Connecting assembly and current conduction piece for new energy automobile

Abstract

The utility model discloses a connecting assembly and a current conduction piece for a new energy automobile, and the connecting assembly is connected between a first base material and a second base material through a fastener ((a bolt and a nut) or a stud or a screw or (a screw rod and a nut)), a spring piece and an enlarged and thickened flat gasket. The electric contact area can be effectively increased, the contact pressure of terminating can be kept, and effective terminating connection is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle connection, in particular to a connection component and a current conduction component for new energy vehicles. Background Art

[0002] In the prior art, new energy vehicles gradually use aluminum instead of copper for current transmission. The end - connection reliability between aluminum and copper / aluminum connectors has received more and more attention. Due to the large differences in core performance parameters such as mechanical properties and thermal expansion coefficients between copper and aluminum, general fastener connections cannot effectively avoid the influence brought by stress relaxation and creep after long - term use of copper / aluminum connections, which easily leads to connection failure.

[0003] Currently, the end - connection between aluminum and copper / aluminum connectors simply relies on locking with ordinary standard connectors. This locking method cannot effectively reduce the influence brought by material creep and stress relaxation, and there is no way to effectively detect and monitor the reliability of the end - connection. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a connection component and a current conduction component for new energy vehicles, which can effectively reduce the influence of material creep and stress relaxation on end - connection reliability.

[0005] The technical solution adopted by the utility model to solve the above - mentioned technical problems is as follows:

[0006] A connection component includes a fastener capable of connecting a first base material and a second base material together. The material of the second base material is copper or aluminum, and a spring plate and a flat gasket are penetrated through the fastener.

[0007] The spring plate is a disc spring or a coil spring.

[0008] Further, a sensor is also penetrated through the fastener.

[0009] Further, the sensor is any one or several of a temperature sensor, a torque sensor, a resistance sensor, and a pressure sensor.

[0010] Further, the fastener includes a bolt and a nut. The sensor is pressed between the nut and the second base material, and the spring plate and the flat gasket are pressed between the nut and the first base material.

[0011] Further, the nut, the flat gasket, and the spring plate form a combination.

[0012] Further, the fastener is a screw or a stud.

[0013] Further, the spring piece, flat gasket and sensor are pressed between the fastener nut and the first substrate.

[0014] Further, the fastener, spring piece and flat gasket form an assembly.

[0015] Further, the fastener, spring piece, flat gasket and sensor form an assembly.

[0016] Further, the fastener is a screw and a nut.

[0017] Further, the spring piece, flat gasket and sensor are pressed between the nut and the first substrate.

[0018] Further, the nut, spring piece and flat gasket form an assembly.

[0019] Further, the nut, spring piece, flat gasket and sensor form an assembly.

[0020] Further, the thickness of the flat gasket is not less than 0.5 mm.

[0021] On the other hand, the present utility model provides a current conduction member for a new energy vehicle, including a first substrate, a second substrate and the above-mentioned connection assembly.

[0022] Further, a protective coating is provided on at least one of the upper and lower end faces of the first substrate;

[0023] and / or;

[0024] A protective coating is provided on at least one of the upper and lower end faces of the second substrate.

[0025] Further, the upper end face and / or the lower end face of the first substrate is a termination face, the upper end face and / or the lower end face of the second substrate is also a termination face, and a protective agent is provided on the termination face of the first substrate and / or the second substrate.

[0026] Advantageous effects:

[0027] As described above, a connection assembly and a current conduction member for a new energy vehicle according to the present utility model have the following advantageous effects:

[0028] 1). The connection assembly in the present utility model includes a fastener, a spring piece and a thickened and enlarged flat gasket, which can effectively increase the electrical contact area and maintain the contact pressure of the termination, form an effective termination connection, and reduce the influence of material creep and stress relaxation on the termination reliability.

[0029] 2) There is also a sensor between the nut of the fastener and the second base material or between the nut of the fastener and the first base material. The reliability of the termination is monitored by the feedback signal of the sensor. When the feedback signal or information exceeds the range recognized as the reliability of the termination after judgment, the whole vehicle will carry out protection or power off according to the strategy to ensure the safety of people and vehicles.

[0030] 3) The flat gasket, spring piece (and sensor) in the connection component of the present utility model can be combined with the fastener into an assembly. The form of the assembly is not only convenient for installation, but also makes the connection more firm and easier to achieve reliable connection.

[0031] 4) The connection component in the present utility model has a simple structure and low production cost.

[0032] 5) In the current conduction component of the present utility model, a protective coating is provided on at least one of the upper and lower end faces of the first base material and / or the second base material. The first base material and / or the second base material can be protected by setting the protective coating. A protective agent is provided on the termination surface of the first base material and / or the second base material. The provided protective agent can protect the termination surface.

[0033] The present utility model will be further described in detail below in conjunction with the accompanying drawings of the embodiments and specific embodiments. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the accompanying drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is one of the structural schematic diagrams of the connection component in one of the embodiments of the present utility model.

[0036] Figure 2 It is the second structural schematic diagram of the connection component in another embodiment of the present utility model.

[0037] Figure 3 It is the second structural schematic diagram of the connection component in still another embodiment of the present utility model.

[0038] Figure 4 It is a schematic diagram of sensor information feedback.

[0039] Illustration marks: 1, nut; 2, spring piece; 3, flat gasket; 4, first base material; 5, second base material; 6, bolt; 7, sensor; 8, screw; 9, screw rod. Detailed Embodiment

[0040] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0041] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape and size of the components in actual implementation. The types, quantities and proportions of the components in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0042] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have a technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the efficacy that the present utility model can produce and the purpose that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present utility model.

[0043] The present utility model discloses a connection component and a current conduction component for a new energy vehicle. For the convenience of description, the connection component and the current conduction component will be described separately below.

[0044] First, the connection component will be described in detail.

[0045] By using fasteners, spring pieces 2 and enlarged and thickened flat gaskets 3 to form a connection component between the first substrate 4 and the second substrate 5, the electrical contact area can be effectively increased and the contact pressure of the termination can be maintained, forming an effective termination connection. Among them, the form of the fastener is not limited, and it can be a combination of a bolt and a nut, a combination of a screw rod and a nut, or a stud or a screw.

[0046] A sensor 7 is also provided between the nut of the fastener and the second substrate 5 or between the nut of the fastener and the first substrate 4. The reliability of the termination is monitored by the signal or information fed back by the sensor 7. When the fed-back signal is judged to exceed the range recognized by the reliability of the termination, the whole vehicle performs protection or power-off according to the strategy to ensure the safety of people and vehicles. Specifically, the fed-back signal can be an analog signal, or CAN, LIN and other signal chips and corresponding processing chips can be installed to convert it into a digital signal, which can be directly transmitted to the whole vehicle or transmitted to the area controller.

[0047] The feedback information can be one or a combination of several of the following: the torque is lower than a certain value, the current-carrying temperature rise rate exceeds a certain upper limit, the resistance is higher than a certain value, or the pressure is lower than a certain value. It can also directly feedback the true measured value or the data after conversion and correction. See Figure 4 。

[0048] It should be noted that the sensor 7 in the present utility model is any one or a combination of a temperature sensor, a torque sensor, a resistance sensor, and a pressure sensor. It can be used alone or integrated with other devices. The contact part can be made of copper, aluminum, steel, other alloy materials, or composite materials.

[0049] Among them, the first substrate 4 can be any one of materials mainly based on aluminum such as pure aluminum, aluminum alloy, and aluminum-clad copper.

[0050] The second substrate 5 can be any one of copper or aluminum materials.

[0051] It should be noted that the spring piece 2 is a disc spring or a plate spring. The selected disc spring or plate spring should have high strength limit, yield limit, elastic limit, and fatigue limit. At the same time, it is required to have high impact toughness, plasticity, and as high a yield ratio as possible.

[0052] Correspondingly, the present utility model selects a thickened and enlarged flat gasket 3 with a thickness of not less than 0.5 mm. At the same time, its use area is as large as possible while ensuring the contact pressure. Its material can be made of copper, aluminum, steel, or other alloy materials or composite materials.

[0053] As one of the embodiments of the present utility model, the connection assembly includes a bolt 6, a nut 1, a spring piece 2, and a flat gasket 3. Among them, the free end of the bolt 6 sequentially passes through the second substrate 5 and the first substrate 4, and then is fastened by the nut 1. That is, the attached drawing is similar to Figure 1 but only differs in that the sensor 7 is not installed.

[0054] As a specific embodiment of the present utility model, please refer to Figure 1 , the connection assembly includes a bolt 6, a nut 1, a spring piece 2, a flat gasket 3, and a sensor 7. Among them, the free end of the bolt 6 sequentially passes through the sensor 7, the second substrate 5, and the first substrate 4, and then is fastened by the nut 1.

[0055] Specifically, the sensor 7 is pressed between the nut of the bolt 6 and the second substrate 5, and the spring piece 2 and the flat gasket 3 are pressed between the nut 1 and the first substrate 4.

[0056] As a preferred solution in this embodiment, adjacent components in the connection assembly can be prefabricated into one body and set as a combined component. For example, the nut 1, the flat gasket 3, and the spring piece 2 can form a combined component, which is not only convenient for installation, but also makes the connection more firm and easier to achieve a reliable connection. The combined component is as shown by the dashed box in Figure 1 as follows.

[0057] As another specific embodiment of the present invention, please refer to Figure 2 . The connection assembly includes a screw 8, a spring piece 2, an enlarged and thickened flat gasket 3, and a sensor 7. Among them, the free end of the screw 8 passes through the first base material 4 and is threadedly connected to the second base material 5. Specifically, the spring piece 2, the flat gasket 3, and the sensor 7 are all pressed between the nut of the screw 8 and the first base material 4.

[0058] As a preferred solution in this embodiment, adjacent components in the connection assembly can be set as a combined component. For example, the screw 8, the spring piece 2, and the flat gasket 3 can form a combined component, and the sensor 7 is inserted through the screw 8 of the combined component. Or the screw 8, the spring piece 2, the flat gasket 3, and the sensor 7 together form a combined component. This way of combined component is not only convenient for installation, but also makes the connection more firm and easier to achieve a reliable connection. The combined component is as shown by the dashed box in Figure 2 as follows.

[0059] As yet another specific embodiment of the present invention, please refer to Figure 3 . The connection assembly includes a screw rod 9, a nut 1, a spring piece 2, an enlarged and thickened flat gasket 3, and a sensor 7. Among them, one end of the screw rod 9 passes through the first base material 4 and is threadedly connected to the second base material 5. Specifically, the spring piece 2, the flat gasket 3, and the sensor 7 are all pressed between the nut 1 and the first base material 4.

[0060] As a preferred solution in this embodiment, adjacent components in the connection assembly can be set as a combined component. For example, the nut 1, the spring piece 2, and the flat gasket 3 can form a combined component, and the sensor 7 and the combined component are both arranged on the screw rod 9. Or the nut 1, the spring piece 2, the flat gasket 3, and the sensor 7 can directly form a combined component. This way of setting as a combined component is not only convenient for installation, but also makes the connection more firm and easier to achieve a reliable connection. The combined component is as shown by the dashed box in Figure 3 as follows.

[0061] It should be noted that the connection assembly in the present invention is applicable to the connection between the second base material 5 and the first base material 4 of new energy vehicles, and is also applicable to the connection between connectors.

[0062] Secondly, the current conduction member will be elaborated in detail.

[0063] In addition to the above-mentioned connection components, the current conduction component in the present utility model further includes a first base material 4 and a second base material 5. The part about the connection components will not be elaborated here, and the first base material 4 and the second base material 5 will be described below.

[0064] The upper and lower end faces of the first base material 4 and / or the second base material 5 can be simultaneously provided with a protective coating or only one side is provided with a protective coating. The upper end face and / or the lower end face of the first base material 4 is an end connection face, and the upper end face and / or the lower end face of the second base material 5 is also an end connection face. A protective agent is provided on the end connection face of the first base material 4 and / or the second base material 5 to protect the end connection face, avoid the risk of electrochemical corrosion or contact oxidation, and enhance the current conductivity.

[0065] Specifically, the protective coating can be gold plating, silver plating, nickel plating, tin plating, or nickel plating first and then gold plating, silver plating, tin plating, etc.

[0066] The protective agent added on the end connection face can be one or several of electric compound grease, switch grease, conductive grease, conductive paste, coating protective agent, lubricating oil, and sealing grease.

[0067] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0068] The above provides a detailed introduction to an application for connection components and current conduction components of the present utility model. Specific examples are used in this article to elaborate on the principle and specific implementation manner of the present utility model. The above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A connection assembly, characterized in that: It comprises a fastener capable of connecting a first substrate (4) and a second substrate (5) together, the first substrate (4) being made of aluminum, the second substrate (5) being made of copper or aluminum, and the fastener being provided with a spring sheet (2) and a flat gasket (3); The spring leaf (2) is a disc spring or a disk spring.

2. A connection assembly according to claim 1, characterized in that: The fastener is also provided with a sensor (7).

3. A connection assembly according to claim 2, characterized in that: The sensor (7) is any one or more of a temperature sensor, a torque sensor, a resistance sensor, and a pressure sensor.

4. A connection assembly according to claim 2, characterized in that: The fastener comprises a bolt (6) and a nut (1), the sensor (7) is pressed between the nut and the second substrate (5), and the spring sheet (2) and the flat gasket (3) are pressed between the nut (1) and the first substrate (4).

5. A connection assembly according to claim 4, characterized in that: The nut (1), the flat washer (3) and the spring sheet (2) form an assembly.

6. A connection assembly according to claim 2, characterized in that: The fastener is a screw (8) or a stud.

7. A connection assembly according to claim 6, characterized in that: The spring sheet (2), the flat gasket (3) and the sensor (7) are pressed between the fastener nut and the first substrate (4).

8. A connection assembly according to claim 7, characterized in that: The fastener, the spring sheet (2) and the flat gasket (3) form a combined component.

9. A connection assembly according to claim 7, characterized in that: The fastener, the spring sheet (2), the flat gasket (3) and the sensor (7) form an assembly.

10. A connection assembly according to claim 2, characterized in that: The fasteners are a screw rod (9) and a nut (1).

11. A connection assembly according to claim 10, characterized in that: The spring sheet (2), the flat gasket (3) and the sensor (7) are pressed between the nut (1) and the first substrate (4).

12. A connection assembly according to claim 11, characterized in that: The nut (1), the spring sheet (2) and the flat gasket (3) form an assembly.

13. A connection assembly according to claim 11, characterized in that: The nut (1), the spring sheet (2), the flat washer (3) and the sensor (7) form an assembly.

14. A connection assembly according to claim 1, characterized in that: The thickness of the flat gasket (3) is not less than 0.5 mm.

15. A current conducting component for new energy vehicles, characterized in that: It comprises a first substrate (4), a second substrate (5) and the connection assembly according to any one of claims 1 to 14.

16. A current conducting component for new energy vehicles according to claim 15, characterized in that: A protective coating is provided on at least one of the upper and lower end surfaces of the first substrate (4); and / or; A protective coating is provided on at least one of the upper and lower end surfaces of the second substrate (5).

17. A current conducting component for new energy vehicles according to claim 16, characterized in that: The upper end surface and / or the lower end surface of the first substrate (4) is a terminal surface, and the upper end surface and / or the lower end surface of the second substrate (5) is also a terminal surface. A protective agent is provided on the terminal surfaces of the first substrate (4) and / or the second substrate (5).

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