Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a battery monomer and an output conductive member, the battery monomer is provided with an electrode terminal, the output conductive member comprises a conductive main body, and a first conductive connection part and a second conductive connection part which are connected to the conductive main body, an insulation structure is formed on the surface of the conductive body in an injection molding mode, at least part of the first conductive connection portion and at least part of the second conductive connection portion are exposed out of the insulation structure, the first conductive connection portion is electrically connected to the electrode terminal, and the second conductive connection portion is electrically used for being connected to an external conductive piece. In the technical scheme provided by the invention, the conductive main body is completely wrapped by the insulating structure, only the first conductive connection part and the second conductive connection part are exposed for necessary conductive connection, and the exposed area of the output conductive part can be reduced, so that the insulation protection effect of the output conductive part is improved, and the risk of insulation failure is reduced.

Description

Technical Field

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

[0002] In existing power battery packs composed of individual battery cells, it is usually necessary to set up output terminals to output electrical energy to external loads. The current power output scheme is to connect an output switch to the output terminal, and then extend the output switch outward to form a conductive point for external conductive plates to connect. However, the insulation protection of the output switch is currently poor, and the risk of insulation failure of the output switch is high. Utility Model Content

[0003] The main objective of this application is to propose a battery device and electrical equipment that aims to improve the poor insulation protection of the output electrode plates in existing power battery packs.

[0004] In a first aspect, the battery device proposed in this application includes:

[0005] A single battery cell has electrode terminals; and,

[0006] The output conductive element includes a conductive body and a first conductive portion and a second conductive portion connected to the conductive body. The surface of the conductive body is injection molded with an insulating structure, and the first conductive portion and the second conductive portion are at least partially exposed outside the insulating structure. The first conductive portion is electrically connected to the electrode terminal, and the second conductive portion is electrically used to connect to an external conductive element.

[0007] The technical solution provided in this application integrally molds the insulating structure onto the conductive body using injection molding. This allows for comprehensive protection of the conductive body's surface, exposing only the first and second conductive portions for necessary conductive connections. This reduces the exposed area of ​​the output conductive component. Furthermore, due to the integrity of the injection-molded insulating structure, even salt spray or condensation in harsh environments cannot penetrate the insulating structure and reach the internal conductive body. This solution improves the insulation protection level of the output conductive component and reduces the risk of insulation failure. Moreover, injection molding ensures a stable connection between the insulating structure and the conductive body, preventing the insulating structure from easily detaching. For conductive bodies with complex shapes, injection molding also makes it easier to achieve complete coverage of the conductive body by the insulating structure, while also offering higher production efficiency.

[0008] In some embodiments, the first conductive portion and / or the second conductive portion are bent relative to the conductive body, and a bent structure is formed at their connection points;

[0009] The insulating structure covers the bent structure.

[0010] In this design, the first and second conductive parts are bent relative to the conductive body, and the output conductive component can extend the second conductive part to the corresponding contact position according to the needs of the external conductive component. Compared with the solution of splicing the insulating shell into segments to the output bar, the injection-molded insulating structure in this solution can also fully cover the bent structure.

[0011] In some embodiments, the second conductive portion is exposed outside the insulating structure in the first direction;

[0012] The battery device also includes:

[0013] A connecting portion is disposed on the second guiding portion; and,

[0014] A mating part is connected to the connecting part, and the mating part is configured to be movable and adjustable relative to the second conductive part in the first direction to press the external conductive member to the second conductive part.

[0015] Since the mating part is connected to the connecting part and can be adjusted relative to the second conductive part in the first direction, the mating part can press the external conductive element onto the second conductive part in the first direction through its own adjustment, thus ensuring a stable conductive contact between the external conductive element and the second conductive part.

[0016] In some embodiments, the connecting portion includes a connecting nut;

[0017] The mating part includes mating bolts.

[0018] The threaded connection between the connecting nut and the mating bolt allows for stepless adjustment in the first direction, enabling more precise clamping force to be applied to external conductive components. Furthermore, the threaded connection has a self-locking function, effectively preventing loosening of the mating bolt in the first direction and ensuring the reliability of the connection between the connecting nut and the mating bolt.

[0019] In some embodiments, a mounting hole is formed through the second guide portion along the first direction;

[0020] The connecting part is riveted to the mounting hole.

[0021] In this process, riveting the connecting part into the mounting hole on the second guide part can ensure a stable connection between the connecting part and the second guide part. On the other hand, the mounting hole can also solve the centering and positioning problem of the connecting part during the assembly process. Compared with welding or snap-fit ​​assembly methods, riveting assembly method is more efficient, has lower requirements for assembly equipment, and has less impact on the second guide part.

[0022] In some embodiments, the connecting portion has a first end and a second end in the first direction, the second end extending out of the mounting hole and extending radially along the mounting hole to form an annular protrusion, the annular protrusion abutting against the second guide portion;

[0023] The mating part is connected to the first end of the connecting part.

[0024] An annular protrusion is provided at the second end of the connecting part. After the connecting part is riveted to the second guide part, the annular protrusion can abut against the solid of the second guide part around the mounting hole. During the connection process between the mating part and the connecting part, the presence of the annular protrusion prevents the connecting part from coming out of the mounting hole, thereby ensuring a stable connection between the connecting part and the second guide part.

[0025] In some embodiments, the insulating structure is disposed around the second conductive portion and together with the second conductive portion defines a contact groove that opens in a first direction.

[0026] The insulation structure surrounding the second conductor provides insulation protection around it. Because of the insulation structure, workers are less likely to accidentally touch the second conductor, thus reducing the risk of electric shock.

[0027] In some embodiments, the battery device further includes:

[0028] A connecting portion is disposed in the second conductive portion and is located in the electrical contact groove; and,

[0029] A mating part is connected to the connecting part, and the mating part is configured to be movable and adjustable relative to the second conductive part in the first direction to press the external conductive member to the second conductive part.

[0030] Since the mating part is connected to the connecting part and can be adjusted relative to the second conductive part in the first direction, the mating part can press the external conductive part onto the second conductive part in the first direction through its own adjustment. The connecting part is set in the electrical groove, and the insulation structure corresponding to the electrical groove can also limit the external conductive part from the periphery. The conductive connection between the external conductive part and the second conductive part is stable and reliable.

[0031] In some embodiments, the connecting portion extends along the first direction and has a first end away from the second conductive portion, the first end being insulated and close to the opening of the electrical contact groove.

[0032] The connecting part extends along the first direction, providing a connection base for the mating part to move and adjust in the first direction. This solution utilizes this characteristic of the connecting part to insulate the first end of the connecting part away from the second conductor and close to the opening of the electrical connection groove. With the first end of the connecting part blocking, the size of objects that can enter the electrical connection groove from the outside is further restricted, which further reduces the risk of workers accidentally touching the second conductor.

[0033] In some embodiments, the connecting portion includes:

[0034] A connecting nut, disposed on the second guide portion, the connecting nut extending along the first direction; and...

[0035] An insulating sleeve is fitted onto the free end of the connecting nut, and the insulating sleeve extends beyond the free end of the connecting nut in the first direction, the insulating sleeve including the first end;

[0036] The mating part includes a mating bolt, which is connected to the connecting nut.

[0037] The connecting part is designed as a combination of a connecting nut and an insulating sleeve. The connecting nut and the mating bolt are connected by threads. The mating bolt can be infinitely adjusted in the first direction, which can apply more precise holding force to the external conductive parts. At the same time, the threaded connection also has a self-locking function, which can effectively prevent the mating bolt from loosening in the first direction and ensure the reliability of the connection between the connecting nut and the mating bolt. Meanwhile, the insulating sleeve is fitted on the free end of the connecting nut, which does not affect the connection between the connecting nut and the mating bolt. The insulating sleeve extends beyond the free end of the connecting nut in the first direction, which can ensure the insulation protection of the connecting nut.

[0038] In some embodiments, the insulating sleeve has an insulating end away from the second conductive portion, and the inner wall of the insulating end is formed with a limiting protrusion that abuts against the free end of the connecting nut.

[0039] The insulating end of the insulating sleeve can only provide effective insulation protection if it extends beyond the free end of the connecting nut in the first direction. Based on this, a limiting protrusion is provided on the inner wall of the insulating end. During the process of pressing the insulating sleeve onto the connecting nut, the limiting protrusion can abut against the free end of the connecting nut, which can prevent the insulating sleeve from being over-insulated into the connecting nut, thus ensuring that the insulating end extends beyond the free end of the connecting nut.

[0040] In some embodiments, the peripheral sidewall of the connecting nut is formed with a first engaging portion;

[0041] The insulating sleeve has a connecting end near the second conductive part, and the inner wall of the connecting end is formed with a second engaging part, and the first engaging part engages with the second engaging part.

[0042] Since the internal threaded hole of the connecting nut actually serves as the connection, this solution utilizes the peripheral sidewall of the connecting nut to provide a first engaging part, and at the same time provides a second engaging part on the inner wall of the connecting end of the insulating sleeve. During the process of pressing the insulating sleeve onto the connecting nut, the first engaging part and the second engaging part can engage and cooperate, thereby connecting the insulating sleeve to the free end of the connecting nut. This connection method is simple and reliable, and can prevent the insulating sleeve from accidentally falling off.

[0043] Secondly, this application also proposes an electrical device that includes the aforementioned battery device. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0045] Figure 1 A simplified structural diagram of an embodiment of an electrical device provided in this application, which is a vehicle;

[0046] Figure 2 An exploded structural diagram of an embodiment of the battery device provided in this application;

[0047] Figure 3 This is a three-dimensional structural diagram of the assembly consisting of the output conductive component, the insulating structure, and the connecting part in the battery device provided in this application.

[0048] Figure 4 for Figure 3 Top view of the mid-assembly structure;

[0049] Figure 5 for Figure 3 A partial cross-sectional schematic diagram of the output conductive component and the connecting nut;

[0050] Figure 6 for Figure 3 A cross-sectional schematic diagram of the output conductive component, connecting nut, and insulation structure;

[0051] Figure 7 for Figure 3 A cross-sectional schematic diagram of the output conductive components, connecting parts, and insulation structure;

[0052] Figure 8for Figure 7 A cross-sectional view of the connecting part.

[0053] Explanation of icon numbers:

[0054] 1000, vehicles;

[0055] 100. Battery assembly; 200. Controller; 300. Motor;

[0056] 1. Housing; 1a. Mounting cavity; 11. Housing body; 12. Housing cover; 2. Battery cell; 21. Electrode terminal; 3. Output conductive component; 31. Conductive body; 31a. Bending structure; 32. First conductive part; 33. Second conductive part; 33a. Mounting hole; 4. Connecting part; 4a. First end; 4b. Second end; 41. Connecting nut; 41a. Free end; 41b. Annular protrusion; 41c. First engaging part; 42. Insulating sleeve; 42a. Insulating end; 421a. Limiting protrusion; 42b. Connecting end; 421b. Second engaging part; 5. Insulating structure; 51. Connecting groove; X. First direction.

[0057] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0063] 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.

[0064] 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.

[0065] The battery device disclosed in this application can be used to provide electrical energy to electrical devices, which can be, but are not limited to, electric vehicles, electric cars, ships, spacecraft, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0066] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.

[0067] Please refer to Figure 1 , Figure 1This application provides a simplified structural diagram of an embodiment of an electrical device used in a vehicle. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 1000 is internally installed in the vehicle 1000, and the battery device 1000 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 1000 can be used to power the vehicle 1000; for example, the battery device 1000 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 controls the battery device 1000 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0068] In some embodiments of this application, the battery device 1000 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0069] In existing power battery packs composed of individual battery cells, it is usually necessary to set up output terminals to output electrical energy to external loads. The current power output scheme is to connect output terminals to output plates, and then extend the output plates outward to form conductive points for external conductive plates to connect. However, most output plates are currently exposed. When the electrical equipment with the power battery pack is in a harsh environment, salt spray and condensation in the environment can easily penetrate the output plates, and the risk of insulation failure between the output plates and the power battery pack housing is relatively high.

[0070] To address the aforementioned issues, current battery technology offers several solutions, namely, installing an insulating shell on a large exposed area of ​​the output battery pad using a snap-fit ​​mechanism. While this insulating shell does offer some protection for the output battery pad, the irregular shape and numerous bending areas of the output battery pad necessitate segmented design of the insulating shell at these bending points for proper mounting. This results in gaps between adjacent sections of the insulating shell, as well as gaps within the insulating shell itself created during the snap-fit ​​process. Salt spray and condensation in harsh environments can still penetrate these gaps and reach the output battery pad, leaving a significant risk of insulation failure between the output battery pad and the battery pack housing.

[0071] Analysis of the above problems shows that the irregular shape of the output bar is difficult to change. The solution of splicing the insulating shell to the output bar will inevitably have splicing gaps. Therefore, an integral molding method can be used to directly mold the insulating structure onto the output bar, which eliminates the need to consider the irregular shape of the output bar and the insulating structure itself does not have splicing gaps.

[0072] In view of this, this application provides a battery device that can at least improve the problem of poor insulation protection for the output electrode plates in existing power battery packs.

[0073] To facilitate understanding of the battery device provided in this application, the following description is provided in conjunction with the accompanying drawings, wherein... Figure 2 An exploded structural diagram of an embodiment of the battery device provided in this application; Figure 3 This is a three-dimensional structural diagram of the assembly consisting of the output conductive component, the insulating structure, and the connecting part in the battery device provided in this application.

[0074] Figure 4 for Figure 3 Top view of the mid-assembly structure; Figure 5 for Figure 3 A partial cross-sectional schematic diagram of the output conductive component and the connecting nut; Figure 6 for Figure 3 A cross-sectional schematic diagram of the output conductive component, connecting nut, and insulation structure; Figure 7 for Figure 3 A cross-sectional schematic diagram of the output conductive components, connecting parts, and insulation structure; Figure 8 for Figure 7 A cross-sectional view of the connecting part.

[0075] Please see Figure 2 , Figure 3 and Figure 6 In one embodiment of this application, the battery device 100 includes a battery cell 2 and an output conductive element 3. The battery cell 2 has an electrode terminal 21. The output conductive element 3 includes a conductive body 31 and a first conductive portion 32 and a second conductive portion 33 connected to the conductive body 31. An insulating structure 5 is injection molded on the surface of the conductive body 31, and the first conductive portion 32 and the second conductive portion 33 are at least partially exposed outside the insulating structure 5. The first conductive portion 32 is electrically connected to the electrode terminal 21, and the second conductive portion 33 is electrically used to connect to an external conductive element.

[0076] It should be noted that the structure of the "battery cell 2" typically includes a casing, an electrode assembly, and two electrode terminals 21. The casing usually has a cavity within it, and the electrode assembly is installed in this cavity. The electrode assembly is typically composed of a positive electrode, a negative electrode, and a separator, assembled by stacking or winding. The positive and negative electrode are led out to the outside of the casing via two electrode terminals 21 located on the casing wall to connect to the current-carrying component of the battery device 100. The battery cell 2 can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 2 can be cylindrical, flat, cuboid, or other shapes.

[0077] In the battery device 100, there are usually multiple battery cells 2. These multiple battery cells 2 can be connected in series, in parallel, or in a mixed manner. A mixed connection means that multiple battery cells 2 are connected in both series and parallel. Multiple battery cells 2 can be directly connected in series, in parallel, or in a mixed manner to form a battery assembly. Of course, multiple battery cells 2 can also be connected in series, in parallel, or in a mixed manner to form a battery module, and then the multiple battery modules are connected in series, in parallel, or in a mixed manner to form a battery assembly. Of course, the possibility of the battery device 100 containing only a single battery cell 2 should not be excluded.

[0078] The battery device 100 provided in this embodiment can be in the form of a battery module or a battery unit. Regardless of the form, the battery device 100 requires at least one battery cell 2 to output externally. At least one of the two electrode terminals of the battery cell 2 is used to connect to the first conductive part 32 of the output conductive member 3 (for the battery device 100 containing only a single battery cell 2, the two electrode terminals of the battery cell 2 are respectively used to connect to the first conductive parts 32 of the two output conductive members 3).

[0079] For the battery device 100 being a complete battery unit, please refer to [link / reference]. Figure 2 The battery device 100 also includes a housing 1. The battery device 100 is mainly installed on the vehicle through the housing 1, and the battery cells 2 are installed through the mounting cavity 1a inside the housing 1. The basic structure of the housing 1 generally includes a housing body 11 and a housing cover 12. The housing cover 12 is disposed on the housing body 11 and together with the housing body 11 defines the mounting cavity 1a. Generally speaking, the battery cells 2 are generally disposed on the housing body 11. After the battery device 100 is mounted on the vehicle, the housing cover 12 is generally close to the vehicle, and the housing body 11 is generally away from the vehicle. The specific structural form of the housing 1 includes various forms, and this embodiment does not limit it.

[0080] The “output conductive component 3” includes a conductive body 31 and a first conductive part 32 and a second conductive part 33 connected to the conductive body 31. The first conductive part 32 is electrically connected to the electrode terminal 21 of the battery cell 2, while the second conductive part 33 is used for connecting to an external conductive component. The other end of the external conductive component may be connected to an external load, or it may be connected to the electrode terminal 21 of the battery cell 2 of another battery device 100 (in this case, both battery devices 100 are battery modules and need to be electrically connected to each other). The connection method between the first conductive part 32 and the electrode terminal 21 is usually welding, but threaded connection is also possible. The connection method between the second conductive part 33 and the external conductive component is usually threaded connection, but overlapping or snap-fit ​​connection is also possible. The material of the output conductive component 3 is usually a material with high conductivity, such as copper or aluminum. This application embodiment does not limit the specific material of the output conductive component 3.

[0081] Regarding "the surface of the conductive body 31 is injection molded with an insulating structure 5", please refer to the relevant documentation. Figure 5 and Figure 6 ( Figure 5 The diagram shows the structure of the conductive body 31 before the injection-molded insulating structure 5, while Figure 6 The diagram shows the structure after the conductive body 31 is injection molded into the insulating structure 5. "Injection molding" refers to injecting molten material into a mold cavity to form a product. After the material cools and solidifies, the mold is opened and the finished product is removed. Generally, the injection molded insulating structure 5 can be identified as being made of plastic, but it is not excluded that it may be made of ceramic. For example, the insulating structure 5 made of ceramic material can also be manufactured by injection molding. That is, ceramic powder is first mixed with an organic binder, then injected into the mold cavity to form the product, and then debinding and sintering processes are performed to produce the final product. Regardless of the material, the insulating structure 5 and the conductive body 31 are in adhesive contact at all points on the surface after injection molding. Since the insulating structure 5 is an integral structure without gaps, it is completely encapsulated and integrally formed with the conductive body 31. Under the protection of the insulating structure 5, salt spray or condensation from the external environment cannot penetrate the conductive body 31 through the insulating structure 5. The phrase "the first conductive part 32 and the second conductive part 33 are at least partially exposed outside the insulating structure 5" aims to indicate that, apart from the necessary conductive connection areas such as the first conductive part 32 and the second conductive part 33, the other areas of the output conductive element 3, i.e., the conductive body 31, are all covered by the insulating structure 5. Of course, the first conductive part 32 and the second conductive part 33 may be completely or partially exposed outside the insulating structure 5, as long as a certain conductive area is provided.

[0082] The technical solution provided in this application integrally molds the insulating structure 5 onto the conductive body 31 using injection molding. This allows for comprehensive protection of the surface of the conductive body 31, exposing only the first conductive part 32 and the second conductive part 33 for necessary conductive connections. This reduces the exposed area of ​​the output conductive component 3. Furthermore, due to the integrity of the injection molding of the insulating structure 5 itself, even salt spray or condensation in harsh environments is unlikely to penetrate the insulating structure 5 and contact the conductive body 31 inside. This solution improves the insulation protection level of the output conductive component 3 and reduces the risk of insulation failure. Moreover, injection molding ensures a stable connection between the insulating structure 5 and the conductive body 31, preventing the insulating structure 5 from easily detaching. Additionally, for conductive bodies with complex shapes like the conductive body 31, injection molding makes it easier to achieve complete coverage of the conductive body 31 by the insulating structure 5, while also offering higher production efficiency.

[0083] In some embodiments, the first conductive portion 32 and / or the second conductive portion 33 are bent relative to the conductive body 31, and a bent structure 31a is formed at their connection; the insulating structure 5 covers the bent structure 31a.

[0084] It should be noted that the two parallel technical features "first conductive part 32" and "second conductive part 33" in the above scheme can be set individually or simultaneously. There is no inherent superiority or inferiority between the different settings; they are actually designed according to the power connection requirements of the corresponding external conductive parts. For example... Figure 5 As shown, the first conductive part 32 and the second conductive part 33 are bent in opposite directions relative to the conductive body 31 at both ends of the conductive body 31, so that after the first conductive part 31 is connected to the electrode terminal 21, the second conductive part 33 can be positioned on the side of the battery device 100 to obtain fixed support for the end plate or housing of the battery device 100, and the external conductive component can be stably connected to the second conductive part 33 from the side of the battery device 100.

[0085] "Bending structure 31a" refers to the bending area on the output conductive component 3 that smoothly connects the first conductive part 32 to the conductive body 31 and the second conductive part 33 to the conductive body 31. If both the first conductive part 32 and the second conductive part 33 are bent relative to the conductive body 31, then two bending structures 31a are formed accordingly (e.g., Figure 5 (As shown); In the existing scheme of splicing the insulating shell into segments to the output bar, the segment positions of the insulating shell usually correspond to the bending areas of the output bar.

[0086] According to the above technical solution, the first conductive part 32 and the second conductive part 33 are bent relative to the conductive body 31. The output conductive component 3 can extend the second conductive part 33 to the corresponding power connection position according to the needs of the external conductive component. Compared with the solution of splicing the insulating shell into segments to the output bar, the injection-molded insulating structure 5 in this solution can also fully cover the bent structure 31a.

[0087] Please see Figure 7 (Although Figure 7 (The structure of the mating part is not shown in the figure, but it does not affect the understanding of the solution.) In some embodiments, the second conductive part 33 is exposed outside the insulating structure 5 facing the first direction X. The battery device 100 also includes a connecting part 4 and a mating part. The connecting part 4 is disposed on the second conductive part 33. The mating part is connected to the connecting part 4 and is configured to be movable and adjustable relative to the second conductive part 33 in the first direction X so as to press the external conductive member to the second conductive part 33.

[0088] It should be noted that, given that the second conductive part 33 is used for connecting external conductive components, the orientation of the second conductive part 33 is uncertain relative to the battery cell 2. Therefore, the embodiments of this application do not limit the specific orientation of the first direction X relative to the battery device 100.

[0089] Due to the obstruction of the insulating structure 5, "the second conductive part 33 is exposed outside the insulating structure 5 in the first direction X" should be understood as the surface of the second conductive part 33 in the first direction X being used as a conductive connection; the connecting part 4 is disposed on the second conductive part 33, the mating part is connected to the connecting part 4, and can be adjusted in the first direction X to press the external conductive element to the second conductive part 33 through its own adjustment. The mating connection between the connecting part 4 and the mating part is intended to provide a fixed foundation for the electrical connection between the second conductive part 33 and the external conductive element. There are various structural forms of such mating connection that allow the mating part to be adjusted in the connection direction. For example, the connecting part 4 is a plurality of grooves distributed in the insertion hole extending along the first direction X, and the mating part is a protrusion on the side wall of the insertion rod. The insertion rod is inserted into the insertion hole along the first direction X. By selecting the protrusion and the corresponding groove to connect through interference mating, the position of the mating part can be adjusted. This embodiment does not limit the structural form of the connecting part 4 and the mating part. Since the mating part needs to be able to provide a pressing force toward the second conductive part 33 for the external conductive part, the mating part should have a connection with the external conductive part, or the external conductive part should be pressed by a protrusion provided on its own sidewall.

[0090] According to the above technical solution, since the mating part is connected to the connecting part 4 and can be adjusted relative to the second conductive part 33 in the first direction X, the mating part can press the external conductive member onto the second conductive part 33 in the first direction X through its own adjustment, thus ensuring a stable conductive contact between the external conductive member and the second conductive part 33.

[0091] In some embodiments, the connecting part 4 includes a connecting nut 41; the mating part includes a mating bolt.

[0092] It should be noted that "connecting part 4 includes connecting nut 41" can be understood as connecting part 4 having a threaded hole. Connecting part 4 is not necessarily a standard nut, and may also include other structures. "Mating part includes mating bolt" can be understood as mating part having a threaded rod. Mating part is not necessarily a standard bolt, and may also include other structures. This embodiment does not limit this, but the mating bolt can at least use its radially extending screw head to press against the external conductive part.

[0093] According to the above technical solution, through the threaded connection between the connecting nut 41 and the mating bolt, the mating bolt can be infinitely adjusted in the first direction X, which can apply a more precise holding force to the external conductive parts. At the same time, the threaded connection also has a self-locking function, which can effectively prevent the mating bolt from loosening in the first direction X, and ensure the reliability of the connection between the connecting nut 41 and the mating bolt.

[0094] Please see Figure 5 In some embodiments, a mounting hole 33a is formed through the second guide portion 33 along the first direction X; the connecting portion 4 is riveted to the mounting hole 33a.

[0095] It should be noted that in this embodiment, "riveting" refers to the connection part 4 being matched with the diameter of the mounting hole 33a by the deformation of the connecting part 4 and the partial deformation of the second guide part 33, so that the connecting part 4 can be stably held in the mounting hole 33a.

[0096] According to the above technical solution, the connecting part 4 is riveted to the mounting hole 33a on the second guide part 33. On the one hand, it can ensure the stable connection between the connecting part 4 and the second guide part 33. On the other hand, the mounting hole 33a can also solve the centering and positioning problem of the connecting part 4 during the assembly process. At the same time, compared with the assembly methods of welding or snap-fitting, the riveting assembly method is more efficient, has lower requirements for assembly equipment, and has less impact on the second guide part 33.

[0097] Please see Figure 5 , Figure 6 and Figure 7 In some embodiments, the connecting portion 4 has a first end 4a and a second end 4b in a first direction X. The second end 4b extends out of the mounting hole 33a and extends radially along the mounting hole 33a to form an annular protrusion 41b, which abuts against the second guide portion 33. The mating portion is connected to the first end 4a of the connecting portion 4.

[0098] It should be noted that, since the connecting part 4 is riveted into the mounting hole 33a of the second guide part 33, its first end 4a and second end 4b can at least pass through the mounting hole 33a. In this embodiment, the first end 4a of the connecting part 4 is used for connection of the mating part, and the second end 4b of the connecting part 4 is formed with an annular protrusion 41b. The annular protrusion 41b can be a structure that the connecting part 4 has before riveting, or it can be a structure that the connecting part 4 is deformed after riveting.

[0099] According to the above technical solution, an annular protrusion 41b is provided at the second end 4b of the connecting part 4. After the connecting part 4 is riveted to the second guide part 33, the annular protrusion 41b can abut against the solid of the second guide part 33 around the mounting hole 33a. During the connection process between the mating part and the connecting part 4, due to the presence of the annular protrusion 41b, the connecting part 4 will not come out of the mounting hole 33a, thereby ensuring a stable connection between the connecting part 4 and the second guide part 33.

[0100] Please see Figure 6 In some embodiments, the insulating structure 5 is disposed around the second conductive portion 33 and together with the second conductive portion 33 defines a junction groove 51 that opens along the first direction X.

[0101] It should be noted that "the insulating structure 5 is arranged around the second conductive part 33 and together with the second conductive part 33 defines the electrical connection groove 51 that opens in the first direction X" can be understood as the second conductive part 33 being completely covered by the insulating structure 5, and the insulating structure 5 having a certain thickness in the first direction X, so that it can define the electrical connection groove 51 with the second conductive part 33, and the bottom wall of the electrical connection groove 51 is the second conductive part 33.

[0102] According to the above technical solution, the insulation structure 5 is arranged around the second conductive part 33, which is equivalent to providing insulation protection for the second conductive part 33. Due to the obstruction of the insulation structure 5, the operator is less likely to accidentally touch the second conductive part 33, and the risk of electric shock is reduced.

[0103] Please continue reading. Figure 6 In some embodiments, the battery device 100 further includes a connecting portion 4 and a mating portion. The connecting portion 4 is disposed on the second conductive portion 33 and is located in the electrical contact groove 51. The mating portion is connected to the connecting portion 4 and is configured to be movable and adjustable relative to the second conductive portion 33 in a first direction X to press an external conductive member onto the second conductive portion 33.

[0104] It should be noted that the above embodiments have already explained the connecting part 4 and the mating part, and this embodiment will not repeat them.

[0105] According to the above technical solution, since the mating part is connected to the connecting part 4 and can be adjusted relative to the second conductive part 33 in the first direction X, the mating part can press the external conductive part onto the second conductive part 33 along the first direction X through its own adjustment. The connecting part 4 is set in the electrical groove 51, and the insulating structure 5 corresponding to the electrical groove 51 can also limit the external conductive part from the periphery. The conductive connection between the external conductive part and the second conductive part 33 is stable and reliable.

[0106] Please see Figure 7 and Figure 8In some embodiments, the connecting portion 4 extends along the first direction X and has a first end 4a away from the second conductive portion 33. The first end 4a is insulated and close to the opening of the electrical connection groove 51.

[0107] It should be noted that the first end 4a of the connecting part 4 is close to the opening of the electrical contact groove 51. This can be understood as the height of the first end 4a of the connecting part 4 relative to the second conductive part 33 in the first direction X being approximately equal to the groove depth of the electrical contact groove 51. "The first end 4a is insulated" should be understood as the connecting part 4 being insulated at least at the first end 4a. The connecting part 4 may be an insulated component as a whole, or the structure other than the first end 4a may be a metal component. The connection between the first end 4a and the metal component can be an integral connection or a snap-fit ​​connection.

[0108] According to the above technical solution, the connecting part 4 extends along the first direction X, providing a connection basis for the mating part to move and adjust in the first direction X. This solution utilizes this characteristic of the connecting part 4 to insulate the first end 4a of the connecting part 4 away from the second conductive part 33 and close to the slot opening of the electrical connection groove 51. Under the obstruction of the first end 4a of the connecting part 4, the size of the object that can enter the electrical connection groove 51 is further restricted, which further reduces the risk of the operator accidentally touching the second conductive part 33.

[0109] Please continue reading. Figure 8 In some embodiments, the connecting portion 4 includes a connecting nut 41 and an insulating sleeve 42. The connecting nut 41 is disposed on the second guide portion 33 and extends along the first direction X. The insulating sleeve 42 is sleeved on the free end 41a of the connecting nut 41 and extends beyond the free end 41a of the connecting nut 41 in the first direction X. The insulating sleeve 42 includes a first end 4a. The mating portion includes a mating bolt, which is connected to the connecting nut 41.

[0110] It should be noted that in this embodiment, the first end 4a of the connecting part 4 is set as an insulating sleeve 42, and the part of the connecting part 4 other than the insulating sleeve 42 is set as a connecting nut 41. The connecting nut 41 is a main component of the connecting part 4. Since the connecting part 4 extends along the first direction X, it can be assumed that the threaded hole of the connecting nut 41 extends along the first direction X. One end of the connecting nut 41 is connected to the second guide part 33, and the other end serves as a free end 41a for connection with the mating bolt. The insulating sleeve 42 is sleeved on the free end 41a. In order not to affect the connection of the mating bolt to the threaded hole of the connecting nut 41, the diameter of the through hole of the insulating sleeve 42 is larger than the diameter of the threaded hole of the connecting nut 41. "The insulating sleeve 42 extends beyond the free end 41a of the connecting nut 41 in the first direction X" is intended to ensure the insulation protection of the connecting nut 41. Under the protection of the insulating sleeve 42, it is difficult for external objects to directly touch the connecting nut 41.

[0111] According to the above technical solution, the connecting part 4 is configured as a combination of a connecting nut 41 and an insulating sleeve 42. Through the threaded connection between the connecting nut 41 and the mating bolt, the mating bolt can be infinitely adjusted in the first direction X, which can apply a more precise holding force to the external conductive parts. At the same time, the threaded connection also has a self-locking function, which can effectively prevent the mating bolt from loosening in the first direction X, ensuring the reliability of the connection between the connecting nut 41 and the mating bolt. Meanwhile, the insulating sleeve 42 is sleeved on the free end 41a of the connecting nut 41, which does not affect the connection between the connecting nut 41 and the mating bolt. At the same time, the insulating sleeve 42 extends beyond the free end 41a of the connecting nut 41 in the first direction X, which can ensure the insulation protection of the connecting nut 41.

[0112] Please see Figure 8 In some embodiments, the insulating sleeve 42 has an insulating end 42a away from the second conductive portion 33, and the inner wall of the insulating end 42a forms a limiting protrusion 421a, which abuts against the free end 41a of the connecting nut 41.

[0113] It should be noted that the "insulating end 42a" is the part of the insulating sleeve 42 that extends beyond the connecting nut 41 along the first direction X. The insulating end 42a is usually a sleeve-shaped structure and also has an inner wall. The limiting protrusion 421a formed on the inner wall undoubtedly coincides with the free end 41a of the connecting nut 41 in the first direction X. During the process of pressing the insulating sleeve 42 onto the connecting nut 41, the limiting protrusion 421a can abut against the free end 41a of the connecting nut 41.

[0114] According to the above technical solution, the insulating end 42a of the insulating sleeve 42 can only play an effective insulating and protective role if it extends beyond the free end 41a of the connecting nut 41 in the first direction X. Based on this, a limiting protrusion 421a is provided on the inner wall of the insulating end 42a. During the process of pressing the insulating sleeve 42 onto the connecting nut 41, the limiting protrusion 421a can abut against the free end 41a of the connecting nut 41, which can prevent the insulating sleeve 42 from being overly fitted into the connecting nut 41, so as to ensure that the insulating end 42a extends beyond the free end 41a of the connecting nut 41.

[0115] Please see Figure 8 In some embodiments, the peripheral sidewall of the connecting nut 41 is formed with a first engaging portion 41c; the insulating sleeve 42 has a connecting end 42b near the second conductive portion 33, and the inner wall of the connecting end 42b is formed with a second engaging portion 421b, and the first engaging portion 41c engages with the second engaging portion 421b.

[0116] It should be noted that "the peripheral sidewall of the connecting nut 41" refers to the outer peripheral sidewall of the connecting nut 41 relative to its threaded hole. A first engaging portion 41c is formed on this outer peripheral sidewall. The connecting end 42b of the insulating sleeve 42 is located near the second guiding portion 33. The connecting end 42b is the end that engages with the connecting nut 41 in the first direction X. During the process of the insulating sleeve 42 being fitted into the connecting nut 41 along the first direction X, the second engaging portion 421b formed on the inner wall of its connecting end 42b engages with the first engaging portion 41c of the connecting nut 41 through interference, thereby restricting the movement of the insulating sleeve 42 along the first direction X. There are various forms of engagement between the first engaging portion 41c and the second engaging portion 421b, for example... Figure 8 In the product shown, the second engaging part 421b is specifically an annular engagement protrusion, and the first engaging part 41c is specifically an annular engagement groove. This embodiment does not limit this aspect.

[0117] According to the above technical solution, since the internal threaded hole of the connecting nut 41 actually plays a connecting role, this solution utilizes the peripheral sidewall of the connecting nut 41 to provide a first engaging part 41c, and at the same time provides a second engaging part 421b on the inner wall of the connecting end 42b of the insulating sleeve 42. During the process of pressing the insulating sleeve 42 onto the connecting nut 41, the second engaging part 421b can engage into the first engaging part 41c, thereby connecting the insulating sleeve 42 to the free end 41a of the connecting nut 41. This connection method is simple and reliable, and can prevent the insulating sleeve 42 from accidentally falling off.

[0118] This application also proposes an electrical device including a battery device 100 for providing electrical energy. The specific structure of the battery device 100 is as described in the above embodiments. Since this electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here. The battery device 100 is used to provide electrical energy to the electrical device, which includes, but is not limited to, new energy vehicles such as pure electric vehicles, hybrid electric vehicles, and range-extended electric vehicles, as well as engineering vehicles such as electric excavators and electric bulldozers, and may also include aircraft such as electric drones and electric passenger aircraft.

[0119] This application discloses a battery device 100, which includes a battery cell 2, an output conductive element 3, an insulating sleeve 42, a connecting nut 41, and a mating bolt. The battery cell 2 has an electrode terminal 21. The output conductive element 3 includes a conductive body 31 and a first conductive portion 32 and a second conductive portion 33 formed on the conductive body 31. The first conductive portion 32 is electrically connected to the electrode terminal 21. The surface of the conductive body 31 is covered with an insulating structure 5, and the first conductive portion 32 and the second conductive portion 33 are exposed outward from the insulating structure 5. The insulating structure 5 is arranged around the second conductive portion 33 and is connected to the second conductive portion 33. The two conductive parts define a junction groove 51 that opens along the first direction X. A mounting hole 33a is formed on the second conductive part 33 that extends along the first direction X. A connecting nut 41 is riveted to the mounting hole 33a. One end of the connecting nut 41 has an annular protrusion 41b formed radially thereon. The annular protrusion 41b abuts against the second conductive part 33. The other end of the connecting nut 41 passes through the mounting hole 33a and is positioned close to the opening of the junction groove 51. An insulating sleeve 42 is fitted onto the other end of the connecting nut 41 corresponding to the opening of the junction groove 51. A bolt is used to connect the connecting nut 41 along the first direction X to press the external conductive component to the second conductive part.

[0120] 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 in that, include: A single battery cell has electrode terminals; as well as, The output conductive element includes a conductive body and a first conductive portion and a second conductive portion connected to the conductive body. The surface of the conductive body is injection molded with an insulating structure, and the first conductive portion and the second conductive portion are at least partially exposed outside the insulating structure. The first conductive portion is electrically connected to the electrode terminal, and the second conductive portion is electrically used to connect to an external conductive element.

2. The battery device as claimed in claim 1, characterized in that, The first conductive portion and / or the second conductive portion are bent relative to the conductive body, and a bent structure is formed at their connection point; The insulating structure covers the bent structure.

3. The battery device as claimed in claim 1, characterized in that, The second conductive portion is exposed outside the insulating structure in the first direction; The battery device also includes: A connecting portion is disposed on the second guiding portion; and, A mating part is connected to the connecting part, and the mating part is configured to be movable and adjustable relative to the second conductive part in the first direction to press the external conductive member to the second conductive part.

4. The battery device as claimed in claim 3, characterized in that, The connecting part includes a connecting nut; The mating part includes mating bolts.

5. The battery device as claimed in claim 3, characterized in that, A mounting hole is formed through the second guide portion along the first direction; The connecting part is riveted to the mounting hole.

6. The battery device as claimed in claim 5, characterized in that, The connecting portion has a first end and a second end in the first direction. The second end extends out of the mounting hole and extends radially along the mounting hole to form an annular protrusion. The annular protrusion abuts against the second guide portion. The mating part is connected to the first end of the connecting part.

7. The battery device as claimed in claim 1 or 2, characterized in that, The insulating structure is disposed around the second conductive portion and together with the second conductive portion defines a junction groove that opens in the first direction.

8. The battery device as claimed in claim 7, characterized in that, The battery device also includes: A connecting portion is disposed in the second conductive portion and is located in the electrical contact groove; and, A mating part is connected to the connecting part, and the mating part is configured to be movable and adjustable relative to the second conductive part in the first direction to press the external conductive member to the second conductive part.

9. The battery device as claimed in claim 8, characterized in that, The connecting portion extends along the first direction and has a first end away from the second conductive portion. The first end is insulated and close to the opening of the electrical contact groove.

10. The battery device as claimed in claim 9, characterized in that, The connecting part includes: A connecting nut, disposed on the second guide portion, the connecting nut extending along the first direction; and... An insulating sleeve is fitted onto the free end of the connecting nut, and the insulating sleeve extends beyond the free end of the connecting nut in the first direction, the insulating sleeve including the first end; The mating part includes a mating bolt, which is connected to the connecting nut.

11. The battery device as claimed in claim 10, characterized in that, The insulating sleeve has an insulating end away from the second conductive part, and a limiting protrusion is formed on the inner wall of the insulating end, which abuts against the free end of the connecting nut.

12. The battery device as claimed in claim 10, characterized in that, The peripheral sidewall of the connecting nut has a first engaging portion; The insulating sleeve has a connecting end near the second conductive part, and the inner wall of the connecting end is formed with a second engaging part, and the first engaging part and the second engaging part engage with each other.

13. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 12.

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