Circuit board fixing structure

Abstract

The utility model discloses a circuit board fixing structure, and belongs to the technical field of circuit board assembly. The fixing structure comprises a bottom plate and an elastic buckle part arranged on the bottom plate, the elastic buckle part is used for limiting and fixing the circuit board, the elastic buckle part comprises a connecting part and a limiting part, and the connecting part is connected with the bottom plate and extends in the first direction; the limiting part is connected with one end, far away from the bottom plate, of the connecting part and extends towards the bottom plate, a gap is formed between the limiting part and the connecting part, and the limiting part deforms through the gap and limits and fixes the circuit board under deformation. According to the electronic product, the gap is formed between the limiting part and the connecting part, the limiting part deforms through the gap, and the circuit board is limited and fixed under the deformation, so that the circuit board is limited and fixed through the elastic buckle component, and the technical problem that the process of fixing the circuit board in the electronic product and limiting and fixing the circuit board is tedious is solved.

Description

Technical Field

[0001] This application belongs to the field of circuit board assembly technology, specifically relating to a circuit board fixing structure. Background Technology

[0002] With the rapid development of various electronic products, circuit boards are widely used in various electronic products. The circuit board is usually fixed in various electronic products by two housings to fix and limit its position. In this process, the process of fixing and limiting the circuit board inside the electronic product is quite complicated. Utility Model Content

[0003] To address the aforementioned issues, this application provides a circuit board fixing structure that solves the technical problem of the cumbersome process of fixing the circuit board inside an electronic product.

[0004] This application embodiment provides a circuit board fixing structure, the fixing structure including: a base plate and a spring-loaded component disposed on the base plate, the spring-loaded component being used to limit and fix the circuit board, the spring-loaded component including:

[0005] The connecting part is connected to the base plate and extends along the first direction;

[0006] The limiting part is connected to the end of the connecting part away from the base plate and extends toward the base plate. There is a gap between the limiting part and the connecting part. The limiting part deforms through the gap and limits and fixes the circuit board under deformation.

[0007] In some embodiments, the limiting portion has:

[0008] The first guide surface extends away from the connecting part and toward the base plate;

[0009] The first limiting surface is connected to the first guiding surface and faces the base plate. The circuit board moves towards the first limiting surface, abutting against the first guiding surface, so that the first limiting surface abuts against the side of the circuit board away from the base plate.

[0010] In some embodiments, the fixing structure further includes:

[0011] Support components, the support components include:

[0012] A connecting support portion is connected to the base plate and extends along a first direction;

[0013] The extension is connected to the end of the connecting support that is furthest from the base plate;

[0014] The connecting support protrudes from the extension and has a second limiting surface facing the circuit board. The circuit board has a first hole that extends through in a first direction. The extension passes through the first hole and abuts the second limiting surface against the side of the circuit board near the base plate, so that the circuit board is fixed between the first limiting surface and the second limiting surface.

[0015] In some embodiments, the fixing structure further includes:

[0016] The positioning component includes a positioning element that is connected to the base plate and extends along a first direction.

[0017] The circuit board has a second hole that extends through the first direction. When the circuit board is fixed between the first limiting surface and the second limiting surface, the positioning member passes through the second hole to limit the circuit board.

[0018] In some embodiments, the positioning component further includes:

[0019] The first support member is connected to the positioning member and the base plate and extends along the first direction. The first support member has a third limiting surface facing the circuit board. The third limiting surface and the second limiting surface are on the same plane.

[0020] In some embodiments, the fixing structure further includes:

[0021] Limiting components, including:

[0022] The connectors are respectively connected to the base plate and the connecting support and extend along the first direction;

[0023] An extension is connected to the end of the connector facing away from the base plate. The extension has a second guide surface and a fourth limiting surface. The fourth limiting surface faces the extension and is connected to the second guide surface.

[0024] The connector protrudes from the extension and has a fifth limiting surface facing the circuit board. The fifth limiting surface is on the same plane as the second limiting surface. When the circuit board is limited between the first limiting surface and the second limiting surface, the fifth limiting surface and the fourth limiting surface form a limiting step to abut and limit the circuit board.

[0025] In some embodiments, the fixing structure further includes:

[0026] The top plate is opposite to the bottom plate in the first direction;

[0027] A side plate is connected to a bottom plate and extends along a first direction. The side plate forms a receiving cavity on the bottom plate, and the receiving cavity is used to place a circuit board.

[0028] Clips connect to the top plate;

[0029] The snap-fit ​​protrusion is located on the side of the side plate away from the receiving cavity. The snap-fit ​​and the snap-fit ​​protrusion engage to connect the top plate and the side plate.

[0030] In some embodiments, the side plate has a first limiting groove facing the top plate in a second direction intersecting the first direction;

[0031] The fixed structure also includes:

[0032] The first limiting strip is connected to the top plate. When the top plate is connected to the side plate, the first limiting groove and the first limiting strip engage to limit the movement.

[0033] In some embodiments, the side panel has a second limiting groove facing the top panel in a third direction, the third direction intersecting with the first and second directions;

[0034] The fixed structure also includes:

[0035] The second limiting strip is connected to the top plate. When the top plate is connected to the side plate, the second limiting groove and the second limiting strip engage to limit the movement.

[0036] In some embodiments, the fixing structure further includes:

[0037] The stabilizing component includes a first reinforcing member connected to the top plate. When the bottom plate is connected to the side plate, the first reinforcing member abuts against the side of the side plate facing the receiving cavity.

[0038] Beneficial Effects: This application provides a circuit board fixing structure, comprising: a base plate and a spring-loaded component disposed on the base plate. The spring-loaded component is used to limit and fix the circuit board. The spring-loaded component includes: a connecting part and a limiting part. The connecting part is connected to the base plate and extends along a first direction; the limiting part is connected to the end of the connecting part away from the base plate and extends toward the base plate. There is a gap between the limiting part and the connecting part. The limiting part deforms through the gap and limits and fixes the circuit board under deformation. In this application, there is a gap between the limiting part and the connecting part, and the limiting part deforms through the gap and limits and fixes the circuit board under deformation. This allows the spring-loaded component to achieve the function of limiting and fixing the circuit board, solving the technical problem that the process of fixing the circuit board inside electronic products is relatively cumbersome. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of the fixed circuit board provided in the embodiment of this application;

[0041] Figure 2 A schematic diagram of a fixing structure provided in an embodiment of this application;

[0042] Figure 3 This is a schematic diagram of the structure of the top plate provided in an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the connection between the bottom plate and the top plate provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached drawings: 10-base plate, 11-receiving cavity, 20-spring-loaded fastener component, 21-connecting part, 22-limiting part, 221-first guide surface, 222-first limiting surface, 23-gap, 30-circuit board, 31-first hole, 32-second hole, 40-support component, 41-connecting support part, 411-second limiting surface, 42-extension part, 50-positioning component, 51-positioning element, 52-first support component, 521-third limiting surface, 60-limiting Components, 61-connector, 611-fifth limiting surface, 621-second guide surface, 622-fourth limiting surface, 62-extension, 70-second support, 71-sixth limiting surface, 80-top plate, 81-buckle, 82-limiting component, 83-first limiting stop bar, 84-second limiting stop bar, 90-side plate, 91-buckle protrusion, 92-first limiting groove, 93-second limiting groove, 100-stabilizing component, 101-first reinforcing component, 102-second reinforcing component. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] In the description of this application, it should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the application. Terms such as "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore are not construed as limitations on the application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0047] It should also be noted that in the accompanying drawings of the embodiments of this application, the first direction Z is indicated by a labeled arrow, the second direction X by a labeled arrow, and the third direction Y by a labeled arrow. The description of this application introduces the first direction Z, the second direction X, and the third direction Y to more clearly illustrate the structure and relative positional relationship of each component in the circuit board fixing structure. In practical applications, the first direction Z, the second direction X, and the third direction Y can point to any direction in space. Optionally, the first direction Z, the second direction X, and the third direction Y are perpendicular to each other.

[0048] This application provides a circuit board fixing structure, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0049] As a preamble to the embodiments of this application, with the country's vigorous development of the new energy industry, the development of electric vehicles has become a key focus. Electric vehicles rely on batteries for power, and the batteries determine factors such as the lifespan and safety of the electric vehicle. The battery management system (BMS) is responsible for controlling the overall condition of the battery, and to a certain extent, it determines the safety and stability of the entire vehicle. Currently, the common battery management system casings on the market are generally made of two main materials: plastic and metal. Metal casings commonly use aluminum alloy, which is expensive and prone to scratches, corrosion, and deformation, affecting the sealing, durability, and electrical safety of the battery management system. Plastic casings are generally made of materials such as PBT / PA with a certain proportion of glass fiber. They are less expensive, have high plasticity, are easy to mass-produce using automated methods, and conform to the trend of lightweight battery management systems, making them widely used in the battery management system industry.

[0050] Furthermore, existing battery management systems typically use either bolted or hot-riveted connections to secure the plastic casing and circuit board. Bolted connections are prone to collisions between components and bolts during assembly, and the high cost of metal bolt bushings hinders cost control and the trend towards lightweight products. Hot-riveting requires melting the plastic rivet post at high temperatures to form the rivet head, which can damage the battery management system casing material, especially plastic or composite materials, causing degradation or deformation. Improper hot-riveting methods can also lead to component failure within the battery management system, affecting product quality. Additionally, securing circuit boards in various electronic products usually requires a connection between two casings, making the process of fixing and securing the circuit board inside the electronic product cumbersome.

[0051] In view of this, the limiting part and the connecting part in this application have a gap, and the limiting part deforms through the gap, thereby limiting and fixing the circuit board under deformation. This allows the circuit board to be limited and fixed by the spring-loaded component, solving the technical problem of the cumbersome process of fixing the circuit board inside the electronic product. Furthermore, it reduces the use of metal bushings and bolts, effectively reducing the cost of the battery management system casing, avoiding the collision problem when fixing the circuit board with bolts, and also avoiding the damage to the battery management system casing material that may be caused by the high temperatures of hot riveting connections.

[0052] Please see Figure 1 and Figure 2 As shown, this application embodiment provides a circuit board fixing structure, which includes: a base plate 10 and a spring-loaded fastener 20 disposed on the base plate 10. The spring-loaded fastener 20 is used to limit and fix the circuit board 30. The spring-loaded fastener 20 includes: a connecting part 21, which is connected to the base plate 10 and extends along a first direction Z; and a limiting part 22, which is connected to the end of the connecting part 21 away from the base plate 10 and extends toward the base plate 10. There is a gap 23 between the limiting part 22 and the connecting part 21. The limiting part 22 deforms through the gap 23 and limits and fixes the circuit board 30 under deformation.

[0053] It should be noted that the limiting part 22 deforms through the gap 23, and under this deformation, it limits and fixes the circuit board 30. Specifically, the circuit board 30 moves towards the base plate 10 against the limiting part 22, causing the limiting part 22 to deform through the gap 23, until the circuit board 30 moves beyond the limiting part 22. Then, the limiting part 22 springs back and abuts against the side of the circuit board 30 away from the base plate 10, thus limiting and fixing the circuit board 30. The gap 23 provides sufficient space for the limiting part 22 to deform. This application achieves the function of limiting and fixing the circuit board 30 through the spring-loaded component 20, solving the technical problem of the cumbersome process of fixing the circuit board 30 inside the electronic product. This structure not only simplifies the fixing and limiting process but also effectively limits the circuit board 30, improving the stability and reliability of the electronic product. Furthermore, it should be noted that the relative positions and directions of the various component structures described in this application refer to the relative positions and directions when the base plate 10, top plate 80, and circuit board 30 are connected.

[0054] Please see Figure 1 As shown, in some embodiments, the limiting part 22 has: a first guiding surface 221, which extends away from the connecting part 21 and toward the base plate 10; and a first limiting surface 222, which is connected to the first guiding surface 221 and faces the base plate 10. The circuit board 30 moves against the first guiding surface 221 toward the first limiting surface 222 so that the first limiting surface 222 abuts against the side of the circuit board 30 away from the base plate 10.

[0055] It should be noted that the first guide surface 221 is used to guide the circuit board 30 to move towards the first limiting surface 222. When the circuit board 30 moves towards the first limiting surface 222 by abutting against the first guide surface 221, the limiting part 22 deforms, allowing the circuit board 30 to pass through the limiting part 22 and reach the first limiting surface 222 to abut against the side of the circuit board 30 away from the base plate 10. The first limiting surface 222 serves to limit movement in the first direction Z.

[0056] Please see Figure 1 and Figure 2 As shown, in some embodiments, the fixing structure further includes a support member 40, which includes a connecting support portion 41 connected to the base plate 10 and extending along a first direction Z; an extension portion 42 connected to the end of the connecting support portion 41 away from the base plate 10; the connecting support portion 41 protrudes from the extension portion 42 and has a second limiting surface 411 facing the circuit board 30; the circuit board 30 has a first hole 31 penetrating along the first direction Z; the extension portion 42 passes through the first hole 31 and abuts the second limiting surface 411 against the side of the circuit board 30 near the base plate 10, so that the circuit board 30 is limited and fixed between the first limiting surface 222 and the second limiting surface 411.

[0057] It should be noted that the connecting support part 41, on the one hand, provides the second limiting surface 411 to abut against the side of the circuit board 30 near the base plate 10, thereby limiting it in the opposite direction of the first direction Z. On the other hand, it effectively limits the distance between the circuit board 30 and the base plate 10, so that the circuit board 30 has suitable space. The circuit board 30 is limited and fixed between the first limiting surface 222 and the second limiting surface 411 by the abutment of the first limiting surface 222 and the second limiting surface 411. In addition, there can be multiple support parts 40, and the layout can be adjusted according to the actual situation.

[0058] Please see Figure 2 As shown, in some embodiments, the fixing structure further includes: a positioning component 50, which includes a positioning member 51, which is connected to the base plate 10 and extends along the first direction Z; the circuit board 30 has a second hole 32 that extends along the first direction Z, and when the circuit board 30 is fixed between the first limiting surface 222 and the second limiting surface 411, the positioning member 51 passes through the second hole 32 to limit the circuit board 30.

[0059] It should be noted that while the extension 42 passes through the first hole 31, the positioning member 51 passes through the second hole 32 to limit the circuit board 30. The positioning member 51 and the second hole 32 are interference-fitted to prevent the circuit board from shaking or loosening, making the position of the circuit board 30 in the fixed structure more stable, which is beneficial to limit the circuit board 30 in the second direction X and the third direction Y. In addition, there can be multiple positioning members 50, and the layout can be adjusted according to the actual situation.

[0060] Please see Figure 2 As shown, in some embodiments, the positioning component 50 further includes: a first support member 52, which is connected to the positioning component 51 and the base plate 10 respectively and extends along the first direction Z. The first support member 52 has a third limiting surface 521 facing the circuit board 30, and the third limiting surface 521 and the second limiting surface 411 are on the same plane.

[0061] It should be noted that there can be multiple first support members 52, arranged around the positioning member 51. The purpose of the first support members 52 is to provide more support points, allowing the circuit board 30 to receive more uniform support force during the fixing process. This makes the circuit board 30 more stable in the fixed position, less prone to shaking or loosening, thus effectively improving the reliability and stability of the electronic product. It also ensures that the circuit board 30 receives balanced support force in all directions, avoiding insufficient or uneven support in certain areas. Simultaneously, the surrounding arrangement of the first support members 52 increases the rigidity of the structure, further improving the stability of the circuit board. Furthermore, the third limiting surface 521 and the second limiting surface 411 are on the same plane, making the circuit board's fixing and positioning even more stable.

[0062] Please see Figure 1 and Figure 2 As shown, in some embodiments, the fixing structure further includes: a limiting component 60, which includes: a connector 61, which is connected to the base plate 10 and the connecting support portion 41 respectively and extends along the first direction Z; an extension 62, which is connected to the end of the connector 61 facing away from the base plate 10, the extension 62 having a second guiding surface 621 and a fourth limiting surface 622, the fourth limiting surface 622 facing the extension portion 42 and connected to the second guiding surface 621; the connector 61 protrudes from the extension 62 and has a fifth limiting surface 611 facing the circuit board 30, the fifth limiting surface 611 and the second limiting surface 411 are on the same plane, when the circuit board 30 is limited between the first limiting surface 222 and the second limiting surface 411, the fifth limiting surface 611 and the fourth limiting surface 622 form a limiting step to abut and limit the circuit board 30.

[0063] It should be noted that the second guide surface 621 serves to guide the circuit board 30, guiding the circuit board 30 to move in the direction of the limiting step; after the extension 42 passes through the first hole 31, the fifth limiting surface 611 and the fourth limiting surface 622 form a limiting step to abut and limit the circuit board 30, so that the edge of the circuit board 30 is limited within the limiting step. In some embodiments, the connecting support part 41 is connected to the limiting component 60 in both the second direction X and the third direction Y to limit the circuit board 30 in the second direction X and the third direction Y. For example, if the extension 42 passes through the circuit board 30 near the edge, the edge of the circuit board abuts the fourth limiting surface 622, thus limiting the position of the circuit board 30 on the base plate 10.

[0064] Please see Figure 2As shown, in some embodiments, a second support member 70 is connected to the base plate 10 and extends along the first direction Z. The second support member 70 has a sixth limiting surface 71 facing the circuit board 30, and the sixth limiting surface 71 and the second limiting surface 411 are on the same plane. It should be noted that since the sixth limiting surface 71 and the second limiting surface 411 are on the same plane, there can be multiple second support members 70, and the layout can be adjusted according to the actual situation to provide more support points for the circuit board 30, so that the circuit board can receive a more uniform support force during the fixing process.

[0065] Please see Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the fixing structure further includes: a top plate 80, which is opposite to the bottom plate 10 in the first direction Z; a side plate 90, which is connected to the bottom plate 10 and extends along the first direction Z, and the side plate 90 forms a receiving cavity 11 on the bottom plate 10, the receiving cavity 11 being used to place the circuit board 30; a buckle 81, which is connected to the top plate 80; and a buckle protrusion 91, which is provided on the side of the side plate 90 away from the receiving cavity 11, the buckle 81 and the buckle protrusion 91 engaging to connect the top plate 80 and the side plate 90.

[0066] It should be noted that the side plate 90 forms a receiving cavity 11 on the bottom plate 10, and the buckle 81 engages with the buckle protrusion 91 to connect the top plate 80 and the side plate 90, so that the circuit board 30 can be completely surrounded in the receiving cavity 11, thereby providing better protection and improving the stability and reliability of the circuit board.

[0067] In some embodiments, the support member 40 is positioned near the side plate 90, and the limiting member 60 is connected to the side plate 90. On the one hand, this effectively limits the position of the circuit board 30, and on the other hand, it strengthens the support member 40 and the side plate 90. The second support member 70 is connected to the side plate 90, and the positioning member 50 is positioned near the middle of the bottom plate 10 to provide more support points for the circuit board 30, so that the circuit board can receive more uniform support force during the fixing process.

[0068] Please see Figure 3 and Figure 4 As shown, in some embodiments, the fixing structure further includes: a limiting member 82, which is connected to the top plate 80 and extends in the opposite direction of the first direction Z. With the bottom plate 10 and the side plate 90 connected, the end of the limiting member 82 away from the top plate 80 abuts against the end of the extension 42 away from the connecting support 41 and protrudes from the extension 42.

[0069] It should be noted that the end of the limiting member 82 away from the top plate 80 abuts against and protrudes from the end of the extension 42 away from the connecting support 41. This effectively limits the distance between the circuit board 30 and the top plate 80, and prevents the spring-loaded component from disconnecting, causing damage to the circuit board due to excessive shaking. In addition, the limiting member 82 and the extension 42 correspond one-to-one.

[0070] Please see Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the fixed structure side plate 90 has a first limiting groove 92 facing the top plate 80 on a second direction X intersecting the first direction Z; the fixed structure also includes a first limiting strip 83, which is connected to the top plate 80. When the top plate 80 is connected to the side plate 90, the first limiting groove 92 and the first limiting strip 83 engage to limit the movement.

[0071] In some embodiments, the side plate 90 has a second limiting groove 93 facing the top plate 80 in the third direction Y, and the third direction Y intersects with the first direction Z and the second direction X; the fixing structure further includes: a second limiting strip 84, the second limiting strip 84 is connected to the top plate 80, and when the top plate 80 is connected to the side plate 90, the second limiting groove 93 and the second limiting strip 84 engage to limit the movement.

[0072] It should be noted that the engagement of the first limiting groove 92 with the first limiting stop 83 and the second limiting groove 93 with the second limiting stop 84 serves to limit the connection between the top plate 80 and the side plate 90 in the second direction X and the third direction Y, thereby restricting the relative position of the top plate 80 and the side plate 90. This limiting function can ensure the alignment between the top plate 80 and the side plate 90, prevent them from shifting or shaking, and further improve the stability of the product.

[0073] Please see Figure 2 and Figure 3 As shown, in some embodiments, the fixing structure further includes a stabilizing component 100, which includes a first reinforcing member 101. The first reinforcing member 101 is connected to the top plate 80. When the bottom plate 10 is connected to the side plate 90, the first reinforcing member 101 abuts against the side of the side plate 90 facing the receiving cavity 11.

[0074] It should be noted that the first reinforcing member 101 is the outer contour boss of the top plate 80. The first reinforcing member 101 abuts against the side of the side plate 90 facing the receiving cavity 11. The first reinforcing member 101 serves to prevent the top plate 80 from bending and deforming, and can also act as a baffle to abut against the side of the side plate 90 facing the receiving cavity 11 for protection.

[0075] In some embodiments, the stabilizing member 100 further includes: a plurality of second reinforcing members 102, the plurality of second reinforcing members 102 being connected to the side of the top plate 80 facing the bottom plate 10, the plurality of second reinforcing members 102 being intersectingly disposed on the top plate 80, and / or, the plurality of second reinforcing members 102 being connected to the side of the bottom plate 10 facing the top plate 80, the plurality of second reinforcing members 102 being intersectingly disposed on the bottom plate 10.

[0076] It should be noted that the second reinforcing member 102 is installed on the top plate 80 and the bottom plate 10 to enhance the rigidity and stability of the structure of the top plate 80 and the bottom plate 10, so as to resist the action of external forces and reduce the deformation of the structure. Multiple second reinforcing members 102 are intersectingly arranged on the top plate 80 and the bottom plate 10. These reinforcing members intersect with each other to form a solid support network, so that the top plate 80 and the bottom plate 10 can evenly distribute stress when subjected to external forces, and prevent local damage or instability.

[0077] In some embodiments, the connection process between the base plate 10, the top plate 80, and the circuit board 30 in this application is exemplified as follows:

[0078] First, align the first hole 31 and the second hole 32 of the circuit board 30 with the support member 40 and the positioning member 50 respectively, and press the circuit board 30. The compression of the circuit board 30 causes the limiting part 22 to deform, thereby allowing the circuit board 30 to pass through the limiting part 22. The limiting part 22 rebounds, fixing the circuit board 30 between the first limiting surface 222 and the second limiting surface 411. Then, engage the first limiting groove 92 with the first limiting stop 83, the second limiting groove 93 with the second limiting stop 84, and the buckle 81 with the buckle protrusion 91 to connect the top plate 80 and the side plate 90, thereby achieving the purpose of connecting the bottom plate 10, the top plate 80, and the circuit board 30. This application uses an interference fit to fix and limit the circuit board, preventing the circuit board from shaking. This application utilizes a structure where the spring-loaded component 20 and the supporting component 40 are integrated with the base plate 10. A tooling presses the limiting part 22 to spring back and fix it in place. This, combined with the first limiting surface 222 and the second limiting surface 411, limits and fixes the circuit board 30. The base plate 10 and top plate 80 are then fixed by snap-fit ​​mechanisms. This optimizes the product assembly and connection steps, reduces the use of metal bushings and bolts, effectively lowering product costs. Furthermore, by limiting the circuit board 30 within the housing, the use of screws, metal bushings, and hot riveting machines is reduced, lightening the product weight. Moreover, no additional fixing equipment is required on the production line, further reducing product costs, accelerating the work cycle, and improving production efficiency.

[0079] Accordingly, in some embodiments, a circuit fixing structure can be applied in battery management systems, as well as in other electronic products.

[0080] The circuit fixing structure provided in this application has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A circuit board fixing structure, characterized in that, include: A base plate and a spring-loaded latch component disposed on the base plate, the spring-loaded latch component being used to limit and fix the circuit board, the spring-loaded latch component comprising: The connecting portion is connected to the base plate and extends along the first direction; A limiting part is connected to the end of the connecting part away from the base plate and extends toward the base plate. There is a gap between the limiting part and the connecting part. The limiting part deforms through the gap and limits and fixes the circuit board under the deformation. A support component, comprising: a connecting support portion and an extension portion, the connecting support portion being connected to the base plate and extending along a first direction; the extension portion being connected to one end of the connecting support portion away from the base plate; the connecting support portion protruding from the extension portion and having a second limiting surface facing the circuit board, the circuit board having a first hole penetrating along the first direction, the extension portion passing through the first hole and abutting the second limiting surface against the side of the circuit board near the base plate; A top plate, which is opposite to the bottom plate in a first direction; A limiting member is connected to the top plate and extends in the opposite direction of the first direction. The end of the limiting member away from the top plate abuts against the end of the extension away from the connecting support and protrudes from the extension.

2. The circuit board fixing structure according to claim 1, characterized in that, The limiting part has: A first guide surface extends away from the connecting portion and toward the base plate; A first limiting surface is connected to the first guiding surface and faces the base plate. The circuit board moves against the first guiding surface and toward the first limiting surface so that the first limiting surface abuts against the side of the circuit board away from the base plate.

3. The circuit board fixing structure according to claim 2, characterized in that, The circuit board is fixed between the first limiting surface and the second limiting surface.

4. The circuit board fixing structure according to claim 3, characterized in that, Also includes: A positioning component, the positioning component including a positioning element, the positioning element being connected to the base plate and extending along the first direction; The circuit board has a second hole that extends through the first direction. When the circuit board is fixed between the first limiting surface and the second limiting surface, the positioning member passes through the second hole to limit the circuit board.

5. The circuit board fixing structure according to claim 4, characterized in that, The positioning component further includes: A first support member is connected to the positioning member and the base plate and extends along the first direction. The first support member has a third limiting surface facing the circuit board, and the third limiting surface and the second limiting surface are on the same plane.

6. The circuit board fixing structure according to claim 3, characterized in that, Also includes: The limiting component includes: The connectors are respectively connected to the base plate and the connecting support and extend along the first direction; An extension is connected to the end of the connector facing away from the base plate. The extension has a second guide surface and a fourth limiting surface. The fourth limiting surface faces the extension and is connected to the second guide surface. The connector protrudes from the extension and has a fifth limiting surface facing the circuit board. The fifth limiting surface and the second limiting surface are on the same plane. When the circuit board is limited between the first limiting surface and the second limiting surface, the fifth limiting surface and the fourth limiting surface form a limiting step to abut and limit the circuit board.

7. The circuit board fixing structure according to claim 3, characterized in that, Also includes: A side plate, which is connected to the base plate and extends along a first direction, and the side plate forms a receiving cavity on the base plate for placing the circuit board; The buckle connects to the top plate; A snap-fit ​​protrusion is provided on the side of the side plate away from the receiving cavity. The snap-fit ​​engages with the snap-fit ​​protrusion to connect the top plate to the side plate.

8. The circuit board fixing structure according to claim 7, characterized in that, The side plate has a first limiting groove facing the top plate in a second direction intersecting the first direction; The fixing structure also includes: The first limiting strip is connected to the top plate. When the top plate is connected to the side plate, the first limiting groove engages with the first limiting strip to limit the movement.

9. The circuit board fixing structure according to claim 8, characterized in that, The side plate has a second limiting groove facing the top plate in a third direction, and the third direction intersects with the first direction and the second direction. The fixing structure also includes: The second limiting strip is connected to the top plate. When the top plate is connected to the side plate, the second limiting groove engages with the second limiting strip to limit the movement.

10. The circuit board fixing structure according to claim 7, characterized in that, Also includes: A stabilizing component, the stabilizing component including a first reinforcing member connected to the top plate, wherein when the bottom plate is connected to the side plate, the first reinforcing member abuts against the side plate facing the receiving cavity.

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