CN221176298U - Battery cell assembly, battery and electric equipment - Google Patents

Abstract

The application discloses a battery cell assembly, a battery and an electrical device. The battery cell assembly includes a first battery cell and a second battery cell. The first battery cell includes a first pole ear, a second pole ear, a third pole ear and a fourth pole ear. The second battery cell includes a fifth pole ear and a sixth pole ear. The first battery cell and the second battery cell are distributed along the length direction. The third pole ear and the fifth pole ear are electrically connected. The fourth pole ear and the sixth pole ear are electrically connected. The first pole ear and the second pole ear are configured to be electrically connected to an external element. 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. The first battery cell and the second battery cell are connected together through the pole ears 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.

Description

Cell components, batteries and electrical equipment

Technical Field

The present application relates to the field of battery technology, and more specifically, to a battery cell assembly, a battery, and an electrical device.

Background technique

At present, with the development of science and technology, batteries are widely used in various electronic devices to provide power for electronic devices. As the batteries of electronic devices need to ensure the battery capacity as much as possible in a smaller space, the energy density of the battery should be improved. Therefore, more and more irregularly shaped batteries, i.e., special-shaped batteries, have appeared. For special-shaped batteries, the current method is to prepare special-shaped pole pieces that adapt to the shape of the battery and make them into battery cells through a lamination process. However, the preparation of special-shaped pole pieces will result in low material utilization, the preparation of battery cells is more difficult, and the preparation cost is increased.

Utility Model Content

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

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 lug, a second pole lug, a third pole lug and a fourth pole lug; the second battery cell includes a fifth pole lug and a sixth pole lug, the first battery cell and the second battery cell are distributed along the length direction, the third pole lug is electrically connected to the fifth pole lug, the fourth pole lug is electrically connected to the sixth pole lug, and the first pole lug and the second pole lug are configured to be electrically connected to external elements.

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 ear, a second pole ear, a third pole ear and a fourth pole ear, the second battery cell includes a fifth pole ear and a sixth pole ear, the first battery cell and the second battery cell are distributed along the length direction, the third pole ear and the fifth pole ear are electrically connected, the fourth pole ear and the sixth pole ear are electrically connected, and the first pole ear and the second pole ear are configured to be electrically connected to an external element. In this way, the battery cell assembly can form a power supply unit for storing electric energy through the first battery cell and the second battery cell, and the first battery cell and the second battery cell are connected together through the pole ears 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.

In some embodiments, 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. In this way, the first battery cell can be arranged on one side of the second battery cell, and the first battery cell and the second battery cell are arranged along the length direction. At the same time, the first pole tab and the second pole tab can be connected to an external element, so that the external element and the second battery cell are placed on one side of the first battery cell at the same time, thereby improving space utilization.

In some embodiments, the battery cell assembly includes a transition piece, the transition piece connects the first battery cell and the second battery cell, the transition piece includes a first connector and a second connector, the first connector is configured to electrically connect the third pole tab and the fifth pole tab, and the second connector is configured to electrically connect the fourth pole tab and the sixth pole tab. In this way, the first connector and the second connector can facilitate the connection of different pole tabs, ensuring stable connection between the first battery cell and the second battery cell.

In some embodiments, the first battery cell and the second battery cell are both rectangular. In this way, the battery cell inside the special-shaped battery is assembled using two battery cells, avoiding the need to die-cut the pole piece into a pole piece of a specific shape, which can reduce material waste and improve material utilization. At the same time, it is possible to improve the utilization of space and increase the energy density of the battery.

In some embodiments, the first pole tab, the second pole tab, the third pole tab and the fourth pole tab are arranged on the 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 the side of the second battery cell close to the first battery cell. In this way, the connection distance between the two pole tabs to be connected can be shortened, which is convenient for mutual connection, simplifies the connection difficulty, saves connection materials and reduces the connection cost.

In some embodiments, when the first battery cell and the second battery cell are fixedly connected, the third pole tab and the fifth pole tab are arranged alternately, and the fourth pole tab and the sixth pole tab are arranged alternately. In this way, the space occupied by the gap between the first battery cell and the second battery cell can be further reduced, so that the position relationship between the first battery cell and the second battery cell can be closer, thereby improving the space utilization inside the battery.

In some embodiments, the first connector includes a first connecting portion, a second connecting portion, and a first transition portion connecting the first connecting portion and the second connecting portion, respectively, the first connecting portion is used to electrically connect the third pole tab, and the second connecting portion is used to electrically connect the fifth pole tab. In this way, the third pole tab and the fifth pole tab are electrically connected via the first connecting sheet.

In some embodiments, the second connector includes a third connecting portion, a fourth connecting portion, and a second transition portion connecting the third connecting portion and the fourth connecting portion, respectively, the third connecting portion is used to electrically connect the fourth pole tab, and the fourth connecting portion is used to electrically connect the sixth pole tab. In this way, the fourth pole tab and the sixth pole tab are electrically connected via the second connecting sheet.

In some embodiments, 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, and the The fourth extension portion is formed with a seventh face and an eighth face facing each other, the fourth extension portion is bent so that the seventh face 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 connection portion is fixedly connected to the first face or the second face; and/or the second connection portion is fixedly connected to the fifth face or the sixth face; and/or the third connection portion is fixedly connected to the third face or the fourth face; and/or the fourth connection portion is fixedly connected to the seventh face or the eighth face. In this way, the tab and the connector are connected together by welding, and the extension portion can be easily attached to the connector, while leaving space for the welding clamp to avoid affecting the welding process. At the same time, after the connector and the tab are welded, the extension portion can be bent and retracted toward the battery cell, thereby saving space and improving space utilization.

In some embodiments, the first electrode tab and the second electrode tab have opposite electrical properties, the third electrode tab and the fourth electrode tab have opposite electrical properties, and the fifth electrode tab and the sixth electrode tab have opposite electrical properties. Thus, by setting the electrical properties of the two battery cell tabs and connecting the two battery cell tabs with corresponding electrical properties, the first battery cell and the second battery cell can be connected in series to form a power supply unit for storing electrical energy, such as a heterogeneous battery.

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

In some embodiments, the shell body is provided with a pole assembly, and the pole assembly is arranged opposite to the first pole lug and electrically connected together. In this way, the pole assembly and the first pole lug are electrically connected, and the pole assembly can be arranged between the first battery cell and the second battery cell of the shell body, so that the pole assembly can be connected to an external electrical component, and the electrical component can be arranged side by side with the second battery cell on one side of the first battery cell, so that the space utilization rate is higher.

In some embodiments, 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. In this way, electrolyte can be injected from the liquid injection hole, and then the sealing component cooperates with the liquid injection hole to achieve sealing. The sealing component and the liquid injection hole are arranged on the same side of the pole assembly, which has a higher space utilization rate.

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

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 ear, a second pole ear, a third pole ear and a fourth pole ear, the second battery cell includes a fifth pole ear and a sixth pole ear, the first battery cell and the second battery cell are distributed along the length direction, the third pole ear and the fifth pole ear are electrically connected, the fourth pole ear and the sixth pole ear are electrically connected, and the first pole ear and the second pole ear are configured to be electrically connected to an external element. 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 connected together through the pole ears 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.

Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is a schematic diagram of the structure of a battery according to an embodiment of the present application;

FIG2 is a schematic diagram of a partial structure of a battery according to an embodiment of the present application;

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

FIG4 is an enlarged structural schematic diagram of A in FIG2 according to an embodiment of the present application;

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

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

FIG7 is an enlarged structural schematic diagram of B in FIG3 according to an embodiment of the present application;

FIG8 is another enlarged schematic diagram of the structure of B in FIG3 according to an embodiment of the present application;

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

FIG10 is another schematic structural diagram of a battery cell assembly according to an embodiment of the present application;

FIG11 is another schematic structural diagram of a battery cell assembly according to an embodiment of the present application;

FIG12 is a schematic diagram of an exploded structure of a battery according to an embodiment of the present application;

FIG. 13 is a schematic diagram of an electrical device according to an embodiment of the present application.

Description of main component symbols:

Battery cell assembly 100;

A first battery cell 10, a first pole tab 11, a second pole tab 12, a third pole tab 13, a first extension portion 131, a first surface 132, a second surface 133, a fourth pole tab 14, a second extension portion 141, a third surface 142, a fourth surface 143, a second battery cell 20, a fifth pole tab 21, a third extension portion 211, a fifth surface 212, a sixth surface 213, a sixth pole tab 22, a fourth extension portion 221, a seventh surface 222, an eighth surface 223, an adapter 30, a first connector 31, a first connector 311, a first transition portion 312, a second connector 312, a second connector 32, a third connector 321, a second transition portion 322, a fourth connector 323, a battery 200, a first cover 201, a shell body 202, a second cover 203, an accommodating space 204, a pole assembly 205, a sealing assembly 206, a liquid injection hole 207, and an electrical device 300.

Detailed ways

The embodiments of the present application are described in detail below, and examples of the embodiments 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 application, and cannot be understood as limiting the present application.

In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and/or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and/or settings discussed. In addition, the present application provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the application of other processes and/or the use of other materials.

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 are electrically connected, the fourth pole tab 14 and the sixth pole tab 22 are electrically connected, and the first pole tab 11 and the second pole tab 12 are configured to be electrically connected to external components.

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 pole ear 11, a second pole ear 12, a third pole ear 13 and a fourth pole ear 14; the second battery cell 20 includes a fifth pole ear 21 and a sixth pole ear 22, the first battery cell 10 and the second battery cell 20 are distributed along the length direction, the third pole ear 13 and the fifth pole ear 21 are electrically connected, the fourth pole ear 14 and the sixth pole ear 22 are electrically connected, and the first pole ear 11 and the second pole ear 12 are configured to be electrically connected to external components. In this way, the battery cell assembly 100 can form a power supply unit for storing electric energy through the first battery cell 10 and the second battery cell 20, and the first battery cell 10 and the second battery cell 20 are connected together through the pole ears to form a special-shaped battery, thereby maximizing the utilization rate of space. At the same time, dividing the battery cell assembly 100 into two batteries can reduce the difficulty of preparation, improve the utilization rate of materials, and reduce the preparation cost.

In the related art, due to the development of mobile electronic devices, more and more irregularly shaped batteries have appeared. For irregular-shaped batteries, the current method is to prepare irregular-shaped pole pieces that adapt to the shape of the battery and make battery cells through a lamination process. The preparation of irregular-shaped pole pieces will result in low material utilization and increase the preparation cost.

In the embodiment of the present application, the battery cell assembly 100 includes a first battery cell 10 and a second battery cell 20, which are prepared by preparing two battery cells of simple shapes and then electrically connected through the pole ears to form a specific "special-shaped pole piece". In this way, the difficulty of preparing special-shaped batteries can be greatly reduced and the control utilization rate can be improved as much as possible.

It should be noted that the first pole tab 11 and the second pole tab 12 are configured to be electrically connected to an external element, which means that the first pole tab 11 and the second pole tab 12 can be directly or indirectly connected to an external element. For example, the first pole tab 11 can be electrically connected to an external element through a pole.

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 disposed at intervals along the width direction, and the fifth electrode tab 21 and the sixth electrode tab 22 are disposed at intervals along the width direction.

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 pole ear 11 and the second pole ear 12 can be connected to the 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.

In some embodiments, the battery cell assembly 100 includes a adapter 30, which connects the first battery cell 10 and the second battery cell 20. The adapter 30 includes a first connector 31 and a second connector 32. The first connector 31 is configured to electrically connect the third pole tab 13 and the fifth pole tab 21, and the second connector 32 is configured to electrically connect the fourth pole tab 14 and the sixth pole tab 22.

In this way, the first connector 31 and the second connector 32 can facilitate the connection of different tabs, ensuring a stable connection between the first battery cell 10 and the second battery cell 20 .

Referring to FIG. 2 and FIG. 3 , in some embodiments, the first battery cell 20 and the second battery cell 30 are both rectangular.

In this way, two rectangular cells are assembled into a cell inside a special-shaped battery, avoiding die-cutting the pole piece into a special-shaped pole piece of a specific shape, which can reduce material waste and improve material utilization. At the same time, it can improve space utilization and increase the energy density of the battery 200.

Specifically, 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 arranged at intervals along the width direction, the second battery cell 20 includes a fifth pole tab 21 and a sixth pole tab 22 arranged at intervals along the width direction, and the first battery cell 20 and the second battery cell 30 are distributed along the length direction. In this way, a battery 200 with reasonable spatial distribution and high space utilization can be formed.

In the embodiment of the present application, the preparation method of the first battery cell 10 or the second battery cell 20 is not limited to meet different needs. For example, the first battery cell 10 or the second battery cell 20 can be prepared by winding or lamination, that is, the first battery cell 10 and the second battery cell 20 can be prepared by winding; or 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.

Please refer to Figures 2, 3 and 4. 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.

In this way, the connection distance between the two pole ears that need to be connected can be shortened, which facilitates the connection with each other, simplifies the connection difficulty, saves connection materials, and reduces the connection cost.

Specifically, when the direction of the battery cells is set, the tabs of the first battery cell 10 can be oriented toward the second battery cell 20, and the tabs of the second battery cell 20 can be oriented toward the first battery cell 10. In this way, the tabs that need to be connected between the first battery cell 10 and the second battery cell 20 are closer, which facilitates the connection of the first battery cell 10 and the second battery cell 20 to form a power supply unit for storing electrical energy, such as a special-shaped battery. In this way, the connection difficulty can be simplified, connection materials can be saved, and the connection cost can be reduced.

Please refer to Figures 2, 3 and 5. 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.

Further, referring to FIG. 2 and FIG. 6 , in some embodiments, when the first battery cell 10 and the second battery cell 20 are fixedly connected, the third pole tab 13 and the fifth pole tab 21 are alternately arranged, and the fourth pole tab 14 and the sixth pole tab 31 are alternately arranged.

In this way, the space occupied by the connection position between the first battery cell 10 and the second battery cell 20 can be further reduced, so that the first battery cell 10 and the second battery cell 20 can be closer to each other, thereby improving the space utilization inside the battery.

Exemplarily, the third pole tab 13 of the first battery cell 10 and the fifth pole tab 21 of the second battery cell 20 are arranged at intervals in the width direction of the battery, and the third pole tab 13 and the fifth pole tab 21 are electrically connected through the first connector 31; the fourth pole tab 14 of the first battery cell 10 and the sixth pole tab 22 of the second battery cell 20 are arranged at intervals in the width direction of the battery, and the fourth pole tab 14 and the sixth pole tab 22 are electrically connected through the second connector 32. That is to say, the third pole tab 13 and the fourth pole tab 14 of the first battery cell 10 are arranged at intervals, so that the interval between the third pole tab 13 and the fourth pole tab 14 can accommodate the fifth pole tab 21 and the sixth pole tab 22 of the second battery cell 20 at the same time. At this time, the top of the third pole tab 13 and the top of the fifth pole tab 21 are staggered, and the projections in the width direction overlap, and the top of the fourth pole tab 14 and the top of the sixth pole tab 22 are staggered, and the projections in the width direction overlap. In this way, the space occupied by the connection position between the first battery cell 10 and the second battery cell 20 is reduced, thereby improving the space utilization rate inside the battery.

Please refer to Figures 4, 7 and 8. In some embodiments, the first connecting member 31 includes a first connecting portion 311, a second connecting portion 313 and a first transition portion 312 respectively connecting the first connecting portion 311 and the second connecting portion 313. The first connecting portion 311 is used to electrically connect to the third pole ear 13, and the second connecting portion 313 is used to electrically connect to the fifth pole ear 21.

Further, referring to Figures 4, 7 and 8, in some embodiments, the second connecting member 32 includes a third connecting portion 321, a fourth connecting portion 323 and a second transition portion 322 respectively connecting the third connecting portion 321 and the fourth connecting portion 323, the third connecting portion 321 is used to electrically connect to the fourth pole ear 14, and the fourth connecting portion 323 is used to electrically connect to the sixth pole ear 22.

In this way, the third pole ear 13 and the fifth pole ear 21 are electrically connected through the first connecting member 31, and the fourth pole ear 14 and the sixth pole ear 22 are electrically connected through the second connecting member 32. In this way, the first battery cell 10 and the second battery cell 20 can be connected in series to form a power supply unit for storing electrical energy.

Specifically, the connection part is electrically connected to the tab, the connection part is attached to the outside of the tab, or the connection part is clamped to the tab. When the connection part is attached to the outside of the tab, the connection can be electrically connected by welding or conductive adhesive bonding, which is not limited in this application to meet different needs.

2 and 4 , in one embodiment, the first connection portion 311 of the first connector 31 is attached to the outer side of the third pole tab 13, and the second connection portion 313 is attached to the outer side of the fifth pole tab 22. In other words, the first connection portion 311 is attached to the top of the third pole tab 13, and the second connection portion 313 is attached to the top of the fifth pole tab 22.

It should be noted that, in the embodiments of the present application, the manner in which the connector is connected to the tab is not limited. For example, the connector may be connected by welding or by conductive adhesive bonding to meet a variety of requirements.

In one embodiment, taking the second connector 32 as an example, the third connection portion 321 of the second connector 32 is clamped on the fourth pole ear 14, the fourth connection portion 323 is clamped on the sixth pole ear 22, or the third connection portion 321 is clamped on the fourth pole ear 14, and the fourth connection portion 323 is fitted and connected to the outer side of the sixth pole ear 22. It can also be that the third connection portion 321 is fitted on the outer side of the fourth pole ear 14, the fourth connection portion 323 is clamped on the sixth pole ear 22, or the outer side of the third connection portion 321 is fitted and connected to the fourth pole ear 14, and the fourth connection portion 323 is fitted and connected to the outer side of the sixth pole ear 22, and multiple battery cell electrical connection methods, the above-mentioned multiple connection methods can also be adopted at the first connector 31, and there is no limitation in this application to meet various needs.

In some embodiments, the tops of the pole lugs of the two battery cells are staggered, and the projections in the width direction overlap. At this time, the first transition portion 312 is bent so that the first connection portion 311 and the second connection portion 313 can be connected to the tops of the pole lugs respectively; or the first transition portion 312 is flattened, and the first connection portion 311 and the second connection portion 313 can be clamped in the two pole lugs respectively. At this time, the first transition portion 312 can be a straight connection between the first connection portion 311 and the second connection portion 313, so that the difficulty of preparing the connector can be reduced; or one of the two connection portions in the same connector is connected to the top of the pole lug, and the other connection portion is clamped in the other pole lug. At this time, the transition portion can be straight. If it is necessary to further reduce the connection gap between the two battery cells, a connector with a bent transition portion can also be used to further reduce the connection gap between the battery cells. This application is not limited and will not be specifically expanded here. In this way, in the above embodiment, the tops of the pole lugs of the two battery cells are staggered, and the projections in the width direction overlap. In this way, the gap space between the two battery cells can be further reduced.

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.

In addition, after the third pole tab 13 is connected to the first connector 31, insulating tape (not shown in the figure) is provided on both sides in the thickness direction thereof to prevent the third pole tab 13 or the first connector 31 from contacting the second battery cell 20 and causing a short circuit of the battery, thereby improving the safety of the battery. It should be noted that after the fifth pole tab 21 is connected to the first connector 31, the fourth pole tab 14 is connected to the second connector 32, and the sixth pole tab 22 is connected to the second connector 32, insulating tape may also be provided on both sides in the thickness direction thereof.

Please refer to Figures 9 to 11. In some embodiments, the third pole 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 pole 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 pole 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 surface 212 is close to the second battery cell 20, and the sixth pole tab 2 ...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. A fourth extending portion 221 is provided, and the fourth extending portion 221 forms a seventh surface 222 and an eighth surface 223 opposite to each other. The fourth extending portion 221 is bent so that the seventh surface 222 is close to the second battery cell 20. In the thickness direction, the first extending portion 131 and the second extending portion 141 are close to the upper surface of the first battery cell 10, and the third extending portion 211 and the fourth extending portion 221 are close to the lower surface of the second battery cell 20; the first connecting portion 311 is fixedly connected to the first surface 132 or the second surface 133; and/or the second connecting portion 312 is fixedly connected to the fifth surface 212 or the sixth surface 213; and/or the third connecting portion 321 is fixedly connected to the third surface 142 or the fourth surface 143; and/or the fourth connecting portion 323 is fixedly connected to the seventh surface 222 or the eighth surface 223.

In this way, the tab and the connector are connected together by welding, and the extension part can be easily fitted with the connector, while leaving space for the welding clamp to avoid affecting the welding process. At the same time, after the connector and the tab are welded, the extension part can be bent and retracted toward the battery cell, thereby saving space and improving space utilization.

For example, 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 can be bent downward, and the third extension portion 211 and the fourth extension portion 221 are close to the lower surface of the second battery cell 20 and can be bent upward. In this way, the first extension portion 131 and the third extension portion 211 are connected together by the first connector 31 and then bent, and the second extension portion 141 and the fourth extension portion 221 are connected together by the second connector 32 and then bent, so that the first battery cell 10 and the second battery cell 20 can be on the same plane, avoiding wasting space and improving space utilization.

Please refer to Figure 9, the first surface 132 and the fifth surface 212 can be connected by the first connecting member 31, and the first extension portion 131 and the third extension portion 211 are bent, and the bending groove structure formed can also play a role in stabilizing the connection. Please refer to Figure 10, the second surface 133 and the sixth surface 213 can be connected by the first connecting member 31, and after the extension portion is bent, the first connecting portion 311 can be respectively connected to the top of the third pole ear 13 and the fifth pole ear 21. Please refer to Figure 11, the fourth surface 143 and the eighth surface 223 are connected together by the second connecting member 32. It can be understood that in the embodiment of the present application, the connection method between different pole ears and the connecting member can be different to form a variety of connection methods to meet a variety of needs. In addition, in the embodiment of the present application, the connection method between the connecting member and the pole ear is not limited, and the connecting member and the pole ear can be connected by welding to meet different needs.

Please refer to FIG. 2 and FIG. 3 . In some embodiments, the first pole tab 11 and the second pole tab 12 have opposite electrical properties, the third pole tab 13 and the fourth pole tab 14 have opposite electrical properties, and the fifth pole tab 21 and the sixth pole tab 22 have opposite electrical properties.

In this way, by setting the electrical properties of the two battery cell tabs and connecting the two battery cell tabs to each other through the corresponding electrical properties, the first battery cell 20 and the second battery cell 30 can be connected in series to form a power supply unit for storing electrical energy.

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

Please refer to Figure 12. 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 a accommodating space 204, and the battery cell assembly 100 is arranged in the accommodating space 204.

Specifically, the battery of the above embodiment includes a battery shell and a battery cell contained in the shell. The shell includes a shell body 202, a first cover body 201 and a second cover body 203, and the shell body 202 is provided with openings at both ends; the first cover body 201 is connected and fixed to one end of the shell body 202 to seal an open end of the shell body 202; the second cover body 203 is fixedly connected to the other end of the shell body 202 to seal the other open end of the shell body 202; an accommodating space 204 for accommodating the battery cell is formed between the shell body 202, the first cover body 201 and the second cover body 203. In the embodiment of the present application, the specific material of the battery shell is not limited to meet a variety of uses. For example, it can be made of metal materials such as stainless steel, nickel alloy, chromium alloy or aluminum alloy.

Further, referring to FIG. 2 and FIG. 5 , 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 pole lug 11 and is electrically connected together.

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 set 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 set on one side of the first battery cell 10 in parallel with the second battery cell 20, thereby improving space utilization.

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 .

In this way, electrolyte can be injected from the injection hole 207, and then the sealing component 206 cooperates with the injection hole 207 to achieve sealing. The sealing component 206 and the injection hole 207 are arranged on the same side of the pole component 205, and the space utilization rate is higher.

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 ear 11 of the first battery cell 10 can be electrically connected to the pole assembly 205, and the second pole ear 12 on the first battery cell 10 can be electrically connected to the battery shell. Specifically, the second pole ear 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 of the power supply unit for storing electric energy composed of two battery cells avoids die-cutting the pole piece into a pole piece of a specific shape, which can reduce material waste and improve material utilization.

In addition, the shell body 202 is also provided with an injection hole 207 for injecting electrolyte into 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 on the sealing plug, and the sealing cover is fixed on the shell body 202 to seal the injection hole 207. The sealing plug and the injection hole 207 can be an interference fit, and when the sealing cover is pressed on the sealing plug, the sealing plug will be squeezed. This design can make the sealing performance of the battery 200 better. Specifically, the sealing cover and the shell body 202 can be fixedly connected by welding.

Further, referring to FIG. 5 , in some embodiments, the injection hole 207 can be provided on the shell body 202 on one side of the second pole ear 12, which is conducive to injecting electrolyte into the battery 200 and can improve 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 one side of the pole assembly 205 (not shown in the figure), which can reduce the battery space occupied by the sealing assembly 206 and the pole assembly 205.

Please refer to FIG. 13 . In the embodiment of the present application, the electric device 300 includes the battery 200 of any one of the above embodiments.

In the battery cell assembly 100, the battery 200 and the electrical equipment 300 of the embodiment of the present application, the battery cell assembly 100 includes a first battery cell 10, a second battery cell 20 and an adapter 30, the first battery cell 10 includes a first pole lug 11, a second pole lug 12, a third pole lug 13 and a fourth pole lug 14 arranged at intervals along the width direction, the second battery cell 20 includes a fifth pole lug 21 and a sixth pole lug 22 arranged at intervals along the width direction, the first battery cell 10 and the second battery cell 20 are distributed along the length direction, the adapter 30 connects the first battery cell 10 and the second battery cell 20, the adapter 30 includes a first connector 31 and a second connector 32, the first connector 31 is configured to electrically connect the third pole lug 13 and the fifth pole lug 21, the second connector 32 is configured to electrically connect the fourth pole lug 14 and the sixth pole lug 22, and the first pole lug 11 and the second pole lug 12 are configured to electrically connect external components. In this way, the battery cell assembly 100 can form a power supply unit for storing electric 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 connected together through the tab and the adapter 30 to form a special-shaped battery, thereby improving the utilization rate of space as much as possible. At the same time, dividing the battery cell assembly 100 into two batteries can reduce the difficulty of preparation, improve the utilization rate of materials, and reduce the preparation cost.

In the implementation mode of the present application, the specific type of the electrical device 300 is not limited, and it is only necessary to install the battery 200 of the implementation mode of the present application. For example, it can be an integrated or detachable battery-type electrical device 300 such as a mobile phone, a tablet, a walkie-talkie, a camera, etc. to meet various needs. In one example, the electrical device 300 can be a smart phone. In this case, the battery 200 can be installed in the fuselage, and the special-shaped structure can save space for the smart phone 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 smart phone through the pole assembly 205 to provide it with electrical energy.

In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

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 to 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 (14)

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; 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 is electrically connected to the fifth pole tab, the fourth pole tab is electrically connected to the sixth pole tab, 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 , wherein the first pole tab, the second pole tab, the third pole tab and the fourth pole tab are spaced apart along the width direction, and the fifth pole tab and the sixth pole tab are spaced apart along the width direction. 3. The battery cell assembly according to claim 2 is characterized in that the battery cell assembly includes a adapter, the adapter connects the first battery cell and the second battery cell, the adapter includes a first connector and a second connector, the first connector is configured to electrically connect the third pole lug and the fifth pole lug, and the second connector is configured to electrically connect the fourth pole lug and the sixth pole lug. 4 . The battery cell assembly according to claim 3 , wherein the first battery cell and the second battery cell are both rectangular in shape. 5. The battery cell assembly according to claim 4 is characterized in that the first pole lug, the second pole lug, the third pole lug and the fourth pole lug are arranged on a side of the first battery cell close to the second battery cell, and the fifth pole lug and the sixth pole lug are arranged on a side of the second battery cell close to the first battery cell. 6 . The battery cell assembly according to claim 5 , characterized in that when the first battery cell and the second battery cell are fixedly connected, the third pole tab and the fifth pole tab are alternately arranged, and the fourth pole tab and the sixth pole tab are alternately arranged. 7. The battery cell assembly according to claim 6 is characterized in that the first connecting member includes a first connecting portion, a second connecting portion and a first transition portion respectively connecting the first connecting portion and the second connecting portion, the first connecting portion is used to electrically connect the third pole lug, and the second connecting portion is used to electrically connect the fifth pole lug. 8. The battery cell assembly according to claim 7 is characterized in that the second connecting member includes a third connecting portion, a fourth connecting portion and a second transition portion respectively connecting the third connecting portion and the fourth connecting portion, the third connecting portion is used to electrically connect the fourth pole lug, and the fourth connecting portion is used to electrically connect the sixth pole lug. 9. The battery cell assembly according to claim 8, characterized in that 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 connecting portion is fixedly connected to the first surface or the second surface; and/or The second connecting portion is fixedly connected to the fifth surface or the sixth surface; and/or The third connecting portion is fixedly connected to the third surface or the fourth surface; and/or The fourth connection portion is fixedly connected to the seventh surface or the eighth surface. 10. The battery cell assembly according to claim 1, characterized in that 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 properties, and the fifth pole tab and the sixth pole tab have opposite electrical properties. 11. 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 10, wherein the battery cell assembly is arranged in the accommodating space. 12 . The battery according to claim 11 , 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. 13 . The battery according to claim 12 , wherein the shell body is further provided with a liquid injection hole, and the liquid injection hole and the electrode assembly are provided on the same side of the shell body. 14. An electrical device, characterized in that it comprises the battery according to any one of claims 11 to 13.