Electric connection structure for charging equipment, charging equipment and vehicle

Abstract

The invention provides an electric connection structure for charging equipment, the charging equipment and a vehicle. An electrical connection structure for a charging device, comprising: a circuit board; the signal terminal is provided with a first clamping assembly; the conductive elastic sheet is connected with the circuit board, the conductive elastic sheet is provided with a second clamping assembly, and the second clamping assembly and the first clamping assembly have a clamping state in which the second clamping assembly and the first clamping assembly are connected with each other and a separation state in which the second clamping assembly and the first clamping assembly are separated from each other; when the second clamping assembly and the first clamping assembly are in a clamping state, the signal terminal and the circuit board form an electric signal transmission line through the conductive elastic piece. According to the embodiment of the invention, an electric connection structure and a mechanical connection structure of the signal terminal and the circuit board are simultaneously realized through the conductive elastic sheet, an additional terminal fixing piece is canceled, the assembly process is simplified, the material cost and the manufacturing process are reduced, the problem that the number of parts in the signal terminal connection structure is too large is solved, and the manufacturing cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of charging equipment technology, and more specifically, to an electrical connection structure for a charging device, a charging device, and a vehicle. Background Technology

[0002] In existing technologies, the charging dock, as an indispensable key component in the charging function of new energy vehicles, is like the "nerve center" of the charging system. Its structure and design directly determine whether the AC / DC charging function of the entire vehicle can operate stably and efficiently. In the current booming development of the new energy vehicle industry, the charging dock not only undertakes the basic task of power transmission, but also needs to meet diverse communication needs. Its performance directly affects the user's charging experience and the overall safety of the vehicle.

[0003] Currently, the electrical connection structure of signal terminals mainly consists of three precision components: the signal terminal itself serves as the carrier of information transmission, the terminal fixing component provides structural support and positioning, and the contact springs on the PCB (printed circuit board) enable the final conduction of electrical signals. In actual assembly, the signal terminal is fixed to the terminal fixing component through a precisely designed snap-fit ​​structure, forming a stable mechanical connection; subsequently, the conductive part of the signal terminal forms elastic pressure contact with the pre-designed elastic contact piece on the PCB, thereby completing the reliable transmission of electrical signals.

[0004] Existing signal terminal connection structures require the independent design of multiple parts such as signal terminals, fasteners, and springs, which not only increases material management costs but also enhances the complexity of the assembly process. At the same time, the multi-part structure leads to an exponential increase in mold development costs, raw material consumption, and manufacturing process difficulty, especially in large-scale production, where this cost disadvantage is even more pronounced.

[0005] There is currently no effective solution to the aforementioned technical problems. Summary of the Invention

[0006] The main objective of this invention is to provide an electrical connection structure for charging equipment, a charging device, and a vehicle, so as to solve the problem of excessive number of components in the signal terminal connection structure in the prior art.

[0007] To achieve the above objectives, according to one aspect of the present invention, an electrical connection structure for a charging device is provided, comprising: a circuit board; a signal terminal having a first snap-fit ​​component; a conductive spring connected to the circuit board, the conductive spring having a second snap-fit ​​component, the second snap-fit ​​component and the first snap-fit ​​component having a snap-fit ​​state of mutual connection and a separate state of mutual separation; wherein, when the second snap-fit ​​component and the first snap-fit ​​component are in the snap-fit ​​state, the signal terminal forms an electrical signal transmission line with the circuit board through the conductive spring.

[0008] Furthermore, the first snap-fit ​​component has a snap-fit ​​space, and when the second snap-fit ​​component is in a snap-fit ​​state with the first snap-fit ​​component, at least a portion of the second snap-fit ​​component extends into the snap-fit ​​space and contacts the side wall of the snap-fit ​​space.

[0009] Furthermore, the first snap-fit ​​assembly includes a slot, which is formed on the outer peripheral surface of the signal terminal and extends circumferentially along the signal terminal. The second snap-fit ​​assembly includes a tab, which extends into the slot and contacts the slot wall when the second snap-fit ​​assembly and the first snap-fit ​​assembly are in a snap-fit ​​state.

[0010] Furthermore, the first snap-fit ​​assembly includes two slots, both of which extend circumferentially along the signal terminal and are symmetrically arranged about the radial direction of the signal terminal. The second snap-fit ​​assembly includes two tabs, which correspond one-to-one with the two slots.

[0011] Furthermore, the conductive spring includes: a spring body, a first end of an insert near the height of the spring body, and the insert being connected to the spring body at an angle; a connecting flange, a second end of the connecting flange near the height of the spring body, the connecting flange being connected to the spring body at an angle, and the connecting flange being connected to a circuit board.

[0012] Furthermore, the insert and connecting flange are located on the same side of the thickness direction of the spring body.

[0013] Furthermore, the main body of the spring clip, the insert, and the connecting flange are integrally molded.

[0014] Furthermore, the main body of the spring includes a transition section, which is located near the connecting flange and has an arc-shaped structure.

[0015] According to another aspect of the present invention, a charging device is provided, the charging device having an electrical connection structure for the charging device, the electrical connection structure for the charging device being the aforementioned electrical connection structure for the charging device.

[0016] According to another aspect of the present invention, a vehicle is provided, the vehicle having at least one of a charging device and an electrical connection structure for the charging device, wherein the charging device is the aforementioned charging device, and the electrical connection structure for the charging device is the aforementioned electrical connection structure for the charging device.

[0017] By applying the technical solution of this invention, the interaction between the first snap-fit ​​component of the signal terminal and the second snap-fit ​​component provided by the conductive spring contact achieves precise positioning and fixation of the signal terminal, increases the mechanical stability of the connection, and reduces the risk of connection failure caused by vibration. Simultaneously, the snap-fit ​​state between the second snap-fit ​​component and the first snap-fit ​​component ensures the continuous and reliable transmission of electrical signals and reduces the uncertainty of contact resistance. In this embodiment, the conductive spring contact simultaneously realizes both the electrical and mechanical connection structure between the signal terminal and the circuit board, eliminating the need for additional terminal fixing components, simplifying the assembly process, reducing material costs and manufacturing steps, significantly improving production efficiency, effectively controlling costs, and solving the problem of excessive components in the signal terminal connection structure, thus effectively reducing manufacturing costs. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 A schematic diagram of an embodiment of an electrical connection structure for a charging device according to the present invention is shown;

[0020] Figure 2 A schematic diagram of an embodiment of a conductive spring with an electrical connection structure according to the present invention is shown;

[0021] Figure 3 A schematic diagram of an embodiment of the signal terminal of the electrical connection structure according to the present invention is shown.

[0022] The above figures include the following reference numerals:

[0023] 1. Signal terminal; 10. First snap-fit ​​assembly; 101. Slot;

[0024] 2. Circuit board;

[0025] 3. Conductive spring; 30. Second snap-fit ​​assembly; 301. Insert; 31. Spring body; 311. Transition section; 32. Connecting flange. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0030] Combination Figures 1 to 3 As shown, according to a specific embodiment of this application, an electrical connection structure for a charging device is provided.

[0031] Specifically, the electrical connection structure for the charging device includes a circuit board 2, a signal terminal 1, and a conductive spring 3. The signal terminal 1 has a first snap-fit ​​component 10. The conductive spring 3 is connected to the circuit board 2 and has a second snap-fit ​​component 30. The second snap-fit ​​component 30 and the first snap-fit ​​component 10 are in a snap-fit ​​state and a separate state. When the second snap-fit ​​component 30 and the first snap-fit ​​component 10 are in the snap-fit ​​state, the signal terminal 1 forms an electrical signal transmission line with the circuit board 2 through the conductive spring 3.

[0032] By applying the technical solution of this embodiment, the interaction between the first snap-fit ​​component 10 of the signal terminal 1 and the second snap-fit ​​component 30 of the conductive spring 3 achieves precise positioning and fixation of the signal terminal 1, increases the mechanical stability of the connection, and reduces the risk of connection failure caused by vibration. Simultaneously, the snap-fit ​​state between the second snap-fit ​​component 30 and the first snap-fit ​​component 10 ensures the continuous and reliable transmission of electrical signals and reduces the uncertainty of contact resistance. In this embodiment, the conductive spring 3 simultaneously realizes both the electrical connection structure and the mechanical connection structure between the signal terminal 1 and the circuit board 2, eliminating the need for additional terminal fixing components, simplifying the assembly process, reducing material costs and manufacturing steps, significantly improving production efficiency, effectively controlling costs, solving the problem of excessive components in the signal terminal connection structure, and effectively reducing manufacturing costs.

[0033] Furthermore, the first snap-fit ​​component 10 has a snap-fit ​​space, and when the second snap-fit ​​component 30 is in a snap-fit ​​state with the first snap-fit ​​component 10, at least a portion of the second snap-fit ​​component 30 extends into the snap-fit ​​space and contacts the side wall of the snap-fit ​​space.

[0034] In this embodiment, the signal terminal connection structure is achieved through a precise fit between the first snap-fit ​​component 10 and the second snap-fit ​​component 30. When the second snap-fit ​​component 30 engages with the first snap-fit ​​component 10, a portion of the structure of the second snap-fit ​​component 30 extends into the snap-fit ​​space of the first snap-fit ​​component 10 and contacts the sidewall of the snap-fit ​​space. This design ensures a secure connection between the two components, and the sidewall contact increases the reliability of the connection, avoiding problems such as poor contact or loosening. Simultaneously, this snap-fit ​​method simplifies the assembly process, improves production efficiency, and maintains good mechanical and electrical performance during long-term use, effectively coping with vibrations and impacts during vehicle operation, and ensuring the stability and safety of signal transmission.

[0035] Furthermore, the first snap-fit ​​assembly 10 includes a slot 101, which is formed on the outer peripheral surface of the signal terminal 1 and extends circumferentially along the signal terminal 1. The second snap-fit ​​assembly 30 includes a insert 301. When the second snap-fit ​​assembly 30 and the first snap-fit ​​assembly 10 are in a snap-fit ​​state, the insert 301 extends into the slot 101 and contacts the slot wall of the slot 101.

[0036] In this embodiment, a slot 101 is provided on the outer peripheral surface of the signal terminal 1. The slot 101 extends circumferentially along the signal terminal 1, providing a stable and precise engagement point. The second engagement assembly 30 includes a tab 301. When the second engagement assembly 30 is engaged with the first engagement assembly 10, the tab 301 extends into the slot 101 and makes tight contact with the slot wall of the slot 101, forming a strong mechanical connection. This ensures reliable fixation between the signal terminal and the conductive spring, while increasing the contact area and thus optimizing the electrical connection performance. Furthermore, through this precise engagement mechanism, even in harsh environments with frequent vehicle vibrations, it can effectively prevent the signal terminal from loosening or shifting, maintaining connection stability and signal transmission continuity.

[0037] In other embodiments not shown, the shapes of the slot 101 and the insert 301 can also be adjusted, for example, by designing the slot to be a non-linear extension or changing the geometry of the insert to accommodate different connection requirements while maintaining the stability of the snap-fit ​​and electrical performance.

[0038] Furthermore, the first snap-fit ​​assembly 10 includes two slots 101, both of which extend circumferentially along the signal terminal 1 and are symmetrically arranged about the radial direction of the signal terminal 1. The second snap-fit ​​assembly 30 includes two inserts 301, which correspond one-to-one with the two slots 101.

[0039] In this embodiment, the two slots 101 of the first snap-fit ​​assembly 10 are symmetrically distributed circumferentially along the signal terminal 1, and the two inserts 301 in the second snap-fit ​​assembly 30 correspond one-to-one with the slots 101, ensuring the uniformity and stability of the connection. During assembly, the inserts 301 are inserted into the slots 101 to achieve snap-fit, which not only provides mechanical fixing but also reduces contact resistance and improves the reliability of signal transmission by increasing the contact area and optimizing the contact method.

[0040] Furthermore, the conductive spring 3 includes a spring body 31 and a connecting flange 32. The insert 301 is disposed at a first end near the height direction of the spring body 31, and the insert 301 is connected to the spring body 31 at an angle. The connecting flange 32 is disposed at a second end near the height direction of the spring body 31, and the connecting flange 32 is connected to the spring body 31 at an angle. The connecting flange 32 is connected to the circuit board 2.

[0041] In this embodiment, one end of the spring body 31 is provided with an insert 301, which forms a certain angle with the spring body 31. This allows for precise positioning and secure contact with the signal terminal 1, ensuring stable transmission of electrical signals. The connecting flange 32 at the other end of the spring body 31 is connected to the spring body 31 at a specific angle and connected to the circuit board 2, forming a reliable electrical connection. This structural design not only simplifies the number of original components but also enhances the mechanical stability and electrical reliability of the connection through the elastic action of the spring and its soldering to the circuit board 2.

[0042] In addition, the geometric design of the conductive spring 3 allows for blind mating of the signal terminal 1, reducing assembly difficulty and improving production efficiency.

[0043] Furthermore, the insert 301 and the connecting flange 32 are located on the same side of the thickness direction of the spring body 31.

[0044] In this embodiment, the insert 301 and the connecting flange 32 are located on the same side in the thickness direction of the spring body 31, which optimizes the connection structure between the signal terminal and the PCB board, simplifies the assembly process, reduces the alignment difficulty during assembly, and thus reduces production costs and improves production efficiency.

[0045] Furthermore, the spring body 31, insert 301, and connecting flange 32 are integrally formed.

[0046] In this embodiment, the one-piece molding design enhances the overall integrity and reliability of the structure, avoiding assembly errors and additional losses at connection points that may result from assembling multiple components. The integrated design of the insert 301 and the spring body 31 reduces contact resistance during electrical signal transmission, improving the stability and efficiency of the electrical connection. The one-piece molding of the connecting flange 32 and the spring body 31 strengthens the mechanical fixing effect and improves the vibration resistance and durability of the connection structure under complex working conditions. The one-piece molding process also simplifies the manufacturing process, reduces production costs, and ensures product consistency and high quality.

[0047] Furthermore, the main body 31 of the spring includes a transition section 311, which is located near the connecting flange 32 and has an arc-shaped structure.

[0048] In this embodiment, the transition section 311 of the spring body 31 is designed as an arc-shaped structure and is located close to the connecting flange 32. This optimizes the stress distribution of the spring. Through the gentle deformation of the arc-shaped transition section 311, the stress concentration when the connecting flange 32 contacts the signal terminal is effectively dispersed, thereby improving the fatigue resistance and service life of the spring.

[0049] According to another specific embodiment of this application, a charging device is also provided, which has an electrical connection structure for the charging device, and the electrical connection structure for the charging device is the above-described electrical connection structure for the charging device.

[0050] By adopting the aforementioned electrical connection structure for charging devices, the signal transmission stability of the charging devices is significantly enhanced, reducing connection failures caused by vibration and improving communication quality and user experience. Eliminating additional terminal fasteners not only simplifies the assembly process and reduces material costs but also reduces manufacturing steps, improves production efficiency, and achieves effective cost control.

[0051] This application also provides a preferred embodiment of a signal terminal connection structure for use in a charging dock.

[0052] To illustrate the technical effectiveness of this solution, the signal terminal connection structure of existing charging sockets is described below: Currently, the electrical connection structure of the signal terminal mainly consists of three precision components: the signal terminal itself serves as the carrier of information transmission, the terminal fixing component provides structural support and positioning, and the contact springs on the PCB (printed circuit board) achieve the final conduction of electrical signals. In actual assembly, the signal terminal is fixed to the terminal fixing component through a precisely designed snap-fit ​​structure, forming a stable mechanical connection; subsequently, the conductive part of the signal terminal forms elastic pressure contact with the pre-designed elastic contact piece on the PCB, thereby completing the reliable transmission of electrical signals.

[0053] However, after long-term market testing and technical analysis, three major defects have been gradually exposed in the existing signal terminal connection structure: First, in terms of connection performance, due to the reliance on elastic contact electrical connections, contact fretting wear is prone to occur under long-term vehicle vibration conditions, leading to increased contact resistance and affecting the stability of signal transmission; Second, the number of components is too large. A complete connection system requires the independent design of multiple parts such as signal terminals, fasteners, and springs, which not only increases material management costs but also increases the complexity of the assembly process; Third, the cost is high. The multi-component structure leads to an exponential increase in mold development costs, raw material consumption, and manufacturing process difficulty, especially in large-scale production, where this cost disadvantage is more significant. These defects have become key bottlenecks restricting the improvement of charging socket performance in the context of increasingly stringent reliability requirements for high-end new energy vehicles.

[0054] To solve the above-mentioned technical problems, in the signal terminal connection structure of this embodiment, the conductive spring 3 is snapped and fixed to the signal terminal 1, which increases the contact area and improves the connection reliability while fixing the terminal; the signal terminal connection structure of this embodiment optimizes the original elastic contact structure, thereby improving the reliability of the electrical connection; the signal terminal connection structure of this embodiment eliminates the terminal fixing parts originally used to fix the signal terminals, reducing the number of parts and lowering the cost.

[0055] Specifically, such as Figure 1 As shown, the signal terminal connection structure in this embodiment includes a signal terminal and a PCB board. The innovatively designed conductive spring achieves the dual functions of mechanical fixation and electrical signal transmission.

[0056] Among them, the signal terminal 1 serves as the carrier for electrical signal transmission. Its head is designed with a standardized interface to adapt to the functional requirements of the charging dock, and its tail is provided with a slot 101. Through precision machining, a snap-fit ​​structure is formed to ensure a stable connection with the conductive spring 3.

[0057] The PCB board is a circuit board used for conductive circuits. It uses a multi-layer high-conductivity copper foil substrate and is tin-plated on the surface to improve the reliability of soldering. The pre-set conductive pads on it correspond to the connecting flanges 32 of the conductive spring 3 to form an electrical connection path.

[0058] The conductive spring 3, as a key component of the mechanical-electrical coupling, is made of beryllium copper alloy through a stamping-heat treatment process, possessing both high elasticity and fatigue resistance. The structure of the conductive spring 3 is divided into three functional areas:

[0059] Connection flange 32: The connection flange 32 forms an intermetallic compound (IMC) layer with the PCB board pads through a reflow soldering process. The welding strength is ≥5N and the contact resistance is <5mΩ, ensuring electrical continuity under long-term vibration conditions.

[0060] Insert 301: Two inserts 301 are provided, which form an interference fit with the slot 101 of the signal terminal 1. The clamping force is controlled within the range of 2-3N, which not only ensures the ease of assembly, but also prevents loosening due to vibration. At the same time, the contact surface between the insert 301 and the slot 101 is silver-plated to reduce the contact resistance. The cross-sectional area of ​​the current conduction path is ≥0.5mm², which meets the requirement of 10A continuous current carrying capacity.

[0061] Spring body 31: Located on one side of insert 301, spring body 31 and insert 301 can be formed into an L-shaped structure by stamping. Spring body 31 fits with the outer contour of signal terminal 1. Insert 301 can limit the axial displacement of signal terminal 1 within ±0.1mm to ensure assembly position accuracy.

[0062] The conductive spring 3 is in the shape of a thin-walled shell with a thickness of 0.2mm ± 0.02mm, which ensures elastic deformation capability while avoiding insufficient strength due to excessive thinness;

[0063] The welding area connecting flange 32 adopts a boss design with a height of 0.15mm, which can compensate for the flatness error of the PCB board surface and ensure the consistency of welding quality.

[0064] The snap-fit ​​structure of insert 301 has been optimized by finite element analysis (FEA), with a stress concentration factor of <1.5 and a predicted fatigue life of 100,000 insertion and removal cycles.

[0065] The gap between the spring body 31 and the signal terminal 1 is controlled at 0.05-0.1mm, which takes into account both assembly guidance and error prevention functions.

[0066] Among them, the conductive spring 3 is made of C17200 beryllium copper alloy, which has high strength, high elasticity, high hardness, excellent thermal conductivity, electrical conductivity, corrosion resistance, wear resistance and good processing performance. The following is a detailed introduction of its relevant properties:

[0067] (1) Melting point: approximately 900℃~1080℃. The low melting point makes it easy to process and shape.

[0068] (2) Thermal conductivity: High, which is beneficial for heat dissipation and heat transfer. The specific value varies depending on the alloy composition and processing condition. The thermal conductivity can reach 315 W / m. K.

[0069] (3) Conductivity: C17200 type beryllium copper has good conductivity and is suitable for applications that require a certain level of conductivity. The conductivity can reach 45% IACS.

[0070] (4) Coefficient of thermal expansion: relatively low, approximately 17.4 × / ℃~17.7× / ℃, making it more stable in high-temperature environments.

[0071] (5) Tensile strength: After appropriate heat treatment and cold working, the tensile strength can reach 700MPa or 830MPa or more.

[0072] (6) Yield strength: It is also relatively high, generally between 350MPa and 1035MPa.

[0073] (7) Hardness: After heat treatment, the hardness ranges from 195 to 235 HB (Britt hardness).

[0074] (8) Elongation: Generally between 1% and 15%, the specific value varies depending on the alloy composition and processing state.

[0075] The signal terminal connection structure in this embodiment has the following advantages:

[0076] 1) Improved mechanical reliability: The combined fixing method of snap-fit ​​and welding enables the vibration resistance of the connection structure to meet the vibration acceleration requirement of 3m / s² in the ISO16750-3 standard;

[0077] 2) Electrical performance optimization: The dual-slot contact design controls the contact resistance fluctuation range within ±3%, meeting the signal integrity requirements of high-speed communication (such as CAN FD);

[0078] 3) Reduced manufacturing costs: Modular design reduces the assembly process between the spring and the PCB from 3 steps to 1 step, shortening the production cycle by 40%;

[0079] 4) Enhanced maintainability: The limiting structure supports blind mating of signal terminals, expanding the tolerance range to ±0.2mm, reducing the difficulty of on-site maintenance;

[0080] 5) The use of conductive spring 3 to clamp and fix signal terminal 1 increases the current conduction area and improves reliability.

[0081] According to another specific embodiment of this application, a vehicle is also provided, the vehicle having at least one of a charging device and an electrical connection structure for the charging device, wherein the charging device is the aforementioned charging device, and the electrical connection structure for the charging device is the aforementioned electrical connection structure for the charging device.

[0082] By integrating the aforementioned charging equipment or the aforementioned electrical connection structure for charging equipment, the vehicle's charging system can achieve more stable signal transmission, improve the reliability and safety of the charging process, and at the same time reduce manufacturing costs.

[0083] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0084] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0085] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0086] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electrical connection structure for a charging device, characterized in that, include: Circuit board (2); Signal terminal (1), wherein the signal terminal (1) is provided with a first snap-fit ​​component (10); A conductive spring (3) is connected to the circuit board (2). The conductive spring (3) is provided with a second snap-fit ​​component (30). The second snap-fit ​​component (30) and the first snap-fit ​​component (10) have a snap-fit ​​state connected to each other and a separation state separated from each other. When the second snap-fit ​​component (30) and the first snap-fit ​​component (10) are in the snap-fit ​​state, the signal terminal (1) forms an electrical signal transmission line with the circuit board (2) through the conductive spring (3).

2. The electrical connection structure for a charging device according to claim 1, characterized in that, The first snap-fit ​​component (10) has a snap-fit ​​space. When the second snap-fit ​​component (30) and the first snap-fit ​​component (10) are in the snap-fit ​​state, at least a portion of the second snap-fit ​​component (30) extends into the snap-fit ​​space and contacts the side wall of the snap-fit ​​space.

3. The electrical connection structure for a charging device according to claim 2, characterized in that, The first snap-fit ​​assembly (10) includes a slot (101) which is opened on the outer peripheral surface of the signal terminal (1) and extends along the circumferential direction of the signal terminal (1). The second snap-fit ​​assembly (30) includes a insert (301). When the second snap-fit ​​assembly (30) and the first snap-fit ​​assembly (10) are in the snap-fit ​​state, the insert (301) extends into the slot (101) and contacts the groove wall of the slot (101).

4. The electrical connection structure for a charging device according to claim 3, characterized in that, The first snap-fit ​​assembly (10) includes two slots (101), both slots (101) extend circumferentially along the signal terminal (1), and the two slots (101) are symmetrically arranged about the radial direction of the signal terminal (1). The second snap-fit ​​assembly (30) includes two inserts (301), and the two inserts (301) correspond one-to-one with the two slots (101).

5. The electrical connection structure for a charging device according to claim 3 or 4, characterized in that, The conductive spring (3) includes: The spring body (31) has an insert (301) disposed near the first end of the spring body (31) in the height direction, and the insert (301) is connected to the spring body (31) at an angle. A connecting flange (32) is provided at the second end of the spring body (31) in the height direction. The connecting flange (32) is connected to the spring body (31) at an angle. The connecting flange (32) is connected to the circuit board (2).

6. The electrical connection structure for a charging device according to claim 5, characterized in that, The insert (301) and the connecting flange (32) are located on the same side of the thickness direction of the spring body (31).

7. The electrical connection structure for a charging device according to claim 5, characterized in that, The spring body (31), the insert (301), and the connecting flange (32) are integrally formed.

8. The electrical connection structure for a charging device according to claim 5, characterized in that, The main body of the spring sheet (31) includes a transition section (311), which is located near the connecting flange (32) and has an arc-shaped structure.

9. A charging device, characterized in that, The charging device has an electrical connection structure for the charging device, and the electrical connection structure for the charging device is the electrical connection structure for the charging device as described in any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle has at least one of a charging device and an electrical connection structure for the charging device, wherein the charging device is the charging device according to claim 9, and the electrical connection structure for the charging device is the electrical connection structure for the charging device according to any one of claims 1-8.

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