Electric connection structure of electronic component contact and control equipment
By introducing parallel contacts and heat-conducting components between the main circuit contacts and the component contacts, the problem of excessive temperature at the connection point is solved, achieving better thermal management and stability.
Patent Information
- Application Number
- CN202422944671.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In the existing technology, the connection between the copper sheet in the main circuit and the contact of the components is prone to overheating under high current operation, which cannot meet the thermal management requirements.
The electrical connection structure of parallel contacts and main circuit contacts is adopted. By using heat-conducting components such as thermal pads or bent metal sheets, the heat dissipation area and heat conduction are increased to form a parallel electrical connection structure.
It effectively reduces the temperature of the connection points, improves heat dissipation, meets the thermal management requirements under high current, and enhances the stability of the electrical connection.
Smart Images
Figure CN223583266U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of electric connection structure, specifically relates to an electronic component contact electric connection structure and control equipment. BACKGROUND
[0002] The high-voltage control box / distribution box (BDU, PDU) is an important protection and control module of the high-voltage circuit system of the electric vehicle, and is an important component of the vehicle control system of the electric vehicle, and the function is realized to the on-off control, protection and energy distribution of the power battery electric energy of the electric vehicle, the function conversion of the high-voltage accessories such as the drive motor control system, the battery management system, the charging management system, DC / DC, the electric air conditioner, the electric power steering, the brake system, etc.Currently, the control box product is basically customized according to the demand of the vehicle factory, and the internal thermal management is the main design topic because the current conditions of each automobile platform are different.
[0003] The high-voltage control box is mainly composed of relays, fuses, pre-charging resistors, copper bars, connectors, current sensors, wire harnesses and external housings, and the main current electric connection mode in the industry is that the copper bar (main loop contact) is directly connected with the contact of the standard component through the bolt fastening, and the specific electric connection structure between the copper bar and the contact of the component is as shown in the accompanying Figure 7 and the accompanying Figure 8 Since the main electronic components are generally standard products, based on the volume and cost consideration, when the electronic component manufacturers develop series of standard products, the size of the contact is mainly designed as the main design basis to meet the bolt fastening requirement, and the consideration of the heat source heat conduction and heat dissipation requirement is lacked, the cross-sectional dimension of the contact cannot meet the large current condition, so that the connection part of the main loop copper sheet and the component contact under the large current working state is prone to high temperature problem, and the heat management requirement under the large current cannot be met. UTILITY MODEL CONTENTS
[0004] In view of the defects of the prior art, the utility model provides an electric connection structure of electronic component contact, which mainly solves the technical problem that the connection part between the main loop copper sheet and the component contact of the prior art is prone to high temperature under the large current working state, and cannot meet the heat management requirement of the product under the large current.
[0005] To achieve the above purpose, the utility model is realized by the following technical scheme:
[0006] An electric connection structure of an electronic component contact includes a fastener, a main circuit contact patch, and a parallel contact patch having at least a heat conduction property, the contact of the electronic component has a first contact surface and a second contact surface opposite to each other, at least the main circuit contact patch is tightly fitted with the first contact surface of the contact through the fastener, and the parallel contact patch is configured to be tightly placed at the second contact surface of the contact, and a conduction part is arranged between the parallel contact patch and the main circuit contact patch at least for conducting heat between the parallel contact patch and the main circuit contact patch.
[0007] Further, the contact fitting surface of the parallel contact patch corresponding to the contact is a planar structure, the parallel contact patch has extension parts extending to two sides relative to the contact, and a conduction part is arranged in each of the two interval spaces formed between the two extension parts and the main circuit contact patch.
[0008] Further, the conduction part is a heat conduction adhesive pad having a heat conduction property.
[0009] Further, the parallel contact patch and the conduction part are metal structures having a heat conduction property and an electrical conduction property.
[0010] Further, the conduction part is a bent metal sheet having an elastic deformation property, and the bent metal sheet is configured to be elastically abutted between the parallel contact patch and the main circuit contact patch, so that a parallel electric connection structure is formed between the parallel contact patch and the main circuit contact patch and heat can be conducted between the parallel contact patch and the main circuit contact patch.
[0011] Further, the cross section of the bent metal sheet is in the shape of a Chinese character 'j'.
[0012] Further, an embedding groove corresponding to the contact is formed on the parallel contact patch, the embedding groove has a depth matched with the thickness of the contact, and a convex part integrally formed on both sides of the embedding groove forms a conduction part for conducting heat between the parallel contact patch and the main circuit contact patch, when the contact is embedded into the embedding groove of the parallel contact patch, the convex part on both sides of the embedding groove is tightly abutted with the main circuit contact patch, so that heat can be conducted between the parallel contact patch and the main circuit contact patch.
[0013] Further, the parallel contact patch is a metal sheet structure having a heat conduction property and an electrical conduction property, so that a parallel electric connection structure is formed between the parallel contact patch and the main circuit contact patch and heat can be conducted between the parallel contact patch and the main circuit contact patch.
[0014] Further, the fastener is a screw, a screw hole is formed on the contact of the electronic component for the screw to pass through, and the main circuit contact patch, the contact, and the parallel contact patch are locked and fixed through the screw.
[0015] Based on the same inventive concept, the utility model also provides a control device, the control device is high voltage control box or high voltage distribution box for high voltage circuit system of electric automobile, including electronic component contact's electric connection structure of any one of above.
[0016] The technical scheme has the following advantages or beneficial effects:
[0017] In the electric connection structure and control equipment of the electronic component contact, the main circuit contact piece and the first contact surface of the contact of the electronic component are in contact, and the parallel contact piece and the second contact surface of the contact are in contact, so that the main circuit contact piece and the parallel contact piece correspond to each other, and the conductive part is arranged between the main circuit contact piece and the parallel contact piece, so that the main circuit contact piece and the parallel contact piece can conduct heat to each other, and thus the added parallel contact piece effectively increases the heat dissipation area of the connection part between the main circuit contact piece and the contact, that is, the parallel contact piece is added at the electric connection position to increase the local heat conduction cross-sectional area and the heat dissipation area, and the mass at the heat source is increased, the mc is improved, and the temperature at the heat source can be effectively reduced, so that the heat management requirement of the product under a large current can be better met. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a three-dimensional structure exploded schematic view of the electric connection structure of the utility model embodiment one.
[0019] Figure 2 is a matching structure cross-sectional view of the electric connection structure of the utility model embodiment one.
[0020] Figure 3 is a three-dimensional structure exploded schematic view of the electric connection structure of the utility model embodiment two.
[0021] Figure 4 is a matching structure cross-sectional view of the electric connection structure of the utility model embodiment two.
[0022] Figure 5 is a three-dimensional structure exploded schematic view of the electric connection structure of the utility model embodiment three.
[0023] Figure 6 is a matching structure cross-sectional view of the electric connection structure of the utility model embodiment three.
[0024] Figure 7 is a three-dimensional structure exploded schematic view of the electric connection structure of the electronic component contact of the prior art.
[0025] Figure 8 is a matching structure cross-sectional view of the electric connection structure of the electronic component contact of the prior art.
[0026] Label explanation:
[0027] 1, fastener, 2, main circuit contact piece, 3, parallel contact piece, 4, heat-conducting rubber pad, 5, bent metal sheet, 6, electronic component, 31, extension part, 32, embedding groove, 33, convex part, 61, contact. DETAILED DESCRIPTION
[0028] The utility model will be further described below in connection with the drawings and examples.
[0029] In the description of the utility model, it needs to be understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0030] Example one
[0031] Please refer to the drawings Figure 1 An embodiment of the utility model provides an electronic component contact electric connection structure, including fastener 1, main circuit contact piece 2 and parallel contact piece 3 with heat conduction performance, the contact 61 of electronic component 6 has first contact surface and second contact surface with positive and negative opposite, at least main circuit contact piece 2 is tightly matched with the first contact surface of contact 61 by fastener 1, and parallel contact piece 3 is configured to be tightly placed at the second contact surface of contact 61, and the conduction part for conducting heat between parallel contact piece 3 and main circuit contact piece 2 is arranged between parallel contact piece 3 and main circuit contact piece 2.It can be understood that in the embodiment, main circuit contact piece 2 and the first contact surface of the contact 61 of electronic component 6 are in abutting engagement, at the same time, parallel contact piece 3 and the second contact surface of contact 61 are in abutting engagement, so that main circuit contact piece 2 and parallel contact piece 3 correspond to each other, and the conduction part is arranged between main circuit contact piece 2 and parallel contact piece 3, so that main circuit contact piece 2 and parallel contact piece 3 can conduct heat to each other through the conduction part, in this way, the heat dissipation area at the connecting part between main circuit contact piece 2 and contact 61 is effectively improved by the added parallel contact piece 3, that is, parallel contact piece 3 is added at the electric connection position to increase the local heat conduction cross-sectional area and heat dissipation area, and at the same time, the mass at the heat source (electric connection position) is increased, the mc (specific heat capacity formula: Q=mcΔt) is improved, and then the temperature at the heat source can be effectively reduced, so as to better meet the thermal management requirements of the product under large current.In addition, one of the focuses of the present application is also to solve the problem of mismatching of the overcurrent capacity of main circuit contact piece (large terminal) and electronic component contact (small terminal), because the overcurrent area of the electronic component part is small, when the current increases, the temperature of the local position of the electronic component contact is prone to be too high, and parallel contact piece can increase the overcurrent capacity of double-layer parallel connection, and at the same time, the size of parallel contact piece can be set according to actual conditions as needed, which is convenient for production and can be easily combined into the fixing structure of the existing main circuit contact piece and electronic component contact.
[0032] Please refer to the drawings Figure 1 , the drawingsFigure 2 In one preferred embodiment, the contact surface of the parallel contact piece 3 corresponding to the contact head 61 is a flat surface, and the parallel contact piece 3 has two extension parts 31 extending to both sides of the contact head 61, and each of the two extension parts 31 and the main circuit contact piece 2 forms a space, and a conducting part is arranged in each of the two spaces. In one preferred embodiment, the conducting part is a heat-conducting adhesive pad 4 having heat-conducting performance. In this way, the contact head 61 is clamped between the main circuit contact piece 2 and the parallel contact piece 3, and the two heat-conducting adhesive pads 4 are distributed on both sides of the contact head 61 and are arranged between the main circuit contact piece 2 and the parallel contact piece 3. The heat-conducting adhesive pad 4 not only conducts heat but also absorbs assembly tolerance, thereby effectively improving the stability of the electrical connection.
[0033] Please refer to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 In one preferred embodiment, the fastener 1 is a screw, and the contact head 61 of the electronic component 6 is provided with a screw hole through which the screw passes, and the main circuit contact piece 2, the contact head 61 and the parallel contact piece 3 are locked and fixed by the screw. However, those skilled in the art should understand that in other embodiments, the parallel contact piece 3 can be integrally connected and fixed to the device bottom shell (not shown) and tightly abut against the contact surface of the bottom of the contact head 61 of the electronic component 6 after the electronic component 6 is installed in place, and the main circuit contact piece 2 and the contact head 61 are locked and fixed by the fastener 1, so that the main circuit contact piece 2 and the contact head 61 are tightly abutted together.
[0034] In addition, one embodiment of the utility model also provides a control device, which is a high-voltage control box or a high-voltage distribution box for a high-voltage circuit system of an electric vehicle, and comprises the electrical connection structure of the electronic component contact of any one of the above embodiments.
[0035] Embodiment two
[0036] Please refer to the accompanying drawings Figure 3 , the accompanying drawings Figure 4 The difference between the embodiment and the embodiment one is that the parallel contact piece 3 and the conducting part are metal structures having heat-conducting performance and electrically conducting performance, and the material of the metal structure can be copper or aluminum or other metal materials having heat-conducting performance and electrically conducting performance.
[0037] Please refer to the accompanying drawings Figure 3 , the accompanying drawings Figure 4In one preferred embodiment, the conducting part is a bent metal sheet 5 with elastic deformation performance, which is configured to elastically abut between the parallel contact piece 3 and the main circuit contact piece 2, so that a parallel electric connection structure is formed between the parallel contact piece 3 and the main circuit contact piece 2 and heat can be conducted between them. The so-called parallel electric connection structure refers to that the main circuit contact piece 2 forms an electric connection with the contact head 61, while the parallel contact piece 3 also forms an electric connection with the contact head 61. At the same time, the main circuit contact piece 2 and the parallel contact piece 3 are connected through two bent metal sheets 5, thereby forming a parallel structure between the main circuit contact piece 2 and the parallel contact piece 3. In this way, the current-carrying area of the component contact head is increased, thereby increasing the overcurrent capacity of the circuit, and at the same time, the heat dissipation area of the electric connection is also increased, improving the heat dissipation effect, so as to better meet the thermal management requirements of the product under large current. In addition, the bent metal sheet 5 can also absorb the assembly tolerance, which can effectively improve the stability of the electric connection.
[0038] Please refer to the accompanying drawings Figure 3 , the accompanying drawings Figure 4 In one preferred embodiment, the cross section of the bent metal sheet 5 is in the shape of a "J" character. However, those skilled in the art should understand that in other embodiments, the cross section of the bent metal sheet 5 can also be in the shape of "W" or wave, and is not limited to the specific embodiments disclosed in the present embodiment.
[0039] Embodiment three
[0040] Please refer to the accompanying drawings Figure 5 , the accompanying drawings Figure 6 The difference between the present embodiment and embodiment one is that a embedding groove 32 corresponding to the contact head 61 is formed on the parallel contact piece 3, the embedding groove 32 has a depth adapted to the thickness of the contact head 61, and the convex parts 33 integrally formed on both sides of the embedding groove 32 form the conducting part for conducting heat between the parallel contact piece 3 and the main circuit contact piece 2. When the contact head 61 is embedded into the embedding groove 32 of the parallel contact piece 3, the convex parts 33 on both sides of the embedding groove 32 tightly abut with the main circuit contact piece 2, so that heat can be conducted between the parallel contact piece 3 and the main circuit contact piece 2.
[0041] Please refer to the accompanying drawings Figure 5 , the accompanying drawings Figure 6 In one preferred embodiment, the parallel contact piece 3 is preferably a metal sheet structure with heat conduction performance and electrical conductivity, so that a parallel electric connection structure is formed between the parallel contact piece 3 and the main circuit contact piece 2 and heat can be conducted between them.
[0042] The above describes the embodiments only to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, therefore, all other embodiments obtained by the ordinary skilled in the art without creative labor, belong to the protection scope of the present application.
Claims
1. An electrical connection structure for electronic components, characterized by: The electronic component (6) includes a fastener (1), a main circuit contact (2), and a parallel contact (3) having at least heat conduction performance, a contact (61) of the electronic component (6) has a first contact surface and a second contact surface in positive and reverse opposition, at least the main circuit contact (2) is tightly fitted with the first contact surface of the contact (61) through the fastener (1), and the parallel contact (3) is configured to be tightly placed at the second contact surface of the contact (61), and a conduction part is arranged between the parallel contact (3) and the main circuit contact (2) at least for conducting heat between the parallel contact (3) and the main circuit contact (2).
2. An electrical connection structure for electronic component contacts as set forth in claim 1, characterized in that: The contact fitting surface of the parallel contact (3) corresponding to the contact (61) is a planar structure, the parallel contact (3) has an extension part (31) extending to both sides relative to the contact (61), and two extension parts (31) form a spacing space with the main circuit contact (2) respectively, and a conduction part is arranged in each spacing space.
3. An electrical connection structure for electronic component contacts as set forth in claim 2, characterized in that: The conduction part is a heat-conducting adhesive pad (4) having heat conduction performance.
4. An electrical connection structure for electronic component contacts as defined in claim 2, characterized in that: The parallel contact (3) and the conduction part are metal structures having heat conduction performance and electrical conductivity.
5. An electrical connection structure for electronic component contacts as defined in claim 4, characterized in that: The conduction part is a bent metal sheet (5) having elastic deformation performance, and the bent metal sheet (5) is configured to elastically abut between the parallel contact (3) and the main circuit contact (2), so that a parallel electrical connection structure is formed between the parallel contact (3) and the main circuit contact (2) and heat can be conducted between them.
6. An electrical connection structure for electronic component contacts as defined in claim 5, characterized in that: The cross section of the bent metal sheet (5) is in the shape of a "U".
7. An electrical connection structure for electronic components according to claim 1, characterized in that: A fitting groove (32) corresponding to the contact (61) is formed on the parallel contact (3), the fitting groove (32) has a depth matching the thickness of the contact (61), and a convex part (33) integrally formed on both sides of the fitting groove (32) forms a conduction part for conducting heat between the parallel contact (3) and the main circuit contact (2), when the contact (61) is fitted into the fitting groove (32) of the parallel contact (3), the convex part (33) on both sides of the fitting groove (32) is tightly fitted with the main circuit contact (2), so that heat can be conducted between the parallel contact (3) and the main circuit contact (2).
8. An electrical connection structure for electronic component contacts as defined in claim 7, characterized in that: The parallel contact (3) is a metal sheet structure having heat conduction performance and electrical conductivity, so that a parallel electrical connection structure is formed between the parallel contact (3) and the main circuit contact (2) and heat can be conducted between them.
9. An electrical connection structure for electronic component contacts according to any one of claims 1 to 8, characterized in that: The fastener (1) is a screw, a nail hole is formed on the contact (61) of the electronic component (6) for the screw to pass through, and the main circuit contact (2), the contact (61), and the parallel contact (3) are locked and fixed through the screw.
10. A control device characterized by comprising: The control device is a high-voltage control box or a high-voltage distribution box for high-voltage circuit systems of electric vehicles, and includes the electrical connection structure of the contact of the electronic component according to any one of claims 1 to 9.