Connection terminal and electric equipment

Abstract

The utility model relates to the technical field of electrical connection, and provides a connecting terminal and electric equipment. The connecting terminal comprises a male terminal and a female terminal, wherein the male terminal comprises a copper plugging section and an aluminum connecting section which are connected; the female terminal comprises an aluminum framework and a copper contact plate, a bayonet is formed at one end of the aluminum framework, the copper contact plate wraps the inner surface of the bayonet, and the copper plugging section can extend into the bayonet and is electrically connected with the copper contact plate. According to the connecting terminal provided by the embodiment of the invention, on one hand, the contact position of the male terminal and the female terminal is arranged to be the copper part of the copper plugging section and the copper contact plate, so that the stability of electric connection can be improved, and electrochemical corrosion is avoided; and on the other hand, the aluminum connecting section and the aluminum framework are made of aluminum, so that the weight of the connecting terminal can be greatly reduced, and the raw material cost of the connecting terminal is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical connection technical field especially relates to a connection terminal and electrical equipment. BACKGROUND

[0002] With the use of fast plug-in connection terminal more and more, male and female terminals adopt stamping process, and pure copper terminal becomes a commonly used connection terminal. In the traditional electrical connection technical field, the material of the terminal and the cable conductor is copper or copper alloy. On the one hand, the exploitation of copper reserves leads to the continuous rise of copper price and ultimately results in the increase of cable cost. On the other hand, the large quality of copper also limits the realization of cable lightweight.

[0003] Therefore, aluminum, aluminum alloy and other relatively large storage and relatively light quality conductive materials are used as cable conductor or terminal main material to realize the lightweight of electrical connection. However, due to the large electrode potential difference between copper and aluminum, when the copper terminal and the aluminum terminal are directly connected by contact, electrochemical corrosion will occur between the copper and aluminum terminals under the action of air and water. The aluminum terminal is easy to be corroded, which leads to the increase of contact resistance in the copper and aluminum connection area, and further causes serious consequences in electrical connection, such as contact failure, abnormal heating leading to fire, etc. SUMMARY

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a connection terminal and electrical equipment.

[0005] In the first aspect, the application provides a connection terminal, which can include: a male terminal including a copper plug-in segment and an aluminum connection segment connected together; a female terminal including an aluminum framework and a copper contact plate, one end of the aluminum framework is formed into a bayonet, the copper contact plate covers the inner surface of the bayonet, the copper plug-in segment extends into the bayonet and is electrically connected with the copper contact plate.

[0006] In this way, on the one hand, by setting the contact position of the male terminal and the female terminal as the copper material parts of the copper plug-in segment and the copper contact plate, the stability of electrical connection can be improved, and electrochemical corrosion can be avoided. On the other hand, the aluminum connection segment and the aluminum framework are made of aluminum material, which can greatly reduce the weight of the connection terminal and reduce the raw material cost of the connection terminal.

[0007] In some embodiments of the application, the bayonet includes a first side plate, a second side plate and a connecting plate, the first side plate, the connecting plate and the second side plate are connected in turn, the first side plate and the second side plate are arranged opposite to each other, and the copper plug-in segment is clamped between the first side plate and the second side plate.

[0008] In some embodiments of this application, the copper contact plate includes a first contact plate that covers the inner surface of the first side plate, and the first contact plate includes a first extension that extends out of the bayonet.

[0009] In some embodiments of this application, the first extension includes a first protrusion located on the side of the first side plate opposite to the connecting plate, and the first protrusion abuts against the end face of the first side plate.

[0010] In some embodiments of this application, the copper contact plate includes a second contact plate that covers the inner surface of the second side plate, and the second contact plate includes a second extension that extends out of the bayonet.

[0011] In some embodiments of this application, the second extension includes a second protrusion located on the side of the second side plate opposite to the connecting plate, and the second protrusion abuts against the end face of the second side plate.

[0012] In some embodiments of this application, the aluminum frame further includes a copper busbar connecting section disposed at the end of the female terminal away from the bayonet; and a copper contact piece attached to the outer surface of the copper busbar connecting section.

[0013] In some embodiments of this application, the female terminal further includes a copper contact spring, which is sandwiched between the copper plug section and the copper contact plate.

[0014] In some embodiments of this application, the aluminum frame further includes a main body segment, one end of which is connected to the bayonet and the other end of which is connected to the copper busbar connecting segment.

[0015] Secondly, this application also provides an electrical device that may include a connection terminal, a first electrical component, and a second electrical component as described in any of the above embodiments. The first electrical component is electrically connected to the male terminal of the connection terminal, and the second electrical component is electrically connected to the female terminal of the connection terminal.

[0016] The technical effects of any design scheme in the second aspect can be seen in the technical effects of different design methods in the first aspect, and will not be repeated here. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the connection terminals provided in some embodiments of this application;

[0020] Figure 2 for Figure 1 A schematic diagram of the male terminal shown;

[0021] Figure 3 for Figure 1 A schematic diagram of the female terminal shown.

[0022] Figure label:

[0023] 100. Connecting terminals;

[0024] 110. Male terminal; 111. Copper plug section; 112. Aluminum connector section;

[0025] 120. Female terminal; 121. Aluminum frame; 1211. Bayonet; 1212. First side plate; 1213. Second side plate; 1214. Connecting plate; 1215. Main body section; 1216. Copper busbar connecting section; 122. Copper contact plate; 1221. First contact plate; 1222. Second contact plate; 1223. Third contact plate; 1224. First extension section; 1225. Second extension section; 1226. First protrusion; 1227. Second protrusion; 123. Copper contact piece; 124. Copper contact spring; 1241. Barb;

[0026] 200. First electrical component;

[0027] 300. Second electrical component. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0030] With the increasing use of quick-connect electrical terminals, both male and female terminals are produced using a stamping process, making pure copper terminals a commonly used type of terminal. In the traditional field of electrical connection technology, both terminals and cable conductors are made of copper or copper alloys. On the one hand, the limited reserves of copper have led to a continuous rise in copper prices, ultimately increasing cable costs. On the other hand, the large weight of copper itself also limits the achievement of lightweight cables.

[0031] Therefore, conductive materials such as aluminum and aluminum alloys, which have relatively large storage capacity and relatively light weight, are used as the main body material for cable conductors or terminals to achieve lightweight electrical connections. However, due to the large electrode potential difference between copper and aluminum, when copper male terminals and aluminum female terminals, or aluminum male terminals and copper female terminals, are directly connected in contact, electrochemical corrosion will occur between the copper and aluminum terminals under the influence of air and water. Aluminum terminals are susceptible to corrosion, leading to increased contact resistance in the copper-aluminum connection area. This can result in serious consequences in electrical connections, such as contact failure, abnormal heating leading to fires, etc.

[0032] To resolve the above issues, please refer to Figures 1 to 3 This application provides an electrical device that may include a connection terminal 100, a first electrical component 200, and a second electrical component 300.

[0033] Please refer to Figure 1 and Figure 2 The connecting terminal 100 may include a male terminal 110 and a female terminal 120. Specifically, the male terminal 110 is formed into a strip shape and may include a copper plug section 111 and an aluminum connecting section 112 connected together. The copper plug section 111 and the aluminum connecting section 112 are sequentially connected along the length of the male terminal 110. The aluminum connecting section 112 is connected to the first electrical component 200 to realize the electrical connection with the first electrical component 200. The copper plug section 111 cooperates with the female terminal 120 to realize the electrical connection with the female terminal 120.

[0034] Furthermore, the first electrical component 200 is formed as an aluminum conductor, and the electrical connection between the aluminum connecting section 112 and the aluminum conductor can be achieved by welding.

[0035] Specifically, this can be achieved through ultrasonic welding, which is highly efficient, low-cost, and easy to control in terms of quality. Furthermore, the use of the same material for the aluminum conductor and the aluminum connecting section 112 ensures the stability of the electrical connection and mitigates electrochemical corrosion.

[0036] Please see Figures 1 to 3 The female terminal 120 may include an aluminum frame 121 and a copper contact plate 122. One end of the aluminum frame 121 is formed as a bayonet 1211, and the copper contact plate 122 covers the inner surface of the bayonet 1211.

[0037] Specifically, the bayonet 1211 is formed in a "U" shape. The bayonet 1211 may include a first side plate 1212, a second side plate 1213 and a connecting plate 1214. The first side plate 1212, the connecting plate 1214 and the second side plate 1213 are connected in sequence, and the first side plate 1212 and the second side plate 1213 are arranged opposite to each other.

[0038] The copper contact plate 122 may include a first contact plate 1221, a second contact plate 1222 and a third contact plate 1223. The first contact plate 1221 covers the inner surface of the first side plate 1212, the second contact plate 1222 covers the inner surface of the second side plate 1213, and the third contact plate 1223 covers the inner surface of the connecting plate 1214.

[0039] The copper plug section 111 can extend into the bayonet 1211 and be electrically connected to the copper contact plate 122. Specifically, the copper plug section 111 is sandwiched between the first side plate 1212 and the second side plate 1213. The second electrical component 300 is electrically connected to the aluminum frame 121. The male terminal 110 and the female terminal 120 are electrically connected to the copper plug section 111 through the copper contact plate 122.

[0040] Furthermore, the male terminal 110 and female terminal 120 adopt a copper-aluminum composite structure. The female terminal 120 adopts a copper-aluminum composite material, which is produced by extrusion molding or casting process. That is, the copper contact plate 122 is made of copper or copper alloy material, and the aluminum frame 121 is made of aluminum or aluminum alloy material. The male terminal 110 adopts a copper-aluminum composite material stamping process. The copper plug section 111 is made of copper or copper alloy, and the aluminum connecting section 112 is made of aluminum or aluminum alloy. The use of copper-aluminum composite material stamping process for the male terminal 110 solves the problems of high cost and heavy weight of traditional pure copper male and female terminals 120, as well as electrochemical corrosion between copper male terminals 110 and aluminum wires. It should be noted that the extrusion molding and casting processes will eliminate air and water between the copper and aluminum terminals, and atoms will directly interpenetrate.

[0041] In this way, on the one hand, by setting the contact position between the male terminal 110 and the female terminal 120 as copper components of the copper plug section 111 and the copper contact plate 122, the stability of the electrical connection of the connection terminal 100 can be improved and electrochemical corrosion can be avoided.

[0042] On the other hand, the aluminum connecting section 112 and the aluminum frame 121 are made of aluminum, which can greatly reduce the weight of the connecting terminal 100 and reduce the raw material cost of the connecting terminal 100.

[0043] In some embodiments of this application, please refer to Figure 3The first extension section 1224 extends out to form a bayonet 1211. In this way, by setting the first extension section 1224, the contact between the copper plug section 111 and the aluminum first side plate 1212 can be avoided, which would lead to an unstable electrical connection between the male terminal 110 and the female terminal 120.

[0044] Furthermore, the second extension section 1225 extends into the bayonet 1211. In this way, by setting the second extension section 1225, the copper plug section 111 can be prevented from contacting the aluminum second side plate 1213, which would cause the electrical connection between the male terminal 110 and the female terminal 120 to be unstable.

[0045] Understandably, please continue reading. Figure 3 In some embodiments of this application, while the first extension segment 1224 extends out of the bayonet 1211, the second extension segment 1225 also extends out of the bayonet 1211.

[0046] Please refer to some embodiments of this application. Figure 3 The first extension 1224 may include a first protrusion 1226, which is located on the side of the first side plate 1212 opposite to the connecting plate 1214, and abuts against the end face of the first side plate 1212. It should be noted that the copper contact plate 122 and the aluminum frame 121 are formed by extrusion molding or casting. By providing the first protrusion 1226, the contact area between the first contact plate 1221 and the first side plate 1212 can be increased, thereby increasing the tightness and stability of the fit between the first side plate 1212 and the first contact plate 1221.

[0047] Furthermore, the second extension 1225 may include a second protrusion 1227, which is located on the side of the second side plate 1213 opposite to the connecting plate 1214, and abuts against the end face of the second side plate 1213. Thus, by providing the second protrusion 1227, the contact area between the second contact plate 1222 and the second side plate 1213 can be increased, thereby increasing the tightness and stability of the fit between the second side plate 1213 and the second contact plate 1222.

[0048] Please refer to other embodiments of this application. Figure 3 The first extension 1224 includes a first protrusion 1226, while the second extension 1225 also includes a second protrusion 1227.

[0049] Please refer to some embodiments of this application. Figure 3The aluminum frame 121 is formed in a strip shape, with one end forming a bayonet 1211 and the other end forming a copper busbar connecting section 1216. The copper busbar connecting section 1216 is used for electrical connection with the electrical copper busbar of the second electrical component 300. The connecting terminal 100 also includes a copper contact piece 123, which is attached to the outer surface of the copper busbar connecting section 1216 and used for electrical connection with the electrical copper busbar of the second electrical component 300. This ensures that the materials of the electrical connection structure between the female terminal 120 and the second electrical component 300 are the same, thus ensuring the stability of the electrical connection between the second electrical component 300 and the female terminal 120.

[0050] Specifically, there are two copper contact pieces 123, which are respectively attached to the opposite two sides of the copper busbar connection section 1216 to meet the electrical connection requirements of the electrical copper busbar of the second electrical component 300.

[0051] Among them, the copper contact piece 123 can be made of copper or copper alloy.

[0052] In some embodiments of this application, the connecting terminal 100 may further include a copper contact spring 124, which is sandwiched between the copper plug section 111 and the copper contact plate 122. Specifically, the copper contact spring 124 is formed in a "U" shape and is sleeved on the inner surface of the copper contact plate 122. The two ends of the copper contact spring 124 are formed as barbs 1241 and are sleeved on the outer side of the copper contact plate 122. This ensures the stability of the fit between the copper contact spring 124 and the copper contact plate 122.

[0053] The copper contact spring 124 can be made of copper or a copper alloy.

[0054] In one embodiment of this application, please continue to refer to Figure 3 The aluminum frame 121 may also include a main body section 1215, one end of which is connected to the bayonet 1211 and the other end is connected to the copper busbar connecting section 1216. The main body section 1215 is used to provide an installation position for the assembly of other components in the electrical equipment.

[0055] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "bottom", "inner", "outer", etc., 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0057] In the description of the embodiments of this utility model, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this utility model generally indicates that the preceding and following related objects have an "or" relationship.

[0058] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection. Furthermore, the directional terms mentioned in the embodiments of this utility model, such as "inner" and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, 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 utility model.

[0059] In the description of embodiments of this utility model, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0060] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting terminal, characterized in that, include: Male terminal, including connected copper plug section and aluminum connecting section; The female terminal includes an aluminum frame and a copper contact plate. One end of the aluminum frame is formed into a bayonet. The copper contact plate covers the inner surface of the bayonet. The copper plug section extends into the bayonet and is electrically connected to the copper contact plate.

2. The connection terminal according to claim 1, characterized in that, The bayonet includes a first side plate, a second side plate, and a connecting plate. The first side plate, the connecting plate, and the second side plate are connected in sequence. The first side plate and the second side plate are arranged opposite to each other. The copper plug section is sandwiched between the first side plate and the second side plate.

3. The connecting terminal according to claim 2, characterized in that, The copper contact plate includes a first contact plate that covers the inner surface of the first side plate. The first contact plate includes a first extension that extends out of the bayonet.

4. The connecting terminal according to claim 3, characterized in that, The first extension includes a first protrusion located on the side of the first side plate opposite to the connecting plate, and the first protrusion abuts against the end face of the first side plate.

5. The connecting terminal according to claim 2, characterized in that, The copper contact plate includes a second contact plate that covers the inner surface of the second side plate. The second contact plate includes a second extension that extends out of the bayonet.

6. The connecting terminal according to claim 5, characterized in that, The second extension includes a second protrusion located on the side of the second side plate away from the connecting plate, and the second protrusion abuts against the end face of the second side plate.

7. The connecting terminal according to claim 1, characterized in that, The aluminum frame also includes a copper busbar connecting section, which is located at the end of the female terminal away from the bayonet. A copper contact piece is attached to the outer surface of the copper busbar connection section.

8. The connecting terminal according to claim 7, characterized in that, The aluminum frame also includes: The main body segment has one end connected to the bayonet and the other end connected to the copper busbar connecting segment.

9. The connecting terminal according to claim 1, characterized in that, The female terminal also includes a copper contact spring, which is sandwiched between the copper plug section and the copper contact plate.

10. An electrical appliance, characterized in that, include: The connecting terminal according to any one of claims 1-9; A first electrical component, which is electrically connected to the male terminal of the connecting terminal; The second electrical component is electrically connected to the female terminal of the connection terminal.

Images