the injection is completed, the sealing plug is first inserted into the injection hole 207, and then the sealing cover is pressed onto the sealing plug, and the sealing cover is fixed to the shell body 202 to seal the injection hole 207. The sealing plug and the injection hole 207 can be an interference fit. When the sealing cover is pressed onto the sealing plug, the sealing plug will be squeezed. This design can improve the sealing performance of the battery 200. Specifically, the sealing cover and the shell body 202 can be fixedly connected by welding.

[0081] Further, referring to Figures 2 and 4 , in some embodiments, an injection hole 207 can be provided on the shell body 202 on the side of the second tab 12. This arrangement facilitates the injection of electrolyte into the interior of the battery 200 and increases the infiltration rate of the battery cell. Alternatively, in some embodiments, the injection hole 207 can also be provided on the shell body 202 on the side of the terminal assembly 205 (not shown in the figures). This arrangement can reduce the battery space occupied by the sealing assembly 206 and the terminal assembly 205.

[0082] Please refer to FIG. 11 . In the embodiment of the present application, the electric device 300 includes the battery 200 of the above embodiment.

[0083] In the battery cell assembly 100, battery 200, and electrical device 300 of the embodiment of the present application, the battery cell assembly 100 includes a first battery cell 10 and a second battery cell 20. The first battery cell 10 includes a first electrode 11, a second electrode 12, a third electrode 13, and a fourth electrode 14 spaced apart along the width direction. The second battery cell 20 includes a fifth electrode 21 and a sixth electrode 22 spaced apart along the width direction. The first battery cell 10 and the second battery cell 20 are distributed along the length direction. The third electrode 13 and the fifth electrode 21 abut against each other and are electrically connected together. The fourth electrode 14 and the sixth electrode 22 abut against each other and are electrically connected together. The first electrode 11 and the second electrode 12 are configured to electrically connect to external components. In this way, the battery cell assembly 100 can form a power supply unit for storing electrical energy through the first battery cell 10 and the second battery cell 20. The first battery cell 10 and the second battery cell 20 are directly connected together through the electrode tabs, forming a special-shaped battery 200, thereby maximizing space utilization. At the same time, dividing the battery cell assembly 100 into two battery cells can reduce the difficulty of preparation, improve the utilization rate of materials, and reduce the preparation cost.

[0084] In the embodiment of the present application, there is no limitation on the specific type of the electric device 300. It only needs to install the battery 200 of the embodiment of the present application. For example, it can be an integrated or detachable battery-type electric device 300 such as a mobile phone, tablet, walkie-talkie, camera, etc. to meet various needs. In one example, the electric device 300 can be a smart phone. In this case, the battery 200 can be installed in the body of the smartphone. The special-shaped structure can save space for the smartphone and improve space utilization. At this time, the battery 200 can be electrically connected to other external components such as the circuit board of the smartphone through the pole assembly 205 to provide them with electrical energy.

[0085] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0086] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0087] 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 cell assembly, comprising: A first battery cell, comprising a first pole tab, a second pole tab, a third pole tab and a fourth pole tab; A second battery cell, comprising a fifth electrode tab and a sixth electrode tab, wherein the first battery cell and the second battery cell are distributed along a length direction; The third pole tab and the fifth pole tab abut against each other and are electrically connected together, the fourth pole tab and the sixth pole tab abut against each other and are electrically connected together, and the first pole tab and the second pole tab are configured to be electrically connected to an external element.

2. The battery cell assembly according to claim 1, characterized in that: The first pole tab, the second pole tab, the third pole tab and the fourth pole tab are arranged at intervals along the width direction, and the fifth pole tab and the sixth pole tab are arranged at intervals along the width direction.

3. The battery cell assembly according to claim 2, wherein: The first battery cell and the second battery cell are both rectangular.

4. The battery cell assembly according to claim 3, wherein: The first pole tab, the second pole tab, the third pole tab and the fourth pole tab are arranged on a side of the first battery cell close to the second battery cell, and the fifth pole tab and the sixth pole tab are arranged on a side of the second battery cell close to the first battery cell.

5. The battery cell assembly according to claim 4, wherein: The interval between the third pole tab and the fourth pole tab along the width direction is equal to the interval between the fifth pole tab and the sixth pole tab along the width direction.

6. The battery cell assembly according to claim 5, wherein: The third pole tab and the fourth pole tab are both arranged between the first pole tab and the second pole tab.

7. The battery cell assembly according to claim 1, wherein: The battery cell assembly further includes an insulating support, which is disposed between the first battery cell and the second battery cell. The insulating support further includes an escape opening, which is configured to escape the third pole tab and the fifth pole tab and to escape the fourth pole tab and the sixth pole tab.

8. The battery cell assembly according to claim 1, wherein: The third pole tab is provided with a first extension portion, the first extension portion is formed with a first surface and a second surface opposite to each other, the first extension portion is bent so that the first surface is close to the first battery cell, the fourth pole tab is provided with a second extension portion, the second extension portion is formed with a third surface and a fourth surface opposite to each other, the second extension portion is bent so that the third surface is close to the first battery cell, the fifth pole tab is provided with a third extension portion, the third extension portion is formed with a fifth surface and a sixth surface opposite to each other, the third extension portion is bent so that the fifth surface is close to the second battery cell, the sixth pole tab is provided with a fourth extension portion, the fourth extension portion is formed with a seventh surface and an eighth surface opposite to each other, the fourth extension portion is bent so that the seventh surface is close to the second battery cell, in the thickness direction, the first extension portion and the second extension portion are close to the upper surface of the first battery cell, and the third extension portion and the fourth extension portion are close to the lower surface of the second battery cell; The first surface is fixedly connected to the fifth surface, and the third surface is fixedly connected to the seventh surface; or The second surface is fixedly connected to the sixth surface, and the fourth surface is fixedly connected to the eighth surface.

9. The battery cell assembly according to claim 1, wherein: The first pole tab and the second pole tab have opposite electrical properties, the third pole tab and the fourth pole tab have opposite electrical cores, and the fifth pole tab and the sixth pole tab have opposite electrical properties.

10. A battery comprising: a first cover; a second cover; A shell body, wherein the first cover body, the shell body and the second cover body are sequentially connected to define an accommodating space; and The battery cell assembly according to any one of claims 1 to 9, wherein the battery cell assembly is arranged in the accommodating space.

11. The battery according to claim 10, wherein The shell body is provided with a pole assembly, and the pole assembly is arranged opposite to the first pole lug and is electrically connected together.

12. The battery according to claim 11, wherein The shell body is further provided with a liquid injection hole, and the liquid injection hole and the pole assembly are arranged on the same side of the shell body.

13. An electrical device comprising the battery according to any one of claims 10 to 12.

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