Busbar connecting assembly for connecting busbars, busbar assembly, and busway enclosure assembly

Abstract

Embodiments of the present invention provide a busbar connecting assembly for connecting busbars, a busbar assembly, and a busway enclosure assembly. The busbar connecting assembly comprises: a pair of conductive plates, which are suitable for clamping and connecting a first busbar and a second busbar which are separated from each other and extend in the same extension direction, wherein each conductive plate of the pair of conductive plates comprises: a body; a pair of coupling portions, which are at least arranged at the end portions of the body in the extension direction, wherein the pair of coupling portions are respectively made of the same material as the surfaces of connecting portions of the first busbar and the second busbar, and coupled to the body in a solid-liquid coupling or solid-solid coupling manner; and a positioning hole, which is located in the middle of the body in the extension direction; and a locking member, which is coupled in the positioning hole to lock and electrically connect the first busbar and the second busbar by respectively pressing the pair of coupling portions to the surfaces of the connecting portions of the first busbar and the second busbar. In this way, the contact resistance of busbar electrical contact can be reduced, and the stability of electrical contact can be improved.

Description

Busbar connection components, busbar components and busbar box components for connecting busbars Technical Field

[0001] Example embodiments of the present disclosure generally relate to the technical field of power transmission and distribution equipment, and in particular to a busbar connection assembly, a busbar assembly, and a busbar box assembly for connecting busbars. Background Art

[0002] Busbars are widely used for power transmission. They are primarily used for power distribution in power systems and factory workshops, ensuring the orderly and safe transmission of power. Each busbar is connected by a connector.

[0003] However, during operation, the high contact resistance between bus ducts and connectors can lead to excessively high temperatures in contact areas (such as the bus duct ends, connectors, and the bus duct socket connections). This high contact resistance associated with the electrical coupling between conventional bus ducts and connectors not only affects the efficiency of power system operation but also poses a potential threat to system safety.

[0004] Utility Model Content

[0005] An object of the present disclosure is to provide a busbar connection assembly, a busbar assembly, and a busbar box assembly for connecting busbars, so as to at least partially solve the above-mentioned problems and / or other potential problems existing in traditional busbar connections.

[0006] In a first aspect of the present disclosure, a busbar connection assembly for connecting busbars is provided. The busbar connection assembly includes: a pair of conductive plates adapted to clamp and connect a first busbar and a second busbar that are separated from each other and extend in the same extension direction, each conductive plate in the pair of conductive plates including: a body arranged to overlap with a connection portion located at mutually adjacent ends of the first busbar and the second busbar; a pair of coupling portions arranged at least at the ends of the body in the extension direction, the pair of coupling portions respectively coupled to the body by solid-liquid coupling or solid-solid coupling using the same material as the surface of the connection portion of the first busbar and the second busbar; a positioning hole formed on the body and located in the middle of the body in the extension direction; and a locking member coupled in the positioning hole to lock and electrically connect the first busbar and the second busbar by pressing the pair of coupling portions respectively against the surfaces of the connection portion of the first busbar and the second busbar.

[0007] In the embodiment according to the present disclosure, by overlapping the connecting portion between the main body and the end portions of the first busbar and the second busbar, it is possible to ensure that the main body covers the connecting portion, thereby forming a solid support base.

[0008] The coupling portion is located at the end of the main body in the extension direction, and the pair of coupling portions are made of the same material as the first busbar and second busbar connecting portions, and are coupled to the main body through solid-liquid coupling or solid-solid coupling. Therefore, it can ensure that the coupling portion forms a good contact with the surface of the busbar, forming a low-resistance connection.

[0009] By coupling the locking member into the positioning hole, the pair of coupling portions are pressed against the connecting surfaces of the first and second busbars, thereby locking and electrically connecting the first and second busbars. This method can effectively reduce contact resistance, improve electrical transmission performance, and lower the temperature of the contact area. Other benefits will be described below in conjunction with corresponding embodiments.

[0010] In some embodiments, an extension length of each coupling portion in the pair of coupling portions in the extension direction is equal to a length of a connecting portion of the first busbar or the second busbar in the extension direction.

[0011] In some embodiments, an extension length of the coupling portion along the extension direction of the conductive plate is at least three times the sum of the thicknesses of the body and the coupling portion.

[0012] In some embodiments, the thickness of the coupling portion is no greater than the thickness of the body.

[0013] In some embodiments, the conductive plate further includes: a plurality of limiting blocks arranged to protrude from the body near the periphery of the positioning hole.

[0014] In some embodiments, ends of the pair of conductive plates in the extending direction are chamfered.

[0015] In a second aspect of the present disclosure, a busbar assembly is provided. The busbar assembly includes: a busbar connection assembly according to the first aspect; and a busbar group including at least a first busbar and a second busbar extending in the same extension direction, the first busbar and the second busbar each including a connection portion and a power transmission portion for power transmission, the connection portion being formed at ends of the first busbar and the second busbar where the power transmission portions are adjacent to each other, wherein the connection portion is adapted to be clamped between coupling portions of conductive plates of the busbar connection assembly to establish an electrical connection between the first busbar and the second busbar.

[0016] In some embodiments, the connection portion is integrally formed at the ends of the power transmission portions of the first busbar and the second busbar that are close to each other by solid-liquid coupling or solid-solid coupling.

[0017] In some embodiments, a length of the connecting portion in the extending direction is equal to an extending length of the coupling portion in the extending direction.

[0018] In some embodiments, the connection portion is disposed on an entire side of the first bus bar or the second bus bar close to the conductive plate to electrically couple the conductive plates.

[0019] In a third aspect of the present disclosure, a busbar box assembly is provided, comprising: a busbar box; and a plurality of busbar assemblies according to the second aspect, arranged in the busbar box.

[0020] In some embodiments, the busbar box assembly further includes: an insulating spacer disposed at least between the conductive plates of the busbar connection assemblies of the plurality of busbar assemblies.

[0021] It should be understood that the content described in this summary section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0023] FIG1 shows a schematic structural diagram of a busbar connection assembly locking a busbar according to some embodiments of the present disclosure;

[0024] FIG2 is a schematic structural diagram showing a busbar connection assembly detached from a busbar according to some embodiments of the present disclosure;

[0025] FIG3 shows a cross-sectional view of a busbar connection assembly detached from a busbar according to some embodiments of the present disclosure;

[0026] FIG4 shows a schematic structural diagram of a pair of busbars inserted between a pair of conductive plates according to some embodiments of the present disclosure;

[0027] FIG5 shows a schematic structural diagram of a conductive plate according to some embodiments of the present disclosure; and

[0028] 6 and 7 are schematic structural diagrams of busbars according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present disclosure in more detail with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0030] In the description of the embodiments of the present disclosure, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may be included below. The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may be included below.

[0031] As briefly mentioned above, high contact resistance in the contact area can lead to overheating. Specifically, in the low-voltage power transmission and distribution industry, traditional busbar ducts (hereinafter also referred to as busbar box assemblies) are typically divided into multiple independent zones or strips for transmitting different phases of power. These individual busbars are connected by connectors (hereinafter also referred to as busbar connection assemblies).

[0032] However, during operation, the continuous flow of current between bus ducts and connectors creates a high contact resistance, leading to excessively high temperatures in the contact area between the bus duct and connector. For example, for aluminum busbars in traditional bus ducts, there are two common contact types: one employing tinned aluminum conductors, and the other employing additional contacts welded to the ends of the aluminum conductors.

[0033] Due to the softness of tinned aluminum conductors, the tin layer easily falls off after repeated insertion and removal operations, resulting in direct aluminum-aluminum electrical contact in the contact area after the tin layer falls off. Because aluminum has a high contact resistance, this situation will significantly increase the contact resistance of the contact area and the temperature of the seal will also rise, which will negatively impact the normal operation and life of the busbar trunking.

[0034] Another approach involves welding additional contacts (such as copper contacts) to the ends of aluminum conductors to form aluminum busbars. During operation, the busbar trunking and connectors experience electrical corrosion due to the contact between copper and aluminum. This means the only surface area where the contacts meet the aluminum conductor is aluminum, resulting in very high contact resistance. Since spot welding is typically used, the conductive contact area is relatively small, hindering electrical contact and increasing contact resistance. Consequently, the temperature of the contact area rises, severely impacting the normal operation and service life of the busbar trunking.

[0035] Rising temperatures in the contact area can have multiple impacts on the bus duct and the entire power transmission and distribution system. First, high temperatures can increase contact impedance, leading to increased power consumption, affecting the efficient use of electricity, and impacting the economic efficiency of the power system. Second, excessively high temperatures can cause thermal stress on the bus duct itself and its surrounding structures, potentially causing aging and reduced durability. They can even cause distribution line failures or fires, impacting the safe operation of the power system and, consequently, the stability and reliability of the entire system. Furthermore, due to contact resistance, the transmission of electrical energy can be affected, increasing power losses and thus impacting the efficiency of the power system.

[0036] To address, or at least partially address, the aforementioned issues and other potential issues with conventional busbar connections, embodiments of the present disclosure provide a busbar connection assembly, busbar assembly, and busbar box assembly for connecting busbars. According to the embodiments of the present disclosure, the busbar connection assembly includes a pair of conductive plates and a locking member for clamping and connecting a first busbar and a second busbar that are separated from each other and extend in the same direction.

[0037] Furthermore, each conductive plate includes three parts, namely a main body, a pair of coupling parts, and a positioning hole. Furthermore, the main body overlaps with the connecting part of the end of the first busbar and the second busbar, which can ensure that the main body covers the connecting part and forms a solid support base. The coupling part is in the extension direction of the main body and is located at the end of the main body. The coupling part is made of the same material as the connecting part of the first busbar and the second busbar, and is coupled to the main body by solid-liquid coupling or solid-solid coupling. Therefore, it can be ensured that a good contact is formed between the coupling part and the surface of the busbar to meet the low resistance connection. At the same time, the positioning hole is formed on the main body and is located in the middle of the main body in the extension direction. The locking piece is coupled in the positioning hole, and the locking and electrical connection of the first busbar and the second busbar are achieved by pressing a pair of coupling parts onto the surface of the connecting part of the first busbar and the second busbar respectively.

[0038] In this way, contact resistance can be avoided or reduced, excessive temperatures can be effectively prevented, the life of the bus duct can be increased, the stability and reliability of the system can be guaranteed, and the overall efficiency of the power system can be improved.

[0039] The following describes an example structure of connecting a busbar box assembly (i.e., the bus duct described above) via a busbar connection assembly 110 (i.e., the connector described above) with reference to Figures 1 to 7. In the power transmission and distribution industry, a busbar connection assembly 110 is a component used to connect two bus ducts.

[0040] Specifically, the busbar connection assembly 110 is made of metallic copper, a copper-aluminum composite material, or any other appropriate material, and has left and right ends in the direction of extension, which can respectively contact the ends of the two busbars. Specifically, the first busbar of the two busbars to be connected (for example, extending in the same direction) is inserted into one end of the busbar connection assembly 110 to ensure good electrical contact, and then one end of the second busbar is also connected to the other end of the busbar connection assembly 110. This ensures a reliable electrical connection between the two busbars. In this way, not only can the busbar connection assembly 110 ensure electrical contact between the busbars, but it also ensures the stability of the physical connection, thereby ensuring the safety and efficiency of the power system.

[0041] The following description will primarily focus on the case where the conductive plate 111 and busbars are made of a copper-aluminum composite material to describe the concepts of the present disclosure. It should be understood that the case of other busbars and connectors used in bus ducts is similar and will not be described separately below. For ease of description, the busbar box assembly in the embodiment of the present disclosure includes multiple busbar assemblies, which will be further explained below.

[0042] As shown in FIG. 1 to FIG. 7 , the busbar box assembly according to an embodiment of the present disclosure generally includes a busbar box 120 and a plurality of busbar assemblies.

[0043] Specifically, busbar box 120 is a sturdy and protective container, typically made of a fire-resistant and highly insulating material, such as plastic or metal. The size and shape of busbar box 120 are determined by the number and layout of installed busbars. Busbar box 120 can adapt to various environmental conditions and has sufficient strength to protect the electrical equipment inside from environmental impacts.

[0044] Then, multiple busbar assemblies are arranged inside the busbar box 120. Each busbar assembly is fixed inside the busbar box 120 to ensure that it remains stable during current transmission. At the same time, the busbar box 120 can be easily opened to inspect and maintain the busbar assemblies.

[0045] Therefore, the busbar box assembly can protect the busbar assembly and ensure stable current transmission, thereby ensuring stable operation of the power system. The busbar box assembly can accommodate multiple sets of busbar assemblies. Each set of busbar assemblies can correspond to a phase in the circuit.

[0046] The busbar assembly and busbar connection assembly 110 will be further described below in conjunction with Figures 1 to 7. A busbar assembly according to an embodiment of the present disclosure generally includes a busbar connection assembly 110 and a busbar group. The busbar group may include at least two busbars, each of which is electrically connected to a busbar connection assembly 110 through a channel.

[0047] The following discussion will primarily focus on how a pair of busbars in a busbar assembly is electrically connected using a busbar connection assembly. For ease of discussion, the pair of busbars to be connected includes a first busbar 121 and a second busbar 122. Each of the first busbar 121 and the second busbar 122 includes a connection portion 1211 and a power transmission portion for transmitting power. The power transmission portion is a primary component of the first busbar 121 or the second busbar 122, extending substantially the same length as the first busbar 121 or the second busbar 122. The connection portion 1211 and the power transmission portion can be integrally formed from the same material. In alternative embodiments, the power transmission portion can be made of a first material, such as aluminum or an aluminum alloy, while the connection portion 1211 is made of a second material, such as copper or a copper alloy. The following description primarily uses an example in which the connection portion 1211 and the power transmission portion are made of different materials to illustrate the concepts of the present disclosure. It should be understood that similar situations apply to other situations and will not be discussed separately below.

[0048] In such an embodiment, the connection portion 1211 is integrally formed at the adjacent ends of the first busbar 121 and the second busbar 122 via solid-liquid coupling or solid-solid coupling. This coupling ensures the strength and conductivity of the busbars while also making the connection between the busbars more stable and secure. Furthermore, busbar assemblies are typically arranged in parallel or staggered configurations, depending on the complexity of the power system and the desired current distribution method.

[0049] It's important to note that solid-liquid coupling is achieved through solid-liquid casting and rolling composite forming technology. This technology involves continuous casting and rolling of semi-solid metals. It aims to achieve an organic fusion of solid and liquid metals, improving the material's overall performance, including mechanical properties, durability, and stability.

[0050] Specifically, the metal is cast in a semi-solid state. Unlike traditional solid-state or liquid casting, the metal in this state is fluid and has a certain degree of shape retention. This semi-solid metal is then directly fed into a continuous rolling process. Through high-precision pressure control and temperature regulation, the metal material achieves the desired mechanical properties and microstructure.

[0051] Compared to traditional forming methods, the solidification process of solid-liquid casting-rolling hybrid forming technology is easier to control, effectively improving the material's formability and performance. Secondly, direct casting-rolling reduces process steps, improving production efficiency and reducing production costs. Finally, this technique often guides the transformation of acicular microstructure, thereby enhancing the metal's strength and toughness.

[0052] For example, the copper-aluminum eutectic strip is developed based on the traditional aluminum strip casting and rolling. It adopts a unique solid-liquid casting and rolling composite forming technology. During the process of aluminum liquid transforming from liquid phase to solid phase, the solid copper strip is simultaneously introduced. Through high temperature and high pressure rolling by casting rollers, the atoms at the interface of the two metals are infiltrated and crystallized together to form a unique copper-aluminum eutectic composite plate. Compared with the copper-aluminum composite plates produced by traditional cold rolling composite method, hot rolling composite method and explosive composite method, it has a subversive upgrade in peel strength, current carrying capacity, conductivity, tensile strength, shear strength and other properties. It is currently mainly used in new energy vehicle battery connectors.

[0053] Solid-solid coupling technology is also a composite forming technology that is mainly applicable to two or more materials with different properties. This technology is usually used to closely combine these different materials to form a complex that not only has the advantages of each component but also avoids or suppresses their disadvantages.

[0054] As a result, the busbars are connected as a single, stable unit, allowing current to flow seamlessly from the first busbar 121 to the second busbar 122 through the busbar connection assembly 110, thereby enabling power transmission and distribution and powering equipment. Furthermore, this connection method ensures safety and reliability, allowing the busbar system to maintain optimal performance under all circumstances, thereby achieving stable and secure power transmission and distribution.

[0055] In some embodiments, in constructing a stable and efficient busbar system, the connecting portion 1211 is located on the busbar and is a part of the busbar, and its purpose is to engage with the conductive plate 111 of the busbar connection assembly 110. The coupling portion 1111 of the busbar connection assembly 110, which will be described in detail below, is a part of the conductive plate 111 and is used to safely and effectively accommodate and support the connecting portion 1211 of the busbar.

[0056] The busbar connection assembly 110 according to an embodiment of the present disclosure will be described below in conjunction with Figures 3 to 5. The busbar connection assembly 110 according to an embodiment of the present disclosure generally includes a pair of conductive plates 111 and a locking member 112. Specifically, the locking member 112 enables the pair of conductive plates 111 to clamp and connect the busbars. As described above, each of the first and second busbars 121, 122 is provided with a busbar connection portion 1211, which can accommodate and tightly connect the first and second busbars 121, 122. The first and second busbars 121, 122 can extend along the same extension direction, thereby facilitating installation and maintenance of the conductive plates 111.

[0057] Furthermore, the locking member 112 secures and strengthens the connection between the busbars by locking the pair of conductive plates 111. Specifically, the locking member 112 tightly presses the pair of conductive plates 111 against the surfaces of the connecting portions 1211 of the first and second busbars 121, 122. This method securely locks the first and second busbars 121, 122 together while maintaining an unobstructed conductive path, achieving a stable and reliable electrical connection.

[0058] From the above description, it can be seen that busbar connection assembly 110 is designed to ensure stable and efficient power transmission performance for the busbar system. The combined use of conductive plate 111 and locking member 112 not only ensures that they can tightly connect the first busbar 121 and the second busbar 122, but also ensures smooth power transmission during this process, fully meeting the high safety and stability requirements of power facilities.

[0059] Furthermore, each conductive plate 111 in the pair of conductive plates 111 generally includes a body 1112, a pair of coupling portions 1111, and a positioning hole 1113. For example, the body 1112 is an aluminum conductor, and the coupling portions 1111 are copper conductors. These parts will be described in detail below.

[0060] Specifically, the main body 1112 of the conductive plate 111 can overlap with the connecting portion 1211 located at the adjacent ends of the first busbar 121 and the second busbar 122. This ensures sufficient contact area during current transmission, improves electrical conductivity, and also achieves a tight connection between the conductive plate 111 and the busbars.

[0061] A pair of coupling portions 1111 are arranged at the ends of the main body 1112 in the direction of extension. They are made of the same material as the surface of the connecting portions 1211 of the first busbar 121 and the second busbar 122. The coupling portions 1111 are connected to the main body 1112 through solid-liquid coupling or solid-solid coupling. Their contact with the busbars further enhances the electrical connection between the conductive plate 111 and the busbars. The electrical connection between the first busbar 121 and the second busbar 122 is established by clamping the connecting portions 1111 between the coupling portions 1111 of the conductive plate 111 of the busbar connection assembly 110.

[0062] Furthermore, a positioning hole 1113 is formed in a portion of the body 1112, located in the middle of the body 1112 in the extension direction. The positioning hole 1113 allows the locking member 112 to pass through and be fixed, thereby strengthening the structural and electrical connection between the conductive plate 111 and the busbar, thereby effectively and stably transmitting power.

[0063] In some embodiments, the connection portion 1211 is arranged along the entire side surface of the first busbar 121 or the second busbar 122 that is close to the conductive plate 111. This is done to achieve omnidirectional electrical coupling, that is, current can be transmitted across the entire contact surface between the connection portion 1211 and the conductive plate 111. This ensures higher conductivity because it provides a larger contact area, thereby reducing contact resistance and providing a stable and efficient current transmission path.

[0064] In addition, because the connecting portion 1211 covers the entire side of the busbar near the conductive plate 111, it actually provides a layer of protection for the conductive portion of the busbar, preventing wear and aging during long-term use.

[0065] In summary, the connection portion 1211 is arranged on the entire side of the first busbar 121 or the second busbar 122 close to the conductive plate 111, which not only improves the operating efficiency of the busbar system but also increases the service life and reliability of the busbar.

[0066] In actual use, when current passes through the busbar, it passes through the connector 1211, is transmitted to the busbar connection assembly 110 through the connector 1211, and then flows to other busbars through the busbar connection assembly 110. Because the connector 1211 is arranged close to the entire side of the conductive plate 111, this ensures that the conductive plate 111 can evenly receive and transmit the current from the busbar, avoiding heat concentration and overcurrent problems.

[0067] In some embodiments, the pair of coupling portions 1111 of the conductive plate 111 can effectively achieve electrical connection between the conductive plate 111 and the busbar. The extension length of each coupling portion 1111 in the extension direction is equal to the length of the connecting portion 1211 of the first busbar 121 or the second busbar 122 in the extension direction.

[0068] Specifically, equal extension lengths mean a larger contact area, which significantly improves electrical conduction efficiency, as resistance tends to decrease with increasing contact area. Furthermore, equal extension lengths help ensure close contact between the coupling portion 1111 and the busbar connection portion 1211, effectively improving system stability and reducing voltage fluctuations caused by poor contact.

[0069] In addition, since they are the same length, they only need to be aligned according to the predetermined position during installation, and there will be no misalignment due to length issues. Later maintenance is also more convenient because all the connection parts 1211 are of the same length, making it difficult to overlook any part during inspection and maintenance.

[0070] In some embodiments, the extension length of the coupling portion 1111 along the extension direction of the conductive plate 111 is at least three times the sum of the thicknesses of the body 1112 and the coupling portion 1111. For example, as shown in FIG4 , a is the thickness of the body 1112 coupled to the coupling portion 1111, b is the thickness of the coupling portion 1111, and c is the extension length, so c ≥ 3(a + b). In the disclosed embodiments, the extension length of the coupling portion 1111 may also be six or seven times the sum of the thicknesses of the body 1112 and the coupling portion 1111, without specific limitation.

[0071] Specifically, this arrangement ensures sufficient contact area between the coupling portion 1111 and the busbar, effectively reducing contact resistance and improving conductivity. Because conductivity efficiency and current transmission stability are often directly related to contact area, a larger contact area can reduce heat accumulation, while also reducing contact resistance and energy loss.

[0072] Furthermore, the length of coupling portion 1111 is at least three times the thickness of body 1112 and coupling portion 1111, providing more margin for error. For example, if the busbar is displaced or slightly deformed, this length is sufficient to ensure close contact between coupling portion 1111 and the busbar, mitigating safety risks associated with poor contact.

[0073] Furthermore, the longer coupling portion 1111 and the connecting portion are connected together to enhance the structural stability and durability of the conductive plate 111. Due to the greater length of the coupling portion 1111, it can more effectively bear pressure and reduce damage to the coupling portion 1111 or the body 1112 by dispersing the pressure.

[0074] In general, the extension length of the coupling part 1111 along the extension direction of the conductive plate 111 is at least 3 times the sum of the thicknesses of the main body 1112 and the coupling part 1111, which can fully balance the requirements of conductivity, safety and stability, and at the same time improve the performance and safety of the entire power facility.

[0075] In some embodiments, the thickness of the coupling portion 1111 is maintained within a range not greater than the thickness of the body 1112 on which the coupling portion 1111 is arranged, thereby helping to improve the performance of the conductive plate 111, increase the stability of the busbar connection assembly 110, and reduce maintenance costs.

[0076] In some embodiments, the conductive plates 111 are arranged to protrude from the body 1112 around the positioning holes 1113. The stoppers 1114 are used to ensure that the connection portion 1211 and the coupling portion 1111 are aligned after the busbar is inserted into the pair of conductive plates 111.

[0077] Specifically, stopper 1114 helps the busbar find the correct path and alignment point. When the busbar needs to be inserted into the conductive plate 111, stopper 1114 prevents the busbar from being inserted too deeply or tilted, ensuring precise alignment between the connecting portion 1211 and the coupling portion 1111. Simply move the busbar toward stopper 1114, guided by the shape of stopper 1114, to achieve accurate engagement with the conductive plate 111.

[0078] Furthermore, the stopper 1114 also serves a protective function. In actual operation, excessive force may be applied to the busbar when inserting the conductive plate 111, potentially damaging or deforming the connecting portion 1211 and the coupling portion 1111. However, the stopper 1114 effectively prevents this from happening by withstanding the insertion pressure and protecting the connecting portion 1211 and the coupling portion 1111 from damage.

[0079] Furthermore, the stopper 1114 also helps maintain the stability of the connection. After the busbar is inserted into the conductive plate 111, the alignment of the connecting portion 1211 with the coupling portion 1111 effectively locks the position, preventing the connection from becoming unstable due to movement or vibration of the busbar during power transmission, thereby ensuring the stability and safety of power transmission.

[0080] Therefore, the limiting block 1114 in the conductive plate 111 can enable the busbar to be accurately and stably inserted into the conductive plate 111 , thereby effectively improving the performance of the busbar connection assembly 110 .

[0081] In some embodiments, the ends of a pair of conductive plates 111 in the extension direction are formed with chamfers, which can improve the convenience of connecting and using the conductive plates 111, enhance the safety of the conductive plates 111 and increase their service life.

[0082] Chamfering is often used in engineering to process the edges of objects, making the edge transition smoothly from one surface to another, thus avoiding the formation of sharp edges. Specifically, by chamfering the ends of the pair of conductive plates 111 in the extension direction, the conductive plates 111 can be more smoothly connected during the docking process, reducing the phenomenon of hard insertion and jamming caused by sharp ends. This not only avoids possible damage to the interface during the plugging and unplugging process, but also makes the plugging and unplugging action easier, improving the user experience.

[0083] At the same time, chamfered edges also significantly improve safety during use. Sharp edges can easily scratch users or other equipment during use. The chamfered layout can largely eliminate such problems and ensure the safety of users and equipment.

[0084] Furthermore, the chamfers also help to enhance the durability of the conductive plate 111. Since the chamfers at the interface can smoothly disperse the stress distribution, so that the stress is not too concentrated at one point, the wear resistance of the conductive plate 111 is significantly improved, thereby extending its service life.

[0085] In some embodiments, the busbar box assembly further includes an insulating spacer 113. The insulating spacer 113 is disposed at least between the conductive plates 111 of the busbar connection assembly 110 of the plurality of busbar assemblies, ie, between one pair of conductive plates 111 and another pair of conductive plates 111.

[0086] The insulating barrier 113 is typically made of a material with high dielectric strength, such as porcelain, glass, special plastics, or bulk molding compound (BMC). It can be used to provide electrical isolation in electrical equipment to prevent arcing or surges, thereby ensuring the safety of the equipment and personnel.

[0087] In the busbar box assembly, insulating spacers 113 are disposed at least between the conductive plates 111 of the busbar connection assemblies 110 of the plurality of busbar assemblies. In actual operation, when the busbar assemblies are connected via the busbar connection assemblies 110, the insulating spacers 113 are installed between the conductive plates 111 of the connection assemblies, achieving physical isolation between the busbars and preventing direct current jumps.

[0088] With this configuration, the insulating partition 113 not only provides a protective barrier but also prevents short circuits between busbars, thereby helping to maintain the independence of each busbar so that current can be correctly directed along a designated path.

[0089] In summary, in practical applications, the contact resistance of the contact area between the busbar box assembly and the busbar connection assembly 110 in the embodiment of the present disclosure can be reduced by 60%, the temperature rise can be reduced by 10K, and the conductor material cost can be saved by 40%.

[0090] While various implementations of the present disclosure have been described above, the foregoing description is intended to be illustrative, not exhaustive, and not limited to the disclosed implementations. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described implementations. The terminology used herein is selected to best explain the principles of the implementations, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the various implementations disclosed herein.

Claims

1. A busbar connection assembly for connecting busbars, characterized in that: include: A pair of conductive plates (111) adapted to clamp and connect a first busbar (121) and a second busbar (122) separated from each other and extending in the same extension direction, wherein each conductive plate (111) in the pair of conductive plates (111) comprises: a body (1112) arranged to overlap a connecting portion (1211) located at ends of the first busbar (121) and the second busbar (122) adjacent to each other; a pair of coupling portions (1111) arranged at least at ends of the main body (1112) in the extension direction, the pair of coupling portions (1111) being respectively made of the same material as the surfaces of the connecting portions (1211) of the first busbar (121) and the second busbar (122) and coupled to the main body (1112) by solid-liquid coupling or solid-solid coupling; and a positioning hole (1113) formed on the body (1112) and located in the middle of the body (1112) in the extending direction; and A locking member (112) is coupled in the positioning hole (1113) to lock and electrically connect the first busbar (121) and the second busbar (122) by pressing the pair of coupling portions (1111) against the surfaces of the connecting portions (1211) of the first busbar (121) and the second busbar (122), respectively.

2. The busbar connection assembly according to claim 1, characterized in that: The extension length of each coupling portion (1111) in the pair of coupling portions (1111) in the extension direction is equal to the length of the connecting portion (1211) of the first busbar (121) or the second busbar (122) in the extension direction.

3. The busbar connection assembly according to claim 2, characterized in that: The extension length of the coupling portion (1111) along the extension direction of the conductive plate (111) is at least three times the sum of the thicknesses of the body (1112) and the coupling portion (1111).

4. The busbar connection assembly according to any one of claims 1 to 3, characterized in that: The thickness of the coupling portion (1111) is not greater than the thickness of the body (1112).

5. The busbar connection assembly according to any one of claims 1 to 3, characterized in that: The conductive plate (111) further comprises: A plurality of limiting blocks (1114) are arranged to protrude from the body (1112) around the positioning hole (1113).

6. The busbar connection assembly according to any one of claims 1 to 3, characterized in that: Ends of the pair of conductive plates (111) in the extending direction are chamfered.

7. A busbar assembly, characterized in that: include: The busbar connection assembly according to any one of claims 1 to 6; and A busbar group includes at least a first busbar (121) and a second busbar (122) extending in the same extension direction, wherein the first busbar (121) and the second busbar (122) each include a connecting portion (1211) and a power transmission portion for power transmission, wherein the connecting portion (1211) is formed at ends of the first busbar (121) and the second busbar (122) where the power transmission portions are close to each other. The connecting portion (1211) is adapted to be clamped between the coupling portions (1111) of the conductive plates (111) of the busbar connection assembly to establish an electrical connection between the first busbar (121) and the second busbar (122).

8. The busbar assembly according to claim 7, characterized in that: The connection portion (1211) is integrally formed at the ends of the first busbar (121) and the second busbar (122) where the power transmission portions are close to each other by means of solid-liquid coupling or solid-solid coupling.

9. The busbar assembly according to claim 7, characterized in that: The length of the connecting portion (1211) in the extending direction is equal to the extending length of the coupling portion (1111) in the extending direction.

10. The busbar assembly according to any one of claims 7 to 9, characterized in that: The connecting portion (1211) is arranged on the entire side of the first busbar (121) or the second busbar (122) close to the conductive plate (111) to electrically couple the conductive plate (111).

11. A busbar box assembly, characterized in that: include: busbar box (120); as well as A plurality of busbar assemblies according to any one of claims 7 to 10 are arranged in the busbar box (120).

12. The busbar box assembly according to claim 11, characterized in that: Also includes: An insulating spacer (113) is arranged at least between the conductive plates (111) of the busbar connection assemblies of the plurality of busbar assemblies.

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