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 a limiting part arranged on the bottom plate, the limiting part is used for limiting the circuit board and comprises a positioning part, an elastic part and a limiting part, and the positioning part is connected with the bottom plate and extends in the first direction; the elastic part is connected with one end, away from the bottom plate, of the positioning part, and one end, away from the positioning part, of the elastic part is provided with a notch penetrating in the first direction; the limiting part is connected with the end, away from the positioning part, of the elastic part and provided with a gap communicating with the notch. The limiting part deforms through the gap and penetrates through the circuit board under deformation so as to limit the circuit board. According to the circuit board fixing structure, the limiting component can deform through the notch and the gap and penetrates through the circuit board under deformation so as to limit the circuit board, the circuit board fixing structure is convenient and fast to use, and the technical problem that the limiting and fixing process of fixing the circuit board in an electronic product is tedious is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of circuit board assembly, and particularly relates to a circuit board fixing structure. BACKGROUND

[0002] With the rapid development of various electronic products at present, circuit boards are widely used in various electronic products, and most of the circuit boards are fixed in the internal structure of the electronic products through bolt connection limiting or hot riveting connection limiting. In this process, the process of fixing the circuit board in the internal limiting fixation of the electronic product is relatively cumbersome. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the application provides a circuit board fixing structure, which solves the technical problem that the process of fixing the circuit board in the internal limiting fixation of the electronic product is relatively cumbersome.

[0004] The application provides a circuit board fixing structure, and the fixing structure comprises:

[0005] a bottom plate and a limiting component arranged on the bottom plate, the limiting component being used for limiting the circuit board, and the limiting component comprising:

[0006] a positioning portion connected with the bottom plate and extending along a first direction;

[0007] an elastic portion connected with one end of the positioning portion away from the bottom plate, one end of the elastic portion away from the positioning portion being provided with a slot penetrating along the first direction;

[0008] a limiting portion connected with one end of the elastic portion away from the positioning portion, the limiting portion being provided with a gap in communication with the slot; the limiting portion is deformed through the gap and passes through the circuit board under the deformation to limit the circuit board.

[0009] In some embodiments, the elastic portion comprises a plurality of elastic members arranged at intervals, and the slot is formed between the plurality of elastic members;

[0010] the limiting portion comprises a plurality of chamfer members, the gap is formed between the plurality of chamfer members, and the chamfer members are connected with the elastic members one by one; the chamfer members protrude from the elastic members and are provided with a first limiting surface facing the bottom plate;

[0011] the circuit board is provided with a first hole penetrating along the first direction, and the limiting portion limits the circuit board between the first limiting surface and the positioning portion by passing through the first hole.

[0012] In some embodiments, the positioning portion comprises a first connecting member and a supporting member, the first connecting member and the supporting member are connected, the first connecting member and the supporting member are both connected with the bottom plate and extend along the first direction, one end of the first connecting member away from the bottom plate is connected with the elastic portion, the supporting member is provided with a second limiting surface facing the first limiting surface, and the limiting portion limits the circuit board between the first limiting surface and the second limiting surface by passing through the first hole.

[0013] In some embodiments, the number of the supports is multiple, and the multiple supports are arranged around the first connecting member.

[0014] In some embodiments, the fixing component further comprises:

[0015] The limiting post is connected with the bottom plate and extends along the first direction, and the circuit board further has a second hole hole penetrating along the first direction; when the limiting part penetrates through the circuit board, the limiting post penetrates through the second hole hole to limit the circuit board.

[0016] In some embodiments, the fixing component further comprises:

[0017] The top plate is opposite to the bottom plate along the first direction;

[0018] The clamping component comprises:

[0019] The second connecting member is connected with the top plate and extends along the opposite direction of the first direction, and an end of the second connecting member away from the top plate has a recess towards the bottom plate;

[0020] The extending member is connected with the second connecting member in the recess, and the extending member has a third limiting surface towards the top plate,

[0021] The limiting part is clamped into the recess through the first hole hole, the first limiting surface abuts against the third limiting surface to connect the bottom plate with the top plate, and the end of the second connecting member away from the top plate abuts against the surface of the circuit board away from the bottom plate to limit and fix the circuit board between the second connecting member and the limiting part.

[0022] In some embodiments, the fixing component further comprises:

[0023] The side plate is connected with the bottom plate and extends along the first direction, and the side plate surrounds a containing cavity on the bottom plate, the containing cavity is used for placing the circuit board, and the side plate has a first limiting groove towards the top plate along a second direction intersecting the first direction;

[0024] The first limiting stopper is connected with the top plate, and when the bottom plate is connected with the top plate, the first limiting groove is clamped and matched with the first limiting stopper for limiting.

[0025] In some embodiments, the side plate has a second limiting groove towards the top plate along a third direction, and the third direction intersects the first direction and the second direction;

[0026] The fixing structure further comprises:

[0027] The second limiting stopper is connected with the top plate, and when the bottom plate is connected with the top plate, the second limiting groove is clamped and matched with the second limiting stopper for limiting.

[0028] In some embodiments, the fixing component further comprises:

[0029] The stabilizing component includes a first reinforcing member connected to the top plate, and the first reinforcing member abuts against one side of the side plate facing the accommodating cavity when the bottom plate is connected to the top plate.

[0030] In some embodiments, the stabilizing component further includes a plurality of second reinforcing members connected to one side of the top plate facing the bottom plate, and the plurality of second reinforcing members are intersectingly arranged on the top plate.

[0031] Beneficial effects: the application provides a circuit board fixing structure, which includes a bottom plate and a limiting component arranged on the bottom plate, and the limiting component is used for limiting the circuit board. The limiting component includes a positioning part, an elastic part and a limiting part. The positioning part is connected to the bottom plate and extends along a first direction. The elastic part is connected to one end of the positioning part away from the bottom plate. One end of the elastic part away from the positioning part has a slot penetrating along the first direction. The limiting part is connected to one end of the elastic part away from the positioning part. The limiting part has a gap in communication with the slot. The limiting part deforms through the gap and passes through the circuit board under the deformation to limit the circuit board. The slot and the gap enable the limiting component to deform and pass through the circuit board under the deformation to limit the circuit board, thereby providing a convenient and fast circuit board fixing structure and solving the technical problem that the process of fixing the circuit board in the electronic product is relatively complicated. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0033] Figure 1 A structural schematic diagram of a circuit board fixing structure provided by the embodiment of the application;

[0034] Figure 2 A structural schematic diagram of a circuit board fixing structure provided by the embodiment of the application;

[0035] Figure 3 A structural schematic diagram of a limiting component provided by the embodiment of the application;

[0036] Figure 4 A structural schematic diagram of a top plate provided by the embodiment of the application;

[0037] Figure 5 A structural schematic diagram of a top plate connected to a bottom plate provided by the embodiment of the application;

[0038] Explanation of reference signs:

[0039] 10 - base plate, 20 - limiting component, 21 - positioning part, 211 - first connecting piece, 212 - supporting piece, 2121 - second limiting surface, 22 - elastic part, 221 - notch, 222 - elastic piece, 23 - limiting part, 231 - chamfer piece, 2311 - first limiting surface, 232 - gap, 30 - circuit board, 31 - first hole, 32 - second hole, 40 - limiting column, 50 - top plate, 60 - clamping component, 61 - second connecting piece, 611 - groove, 621 - third limiting surface, 62 - extending piece, 70 - side plate, 71 - first limiting groove, 72 - second limiting groove, 73 - accommodating cavity, 80 - first limiting baffle, 90 - second limiting baffle, 100 - stabilizing component, 101 - first reinforcing piece, 102 - second reinforcing piece. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. The orientations or positional relationships indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and are not understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not understood as limiting the present application. In addition, the terms "first", "second" are only used for description purposes, and are not understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features.

[0042] It should also be noted that in the drawings of the embodiments of the present application, the first direction Z is indicated by the arrows marked, the second direction Y is indicated by the arrows marked, and the third direction X is indicated by the arrows marked. The description of the present application introduces the first direction Z, the second direction Y and the third direction X in order to more clearly describe the structure and relative positional relationship of each component in the circuit board fixing structure. In actual application, the first direction Z, the second direction Y and the third direction X can point to any direction in space. As an option, the first direction Z, the second direction Y and the third direction X are perpendicular to each other.

[0043] The application provides a circuit board fixing structure, which is described in detail below. It should be noted that the sequence of the following embodiments is not limited as the preferred sequence of the embodiments of the application. Moreover, the description of each embodiment in the following embodiments has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0044] As a preamble of the embodiments of the application, with the vigorous development of new energy industry in China, the development of electric vehicles has become a development focus. Electric vehicles rely on batteries for power supply, and the batteries determine the service life and safety of electric vehicles. The battery management system is responsible for the overall control of the battery, and to some extent, the battery management system determines the safety and stability of the vehicle. At present, the common battery management system shell on the market generally includes two categories of plastic materials and metal materials, and the commonly used material of the metal shell is aluminum alloy. The shell has a high cost, and the surface is prone to scratches, corrosion, deformation and other problems, which can affect the sealing, durability and electrical safety of the battery management system. The plastic shell generally uses PBT / PA and a certain proportion of glass fiber, which has a low cost, strong plasticity, is easy to mass-produce automatically and meets the lightweight development trend of the battery management system, and is widely used in the battery management system industry.

[0045] In addition, the fixing and limiting method of the plastic shell of the existing battery management system and the circuit board is generally bolt connection fixing and limiting or hot riveting connection fixing and limiting. The bolt connection circuit board fixing and limiting structure is prone to the situation that the components on the circuit board collide with the bolt during assembly, and the metal bolt bushing has a high cost, which is not conducive to the control of the shell cost and the development of the lightweight trend of the product. The hot riveting connection needs to use high temperature to melt the plastic rivet column and form a rivet head. High temperature can cause damage to the battery management system shell material, especially for plastic or composite material shell, which can cause material degradation or deformation. Moreover, improper hot riveting connection can cause the failure of components in the battery management system, affecting the product quality. In addition, the upper and lower shells of the existing battery management system plastic shell are often connected and fixed by buckles. This fixing method is prone to buckle fracture during assembly, which can cause connection failure.

[0046] In view of the above, the application provides a circuit board fixing structure, which comprises a bottom plate and a limiting component arranged on the bottom plate, and the limiting component is used for limiting the circuit board. The limiting component can be deformed through the gap and the notch, and passes through the circuit board under deformation to limit the circuit board. The application provides a convenient and fast circuit board fixing structure, solves the technical problem that the process of fixing the circuit board in the internal structure of the electronic product is relatively complicated, reduces the use of metal bushings and bolts, effectively reduces the cost of the battery management system shell, avoids the problem of the bolt fixing the circuit board, and avoids the damage of high temperature riveting connection to the battery management system shell material.

[0047] As shown in Figure 1 , Figure 2 and Figure 3 , the application provides a circuit board fixing structure, which comprises a bottom plate 10 and a limiting component 20 arranged on the bottom plate 10, and the limiting component 20 is used for limiting the circuit board 30. The limiting component 20 comprises a positioning portion 21 connected with the bottom plate 10 and extending along a first direction Z; an elastic portion 22 connected with one end of the positioning portion 21 away from the bottom plate 10, and the elastic portion 22 has a notch 221 penetrating along the first direction Z at one end away from the positioning portion 21; a limiting portion 23 connected with one end of the elastic portion 22 away from the positioning portion 21, and the limiting portion 23 has a gap 232 communicating with the notch 221; and the limiting portion 23 is deformed through the gap 232, and passes through the circuit board 30 under deformation to limit the circuit board 30.

[0048] It should be noted that the limiting component 20 provides sufficient space based on the gap 232 and the notch 221, so that the elastic portion 22 and the limiting portion 23 can be deformed, and then the limiting portion 23 passes through the circuit board 30 under deformation to limit the circuit board 30. The application provides a convenient and fast circuit board 30 fixing structure, solves the technical problem that the process of fixing the circuit board 30 in the internal structure of the electronic product is relatively complicated, and makes the circuit board 30 be easily fixed in the internal structure of the electronic product.

[0049] As shown in Figure 3 , in some embodiments, the elastic portion 22 comprises a plurality of elastic members 222 arranged at intervals, and the notch 221 is formed between the plurality of elastic members 222; the limiting portion 23 comprises a plurality of chamfer members 231, and the gap 232 is formed between the plurality of chamfer members 231, and the chamfer member 231 is connected with the elastic member 222 one by one; the chamfer member 231 protrudes from the elastic member 222 and has a first limiting surface 2311 facing the bottom plate 10; the circuit board 30 has a first hole 31 penetrating along the first direction Z, and the limiting portion 23 passes through the first hole 31 to limit the circuit board 30 between the first limiting surface 2311 and the positioning portion 21.

[0050] It should be noted that the plurality of chamfering pieces 231 converge inward away from the one end of the elastic part 22, facilitating the plurality of chamfering pieces 231 to pass through the first hole 31. During the process that the limiting part 23 passes through the first hole 31, the plurality of chamfering pieces 231 are deformed and contracted in the direction of the gap 232 under the extrusion of the first hole 31. After the limiting part 23 passes through the first hole 31, the plurality of chamfering pieces 231 spring back to the original state, limiting the circuit board 30 between the first limiting surface 2311 and the positioning part 21. The first limiting surface 2311 plays a limiting role on the circuit board 30 in the first direction Z, and the positioning part 21 plays a limiting role in the opposite direction of the first direction Z, so that the circuit board 30 has a suitable space.

[0051] Please refer to Figure 3 As shown in the drawings, in some embodiments, the positioning part 21 includes a first connecting piece 211 and a supporting piece 212. The first connecting piece 211 and the supporting piece 212 are connected, and both are connected with the bottom plate 10 and extend along the first direction Z. The one end of the first connecting piece 211 away from the bottom plate 10 is connected with the elastic part 22. The supporting piece 212 has a second limiting surface 2121 facing the first limiting surface 2311. The limiting part 23 limits the circuit board 30 between the first limiting surface 2311 and the second limiting surface 2121 by passing through the first hole 31.

[0052] It should be noted that the first limiting surface 2311 and the second limiting surface 2121 have a distance for limiting the circuit board 30. The second limiting surface 2121 plays a limiting role in the opposite direction of the first direction Z, so that the circuit board 30 is limited and fixed between the first limiting surface 2311 and the second limiting surface 2121, thereby avoiding falling off of the circuit board 30 and effectively limiting the distance between the circuit board 30 and the bottom plate 10.

[0053] Please refer to Figure 1 As shown in the drawings, in some embodiments, the number of the supporting pieces 212 is a plurality, and the plurality of supporting pieces 212 are arranged around the first connecting piece 211.

[0054] It should be noted that the support 212 is arranged to increase the contact area between the circuit board 30 and the positioning part 21, thereby providing more support points, so that the circuit board can be more uniformly supported during fixing. In this way, the circuit board 30 is more stable in the fixing limit and is not easy to shake or loosen, thereby effectively improving the reliability and stability of the electronic product. By arranging multiple supports 212 around the first connecting piece 211, the circuit board 30 can be supported in all directions. This design enables the circuit board 30 to be balanced in all directions, avoiding the situation of insufficient or uneven local support. At the same time, the surrounding arrangement of the support 212 can also increase the rigidity of the structure, further improving the stability of the circuit board. In addition, the number of limiting parts 20 can be multiple, which can be adjusted according to the actual situation, and the limiting part 20 can be integrally injection molded with the bottom plate 10.

[0055] Please refer to Figure 1 and Figure 2 In some embodiments, the fixing part further comprises a limiting column 40 connected with the bottom plate 10 and extending along the first direction Z, and the circuit board 30 further has a second hole 32 penetrating along the first direction Z; when the limiting part 23 passes through the first hole 31, the limiting column 40 passes through the second hole 32 to limit the circuit board 30.

[0056] It should be noted that when the limiting part 23 passes through the first hole 31, the limiting column 40 passes through the second hole 32 to limit the circuit board 30; in addition, the second hole 32 can be oval, and the corresponding limiting column 40 passing through the second hole 32 is also oval in cross section, and the limiting column 40 and the second hole 32 are interference fit to prevent the circuit board from shaking or loosening, so that the position of the circuit board 30 in the fixing structure is more stable, which is conducive to limiting the circuit board 30 in the second direction Y and the third direction X. The number of limiting columns 40 can be multiple, which can be adjusted according to the actual situation.

[0057] Please refer to Figure 3 , Figure 4 and Figure 5As shown in some embodiments, the fixing component further comprises: a top plate 50 opposite to the bottom plate 10 in the first direction Z; a clamping component 60 comprising: a second connecting piece 61 connected with the top plate 50 and extending in the opposite direction of the first direction Z, the second connecting piece 61 having a groove 611 facing the bottom plate 10 at the end away from the top plate 50; an extension piece 62 connected with the second connecting piece 61 in the groove 611, the extension piece 62 having a third limiting surface 621 facing the top plate 50, the limiting portion 23 is clamped into the groove 611 through the first hole 31, and the first limiting surface 2311 abuts against the third limiting surface 621 to connect the bottom plate 10 with the top plate 50, and the end of the second connecting piece 61 away from the top plate 50 abuts against the side away from the bottom plate 10 of the circuit board 30 to limit and fix the circuit board 30 between the second connecting piece 61 and the positioning portion 21.

[0058] It should be noted that the limiting component 20 is clamped into the groove 611 through the first hole 31 by the limiting portion 23, realizing a three-in-one connection, and the bottom plate 10 and the top plate 50 and the circuit board 30 can be connected through the limiting component 20, and the circuit board 30 is limited and fixed by abutting against the circuit board 30 through the clamping component 60 and the positioning portion 21. In addition, the second connecting piece 61 of the clamping component 60 effectively limits the distance between the circuit board and the top plate. In addition, through the three-in-one connection, the bottom plate 10 and the top plate 50 and the circuit board 30 are connected, the assembly process is optimized, the assembly steps are reduced, the production rhythm of the product assembly process is improved, and the production efficiency is improved. Moreover, the use of buckles is avoided, the problem of easy breakage of buckles is solved, and the structural strength is improved.

[0059] Please refer to Figure 1 and Figure 4 As shown in some embodiments, the fixing component further comprises: a side plate 70 connected with the bottom plate 10 and extending in the first direction Z, the side plate 70 surrounds a containing cavity 73 on the bottom plate 10, the containing cavity 73 is used for placing the circuit board 30, and the side plate 70 has a first limiting groove 71 facing the top plate 50 in a second direction Y intersecting the first direction Z; a first limiting stop 80 connected with the top plate 50, the first limiting groove 71 and the first limiting stop 80 are clamped and matched to limit when the bottom plate 10 and the top plate 50 are connected.

[0060] It should be noted that the side plate 70 surrounds the containing cavity 73 on the bottom plate 10, and the circuit board 30 can be completely surrounded in the containing cavity 73, thereby providing better protection and improving the stability and reliability of the circuit board. The first limiting groove 71 and the first limiting bar 80 are in clamping cooperation, thereby limiting the relative position of the bottom plate 10 and the top plate 50 in the third direction X, which can ensure the alignment between the bottom plate 10 and the top plate 50 and prevent them from being displaced or shaken in the third direction X, thereby further improving the stability of the product. The first limiting groove 71 and the first limiting bar 80 can be multiple, and the layout can be adjusted according to the actual situation. The first limiting groove 71 and the first limiting bar 80 are in one-to-one clamping cooperation.

[0061] As shown in Figure 1 and Figure 4 , in some embodiments, the side plate 70 has a second limiting groove 72 in the third direction X facing the top plate 50, and the third direction X intersects with the first direction Z and the second direction Y. The fixing structure further comprises a second limiting bar 90, and the second limiting bar 90 is connected with the top plate 50. When the bottom plate 10 is connected with the top plate 50, the second limiting groove 72 and the second limiting bar 90 are in clamping cooperation.

[0062] It should be noted that the second limiting groove 72 and the second limiting bar 90 are in clamping cooperation, thereby limiting the relative position of the bottom plate 10 and the top plate 50 in the second direction Y, which can ensure the alignment between the bottom plate 10 and the top plate 50 and prevent them from being displaced or shaken in the second direction Y, thereby further improving the stability of the product. The second limiting groove 72 and the second limiting bar 90 can be multiple, and the layout can be adjusted according to the actual situation. The first limiting groove 71 and the first limiting bar 80 are in one-to-one clamping cooperation.

[0063] As shown in Figure 4 , in some embodiments, the fixing component further comprises a stabilizing component 100, and the stabilizing component 100 comprises a first reinforcing piece 101. The first reinforcing piece 101 is connected with the top plate 50, and when the bottom plate 10 is connected with the top plate 50, the first reinforcing piece 101 abuts against one side of the side plate 70 facing the containing cavity 73.

[0064] It should be noted that the first reinforcing piece 101 is an outer contour boss of the top plate 50, and the first reinforcing piece 101 abuts against one side of the side plate 70 facing the containing cavity 73. The first reinforcing piece 101 can prevent the top plate 50 from being bent and deformed, and can also serve as a bar abutting against one side of the side plate 70 facing the containing cavity 73 to provide protection.

[0065] As shown in Figure 4As shown, in some embodiments, the stabilizing component 100 further comprises: a plurality of second reinforcing members 102 connected to the side of the top plate 50 facing the bottom plate 10, and intersecting arranged on the top plate 50. It should be noted that the second reinforcing member 102 is a reinforcing rib arranged on the side of the top plate 50 facing the bottom plate 10, which is designed to enhance the rigidity and stability of the structure of the top plate 50 to resist external forces and reduce structural deformation; the plurality of second reinforcing members 102 are intersectingly arranged on the top plate 50, and these reinforcing members intersect with each other to form a solid support network, so that the top plate 50 can uniformly disperse stress when subjected to external forces and prevent local damage or instability.

[0066] In some embodiments, the process of connecting the bottom plate 10, the top plate 50 and the circuit board 30 in the present application is as follows:

[0067] First, align the first hole 31 and the second hole 32 of the circuit board 30 with the limiting component 20 and the limiting column 40 respectively, press the circuit board 30 so that the limiting part 23 passes through the first hole 31 under deformation, and the limiting column 40 passes through the second hole 32, so that the circuit board 30 is limited by the second limiting surface; then, align the first limiting stop 80 and the second limiting stop 90 on the top plate 50 with the first limiting groove 71 and the second limiting groove 72 on the side plate 70 respectively, press the top plate 50, and the limiting part 23 is clamped into the recess 611 under deformation, so that the first limiting surface 2311 abuts against the third limiting surface 621, achieving the purpose of clamping the limiting part 23 with the clamping component 60. At this time, the end of the second connecting piece 61 away from the top plate 50 abuts against the end of the circuit board 30 away from the bottom plate 10, achieving the purpose of limiting and fixing the circuit board 30, and connecting the top plate 50 with the bottom plate 10, achieving the connection of the bottom plate 10, the top plate 50 and the circuit board 30. The present application fixes and limits the circuit board through interference fit to prevent the circuit board from shaking. The present application uses a plastic limiting component 20 to press and connect the bottom plate 10, the top plate 50 and the circuit board at one time through tooling, optimizes the assembly and connection steps of the product, reduces the use of metal bushings and bolts, effectively reduces the cost of the product, optimizes the assembly process, reduces the fixing steps of the circuit board, improves the production rhythm of the product assembly process, and improves the production efficiency.

[0068] Correspondingly, in some embodiments, a circuit fixing structure can be applied to a battery management system and other electronic products.

[0069] The circuit board fixing structure provided by the application is described in detail above, and the principle and implementation mode of the application are described by applying specific examples; the above description of the examples is only used to help understand the method of the application and its core idea; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation mode and application range will be changed, and the above description of the specification should not be understood as a limitation on the application.

Claims

1. A circuit board fixing structure characterized by comprising: The circuit board fixing structure comprises: a bottom plate and a limiting component arranged on the bottom plate, the limiting component being used for limiting a circuit board, the limiting component comprising: a positioning part connected with the bottom plate and extending along a first direction; an elastic part connected with an end of the positioning part away from the bottom plate, the elastic part having a notch penetrating along the first direction at an end thereof away from the positioning part; a limiting part connected with an end of the elastic part away from the positioning part, the limiting part having a gap in communication with the notch; the limiting part is deformed through the gap and penetrates through the circuit board under the deformation to limit the circuit board.

2. The circuit board fixing structure according to claim 1, wherein: the elastic part comprises a plurality of elastic members arranged at intervals, the plurality of elastic members forming the notch therebetween; the limiting part comprises a plurality of chamfer members, the plurality of chamfer members forming the gap therebetween, the chamfer members being connected with the elastic members one by one; the chamfer members protrude from the elastic members and have first limiting faces towards the bottom plate; the circuit board has a first hole penetrating along the first direction, the limiting part penetrating through the first hole to limit the circuit board between the first limiting faces of the chamfer members and the positioning part.

3. The circuit board fixing structure according to claim 2, wherein: the positioning part comprises a first connecting member and a supporting member, the first connecting member and the supporting member being connected, the first connecting member and the supporting member both being connected with the bottom plate and extending along the first direction, an end of the first connecting member away from the bottom plate being connected with the elastic part, the supporting member having second limiting faces towards the first limiting faces, the limiting part penetrating through the first hole to limit the circuit board between the first limiting faces and the second limiting faces.

4. The circuit board fixing structure according to claim 3, wherein: the number of the supporting members is plural, the plural supporting members being arranged around the first connecting member.

5. The circuit board fixing structure according to claim 1, characterized by The circuit board fixing structure further comprises: a limiting post connected with the bottom plate and extending along the first direction, the circuit board further having a second hole penetrating along the first direction; when the limiting part penetrates through the circuit board, the limiting post penetrates through the second hole to limit the circuit board.

6. The circuit board fixing structure according to claim 2, characterized by The circuit board fixing structure further comprises: a top plate opposite to the bottom plate in the first direction; a clamping component comprising: a second connecting member connected with the top plate and extending along the opposite direction of the first direction, an end of the second connecting member away from the top plate having a recess towards the bottom plate; an extending member connected with the second connecting member in the recess, the extending member having third limiting faces towards the top plate, the limiting part penetrating through the first hole and clamping into the recess, the first limiting faces abutting against the third limiting faces to connect the bottom plate with the top plate, an end of the second connecting member away from the top plate abutting against a surface of the circuit board away from the bottom plate to limit and fix the circuit board between the second connecting member and the positioning part.

7. The circuit board fixing structure according to claim 6, characterized by The circuit board fixing structure further comprises: A side plate connected with the bottom plate and extending in a first direction, the side plate surrounding a receiving cavity on the bottom plate for placing the circuit board, the side plate having a first limiting groove toward the top plate in a second direction intersecting the first direction; A first limiting stop connected with the top plate, the first limiting groove and the first limiting stop being engaged and limited when the bottom plate is connected with the top plate.

8. The circuit board fixing structure according to claim 7, wherein: The side plate has a second limiting groove toward the top plate in a third direction intersecting the first direction and the second direction; The fixing structure further comprises: A second limiting stop connected with the top plate, the second limiting groove and the second limiting stop being engaged and limited when the bottom plate is connected with the top plate.

9. The circuit board fixing structure according to claim 7, characterized by Further comprising: A stabilizing component comprising a first reinforcing member connected with the top plate, the first reinforcing member abutting against a side of the side plate facing the receiving cavity when the bottom plate is connected with the top plate.

10. The circuit board fixing structure according to claim 9, wherein: The stabilizing component further comprises: a plurality of second reinforcing members connected with a side of the top plate facing the bottom plate, the plurality of second reinforcing members being arranged on the top plate in an intersecting manner.

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