A battery and an electric device

Abstract

The application discloses a battery and a power consumption device. The battery comprises a battery cell, a circuit board and an electrical connector. The battery cell comprises a main body part and a top sealing part. The top sealing part is arranged on one side of the main body part along a first direction. The top sealing part is bent towards one side of the main body part along the first direction. A tab extends from the top sealing part. The circuit board is arranged on one side of the top sealing part away from the main body part. The electrical connector is arranged at least partially on one side of the circuit board along a second direction. One end of the tab away from the battery cell extends to the electrical connector along the first direction and is connected to one side of the electrical connector away from the circuit board. In this way, the tab and the circuit board are electrically connected together on one side of the circuit board along the second direction, and the space of the battery along the second direction is reasonably utilized. The space of the battery along the first direction is not excessively occupied, so that the battery cell can occupy more space along the first direction, which is beneficial to improving the capacity of the battery. Meanwhile, the top sealing part can disperse external stress after being bent, and the risk of cracking is reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery and an electrical device. Background Technology

[0002] Pouch batteries are widely used in smartphones, laptops, tablets, and other devices due to their advantages of being lightweight, flexible, adaptable to irregular shapes, and relatively safe. A pouch battery typically consists of a battery cell and a power circuit module (PCM) located at one end of the cell. The PCM provides overcharge and over-temperature protection for the cell, ensuring its safe operation.

[0003] In related technologies, the tabs of the battery cell are connected to the battery protection board via nickel sheets in the height direction of the cell, which occupies space in the height direction of the battery, resulting in a larger height dimension of the battery; this is not conducive to increasing the battery capacity. Utility Model Content

[0004] This application aims to provide a battery and electrical device that can solve the problem in related technologies where the tabs of the battery cell are connected to the battery protection board via nickel sheets in the height direction of the battery cell, which occupies space in the height direction of the battery, resulting in a large height dimension of the battery and hindering the improvement of battery capacity.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a battery, comprising: a battery cell, a circuit board, and an electrical connector;

[0007] The battery cell has intersecting first and second directions. The battery cell includes a main body and a top sealing portion. The top sealing portion is disposed on one side of the main body along the first direction, and the top sealing portion is bent toward the side of the main body in the first direction. The battery cell has a tab at one end along the first direction, and the tab extends from the top sealing portion.

[0008] The circuit board is located on the side of the top seal portion away from the main body portion, and the electrical connector is at least partially located on the side of the circuit board along the second direction; the end of the electrode away from the battery cell extends along the first direction to the electrical connector and is connected to the side of the electrical connector opposite to the circuit board.

[0009] Optionally, the battery cell further has a third direction, which intersects with the first direction and the second direction respectively;

[0010] The electrode tabs include a first electrode tab, a second electrode tab, a third electrode tab, and a fourth electrode tab; the first electrode tab, the second electrode tab, the third electrode tab, and the fourth electrode tab extend from the top seal portion and are spaced apart along the third direction;

[0011] The number of electrical connectors is four. The four electrical connectors are located on the same side of the circuit board along the second direction. The four electrical connectors are spaced apart along the third direction. The first tab, the second tab, the third tab and the fourth tab are connected to the four electrical connectors one by one.

[0012] Optionally, the electrode includes a first electrode section and a second electrode section. The first electrode section extends from the top seal and extends along the second direction. The second electrode section is connected to the end of the first electrode section away from the top seal. The second electrode section is bent relative to the first electrode section along the first direction and is electrically connected to the side of the electrical connector away from the circuit board.

[0013] Optionally, the electrical connector includes a first connecting portion and a second connecting portion. The first connecting portion is disposed between the tab and the circuit board along the second direction. The side of the first connecting portion away from the circuit board is electrically connected to the tab, and the other side of the first connecting portion is electrically connected to the circuit board. The second connecting portion is connected to the end of the first connecting portion facing the circuit board, and the second connecting portion extends to the side of the circuit board away from the top seal and is electrically connected to the side of the circuit board away from the top seal.

[0014] Optionally, the circuit board further includes solder pads, which are disposed at one end of the circuit board facing the first connection portion and the other end of the circuit board facing the second connection portion, and both the first connection portion and the second connection portion are soldered to the solder pads.

[0015] Optionally, the battery further includes electronic components disposed on the side of the circuit board away from the top seal portion. The electronic components are electrically connected to the circuit board. Along the first direction, the end face of the electrical connector on the side away from the top seal portion is not higher than the highest end face of the electronic component on the side away from the top seal portion.

[0016] Optionally, the battery cell further has a third direction, which intersects with the first direction and the second direction respectively;

[0017] The battery cell further includes side sealing portions, which are disposed on both sides of the main body portion along the third direction and exposed on the main body portion along the first direction; the top sealing portion includes a first top sealing portion and two second top sealing portions, the first top sealing portion is bent toward the main body portion on one side in the first direction, one end of each second top sealing portion is connected to the first top sealing portion, and the other end of each second top sealing portion is bent along the first direction and connected to the adjacent side sealing portion to form a convex angle, so that the convex angle is formed on both sides of the main body portion along the third direction, and the circuit board is disposed between the two convex angles.

[0018] Optionally, the second top sealing portion and the main body portion form an included angle α, satisfying: 30°≤α≤60°.

[0019] Optionally, along the first direction, the end face of the convex angle facing away from the main body is not higher than the highest end face of the electronic device facing away from the battery cell.

[0020] Optionally, the battery further includes a molding compound, which is disposed on the side of the circuit board opposite to the top seal and covers the electronic components;

[0021] Alternatively, the battery may further include a molding compound disposed on one side of the main body along the first direction, and covering the circuit board, the tabs, and the top seal.

[0022] Optionally, the battery further includes a flexible circuit board, which is electrically connected to the circuit board;

[0023] When the molding compound covers the circuit board, the tabs and the top seal, the molding compound has a groove on the side away from the main body. A portion of the flexible circuit board is covered by the molding compound, and a portion of the flexible circuit board is exposed through the groove in the molding compound.

[0024] Secondly, embodiments of this application provide an electrical device, including: a battery as described in any of the preceding claims, the battery being used to supply power to the electrical device.

[0025] In an embodiment of this application, the battery includes a cell, a circuit board, and an electrical connector. The cell has intersecting first and second directions. The cell includes a main body and a top seal. The top seal is located on one side of the main body along the first direction and is bent toward the main body on one side of the first direction. A tab is provided at one end of the cell along the first direction, extending from the top seal. The circuit board is located on the side of the top seal away from the main body. The electrical connector is at least partially located on one side of the circuit board along the second direction. The end of the tab away from the cell extends along the first direction to the electrical connector and is connected to the side of the electrical connector opposite to the circuit board. Thus, by at least partially placing the electrical connector on one side of the circuit board along the second direction, the electrical connector is positioned on the side of the circuit board... The circuit board's width direction allows the electrical connectors to electrically connect the tabs to the circuit board, making efficient use of the battery's second direction, i.e., the width direction. This avoids occupying too much space in the cell's first direction, i.e., the height direction, allowing the cell to occupy more space in the first direction, facilitating an increase in its size and thus improving its capacity. Simultaneously, the top seal bends towards the main body on one side in the first direction, meaning the top seal bends relative to the main body along the second direction (forming an "L-shaped" bending structure). This results in a flatter appearance and smaller size for the cell, while also dispersing external stresses (such as battery expansion and mechanical compression), reducing the risk of cracking, and improving sealing performance.

[0026] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic diagram of a battery according to an embodiment of this application;

[0029] Figure 2 This is an exploded view of a battery according to an embodiment of this application;

[0030] Figure 3 This is a first partial schematic diagram of a battery according to an embodiment of this application;

[0031] Figure 4 This is a second partial schematic diagram of a battery according to an embodiment of this application;

[0032] Figure 5 This is a first partial cross-sectional view of a battery according to an embodiment of this application;

[0033] Figure 6 This is a third partial schematic diagram of a battery according to an embodiment of this application;

[0034] Figure 7 This is a partial schematic diagram of a battery from another perspective according to an embodiment of this application;

[0035] Figure 8 This is a third partial cross-sectional view of a battery according to an embodiment of this application;

[0036] Figure 9 This is an installation diagram of an electrical connector according to an embodiment of this application.

[0037] Figure label:

[0038] 1: Battery cell; 11: Main body; 12: Top seal; 121: First top seal; 122: Second top seal; 13: Electrode; 131: First electrode; 132: Second electrode; 133: Third electrode; 134: Fourth electrode; 135: First electrode section; 136: Second electrode section; 14: Side seal; 15: Protruding corner; 2: Circuit board; 21: Electronic component; 3: Electrical connector; 31: First connection part; 32: Second connection part; 4: Insulating component; 5: Molded component; 51: Groove; 6: Flexible circuit board; 61: First electrical connection part; 62: Transition part; 63: Second electrical connection part; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0039] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0040] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] Before explaining the batteries and electrical devices provided in the embodiments of this application, the application scenarios of the batteries and electrical devices provided in the embodiments of this application will be specifically described:

[0044] A battery typically consists of a cell and a battery protection board located at the end of the cell with tabs. The battery protection board provides overcharge and over-temperature protection for the cell, ensuring its safe operation. The battery protection board is positioned along the height of the cell, and it is stacked sequentially with the tabs and the cell body. However, this structure causes the nickel strips and tabs on the battery protection board to occupy excessive space along the height of the cell, resulting in a larger overall size of the battery in that direction, which is detrimental to increasing battery capacity.

[0045] Therefore, this application provides a battery and an electrical device. The battery and electrical device provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0046] like Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, in some embodiments of this application, the battery includes a cell 1, a circuit board 2, and an electrical connector 3. The cell 1 has intersecting first direction X and second direction Y. The cell 1 includes a main body 11 and a top sealing portion 12. The top sealing portion 12 is disposed on one side of the main body 11 along the first direction X, and the top sealing portion 12 is bent toward the side of the main body 11 in the first direction X. One end of the cell 1 along the first direction X is provided with a tab 13, which extends from the top sealing portion 12. The circuit board 2 is disposed on the side of the top sealing portion 12 away from the main body 11. The electrical connector 3 is at least partially disposed on the side of the circuit board 2 along the second direction Y. The end of the tab 13 away from the cell 1 extends along the first direction X to the electrical connector 3 and is connected to the side of the electrical connector 3 opposite to the circuit board 2.

[0047] In this embodiment, by at least partially disposing of the electrical connector 3 on one side of the circuit board 2 along the second direction Y, that is, by disposing of the electrical connector 3 in the width direction of the circuit board 2, the electrical connector 3 electrically connects the tab 13 to the circuit board 2 in the width direction of the circuit board 2, making reasonable use of the space in the second direction Y of the battery, that is, the width direction; it does not occupy too much space in the first direction X of the cell 1, that is, the height direction, so that the cell 1 can occupy more space in the first direction X, which is conducive to increasing the size of the cell 1 in the first direction X, and is beneficial to increasing the capacity of the cell 1; at the same time, the top seal 12 is bent toward the side of the main body 11 in the first direction X, that is, the top seal 12 is bent relative to the main body 11 along the second direction Y (forming an "L-shaped" bending structure), which makes the appearance of the cell 1 flatter and the volume smaller, while dispersing external stress (such as battery expansion, mechanical extrusion), reducing the risk of cracking, and improving the sealing effect.

[0048] It should be explained that the battery cell 1 has an intersecting first direction X and a second direction Y, and also a third direction Z that intersects both the first direction X and the second direction Y. Preferably, the first direction X, the second direction Y, and the third direction Z can be perpendicular to each other. Specifically, the first direction X refers to the height direction of the battery cell 1, the second direction Y refers to the width direction (thickness direction) of the battery cell 1, and the third direction Z refers to the length direction of the battery cell 1 in practical applications, which will not be elaborated further.

[0049] It should be noted that the main body 11 contains an electrode assembly and an electrolyte. The electrode assembly is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets to separate them and prevent internal short circuits. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly. The electrolyte is a solution containing free ions and is capable of conducting electricity. It plays a crucial role in the electrochemical reaction; the ions in the electrolyte can conduct charge, and the electrolyte can ensure the stability of the electrochemical reaction. The electrolyte may include at least one of the following: acidic electrolytes, such as sulfuric acid; alkaline electrolytes, such as potassium hydroxide; and organic electrolytes, such as lithium salts dissolved in organic solvents. Those skilled in the art can configure the electrolyte according to actual needs, and this application does not impose any limitations on this.

[0050] In specific applications, such as Figure 2 and Figure 8 As shown, the top sealing portion 12 is a sealing edge formed at the top of the main body 11 (the end where the electrode 13 is located) after the aluminum-plastic film is wrapped around the outer periphery of the main body 11 by a heat-sealing process. The electrode 13 extends from the top sealing portion 12 to make electrical connection with the external circuit. The top sealing portion 12 is bent to close the opening of the aluminum-plastic film; that is, the top sealing portion 12 is bent toward the main body 11 in the first direction X. In actual use, it means that the top sealing portion 12 is closed at the top of the main body 11 and then bent along the second direction Y (e.g., Figure 8 As shown, an "L-shaped" bending structure is formed to reduce the possibility of electrolyte leakage. In practical applications, sealant can also be applied to the tab 13 to seal the opening of the aluminum-plastic film. The circuit board 2 is set on the side of the top seal 12 away from the main body 11 after bending, so as to form a certain degree of insulation protection.

[0051] It should be noted that the electrical connector 3 can be at least one of the following: nickel material connector, copper material connector, aluminum material connector, composite metal connector, conductive adhesive, etc., as long as it can electrically connect the tab 13 to the circuit board 2. For example, when the electrical connector 3 is a nickel block, the nickel block is set on one side of the width direction of the circuit board 2. The tab 13 and the circuit board 2 are welded to the nickel block by ultrasonic welding, laser welding, tin soldering or conductive adhesive bonding, thereby realizing the electrical connection between the tab 13 and the circuit board 2. Those skilled in the art can set it according to actual needs, and this application does not limit it.

[0052] It should be explained that the circuit board 2 is located on the side of the top seal 12 away from the main body 11, and the top seal 12 can provide insulation protection for the circuit board 2; the electrical connector 3 is at least partially located on the side of the circuit board 2 along the second direction Y, and the tab 13 can extend to the electrical connector 3 to connect with the side of the electrical connector 3 away from the circuit board 2, so that the tab 13, the electrical connector 3 and the circuit board 2 are electrically connected in sequence in the second direction Y, making reasonable use of the space of the battery cell 1 in the second direction Y, reducing the space occupied by the battery cell 1 in the first direction X, thereby increasing the usable capacity of the battery cell 1.

[0053] like Figure 2 and Figure 7 As shown, in some embodiments of this application, the battery cell 1 further has a third direction Z, which intersects (preferably perpendicular to) the first direction X and the second direction Y respectively; the tab 13 includes a first tab 131, a second tab 132, a third tab 133 and a fourth tab 134; the first tab 131, the second tab 132, the third tab 133 and the fourth tab 134 extend from the top seal 12 and are spaced apart along the third direction Z; the number of electrical connectors 3 is four, the four electrical connectors 3 are located on the same side of the circuit board 2 along the second direction Y, the four electrical connectors 3 are spaced apart along the third direction Z, and the first tab 131, the second tab 132, the third tab 133 and the fourth tab 134 are connected to the four electrical connectors 3 one by one.

[0054] In this embodiment, the first tab 131, the second tab 132, the third tab 133, and the fourth tab 134 extend from the top seal 12 and are spaced apart along the third direction Z. The first tab 131, the second tab 132, the third tab 133, and the fourth tab 134 are connected one-to-one with the four electrical connectors 3, thereby reducing the current in a single tab 13, shortening the current flow path, reducing the possibility of excessive local heat, and improving the battery's lifespan and safety. At the same time, the four electrical connectors 3 are located on the same side of the circuit board 2 along the second direction Y, making reasonable use of the battery's space in the second direction Y, and also facilitating processing.

[0055] For example, the first tab 131, the second tab 132, the third tab 133, and the fourth tab 134 are respectively the first positive tab, the second positive tab, the first negative tab, and the second negative tab. The first positive tab, the second positive tab, the first negative tab, and the second negative tab are all disposed on one side of the circuit board 2 along the second direction Y, and spaced apart along the third direction Z. The first positive tab and the second positive tab are connected in parallel or in series, and the first negative tab and the second negative tab are connected in parallel or in series. This shortens the current flow path, reduces the current in a single tab, reduces local heat accumulation, improves temperature uniformity, and extends battery life. It should be noted that the parallel or series connection of the first positive tab and the second positive tab is achieved internally within the cell 1 through a connector; the parallel or series connection of the first negative tab and the second negative tab is achieved similarly.

[0056] like Figure 2 and Figure 8 As shown, in some embodiments of this application, the battery further includes an insulating member 4, which is disposed between the top seal 12 and the circuit board 2 to provide insulation and isolation for the circuit board 2.

[0057] In this embodiment of the application, by providing an insulating member 4 between the top seal 12 and the circuit board 2, the circuit board 2 can be insulated and isolated, while reducing the risk of short circuit between the top seal 12 and the circuit board 2 after wear.

[0058] In specific applications, the insulating component 4 can be made of at least one of plastic, rubber, fiber composite materials, ceramics, etc. For example, the insulating component 4 is a rubber pad, which can insulate and isolate the circuit board 2 on the one hand, and form a buffer for the top seal 12 on the other hand, reducing the possibility of the tab 13 in the top seal 12 being broken by external impact. Those skilled in the art can make the settings according to actual needs, and this application does not limit them.

[0059] like Figure 3 and Figure 7 As shown, in some embodiments of this application, the tab 13 includes a first tab segment 135 and a second tab segment 136. The first tab segment 135 extends from the top cover portion 12 and extends along the second direction Y. The second tab segment 136 is connected to the end of the first tab segment 135 away from the top cover portion 12. The second tab segment 136 is bent relative to the first tab segment 135 along the first direction X and is electrically connected to the side of the electrical connector 3 away from the circuit board 2.

[0060] In this embodiment, by bending the second tab segment 136 relative to the first tab segment 135 along the first direction X, the second tab segment 136 and the top seal portion 12 form an approximately "L-shaped" groove, which enables the circuit board 2 to be installed in the "L-shaped" groove. At the same time, it facilitates the connection of the second tab segment 136 with the electrical connector 3 in the second direction Y, reducing the processing difficulty.

[0061] In a specific application, the first tab section 135 extends from the top cover 12 and extends along the second direction Y. The second tab section 136 is connected to the first tab section 135. Then, the cell 1 is bent along the first direction X at the edge along the second direction Y, so that the second tab section 136 is located on the side of the electrical connector 3 away from the circuit board 2 along the second direction Y, thereby facilitating connection with the electrical connector 3 along the second direction Y and making reasonable use of the space of the battery along the second direction Y.

[0062] Understandably, compared to related technologies where the tab 13 and the electrical connector 3 are located between the circuit board 2 and the battery cell 1, the second tab segment 136, after being bent, is located on the side of the electrical connector 3 away from the circuit board 2 along the second direction Y, which makes it easier to solder the second tab segment 136 to the electrical connector 3.

[0063] like Figure 3 , Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments of this application, the electrical connector 3 includes a first connecting portion 31 and a second connecting portion 32. The first connecting portion 31 is disposed between the tab 13 and the circuit board 2 along the second direction Y. The side of the first connecting portion 31 away from the circuit board 2 is electrically connected to the tab 13, and the other side of the first connecting portion 31 is electrically connected to the circuit board 2. The second connecting portion 32 is connected to the end of the first connecting portion 31 facing the circuit board 2, and the second connecting portion 32 extends to the side of the circuit board 2 away from the top seal 12 and is electrically connected to the side of the circuit board 2 away from the top seal 12.

[0064] In this embodiment, the first connecting portion 31 of the electrical connector 3 is disposed between the tab 13 and the circuit board 2 along the second direction Y, and the second connecting portion 32 is connected to the end of the first connecting portion 31 facing the circuit board 2. The second connecting portion 32 extends to the side of the circuit board 2 away from the top sealing portion 12, so that the first connecting portion 31 and the second connecting portion 32 form an "L-shaped structure", that is, the electrical connector 3 is connected to the two intersecting end faces of the circuit board 2 respectively, thereby improving the connection stability and reliability of the electrical connector 3.

[0065] In specific applications, such as Figure 8 As shown, the first connecting part 31 refers to the part of the electrical connector 3 disposed between the circuit board 2 and the second tab section 136, and the second connecting part 32 refers to the part of the electrical connector 3 disposed on the circuit board 2 away from the top seal part 12.

[0066] It should be noted that the first connecting part 31 is connected to the end of the circuit board 2 facing the second tab section 136, and the second connecting part 32 is connected to the end of the circuit board 2 away from the top sealing part 12. The connection can be any connection method such as conductive adhesive bonding, ultrasonic welding, laser welding, tin soldering, etc. Those skilled in the art can set it according to actual needs, and this application does not limit it.

[0067] like Figure 5 As shown, in some embodiments of this application, the circuit board 2 further includes pads, which are respectively disposed at one end of the circuit board 2 facing the first connection portion 31 and the other end of the circuit board 2 facing the second connection portion 32. Both the first connection portion 31 and the second connection portion 32 are soldered to the pads.

[0068] In this embodiment of the application, by providing pads (not shown in the figure) at both the end of the circuit board 2 facing the first connection portion 31 and the end of the circuit board 2 facing the second connection portion 32, the first connection portion 31 and the second connection portion 32 can be electrically connected to the circuit board 2 by soldering, thereby improving the connection stability and reliability between the electrical connector 3 and the circuit board 2.

[0069] like Figure 2 , Figure 6 and Figure 8 As shown, in some embodiments of this application, the battery further includes an electronic device 21, which is disposed on the side of the circuit board 2 away from the top seal 12. The electronic device 21 is electrically connected to the circuit board 2. Along the first direction X, the end face of the electrical connector 3 away from the top seal 12 is not higher than the highest end face of the electronic device 21 away from the top seal 12.

[0070] In this embodiment, by setting the end face of the electrical connector 3 away from the top seal 12 to be no higher than the highest end face of the electronic device 21 away from the top seal 12, the electrical connector 3 can make reasonable use of the space of the battery along the first direction X without occupying too much space, thus improving the space utilization rate.

[0071] In specific applications, electronic devices 21 include, but are not limited to: resistors, capacitors, MOSFETs, diodes, indicator lights, temperature sensors, microcontrollers, current sampling resistors, Hall sensors, fuses, relays, etc. Those skilled in the art can configure them according to actual needs, and this application does not impose any restrictions on them.

[0072] It should be noted that, such as Figure 8As shown, the end face of the electrical connector 3 facing away from the top seal 12 is not higher than the highest end face of the electronic device 21 facing away from the top seal 12. Specifically, the highest end face of the electronic device 21 facing away from the top seal 12 refers to the highest electronic device 21 along the first direction X among all electronic devices 21. This highest electronic device 21 facing away from the top seal 12 is the actual highest end face of the electronic device 21 facing away from the top seal 12. It can be understood that multiple electronic devices 21 are provided, and the electrical connector 3... The side face away from the top seal 12 is not higher than the side face away from the top seal 12 of the highest electronic device 21. That is, the side face away from the top seal 12 of the electrical connector 3 is not the highest side face of the electronic device 21 compared to the side face away from the top seal 12. In actual use, the electronic device 21 is designed first. The height of the side face away from the top seal 12 of the electrical connector 3 is further limited by the highest side face of the electronic device 21, so that the space occupied by the electronic device 21 along the first direction X can be utilized.

[0073] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, in some embodiments of this application, the battery cell 1 further has a third direction Z, which intersects (preferably perpendicular to) the first direction X and the second direction Y respectively; the battery cell 1 further includes a side sealing portion 14, which is disposed on both sides of the main body portion 11 along the third direction Z and exposed on the main body portion 11 along the first direction X; the top sealing portion 12 includes a first top sealing portion 121 and two second top sealing portions 122, the first top sealing portion 121 is bent toward one side of the main body portion 11 in the first direction X, one end of each second top sealing portion 122 is connected to the first top sealing portion 121, and the other end of each second top sealing portion 122 is bent along the first direction X and connected to the adjacent side sealing portion 14 to form a convex angle 15, so that convex angles 15 are formed on both sides of the main body portion 11 along the third direction Z, and the circuit board 2 is disposed between the two convex angles 15.

[0074] In this embodiment, the first top sealing portion 121 is bent toward the main body portion 11 on one side in the first direction X. One end of each second top sealing portion 122 is connected to the first top sealing portion 121, and the other end is bent along the first direction X and connected with the adjacent side sealing portion 14 to form a convex angle 15. This allows convex angles 15 to be formed on both sides of the main body portion 11 along the third direction Z, thereby forming an accommodating space between the two convex angles 15. The circuit board 2 can be placed in the accommodating space, thus making reasonable use of the accommodating space between the convex angles 15.

[0075] It should be explained that the top sealing part 12 and the side sealing part 14 are both formed by wrapping the aluminum-plastic film around the outer periphery of the main body part 11 through a heat sealing process, and forming a sealing edge at the top or side (narrow edge) of the main body part 11. The sealing edge formed at the top of the main body part 11 is the top sealing part 12, and the sealing edge formed at the side of the main body part 11 is the side sealing part 14. In actual use, the side sealing part 14 is exposed outside the main body part 11 along the first direction X.

[0076] In specific applications, the first top sealing portion 121 specifically refers to the part of the top sealing portion 12 that fits against the main body portion 11 after being bent, and the second top sealing portion 122 refers to the portion of the top sealing portion 12 between the first top sealing portion 121 and the side sealing portion 14, such as... Figure 4 As shown, the second top seal 122 is bent relative to the first direction X, so that it can be connected with the adjacent side seal 14 to form a convex corner 15; the circuit board 2 is placed between the two convex corners 15, so that the convex corners 15 and the circuit board 2 can share the space of the battery cell 1 in the third direction Z, thereby improving the space utilization of the battery cell 1.

[0077] like Figure 4 As shown, in some embodiments of this application, the second top sealing portion 122 and the main body portion 11 form an included angle α, satisfying: 30°≤α≤60°.

[0078] In this embodiment of the application, by setting the included angle α between the second top sealing part 122 and the main body part 11 within a reasonable range, it is ensured that the convex angle 15 will not occupy too much space in the first direction X, and at the same time, the convex angle 15 will not occupy too much space of the cell 1 in the third direction Z, thus providing more space for the circuit board 2.

[0079] It should be explained that when the included angle α between the second top seal 122 and the main body 11 is less than 30°, the second top seal 122 will occupy too much space in the third direction Z because the position of the side seal 14 is fixed; while when the included angle α between the second top seal 122 and the main body 11 is greater than 60°, the convex angle 15 formed under the same second top seal 122 and side seal 14 will be higher, which means it will occupy too much space of the cell 1 in the third direction Z.

[0080] In specific applications, the included angle α formed between the second top sealing part 122 and the main body part 11 can be set to any value such as 30°, 40°, 45°, 50°, 55°, 60° or a range between two arbitrary values.

[0081] like Figure 3 As shown, in some embodiments of this application, along the first direction X, the end face of the convex angle 15 facing away from the main body 11 is not higher than the highest end face of the electronic device 21 facing away from the battery cell 1.

[0082] In this embodiment, by setting the end face of the protruding corner 15 away from the main body 11 to be no higher than the highest end face of the electronic device 21 away from the main body 11, the protruding corner 15 can share the space of the battery cell 1 in the first direction X with the electronic device 21, thereby avoiding waste of space of the battery cell 1 in the first direction X and improving space utilization.

[0083] In specific applications, multiple electronic devices 21 are provided. The highest one of the electronic devices 21 along the first direction X has its end face facing away from the main body 11 as the highest end face. In actual use, the electronic device 21 is designed first. The height of the convex angle 15 is further limited by the highest end face of the electronic device 21, so that the space occupied by the electronic device 21 along the first direction X can be reasonably utilized.

[0084] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments of this application, the battery also includes a molding compound 5, which is disposed on the side of the circuit board 2 away from the top seal 12 and covers the electronic components 21.

[0085] Alternatively, the battery may also include a molding compound 5, which is disposed on one side of the main body 11 along the first direction X and covers the circuit board 2, the tabs 13 and the top seal 12.

[0086] In this embodiment, the molding compound 5 can provide insulation and protection for the circuit board 2, the tab 13 and the electronic components 21, reducing the impact of external shocks on the battery.

[0087] In specific applications, the molding compound 5 refers to the adhesive layer (e.g., epoxy resin) that is wrapped around the circuit board 2, the tab 13, and the electronic device 21 through injection molding, thereby forming an insulating protection against the outside world and reducing the impact of external shocks on the electronic device 21 and the circuit board 2.

[0088] like Figure 1 and Figure 2 As shown, in some embodiments of this application, the battery also includes a flexible circuit board 6, which is electrically connected to the circuit board 2. When the molding compound 5 covers the circuit board 2, the tab 13 and the top seal 12, the molding compound 5 has a groove 51 on the side away from the main body 11. Part of the flexible circuit board 6 is covered by the molding compound 5, and part of the flexible circuit board 6 is exposed to the molding compound 5 through the groove 51.

[0089] In this embodiment, the flexible circuit board 6 is adapted to be electrically connected to an external electrical appliance. For example, the flexible circuit board 6 is electrically connected to the motherboard connector in a mobile phone. A portion of the flexible circuit board 6 is covered by a plastic encapsulation 5, thereby forming an insulating protection for the portion of the flexible circuit board 6. A portion of the flexible circuit board 6 is exposed to the plastic encapsulation 5 through a groove 51, thereby enabling the portion of the flexible circuit board 6 within the groove 51 to move relative to each other, thereby improving the reliability of the connection with the external electrical appliance.

[0090] In practical applications, due to tolerances during processing and installation, when external electrical appliances are connected to the flexible circuit board 6, the flexible circuit board 6 can move within the groove 51, thereby improving the reliability of the battery.

[0091] like Figure 5 As shown, in some embodiments of this application, the side end face of the electrical connector 3 facing the battery cell 1 does not extend beyond the side end face of the circuit board 2 facing the battery cell 1.

[0092] In this embodiment, by setting the end face of the electrical connector 3 facing the battery cell 1 to not exceed the end face of the circuit board 2 facing the battery cell 1, it is convenient that when the flexible circuit board 6 is soldered to the circuit board 2, the circuit board 2 and the soldering mounting part are flush, and no hidden dangers such as poor soldering of the flexible circuit board will be caused during soldering.

[0093] like Figure 6 As shown, in some embodiments of the application, the flexible circuit board 6 includes a first electrical connection portion 61, a transition portion 62, and a second electrical connection portion 63 connected in sequence. The end of the first electrical connection portion 61 away from the transition portion 62 is electrically connected to the circuit board 2. The transition portion 62 is bent relative to the first electrical connection portion 61 in a third direction Z, and the transition portion 62 is disposed in the groove 51.

[0094] In this embodiment, the transition portion 62 is bent relative to the first electrical connection portion 61 along the third direction Z and is disposed in the groove 51. The transition portion 62 enables the flexible circuit board 6 to form a certain amount of extension and contraction in the first direction X, thereby facilitating connection with external electrical appliances and improving the stability of the connection.

[0095] In some embodiments of this application, an electrical device is also proposed, including a battery as described in any of the above embodiments, the battery being used to power the electrical device.

[0096] In this embodiment, the battery includes a cell 1, a circuit board 2, and an electrical connector 3. The cell 1 has a first direction X and a second direction Y that are perpendicular to each other. The cell 1 includes a main body 11 and a top sealing portion 12. The top sealing portion 12 is disposed on one side of the main body 11 along the first direction X, and the top sealing portion 12 is bent toward the side of the main body 11 in the first direction X. A tab 13 is provided at one end of the cell 1 along the first direction X, and the tab 13 extends from the top sealing portion 12. The circuit board 2 is disposed on the side of the top sealing portion 12 away from the main body 11. The electrical connector 3 is at least partially disposed on the side of the circuit board 2 along the second direction Y. The end of the tab 13 away from the cell 1 extends along the first direction X to the electrical connector 3 and is connected to the side of the electrical connector 3 opposite to the circuit board 2. Thus, by at least partially disposing of the electrical connector 3 on the side of the circuit board 2 along the second direction Y, In other words, the electrical connector 3 is set in the width direction of the circuit board 2, so that the electrical connector 3 connects the tab 13 to the circuit board 2 in the width direction of the circuit board 2, making reasonable use of the space in the second direction Y of the battery, that is, the width direction; it will not occupy too much space in the first direction X of the cell 1, that is, the height direction, so that the cell 1 can occupy more space in the first direction X, which is conducive to increasing the size of the cell 1 in the first direction X, and is beneficial to increasing the capacity of the cell 1; at the same time, the top seal 12 is bent toward the side of the main body 11 in the first direction X, that is, the top seal 12 is bent relative to the main body 11 along the second direction Y (forming an "L" shaped bending structure), which makes the appearance of the cell 1 flatter and smaller in size, while dispersing external stress (such as battery expansion, mechanical extrusion), reducing the risk of cracking, and improving the sealing effect.

[0097] In specific applications, the electrical equipment can be any of the following: laptop computer, pen input computer, mobile computer, e-book player, portable telephone, portable fax machine, portable copier, portable printer, headset stereo headphones, video recorder, LCD TV, portable cleaner, portable CD player, mini CD, transceiver, electronic notebook, calculator, memory card, portable recorder, radio, backup power supply, motor, automobile, motorcycle, electric bicycle, bicycle, ship, spacecraft, lighting fixtures, toys, game console, clock, power tool, flashlight, camera, household large storage battery and lithium-ion capacitor, etc.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0099] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery, characterized in that, include: Battery cell (1), circuit board (2) and electrical connector (3); The battery cell (1) has intersecting first direction (X) and second direction (Y). The battery cell (1) includes a main body (11) and a top sealing part (12). The top sealing part (12) is disposed on one side of the main body (11) along the first direction (X). The top sealing part (12) is bent toward the side of the main body (11) in the first direction (X). The battery cell (1) has a tab (13) at one end along the first direction (X). The tab (13) extends from the top sealing part (12). The circuit board (2) is located on the side of the top seal (12) away from the main body (11), and the electrical connector (3) is at least partially located on the side of the circuit board (2) along the second direction (Y); the end of the tab (13) away from the battery cell (1) extends along the first direction (X) to the electrical connector (3) and is connected to the side of the electrical connector (3) away from the circuit board (2).

2. The battery according to claim 1, characterized in that, The battery cell (1) also has a third direction (Z), which intersects the first direction (X) and the second direction (Y) respectively; The electrode tab (13) includes a first electrode tab (131), a second electrode tab (132), a third electrode tab (133), and a fourth electrode tab (134); the first electrode tab (131), the second electrode tab (132), the third electrode tab (133), and the fourth electrode tab (134) extend from the top sealing portion (12) and are spaced apart along the third direction (Z); The number of electrical connectors (3) is four. The four electrical connectors (3) are located on the same side of the circuit board (2) along the second direction (Y). The four electrical connectors (3) are spaced apart along the third direction (Z). The first tab (131), the second tab (132), the third tab (133) and the fourth tab (134) are connected to the four electrical connectors (3) one by one.

3. The battery according to claim 1 or 2, characterized in that, The tab (13) includes a first tab section (135) and a second tab section (136). The first tab section (135) extends from the top seal (12) and extends along the second direction (Y). The second tab section (136) is connected to the end of the first tab section (135) away from the top seal (12). The second tab section (136) is bent relative to the first tab section (135) along the first direction (X) and is electrically connected to the side of the electrical connector (3) away from the circuit board (2).

4. The battery according to claim 1 or 2, characterized in that, The electrical connector (3) includes a first connecting part (31) and a second connecting part (32). The first connecting part (31) is disposed between the tab (13) and the circuit board (2) along the second direction (Y). The side of the first connecting part (31) facing away from the circuit board (2) is electrically connected to the tab (13), and the other side of the first connecting part (31) is electrically connected to the circuit board (2). The second connecting part (32) is connected to the end of the first connecting part (31) facing the circuit board (2). The second connecting part (32) extends to the side of the circuit board (2) facing away from the top seal (12) and is electrically connected to the side of the circuit board (2) facing away from the top seal (12).

5. The battery according to claim 4, characterized in that, The circuit board (2) also includes pads, which are located at one end of the circuit board (2) facing the first connecting part (31) and the other end of the circuit board (2) facing the second connecting part (32). Both the first connecting part (31) and the second connecting part (32) are soldered to the pads.

6. The battery according to claim 1, characterized in that, The battery also includes an electronic device (21), which is disposed on the side of the circuit board (2) away from the top seal (12). The electronic device (21) is electrically connected to the circuit board (2). Along the first direction (X), the end face of the electrical connector (3) away from the top seal (12) is not higher than the highest end face of the electronic device (21) away from the top seal (12).

7. The battery according to claim 6, characterized in that, The battery cell (1) also has a third direction (Z), which intersects the first direction (X) and the second direction (Y) respectively; The battery cell (1) further includes a side sealing portion (14), which is disposed on both sides of the main body portion (11) along the third direction (Z) and exposed on the main body portion (11) along the first direction (X); the top sealing portion (12) includes a first top sealing portion (121) and two second top sealing portions (122), the first top sealing portion (121) is bent toward the main body portion (11) on one side in the first direction (X), one end of each second top sealing portion (122) is connected to the first top sealing portion (121), and the other end of each second top sealing portion (122) is bent along the first direction (X) and connected to the adjacent side sealing portion (14) to form a convex angle (15), so that the convex angle (15) is formed on both sides of the main body portion (11) along the third direction (Z), and the circuit board (2) is disposed between the two convex angles (15).

8. The battery according to claim 7, characterized in that, The second top sealing part (122) and the main body part (11) form an included angle α, which satisfies: 30°≤α≤60°.

9. The battery according to claim 7, characterized in that, Along the first direction (X), the end face of the convex angle (15) facing away from the main body (11) is not higher than the highest end face of the electronic device (21) facing away from the main body (11).

10. The battery according to claim 6, characterized in that, The battery also includes a molding compound (5), which is disposed on the side of the circuit board (2) away from the top seal (12) and covers the electronic device (21); Alternatively, the battery may also include a molding compound (5), which is disposed on one side of the main body (11) along the first direction (X) and covers the circuit board (2), the tab (13) and the top seal (12).

11. The battery according to claim 10, characterized in that, The battery also includes a flexible circuit board (6), which is electrically connected to the circuit board (2); When the molding compound (5) covers the circuit board (2), the tab (13) and the top seal (12), the molding compound (5) has a groove (51) on the side away from the main body (11). A portion of the flexible circuit board (6) is covered by the molding compound (5), and a portion of the flexible circuit board (6) is exposed through the groove (51) to the molding compound (5).

12. An electrical appliance, characterized in that, Includes a battery as described in any one of claims 1-11, the battery being used to power the electrical device.

Images