CN223583266U

CN223583266U - An electrical connection structure and control device for electronic component contacts

Info

Publication number: CN223583266U
Application number: CN202422944671.5U
Authority: CN
Inventors: 代文广; 周吉自; 周亮
Original assignee: Zhejiang Hongzhou New Energy Technology Co ltd
Current assignee: Zhejiang Hongzhou New Energy Technology Co ltd
Priority date: 2024-11-29
Filing date: 2024-11-29
Publication date: 2025-11-21
Anticipated expiration: 2034-11-29

Abstract

The utility model discloses an electric connection structure and control equipment of an electronic component contact, which comprises a fastener, a main circuit contact and a parallel contact at least having heat conducting property, wherein the contact of the electronic component is provided with a first contact surface and a second contact surface which are opposite in front and back, at least the main circuit contact is tightly matched with the first contact surface of the contact through the fastener, the parallel contact is configured to be tightly attached to the second contact surface of the contact, and a conducting part at least used for conducting heat between the parallel contact and the main circuit contact is arranged between the parallel contact and the main circuit contact. According to the utility model, the heat dissipation area of the connection part between the main loop contact and the contact is effectively increased by additionally arranging the parallel contact, namely, the parallel contact is additionally arranged at the electric connection position to increase the local heat conduction cross section and the heat dissipation area, and meanwhile, the quality of the heat source is increased, and the mc is increased, so that the temperature of the heat source can be effectively reduced, and the thermal management requirement of a product under high current can be better met.

Description

Electric connection structure and control equipment of electronic component contact

Technical Field

The utility model relates to the technical field of electric connection structures, in particular to an electric connection structure of an electronic component contact and control equipment.

Background

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 automobile, and is an important component of the whole automobile control system of the electric automobile, and the function of the high-voltage accessory such as the on-off control, protection and energy distribution of the power battery of the electric automobile, the coordination driving motor control system, the battery management system, the charging management system, the DC/DC, the electric air conditioner, the electric power steering, the braking system and the like is realized. At present, control box products are basically customized according to the requirements of factories, and internal thermal management is a main design subject because the current working conditions of all automobile platforms are different.

The high-voltage control box mainly comprises components such as a relay, a fuse, a pre-charging resistor, a copper bar, a connector, a current sensor, a wire harness and the like and an external shell, wherein the main high-current electric connection mode in the industry at present is that the copper bar (main loop contact) is directly connected with contacts of standard components through bolt fastening, and a specific electric connection structure between the copper bar and the contacts of the components is shown in the accompanying figures 7 and 8. Because the main electronic components are generally standard substances, when electronic component manufacturers develop series standard substances based on volume and cost, the sizes of the contacts are all based on the requirement of satisfying the bolt fastening, and the cross section of the contacts cannot satisfy the high-current working condition due to the lack of the requirement of heat conduction and heat dissipation at a heat source, so that the problem that the temperature is easily too high at the connecting part of a main circuit copper sheet and a component contact in the high-current working state, and the thermal management requirement under the high current cannot be satisfied.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides an electric connection structure of an electronic component contact, which mainly solves the technical problems that the connection part between a main loop copper sheet and the component contact in the prior art is easy to generate overhigh temperature in a high-current working state and cannot meet the thermal management requirement of a product under high current.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

An electric connection structure of electronic component contact includes fastener, main circuit contact and parallel contact with heat conducting property, the contact of electronic component has first contact surface and second contact surface opposite to each other, at least main circuit contact is closely matched with first contact surface of contact through fastener, parallel contact is configured to be closely attached to second contact surface of contact, and conduction part for conducting heat between parallel contact and main circuit contact is set between parallel contact and main circuit contact.

Further, the contact matching surfaces of the parallel contact and the contact are planar structures, the parallel contact is provided with extension parts extending towards two sides relative to the contact, a spacing space is respectively formed between the two extension parts and the main loop contact, and a conducting part is respectively arranged in the two spacing spaces.

Further, the conductive part is a heat-conducting rubber pad with heat conducting property.

Further, the parallel contact and the conductive part are of a metal piece structure with heat conducting property and electric conducting property.

Further, the conductive part is a bent metal sheet with elastic deformation performance, and the bent metal sheet is configured to be elastically abutted between the parallel contact sheet and the main loop contact sheet, so that a parallel electrical connection structure is formed between the parallel contact sheet and the main loop contact sheet and heat can be mutually conducted.

Further, the cross section of the bent metal sheet is shaped like a Chinese character 'ji'.

Further, an embedded groove corresponding to the contact is formed in the parallel contact, the depth of the embedded groove is matched with the thickness of the contact, the convex parts formed on the two sides of the embedded groove in an integrated mode form a conducting part used for conducting heat between the parallel contact and the main circuit contact, and when the contact is correspondingly embedded into the embedded groove of the parallel contact, the convex parts on the two sides of the embedded groove are in tight abutting fit with the main circuit contact, so that heat can be conducted between the parallel contact and the main circuit contact.

Further, the parallel contact is a metal sheet structure with heat conducting property and electric conducting property, so that a parallel electric connection structure is formed between the parallel contact and the main loop contact and heat can be conducted mutually.

Further, the fastener is a screw, a nail hole for the screw to pass through is formed in the contact of the electronic component, and the main loop contact, the contact and the parallel contact are locked and fixed through the screw.

Based on the same conception, the utility model also provides control equipment which is a high-voltage control box or a high-voltage distribution box for the high-voltage circuit system of the electric automobile and comprises the electric connection structure of any one of the electronic component contacts.

The technical scheme has the following advantages or beneficial effects:

In the electric connection structure and the control equipment of the electronic component contact, the main loop contact piece is in interference fit with the first contact surface of the contact of the electronic component, meanwhile, the parallel contact piece is in interference fit with the second contact surface of the contact, so that the main loop contact piece corresponds to the parallel contact piece up and down, and the conducting part is arranged between the main loop contact piece and the parallel contact piece, and heat can be mutually conducted between the main loop contact piece and the parallel contact piece through the conducting part, so that the heat dissipation area of the connection part between the main loop contact piece and the contact is effectively improved through the additionally arranged parallel contact piece, namely the parallel contact piece is additionally arranged at the electric connection position to increase the local heat conduction area and the heat dissipation area, meanwhile, the quality of the heat source is increased, the mc is increased, the temperature of the heat source is effectively reduced, and the heat management requirement of a product under high current is better met.

Drawings

Fig. 1 is an exploded perspective view of an electrical connection structure according to a first embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a mating structure of an electrical connection structure according to a first embodiment of the present utility model.

Fig. 3 is an exploded perspective view of an electrical connection structure according to a second embodiment of the present utility model.

Fig. 4 is a cross-sectional view of a mating structure of an electrical connection structure according to a second embodiment of the present utility model.

Fig. 5 is an exploded perspective view of an electrical connection structure according to a third embodiment of the present utility model.

Fig. 6 is a cross-sectional view of a mating structure of an electrical connection structure according to a third embodiment of the present utility model.

Fig. 7 is an exploded perspective view of an electrical connection structure of a prior art electronic component contact.

Fig. 8 is a cross-sectional view of a mating structure of an electrical connection structure of a prior art electronic component contact.

Description of the reference numerals:

1. The electronic component comprises a fastener, 2, a main circuit contact, 3, a parallel contact, 4, a heat conduction rubber pad, 5, a bent metal sheet, 6, an electronic component, 31, an extension part, 32, a embedding groove, 33, a convex part, 61 and a contact.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1

Referring to fig. 1, an embodiment of the utility model provides an electrical connection structure of an electronic component contact, which includes a fastener 1, a main circuit contact 2 and a parallel contact 3 having a heat conducting property, wherein a contact 61 of the electronic component 6 has a first contact surface and a second contact surface opposite to each other, at least the main circuit contact 2 is tightly matched with the first contact surface of the contact 61 through the fastener 1, the parallel contact 3 is tightly attached to the second contact surface of the contact 61, and a conducting portion for conducting heat between the parallel contact 3 and the main circuit contact 2 is provided between the parallel contact 3 and the main circuit contact 2. It can be understood that in the present embodiment, the main circuit contact 2 is in interference fit with the first contact surface of the contact 61 of the electronic component 6, and meanwhile, the parallel contact 3 is in interference fit with the second contact surface of the contact 61, so that the main circuit contact 2 corresponds to the parallel contact 3 up and down, and a conductive portion is disposed between the main circuit contact 2 and the parallel contact 3, and the main circuit contact 2 and the parallel contact 3 can mutually conduct heat through the conductive portion, so that the heat dissipation area at the connection position between the main circuit contact 2 and the contact 61 is effectively increased through the added parallel contact 3, that is, the heat conduction cross-section and the heat dissipation area at the connection position are increased, and meanwhile, the quality at the heat source (electrical connection position) is increased, so that the temperature at the heat source is effectively reduced (the specific heat capacity formula: q=mc Δt), so that the thermal management requirement of the product under high current can be better satisfied. In addition, one of the key points of the utility model is to solve the problem that the overcurrent capacity of the main circuit contact (large terminal) and the overcurrent capacity of the electronic component contact (small terminal) are not matched, because the overcurrent area of the electronic component part is small, when the current is increased, the local position temperature of the electronic component contact is easy to be overhigh, the parallel contact can increase the double-layer parallel overcurrent capacity, and meanwhile, the parallel contact can be set according to the actual situation, the production is convenient, and the parallel contact is easy to be combined into the fixed structure of the existing main circuit contact and the electronic component contact.

Referring to fig. 1 and 2, in a preferred embodiment, the contact mating surfaces of the parallel contact 3 and the contact 61 are planar structures, the parallel contact 3 has extension portions 31 extending toward two sides with respect to the contact 61, a space is formed between the extension portions 31 and the main circuit contact 2, and a conductive portion is disposed in the space. In one preferred embodiment, the conductive part is a heat conductive rubber pad 4 with heat conducting property. In this way, the contact 61 is clamped between the main loop contact 2 and the parallel contact 3, the two heat conducting rubber pads 4 are redistributed on two sides of the contact 61 and are padded between the main loop contact 2 and the parallel contact 3, the heat conducting rubber pads 4 not only can conduct heat, but also can play the effect of absorbing assembly tolerance, and the stability of the electric connection part can be effectively improved.

Referring to fig. 1 and 2, in a preferred embodiment, the fastener 1 is a screw, a contact 61 of the electronic component 6 is provided with a nail hole through which the screw passes, and the main circuit contact 2, the contact 61 and the parallel contact 3 are fastened and fixed by the screw. However, it should be understood by those skilled in the art that, in other embodiments, the parallel contact 3 may be integrally connected and fixed to a bottom shell (not shown) of the device, and after the electronic component 6 is mounted in place, the parallel contact 3 closely abuts against a contact surface at the bottom of the contact 61 of the electronic component 6, and the main circuit contact 2 and the contact 61 are locked and fixed by the fastener 1, so that the main circuit contact 2 closely abuts against the contact 61.

In addition, an 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 automobile, and comprises the electrical connection structure of the electronic component contact of any embodiment.

Example two

Referring to fig. 3 and 4, the difference between the present embodiment and the first embodiment is that the parallel contact 3 and the conductive portion are metal structures with heat conducting property and electric conducting property, and the metal structures may be made of copper or aluminum, or the like, which has both heat conducting property and electric conducting property.

Referring to fig. 3 and 4, in a preferred embodiment, the conductive portion is a bent metal sheet 5 with elastic deformation, and the bent metal sheet 5 is configured to elastically abut between the parallel contact 3 and the main loop contact 2, so that a parallel electrical connection structure is formed between the parallel contact 3 and the main loop contact 2 and heat can be mutually conducted. The parallel connection structure refers to that the main circuit contact 2 and the contact 61 are electrically connected, the parallel contact 3 and the contact 61 are electrically connected, meanwhile, the main circuit contact 2 and the parallel contact 3 are connected through the two bending metal sheets 5, and further, the main circuit contact 2 and the parallel contact 3 form a parallel connection structure, so that the current carrying area of the component contact is increased, the overcurrent capacity of the circuit is further increased, meanwhile, the heat dissipation area of the electric connection part is also increased, the heat dissipation effect is improved, and the thermal management requirement of a product under large current is better met. In addition, the bending metal sheet 5 can also play a role in absorbing assembly tolerance, and the stability of the electric connection part can be effectively improved.

Referring to fig. 3 and 4, in a preferred embodiment, the cross section of the bent metal sheet 5 is shaped like a Chinese character 'ji'. However, it should be understood by those skilled in the art that in other embodiments, the cross section of the bent metal sheet 5 may also have a "W" shape or a wave shape, and is not limited to the specific embodiment disclosed in this embodiment.

Example III

Referring to fig. 5 and 6, the difference between the present embodiment and the first embodiment is that a parallel contact 3 is provided with an embedded groove 32 corresponding to the contact 61, the depth of the embedded groove 32 is adapted to the thickness of the contact 61, the protrusions 33 integrally formed at both sides of the embedded groove 32 form a conductive portion for conducting heat between the parallel contact 3 and the main circuit contact 2, and when the contact 61 is correspondingly embedded into the embedded groove 32 of the parallel contact 3, the protrusions 33 at both sides of the embedded groove 32 are in close contact with the main circuit contact 2, so that heat can be mutually conducted between the parallel contact 3 and the main circuit contact 2.

Referring to fig. 5 and 6, in a preferred embodiment, the parallel contact 3 is preferably a metal sheet structure with heat conducting and electric conducting properties, so that a parallel electrical connection structure is formed between the parallel contact 3 and the main loop contact 2 and heat can be conducted mutually.

While the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and that the modifications or substitutions may be made without departing from the spirit and scope of the embodiments of the utility model, so that all other embodiments obtained by those skilled in the art without making any inventive effort fall within the scope of the utility model.

Claims

1. An electrical connection structure of electronic component contacts is characterized by comprising a fastener (1), a main circuit contact (2) and a parallel contact (3) with heat conducting performance, wherein the contact (61) of an electronic component (6) is provided with a first contact surface and a second contact surface which are opposite, at least the main circuit contact (2) is tightly matched with the first contact surface of the contact (61) through the fastener (1), the parallel contact (3) is configured to be tightly adhered to the second contact surface of the contact (61), and a conducting part at least used for conducting heat between the parallel contact (3) and the main circuit contact (2) is arranged between the parallel contact (3) and the main circuit contact (2).

2. The electrical connection structure of contacts for electronic components according to claim 1, wherein the contact mating surfaces of the parallel contact (3) corresponding to the contacts (61) are planar structures, the parallel contact (3) has extension portions (31) extending toward both sides with respect to the contacts (61), a space is formed between the extension portions (31) and the main circuit contact (2), and a conductive portion is disposed in each of the space.

3. The electrical connection structure of electronic component contacts according to claim 2, wherein the conductive portion is a thermal conductive rubber pad (4) having thermal conductivity.

4. The electrical connection structure of electronic component contacts according to claim 2, wherein the parallel contact piece (3) and the conductive portion are a metal piece structure having heat conductive property and electric conductive property.

5. The electrical connection structure of electronic component contacts according to claim 4, wherein the conductive portion is a bent metal sheet (5) having elastic deformation property, and the bent 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 electrical connection structure and can mutually conduct heat.

6. The electrical connection structure of electronic component contacts according to claim 5, wherein the cross section of the bent metal sheet (5) is shaped like a Chinese character 'ji'.

7. The electrical connection structure of contacts of electronic components according to claim 1, wherein an embedded groove (32) corresponding to the contact (61) is formed on the parallel contact (3), the depth of the embedded groove (32) is matched with the thickness of the contact (61), the convex parts (33) integrally formed on two sides of the embedded groove (32) form a conduction part for conducting heat between the parallel contact (3) and the main circuit contact (2), and when the contact (61) is correspondingly embedded into the embedded groove (32) of the parallel contact (3), the convex parts (33) on two sides of the embedded groove (32) are in close contact with the main circuit contact (2) so that the parallel contact (3) and the main circuit contact (2) can conduct heat mutually.

8. The electrical connection structure of electronic component contacts according to claim 7, wherein the parallel contact (3) is a metal sheet structure having heat conducting property and electrical conductivity, so that the parallel contact (3) and the main circuit contact (2) form a parallel electrical connection structure and can mutually conduct heat.

9. The electrical connection structure of electronic component contacts according to any one of claims 1 to 8, wherein the fastener (1) is a screw, the contact (61) of the electronic component (6) is provided with a nail hole through which the screw passes, and the main circuit contact (2), the contact (61) and the parallel contact (3) are fastened and fixed by the screw.

10. The control device is characterized by being a high-voltage control box or a high-voltage distribution box for a high-voltage circuit system of an electric automobile, and comprising the electrical connection structure of the electronic component contact of any one of claims 1 to 9.