Circuit board assembly, battery, electric device and electric equipment

Abstract

The utility model discloses a circuit board assembly, a battery, an electric device and electric equipment, the circuit board assembly comprises a first board body and a second board body, and a first limiting part is formed on the first board body; a second limiting part which is in limiting connection with the first limiting part is formed on the second plate body; wherein the first limiting part and the second limiting part are matched in a limiting manner to limit relative movement between the first plate body and the second plate body. According to the circuit board assembly provided by the utility model, through the limiting cooperation of the first limiting part and the second limiting part, the overall stability and reliability are improved, efficient signal and current transmission is realized, the manufacturing cost is reduced, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit boards, and in particular to a circuit board assembly, a battery, an electrical component and an electrical device. Background Art

[0002] The protective circuit board (PCB) bears the electrical connection between circuit components and keeps the normal operation of the device functions. With the increasing complexity of the functions of electronic products and the continuous improvement of the integration degree, the wiring density and design requirements for the protective circuit board are becoming more and more stringent. To meet these requirements, a multi-layer PCB design is usually adopted to achieve a high-density wiring layout.

[0003] To reduce the cost of the protective circuit board, a design method of dividing the protective circuit board into two monomers is proposed in the related art. One monomer is used for the area with dense wiring, and the required wiring density is achieved by setting a multi-layer PCB; the other monomer is used for the area with non-dense wiring, and a two-layer or one-layer PCB is used to meet the requirements. However, after the monomer in the area with dense wiring and the monomer in the area with non-dense wiring are connected, if the product drops or is turned over during the process, deformation and detachment are likely to occur, resulting in the failure of the electrical connection, thus affecting the quality and reliability of the product. In addition, in order to ensure accurate alignment and stable connection between the two monomers, a fixture needs to be used for limiting, which not only increases the complexity and cost in the manufacturing process, but also brings additional problems such as fixture wear and management. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a circuit board assembly. According to the circuit board assembly of the utility model, through the limiting cooperation between the first limiting part and the second limiting part, the overall stability and reliability are improved, efficient signal and current transmission are realized, the manufacturing cost is reduced, and the production efficiency and product quality are improved.

[0005] The utility model also provides a battery having the above circuit board assembly.

[0006] The utility model also provides an electrical component having the above circuit board assembly.

[0007] The utility model also provides an electrical device having the above electrical component.

[0008] The circuit board assembly according to the utility model includes: a first board body, on which a first limiting part is formed; a second board body, on which a second limiting part for limiting connection with the first limiting part is formed; wherein the first limiting part and the second limiting part are in limiting cooperation to limit the relative movement between the first board body and the second board body.

[0009] According to the circuit board assembly of the present utility model, one of the first board body and the second board body is used for the area with dense wiring, and the other is used for the area with non-dense wiring, so as to achieve a high-density wiring layout, realize the efficient transmission of signals and current, and reduce costs. A first limiting portion is formed on the first board body, and a second limiting portion matching with the first limiting portion is formed on the second board body. When connecting the first board body and the second board body, the first limiting portion and the second limiting portion cooperate with each other and interact to limit the relative movement between the first board body and the second board body, realize the positioning and limiting of the first board body and the second board body, improve the overall stability and reliability of the circuit board assembly, and contribute to improving the stability of the electrical connection between the first board body and the second board body. In addition, by restricting the relative movement of the first board body and the second board body through the cooperation of the first limiting portion and the second limiting portion, the use of fixtures can be reduced, further reducing the complexity and cost in the manufacturing process. At the same time, since the wear and management problems of the fixtures are reduced, the production efficiency and product quality are also improved.

[0010] According to some embodiments of the present utility model, one of the first limiting portion and the second limiting portion is configured as a limiting groove, and the other of the first limiting portion and the second limiting portion is configured as a limiting protrusion embedded in the limiting groove.

[0011] According to some embodiments of the present utility model, the first limiting portion is configured as the limiting groove that is open in the thickness direction of the first board body, the second limiting portion is disposed on the second board body and is configured as a limiting protrusion disposed on the second board body; the limiting protrusion abuts against the inner wall of the limiting groove to limit the movement of the first board body and the second board body in a plane perpendicular to the thickness direction of the first board body.

[0012] According to some embodiments of the present utility model, the depth of the limiting groove is less than the thickness of the first board body or the limiting groove penetrates in the thickness direction of the first board body.

[0013] According to some embodiments of the present utility model, a guiding inclined surface is provided at at least one open end of the limiting groove in the thickness direction of the first board body.

[0014] According to some embodiments of the present utility model, the inner peripheral surface of the limiting groove abuts against the outer peripheral surface of the limiting protrusion and forms a butt joint line, and the butt joint line is configured as a curve, a broken line or a combination of a curve and a broken line.

[0015] According to some embodiments of the present utility model, the limiting protrusion includes: a first extension section, one end of the first extension section is connected to the second plate body and extends away from the second plate body along the length direction of the first plate body; a second extension section, the second extension section is arranged at the free end of the first extension section and the extending direction of the second extension section intersects with the extending direction of the first extension section.

[0016] The limiting groove includes a first groove section and a second groove section that communicate with each other. The first groove section cooperates with the first extension section, and the second groove section cooperates with the second extension section.

[0017] According to some embodiments of the present utility model, at least one side of the second extension section in the width direction protrudes from the first extension section.

[0018] According to some embodiments of the present utility model, the limiting protrusion includes: a first extension section, one end of the first extension section is connected to the second plate body and extends in the length direction of the first plate body; a second extension section, the second extension section is arranged at the free end of the first extension section and is configured as a disc-shaped limiting block or a polygonal limiting block; or

[0019] According to some embodiments of the present utility model, a first positive connection terminal and a first negative connection terminal are arranged on the first plate body, and a second positive connection terminal and a second negative connection terminal are arranged on the second plate body; the circuit board assembly further includes: a first solder pad, the first solder pad is respectively connected to the first positive connection terminal and the second positive connection terminal; a second solder pad, the second solder pad is respectively connected to the first negative connection terminal and the second negative connection terminal; wherein the first solder pad and the second solder pad are insulated from each other.

[0020] According to some embodiments of the present utility model, a plurality of the first positive connection terminals and a plurality of the second positive connection terminals are respectively arranged on the first plate body and the second plate body; a plurality of the first negative connection terminals and a plurality of the second negative connection terminals are respectively arranged on the first plate body and the second plate body; wherein the first solder pad is configured as a plurality corresponding to the plurality of the first positive connection terminals and the plurality of the second positive connection terminals one by one, and the second solder pad is configured as a plurality corresponding to the plurality of the first negative connection terminals and the plurality of the second negative connection terminals one by one.

[0021] According to some embodiments of the utility model, a first pad area is formed on the second plate body, the first pad area is provided with the second positive connection terminal, a second pad area connected to the first pad area is formed on the first plate body, the second pad area is provided with the first positive connection terminal, the first pad area and the second pad area are welded to form the first pad; a third pad area is formed on the limiting protrusion, the third pad area is provided with the second negative connection terminal, a fourth pad area connected to the third pad area is formed on the edge of the limiting groove of the first plate body, the fourth pad area is provided with the first negative connection terminal, the third pad area and the fourth pad area are welded to form the second pad.

[0022] According to some embodiments of the present invention, the circuit board assembly also includes: a first connecting piece, which covers the first solder pad and connects the first board body and the second board body; and a second connecting piece, which covers the second solder pad and connects the first board body and the second board body.

[0023] According to some embodiments of the present invention, the circuit board assembly further includes a conductive adhesive layer, wherein the conductive adhesive layer is disposed between the first connecting piece and the first soldering pad; and / or the conductive adhesive layer is disposed between the second connecting piece and the second soldering pad.

[0024] According to some embodiments of the present invention, the circuit board assembly further includes: an adhesive layer, wherein the adhesive layer is disposed on the first connecting piece and the second connecting piece.

[0025] The battery according to the utility model is briefly described below.

[0026] The battery according to the utility model includes the circuit board assembly described in any one of the above embodiments. Since the battery according to the utility model includes the circuit board assembly described in any one of the above embodiments, the battery according to the utility model realizes efficient transmission of signals and currents by integrating a highly stable circuit board assembly, improves the overall performance and reliability of the battery, and reduces manufacturing costs and improves production efficiency.

[0027] The electrical device according to the present utility model is briefly described below.

[0028] The electrical component according to the present utility model includes the circuit board assembly described in any one of the above embodiments. Since the electrical component according to the present utility model includes the circuit board assembly described in any one of the above embodiments, the electrical component according to the present utility model can operate stably under various working conditions and reduce the manufacturing cost by providing a circuit board assembly with more stable and reliable signal and current transmission. Exemplarily, the electrical component can be, but is not limited to, an electronic controller, a power converter, a motor driver, etc.

[0029] The electrical equipment according to the present utility model will be briefly described below.

[0030] The electrical equipment according to the present utility model includes the electrical component described in any one of the above embodiments. Since the electrical equipment according to the present utility model includes the electrical component described in any one of the above embodiments, the electrical equipment according to the present utility model can operate stably under various working conditions and improve the performance by providing an efficient and stable electrical component. Exemplarily, the electrical equipment can be, but is not limited to, an electric vehicle, a smart home device, an industrial automation device, a portable electronic device, a medical device, etc.

[0031] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0033] Figure 1 is a schematic structural diagram of a circuit board assembly according to an embodiment of the present utility model;

[0034] Figure 2 is an assembly schematic diagram of a circuit board assembly according to an embodiment of the present utility model;

[0035] Figure 3 is a schematic structural diagram of a circuit board assembly according to another embodiment of the present utility model;

[0036] Figure 4 is an assembly schematic diagram of a circuit board assembly according to another embodiment of the present utility model;

[0037] Figure 5 is a schematic structural diagram of a circuit board assembly according to still another embodiment of the present utility model;

[0038] Figure 6 is an assembly schematic diagram of a circuit board assembly according to still another embodiment of the present utility model;

[0039] Figure 7 Schematic diagram of the cooperation of the limiting protrusion and the limiting groove of the circuit board assembly in the thickness direction according to an embodiment of the present utility model;

[0040] Figure 8 Top view of the cooperation of the limiting protrusion and the limiting groove of the circuit board assembly according to an embodiment of the present utility model;

[0041] Figure 9 Schematic diagram of the structure of the circuit board assembly according to another embodiment of the present utility model;

[0042] Figure 10 Assembly schematic diagram of the circuit board assembly according to another embodiment of the present utility model;

[0043] Figure 11 Schematic diagram of the structure of the circuit board assembly according to another embodiment of the present utility model;

[0044] Figure 12 Assembly schematic diagram of the circuit board assembly according to another embodiment of the present utility model;

[0045] Figure 13 Schematic diagram of the structure of the circuit board assembly according to a further embodiment of the present utility model.

[0046] Reference numerals:

[0047] Circuit board assembly 1;

[0048] First plate body 11, limiting groove 111, first groove section 1111, second groove section 1112;

[0049] Second plate body 12, limiting protrusion 121, first extension section 1211, second extension section 1212, guiding inclined surface 122;

[0050] First solder pad 13, first solder pad area 131, second solder pad area 132;

[0051] Second solder pad 14, third solder pad area 141, fourth solder pad area 142;

[0052] First connecting piece 151, second connecting piece 152;

[0053] Bonding layer 16;

[0054] First conductive adhesive layer 171, second conductive adhesive layer 172. Detailed implementation manners

[0055] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0056] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0057] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0058] In order to reduce the cost of protecting a circuit board, a design method of dividing a protection circuit board into two monomers has been proposed in the related art. One monomer is used for the area with dense traces, and the required trace density is achieved by setting multiple layers of PCB; the other monomer is used for the area with non-dense traces, and two or one layer of PCB is used to meet the requirements. However, after the monomer in the area with dense traces and the monomer in the area with non-dense traces are connected, if the product drops or is turned over during the process, it is easy to deform and detach, resulting in the failure of electrical connection, thereby affecting the quality and reliability of the product. In addition, in order to ensure accurate alignment and stable connection between the two monomers, a fixture is also required for limiting, which not only increases the complexity and cost in the manufacturing process, but also brings additional problems of fixture wear and management.

[0059] The following refers to Figures 1 - 13 Describe the circuit board assembly 1 according to an embodiment of the present utility model.

[0060] As Figures 1 - 6 shown, the circuit board assembly 1 according to the present utility model includes a first board body 11 and a second board body 12. A first limiting portion is formed on the first board body 11; a second limiting portion which is in limiting connection with the first limiting portion is formed on the second board body 12; wherein the first limiting portion and the second limiting portion are in limiting cooperation to limit the relative movement between the first board body 11 and the second board body 12.

[0061] For the circuit board assembly 1 according to the present utility model, one of the first board body 11 and the second board body 12 is used for the area with dense wiring, and the other is used for the area with non-dense wiring, so as to achieve a high-density wiring layout, realize the efficient transmission of signals and current, and reduce costs. A first limiting portion is formed on the first board body 11, and a second limiting portion which is matched with the first limiting portion is formed on the second board body 12. When connecting the first board body 11 and the second board body 12, the first limiting portion and the second limiting portion will cooperate with each other and interact to limit the relative movement between the first board body 11 and the second board body 12, realize the positioning and limiting of the first board body 11 and the second board body 12, improve the overall stability and reliability of the circuit board assembly 1, and contribute to improving the stability of the electrical connection between the first board body 11 and the second board body 12. In addition, by limiting the relative movement between the first board body 11 and the second board body 12 through the cooperation of the first limiting portion and the second limiting portion, the use of jigs can be reduced, further reducing the complexity and cost in the manufacturing process. At the same time, since the wear and management problems of the jigs are reduced, the production efficiency and product quality are also improved.

[0062] Therefore, for the circuit board assembly 1 according to the present utility model, through the limiting cooperation of the first limiting portion and the second limiting portion, the overall stability and reliability are improved, the efficient transmission of signals and current is realized, the manufacturing cost is reduced, and the production efficiency and product quality are enhanced.

[0063] It should be noted that the circuit board assembly 1 can be spliced by three or more board bodies with each other. The three or more board bodies are divided into a first board body 11 and a second board body 12. At this time, one first board body 11 can be spliced with multiple second board bodies 12 simultaneously, and / or one second board body 12 can be spliced with multiple first board bodies 11 simultaneously.

[0064] According to some embodiments of the present utility model, such as Figures 1 - 9As shown, one of the first limiting portion and the second limiting portion is configured as a limiting groove 111, and the other of the first limiting portion and the second limiting portion is configured as a limiting protrusion 121 embedded in the limiting groove 111. For example, when the first limiting portion is configured as the limiting groove 111, the second limiting portion is correspondingly configured as the limiting protrusion 121. The shape and size of the limiting protrusion 121 match those of the limiting groove 111, so that the limiting groove 111 can receive and fix the limiting protrusion 121. When connecting the first plate body 11 and the second plate body 12, the limiting protrusion 121 can be embedded in the limiting groove 111 and form a tight fit to restrict the relative movement between the first plate body 11 and the second plate body 12. More specifically, the limiting groove 111 can be a through groove with openings at both ends in the extending direction, or a groove formed on one side surface of the first plate body 11 or the second plate body 12.

[0065] According to some embodiments of the present invention, as Figures 7 - 9 shown, the first limiting portion is configured as a limiting groove 111 that is open in the thickness direction of the first plate body 11, and the second limiting portion is disposed on the second plate body 12 and configured as a limiting protrusion 121 disposed on the second plate body 12; the limiting protrusion 121 abuts against the inner wall of the limiting groove 111 to restrict the movement of the first plate body 11 and the second plate body 12 in a plane perpendicular to the thickness direction of the first plate body 11. The limiting groove 111 is open along the thickness direction of the first plate body 11, so that the first plate body 11 can move relative to the second plate body 12 along its thickness direction to achieve the cooperation between the limiting groove 111 and the limiting protrusion 121. When the first plate body 11 and the second plate body 12 are assembled together, the limiting protrusion 121 of the second plate body 12 will be embedded into the limiting groove 111 of the first plate body 11 and abut against the inner wall of the limiting groove 111, so that a binding force perpendicular to the thickness direction of the first plate body 11 is generated between the limiting protrusion 121 and the limiting groove 111 to restrict the movement of the first plate body 11 and the second plate body 12 in a plane perpendicular to the thickness direction of the first plate body 11.

[0066] According to some embodiments of the present invention, as Figure 7 and Figure 8 shown, the depth of the limiting groove 111 is less than the thickness of the first plate body 11, that is, the limiting groove 111 is a groove formed on one side surface of the first plate body 11. Specifically, the limiting groove 111 is closed at one end in the extending direction, that is, it has an opening at the other end in the extending direction. After the limiting protrusion 121 enters the limiting groove 111 from the opening and moves along the extending direction of the limiting groove 111, it will abut against the wall surface closed at one end of the limiting groove 111, thereby restricting the further movement of the limiting protrusion 121 in the extending direction of the limiting groove 111 and more comprehensively restricting the relative movement between the first plate body 11 and the second plate body 12.

[0067] According to some embodiments of the present invention, as Figures 1 - 6As shown, the limiting groove 111 penetrates through the first plate body 11 in the thickness direction, that is, both ends of the limiting groove 111 in the extending direction have openings. The limiting protrusion 121 can only move along the extending direction of the limiting groove 111 within the limiting groove 111 to restrict the movement of the limiting protrusion 121 in other directions, realizing the stable connection between the first plate body 11 and the second plate body 12.

[0068] According to some embodiments of the present invention, as Figure 7 shown, at least one open end of the limiting groove 111 in the thickness direction of the first plate body 11 is provided with a guiding inclined surface 122. The guiding inclined surface 122 is used to guide the movement of the limiting protrusion 121 when the limiting protrusion 121 is inserted into the limiting groove 111, guiding the limiting protrusion 121 to smoothly slide into the limiting groove 111 along the guiding inclined surface 122, thereby simplifying the installation process and improving the convenience and accuracy of operation.

[0069] According to some embodiments of the present invention, as Figure 7 shown, at least part of the opening of the limiting groove 111 gradually increases towards the open end to form a guiding inclined surface 122 on the inner wall of the limiting groove 111, so that when the limiting protrusion 121 of the second plate body 12 is engaged with the limiting groove 111 of the first plate body 11, the limiting protrusion 121 can smoothly enter the limiting groove 111 along the increasing space provided by the guiding inclined surface 122. When the limiting protrusion 121 contacts the guiding inclined surface 122, due to the inclined characteristic of the guiding inclined surface 122, the limiting protrusion 121 will be guided by the guiding inclined surface 122 and move towards the central direction of the limiting groove 111. As the limiting protrusion 121 goes deeper, the space provided by the guiding inclined surface 122 gradually decreases until the limiting protrusion 121 is completely inserted into the limiting groove 111. Therefore, the guiding inclined surface 122 can provide natural and smooth guidance during the installation process, reducing the operation difficulty.

[0070] According to some embodiments of the present invention, as Figures 1 - 6 shown, the inner peripheral surface of the limiting groove 111 abuts against the outer peripheral surface of the limiting protrusion 121 to form a docking line, and the docking line is configured as a curve, a broken line, or a combination of a curve and a broken line. When the limiting protrusion 121 is inserted into the limiting groove 111, the inner peripheral surface of the limiting groove 111 will closely contact and abut against the outer peripheral surface of the limiting protrusion 121, and a docking line will be formed on the contact surface between them. The configuration of the docking line can have various forms, which can be a smooth curve, a broken line composed of multiple line segments, or a more complex shape composed of a curve and a broken line. Through different configuration forms of the docking line, better contact and restraint effects or specific functional requirements can be achieved.

[0071] According to some embodiments of the present invention, as Figures 1 - 6As shown, the limiting protrusion 121 includes a first extension section 1211 and a second extension section 1212. One end of the first extension section 1211 is connected to the second plate body 12 and extends away from the second plate body 12 along the length direction of the second plate body 12; the second extension section 1212 is arranged at the free end of the first extension section 1211; the limiting groove 111 includes a first groove section 1111 and a second groove section 1112 that communicate with each other. The first groove section 1111 cooperates with the first extension section 1211, and the second groove section 1112 cooperates with the second extension section 1212. The shape and size of the first extension section 1211 match those of the first groove section 1111, so that the first extension section 1211 can be embedded into the first groove section 1111; the shape and size of the second extension section 1212 match those of the second groove section 1112, so that the second extension section 1212 can be embedded into the second groove section 1211. The extending direction of the second extension section 1212 intersects with the extending direction of the first extension section 1211, indicating that the second extension section 1212 and the first extension section 1211 form a certain angle in space. The angle can be determined according to specific design requirements to achieve a specific assembly and limiting effect, so that the cooperation between the limiting protrusion 121 and the limiting groove 111 can limit the movement of the first plate body 11 relative to the second plate body 12 in multiple directions at the same time.

[0072] According to some embodiments of the present invention, as Figures 1 - 4 shown, at least one side of the second extension section 1212 protrudes from the first extension section 1211 in the width direction. Specifically, the second extension section 1212 can be one or more protruding on any one side surface of the first extension section 1211 in the width direction, or the second extension section 1212 can be multiple protruding on both side surfaces of the first extension section 1211 in the width direction, so that when the limiting protrusion 121 is embedded into the limiting groove 111, the second extension section 1212 can form a closer contact with the second groove section 1112 of the limiting groove 111 to achieve more accurate positioning. The multiple second extension sections 1212 can have different shapes and sizes to adapt to different shapes and sizes of the limiting groove 111. For example, the protruding part can be rectangular, arc-shaped or other irregular shapes to meet the requirements of different application scenarios.

[0073] According to some embodiments of the present invention, as Figure 5 and Figure 6As shown, the limiting protrusion 121 includes a first extension section 1211 and a second extension section 1212. One end of the first extension section 1211 is connected to the second plate body 12. The second extension section 1212 is arranged at the free end of the first extension section 1211 and is configured as a disc-shaped limiting block or a polygonal limiting block. The limiting groove 111 includes a first groove section 1111 and a second groove section 1112 that communicate with each other. The first groove section 1111 cooperates with the first extension section 1211, and the second groove section 1112 cooperates with the second extension section 1212. The shape and size of the first extension section 1211 match those of the first groove section 1111, and the shape and size of the second extension section 1212 match those of the second groove section 1112. After the first extension section 1211 cooperates with the first groove section 1111 and the second extension section 1212 cooperates with the second groove section 1112, the relative movement between the first plate body 11 and the second plate body 12 can be restricted more comprehensively. Specifically, the second extension section 1212 is connected to the first plate body 11 through the first extension section 1211. Since the second extension section 1212 is configured as a disc-shaped limiting block or a polygonal limiting block, the second extension section 1212 can provide a stable limiting effect in multiple directions after being embedded in the second groove section 1112. The disc-shaped limiting block has a disc-shaped structure, and the polygonal limiting block has a polygonal structure, which increases the contact area and improves the bonding force between the limiting protrusion 121 and the limiting groove 111, thereby effectively restricting the relative movement between the first plate body 11 and the second plate body 12.

[0074] According to some embodiments of the present invention, the limiting protrusion 121 includes a first extension section 1211. One end of the first extension section 1211 is connected to the second plate body 12 and the first extension section 1211 is configured as a disc-shaped limiting block or a polygonal limiting block. The limiting protrusion 121 is only a disc-shaped limiting block or a polygonal limiting block connected to the second plate body 12, which simplifies the structure of the limiting protrusion 121 while retaining its effective limiting function.

[0075] According to some embodiments of the present utility model, a first positive connection terminal and a first negative connection terminal are provided on the first plate body 11, and a second positive connection terminal and a second negative connection terminal are provided on the second plate body 12; the circuit board assembly further includes a first pad 13 and a second pad 14, and the first pad 13 is respectively connected to the first positive connection terminal and the second positive connection terminal. Through the connection of the first pad 13, the first positive connection terminal and the second positive connection terminal can be connected to form a current transmission path, thereby allowing the positive current to flow between the first plate body 11 and the second plate body 12. The second pad 14 is respectively connected to the first negative connection terminal and the second negative connection terminal; wherein the first pad 13 and the second pad 14 are insulated from each other. Similar to the first pad 13, through the connection of the second pad 14, the first negative connection terminal and the second negative connection terminal can be connected to form a current transmission path, thereby allowing the negative current to flow between the first plate body 11 and the second plate body 12. The first pad 13 and the second pad 14 are used to transfer current to achieve the electrical connection between the first plate body 11 and the second plate body 12. The first pad 13 and the second pad 14 have different polarities to form a closed current transmission path, so that the current can flow along a predetermined path and direction.

[0076] According to some embodiments of the present utility model, a plurality of first positive connection terminals and a plurality of second positive connection terminals are respectively provided on the first plate body 11 and the second plate body 12, and the corresponding connection of the plurality of first positive connection terminals and the plurality of second positive connection terminals can form multiple positive current transmission paths. Similarly, a plurality of first negative connection terminals and a plurality of second negative connection terminals are respectively provided on the first plate body 11 and the second plate body 12, and the corresponding connection of the plurality of first negative connection terminals and the plurality of second negative connection terminals can form multiple negative current transmission paths. The multiple current transmission paths can make the transmission of current between the first plate body 11 and the second plate body 12 more dispersed and balanced.

[0077] The first pad 13 is configured to be multiple corresponding to the plurality of first positive connection terminals and the plurality of second positive connection terminals one by one, and each first pad 13 matches and connects a first positive connection terminal and a second positive connection terminal, thereby establishing multiple positive current transmission paths between the first plate body 11 and the second plate body 12, so that the positive current can flow along a predetermined path. Similarly, the second pad 14 is configured to be multiple corresponding to the plurality of first negative connection terminals and the plurality of second negative connection terminals one by one, and each second pad 14 matches and connects a first negative connection terminal and a second negative connection terminal, thereby establishing multiple negative current transmission paths between the first plate body 11 and the second plate body 12, so that the negative current can flow along a predetermined path.

[0078] According to some embodiments of the present utility model, such as Figures 9 - 13As shown, a first pad area 131 is formed on the second plate body 12, and the first pad area 131 is provided with a second positive connection terminal, and a second pad area 132 connected to the first pad area 131 is formed on the first plate body 11, and the second pad area 132 is provided with a first positive connection terminal. When the first plate body 11 and the second plate body 12 are docked and assembled, the first pad area 131 and the second pad area 132 will be in close contact and connected, thereby forming a first pad 13. The first pad 13 allows current to flow between the first positive connection terminal of the first plate body 11 and the second positive connection terminal of the second plate body 12.

[0079] A third pad area 141 is formed on the limiting protrusion 121, and a second negative electrode connection terminal is provided in the third pad area 141. A fourth pad area 142 is formed on the edge of the limiting groove 111 of the first plate body 11 to connect with the third pad area 141, and a first negative electrode connection terminal is provided in the fourth pad area 142. When the first plate body 11 and the second plate body 12 are connected and assembled, the third pad area 141 and the fourth pad area 142 will be in close contact and connected to form a second pad 14. The second pad 14 allows current to flow between the first negative electrode connection terminal of the first plate body 11 and the second negative electrode connection terminal of the second plate body 12.

[0080] Therefore, when the first board body 11 and the second board body 12 are butted and assembled, electrical connection between them is achieved, which simplifies the assembly process of the circuit board assembly 1 and improves production efficiency.

[0081] It should be noted that the mechanical connection between the first pad area 131 and the second pad area 132 can be achieved by welding or other methods. If the first pad area 131 and the second pad area 132 are welded, the solder may be conductive or non-conductive. The electrical connection between the first pad area 131 and the second pad area 132 can be achieved in a variety of ways. The connection between the third pad area 141 and the fourth pad area 142 is similar.

[0082] According to some embodiments of the present invention, Figure 9 , Figure 10 and Figure 12 As shown, the circuit board assembly 1 also includes a first connecting piece 151, which covers the first pad 13 and connects the first board 11 and the second board 12, which can enhance the connection strength between the first board 11 and the second board 12. And because the first connecting piece 151 covers the first pad 13, the electrical connection between the first board 11 and the second board 12 can be made more stable. The first connecting piece 151 can be conductive or non-conductive. If the first connecting piece 151 is conductive, the first connecting piece 151 can achieve electrical connection between the first pad area 131 and the second pad area 132.

[0083] The circuit board assembly 1 further includes a second connecting piece 152. The second connecting piece 152 covers the second pad 14 and connects the first board body 11 and the second board body 12, which can further enhance the connection strength between the first board body 11 and the second board body 12. And since the second connecting piece 152 covers the second pad 14, the electrical connection between the first board body 11 and the second board body 12 can be made more stable. The first connecting piece 151 may or may not have conductivity. If the second connecting piece 152 has conductivity, the second connecting piece 152 can realize the electrical connection between the third pad area 141 and the fourth pad area 142.

[0084] According to some embodiments of the present invention, the circuit board assembly 1 further includes a conductive adhesive layer, and the conductive adhesive layer is disposed between the first connecting piece 151 and the first pad 13. The conductive adhesive layer can not only provide a stable mechanical connection, making the first connecting piece 151 firmly connected to the first pad 13; at the same time, since the conductive adhesive layer has conductivity, it can also realize the electrical connection between the first pad area 131 and the second pad area 132.

[0085] According to some embodiments of the present invention, the circuit board assembly 1 further includes a conductive adhesive layer, and the conductive adhesive layer is disposed between the second connecting piece 152 and the second pad 14. The conductive adhesive layer can not only provide a stable mechanical connection, making the second connecting piece 152 firmly connected to the second pad 14; at the same time, since the conductive adhesive layer has conductivity, it can also realize the electrical connection between the third pad area 141 and the fourth pad area 142.

[0086] According to some embodiments of the present invention, as Figure 12 shown, the conductive adhesive layer includes a first conductive adhesive layer 171 and a second conductive adhesive layer 172. The first conductive adhesive layer 171 is disposed between the first connecting piece 151 and the first pad 13, and the second conductive adhesive layer 172 is disposed between the second connecting piece 152 and the second pad 14. The first connecting piece 151 is adhesively connected to the first pad 13 through the first conductive adhesive layer 171, which is convenient for installation, and the first conductive adhesive layer 171 has conductivity to conduct electricity between the first pad 13 and the first connecting piece 151. Similarly, the second connecting piece 152 is adhesively connected to the second pad 14 through the second conductive adhesive layer 172, which is convenient for installation, and the second conductive adhesive layer 172 has conductivity to conduct electricity between the second pad 14 and the second connecting piece 152.

[0087] According to some embodiments of the present invention, the circuit board assembly 1 further includes a protective layer, and the protective layer is respectively disposed on the first connecting piece 151 and the second connecting piece 152. When both the first connecting piece 151 and the second connecting piece 152 have conductivity, the protective layer can play a role in isolating electrical contact and preventing short circuits. Exemplarily, the protective layer is a glue layer.

[0088] According to some embodiments of the present utility model, the circuit board assembly 1 further includes an adhesive layer 16, and the adhesive layer 16 is disposed on the first connecting piece 151 and the second connecting piece 152. The adhesive layer 16 can be one that is simultaneously disposed on the first connecting piece 151 and the second connecting piece 152, or the adhesive layer 16 can be multiple ones that are respectively disposed on the first connecting piece 151 and the second connecting piece 152. The adhesive layer 16 is used to enhance the connection strength. Specifically, the adhesive layer 16 can enhance the connection strength between the first connecting piece 151 and the second connecting piece 152 and the corresponding pads respectively, thereby forming a strong connection between the first board body 11 and the second board body 12.

[0089] The battery according to the present utility model will be briefly described below.

[0090] The battery according to the present utility model includes the circuit board assembly 1 in any one of the above embodiments. Since the battery according to the present utility model includes the circuit board assembly 1 in any one of the above embodiments, the battery according to the present utility model realizes efficient transmission of signals and current by integrating the circuit board assembly 1 with high stability, improves the overall performance and reliability of the battery, reduces the manufacturing cost, and improves the production efficiency at the same time.

[0091] The electrical device according to the present utility model will be briefly described below.

[0092] The electrical device according to the present utility model includes the circuit board assembly 1 in any one of the above embodiments. Since the electrical device according to the present utility model includes the circuit board assembly 1 in any one of the above embodiments, the electrical device according to the present utility model, by providing a circuit board assembly 1 with more stable and reliable signal and current transmission, keeps the electrical device running stably under various working conditions and reduces the manufacturing cost. Exemplarily, the electrical device can be, but is not limited to, an electronic controller, a power converter, a motor driver, etc.

[0093] The electrical equipment according to the present utility model will be briefly described below.

[0094] The electrical equipment according to the present utility model includes the electrical device in any one of the above embodiments. Since the electrical equipment according to the present utility model includes the electrical device in any one of the above embodiments, the electrical equipment according to the present utility model realizes stable operation of the electrical equipment under various working conditions and improves the performance by providing an efficient and stable electrical device. Exemplarily, the electrical equipment can be, but is not limited to, an electric vehicle, a smart home system, an industrial automation device, a portable electronic device, a medical device, etc.

[0095] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0096] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A circuit board assembly, characterized in that: include: A first plate body (11), wherein a first limiting portion is formed on the first plate body (11); A second plate body (12), on which a second limiting portion is formed which is limitatively connected to the first limiting portion; wherein The first limiting portion and the second limiting portion cooperate to limit the relative movement between the first plate body (11) and the second plate body (12).

2. The circuit board assembly according to claim 1, characterized in that: One of the first limiting portion and the second limiting portion is configured as a limiting groove (111), and the other of the first limiting portion and the second limiting portion is configured as a limiting protrusion (121) embedded in the limiting groove (111).

3. The circuit board assembly according to claim 2, characterized in that: The first limiting portion is configured as the limiting groove (111) which is open in the thickness direction of the first plate body (11); the second limiting portion is arranged on the second plate body (12) and is configured as a limiting protrusion (121) arranged on the second plate body (12); The limiting protrusion (121) abuts against the inner wall of the limiting groove (111) to limit the movement of the first plate body (11) and the second plate body (12) on a plane perpendicular to the thickness direction of the first plate body (11).

4. The circuit board assembly according to claim 2, characterized in that: The depth of the limiting groove (111) is less than the thickness of the first plate body (11), or the limiting groove (111) penetrates in the thickness direction of the first plate body (11).

5. The circuit board assembly according to claim 2, characterized in that: At least one open end of the limiting groove (111) in the thickness direction of the first plate body (11) is provided with a guiding inclined surface (122).

6. The circuit board assembly according to claim 3, characterized in that: The inner circumferential surface of the limiting groove (111) and the outer circumferential surface of the limiting protrusion (121) abut against each other to form a butt joint line, and the butt joint line is constructed as a curve, a folded line, or a combination of a curve and a folded line.

7. The circuit board assembly according to claim 6, characterized in that: The limiting protrusion (121) comprises: a first extension section (1211), one end of the first extension section (1211) being connected to the second plate body (12) and extending along the length direction of the first plate body (11) in a direction away from the second plate body (12); a second extension section (1212), wherein the second extension section (1212) is arranged at a free end of the first extension section (1211), and an extension direction of the second extension section (1212) intersects with an extension direction of the first extension section (1211); The limiting groove (111) comprises a first groove section (1111) and a second groove section (1112) which are connected to each other, the first groove section (1111) cooperates with the first extension section (1211), and the second groove section (1112) cooperates with the second extension section (1212).

8. The circuit board assembly according to claim 7, characterized in that: At least one side of the second extension section (1212) in the width direction protrudes from the first extension section (1211).

9. The circuit board assembly according to claim 6, characterized in that: The limiting protrusion (121) comprises: A first extension section (1211), one end of the first extension section (1211) being connected to the second plate body (12); A second extension section (1212), wherein the second extension section (1212) is arranged at the free end of the first extension section (1211) and is constructed as a disc-shaped limit block or a polygonal limit block; or The limiting protrusion (121) comprises a first extension section (1211), one end of the first extension section (1211) is connected to the second plate body (12), and the first extension section (1211) is constructed as a disc-shaped limiting block or a polygonal limiting block.

10. The circuit board assembly according to any one of claims 2 to 9, characterized in that: The first plate body (11) is provided with a first positive electrode connection terminal and a first negative electrode connection terminal, and the second plate body (12) is provided with a second positive electrode connection terminal and a second negative electrode connection terminal; The circuit board assembly also includes: A first welding pad (13), the first welding pad (13) being connected to the first positive electrode connection terminal and the second positive electrode connection terminal respectively; A second welding pad (14), wherein the second welding pad (14) is connected to the first negative electrode connection terminal and the second negative electrode connection terminal respectively; The first pad (13) and the second pad (14) are insulated from each other.

11. The circuit board assembly according to claim 10, characterized in that: The first plate body (11) and the second plate body (12) are respectively provided with a plurality of the first positive electrode connection terminals and a plurality of the second positive electrode connection terminals; the first plate body (11) and the second plate body (12) are respectively provided with a plurality of the first negative electrode connection terminals and a plurality of the second negative electrode connection terminals; wherein The first welding pad (13) is configured to correspond one-to-one with the first positive connection terminals and the second positive connection terminals, and the second welding pad (14) is configured to correspond one-to-one with the first negative connection terminals and the second negative connection terminals.

12. The circuit board assembly according to claim 10, characterized in that: A first pad area (131) is formed on the second plate body (12), the first pad area (131) is provided with the second positive electrode connection terminal, the first plate body (11) is formed with a second pad area (132) connected to the first pad area (131), the second pad area (132) is provided with the first positive electrode connection terminal, and the first pad area (131) and the second pad area (132) are welded to form the first pad (13); A third pad area (141) is formed on the limiting protrusion (121), and the third pad area (141) is provided with the second negative electrode connection terminal; a fourth pad area (142) is formed on the edge of the limiting groove (111) of the first plate body (11) and is connected to the third pad area (141), and the fourth pad area (142) is provided with the first negative electrode connection terminal; the third pad area (141) and the fourth pad area (142) are welded to form the second pad (14).

13. The circuit board assembly according to claim 10, characterized in that: Also includes: A first connecting piece (151), the first connecting piece (151) covers the first solder pad (13) and connects the first board body (11) and the second board body (12); A second connecting piece (152), wherein the second connecting piece (152) covers the second solder pad (14) and connects the first board body (11) and the second board body (12).

14. The circuit board assembly according to claim 13, characterized in that: Also includes: A conductive adhesive layer, the conductive adhesive layer being arranged between the first connecting sheet (151) and the first soldering pad (13); And / or the conductive adhesive layer is arranged between the second connecting sheet (152) and the second soldering pad (14).

15. The circuit board assembly according to claim 13, characterized in that: Also includes: An adhesive layer is provided on the first connecting piece (151) and the second connecting piece (152).

16. A battery, characterized in that: A circuit board assembly comprising any one of claims 1-15.

17. An electrical device, characterized in that: A circuit board assembly comprising any one of claims 1-15.

18. An electrical equipment, characterized in that: An electrical device comprising the electrical device of claim 17.

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