Circuit board and electronic equipment

Abstract

The embodiment of the utility model relates to the technical field of electric appliance parts, and particularly discloses a circuit board and electronic equipment. The sheath is arranged on the circuit board body, and the sheath is provided with a mounting cavity; the electronic component comprises an electronic component body and a mounting pin, at least one part of the electronic component body is accommodated in the mounting cavity, one end of the mounting pin is connected to the electronic component, and at least one part of the other end of the mounting pin extends out of the mounting cavity; and the other end of the mounting pin is connected to the circuit board body. Through the above mode, when the electronic component is installed on the circuit board, the existence of the sheath can prevent the electronic component from being suspended, and the installation pin of the electronic component is not easy to break under the action of external force.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of electrical components, and in particular to a circuit board and an electronic device. Background Art

[0002] As the functions of new energy vehicles become more and more powerful, new energy vehicles are becoming more and more popular among users. New energy vehicles usually use IGBT (Insulated Gate Bipolar Transistor) as an efficient and fast switch to achieve voltage conversion and AC / DC conversion between components.

[0003] In the process of realizing the present invention, the inventors of the present invention found that: currently, the IGBT device includes an IGBT body and mounting pins extending from the IGBT body, the mounting pins are bent 90 degrees and welded on the circuit board, and the rear end of the IGBT body mounted on the circuit board away from the circuit board will be in a suspended state, which is easily bumped by external forces during the transfer process, causing the mounting pins to deform and break, thereby affecting the performance of the IGBT. Utility Model Content

[0004] The main technical problem solved by the embodiments of the utility model is to provide a circuit board and an electronic device, which can prevent the electronic components from being suspended in the air during installation, thereby causing the installation pins of the electronic components to break.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: providing a circuit board, including a circuit board body; a sheath, arranged on the circuit board body, the sheath defines an installation cavity; an electronic component, including an electronic component body and an installation pin, at least a part of the electronic component body is accommodated in the installation cavity, one end of the installation pin is connected to the electronic component, the other end of the installation pin at least partially extends out of the installation cavity, and the other end of the installation pin is connected to the circuit board body.

[0006] Optionally, the circuit board body is provided with a mounting portion, and the sheath is fixed on the mounting portion.

[0007] Optionally, the mounting portion is formed as an avoidance groove or an avoidance hole.

[0008] Optionally, the two ends of the sheath in the length direction include a first end and a second end, the first end is provided with a first step, and the second end is provided with a second step; the edge of the circuit board body is concave to form the avoidance groove, and the circuit board body has a first part and a second part located at the two ends of the avoidance groove in the length direction; the first part abuts or clamps on the first step, and the second part abuts or clamps on the second step.

[0009] Optionally, the sheath is provided with through holes, and the through holes are all communicated with the installation cavity.

[0010] Optionally, the mounting pin includes a second connecting section and a first connecting section, the second connecting section extends outward from the surface of the electronic component body, and at least a portion of the second connecting section is formed into an arc shape; one end of the first connecting section is connected to an end of the second connecting section away from the electronic component body; the angle formed by the tangent of the first connecting section at the connection between the first connecting section and the second connecting section and the tangent of the second connecting section at the connection between the first connecting section and the second connecting section is an acute angle or a right angle.

[0011] Optionally, the second connecting section includes an extension section and an arc section, the extension section extends outward from the surface of the electronic component body; one end of the arc section is connected to an end of the extension section away from the electronic component body, and the other end of the arc section is connected to one end of the first connecting section.

[0012] Optionally, there are multiple mounting pins, and the multiple mounting pins are arranged side by side and spaced apart, and the other end of the first connecting section of each mounting pin is welded to the circuit board body; the circuit board body is provided with multiple second through holes, and there is at least one second through hole between any two adjacent mounting pins.

[0013] Optionally, the circuit board further includes at least one insulating sleeve, and the insulating sleeve is sleeved on the mounting pin.

[0014] In order to solve the above technical problem, another technical solution adopted by the present invention is: to provide an electronic device, including the above circuit board.

[0015] The beneficial effects of the embodiment of the utility model are as follows: Different from the prior art, the embodiment of the utility model provides a circuit board, including a circuit board body; a sheath, which is arranged on the circuit board body, and the sheath is provided with an installation cavity; an electronic component, including an electronic component body and an installation pin, at least a part of the electronic component body is accommodated in the installation cavity, one end of the installation pin is connected to the electronic component, the other end of the installation pin extends out of the installation cavity, and the other end of the installation pin is connected to the circuit board body. In the above manner, when the electronic component is installed on the circuit board, due to the presence of the sheath, the electronic component is avoided from being suspended in the air, and the electronic component is also protected, reducing the risk of failure of the installation pin caused by external force interference during the installation and transfer of the electronic component, and improving the stability of the connection between the electronic component and the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0017] Figure 1 It is an exploded diagram of a circuit board provided by an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of an assembly of a circuit board provided by an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a circuit board body provided by an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a sheath provided by an embodiment of the utility model;

[0021] Figure 5 is a schematic diagram of another viewing angle of a sheath provided by an embodiment of the utility model;

[0022] Figure 6 It is a schematic diagram of an electronic component provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0025] See also Figure 1 Combined with Figure 2The circuit board 1000 includes a circuit board body 1, a sheath 2, an electronic component 3 and an insulating sheath 4, wherein the sheath 2 is arranged on the circuit board body 1, at least a part of the electronic component 3 is accommodated in the sheath 2, and the electronic component 3 is electrically connected to the circuit board body 1, and the insulating sheath 4 is sleeved on the electronic component 3 to provide insulation protection for the electronic component 3. By adding the sheath 2 between the electronic component 3 and the circuit board body 1, the electronic component 3 installed on the circuit board body 1 is no longer suspended in the air, thereby reducing the possibility that the installation stability of the electronic component 3 is destroyed due to external force, and the existence of the sheath 2 further enhances the insulation between the electronic component 3 and other electronic components, thereby ensuring the working stability of the electronic component 3.

[0026] For the circuit board body 1, please refer to Figure 3 , the circuit board body 1 is provided with a mounting portion 1a (not shown), the mounting portion 1a is formed as an avoidance groove 11 or avoidance hole (not shown), and a plurality of second through holes 12, the sleeve 2 is fixed on the mounting portion 1a, that is, the sleeve 2 is accommodated in the avoidance groove 11, the avoidance groove 11 is located at the edge of the circuit board body 1 where the electronic component 3 needs to be installed, the specific position and size can be adjusted according to actual needs, and this embodiment will not be illustrated one by one. The second through hole 12 is used to enhance the insulation of the electronic component 3 installed on the circuit board body 1. It can be understood that the mounting portion 1a can also be a specific area on the circuit board body 1 for installing the sleeve 2, and the avoidance hole is a hole opened on the circuit board body 1 for placing the sleeve 2.

[0027] In some embodiments, the edge of the circuit board body 1 is concave to form the avoidance groove 11, and the circuit board body 1 also has a first part 13 and a second part 14 located at both ends of the avoidance groove 11 in the length direction, and the first part 13 and the second part 14 are used to abut the sleeve 2, so that the circuit board body 1 provides certain support for the sleeve 2 accommodated in the avoidance groove 11.

[0028] For the above mentioned sheath 2, see Figure 4 Combined with Figure 5The sleeve 2 defines a mounting cavity 21, and is provided with a through hole 22, a first end 23 and a second end 24. The through hole 22 can be subdivided into a heat dissipation hole 22a and a mounting hole 22b. The mounting cavity 21 is used to accommodate the electronic component 3. The through holes 22 are all connected to the mounting cavity 21. The heat dissipation holes 22a are distributed on the inner wall of the mounting cavity 21, which is conducive to increasing the contact area between the electronic component 3 located in the mounting cavity 21 and the outside, thereby improving the heat dissipation of the electronic component 3. In addition, the design of the heat dissipation holes 22a reduces the weight of the sleeve 2 as a whole, and reduces the load borne by the circuit board body 1. The mounting hole 22b is used when the sleeve 2 is installed on an external device. Along the two ends of the length direction of the sleeve 2, the sleeve 2 has a first end 23 and a second end 24. The first end 23 and the second end 24 are located on the bottom surface of the sleeve 2. The first end 23 and the second end 24 are used to provide abutment space for the first part 13 and the second part 14 of the above-mentioned circuit board body 1.

[0029] It can be understood that the heat dissipation hole 22a can exist only on the bottom wall of the installation cavity 21, and / or the heat dissipation hole 22a can also exist only on the side wall of the installation cavity 21, and the size and shape of the heat dissipation hole 22a can be designed according to the size of the inner walls of the actual installation cavity 21. When the span of the heat dissipation hole 22a in the length or width direction is large, corresponding reinforcing ribs (not marked) can be set in the heat dissipation hole 22a to enhance the overall structural strength of the sheath 2.

[0030] In some embodiments, the heat dissipation hole 22 a may not exist, and it does not affect the function of the sheath 2 to accommodate and support the electronic component 3 .

[0031] It can be understood that the installation method of the sheath 2 and the external device includes but is not limited to screwing the sheath 2 to the external device by passing screws, bolts or other threaded parts through the installation hole 22b, and the sheath 2 can also be connected to the external device by means of clamping, gluing or the like, for example: the sheath 2 is provided with a buckle, and the external device is provided with a corresponding slot; the sheath 2 and the external device are fixed by using heat-resistant glue. Other situations are not described one by one in this embodiment.

[0032] In some embodiments, along the length direction of the sheath 2, the first end 23 is provided with a first step 231, and the second end 24 is provided with a second step 241. The first part 13 abuts or is clamped on the first step 231, and the second part 14 abuts or is clamped on the second step 241. By clamping the first part 13 with the first step 231, and clamping the second part 14 with the second step 241, the sheath 2 is limited along the height direction of the avoidance groove 11, and the sheath 2 is limited along the length direction of the avoidance groove 11.

[0033] It can be understood that the first step 231 is located on the bottom surface of the sleeve 2, and is recessed toward the height direction of the avoidance groove 11 at one end along the length direction of the avoidance groove 11. Similarly, the second step 241 is located on the bottom surface of the sleeve 2, and is recessed toward the height direction of the avoidance groove 11 at the other end along the length direction of the avoidance groove 11. The depth and width of the recess are set according to actual needs, and will not be separately illustrated in this embodiment.

[0034] It is worth noting that the length direction of the avoidance groove 11 and / or the cover 2, the width direction of the avoidance groove 11 and / or the cover 2, and the height direction of the avoidance groove 11 are perpendicular to each other, and in this embodiment, the length direction of the avoidance groove 11 and / or the cover 2 corresponds to the X-axis direction of the coordinate system, the width direction of the avoidance groove 11 and / or the cover 2 corresponds to the Y-axis direction of the coordinate system, and the height direction of the avoidance groove 11 corresponds to the Z-axis direction of the coordinate system.

[0035] It is worth noting that the number of the mounting cavities 21 of the sheath 2 includes but is not limited to one. When a plurality of mounting cavities 21 are provided in the sheath 2, the mounting cavities 21 are evenly spaced and distributed in a certain order, for example, along the length direction and / or width direction of the sheath 2, spaced and distributed, and / or distributed in a rectangular array. The specific distribution method needs to be designed in combination with actual needs, and will not be described one by one by examples. When a plurality of electronic components 3 are arranged and respectively accommodated in the mounting cavities 21 in the above-mentioned manner, each electronic component 3 can be isolated from each other to improve the insulation between each electronic component 3. The good thermal conductivity of the sheath 2 reduces the mutual influence of heat dissipation between each electronic component 3. And the mounting hole 22b is located between any two adjacent mounting cavities 21. The number of the mounting holes 22b is a positive integer greater than or equal to one, and the specific number is selected according to actual needs. In this embodiment, Figure 5 As shown, the plurality of mounting cavities 21 are evenly spaced and distributed along the length direction of the avoidance groove 11 , and a mounting hole 22 b is provided between two adjacent mounting cavities 21 .

[0036] It is worth noting that the material of the sheath 2 includes but is not limited to plastic, hard rubber, etc.

[0037] For the above electronic components 3, please refer to Figure 6 The electronic component 3 includes an electronic component body 31 and a mounting pin 32. At least a portion of the electronic component body 31 is accommodated in the mounting cavity 21. One end of the mounting pin 32 is connected to the electronic component 3. The other end of the mounting pin 32 at least partially extends out of the mounting cavity 21, and the other end of the mounting pin 32 is connected to the circuit board body 1.

[0038] It is worth noting that the electronic component 3 includes but is not limited to a diode, an electronic switch, an IGBT (Insulated Gate Bipolar Transistor), etc. The number of the mounting pins 32 is a positive integer equal to or greater than one, and different electronic components 3 are designed to lead out different numbers of mounting pins 32 according to their structure and function. In this embodiment, the electronic component 3 is preferably an IGBT.

[0039] For mounting pin 32 above, see Figure 6 The mounting pin 32 includes a first connecting section 321 and a second connecting section 322. The second connecting section 322 extends outward from the surface of the electronic component 3, and at least a portion of the second connecting section 322 is formed into an arc shape. The arc formed by the second connecting section 322 constitutes a buffer structure, which is beneficial for the mounting pin 32 to bear more external loads during the installation process. The first connecting section 321 and the second connecting section 322 that are directly bent at 90 degrees are easily broken at their bending positions after being subjected to external loads, thereby affecting the service life of the electronic component 3.

[0040] One end of the first connection section 321 is connected to one end of the second connection section 322 away from the electronic component body 31. The angle formed by the tangent of the first connection section 321 at the connection between the first connection section 321 and the second connection section 322 and the tangent of the second connection section 322 at the connection between the first connection section 321 and the second connection section 322 is an acute angle or a right angle. The setting of the angle helps to save the space occupied by the electronic component 3 when it is installed on the circuit board body 1, otherwise it will cause waste of space in the circuit board body 1. For example, when the angle is an obtuse angle, the first connection section 321 is distributed on one side away from the electronic component body 31 as a whole. Under this structure, the space occupied by the circuit board body 1 where the installation pin 32 is located is relatively large, wasting precious wiring space of the circuit board body 1.

[0041] In some embodiments, the second connecting section 322 includes an extension section 3221 and an arc section 3222, wherein the extension section 3221 extends outward from the surface of the electronic component body 31; one end of the arc section 3222 is connected to an end of the extension section 3221 away from the electronic component body 31, and the other end of the arc section 3222 is connected to one end of the first connecting section 321, wherein the bending direction of the arc section 3222 is toward the circuit board body 1, and the existence of the arc section 3222 increases the overall bending resistance of the mounting pin 32. Compared with the mounting pin 32 without the arc section 3222, the mounting pin 32 in this embodiment can bear a larger external load, and the possibility of fracture failure of the mounting pin 32 with the arc section 3222 is also greatly reduced.

[0042] In some embodiments, there are multiple mounting pins 32, and the multiple mounting pins 32 are arranged side by side, and the other end of the first connecting section 321 of each mounting pin 32 is welded to the circuit board body 1, and there is at least one second through hole 12 between any two adjacent mounting pins 32. The existence of the second through hole 12 isolates the possibility of short circuit between two adjacent mounting pins 32 on the circuit board body 1. It can be understood that the shape of the second through hole 32 includes but is not limited to a long strip, an oval, a square, etc.

[0043] It is worth noting that the specific number of the mounting pins 32 needs to be set according to different electronic components 3 in combination with actual conditions. In this embodiment, the preferred number of mounting pins 32 for each IGBT is three, and the three mounting pins 32 are spaced apart in sequence along the length direction of the electronic component 3.

[0044] For the above insulation sleeve 4, please refer to Figure 1 , the number of the insulating sleeve 4 is at least one, and it can be understood that the number of the insulating sleeves 4 corresponds to the number of the mounting pins 32, and the insulating sleeves 4 are sleeved on the mounting pins 32, and the insulating sleeves 4 sleeved on the mounting pins 32 enhance the insulation effect between the mounting pins 32. In the IGBT under high-voltage environment, the thickness of the package insulation layer of the mounting pins 32 is relatively thin due to the reduction of the overall size of the IGBT, and the existence of the insulating sleeve 4 provides protection for the IGBT working under high-voltage environment.

[0045] It is worth noting that the material of the insulating sleeve 4 includes but is not limited to: rubber, plastic, composite materials (glass fiber reinforced plastic (GFRP), carbon fiber reinforced plastic (CFRP), etc.), etc. The specific required material is selected according to actual needs. In this embodiment, the preferred material of the insulating sleeve 4 is rubber. The rubber material has a strong elastic deformation ability and can better wrap the parts that need to be insulated, such as the connecting part 321 in this embodiment.

[0046] In an embodiment of the utility model, a circuit board 1000 includes a circuit board body 1, a cover 2, an electronic component 3 and an insulating cover 4, wherein the cover 2 is arranged on the circuit board body 1, at least a portion of the electronic component 3 is accommodated in the cover 2, and the electronic component 3 is electrically connected to the circuit board body 1, and the insulating cover 4 is sleeved on the electronic component 3 to provide insulation protection for the electronic component 3. By adding the cover 2 between the electronic component 3 and the circuit board body 1, the electronic component 3 installed on the circuit board body 1 is no longer suspended in the air, thereby reducing the possibility that the installation stability of the electronic component 3 is destroyed due to external force, and the presence of the cover 2 further enhances the insulation between the electronic component 3 and other electronic components, thereby ensuring the working stability of the electronic component 3.

[0047] The utility model further provides an electronic device embodiment, the electronic device includes the circuit board 1000. The structure and function of the circuit board 1000 can refer to the above embodiments, which will not be described in detail here.

[0048] It should be noted that the preferred embodiments of the utility model are given in the specification and drawings of the utility model, but the utility model can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional restrictions on the content of the utility model. The purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A circuit board, characterized in that: include Circuit board body; A sheath, disposed on the circuit board body, the sheath defining a mounting cavity; An electronic component comprises an electronic component body and a mounting pin, wherein at least a portion of the electronic component body is accommodated in the mounting cavity, one end of the mounting pin is connected to the electronic component, the other end of the mounting pin at least partially extends out of the mounting cavity, and the other end of the mounting pin is connected to the circuit board body.

2. The circuit board according to claim 1, characterized in that: The circuit board body is provided with a mounting portion, and the sheath is fixed on the mounting portion.

3. The circuit board according to claim 2, characterized in that: The mounting portion is formed as an avoidance groove or an avoidance hole.

4. The circuit board according to claim 3, characterized in that: The two ends of the sheath in the length direction include a first end and a second end, the first end is provided with a first step, and the second end is provided with a second step; The edge of the circuit board body is concave to form the avoidance groove, and the circuit board body has a first part and a second part located at two ends of the avoidance groove in the length direction; The first part abuts or is engaged with the first step, and the second part abuts or is engaged with the second step.

5. The circuit board according to claim 1, characterized in that: The sheath is provided with through holes, and the through holes are all communicated with the installation cavity.

6. The circuit board according to any one of claims 1 to 5, characterized in that: The mounting pin comprises a second connecting section and a first connecting section, the second connecting section extends outward from the surface of the electronic component body, and at least a portion of the second connecting section is formed into an arc shape; One end of the first connecting section is connected to an end of the second connecting section away from the electronic component body; An angle formed by a tangent line of the first connecting segment at a connection point between the first connecting segment and the second connecting segment and a tangent line of the second connecting segment at a connection point between the first connecting segment and the second connecting segment is an acute angle or a right angle.

7. The circuit board according to claim 6, characterized in that: The second connecting section includes an extension section and an arc section, and the extension section extends outward from the surface of the electronic component body; One end of the arc segment is connected to an end of the extension segment away from the electronic component body, and the other end of the arc segment is connected to one end of the first connecting segment.

8. The circuit board according to claim 6, characterized in that: There are multiple mounting pins, the multiple mounting pins are arranged side by side and spaced apart, and the other end of the first connecting section of each mounting pin is welded to the circuit board body; The circuit board body is provided with a plurality of second through holes, and there is at least one second through hole between any two adjacent mounting pins.

9. The circuit board according to claim 6, characterized in that: The circuit board also includes at least one insulating sleeve, and the insulating sleeve is sleeved on the mounting pin.

10. An electronic device, characterized in that: Comprising a circuit board as described in any one of claims 1-8.

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