BDU unit, battery and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a BDU unit, a battery and an electric device, and the BDU unit comprises a shell, and a busbar, a wire harness and an electric part which are arranged in the shell, the busbar is connected with the electrical part through a first fastener; the connecting terminal of the wire harness is connected with the busbar through a second fastener, and the connecting terminal and the busbar are in limiting connection through an anti-rotation structure. According to the utility model, the anti-rotation structure is arranged between the connecting terminal of the wire harness and the busbar, so that the connecting terminal does not rotate along with the second fastener, thereby avoiding the problem of breakage of the wire harness, and improving the safety of the BDU unit.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a BDU unit, a battery and an electrical device. Background Art

[0002] With the rapid development of the new energy vehicle industry, battery safety has become particularly important. In order to effectively ensure the electrical safety performance of the battery, clear requirements have been put forward for the external output of the battery both at home and abroad. Therefore, the solution of built-in BDU in the battery has been widely used.

[0003] BDU (Battery Disconnect Unit), as a device that disconnects and connects high-voltage electricity to the power battery of new energy vehicles, plays a vital role in battery safety and is a relatively key component in new energy vehicles.

[0004] At present, when the connection terminals of the wiring harness inside the existing BDU unit are fixedly connected to the busbar through bolts, there is a situation where the connection terminals are easily rotated with the bolts, which easily causes the wiring harness to be damaged, affecting the safety of the BDU unit.

[0005] Therefore, there is a need to improve the existing technology.

[0006] The above information is presented as background information only to assist with an understanding of the present disclosure and is not a determination or admission that any of the above may be applicable as prior art with respect to the present disclosure. Utility Model Content

[0007] The utility model provides a BDU unit, a battery and an electric device, so as to solve the problem in the prior art that a wiring harness is damaged due to the wiring harness terminal rotating with a bolt.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] In a first aspect, the present invention provides a BDU unit, comprising a housing and a busbar, a wiring harness, and electrical components disposed in the housing;

[0010] The busbar is connected to the electrical component via a first fastener;

[0011] The connecting terminal of the wiring harness is connected to the busbar via a second fastener, and the connecting terminal and the busbar are connected in a limited position via an anti-rotation structure.

[0012] Furthermore, in the BDU unit, the anti-rotation structure includes a clamping portion formed on the connecting terminal and a clamping groove formed on the busbar for use with the clamping portion.

[0013] Further, in the BDU unit, the anti-rotation structure includes an anti-rotation portion formed on the connecting terminal;

[0014] The anti-rotation portion contacts the edge side wall of the busbar and limits the rotation of the connecting terminal.

[0015] Furthermore, in the BDU unit, the bus includes a first bus and a second bus;

[0016] The first bus is arranged inside the housing and connected to the electrical component via a first fastener;

[0017] The second busbar is arranged outside the shell and is connected to the first busbar via a third fastener.

[0018] Furthermore, in the BDU unit, the housing includes a bottom shell and an upper cover provided on the bottom shell;

[0019] The bottom shell and the upper cover are detachably connected;

[0020] A window is provided on the upper cover at a position corresponding to the connection between the first bus bar and the second bus bar;

[0021] A protective cover is detachably provided at the window.

[0022] Furthermore, in the BDU unit, a position corresponding to the window on the upper cover is provided with an inserting buckle position;

[0023] The protective cover is provided with a U-shaped elastic arm which can cooperate with the insertion buckle position to clamp the protective cover and the upper cover.

[0024] Further, in the BDU unit, the electrical component includes a resistor;

[0025] Two male buckles are spaced apart at the bottom of the bottom shell, and the hooks of the two male buckles are arranged oppositely;

[0026] A resistor mounting position is formed between the two male buckles, into which the resistor can be snapped and fixed.

[0027] Furthermore, in the BDU unit, the electrical component includes a fuse;

[0028] Heat dissipation holes are provided on the bottom shell at positions corresponding to the fuses.

[0029] In a second aspect, the present invention provides a battery, comprising the BDU unit provided in the first aspect.

[0030] In a third aspect, the present invention provides an electrical device comprising the battery provided in the second aspect.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The utility model provides a BDU unit, battery and electrical device, including a shell and a bus, a wiring harness and electrical components arranged in the shell. By providing an anti-rotation structure between the connecting terminal of the wiring harness and the bus, the connecting terminal will not rotate with the second fastener, thereby avoiding the problem of wiring harness damage and improving the safety of the BDU unit.

[0033] The present invention has other features and advantages, which will be apparent from the accompanying drawings and subsequent detailed descriptions incorporated herein, or will be described in detail in the accompanying drawings and subsequent detailed descriptions incorporated herein, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a structural diagram of a BDU unit provided in Example 1 of the present utility model;

[0036] Figure 2 This is a structural diagram of a BDU unit (without protective cover) provided in Example 1 of the present utility model;

[0037] Figure 3 This is a schematic structural diagram of the upper cover and protective cover provided in the first embodiment of the present invention;

[0038] Figure 4 This is a structural diagram of a BDU unit (without an upper cover and a protective cover) provided in Example 1 of the present utility model;

[0039] Figure 5 yes Figure 4 A schematic diagram of the structure enlarged in the middle;

[0040] Figure 6 This is a structural diagram of the bottom shell and electrical components provided in the first embodiment of the present invention;

[0041] Figure 7 It is a structural schematic diagram of the upper cover and the protective cover provided in the first embodiment of the present utility model.

[0042] Reference numerals:

[0043] Housing 1, busbar 2, wiring harness 3, electrical components 4, first fastener 5, second fastener 6, connecting terminal 7, anti-rotation structure 8, third fastener 9;

[0044] Bottom case 101, upper cover 102, window 103, protective cover 104, resistor mounting position 105, male buckle 106, heat dissipation structure 107, insertion buckle position 108, U-shaped elastic arm 109;

[0045] A first bus bar 201 and a second bus bar 202;

[0046] Resistor 401, fuse 402;

[0047] Engaging portion 801 , engaging groove 802 , anti-rotation portion 803 . DETAILED DESCRIPTION

[0048] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0049] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0050] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0051] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0052] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0053] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0054] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0055] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0056] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] Example 1

[0058] In view of the aforementioned deficiencies in the prior art, the applicant, drawing upon years of extensive practical experience and expertise in the design and manufacture of similar products, combined with the application of academic theory, has actively engaged in research and innovation, hoping to create a technology that can address these deficiencies. Through continuous research and design, and through repeated trial production and refinement, the applicant has finally created the present utility model, which possesses truly practical value.

[0059] Please refer to Figure 1-6 The present invention provides a BDU unit with sophisticated construction and comprehensive functionality. The BDU unit primarily consists of a housing 1 and multiple components mounted within it, including a busbar 2, a wiring harness 3, and electrical components 4. The layout of these components within the housing 1 is meticulously designed to ensure overall performance and safety.

[0060] Specifically, the busbar 2, as a key component for current collection and distribution, is tightly connected to the electrical component 4 via the first fastener 5. This connection ensures smooth current transmission between the busbar 2 and the electrical component 4, while ensuring the stability and reliability of the connection.

[0061] The wiring harness 3 serves as a transmission path for electrical signals, and its connection terminals 7 are connected to the busbar 2 via the second fastener 6 .

[0062] It's worth noting that to prevent the wiring harness 3 from being damaged by rotation with the second fastener 6, this embodiment creatively incorporates a rotation-limiting structure 8 between the connecting terminal 7 and the busbar 2. This innovative design prevents the connecting terminal 7 from rotating with the second fastener 6 during assembly and use, effectively protecting the integrity of the wiring harness 3 and improving the safety of the BDU unit.

[0063] It is understood that the specific implementation of the anti-rotation structure 8 can be selected and designed based on actual needs, and its design is flexible and adaptable to different application environments and requirements. Regardless of the method used, its fundamental purpose is to ensure the relative position between the connecting terminal 7 and the busbar 2 is stable, thereby preventing damage to the wiring harness 3 due to relative rotation between the two, and improving the safety and reliability of the BDU unit.

[0064] For example, the anti-rotation structure 8 can realize its anti-rotation function through a variety of mechanical structures. Figure 5The anti-rotation structure 8 may include a snap-fit ​​portion 801 formed on the connecting terminal 7 and a snap-fit ​​groove 802 formed on the busbar 2 for use with the snap-fit ​​portion 801. This structure achieves a secure connection between the connecting terminal 7 and the busbar 5 through the tight fit between the snap-fit ​​portion 801 and the snap-fit ​​groove 802, effectively preventing damage to the wiring harness caused by rotation. Alternatively, the anti-rotation structure 8 may also include a snap-fit ​​groove 802 formed on the connecting terminal 7 and a snap-fit ​​portion 801 formed on the busbar 2. The anti-rotation principle is the same as the aforementioned structure, and the anti-rotation function is achieved through the fit between the snap-fit ​​portion 801 and the snap-fit ​​groove 802.

[0065] In the second implementation, please refer again to Figure 5 The anti-rotation structure 8 can include an anti-rotation portion 803 formed on the connecting terminal 7. In this structure, the anti-rotation portion 803 contacts the edge sidewall of the busbar 2 and restricts the rotation of the connecting terminal through friction or other mechanical constraints. This design can also effectively protect the wiring harness 3 from damage due to rotation.

[0066] It should be noted that the above-described embodiment of the anti-rotation structure 8 is merely illustrative and does not constitute a limitation on the embodiments of the present invention. In actual applications, the anti-rotation structure 8 may be designed and improved in other ways according to specific needs, as long as it can achieve the purpose of preventing relative rotation between the connecting terminal 7 and the busbar 2.

[0067] In this embodiment, the busbar 2 is a key component for current collection and distribution. Its design and layout are directly related to the overall performance and safety of the BDU unit. Figure 4 This embodiment will explain in detail the design and arrangement of the bus 2 in this embodiment.

[0068] The busbar 2 in this embodiment is divided into two main parts: a first busbar 201 and a second busbar 202. These two parts respectively assume different functions and are arranged in different positions, and together constitute a complete busbar 2 system.

[0069] The first busbar 201 is carefully placed within the BDU housing 1. This design ensures that the first busbar 201 is effectively protected by the housing 1, preventing interference and damage from the external environment. Furthermore, the first fastener 5 provides a tight connection between the first busbar 201 and the electrical components 4. This connection not only ensures smooth current transmission between the two, but also significantly improves the stability and reliability of the connection.

[0070] Unlike the first busbar 201, the second busbar 202 is located outside the housing 1. This design allows the second busbar 202 to be directly connected to external devices or circuits, effectively integrating the BDU unit with external systems. Furthermore, the second busbar 202 is securely connected to the first busbar 201 via the third fastener 9. This connection ensures stable current transmission between the two and improves the structural strength and reliability of the entire busbar 2 system.

[0071] In summary, the design of Bus 2 in this embodiment fully considers the performance and safety requirements of the BDU unit. Through reasonable layout and connection methods, an efficient, stable, and safe Bus 2 system is successfully implemented, providing a strong guarantee for the overall performance of the BDU unit.

[0072] Please refer again Figure 2-4 In this embodiment, the housing 1 includes a bottom shell 101 and an upper cover 102 disposed on the bottom shell 101;

[0073] The bottom shell 101 and the upper cover 102 are detachably connected.

[0074] It should be noted that the BDU unit's housing 1 adopts a split design, specifically comprising a base housing 101 and an upper cover 102 disposed on the base housing 101. This design ensures that the housing 1 has sufficient structural strength while also providing good maintainability, allowing internal components to be quickly replaced or upgraded when needed.

[0075] The bottom case 101 serves as the primary load-bearing component of the BDU unit. Its interior accommodates key components such as the busbar 2, wiring harness 3, and electrical components 4. The material and structural design of the bottom case 101 are carefully selected to ensure sufficient mechanical strength and heat dissipation, thereby protecting internal components from external interference and damage.

[0076] The upper cover 102 serves as the sealing element for the bottom case 101, tightly fitting with the bottom case 101 to form a complete BDU housing. The design of the upper cover 102 also takes into account structural strength and heat dissipation performance to ensure that the BDU unit can maintain stable operating conditions during long-term operation.

[0077] It is worth mentioning that the specific implementation form of the detachable connection method can be selected and designed according to actual needs, for example, it can be a bolt connection, a snap connection, etc.

[0078] Please refer again Figure 2-3 In this embodiment, a window 103 is provided on the upper cover 102 at a position corresponding to the connection between the first bus 201 and the second bus 202;

[0079] A protective cover 104 is detachably provided at the window 103 .

[0080] It should be noted that the design of the upper cover 102 not only prioritizes structural integrity but also fully considers practicality and maintainability in actual use. In this embodiment, a window 103 is specifically provided on the upper cover 102 for the connection between the first busbar 201 and the second busbar 202. This design allows the user to directly observe and access the connection between the first busbar 201 and the second busbar 202 without having to fully open the upper cover 102. This not only improves user convenience but also helps quickly locate and address problems in emergency situations.

[0081] However, to ensure both convenience and safety and dustproofness, this embodiment also features a removable protective cover 104 at window 103. Protective cover 104 is detachably connected to upper cover 102, ensuring convenient opening and closing when needed. When observing and operating the connection between first busbar 201 and second busbar 202, the user can easily remove protective cover 104; when not needed, it can be reinstalled to protect internal components from external factors such as dust and moisture.

[0082] It is understood that there are various options for connecting the protective cover 104 to the upper cover 102. For example, in one alternative embodiment, the protective cover 104 can be connected to the upper cover 102 using a snap-fit ​​connection. This connection method is simple and easy to use, allowing the protective cover 104 to be quickly installed on the upper cover 102 while also being easily removed for cleaning or replacement.

[0083] For specific implementation, please refer to Figure 7 , the position of the upper cover 102 corresponding to the window 103 is specially designed with a through buckle position 108. The design of this through buckle position 108 is sophisticated, which not only ensures a stable connection with the protective cover 104, but also ensures the convenience of operation.

[0084] The protective cover 104 is equipped with a U-shaped elastic arm 109 that mates with the insertion buckle 108. To install the protective cover 104 on the upper cover 102, simply align the U-shaped elastic arm 109 with the insertion buckle 108 and gently press it. The U-shaped elastic arm 109 will naturally snap into the insertion buckle 108, thus tightly connecting the protective cover 104 and the upper cover 102. To remove the protective cover 104, simply press the sides of the U-shaped elastic arm 109 to eject it from the insertion buckle 108.

[0085] This snap-on connection is not only simple to operate but also highly reliable. No tools are required for either installation or removal, significantly improving work efficiency. Furthermore, the elastic design of the U-shaped spring arm 109 creates a tighter connection between the protective cover 104 and the upper cover 102, effectively preventing the intrusion of external factors such as dust and moisture, ensuring the safety and stability of the BDU unit's internal components.

[0086] Please refer again Figure 6 , in this embodiment, the electrical component 4 includes a resistor 401;

[0087] Two male buckles 106 are spaced apart at the bottom of the bottom shell 101, and the hooks of the two male buckles 106 are arranged opposite to each other;

[0088] A resistor mounting position 105 is formed between the two male buckles 106 , into which the resistor 401 can be inserted and fixed.

[0089] It should be noted that the resistor 401 plays a key role in the circuit, such as current limiting and voltage dividing.

[0090] In order to ensure stable installation of the resistor 401 , this embodiment adopts a unique fixing design in the bottom of the bottom shell 101 .

[0091] Specifically, two male buckles 106 are spaced apart at the bottom of the bottom shell 101. The hooks of the two male buckles 106 are arranged opposite to each other to form a stable structure. The space between the two male buckles 106 is the resistor mounting position 105, which provides a mounting position for the resistor 401.

[0092] The design of resistor mounting position 105 takes full account of the size and installation requirements of resistor 401, ensuring that resistor 401 can be securely snapped into place. This design not only simplifies the installation process of resistor 401, but also improves installation accuracy and avoids performance issues caused by improper installation.

[0093] At the same time, the relative arrangement of the hooks of the male buckle 106 also provides a good fixing effect for the resistor 401. This fixing method can effectively prevent the resistor 401 from loosening or shifting during operation, ensuring the stability and reliability of the resistor 401.

[0094] In general, the design of the male buckle 106 and the resistor mounting position 105 in this embodiment provides a stable and reliable installation environment for the resistor 401, ensuring that the resistor 401 can work normally and efficiently in the circuit.

[0095] In specific implementations, the material and manufacturing process of the male buckle 106 should ensure that it has sufficient strength and wear resistance to withstand the vibration and heat generated by the resistor 401 during operation.

[0096] Please refer again Figure 6 , in this embodiment, the electrical component 4 further includes a fuse 402;

[0097] A heat dissipation hole 107 is provided on the bottom housing 101 at a position corresponding to the fuse 402 .

[0098] It should be noted that the electrical component 4 is not limited to the resistor 401, but further includes a fuse 402. As an important circuit protection component, the fuse 402 can promptly cut off the circuit when an abnormal situation such as a short circuit or overload occurs, thereby protecting the safety of other electrical equipment and lines.

[0099] Considering that the fuse 402 may generate a certain amount of heat during operation, in order to prevent it from being damaged due to overheating or affecting the normal operation of other components, this embodiment specially provides heat dissipation holes 107 on the bottom shell 101 at the position corresponding to the fuse 402. These heat dissipation holes 107 can effectively increase the air circulation around the fuse 402 and help it dissipate heat.

[0100] The number and layout of heat dissipation holes 107 can be selected and designed based on actual needs to ensure that they meet the heat dissipation requirements while not negatively affecting the structure and performance of the entire BDU unit. In addition, to further improve the heat dissipation effect, heat sinks or other auxiliary heat dissipation devices, such as cooling fans, liquid cooling systems, etc., can be added to the heat dissipation holes 107.

[0101] It is understood that the type and quantity of the electrical components 4, as the core components of the BDU unit, may vary depending on the actual application requirements. In addition to the resistor 401 and fuse 402 mentioned above, the electrical components 4 may also include other types of electrical components such as shunts and relays.

[0102] These electrical components each play a unique role in the BDU. For example, a shunt measures or monitors current, while a relay controls the on / off switching of a circuit. They work together to ensure the BDU operates as designed, meeting the practical needs of electric vehicles and other applications.

[0103] However, it should be noted that the specific circuit design of these electrical components is not the focus of this design. Numerous mature circuit design solutions are available in the prior art. Therefore, in the embodiments of this utility model, our primary focus is on how to effectively integrate these electrical components into the BDU unit through reasonable layout and structural design, and ensure their stable and reliable operation.

[0104] In summary, while the specific circuit design of electrical component 4 is not the focus of this design, its importance and role in the BDU unit cannot be ignored. By properly selecting and configuring electrical components, we can build a BDU unit with comprehensive functionality and stable performance, providing strong support for the development of applications such as electric vehicles.

[0105] Although this application frequently uses terms such as housing, busbar, wiring harness, electrical component, first fastener, and second fastener, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

[0106] The utility model provides a BDU unit, including a shell and a bus, a wiring harness, and electrical components arranged in the shell. By providing an anti-rotation structure between the connecting terminal of the wiring harness and the bus, the connecting terminal will not rotate with the second fastener, thereby avoiding the problem of wiring harness damage and improving the safety of the BDU unit.

[0107] Example 2

[0108] An embodiment of the present invention provides a battery, including the BDU unit provided in the above-mentioned embodiment 1.

[0109] It is understandable that the battery also includes other component designs in addition to the ones mentioned above, such as battery cell modules, boxes, etc. The specific function of these component designs is to ensure the normal operation of various functions of the battery. In view of the fact that these component designs have been implemented in many existing technologies and are not the focus of the design of this embodiment, they will not be elaborated in depth here.

[0110] In this embodiment, the battery module and the BDU unit are properly placed in the box, and together constitute the core part of the battery.

[0111] Because the battery in this embodiment utilizes the BDU unit provided in the first embodiment, it naturally inherits all of the advantages of the BDU unit. In particular, the introduction of an anti-rotation structure prevents the connection terminals 7 of the wiring harness 3 from rotating due to the rotation of the second fastener 6 when connected to the busbar 2, effectively preventing damage to the wiring harness 3 and significantly improving battery safety.

[0112] In addition, by optimizing the layout of the wiring harness 3 and the configuration of the electrical components 4, the battery of this embodiment also achieves more efficient and stable electrical performance. These improvements not only improve the overall quality of the product, but also greatly enhance the user experience.

[0113] Example 3

[0114] An embodiment of the present invention provides an electrical device, comprising the battery provided in the above-mentioned second embodiment.

[0115] It can be understood that in addition to a battery for providing electrical energy, the electrical device should also include an object that receives electrical energy, that is, the electrical subject. The battery is connected to the electrical subject, and the electrical subject can achieve the set functions under the drive of electrical energy.

[0116] The battery-powered devices described in this embodiment can be in various forms, such as electric vehicles, unmanned aerial vehicles, power tools, and the like. Power tools include metal cutting power tools and cleaning tools, such as electric drills, electric wrenches, vacuum cleaners, and robot vacuums. The present embodiment does not impose any particular limitations on these power-powered devices.

[0117] Since the battery provided in this embodiment has excellent electrical performance, it is beneficial for the electrical device to be used in application scenarios such as outdoor energy storage, short-term backup power, and mobile energy storage, thereby expanding the application scenarios of the electrical device.

[0118] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A BDU unit, characterized in that: It comprises a housing (1) and a busbar (2), a wiring harness (3), and an electrical component (4) arranged on the housing (1); The busbar (2) is connected to the electrical component (4) via a first fastener (5); The connecting terminal (7) of the wiring harness (3) is connected to the busbar (2) via a second fastener (6), and the connecting terminal (7) and the busbar (2) are connected in a limited manner via an anti-rotation structure (8).

2. The BDU unit according to claim 1, characterized in that: The anti-rotation structure (8) comprises a snap-fit ​​portion (801) formed on the connecting terminal (7) and a snap-fit ​​groove (802) formed on the busbar (2) and used in conjunction with the snap-fit ​​portion (801).

3. The BDU unit according to claim 1, characterized in that: The anti-rotation structure (8) comprises an anti-rotation portion (803) formed on the connecting terminal (7); The anti-rotation portion (803) contacts the edge side wall of the busbar (2) and limits the rotation of the connecting terminal (7).

4. The BDU unit according to claim 1, characterized in that: The busbar (2) comprises a first busbar (201) and a second busbar (202); The first busbar (201) is arranged inside the housing (1) and is connected to the electrical component (4) via the first fastener (5); The second busbar (202) is arranged outside the housing (1) and is connected to the first busbar (201) via a third fastener (9).

5. The BDU unit according to claim 4, characterized in that: The housing (1) comprises a bottom shell (101) and an upper cover (102) arranged on the bottom shell (101); The bottom shell (101) and the upper cover (102) are detachably connected; A window (103) is provided on the upper cover (102) at a position corresponding to the connection between the first busbar (201) and the second busbar (202); A protective cover (104) is detachably provided at the window (103).

6. The BDU unit according to claim 5, characterized in that: A insertion buckle position (108) is provided on the upper cover (102) at a position corresponding to the window (103); The protective cover (104) is provided with a U-shaped elastic arm (109) that can cooperate with the insertion buckle position (108) to clamp the protective cover (104) and the upper cover (102).

7. The BDU unit according to claim 5, characterized in that: The electrical component (4) includes a resistor (401); Two male buckles (106) are spaced apart in the bottom of the bottom shell (101), and the hook bodies of the two male buckles (106) are arranged opposite to each other; A resistor mounting position (105) is formed between the two male buckles (106) to allow the resistor (401) to be snapped in and fixed.

8. The BDU unit according to claim 5, characterized in that: The electrical component (4) includes a fuse (402); A heat dissipation hole (107) is provided on the bottom shell (101) at a position corresponding to the fuse (402).

9. A battery, characterized in that: The device comprises the BDU unit according to any one of claims 1 to 8.

10. An electrical device, characterized in that: Comprising the battery of claim 9.

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