Control assembly of battery pack, battery pack and electric device

Abstract

The utility model provides a kind of control assembly of battery pack, battery pack and electric device, the control assembly of battery pack includes: shell, first electrical component, first PCB board, second PCB board and first flexible connecting piece.First electrical component is arranged in shell.First PCB board is arranged in shell with first electrical component spacing.Second PCB board is arranged in shell with first electrical component spacing and is electrically connected with first PCB board.Second PCB board and first PCB board are located the same side of first electrical component.And first PCB board and second PCB board are projected in the projection of preset plane, and the projection of preset plane is perpendicular to the thickness direction of first PCB board.First flexible connecting piece is electrically connected first PCB board and first electrical component.The technical scheme of the application effectively solves the problem that the heat of PCB board in related technology is easy to accumulate, which affects the performance of control assembly.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a control component for a battery pack, a battery pack, and an electrical device. Background Technology

[0002] In the field of new energy vehicles, battery packs, as a crucial component of energy storage and supply, have their performance and reliability become core design considerations. The control components of a battery pack contain complex circuit systems for managing, controlling, and monitoring battery status, and these systems are typically integrated across multiple PCBs.

[0003] The control components of a battery pack in related technologies include a housing, electrical components housed within the housing, and multiple PCBs housed within the housing. Due to the large number of electrical components, PCBs, and related connectors, the current battery pack design often suffers from an unreasonable layout of multiple components. This makes it difficult to effectively dissipate the heat generated by the PCBs during operation, leading to heat accumulation and affecting the lifespan and performance of the control components. Utility Model Content

[0004] The main objective of this invention is to provide a control component for a battery pack, a battery pack, and an electrical device to solve the problem in related technologies where heat easily accumulates on the PCB board, affecting the performance of the control component.

[0005] To achieve the above objectives, according to one aspect of the present invention, a control assembly for a battery pack is provided. The control assembly includes: a housing, a first electrical component, a first PCB board, a second PCB board, and a first flexible connector. The first electrical component is disposed within the housing. The first PCB board is disposed within the housing at a distance from the first electrical component. The second PCB board is disposed within the housing at a distance from the first electrical component and is electrically connected to the first PCB board. The second PCB board and the first PCB board are located on the same side of the first electrical component. Furthermore, the projections of the first PCB board and the second PCB board in a predetermined plane are offset, and the predetermined plane is perpendicular to the thickness direction of the first PCB board. The first flexible connector electrically connects the first PCB board and the first electrical component.

[0006] According to another aspect of the present invention, a battery pack is provided, including a battery pack and a control component, wherein the control component is the control component of the battery pack described above.

[0007] According to another aspect of the present invention, an electrical device is provided, including a battery pack, wherein the battery pack is the aforementioned battery pack.

[0008] By applying the above technical solution, the projections of the first PCB board and the second PCB board are staggered in a preset plane, allowing them to be separated. This enables the first and second PCB boards to dissipate heat independently during operation, reducing heat accumulation and improving the performance and lifespan of the control components. Furthermore, the spacing between the first PCB board and the first electrical component creates a heat dissipation channel, allowing for better heat dissipation and reducing heat accumulation. Similarly, the spacing between the second PCB board and the first electrical component also creates a heat dissipation channel, further enhancing heat dissipation and reducing heat accumulation. Additionally, placing the second PCB board on the same side as the first electrical component facilitates electrical connection between them and reduces manufacturing complexity. The first PCB board and the first electrical component are electrically connected using a first flexible connector. The flexible connector's bendability allows it to adapt to complex layouts and space constraints within the control assembly. It also allows for spacing between the first PCB board and the first electrical component, facilitating heat dissipation and thermal management. Therefore, the technical solution of this application effectively solves the problem of heat accumulation on the PCB board, which affects the performance of the control assembly, in related technologies. Attached Figure Description

[0009] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0010] Figure 1 A perspective structural schematic diagram of an embodiment of the control component of the battery pack according to the present invention is shown;

[0011] Figure 2 It shows Figure 1 A three-dimensional structural diagram of the battery pack control components when the cover is not shown;

[0012] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the second flexible connector when the control components of the battery pack are not shown on the cover;

[0013] Figure 4 It shows Figure 1 A three-dimensional structural diagram of the third flexible connector when the control components of the battery pack are not shown on the cover;

[0014] Figure 5 It shows Figure 1 A three-dimensional structural diagram of the first flexible connector when the control components of the battery pack are not shown on the cover;

[0015] Figure 6 It shows Figure 1 The control components of the battery pack are not shown in a partial side view of the cover.

[0016] The above figures include the following reference numerals:

[0017] 10. Shell; 11. Box; 111. Support column; 12. Cover;

[0018] 20. First PCB board; 21. First surface;

[0019] 30. Second PCB board; 31. Second surface;

[0020] 41. First electrical component; 42. Second electrical component;

[0021] 50. First flexible connector; 51. Wiring layer; 511. First flexible conductor; 52. Second flexible conductor;

[0022] 60. Second flexible connector; 61. First segment; 62. Second segment; 63. Third segment;

[0023] 70. Third flexible connector;

[0024] 80. Preset plane. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0028] like Figures 1 to 4 As shown, in this embodiment, the control components of the battery pack include: a housing 10, a first electrical component 41, a first PCB board 20, a second PCB board 30, and a first flexible connector 50. The first electrical component 41 is disposed within the housing 10. The first PCB board 20 is disposed within the housing 10 at a distance from the first electrical component 41. The second PCB board 30 is disposed within the housing 10 at a distance from the first electrical component 41 and is electrically connected to the first PCB board 20. The second PCB board 30 and the first PCB board 20 are located on the same side of the first electrical component 41. Furthermore, the projections of the first PCB board 20 and the second PCB board 30 on a preset plane 80 are offset, and the preset plane 80 is perpendicular to the thickness direction of the first PCB board 20. The first flexible connector 50 electrically connects the first PCB board 20 and the first electrical component 41.

[0029] By applying the above technical solution, the projections of the first PCB board 20 and the second PCB board 30 within the preset plane 80 are staggered, allowing them to dissipate heat independently during operation. This facilitates heat dissipation, reduces heat accumulation, and improves the performance and lifespan of the control components. Furthermore, the spacing between the first PCB board 20 and the first electrical component 41 creates a heat dissipation channel, enabling better heat dissipation and reducing heat accumulation. Similarly, the spacing between the second PCB board 30 and the first electrical component 41 also creates a heat dissipation channel, further enhancing heat dissipation and reducing heat accumulation. Additionally, placing the second PCB board 30 on the same side as the first PCB board 20 facilitates electrical connection between them and reduces manufacturing complexity. The first flexible connector 50 electrically connects the first PCB board 20 and the first electrical component 41. The flexible connector 50's bendability allows it to adapt to complex layouts and space constraints within the control assembly. It also allows for spacing between the first PCB board 20 and the first electrical component 41, facilitating heat dissipation and thermal management. Therefore, the technical solution of this application effectively solves the problem of heat accumulation on the PCB board, which affects the performance of the control assembly, in related technologies.

[0030] In some embodiments, the preset plane 80 is the surface of the first PCB board 20 where the pads are provided. Alternatively, the preset plane 80 is a plane parallel to the surface of the first PCB board 20 where the pads are provided. Alternatively, the preset plane 80 is the surface of the second PCB board 30 where the pads are provided. Alternatively, the preset plane 80 is a plane parallel to the surface of the second PCB board 30 where the pads are provided.

[0031] Furthermore, the arrangement of the first PCB board 20 and the second PCB board 30 reduces costs compared to using a single, larger PCB board. Moreover, the first PCB board 20 and the second PCB board 30 can each integrate different functions, and the different functional circuits on the first PCB board 20 and the second PCB board 30 simplify the circuit layout, reduce interference between different circuits, and further reduce manufacturing costs.

[0032] like Figures 1 to 4As shown, the first PCB board 20 has a first surface 21 facing away from the first electrical component 41, and the second PCB board 30 has a second surface 31 facing away from the first electrical component 41. The first surface 21 and the second surface 31 are coplanar. By making the first surface 21 and the second surface 31 coplanar, the first PCB board 20 and the second PCB board 30 can be electrically connected on the same plane, making the electrical connection more direct and simple, and reducing interference and delay during signal transmission. Furthermore, the coplanar arrangement of the first surface 21 and the second surface 31 can better utilize the vertical space inside the housing 10, avoiding the space waste caused by misalignment in the vertical direction, and improving space utilization.

[0033] Specifically, the first surface 21 of the first PCB board 20 is a plane used to set the pads. The second surface 31 of the second PCB board 30 is a plane used to set the pads.

[0034] like Figures 2 to 4 as well as Figure 6 As shown, a first PCB board 20 and a first electrical component 41 are stacked together, and a first heat dissipation gap L1 is provided between the first PCB board 20 and the first electrical component 41. The first heat dissipation gap L1 satisfies: 3mm ≤ L1 ≤ 50mm. By limiting the first heat dissipation gap L1, the control component can ensure the heat dissipation distance between the first PCB board 20 and the first electrical component 41 while maintaining a compact structure, so as to facilitate effective heat dissipation, promote rapid heat conduction and diffusion, and avoid local overheating. A second PCB board 30 and the first electrical component 41 are stacked together, and a second heat dissipation gap L2 is provided between the second PCB board 30 and the first electrical component 41, so as to facilitate effective heat dissipation, promote rapid heat conduction and diffusion, and avoid local overheating.

[0035] It should be noted that the first heat dissipation distance L1 between the first PCB board 20 and the first electrical component 41 refers to the minimum distance between the surface of the first PCB board 20 and the surface of the first electrical component 41. The second heat dissipation distance L2 between the second PCB board 30 and the first electrical component 41 refers to the minimum distance between the surface of the second PCB board 30 and the surface of the first electrical component 41.

[0036] Preferably, the first heat dissipation spacing L1 is 3mm, 5mm, 7mm, 10mm, 13mm, 15mm, 17mm, 20mm, 23mm, 25mm, 27mm, 30mm, 33mm, 35mm, 37mm, 40mm, 43mm, 45mm, 47mm, or 50mm.

[0037] Preferably, the second heat dissipation spacing L2 is 3mm, 5mm, 7mm, 10mm, 13mm, 15mm, 17mm, 20mm, 23mm, 25mm, 27mm, 30mm, 33mm, 35mm, 37mm, 40mm, 43mm, 45mm, 47mm, or 50mm.

[0038] In other embodiments, a first PCB board and a first electrical component are stacked together, and a first heat dissipation gap L1 is provided between the first PCB board and the first electrical component, wherein the first heat dissipation gap L1 satisfies: 3mm ≤ L1 ≤ 50mm. Alternatively, a second PCB board and a first electrical component are stacked together, and a second heat dissipation gap L2 is provided between the second PCB board and the first electrical component, wherein the second heat dissipation gap L2 satisfies: 3mm ≤ L2 ≤ 50mm.

[0039] like Figures 2 to 5 As shown, there are multiple first electrical components 41, and the first flexible connector 50 includes multiple first flexible conductors 511. The multiple first electrical components 41 and the multiple first flexible conductors 511 are arranged in a one-to-one correspondence, and the multiple first flexible conductors 511 form a wiring layer 51. The wiring layer 51 can arrange the multiple first flexible conductors 511 together in an orderly manner, reducing the crossing and confusion between the multiple first flexible conductors 511, making the electrical connection between the first electrical components 41 and the first PCB board 20 more convenient and efficient.

[0040] like Figures 2 to 5As shown, the control components of the battery pack also include a second electrical component 42 spaced apart from the first electrical component 41 within the housing 10. The first flexible connector 50 also electrically connects the first PCB board 20 and the second electrical component 42. The first flexible connector 50 also includes a second flexible wire 52, with its first end electrically connected to the first PCB board 20 and its second end electrically connected to the second electrical component 42. The first end of the second flexible wire 52 is located within the wiring layer 51, and there is a preset distance between the second end of the second flexible wire 52 and the wiring layer 51. In this way, the first flexible connector 50 can not only connect the first PCB board 20 and the first electrical component 41, but also connect to the second electrical component 42 within the housing 10. The preset distance between the second end of the second flexible wire 52 and the wiring layer 51 allows the first electrical component 41 and the second electrical component 42 to have different heights, increasing the layout flexibility of the first flexible connector 50 and improving the freedom of planning the layout of the first electrical component 41 and the second electrical component 42. By bending the second flexible conductor 52, the preset distance between the second end of the second flexible conductor 52 and the wiring layer 51 can be adjusted, which facilitates the electrical connection with the second electrical component 42.

[0041] Furthermore, the electrical components within the control assembly often vary in height due to their different functions. By setting a preset distance between the second end of the second flexible conductor 52 and the wiring layer 51, it is possible to flexibly adapt to electrical components of different heights, eliminating the need to customize dedicated connectors for each electrical component and simplifying the design and manufacturing process.

[0042] In some embodiments, the first flexible connector 50 further includes a metal connecting piece or a nickel sheet disposed on the second end of the second flexible conductor 52, and the second flexible conductor 52 is electrically connected to the second electrical component 42 through the metal connecting piece or the nickel sheet. When the electrical connection points are not on the same plane and have a height difference, there is no need to design special nickel sheets; all nickel sheets of the same shape can be used, and the second flexible conductor 52 can be bent to adapt to electrical connection points of different heights and positions.

[0043] In some embodiments, the second electrical component 42 is disposed on one side of the first electrical component 41. The second electrical component 42 is disposed on one side of the first PCB board 20 and on one side of the second PCB board 30.

[0044] like Figures 2 to 4As shown, the control assembly of the battery pack also includes a second flexible connector 60, which electrically connects the first PCB board 20 and the first flexible connector 50. The second flexible connector 60 simplifies the connection complexity between the first PCB board 20 and the first flexible connector 50, reducing processing and assembly difficulties. Simultaneously, when the control assembly is subjected to external vibration, the use of the second flexible connector 60 increases the reliability of the connection between the first PCB board 20 and the first flexible connector 50, reducing the possibility of electrical connection breakage due to changes in the relative position of the first PCB board 20 and the first flexible connector 50 caused by vibration.

[0045] like Figures 2 to 4 As shown, the first flexible connector 50 is disposed between the first electrical component 41 and the first PCB board 20, and a heat dissipation gap exists between the first flexible connector 50 and the first PCB board 20. This heat dissipation gap facilitates heat dissipation from the first PCB board 20, enabling it to maintain a suitable operating temperature and extending its service life. Simultaneously, the use of the second flexible connector 60 allows the first PCB board 20 and the first flexible connector 50 to be spaced apart, facilitating electrical connection when they are spaced apart.

[0046] like Figure 3 and Figure 4 As shown, the second flexible connector 60 includes a first segment 61, a second segment 62, and a third segment 63 connected sequentially. The first segment 61 and the third segment 63 are stacked and spaced apart. The first segment 61 is electrically connected to the first PCB board 20, and the third segment 63 is electrically connected to the first electrical component 41. The arrangement of the first segment 61, the second segment 62, and the third segment 63 of the second flexible connector 60 optimizes the path of electrical signals, reducing delay and loss during transmission. Furthermore, the second flexible connector 60 has a simple structure and is easy and reliable to connect.

[0047] Furthermore, a first arc-shaped transition section is provided between the first segment 61 and the second segment 62, and a second arc-shaped transition section is provided between the second segment 62 and the third segment 63.

[0048] like Figure 1 , Figure 2 as well as Figures 4 to 6As shown, the housing 10 includes a box body 11 and a cover 12 covering the box body 11. At least a portion of the first electrical component 41 is disposed within the box body 11. A support post 111 is provided on the box body 11, with the end of the support post 111 protruding from the surface of the first electrical component 41. A first PCB board 20 is connected to the end of the support post 111. By supporting the first PCB board 20 with the support post 111 on the box body 11, it is not only convenient to install the first PCB board 20, but also convenient to set a first heat dissipation gap between the first PCB board 20 and the first electrical component 41. Furthermore, the provision of the support post 111 improves the mechanical stability of the first PCB board 20, avoids abnormal electrical contact caused by vibration, and improves the reliability of the control components.

[0049] like Figure 2 , Figure 4 as well as Figure 6 As shown, the first electrical component 41 includes a relay and a fuse. The relay and fuse provide multiple protection mechanisms for the operation of the control assembly. The relay controls the switching on and off of the circuit. The fuse prevents excessive current in the circuit, thereby protecting the battery, circuit, and related equipment from damage. The battery pack control assembly also includes a third flexible connector 70, which electrically connects the first PCB board 20 and the second PCB board 30. The addition of the third flexible connector 70 further improves the electrical connection between the first PCB board 20 and the second PCB board 30, enhancing the reliability and flexibility of the circuit. Simultaneously, when the control assembly is subjected to external vibration, the use of the third flexible connector 70 increases the reliability of the connection between the first PCB board 20 and the second PCB board 30, reducing the possibility of electrical connection breakage due to changes in the relative position of the first PCB board 20 and the second PCB board 30 caused by vibration.

[0050] In other embodiments, the first electrical component includes a relay and a fuse. Alternatively, the control assembly of the battery pack may further include a third flexible connector electrically connecting the first PCB board and the second PCB board.

[0051] In some embodiments, the first flexible connector 50, the second flexible connector 60, and the third flexible connector 70 are preferably flexible flat cables. Flexible flat cables have good flexibility; their branches can be bent arbitrarily to connect with electrical components, resulting in more flexible arrangement and lower cost. A flexible flat cable comprises multiple parallel metal conductors embedded in an insulating material. In other embodiments, the second flexible connector 60 and the third flexible connector 70 are preferably flexible printed circuit boards, which are printed circuit boards made with flexible copper-clad laminate as a substrate.

[0052] In some embodiments, the third flexible connector 70 is welded to the first PCB board 20, and the third flexible connector 70 is welded to the second PCB board 30.

[0053] In some embodiments, the control components of the battery pack are BDU (Battery Energy Distribution Unit, Battery Pack Circuit Breaker) or BMS (Battery Management System Unit). The inventors have discovered that control components in related technologies include electrical components and a PCB board, which are directly connected by wire harnesses. However, wire harnesses are susceptible to temperature differences, aging, and occupy a large space, making it impossible to reduce the overall size of the control components. Compared to related technologies, the scheme using a first flexible connector 50 in the above embodiments allows for greater flexibility as both the wiring layer 51 of the first flexible connector 50 and the second flexible conductor 52 can be bent, eliminating the requirement that almost all electrical component connection points be on the same plane. Furthermore, the connection method between the first flexible connector 50 and the electrical components can be varied, including metal sheet welding and terminal plugging.

[0054] In some embodiments, the first PCB board 20 is a high-voltage board, and the second PCB board 30 is a low-voltage board. The high-voltage board integrates information acquisition circuits and electrical component control circuits. It integrates signal acquisition circuits for circuits such as the main positive circuit, main negative circuit, pre-charging circuit, and heating circuit, as well as control circuits for the electrical components in these circuits. The former acquires electrical signals such as voltage and current signals from these circuits, while the latter outputs control signals for electrical components such as relays, fuses, and shunts in these circuits. The low-voltage board integrates a central control circuit for the control information acquisition circuit and the electrical component control circuit. The central control circuit receives electrical signals from various circuits uploaded by the information acquisition circuit and can output signal data and control signals for the electrical components in each circuit.

[0055] This application also provides a battery pack, which includes a battery assembly and a control component, wherein the control component is the same as the one described above. Because the aforementioned control component can solve the problem of heat buildup on the PCB board in related technologies, affecting the performance of the control component, the battery pack with this control component can solve the same technical problem.

[0056] This application also provides an electrical device including a battery pack, which is the aforementioned battery pack. Because the aforementioned battery pack can solve the problem in related technologies where heat easily accumulates on the PCB board, affecting the performance of control components, the electrical device having this battery pack can solve the same technical problem.

[0057] The following description is provided to enable those skilled in the art to fully understand this application and is not intended to limit the subject matter of the claims.

[0058] The battery in this application is a secondary battery, also known as a rechargeable battery or storage battery, which refers to a battery that can be used again after being discharged by recharging to activate the active materials.

[0059] Typically, a secondary battery includes an electrode assembly, an electrolyte, and an outer casing. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The electrode assembly and electrolyte are assembled inside the outer casing. During charging and discharging, active ions (such as lithium ions) move back and forth between the positive and negative electrodes, inserting and extracting. The separator, positioned between the positive and negative electrodes, primarily prevents short circuits while allowing active ions to pass through. The electrolyte, located between the positive and negative electrodes, mainly serves to conduct active ions.

[0060] As an example, the preparation process of a secondary battery is as follows: the positive electrode, separator, and negative electrode are stacked in sequence, with the separator acting as a separator between the positive and negative electrodes. Then, the electrodes are wound or stacked to obtain an electrode assembly. The electrode assembly is placed in an outer packaging shell, dried, and then injected with electrolyte. After vacuum sealing, settling, formation, and shaping, a secondary battery is obtained.

[0061] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0062] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0063] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A control component for a battery pack, characterized in that, include: Shell (10); The first electrical component (41) is disposed inside the housing (10); The first PCB board (20) is disposed within the housing (10) at a distance from the first electrical component (41); The second PCB board (30) is disposed in the housing (10) at a distance from the first electrical component (41) and is electrically connected to the first PCB board (20). The second PCB board (30) and the first PCB board (20) are located on the same side of the first electrical component (41), and the projections of the first PCB board (20) and the second PCB board (30) in a preset plane (80) are misaligned. The preset plane (80) is perpendicular to the thickness direction of the first PCB board (20). The first flexible connector (50) electrically connects the first PCB board (20) and the first electrical component (41).

2. The control component for the battery pack according to claim 1, characterized in that, The first PCB board (20) has a first surface (21) facing away from the first electrical component (41), and the second PCB board (30) has a second surface (31) facing away from the first electrical component (41). The first surface (21) and the second surface (31) are coplanar.

3. The control component for the battery pack according to claim 1, characterized in that, The first PCB board (20) and the first electrical component (41) are stacked together, and a first heat dissipation gap L1 is provided between the first PCB board (20) and the first electrical component (41), wherein the first heat dissipation gap L1 satisfies: 3mm≤L1≤50mm; and / or, The second PCB board (30) is stacked with the first electrical component (41), and there is a second heat dissipation gap L2 between the second PCB board (30) and the first electrical component (41). The second heat dissipation gap L2 satisfies: 3mm≤L2≤50mm.

4. The control component for the battery pack according to claim 1, characterized in that, There are multiple first electrical components (41), and the first flexible connector (50) includes multiple first flexible conductors (511). The multiple first electrical components (41) are arranged in a one-to-one correspondence with the multiple first flexible conductors (511), and the multiple first flexible conductors (511) form a wiring layer (51).

5. The control component for the battery pack according to claim 4, characterized in that, The control components of the battery pack also include a second electrical component (42) disposed at a distance from the first electrical component (41) within the housing (10), and the first flexible connector (50) is also electrically connected to the first PCB board (20) and the second electrical component (42); The first flexible connector (50) further includes a second flexible conductor (52), the first end of the second flexible conductor (52) is electrically connected to the first PCB board (20), the second end of the second flexible conductor (52) is electrically connected to the second electrical component (42), the first end of the second flexible conductor (52) is located in the wiring layer (51), and there is a preset distance between the second end of the second flexible conductor (52) and the wiring layer (51).

6. The control component for the battery pack according to claim 1, characterized in that, The control component of the battery pack also includes a second flexible connector (60), which is electrically connected to the first PCB board (20) and the first flexible connector (50).

7. The control component for the battery pack according to claim 6, characterized in that, The first flexible connector (50) is disposed between the first electrical component (41) and the first PCB board (20), and there is a heat dissipation gap between the first flexible connector (50) and the first PCB board (20).

8. The control component for the battery pack according to claim 7, characterized in that, The second flexible connector (60) includes a first segment (61), a second segment (62) and a third segment (63) connected in sequence. The first segment (61) and the third segment (63) are stacked and spaced apart. The first segment (61) is electrically connected to the first PCB board (20), and the third segment (63) is electrically connected to the first electrical component (41).

9. The control component for the battery pack according to claim 1, characterized in that, The housing (10) includes a box body (11) and a cover (12) covering the box body (11). At least a portion of the first electrical component (41) is disposed inside the box body (11). A support column (111) is provided on the box body (11), and the end of the support column (111) protrudes from the surface of the first electrical component (41). The first PCB board (20) is connected to the end of the support column (111).

10. The control component for the battery pack according to claim 1, characterized in that, The first electrical component (41) includes a relay and a fuse, and / or the control assembly of the battery pack also includes a third flexible connector (70) that is electrically connected to the first PCB board (20) and the second PCB board (30).

11. A battery pack, comprising a battery assembly and a control component, characterized in that, The control component is the control component of the battery pack according to any one of claims 1 to 10.

12. An electrical device comprising a battery pack, characterized in that, The battery pack is the battery pack described in claim 11.

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