Electric connection structure of electronic component contact and control equipment
By dividing the main circuit contact into a left half and a right half, and setting a conductive part between the parallel contact and the main circuit contact, the problems of high contact resistance and high temperature caused by insufficient contact area are solved, thus improving stability and heat dissipation.
Patent Information
- Application Number
- CN202422950071.X
- 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 contact area between the integral copper busbar and the contacts of standard components is insufficient due to insufficient processing precision, resulting in problems such as high contact resistance and high temperature rise.
By dividing the main circuit contact into a left half and a right half, and setting a conductive part between the parallel contact and the main circuit contact, and fixing it with locking pins, the contact area is increased, and heat is conducted between the parallel contact and the main circuit contact. Thermal pads or bent metal sheets are used for heat conduction.
It effectively reduces contact resistance, lowers temperature rise, improves the stability of electrical connections and heat dissipation, and meets the thermal management requirements under high current.
Smart Images
Figure CN223583267U_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 is mainly composed of a relay, a fuse, a pre-charge resistor, a copper bar, a connector, a current sensor, a wire harness and other components and an external shell, and the main current electric connection mode in the industry at present is that the copper bar (main loop contact) is directly connected with the contact of the standard component through a bolt fastening, and the specific electric connection structure between the copper bar and the contact of the component is shown in the accompanying drawings. Figure 5 and the accompanying Figure 6 However, the abutting assembly surface between the whole copper bar and the standard component may have a flatness error due to insufficient machining precision, so that the contact area of the abutting assembly surface of the copper bar and / or the abutting assembly surface of the contact is insufficient (the insufficient contact area may be caused by the insufficient flatness of the abutting assembly surface of the copper bar and / or the abutting assembly surface of the contact), and thus the copper bar and the contact are prone to have a large contact resistance and a high temperature rise during use. SUMMARY
[0003] In view of the deficiencies of the prior art, the utility model provides an electric connection structure of an electronic component contact, which mainly solves the technical problem that the abutting assembly surface of the copper bar and / or the abutting assembly surface of the contact is insufficient.
[0004] To achieve the above-mentioned purpose, the utility model is realized by the following technical scheme:
[0005] An electric connection structure of an electronic component contact, comprising a locking pin and a main loop contact, a contact pin hole is formed in the main loop contact, a contact pin hole is formed in the contact of the electronic component, the main loop contact is locked and fixed by the locking pin locked into the contact pin hole and the contact pin hole, and the main loop contact and the contact are tightly abutted with each other, a split groove is formed in the main loop contact, the split groove divides the contact pin hole into left and right half hole structures along the radial direction, and the main loop contact is divided into a base and left and right half contacts connected with the base in parallel through the split groove.
[0006] Further, it further comprises a parallel contact 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, the main loop contact is arranged at the first contact surface of the contact, the parallel contact is arranged at the second contact surface of the contact, and a conduction part for conducting heat between the parallel contact and the main loop contact is arranged between the parallel contact and the main loop contact.
[0007] Further, the parallel contact piece has extension parts extending to both sides relative to the contact head, and left and right half interval spaces are formed between the extension parts and the left and right half contact pieces of the main circuit contact piece, and the conducting parts are arranged in the left and right half interval spaces to enable heat conduction between the parallel contact piece and the main circuit contact piece.
[0008] Further, the conducting part is a heat-conducting rubber pad with heat conduction performance, and the two heat-conducting rubber pads correspond to the left and right half contact pieces of the main circuit contact piece respectively.
[0009] Further, the parallel contact piece and the conducting part are metal structures with heat conduction performance and electrical conductivity.
[0010] Further, the conducting part is a bent metal sheet with elastic deformation performance, and the two bent metal sheets correspond to the left and right half contact pieces of the main circuit contact piece respectively, and the bent metal sheet is arranged to elastically abut between the parallel contact piece and the main circuit contact piece to form a parallel electrical connection structure between the parallel contact piece and the main circuit contact piece and enable heat conduction between the parallel contact piece and the main circuit contact piece.
[0011] Further, the cross section of the bent metal sheet is in the shape of a Chinese character 'j'.
[0012] Further, the main circuit contact piece, the contact head and the parallel contact piece are locked and fixed by the locking nails.
[0013] Based on the same inventive concept, the utility model also provides a control equipment, the control equipment is high voltage control box or high voltage distribution box for high voltage circuit system of electric automobile, including electronic component contact piece's electric connection structure of any one of above.
[0014] The above technical scheme has the following advantages or beneficial effects:
[0015] In the electric connection structure of the electronic component contact piece and the control equipment, the originally integral main circuit contact piece is divided into the left and right half contact pieces which are connected by the base and are arranged side by side, so that the internal resistance of the main circuit contact piece can be effectively reduced, and when the main circuit contact piece and the contact head are locked by the locking nails, the left and right half contact pieces can relatively deform to a certain extent, so that the left and right half contact pieces can independently absorb the flatness error at the electrical connection position, and the problem that the main circuit contact piece and the contact head are not tightly contacted and the contact area is insufficient can be avoided, thereby improving the problem that the contact resistance at the electrical connection position of the main circuit contact piece and the contact head is large and the temperature rises. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is the three-dimensional structure exploded schematic view of the electric connection structure of the utility model embodiment one.
[0017] Figure 2is the matching structure cross-sectional view of the electric connection structure of the embodiment one of the utility model.
[0018] Figure 3 is the three-dimensional structure exploded schematic view of the electric connection structure of the embodiment two of the utility model.
[0019] Figure 4 is the matching structure cross-sectional view of the electric connection structure of the embodiment two of the utility model.
[0020] Figure 5 is the three-dimensional structure exploded schematic view of the electric connection structure of prior art.
[0021] Figure 6 is the matching structure cross-sectional view of the electric connection structure of prior art.
[0022] Label explanation:
[0023] 1, locking nail, 2, main circuit contact, 3, parallel contact, 4, heat-conducting rubber pad, 5, bent metal sheet, 6, electronic component, 21, contact nail hole, 22, split groove, 23, base, 24, left half contact, 25, right half contact, 31, extension, 61, contact. Specific embodiments
[0024] The utility model will be further described below in combination with the drawings and embodiments.
[0025] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do 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.
[0026] Embodiment one
[0027] Please refer to the drawings Figure 1 , the drawings Figure 2The utility model provides an electronic component contact electric connection structure, including locking peg 1 and main circuit contact piece 2, be equipped with contact piece peg hole 21 on main circuit contact piece 2, the contact peg hole of electronic component 6 61 is equipped with, main circuit contact piece 2 is locked and fixed through the locking peg 1 of locking contact piece peg hole 21 and contact peg hole and makes main circuit contact piece 2 and contact 61 each other closely and touches, main circuit contact piece 2 is equipped with a split groove 22, split groove 22 along the radial contact piece peg hole 21 is split and forms left, right half hole structure, and through split groove 22, main circuit contact piece 2 is split and forms the left half contact piece 24 and right half contact piece 25 that left, right side by side with the base 23 is connected. It can be understood that, in the embodiment, the originally whole main circuit contact piece 2 is split into left half contact piece 24 and right half contact piece 25 that are connected together by base 23 and present left and right side by side through split groove 22, such design can effectively reduce the internal resistance of main circuit contact piece 2, and when main circuit contact piece 2 is locked with contact 61 by locking peg 1, left half contact piece 24 and right half contact piece 25 can produce relative activity deformation to a certain extent, so that left half contact piece 24 and right half contact piece 25 can absorb the flatness error at the electric connection position separately, avoid the contact of main circuit contact piece 2 and contact 61 not closely, and the contact area is insufficient, thereby improving the problem of large contact resistance and high temperature rise at the electric connection position of main circuit contact piece 2 and contact 61.
[0028] Please refer to the attached drawings Figure 1 , attached drawings Figure 2 In one preferred embodiment, it further includes at least parallel contact piece 3 with heat conduction performance, the contact 61 of electronic component 6 has first contact surface and second contact surface that are opposite, main circuit contact piece 2 is attached to the first contact surface of contact 61, and parallel contact piece 3 is configured to be closely attached to the second contact surface of contact 61, and a conduction part is provided between main circuit contact piece 2 and parallel contact piece 3 for conducting heat between them. Main circuit contact piece 2 is in contact with the first contact surface of the contact 61 of electronic component 6, and at the same time, parallel contact piece 3 is in contact with the second contact surface of contact 61, so that main circuit contact piece 2 and parallel contact piece 3 correspond to each other in an up-down manner, and a conduction part is provided between main circuit contact piece 2 and parallel contact piece 3, which allows heat to be conducted between them. In this way, the additional parallel contact piece 3 effectively increases the heat dissipation area at the connection site between main circuit contact piece 2 and contact 61, i.e. the additional parallel contact piece 3 at the electric connection position is used to increase the local heat conduction cross-sectional area and heat dissipation area, while increasing the mass at the heat source (electric connection position), improving mc, and thus effectively reducing the temperature at the heat source, so as to better meet the thermal management requirements of the product under large current.
[0029] Please refer to the attached drawings Figure 1 , attached drawings Figure 2In one preferred embodiment, the parallel contact 3 has two extension parts 31 extending to both sides of the opposite contact 61, and the two extension parts 31 form a left half space and a right half space between the left half contact 24 and the right half contact 25 of the main circuit contact 2, respectively, and a conducting part is arranged in the left half space and the right half space to enable the parallel contact 3 and the main circuit contact 2 to conduct heat to each other. In one preferred embodiment, the conducting part is preferably a heat-conducting adhesive pad 4 having heat-conducting performance, and the two heat-conducting adhesive pads 4 correspond to the left half contact 24 and the right half contact 25 of the main circuit contact 2, respectively.
[0030] Please refer to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 In one preferred embodiment, the main circuit contact 2, the contact 61 and the parallel contact 3 are fixed by the locking pin 1. However, those skilled in the art should understand that in other embodiments, the parallel contact 3 can be integrally connected to the bottom shell (not shown) of the device and tightly contact the bottom surface of the contact 61 of the electronic component 6 after the electronic component 6 is installed in place, and the main circuit contact 2 and the contact 61 are fixed by the locking pin 1 to tightly contact each other.
[0031] 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 high-voltage circuit system of an electric vehicle, and comprises the electronic component contact electric connection structure of any one of the above embodiments.
[0032] Embodiment two
[0033] 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 3 and the conducting part are metal structures having heat-conducting performance and electric-conducting performance. The material of the metal structure can be copper or aluminum or other metal materials having heat-conducting performance and electric-conducting performance.
[0034] Please refer to the accompanying drawings Figure 3 , the accompanying drawings Figure 4In one preferred embodiment, the conducting part is a bending metal sheet 5 with elastic deformation performance, and the two bending metal sheets 5 correspond to the left half contact 24 and the right half contact 25 of the main circuit contact 2 respectively, and the bending metal sheet 5 is configured to elastically abut between the parallel contact 3 and the main circuit contact 2, so that the parallel contact 3 and the main circuit contact 2 form a parallel electric connection structure and can conduct heat to each other. The so-called parallel electric connection structure refers to that the main circuit contact 2 forms an electric connection with the contact 61, and the parallel contact 3 also forms an electric connection with the contact 61, and at the same time, the main circuit contact 2 and the parallel contact 3 are connected through the two bending metal sheets 5, thereby forming a parallel structure between the main circuit contact 2 and the parallel contact 3. In this way, the current-carrying area of the component contact 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, thereby improving the heat dissipation effect, so as to better meet the thermal management requirements of the product under large current. In addition, the bending metal sheet 5 can also absorb the assembly tolerance, which can effectively improve the stability of the electric connection.
[0035] Please refer to the accompanying drawings Figure 3 , the accompanying drawings Figure 4 In one preferred embodiment, the cross section of the bending metal sheet 5 is in the shape of "J". However, those skilled in the art should understand that in other embodiments, the cross section of the bending 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.
[0036] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; 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 those skilled in the art without creative labor fall within the protection scope of the present application.
Claims
1. An electrical connection structure of an electronic component contact, comprising a locking pin (1) and a main circuit contact (2), the main circuit contact (2) being provided with a contact pin hole (21), the contact (61) of an electronic component (6) being provided with a contact pin hole, the main circuit contact (2) being locked and fixed by the locking pin (1) locked into the contact pin hole (21) and the contact pin hole, and the main circuit contact (2) and the contact (61) being tightly contacted with each other, characterized in that: The main circuit contact piece (2) is provided with a split groove (22) which splits the contact piece pin hole (21) into left and right half hole structures along the radial direction, and splits the main circuit contact piece (2) into a base (23) and left and right half contact pieces (24) and (25) which are connected to the base (23) in parallel. 2. An electrical connection structure for electronic component contacts as set forth in claim 1, characterized in that: The parallel contact piece (3) has a first contact surface and a second contact surface which are opposite to each other, the main circuit contact piece (2) is arranged at the first contact surface of the contact head (61), and the parallel contact piece (3) is arranged at the second contact surface of the contact head (61), and a conducting part is arranged between the parallel contact piece (3) and the main circuit contact piece (2) for conducting heat between the parallel contact piece (3) and the main circuit contact piece (2).
3. An electrical connection structure for electronic component contacts as set forth in claim 2, characterized in that: The parallel contact piece (3) has an extension part (31) which extends to both sides of the contact head (61), and the left and right half contact pieces (24) and (25) of the main circuit contact piece (2) are respectively provided with left and right half spacing spaces, and the conducting part is arranged in the left and right half spacing spaces to enable the parallel contact piece (3) and the main circuit contact piece (2) to conduct heat.
4. An electrical connection structure for electronic component contacts as set forth in claim 3, characterized in that: The conducting part is a heat-conducting adhesive pad (4) which has heat-conducting properties, and the two heat-conducting adhesive pads (4) correspond to the left and right half contact pieces (24) and (25) of the main circuit contact piece (2) respectively.
5. An electrical connection structure for electronic component contacts as defined in claim 3, characterized in that: The parallel contact piece (3) and the conducting part are metal structures which have heat-conducting and electric-conducting properties.
6. An electrical connection structure for electronic component contacts as defined in claim 5, characterized in that: The conducting part is a bent metal sheet (5) which has elastic deformation properties, and the two bent metal sheets (5) correspond to the left and right half contact pieces (24) and (25) of the main circuit contact piece (2) respectively, and the bent metal sheet (5) is arranged to elastically abut between the parallel contact piece (3) and the main circuit contact piece (2) to form a parallel electric connection structure between the parallel contact piece (3) and the main circuit contact piece (2) and enable them to conduct heat.
7. An electrical connection structure for electronic component contacts as defined in claim 6, characterized in that: The cross section of the bent metal sheet (5) is in the shape of a Chinese character "j".
8. An electrical connection structure for electronic components according to any one of claims 2 to 7, characterized in that: The main circuit contact piece (2), the contact head (61) and the parallel contact piece (3) are locked and fixed by the locking pin (1).
9. 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 electric connection structure of the contact head of the electronic component according to any one of claims 1 to 8.