Connecting assembly, battery device and electric equipment

Abstract

The utility model discloses a connecting assembly, a battery device and electric equipment. The battery device comprises a battery monomer, an output pole piece, an electric connecting piece, a connecting piece and an insulating sleeve, the battery monomer comprises an electrode terminal, and the output pole piece is connected to the electrode terminal. The electric connecting sheet is used for connecting a circuit board, and part of the electric connecting sheet and the output pole piece are stacked in the thickness direction. The connecting piece comprises a connecting rod and a limiting part, and the connecting rod sequentially penetrates through the output pole piece and the electric connecting piece. The limiting part is connected to one end of the connecting rod and arranged on the side, away from the output pole piece, of the electric connecting piece. The insulating sleeve comprises an insulating part arranged on the limiting part and a connecting part connected to the electric connecting piece, and the connecting part is connected to the insulating part. According to the connection assembly, the battery device and the electric equipment, the risk of short circuit between electrical components can be reduced, and the operation stability of the battery device is improved.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular to a connection component, a battery device, and an electrical appliance. Background Technology

[0002] Batteries are widely used in various electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy airplanes, electric toy ships, power tools, and energy storage systems, etc.

[0003] Currently, improving the protection performance of batteries, reducing the risk of short circuits between components in the battery, and improving the stability of battery operation are also research issues in this field. Utility Model Content

[0004] In view of the above problems, this application provides a connection component, a battery device, and an electrical device, which can reduce the risk of short circuits between components in the battery and improve the stability of the battery device operation.

[0005] In a first aspect, this application provides a battery device, including a battery cell, an output electrode, an electrical connection piece, a connector, and an insulating sleeve. The battery cell includes electrode terminals, and the output electrode is connected to the electrode terminals. The electrical connection piece is used to connect to a circuit board, and a portion of the electrical connection piece is stacked with the output electrode along its thickness direction. The connector includes a connecting rod and a limiting portion, the connecting rod passing sequentially through the output electrode and the electrical connection piece. The limiting portion is connected to one end of the connecting rod and is located on the side of the electrical connection piece opposite to the output electrode. The insulating sleeve includes an insulating portion located at the limiting portion and a connecting portion connected to the electrical connection piece, with the connecting portion connected to the insulating portion.

[0006] In the technical solution of this application embodiment, electrode terminals are provided in the battery cell to exchange and transmit electrical energy between the battery cell and external devices. Output electrode plates are connected to the electrode terminals, and electrical connectors are connected to the circuit board to facilitate the transmission of the battery cell's operating status information to the circuit board. This allows the circuit board to monitor the battery cell's operating status in real time, promptly issuing warnings or performing power-off operations when abnormalities occur, thereby improving the stability and controllability of the battery cell's operation. A connector is used to connect the electrical connector and the output electrode plate. An insulating part is provided on the outside of the connector to increase the creepage distance between the connector and other electrical connection components, reducing the risk of short circuits between the connector and other components. Furthermore, the connection between the connector and the electrical connector improves the connection stability between the insulating sleeve and the connector, reduces the risk of the insulating sleeve detaching from the connector, and improves the stability of the battery cell's operation.

[0007] In some embodiments, the electrical connector includes a first portion stacked with the output electrode and a second portion connected to the first portion. A connector connects the first portion and the output electrode, and a connecting part is connected to the second portion. In the above structure, the connecting part is connected to the portion of the electrical connector that is not connected to the output electrode, which can increase the contact area between the connecting part and the electrical connector, improve the connection strength, thereby further reducing the risk of the insulating sleeve and the connector separating, and improving the insulation protection performance of the connector.

[0008] In some embodiments, the second portion is bent relative to the first portion toward the limiting portion to be angled toward the first portion. The above structure can accommodate structures where the circuit board and electrode terminals deviate in the height direction, improving connection strength and stability.

[0009] In some embodiments, the connecting portion includes a connecting body and a reinforcing portion. The connecting body is stacked on the surface of the electrical connecting piece facing the limiting portion. One end of the reinforcing portion is connected to the connecting body, and the other end of the reinforcing portion extends to the surface of the electrical connecting piece opposite to the connecting body. In the above structure, by providing the connecting body to cover the surface of the electrical connecting piece, a stable connection is formed with the electrical connecting piece, improving the connection strength between the connecting portion and the electrical connecting piece, while simultaneously providing insulation protection for the electrical connecting piece and reducing the risk of short circuits between the electrical connecting piece and other components. The reinforcing portion extending to the other side of the electrical connecting piece improves the connection strength while enhancing the insulation protection performance.

[0010] In some embodiments, there are two reinforcing portions, each located on opposite sides of the electrical connector. The reinforcing portions and the connecting body encircle the second portion along the circumference of the electrical connector. This structure further reduces the risk of the insulation portion detaching from the connector.

[0011] In some embodiments, the insulating portion includes an insulating body and an insulating connecting piece. The insulating body covers the limiting portion, and the insulating connecting piece is disposed on the surface of the first portion facing away from the output electrode, and the insulating connecting piece is connected to the insulating body. In the above structure, the insulating body completely covers the limiting portion, providing insulation protection for the exposed portion of the connector, reducing the risk of short circuits in the connector. The extension covers the electrical connecting piece and its periphery, providing insulation for the electrical connecting piece and surrounding live parts, further improving insulation protection performance.

[0012] In some embodiments, the insulating sleeve further includes an extension that extends circumferentially along the insulating connecting piece to the periphery of the electrical connecting piece.

[0013] In some embodiments, the insulating connecting piece is interconnected with the connecting body, and / or the extension is interconnected with the reinforcing part. The above structure improves the structural connection strength between the extension and the reinforcing part, and enhances the structural stability of the entire insulating sleeve.

[0014] In some embodiments, the insulating part and the connecting part are integrally formed. This structure improves the assembly efficiency of the insulating sleeve and its insulating protective performance.

[0015] Secondly, this application provides an electrical device that includes the battery device described in the first aspect, the battery device being used to provide electrical energy.

[0016] Thirdly, this application provides a connecting assembly for connecting a first connecting piece and a second connecting piece. The connecting assembly includes a connector and an insulating sleeve. The connector includes a connecting rod and a limiting portion, the connecting rod passing sequentially through the first connecting piece and the second connecting piece. The limiting portion is connected to one end of the connecting rod and is located on the side of the first connecting piece opposite to the second connecting piece. The insulating sleeve includes an insulating portion located at the limiting portion and a connecting portion connected to the first connecting piece, the connecting portion being connected to the insulating portion.

[0017] In the above structure, the connector is used to connect the first connecting piece and the second connecting piece. An insulating portion is provided on the outside of the connector, which increases the creepage distance between the connector and other electrical connection components, reducing the risk of short circuits in the connector. Furthermore, the connection between the connecting portion and the electrical connecting piece improves the connection stability between the insulating sleeve and the connector, reducing the risk of the insulating sleeve detaching from the connector.

[0018] In some embodiments, the connecting portion includes a connecting body and a reinforcing portion. The connecting body is stacked on the surface of the first connecting piece facing the limiting portion. One end of the reinforcing portion is connected to the connecting body, and the other end of the reinforcing portion extends to the surface of the first connecting piece opposite to the connecting body. In the above structure, by providing the connecting body to cover the surface of the first connecting piece, a stable connection is formed with the first connecting piece, improving the connection strength between the connecting portion and the first connecting piece, while simultaneously providing insulation protection for the first connecting piece, reducing the risk of short circuits between the first connecting piece and other components. The reinforcing portion extending to the other side of the first connecting piece improves the connection strength while enhancing the insulation protection performance.

[0019] In some embodiments, the insulating portion includes an insulating body, an insulating connecting piece, and an extension. The insulating body covers the limiting portion, and the insulating connecting piece is disposed on the surface of the first connecting piece opposite to the second connecting piece, and the insulating connecting piece is interconnected with the insulating body. The extension extends circumferentially along the insulating connecting piece to the periphery of the first connecting piece. In the above technical solution, the insulating body completely covers the limiting portion, providing insulation protection for the exposed portion of the connector, reducing the risk of short circuits in the connector. The extension covers the first connecting piece and its periphery, providing insulation for the first connecting piece and surrounding live components, further improving insulation protection performance.

[0020] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0021] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0022] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0023] Figure 2 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0024] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application;

[0025] Figure 4 This application provides schematic diagrams of the connectors and insulating sleeves of the battery device according to some embodiments;

[0026] Figure 5 for Figure 2 A magnified structural diagram of part A in the middle;

[0027] Figure 6 This is a schematic diagram of the structure of the insulating sleeve of the battery device provided in some embodiments of this application;

[0028] Figure 7 This is a schematic diagram of the structure of a connection component provided in some embodiments of this application.

[0029] Detailed Explanation of Reference Numerals

[0030] 1. Vehicle; 2. Battery unit; 3. Controller; 4. Motor; 5. Output electrode; 6. Battery cell; 10. Electrode assembly; 20. Housing; 25. Electrode terminal; 30. End cap; 40. Outer shell; 7. Electrical connector; 9. Circuit board; 8. Connecting assembly; 801. Connector; 802. Insulating sleeve; 803. Connecting rod; 804. Limiting part; 805. Insulating part; 806. Connecting part; 807. First part; 808. Second part; 809. Connecting body; 810. Reinforcing part; 811. Insulating body; 812. Extension part; 813. Insulating connecting piece. Detailed Implementation

[0031] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] 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.

[0036] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0037] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0039] 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, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0041] During battery cell operation, temperature and pressure variations can lead to instability in their operating state. To monitor the battery cell's operating status in real time, a circuit board is typically connected to the battery cell. The circuit board monitors key parameters such as voltage, current, and temperature of the battery cell, issuing alarms, taking cooling measures, or directly cutting off power to adjust the battery cell's state and protect it from damage when abnormalities such as overcharging, over-discharging, or short circuits occur. For a stable connection with the circuit board, electrical connectors are usually used to connect to corresponding components on the circuit board, and output electrodes on the battery cell are connected to the cell's electrode terminals. The electrical connectors and output electrodes are connected via connectors. To improve the insulation performance of the connectors and reduce short circuits, insulating caps can be installed on the connectors, connected to the connectors via an interference fit. However, when the battery pack is subjected to vibration or impact, the insulating caps can easily detach from the connectors, causing short circuits and affecting the operational stability of the battery cells.

[0042] To address the aforementioned problems, this application provides a battery device. Electrode terminals are provided in a single battery cell to facilitate energy exchange and transmission between the cell and external devices. Output electrodes are connected to the electrode terminals, and electrical connectors are connected to a circuit board to transmit the battery cell's operating status information to the circuit board. This allows the circuit board to monitor the battery cell's operating status in real time, promptly issuing warnings or performing power-off operations when abnormalities occur, thus improving the stability and controllability of the battery cell's operation. Connectors are used to connect the electrical connectors and the output electrodes. Specifically, an insulating portion is provided on the outside of the connector, increasing the creepage distance between the connector and other electrical connection components, reducing the risk of short circuits between the connector and other components. Furthermore, the connection between the connector and the electrical connector improves the connection stability between the insulating sleeve and the connector, reducing the risk of the insulating sleeve detaching from the connector, and improving the stability of the battery cell's operation.

[0043] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0044] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0045] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0046] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0047] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0048] In this embodiment of the application, the battery cell can be a secondary battery cell, which refers to a battery cell that can be used again after being discharged by recharging to activate the active materials.

[0049] Battery cells may include, but are not limited to, lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-metal hydride battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc.

[0050] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0051] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0052] In some embodiments, the battery device may be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0053] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery device as an energy storage element. The electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0054] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0055] Figure 1 The diagram shows the structural features of a vehicle provided in some embodiments of this application.

[0056] like Figure 1 As shown, a battery device 2 is installed inside the vehicle 1. The battery device 2 can be located at the bottom, front, or rear of the vehicle 1. The battery device 2 can be used to power the vehicle 1; for example, the battery device 2 can serve as the operating power source for the vehicle 1.

[0057] The vehicle 1 may also include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, for the power needs of the vehicle 1 during starting, navigation and driving.

[0058] In some embodiments of this application, the battery device 2 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0059] Figure 2 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application.

[0060] In the battery device 2, there can be one or more battery cells 6. If there are multiple battery cells 6, they can be connected in series, in parallel, or in a mixed manner. A mixed connection means that multiple battery cells 6 are connected in both series and parallel. Multiple battery cells 6 can be directly connected in series, in parallel, or in a mixed manner to form a whole; of course, multiple battery cells can also be first connected in series, in parallel, or in a mixed manner to form a battery module, and then multiple battery modules can be connected in series, in parallel, or in a mixed manner to form a whole.

[0061] For example, the battery cell 6 may be the smallest unit that makes up the battery device 2.

[0062] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application.

[0063] like Figure 3 As shown, in some embodiments, the battery cell 6 includes a housing 40 and an electrode assembly 10 housed within the housing 40. The electrode assembly 10 includes a positive electrode and a negative electrode. During the charging and discharging process of the battery cell 6, active ions (e.g., lithium ions) repeatedly insert and extract between the positive and negative electrodes. Optionally, the electrode assembly 10 also includes a separator disposed between the positive and negative electrodes, which can reduce the risk of short circuit between the positive and negative electrodes while allowing active ions to pass through. The housing 40 is used to encapsulate the electrode assembly 10 and components such as the electrolyte. The housing 40 can be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing 40), or an aluminum-plastic film, etc.

[0064] In some embodiments, the housing 40 includes a housing 20 and an end cap 30, the housing 20 having an opening and the end cap 30 for closing the opening.

[0065] In some embodiments, the battery cell 6 further includes an electrolyte housed within the casing 40. The electrolyte acts as a conductor of ions between the positive and negative electrodes. The electrolyte can be liquid, gel-like, or solid.

[0066] In some embodiments, the battery cell 6 includes electrode terminals 25. The electrode terminals 25 are electrically connected to the electrode assembly 10 for outputting or inputting electrical energy into the battery cell 6.

[0067] Please refer to the reference. Figures 2 to 4 , Figure 2 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application. Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application. Figure 4 This is a schematic diagram of the connector and insulating sleeve of a battery device provided in some embodiments of this application.

[0068] As shown in the figure, the battery device 2 includes a battery cell 6, an output electrode 5, an electrical connector 7, a connector 801, and an insulating sleeve 802. The battery cell 6 includes an electrode terminal 25, and the output electrode 5 is connected to the electrode terminal 25. The electrical connector 7 is used to connect to a circuit board 9, and a portion of the electrical connector 7 is stacked with the output electrode 5 along its thickness direction. The connector 801 includes a connecting rod 803 and a limiting portion 804, with the connecting rod 803 passing through the output electrode 5 and the electrical connector 7 in sequence. The limiting portion 804 is connected to one end of the connecting rod 803 and is located on the side of the electrical connector 7 opposite to the output electrode 5. The insulating sleeve 802 includes an insulating portion 805 located on the limiting portion 804 and a connecting portion 806 connected to the electrical connector 7, with the connecting portion 806 connected to the insulating portion 805.

[0069] Through electrode terminals 25, the battery cell 6 can stably and efficiently exchange and transmit electrical energy with external devices. The output electrode 5 is directly connected to electrode terminals 25, ensuring the continuity and stability of electrical energy transmission.

[0070] The electrical connector 7 transmits the operating status information of the battery cell 6 to the circuit board 9, enabling the circuit board 9 to monitor the operating status of the battery cell 6 in real time, including key parameters such as voltage, current, and temperature. If any abnormality occurs in the operation of the battery cell 6, such as overcharging, over-discharging, overheating, or short circuit, the circuit board 9 can respond quickly, issuing an alarm signal or performing a power-off operation, thereby effectively preventing safety accidents. For example, the electrical connector 7 can be a copper sheet, aluminum sheet, or other connector with good conductivity. A portion of the electrical connector 7 is stacked with the output electrode 5, while another portion is suspended outside the output electrode 5 and does not overlap with it.

[0071] The connector 801 is used to connect the electrical connection piece 7 and the output electrode piece 5, and its stability and reliability are directly related to the overall performance of the battery cell 6. To improve the electrical isolation performance between the connector 801 and other electrical connection parts 806 and reduce the risk of short circuits, an insulating part 805 is provided on the outside of the connector 801, increasing the creepage distance and effectively preventing arc discharge and short circuits even under high voltage and high current environments. For example, the connector 801 can be a connecting bolt, rivet, or other connecting part 806.

[0072] The insulating sleeve 802 may be an insulating material coated on the limiting portion 804 and the electrical connecting piece 7, which is then cooled to form the insulating sleeve 802. Optionally, the insulating sleeve 802 completely covers the limiting portion 804, providing good insulation protection to the exposed portion of the connector 801. Alternatively, the insulating sleeve 802 can be made of an insulating material and then assembled onto the connector 801 and the electrical connecting piece 7. For example, the insulating sleeve 802 can be made of materials such as polypropylene, polyimide, polyurethane, and polyethylene.

[0073] In the technical solution of this application embodiment, electrode terminals 25 are provided in the battery cell 6 to exchange and transmit electrical energy between the battery cell 6 and external devices. Output electrode 5 is connected to the electrode terminals 25, and electrical connector 7 is connected to the circuit board 9 to facilitate the transmission of the battery cell 6's operating status information to the circuit board 9. This allows the circuit board 9 to monitor the operating status of the battery cell 6 in real time, promptly issuing alarms or performing power-off operations when abnormalities occur in the battery cell 6, thereby improving the stability and controllability of the battery cell 6's operation. Connector 801 is used to connect the electrical connector 7 and the output electrode 5. An insulating part 805 is provided outside the connector 801, which increases the creepage distance between the connector 801 and other electrical connectors 806, reducing the risk of short circuits between the connector 801 and other components. Furthermore, the connection between the connecting part 806 and the electrical connector 7 improves the connection stability between the insulating sleeve 802 and the connector 801, reduces the risk of the insulating sleeve 802 detaching from the connector 801, and improves the stability of the battery cell 6's operation.

[0074] like Figure 2 as well as Figure 5 As shown, in some embodiments of this application, the electrical connector 7 includes a first portion 807 stacked with the output electrode 5 and a second portion 808 connected to the first portion 807. A connector 801 connects the first portion 807 and the output electrode 5, and a connector 806 connects to the second portion 808. For example, the connector 801 is a connecting bolt, and the output electrode 5 has a first bolt hole. The first portion 807 has a second bolt hole, and the connecting bolt passes through both the first bolt hole and the second bolt hole to connect the output electrode 5 and the electrical connector 7. The second portion 808 does not overlap with the output electrode 5.

[0075] The connecting bolt, as a standard connector 801, is readily available and easy to install. The connecting bolt securely connects the output electrode 5 and the electrical connector 7 by passing through a first bolt hole and a second bolt hole on the first portion 807. The electrical connector 7 includes a first portion 807 overlapping the output electrode 5 and a second portion 808 connected to the first portion 807. The second bolt hole on the first portion 807 is aligned with the first bolt hole on the output electrode 5 so that the connecting bolt can pass through and secure both. The second portion 808 can be suspended outside the output electrode 5, with the first portion 807 completely falling within the range of the output electrode 5 along the thickness direction, and the second portion 808 not overlapping the output electrode 5.

[0076] The connecting part 806 is connected to the second part 808 of the electrical connecting piece 7, that is, the part not connected to the output electrode 5. This reduces the probability of interference between the connecting part 806 and the output electrode 5, increases the contact area between the connecting part 806 and the electrical connecting piece 7, and thus improves the connection strength. The strong connection strength reduces the risk of the insulating sleeve 802 detaching from the connecting piece 801 due to vibration, temperature changes, or other factors during long-term use.

[0077] The insulating sleeve 802 is designed to cover the connecting bolts and the connection portion 806 to prevent current leakage and short circuits. Due to the increased contact area between the connection portion 806 and the electrical connection piece 7, the insulating sleeve 802 can more effectively fit and protect the connector 801, thereby improving the safety and reliability of the entire battery assembly.

[0078] In the above structure, the use of connecting bolts as connectors 801 is readily available, and the standard use of connecting bolts allows for better compatibility with existing equipment and structures. Connecting part 806 connects to the portion of the electrical connecting piece 7 that is not connected to the output electrode 5, increasing the contact area between connecting part 806 and the electrical connecting piece 7, improving connection strength, thereby further reducing the risk of separation between the insulating sleeve 802 and connector 801, and enhancing the insulation protection performance of connector 801.

[0079] In some embodiments of this application, the second portion 808 is bent relative to the first portion 807 toward the limiting portion 804 to be angled toward the first portion 807. Exemplarily, the second portion 808 is substantially perpendicular to the first portion 807. This structure can accommodate structures where the circuit board 9 and the electrode terminal 25 have deviations in height direction, improving the strength and stability of the connection between the circuit board 9 and the electrode terminal 25.

[0080] like Figure 6 As shown, in some embodiments of this application, the connecting portion 806 includes a connecting body 809 and a reinforcing portion 810. The connecting body 809 is stacked on the side surface of the electrical connecting piece 7 facing the limiting portion 804. One end of the reinforcing portion 810 is connected to the connecting body 809, and the other end of the reinforcing portion 810 extends to the side surface of the electrical connecting piece 7 away from the connecting body 809.

[0081] The connecting body 809 is stacked on the surface of the electrical connecting piece 7 facing away from the output electrode 5, forming a stable connection with the electrical connecting piece 7. The other end of the reinforcing part 810 extends from one side of the electrical connecting piece 7 along its side and around to the other side, forming a semi-enclosed or fully enclosed structure around the electrical connecting piece 7. This structure can effectively buffer damage such as vibration and impact that the battery device 2 is subjected to during operation.

[0082] In the above structure, by providing a connecting body 809 to cover the surface of the electrical connecting piece 7, a stable connection is formed with the electrical connecting piece 7, improving the connection strength between the connecting part 806 and the electrical connecting piece 7, while simultaneously providing insulation protection for the electrical connecting piece 7, reducing the risk of short circuits between the electrical connecting piece 7 and other components. The reinforcing part 810 extends to the other side of the electrical connecting piece 7, improving the connection strength while enhancing the insulation protection performance.

[0083] In some embodiments of this application, there are two reinforcing portions 810, which are respectively disposed on opposite sides of the electrical connecting piece 7. The reinforcing portions 810 and the connecting body 809 encircle the second part 808 along the circumference of the electrical connecting piece 7. The two reinforcing portions 810 are respectively disposed on opposite sides of the electrical connecting piece 7, and this symmetrical layout improves the stability and balance of the structure. The encircling structure refers to partially or completely surrounding the electrical connecting piece 7 from both sides. Partial enclosure forms an opening between the two reinforcing portions 810, which facilitates the installation of the insulating sleeve 802 to the connecting piece and the limiting portion 804 from the opening. Complete enclosure can be an insulating layer formed on the limiting portion 804 and the electrical connecting piece 7 by means of a coating. The encircling structure provides more fixing points and support surfaces, making it more difficult for the insulating part 805 to separate from the connector 801, further reducing the risk of the insulating part 805 falling off the connector 801.

[0084] In some embodiments of this application, the insulating portion 805 includes an insulating body 811 and an insulating connecting piece 813. The insulating body 811 covers the limiting portion 804, and the insulating connecting piece 813 is disposed on the surface of the first portion 807 away from the output electrode 5, and the insulating connecting piece 813 is connected to the insulating body 811.

[0085] By completely covering the limiting portion 804, the insulating body 811 provides a physical barrier for the connector 801, preventing current from flowing through unintended paths. This helps maintain the normal operation of the equipment and prevents damage or malfunction due to short circuits. The insulating connecting piece 813 covers the exposed surface of the electrical connecting piece 7, providing good insulation protection for it.

[0086] In the above structure, the insulating body 811 completely covers the limiting part 804 and the electrical connecting piece 7, providing insulation protection for the exposed part of the connector 801 and reducing the risk of short circuits in the connector 801 and the electrical connecting piece 7. 7.

[0087] In some embodiments of this application, the insulating sleeve 802 further includes an extension 812 that extends circumferentially along the insulating connecting piece 813 to the periphery of the electrical connecting piece 7.

[0088] The periphery of the electrical connector 7 refers to the side end face that connects to the large side surface of the electrical connector 7. The extension 812 covers the side surface and the side end face, reducing the risk of accidental contact due to operation or environmental factors, improving the electrical isolation of the equipment, and reducing the risk of current leakage or short circuit.

[0089] In some embodiments of this application, the insulating connecting piece 813 is interconnected with the connecting body 809. This structure enables a stable connection between the insulating part 805 and the connecting part 806, further improving the connection stability between the insulating sleeve 802 and the limiting part 804.

[0090] In some embodiments of this application, the extension 812 and the reinforcing portion 810 are interconnected. This interconnection means that the two parts physically form a single unit. This not only simplifies the assembly process but also improves the overall integrity and stability of the structure. The extension 812 and the reinforcing portion 810 together provide additional support and fixation for the electrical connection piece 7 and its surrounding components. This helps reduce the risk of loosening or damage to the connection due to factors such as vibration and temperature changes. The aforementioned structure improves the structural connection strength between the extension 812 and the reinforcing portion 810, and enhances the structural stability of the entire insulating sleeve 802.

[0091] In some embodiments of this application, the insulating part 805 and the connecting part 806 are integrally formed. An integrally formed structure means that the insulating part 805 and the connecting part 806 are manufactured simultaneously during the manufacturing process, eliminating the need for subsequent assembly steps. This simplifies the assembly process, reduces assembly time and cost, and improves the overall accuracy and reliability of the assembly of the insulating sleeve 802. The above structure improves the assembly efficiency and insulation protection performance of the insulating sleeve 802.

[0092] This application also provides an electrical device including the battery device 2 described in the above embodiments, which provides electrical energy. In the battery device 2, electrode terminals 25 are provided in the battery cell 6 to exchange and transmit electrical energy between the battery cell 6 and external devices. An output electrode 5 is connected to the electrode terminals 25, and an electrical connector 7 is connected to a circuit board 9 to transmit the operating status information of the battery cell 6 to the circuit board 9. This allows the circuit board 9 to monitor the operating status of the battery cell 6 in real time, promptly issuing warnings or performing power-off operations when abnormalities occur in the battery cell 6, thereby improving the stability and controllability of the battery cell 6. A connector 801 is used to connect the electrical connector 7 and the output electrode 5. An insulating part 805 is provided outside the connector 801 to increase the creepage distance between the connector 801 and other electrical connection parts 806, reducing the risk of short circuits between the connector 801 and other components. Furthermore, the connection part 806 is connected to the electrical connection piece 7, which improves the connection stability between the insulating sleeve 802 and the connector 801, reduces the risk of the insulating sleeve 802 falling off the connector 801, and improves the stability of the battery cell 6 during operation.

[0093] like Figure 7 As shown, an embodiment of this application provides a connecting assembly 8 for connecting a first connecting piece and a second connecting piece. The connecting assembly 8 includes a connector 801 and an insulating sleeve 802. The connector 801 includes a connecting rod 803 and a limiting portion 804, the connecting rod 803 passing sequentially through the first connecting piece and the second connecting piece. The limiting portion 804 is connected to one end of the connecting rod 803 and is located on the side of the first connecting piece opposite to the second connecting piece. The insulating sleeve 802 includes an insulating portion 805 located in the limiting portion 804 and a connecting portion 806 connected to the first connecting piece, the connecting portion 806 being connected to the insulating portion 805.

[0094] The first and second connecting pieces can be metal connecting pieces, or one of the connecting pieces can be made of insulating material. The first and second connecting pieces can be used for connections between various components, such as two electrical components that need to be energized, or two devices that need to be fixedly connected. The connecting assembly 8 is used to connect the first and second connecting pieces. The connecting assembly 8 has energized components around its periphery, and an insulating sleeve 802 is provided to increase the creepage distance between the electrical components and the connecting piece 801, thus providing insulation for the connecting assembly 8.

[0095] The insulating sleeve 802 may be an insulating material coated on the limiting portion 804 and the first connecting piece, which is then cooled to form the insulating sleeve 802. Optionally, the insulating sleeve 802 completely covers the limiting portion 804, providing good insulation protection for the exposed portion of the connector 801. Alternatively, the insulating sleeve 802 can be made of an insulating material and then assembled onto the connector 801 and the electrical connecting piece 7. For example, the insulating sleeve 802 can be made of materials such as polypropylene, polyimide, polyurethane, and polyethylene.

[0096] In the above structure, the connector 801 is used to connect the first connecting piece and the second connecting piece. An insulating portion 805 is provided on the outside of the connector 801, which increases the creepage distance between the connector 801 and other electrical connecting portions 806, reducing the risk of short circuits in the connector 801. Furthermore, the connection portion 806 connects to the electrical connecting piece 7, improving the connection stability between the insulating sleeve 802 and the connector 801, and reducing the risk of the insulating sleeve 802 detaching from the connector 801.

[0097] In some embodiments of this application, the connecting portion 806 includes a connecting body 809 and a reinforcing portion 810. The connecting body 809 is stacked on the surface of the first connecting piece facing the limiting portion 804. One end of the reinforcing portion 810 is connected to the connecting body 809, and the other end of the reinforcing portion 810 extends to the surface of the first connecting piece away from the connecting body 809.

[0098] In the above structure, by providing a connecting body 809 to cover the surface of the first connecting piece, a stable connection is formed with the first connecting piece, improving the connection strength between the connecting part 806 and the first connecting piece, while simultaneously providing insulation protection for the first connecting piece, reducing the risk of short circuits between the first connecting piece and other components. The reinforcing part 810 extends to the other side of the first connecting piece, improving the connection strength while enhancing the insulation protection performance.

[0099] In some embodiments of this application, the insulating portion 805 includes an insulating body 811, an insulating connecting piece 813, and an extension 812. The insulating body 811 covers the limiting portion 804, and the insulating connecting piece 813 is disposed on the surface of the first connecting piece opposite to the second connecting piece, and the insulating connecting piece 813 is interconnected with the insulating body 811. The extension 812 extends circumferentially along the insulating connecting piece 813 to the periphery of the first connecting piece.

[0100] In the above technical solution, the insulating body 811 completely covers the limiting part 804, providing insulation protection for the exposed part of the connector 801 and reducing the risk of short circuit in the connector 801. The extension part 812 covers the first connecting piece and its periphery, providing insulation for the first connecting piece and surrounding live parts, further improving the insulation protection performance.

[0101] In some optional embodiments, the connecting assembly 8 is used to connect the first connecting piece and the second connecting piece. The connecting assembly 8 includes a connector 801 and an insulating sleeve 802. The connector 801 includes a connecting rod 803 and a limiting portion 804, the connecting rod 803 passing through the first connecting piece and the second connecting piece in sequence. The limiting portion 804 is connected to one end of the connecting rod 803 and is located on the side of the first connecting piece opposite to the second connecting piece. The insulating sleeve 802 includes an insulating portion 805 located on the limiting portion 804 and a connecting portion 806 connected to the first connecting piece, the connecting portion 806 being connected to the insulating portion 805. The connecting portion 806 includes a connecting body 809 and a reinforcing portion 810. The connecting body 809 is stacked on the surface of the first connecting piece facing the limiting portion 804. One end of the reinforcing portion 810 is connected to the connecting body 809, and the other end of the reinforcing portion 810 extends to the surface of the first connecting piece opposite to the connecting body 809. There are two reinforcing parts 810, which are respectively located on opposite sides of the first connecting piece. The reinforcing parts 810 and the connecting body 809 encircle the first connecting piece along its circumference. The insulating part 805 includes an insulating body 811 and an insulating connecting piece 813. The insulating body 811 covers the limiting part 804, and the insulating connecting piece 813 is located on the surface of the first connecting piece opposite to the second connecting piece. The insulating connecting piece 813 is connected to the insulating body 811. The insulating sleeve 802 also includes an extension 812, which extends along the circumference of the insulating connecting piece 813 to the periphery of the first connecting piece. The insulating connecting piece 813 is connected to the connecting body 809. The extension 812 is connected to the reinforcing part 810. The insulating part 805 and the connecting part 806 are integrally formed.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a battery cell comprising an electrode terminal; an output tab connected to the electrode terminal; an electric connection tab for connecting a circuit board, a portion of the electric connection tab being stacked with the output tab in a thickness direction; a connecting piece comprising a connecting rod and a limiting portion, the connecting rod sequentially penetrating the output tab and the electric connection tab, the limiting portion being connected to one end of the connecting rod, the limiting portion being arranged on a side of the electric connection tab away from the output tab; an insulating sleeve comprising an insulating portion arranged on the limiting portion and a connecting portion connected to the electric connection tab, the connecting portion being connected to the insulating portion.

2. The battery device according to claim 1, characterized by The electric connection tab comprises a first portion stacked with the output tab and a second portion connected to the first portion, the connecting piece connecting the first portion and the output tab, and the connecting portion being connected to the second portion.

3. The battery device of claim 2, wherein The second portion is bent relative to the first portion towards the direction of the limiting portion to be arranged at an angle with the first portion.

4. The battery device of claim 3, wherein The connecting portion comprises: a connecting body stacked on a side surface of the electric connection tab towards the limiting portion; a reinforcing portion connected to one end of the connecting body and extending to a side surface of the electric connection tab away from the connecting body.

5. The battery device of claim 4, wherein The number of the reinforcing portions is two, the two reinforcing portions being arranged on opposite sides of the electric connection tab, the reinforcing portions and the connecting body surrounding the second portion in a circumferential direction of the electric connection tab.

6. The battery device of claim 5, wherein The insulating portion comprises: an insulating body covering the limiting portion; an insulating connecting tab arranged on a surface of the first portion away from the output tab, the insulating connecting tab being connected to the insulating body.

7. The battery device of claim 6, wherein The insulating sleeve further comprises an extending portion extending to a peripheral side of the electric connection tab in a circumferential direction of the insulating connecting tab.

8. The battery device of claim 7, wherein, The insulating connecting tab is connected to the connecting body, and / or the extending portion is connected to the reinforcing portion.

9. The battery device according to any one of claims 1 to 8, characterized by, The insulating portion and the connecting portion are in an integral structure.

10. An electric device, characterized by The electric device comprises the battery device as claimed in any one of claims 1-9.

11. A connection assembly for connecting a first connection tab and a second connection tab, characterized by The connecting assembly comprises: a connecting piece comprising a connecting rod and a limiting portion, the connecting rod sequentially penetrating the first connecting tab and the second connecting tab, the limiting portion being connected to one end of the connecting rod, the limiting portion being arranged on a side of the first connecting tab away from the second connecting tab; an insulating sleeve comprising an insulating portion arranged on the limiting portion and a connecting portion connected to the first connecting tab, the connecting portion being connected to the insulating portion.

12. The connection assembly of claim 11, wherein, The connecting portion comprises: a connecting body stacked on a side surface of the first connecting tab towards the limiting portion; a reinforcing portion connected to one end of the connecting body and extending to a side surface of the first connecting tab away from the connecting body.

13. The connection assembly of claim 12, wherein, The insulating portion comprises: an insulating body covering the limiting portion; an insulating connecting tab arranged on a surface of the first connecting tab away from the second connecting tab, the insulating connecting tab being connected to the insulating body; an extending portion extending to a peripheral side of the first connecting tab in a circumferential direction of the insulating connecting tab.

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