Circuit board assembly for a battery, battery assembly, and electric device

Abstract

This utility model discloses a circuit board assembly for a battery, a battery assembly, and an electrical device, relating to the field of battery technology. The circuit board assembly includes a circuit board and an adapter plate. The circuit board has a first connector; the adapter plate has an electrode connection portion for connecting battery electrodes, and the adapter plate also has a second connector. The first and second connectors are detachably coupled and have a conductive connection state and a deconductive disconnection state. By providing a detachably connected circuit board and adapter plate, the circuit board and adapter plate can be separated, eliminating the need to disassemble the circuit board during battery installation and removal, replacing the circuit board when the battery is damaged, and replacing the battery when the circuit board is damaged, thus improving the maintainability of the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a circuit board assembly for a battery, a battery assembly, and an electrical device. Background Technology

[0002] In existing technologies, battery packs typically consist of batteries and circuit boards. The circuit board protects the batteries from fire or explosion caused by overcharging, over-discharging, or other abnormal conditions, ensuring the safety of the battery pack. Nickel tabs on the circuit board are directly connected to the battery terminals via spot welding. When the circuit board fails, it is difficult to disassemble or replace because it is fixed to the battery terminals by spot welding. Once the circuit board is removed, the battery terminals or nickel tabs cannot be reassembled by spot welding, leading to difficult and costly repairs. Therefore, in most cases, the entire battery pack needs to be scrapped, which not only increases production costs but also raises after-sales maintenance expenses, resulting in significant resource waste.

[0003] Therefore, there is room for improvement in the circuit board. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the first aspect of the present invention aims to provide a circuit board assembly for a battery, wherein the circuit board assembly, by providing a detachably connected circuit board and an adapter plate, allows the circuit board and adapter plate to be disassembled and separated. This eliminates the need to disassemble the circuit board during battery installation and removal, eliminates the need to replace the circuit board when the battery is damaged and replace it, and eliminates the need to replace the battery when the circuit board is damaged, thus improving the maintainability of the battery pack.

[0005] The second aspect of this utility model is to provide a battery having the above-mentioned circuit board assembly.

[0006] The purpose of the third aspect of this utility model is to provide an electrical device having the aforementioned battery.

[0007] A circuit board assembly for a battery according to a first aspect of the present invention includes: a circuit board and an adapter board, wherein the circuit board is provided with a first connector; the adapter board is provided with an electrode connection portion for connecting battery electrodes, and the adapter board is also provided with a second connector; wherein the first connector and the second connector are detachably coupled and have a conductive connection state and a deconductive disconnection state.

[0008] According to the present invention, a circuit board assembly for a battery is provided, by setting a detachably connected circuit board and an adapter plate, so that the circuit board and the adapter plate can be detached and separated. When the battery is installed or removed, the circuit board does not need to be removed; when the battery is damaged and replaced, the circuit board does not need to be replaced; and when the circuit board is damaged, the battery does not need to be replaced, thereby improving the maintainability of the battery pack.

[0009] According to some optional embodiments of the present invention, in the connected state, the first connector and the second connector are snap-fitted or plugged into each other.

[0010] In some optional embodiments, one of the first connector and the second connector is a female connector and the other is a male connector; the female connector includes: a female base plate having a female end face; a boss disposed on the side of the female base plate opposite to the female end face; a female contact piece, a portion of which is located on the outer peripheral surface of the boss and a portion on the female end face, for electrical connection with one of the circuit board and the adapter plate; the male connector includes: a male base plate having a male end face; a convex frame disposed on the side of the male base plate opposite to the male end face; a male contact piece, a portion of which is located on the inner peripheral surface of the convex frame and a portion on the male end face, for electrical connection with the other of the circuit board and the adapter plate; in the connected state, the boss is inserted into the convex frame, and the female contact piece contacts the male contact piece.

[0011] Further optionally, the female connector further includes: a female outer frame, the female outer frame being disposed on the side of the female base plate opposite to the female end face, the female outer frame surrounding the outside of the boss, and an annular groove being formed between the female outer frame and the boss; in the connected state, the boss is inserted into the annular groove.

[0012] Specifically, optionally, a portion of the female contact piece is located on the inner circumferential surface of the female outer frame; a portion of the male contact piece is located on the outer circumferential surface of the convex frame; in the connected state, the female contact piece on the outer circumferential surface of the convex frame contacts the male contact piece on the inner circumferential surface of the convex frame, and the female contact piece on the inner circumferential surface of the female outer frame contacts the male contact piece on the outer circumferential surface of the convex frame.

[0013] In some alternative embodiments, the circuit board and the adapter plate are stacked along the thickness direction of the adapter plate; the electrode connection portion and the second connector are located on opposite sides of the thickness direction of the adapter plate; the first connector is located on the side of the circuit board facing the adapter plate.

[0014] Further optionally, the circuit board includes: a circuit board substrate, the first connector being disposed on the circuit board substrate; an extension plate, one end of which is connected to the circuit board substrate, and the extension plate being provided with an output connector for connecting to an external electronic device.

[0015] According to some alternative embodiments, the adapter board is a flexible circuit board or a rigid circuit board.

[0016] According to some alternative embodiments, the circuit board is provided with two first connectors; the adapter board is provided with two second connectors and two electrode connection parts, and the first connectors, second connectors and electrode connection parts are arranged in a one-to-one correspondence.

[0017] Specifically, the electrode connection portion is a metal sheet for welding to the electrode.

[0018] A battery assembly according to a second aspect of the present invention includes: a battery cell and a circuit board assembly for a battery according to a first aspect of the present invention; the battery includes electrodes, and the electrodes and the electrode connection portion are electrically connected.

[0019] The electrical equipment according to a third aspect of the present invention includes a battery assembly according to a second aspect of the present invention.

[0020] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram showing the cooperation between the circuit board assembly and the battery in some embodiments of this utility model;

[0023] Figure 2 This is a schematic diagram of the circuit board assembly in some embodiments of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of one side of the circuit board in some embodiments of the present invention;

[0025] Figure 4 This is a schematic diagram of the other side of the circuit board in some embodiments of this utility model;

[0026] Figure 5 This is a schematic diagram of the female connector structure in some embodiments of this utility model;

[0027] Figure 6 This is a schematic diagram showing the positions of the female base plate and the female outer frame in some embodiments of the present invention.

[0028] Figure 7 This is a schematic diagram of the male connector structure in some embodiments of this utility model;

[0029] Figure 8 This is a schematic diagram showing the positions of the male connector base plate and the convex frame in some embodiments of the present invention;

[0030] Figure 9 for Figure 2 A magnified view of a portion of point A in the middle;

[0031] Figure 10 This is a schematic diagram of one side structure of the adapter plate in some embodiments of this utility model;

[0032] Figure 11 This is a schematic diagram of the other side of the adapter plate in some embodiments of this utility model.

[0033] Figure label:

[0034] Circuit board assembly 100

[0035] Circuit board 10, circuit board substrate 12, extension board 14, adapter board 30, first connector 40, electronic component 50, output connector 60, second connector 70, electrode connection part 80, female connector 91, female base plate 911, boss 912, female contact piece 913, female outer frame 914, annular groove 915, male connector 92, male base plate 921, boss 922, male contact piece 923.

[0036] Battery 200, electrode 201. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown 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 utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the terms "thickness," "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0041] The following is for reference. Figures 1-11 A circuit board assembly 100 for a battery is described according to a first aspect embodiment of the present invention.

[0042] like Figure 1 As shown, the circuit board assembly 100 according to an embodiment of the present utility model includes: a circuit board 10 and an adapter board 30.

[0043] like Figures 1-4 As shown, the circuit board 10 is provided with a first connector 40 for detachable connection with the second connector 70 on the battery adapter board 30. The adapter board 30 is also provided with an electrode connection part 80 for direct connection to the electrode 201 of the battery 200 to ensure smooth current flow.

[0044] Circuit board 10 is responsible for connecting external electronic devices. Optionally, circuit board 10 is provided with an output connector 60 to facilitate the establishment of physical and electrical connections with external electronic devices.

[0045] In addition, the circuit board 10 also has a first connector 40 that matches the second connector 70 on the adapter board 30, establishing a power transmission path between different components within the circuit board assembly 100.

[0046] On the other hand, the adapter plate 30 is directly connected to the electrode 201 of the battery 200, ensuring that the current can flow smoothly from the battery 200 to other external components, and can flow in reverse from external components to the battery 200, ensuring that the battery 200 is stable and reliable during use and charging.

[0047] Furthermore, the adapter board 30 also has a second connector 70, which corresponds to the first connector 40 on the circuit board 10. Through a detachable mating mechanism, convenient connection and disconnection between the circuit board 10 and the adapter board 30 can be achieved. Optionally, the adapter board 30 can be a flexible printed circuit board or a rigid board.

[0048] When the first connector 40 and the second connector 70 are in the conductive state, current can flow smoothly between the battery 200 and other external electronic devices, thereby achieving normal power supply or charging functions. When the circuit board 10 malfunctions or fails, the first connector 40 and the second connector 70 can be disconnected to de-conduct, allowing for replacement of the faulty circuit board. This maintenance eliminates the need to repair the battery 200 itself; only the faulty circuit board 10 needs to be replaced. Compared to replacing the entire battery, replacing only the circuit board 10 reduces maintenance costs and improves product economics.

[0049] In some optional embodiments, the first connector 40 and the second connector 70 are pluggable connectors. One of the first connector 40 and the second connector 70 is a male connector, and the other is a female connector corresponding to the male connector. The connection and disconnection of the circuit board and the adapter board can be achieved through simple insertion and removal operations. This also simplifies the operation process, reduces installation and disassembly time, improves maintenance efficiency, and makes troubleshooting and component replacement more convenient and efficient.

[0050] Optionally, the first connector 40 and the second connector 70 are connected via a spring clip connector. The first connector 40 and the second connector 70 are metal contacts, such as wires or conductive sheets. Specifically, the first connector 40 and the second connector 70 interact through the spring clip connector to form a complete circuit path. When a connection needs to be established, the first connector 40 and the second connector 70 are inserted into the spring clip connector. The spring clip connector uses its internal spring force to tightly clamp the metal parts of the first connector 40 and the second connector 70, thereby ensuring electrical contact. When it is necessary to disconnect the connection, the pressure on the metal contacts can be released by pressing or other operations, allowing the first connector 40 and / or the second connector 70 to be easily removed from the spring clip connector.

[0051] Optionally, the first connector 40 and the second connector 70 are board-to-board connectors. This also enables reliable circuit connection and convenient disconnection.

[0052] In summary, the circuit board assembly 100 of this embodiment enables the disassembly and separation of the circuit board 10 and the battery 200. During battery manufacturing, if the circuit board 10 malfunctions, it can be disassembled and replaced without rendering the battery unusable, thus reducing the production scrap rate. In after-sales service, the faulty circuit board 10 can also be disassembled and replaced with a good one, effectively reducing repair costs.

[0053] It should be noted that the disassembly and separation of circuit board 10 and battery 200 is generally a non-destructive or minimally damaging separation. For example, if circuit board 10 is damaged, after disassembling circuit board 10 and adapter board 30, a new, high-performance circuit board 10 can be installed and reassembled with the original adapter board 30 to obtain a usable battery assembly. This allows for the reuse of adapter board 30 and the battery connected to it. Similarly, if battery 200 or adapter board 30 is damaged, this non-destructive or minimally damaging disassembly and separation can also allow for the reuse of circuit board 10, which will not be elaborated further here.

[0054] According to some optional embodiments of the present invention, in the connected state, the first connector 40 and the second connector 70 are engaged or plugged into each other.

[0055] The assembly process is simplified by using snap-fit ​​or plug-in connections, while ensuring the reliability of electrical system connections.

[0056] In some alternative technical solutions, the first connector 40 and the second connector 70 are snap-fit ​​connectors, which are connected by snap-fitting.

[0057] In some alternative technical solutions, one of the first connector 40 and the second connector 70 is a plug, and the other is a socket; the plug includes pins, and the socket has corresponding holes for the pins. The first connector 40 and the second connector 70 achieve electrical connection through the combination of the plug and the socket. The connection and disconnection of the first connector 40 and the second connector 70 using the plug and the socket facilitates system maintenance, upgrades, and troubleshooting.

[0058] According to some alternative embodiments, one of the first connector 40 and the second connector 70 is a female connector 91, and the other is a male connector 92. For example... Figures 5-8As shown, the female connector 91 includes a female base plate 911, a boss 912, and a female contact piece 913. The female base plate 911 has a female end face. The boss 912 is located on the side of the female base plate 911 opposite to the female end face. A portion of the female contact piece 913 is located on the outer peripheral surface of the boss 912, and a portion is located on the female end face, for electrical connection with one of the circuit board 10 and the adapter plate 30. The male connector 92 includes a male base plate 921, a protrusion frame 922, and a male contact piece 923. The male base plate 921 has a male end face. The protrusion frame 922 is disposed on the side of the male base plate 921 opposite to the male end face. A portion of the male contact piece 923 is located on the inner circumferential surface of the protrusion frame 922, and a portion is located on the male end face, for electrical connection with another of the circuit board 10 and the adapter board 30. In the connected state, the protrusion 912 is inserted into the protrusion frame 922, and the female contact piece 913 contacts the male contact piece 923.

[0059] The mechanical positioning function is achieved through the cooperation of the boss 912 and the boss frame 922, which also provides a guiding function during the insertion process, facilitating installation. At the same time, the nested structure of the boss 912 and the boss frame 922 enhances the bonding strength between the connectors, preventing loosening or separation caused by vibration, impact, or other factors, thereby improving the overall stability and reliability of the connection.

[0060] In addition, the connector adopts a split male and female structure, which facilitates modular assembly and replacement. When maintenance or replacement of parts is required, the female connector 91 and the male connector 92 can be separated for disassembly.

[0061] In some such Figure 9 In the embodiment shown, the first connector 40 is a female connector 91, and the second connector 70 is a male connector 92.

[0062] Further, optionally, combined Figure 5 and Figure 6 The female connector 91 also includes a female outer frame 914. The female outer frame 914 is located on the side of the female base plate 911 opposite to the female end face, and surrounds the outside of the boss 912, forming an annular groove 915 between the female outer frame 914 and the boss 912. In the connected state, the boss 922 is inserted into the annular groove 915.

[0063] First, the engagement between the annular groove 915 and the convex frame 922 has a certain guiding function, which can correct the position during insertion and removal, reduce the difficulty of manual operation, and improve assembly efficiency.

[0064] Secondly, after the convex frame 922 is inserted into the annular groove 915, it is wrapped and limited by the surrounding female outer frame 914, which can prevent the connector from lateral shaking or shifting in the plugged state and enhance the connection stability.

[0065] Furthermore, the annular groove 915 structure formed by the outer frame 914 of the female connector also plays a certain role in shielding and protection, which can reduce the risk of external dust and foreign objects entering the connection area, and can also block electromagnetic interference to a certain extent, thereby improving the working stability of the connector.

[0066] Optionally, a portion of the female contact piece 913 is located on the inner circumferential surface of the female outer frame 914. A portion of the male contact piece 923 is located on the outer circumferential surface of the convex frame 922. In the connected state, the female contact piece 913 on the outer circumferential surface of the convex frame 912 contacts the male contact piece 923 on the inner circumferential surface of the convex frame 922, and the female contact piece 913 on the inner circumferential surface of the female outer frame 914 contacts the male contact piece 923 on the outer circumferential surface of the convex frame 922.

[0067] In this embodiment, by arranging contact pieces on different contact surfaces, multiple current channels are formed between the male and female connectors, reducing contact resistance and improving the stability of current transmission, which is especially suitable for high-power or high-frequency signal transmission scenarios.

[0068] Meanwhile, the contact piece in this embodiment is a multi-point contact. This disperses the pressure at a single point to a certain extent, reducing the risk of contact failure due to localized wear or oxidation.

[0069] like Figure 2 As shown, in some optional embodiments, the circuit board 10 and the adapter plate 30 are stacked along the thickness direction of the adapter plate 30; the electrode connection portion 80 and the second connector 70 are located on both sides of the thickness direction of the adapter plate 30; the first connector 40 is located on the side of the circuit board 10 facing the adapter plate 30.

[0070] The electrode connection portion 80 is located on one side of the adapter plate 30 and is used to directly connect to the electrode 201 of the battery 200, ensuring that current can be efficiently transmitted from the battery 200 to the adapter plate 30. The second connector 70 is located on the other side of the adapter plate 30 and mates with the first connector 40 on the circuit board 10 to realize the electrical connection between the circuit board 10 and the adapter plate 30. By placing the electrode connection portion 80 and the second connector 70 on opposite sides of the adapter plate 30, interference between them is avoided to a certain extent, facilitating assembly and maintenance. The first connector 40 is located on the side of the circuit board 10 facing the adapter plate 30, corresponding to the position of the second connector 70, and the two can cooperate in a stacked state.

[0071] In some alternative embodiments, such as Figures 1-4 As shown, the circuit board 10 includes a circuit board substrate 12 and an extension plate 14, with a first connector 40 disposed on the circuit board substrate 12. One end of the extension plate 14 is connected to the circuit board substrate 12, and the extension plate 14 is provided with an output connector 60 for connecting to an external electronic device.

[0072] Here, the extension plate 14 is electrically connected to the circuit board substrate 12.

[0073] In some optional embodiments, the extension plate 14 is fixedly connected to the circuit board substrate 12. The fixed connection method includes, but is not limited to, soldering. This fixed connection enables a robust mechanical and electrical connection, improving the overall stability and reliability of the system.

[0074] Alternatively, the extension board 14 and the circuit board substrate 12 can be detachably connected. Detachable connection methods include, but are not limited to, snap-fit ​​connections, plug-in connections, and soldering. This detachable connection allows for easy assembly and disassembly of the extension board 14 and the circuit board substrate 12. On the one hand, it simplifies the steps for maintenance and component replacement; on the other hand, it improves the flexibility and adaptability of the circuit board assembly 100. The extension board 14 and the circuit board substrate 12 can be modularly produced to meet different layout requirements, allowing for flexible configuration adjustments based on actual application scenarios. Furthermore, this design enables rapid adaptation to batteries or external devices of different sizes and shapes without redesigning the entire circuit board assembly, thereby improving production flexibility and efficiency while reducing manufacturing costs. Therefore, this modular and detachable design enhances the system's versatility and scalability.

[0075] The output connector 60 is electrically connected to the circuit board substrate 12 through the conductive lines inside the extension plate 14, ensuring the continuity and stability of signal transmission.

[0076] Furthermore, the shape and size of the extension plate 14 can be optimized according to the location and spatial layout of external electronic devices to better adapt to different installation environments and help optimize the spatial layout.

[0077] Furthermore, the shape and size of the circuit board substrate 12 can be set according to the specific structure of the battery 200 to ensure that it matches the actual length of the battery 200, thereby improving the compatibility and assembly efficiency of the circuit board assembly 100.

[0078] In some specific embodiments, the circuit board substrate 12 is a rigid circuit board, and the extension plate 14 is a flexible circuit board.

[0079] As is known, a rigid circuit board is a circuit board made of a robust substrate. Rigid circuit boards possess good mechanical strength and stable electrical performance. Therefore, the use of a rigid circuit board as the circuit board substrate 12 provides sufficient strength to ensure the stable installation of the first connector 40. Simultaneously, the stable structure of the rigid circuit board can also, to a certain extent, prevent component damage caused by external impacts or vibrations, ensuring the reliability of the system.

[0080] Alternatively, the rigid circuit board can be a rigid circuit board made of glass fiber reinforced epoxy resin as the substrate, a rigid circuit board made of aluminum substrate, a rigid circuit board made of polytetrafluoroethylene as the substrate, etc.

[0081] The extension board 14, employing a flexible circuit board, offers greater flexibility. The flexible circuit board can be bent and folded within a limited space, thereby optimizing wiring paths and reducing cable stress. The output connector 60, located on the extension board 14, can be adjusted according to the specific location of external electronic equipment, making connections more convenient and flexible. Furthermore, the flexible circuit board can adapt to non-planar surfaces, further enhancing its applicability.

[0082] Optionally, the flexible circuit board includes, but is not limited to, a single-layer flexible circuit board, a double-layer flexible circuit board, or a multi-layer flexible circuit board. The specific configuration can be determined according to actual needs, and this application does not impose any restrictions.

[0083] In some further alternative embodiments, such as Figure 2 and Figure 3 As shown, the circuit board 10 is also provided with an electronic component 50 for protecting the battery 200. The electronic component 50 is provided on the circuit board substrate 12 and is located on the side of the circuit board substrate 12 away from the adapter plate 30.

[0084] After the circuit board assembly 100 and battery 200 are assembled, the electronic component 50 faces away from the battery 200, providing more space for heat dissipation and ensuring its reliability. This arrangement also facilitates maintenance: technicians can inspect the electronic component 50 without interfering with the adapter board 30. This approach improves operational convenience and enhances the maintainability and efficiency of the overall system.

[0085] Electronic component 50 may be a voltage protection IC or other components used to monitor current and voltage.

[0086] In some further alternative embodiments, the adapter board 30 is a flexible circuit board or a rigid circuit board.

[0087] When the adapter board 30 uses a flexible circuit board, it can better adapt to the structure of the battery 200, making installation more convenient and flexible. Optionally, the flexible circuit board includes, but is not limited to, a single-layer flexible circuit board, a double-layer flexible circuit board, or a multi-layer flexible circuit board, which can be set according to actual needs, and this application does not impose any restrictions.

[0088] When the adapter board 30 uses a rigid circuit board, it has high mechanical strength and stability, ensuring the stability and reliability of the connection with the battery 200. Optionally, the rigid circuit board can be a rigid circuit board made of glass fiber reinforced epoxy resin as the substrate, a rigid circuit board made of aluminum substrate, a rigid circuit board made of polytetrafluoroethylene as the substrate, etc.

[0089] According to some optional embodiments of the present invention, such as Figure 2 and Figure 4 As shown, the circuit board 10 has two first connectors 40. Combined with... Figure 10 and Figure 11 The adapter plate 30 is provided with two second connectors 70 and two electrode connection parts 80, and the first connector 40, the second connector 70 and the electrode connection part 80 are arranged in a one-to-one correspondence.

[0090] In the above technical solution, by setting a dual connector layout, the needs of higher power circuits can be met, and the stability and safety of the circuit board assembly 100 can be improved.

[0091] In some further optional embodiments, the electrode connection portion 80 is a metal sheet for welding to the electrode 201. The metal sheet can conduct current, enabling the transfer of electrical energy from the electrode 201 to the outside of the battery, and the sheet-like structure is easy to connect to the electrode 201 while protruding outside the battery casing, and is suitable for welding to the adapter plate 30.

[0092] It is important to understand that nickel sheets are generally used for the metal contacts. Nickel sheets have excellent conductivity and corrosion resistance, which can reduce contact resistance and improve current transmission efficiency. Therefore, using nickel sheets for the electrode connection part 80 helps to improve the energy conversion efficiency of the circuit board assembly 100, enhance its long-term reliability, and help the battery maintain stable electrical performance.

[0093] Furthermore, nickel sheets possess high mechanical strength and good ductility, making them resistant to breakage or deformation under external stress, thus ensuring the strength and durability of the weld joint. The application of nickel sheets improves the stability of the weld joint, reduces maintenance frequency, and lowers operating costs.

[0094] In addition, nickel has a relatively low coefficient of thermal expansion, meaning that in environments with large temperature variations, nickel sheets are less prone to loosening or cracking due to thermal expansion and contraction, further enhancing the reliability of the connection. Simultaneously, the welding process ensures the strength and stability of the connection, reducing the risk of poor contact due to vibration or aging, thereby improving the battery's reliability and lifespan.

[0095] A battery assembly according to a second aspect of the present invention includes a battery 200 and a circuit board assembly 100 for the battery according to a first aspect of the present invention. The battery 200 includes an electrode 201, and the electrode 201 and an electrode connection portion 80 are electrically connected.

[0096] By employing the improved circuit board assembly 100, a detachable connection is achieved between the circuit board 10 and the battery 200. When maintenance or replacement of the circuit board 10 is required, it is not necessary to replace the entire battery cell. Only the faulty circuit board needs to be removed and replaced individually, reducing waste and thus lowering costs.

[0097] The batteries in this application include lithium-ion batteries, etc.

[0098] The electrical equipment according to the third aspect of the present invention includes the battery according to the second aspect of the present invention.

[0099] By using the aforementioned battery components, the reliability of electrical equipment can be ensured, while reducing maintenance costs.

[0100] The following is for reference. Figure 1 - Figure 11 The circuit board assembly 100 according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0101] Reference Figure 1 The circuit board assembly 100 includes a circuit board 10 and an adapter board 30.

[0102] Reference Figure 2 The circuit board 10 and the adapter board 30 are stacked along the thickness direction of the adapter board 30.

[0103] Reference Figure 3 and Figure 4 The circuit board 10 includes a circuit board substrate 12 and an extension board 14.

[0104] Reference Figure 2 The circuit board substrate 12 is provided with a first connector 40 and electronic components 50.

[0105] The first connector 40 is located on the side of the circuit board 10 facing the adapter plate 30. The electronic component 50 is located on the side of the circuit board substrate 12 away from the adapter plate 30.

[0106] One end of the extension plate 14 is connected to the circuit board substrate 12, and the extension plate 14 is provided with an output connector 60 for connecting external electronic devices.

[0107] Reference Figure 10 and Figure 11The adapter plate 30 has a second connector 70 and an electrode connection part 80 on each side. The electrode connection part 80 is used to connect the electrode 201 of the battery 200.

[0108] The second connector 70 and the first connector 40 are detachably coupled and have a connected state and a disconnected state.

[0109] In the connected state, the first connector 40 and the second connector 70 are plugged in and connected.

[0110] There are two of each of the first connector 40, the second connector 70, and the electrode connection part 80. The first connector 40, the second connector 70, and the electrode 201 connector are arranged in a one-to-one correspondence.

[0111] Reference Figures 5-6 The first connector 40 is a female connector 91, and the second connector 70 is a male connector 92.

[0112] The female connector 91 includes a female base plate 911, a boss 912, a female contact piece 913, and a female outer frame 914. The female base plate 911 has a female end face. The boss 912 is located on the side of the female base plate 911 opposite to the female end face. A portion of the female contact piece 913 is located on the outer peripheral surface of the boss 912, and another portion is located on the female end face, for electrical connection with one of the circuit board 10 and the adapter board 30. A further portion of the female contact piece 913 is located on the inner peripheral surface of the female outer frame 914.

[0113] The outer frame 914 of the female seat is located on the side of the female seat base plate 911 away from the end face of the female seat. The outer frame 914 of the female seat surrounds the outside of the boss 912, and an annular groove 915 is formed between the outer frame 914 of the female seat and the boss 912.

[0114] Reference Figures 7-8 The male connector 92 includes a male base plate 921, a protruding frame 922, and a male contact piece 923. The male base plate 921 has a male end face.

[0115] The protruding frame 922 is located on the side of the base plate 921 opposite to the end face of the base plate.

[0116] A portion of the male connector contact 923 is located on the inner circumferential surface of the protrusion 922, and another portion is located on the male connector end face, for electrical connection with another of the circuit boards 10 and the adapter board 30. A further portion of the male connector contact 923 is located on the outer circumferential surface of the protrusion 922.

[0117] Reference Figure 9In the connected state, the boss 912 is inserted into the boss frame 922, and the boss frame 922 is inserted into the annular groove 915. The female contact piece 913 on the outer circumferential surface of the boss 912 contacts the male contact piece 923 on the inner circumferential surface of the boss frame 922, and the female contact piece 913 on the inner circumferential surface of the female outer frame 914 contacts the male contact piece 923 on the outer circumferential surface of the boss frame 922.

[0118] The electrode connection part 80 is a nickel sheet for welding with the electrode 201.

[0119] Other components of the circuit board assembly 100 according to embodiments of the present invention, such as battery components and electrical devices, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0120] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. 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.

[0121] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A circuit board assembly for a battery, characterized in that, include: A circuit board, wherein a first connector is provided on the circuit board; An adapter plate is provided with an electrode connection portion for connecting battery electrodes, and a second connector is also provided on the adapter plate. The first connector and the second connector are detachably coupled and have a conductive connection state and a deconductive disconnection state.

2. The circuit board assembly for a battery according to claim 1, characterized in that, In the connected state, the first connector and the second connector are fastened together or plugged into each other.

3. The circuit board assembly for a battery according to claim 1, characterized in that, One of the first connector and the second connector is a female connector, and the other is a male connector; The female connector includes: A female base plate, wherein the female base plate has a female end face; A boss is provided on the side of the base plate of the female seat that is opposite to the end face of the female seat; A female contact piece, a portion of which is located on the outer peripheral surface of the boss and a portion of which is located on the end face of the female connector, for electrical connection with one of the circuit board and the adapter plate; The male connector includes: A male seat base plate, wherein the male seat base plate has a male seat end face; A convex frame is provided on the side of the male seat base plate opposite to the male seat end face; A male connector contact piece, a portion of which is located on the inner circumferential surface of the convex frame and a portion of which is located on the end face of the male connector, for electrical connection with another of the circuit board and the adapter plate; In the connected state, the boss is inserted into the convex frame, and the female contact piece contacts the male contact piece.

4. The circuit board assembly for a battery according to claim 3, characterized in that, The female connector also includes: The female base outer frame is located on the side of the female base base plate opposite to the end face of the female base. The female base outer frame surrounds the outside of the boss, and an annular groove is formed between the female base outer frame and the boss. In the connected state, the convex frame is inserted into the annular groove.

5. The circuit board assembly for a battery according to claim 4, characterized in that, A portion of the female contact piece is located on the inner circumferential surface of the female outer frame; A portion of the male contact piece is located on the outer peripheral surface of the convex frame; In the connected state, the female contact piece on the outer peripheral surface of the boss contacts the male contact piece on the inner peripheral surface of the convex frame, and the female contact piece on the inner peripheral surface of the female outer frame contacts the male contact piece on the outer peripheral surface of the convex frame.

6. The circuit board assembly for a battery according to claim 1, characterized in that, The circuit board and the adapter board are stacked along the thickness direction of the adapter board; The electrode connection portion and the second connector are located on opposite sides of the thickness direction of the adapter plate; The first connector is located on the side of the circuit board facing the adapter plate.

7. The circuit board assembly for a battery according to claim 1, characterized in that, The circuit board includes: A circuit board substrate, wherein the first connector is disposed on the circuit board substrate; An extension plate, one end of which is connected to the circuit board substrate, is provided with an output connector for connecting to an external electronic device.

8. The circuit board assembly for a battery according to any one of claims 1-7, characterized in that, The adapter board is a flexible circuit board or a rigid circuit board.

9. The circuit board assembly for a battery according to any one of claims 1-7, characterized in that, The circuit board is provided with two of the first connectors; The adapter board is provided with two second connectors and two electrode connection parts, and the first connector, the second connector, and the electrode connection parts are arranged in a one-to-one correspondence.

10. The circuit board assembly for a battery according to any one of claims 1-7, characterized in that, The electrode connection part is a metal sheet for welding to the electrode.

11. A battery assembly, characterized in that, include: A battery, including electrodes; Circuit board assembly for a battery according to any one of claims 1-10; The electrode and the electrode connection portion are electrically connected.

12. An electrical appliance, characterized in that, Includes the battery assembly described in claim 11.

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