Relay terminal plate, method for manufacturing the same, battery relay, and jig

Abstract

The application provides a relay terminal plate and a preparation method thereof, a battery relay and a jig, and belongs to the technical field of batteries. The relay terminal plate comprises a PCB plate and a terminal. The PCB plate has a mounting hole, and the terminal comprises a body part and an insertion part, and the insertion part is used for inserting the mounting hole. The insertion part comprises a first end away from the body part and a second end towards the body part, the size of the cross section of the first end is smaller than the size of the mounting hole, and the size of the cross section of the insertion part gradually increases in the first direction. The first direction is from the first end to the second end. The application transfers the single component precision optimization to the error offset of the assembly process, can meet the height size and tolerance requirements of the assembled relay terminal plate, reduces the processing cost, and improves the compatibility.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a relay terminal board and its preparation method, a battery relay, and a fixture. Background Technology

[0002] The relay terminal block is a core component of a battery relay, assembled from a PCB board and terminals. In some cases, the overall height and dimensions of the relay terminal block are subject to stringent requirements, demanding a small tolerance range. Since the relay terminal block is assembled from two components, and each component has certain tolerances during manufacturing, the cumulative tolerance after assembly is large, making it difficult to meet the height and tolerance requirements of the assembled relay terminal block.

[0003] Therefore, how to meet the height and tolerance requirements of the relay terminal block after assembly is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the background art. Therefore, one object of this application is to provide a relay terminal block and its manufacturing method, a battery relay, and a fixture, to meet the height and tolerance requirements of the assembled relay terminal block.

[0005] An embodiment of the first aspect of this application provides a relay terminal block, including a PCB board and terminals. The PCB board has mounting holes, and the terminals include a body portion and an insertion portion, the insertion portion being inserted into the mounting holes. The insertion portion includes a first end facing away from the body portion and a second end facing the body portion. The cross-sectional dimension of the first end is smaller than the dimension of the mounting hole, and the cross-sectional dimension of the insertion portion gradually increases along a first direction. The first direction is the direction from the first end to the second end.

[0006] In some embodiments, an adjustment gap is provided between the body portion and the PCB board, and the body portion and the PCB board form an assembly structure. The adjustment gap is used to adjust the overall size of the assembly structure along a first direction.

[0007] In some embodiments, the terminal further includes a connecting portion located between the body portion and the insertion portion, wherein the cross-sectional dimension of the connecting portion is greater than or equal to the dimension of the mounting hole and equal to the cross-sectional dimension of the second end.

[0008] In some embodiments, the sum of the dimensions of the body, the connecting part, and the PCB board along the first direction is greater than the preset height of the relay terminal board.

[0009] In some embodiments, the cross-sectional shape of the insertion portion is configured as square, and the dimension of the cross-section of the insertion portion is the diagonal length of the square.

[0010] In some embodiments, the mounting hole is configured as a circular hole, and the size of the mounting hole is the diameter of the mounting hole.

[0011] In some embodiments, there are two insertion parts, which are located at opposite ends of the body.

[0012] An embodiment of the second aspect of this application also provides a method for preparing a relay terminal block as described in any of the above embodiments, comprising: Provide PCB boards and terminals; Pre-insert the terminal insert into the mounting hole on the PCB board; Press the terminals toward the PCB board; Solder the terminals to the PCB board.

[0013] An embodiment of the third aspect of this application also provides a battery relay, including a relay terminal block as described in any of the above embodiments.

[0014] An embodiment of the fourth aspect of this application also provides a fixture for manufacturing a relay terminal block as described in any of the above embodiments, comprising: a fixing plate, a standard part, and a pressing plate.

[0015] The technical solutions of this application embodiment can achieve at least the following technical effects: By setting the insertion part of the terminal to be conical, it breaks through the traditional thinking of improving assembly accuracy based on the accuracy compensation calculation of individual components and relying on high-cost precision machining to improve the tolerance of parts. It shifts the optimization of the accuracy of individual components to the error compensation of the assembly process, which can meet the height and tolerance requirements of the relay terminal board after assembly, reduce processing costs and improve compatibility.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0018] Figure 1 This is a schematic diagram of the structure of a relay terminal block according to some embodiments of this application; Figure 2 This is one of the structural schematic diagrams of terminals in some embodiments of this application; Figure 3 This is a partial structural schematic diagram of a relay terminal block according to some embodiments of this application; Figure 4 This is a second schematic diagram of the structure of a terminal in some embodiments of this application; Figure 5 This is a schematic diagram of the mating structure between terminals and mounting holes in some embodiments of this application; Figure 6 This is a schematic flowchart of the preparation method for some embodiments of this application; Figure 7 This is a schematic diagram of the structure of a fixture according to some embodiments of this application.

[0019] Explanation of reference numerals in the attached figures: 100. Relay terminal block; 10. PCB board; 11. Mounting holes; 20. Terminal; 21. Body part; 22. Insertion part; 23. Connecting part; 200. Fixture; 210. Fixing plate; 220. Standard parts; 230. Pressing plate; F1, First Direction. Detailed Implementation

[0020] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0022] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0025] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0026] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0027] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0028] First, combine Figure 1 The structure of the relay terminal block is described, such as... Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a relay terminal block according to some embodiments of this application.

[0029] The relay terminal board 100 includes a PCB board 10 and terminals 20. After the terminals 20 are inserted into the PCB board 10, the two are soldered together to obtain the relay terminal board 100.

[0030] In some cases, the product's dimensional requirements are as follows: the height H1 from the upper surface of terminal 20 to the bottom of PCB board 10 is 5.2 ± 0.1 mm, the thickness of PCB board 10 is 1.6 mm, and the tolerance of PCB board 10 can only be controlled within ±10%, which is ±0.16 mm. It can be seen that without accumulating the tolerance of terminal 20, the tolerance of PCB board 10 alone exceeds the product's dimensional requirements, making it difficult for the assembled dimensions to meet the product's dimensional requirements.

[0031] Based on the above issues, combined with Figures 2 to 5 , Figure 2 This is one of the structural schematic diagrams of terminals in some embodiments of this application; Figure 3 This is a partial structural schematic diagram of a relay terminal block according to some embodiments of this application; Figure 4 This is a second schematic diagram of the structure of a terminal in some embodiments of this application; Figure 5 This is a schematic diagram illustrating the mating structure of terminals and mounting holes in some embodiments of this application. An embodiment of this application provides a relay terminal board 100, including a PCB board 10 and terminals 20.

[0032] The PCB board 10 has mounting holes 11. The terminal 20 includes a body portion 21 and an insertion portion 22, which is inserted into the mounting hole 11. The insertion portion 22 includes a first end facing away from the body portion 21 and a second end facing the body portion 21. The cross-sectional dimension of the first end is smaller than the dimension of the mounting hole 11, and the cross-sectional dimension of the insertion portion 22 gradually increases along a first direction F1. The first direction F1 is the direction from the first end to the second end.

[0033] PCB board 10 is a printed circuit board (PCB), which is the core basic component of the electronic system that carries components and provides electrical connections.

[0034] Terminal 20 is a component used to transmit electrical signals or conduct electricity in realizing an electrical connection. The insertion part 22 serves as a pin, and the body part 21 supports the insertion part.

[0035] If the cross-sectional dimension of the first end of the insertion part 22 is smaller than the dimension of the mounting hole 11, then the fit between the first end and the mounting hole 11 is a clearance fit, so as to facilitate the assembly of the terminal 20 and the PCB board 10.

[0036] Along the first direction F1, the cross-sectional dimension of the insertion part 22 gradually increases. It can be understood that the insertion part 22 is conical, and the first end of the insertion part 22 is clearance-fitted with the mounting hole 11. During assembly, the insertion part 22 can move relative to the PCB board 10 to a certain extent, thereby adjusting the positional relationship between the body part 21 and the PCB board 10. In this way, the accuracy error of individual parts can be compensated by adjusting the assembly process. Compared with the method of relying on high-precision machining to improve the tolerance of parts, the assembly process of this application has controllable accuracy and high consistency, which reduces the processing cost and improves compatibility.

[0037] In some embodiments, the relay terminal board 100 can be assembled by pre-inserting the insertion portion 22 of the terminal 20 into the mounting hole 11 on the PCB board 10. At this time, the dimension from the top surface of the body portion 21 to the bottom of the PCB board 10 is greater than the preset height. The assembled component is placed on the fixing plate 210. At the same time, a standard part 220 with a preset height is provided on the fixing plate 210. The terminal 20 is pressed towards the PCB board 10 using the pressing plate 230 until the pressing plate 230 abuts against the standard part 220. At this time, the dimension from the top surface of the body portion 21 to the bottom of the PCB board 10 is equal to the preset height of the standard part 220. The terminal 20 is then soldered to the PCB board 10, thus obtaining a relay terminal board 100 that meets the size requirements.

[0038] By setting the insertion part 22 of the terminal 20 to a conical shape, the traditional thinking of improving assembly accuracy based on the accuracy compensation calculation of individual components and relying on high-cost precision machining to improve the tolerance of parts is broken. The accuracy optimization of individual components is transferred to the error compensation of the assembly process, which can meet the height and tolerance requirements of the relay terminal board 100 after assembly, reduce processing costs and improve compatibility.

[0039] like Figure 3 As shown, according to some embodiments of this application, an adjustment gap C is constructed between the body part 21 and the PCB board 10, and the body part 21 and the PCB board 10 form an assembly structure. The adjustment gap C is used to adjust the overall size of the assembly structure along the first direction F1.

[0040] An adjustment gap C is constructed between the main body 21 and the PCB board 10. Since the main body 21 and the PCB board 10 do not contact each other, when the terminal 20 is pre-inserted into the PCB board 10, the adjustment gap C can provide a certain margin for subsequent pressing, thereby achieving the purpose of offsetting the error of a single component during the assembly process and thus meeting the size requirements of the product.

[0041] Combination Figure 3 and Figure 4As shown, according to some embodiments of this application, the terminal 20 further includes a connecting portion 23 located between the body portion 21 and the insertion portion 22. The cross-sectional dimension of the connecting portion 23 is greater than or equal to the dimension of the mounting hole 11 and equal to the cross-sectional dimension of the second end.

[0042] If the cross-sectional dimension of the connecting part 23 is greater than or equal to the dimension of the mounting hole 11, then the fit between the connecting part 23 and the mounting hole 11 is an interference fit. When the terminal 20 is pre-inserted into the PCB board 10, the terminal 20 is difficult to insert until the body part 21 contacts the PCB board 10, thus avoiding the terminal 20 from being inserted to the bottom to a certain extent, thereby forming an adjustment gap C, and providing a margin for subsequent pressing.

[0043] Combination Figure 3 and Figure 4 As shown, according to some embodiments of this application, the sum of the dimensions of the body portion 21, the connecting portion 23, and the PCB board 10 along the first direction F1 is greater than the preset height of the relay terminal board 100.

[0044] The sum of the dimensions of the main body 21, the connecting part 23, and the PCB board 10 along the first direction F1 is set to be greater than the preset height of the relay terminal board 100. In this way, by utilizing the interference fit between the connecting part 23 and the mounting hole 11, the connecting part 23 has sufficient length to provide an adjustment gap C for pre-insertion, which to a certain extent overcomes the problem of the terminal 20 being inserted to the bottom due to excessive pre-insertion force.

[0045] In some embodiments, the product dimensions are required to be 5.2±0.1mm in height from the upper surface of terminal 20 to the bottom of PCB board 10, 3.5mm in height of body 21, 0.5mm in length of connecting part 23, and 1.6mm in thickness of PCB board 10, with the sum of the three dimensions being 5.6mm, thereby providing a certain pressing allowance so that the product dimensions can be pressed to 5.2±0.1mm through subsequent pressing.

[0046] Combination Figure 2 and Figure 5 As shown, according to some embodiments of this application, the cross-sectional shape of the insertion part 22 is configured as a square, and the dimension of the cross-section of the insertion part 22 is the diagonal length of the square.

[0047] Combination Figure 2 and Figure 5 As shown, according to some embodiments of this application, the mounting hole 11 is configured as a circular hole, and the size of the mounting hole 11 is the diameter of the mounting hole 11.

[0048] In some embodiments, the diameter of the mounting hole 11 is 1.5 mm, the diagonal length of the first end of the insertion part 22 can be 1.2 mm, and the diagonal length of the second end can be 1.5 mm, which matches the diameter of the mounting hole 11, thereby preventing the terminal 20 from being inserted all the way in.

[0049] like Figure 2 As shown, according to some embodiments of this application, there are two insertion parts 22, and the two insertion parts 22 are located at both ends of the main body part 21.

[0050] The two insertion parts 22 can provide better support for the body part 21 to ensure the flatness of the upper surface of the body part 21.

[0051] like Figure 6 As shown, Figure 6 The following is a flowchart illustrating the preparation method of some embodiments of this application. The second aspect of this application also provides a method for preparing a relay terminal board as described in any of the above embodiments, including steps 610, 620, 630 and 640.

[0052] Step 610: Provide PCB board and terminals.

[0053] Step 620: Insert the terminal insertion part into the mounting hole on the PCB board.

[0054] In this step, the pre-inserted assembly is dimensionally larger than the preset height along the first direction, thus providing leeway for subsequent pressing.

[0055] Step 630: Press the terminals toward the PCB board.

[0056] In this step, the height from the upper surface of the terminal to the bottom of the PCB board is a preset height.

[0057] Step 640: Solder the terminals to the PCB board.

[0058] In this step, the terminals are connected to the PCB board as a whole by soldering, thus obtaining the relay terminal board.

[0059] An embodiment of the third aspect of this application also provides a battery relay, including a relay terminal block 100 as described in any of the above embodiments.

[0060] The electromagnetic relay in this embodiment can have all the beneficial effects of the relay terminal board 100 described above, which will not be repeated here.

[0061] like Figure 7 As shown, Figure 7The present invention provides a structural schematic diagram of a fixture for some embodiments of the present application. The fourth aspect of the present application also provides a fixture 200 for preparing a relay terminal board as described in any of the above embodiments, comprising: a fixing plate 210, a standard part 220 and a pressing plate 230.

[0062] The fixing plate 210 is used to support the PCB board 10. The standard part 220 has a preset height and is set on the fixing plate 210. The pressing plate 230 is used to press the terminal 20 toward the PCB board 10 until the pressing plate 230 abuts against the standard part 220.

[0063] The standard component 220 serves as a limit for the pressing plate 230. When the pressing plate 230 abuts against the standard component 220, it indicates that the pressing plate 230 has pressed the terminal 20 into place. The height from the upper surface of the terminal 20 to the bottom of the PCB board 10 is consistent with the height of the standard component 220, allowing the relay terminal board 100 to be quickly assembled to the preset height with good assembly consistency. Furthermore, different standard components 220 can be replaced according to different size requirements, improving adaptability and compatibility.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A relay terminal block, characterized in that, include: PCB board with mounting holes; A terminal includes a body portion and an insertion portion for insertion into a mounting hole; the insertion portion includes a first end facing away from the body portion and a second end facing the body portion, the cross-sectional dimension of the first end is smaller than the dimension of the mounting hole, and the cross-sectional dimension of the insertion portion gradually increases along a first direction; Wherein, the first direction is the direction from the first end to the second end.

2. The relay terminal block according to claim 1, characterized in that, An adjustment gap is provided between the body part and the PCB board, and the body part and the PCB board form an assembly structure. The adjustment gap is used to adjust the overall size of the assembly structure along the first direction.

3. The relay terminal block according to claim 2, characterized in that, The terminal also includes a connecting portion located between the body portion and the insertion portion, wherein the cross-sectional dimension of the connecting portion is greater than or equal to the dimension of the mounting hole and equal to the cross-sectional dimension of the second end.

4. The relay terminal block according to claim 3, characterized in that, The sum of the dimensions of the main body, the connecting part, and the PCB board along the first direction is greater than the preset height of the relay terminal board.

5. The relay terminal block according to claim 1, characterized in that, The cross-sectional shape of the insertion part is configured as a square, and the dimension of the cross-section of the insertion part is the length of the diagonal of the square.

6. The relay terminal block according to claim 5, characterized in that, The mounting hole is configured as a circular hole, and the size of the mounting hole is the diameter of the mounting hole.

7. The relay terminal block according to any one of claims 1 to 6, characterized in that, The number of the insertion parts is two, and the two insertion parts are located at opposite ends of the main body.

8. A method for preparing a relay terminal block as described in any one of claims 1 to 7, characterized in that, Provide PCB boards and terminals; The insertion portion of the terminal is pre-inserted into the mounting hole on the PCB board; Press the terminals toward the PCB board; The terminals are soldered to the PCB board.

9. A battery relay, characterized in that, include: The relay terminal block as described in any one of claims 1 to 7.

10. A fixture for manufacturing a relay terminal block as described in any one of claims 1 to 7, characterized in that, include: A mounting plate is used to support the PCB board. A standard component, having a preset height, is mounted on a fixed plate; A pressing plate is used to press the terminals toward the PCB board until the pressing plate abuts against the standard component.

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