Low-voltage power supply control assembly

Abstract

The utility model provides a low voltage power control assembly, including casing and battery assembly, casing includes two parts of box and base, the bottom surface of box is provided with opening, and is connected the opening of box through base seal, battery assembly is installed in the box through the first fixed plate and the second fixed plate of opposite arrangement both sides, and the first fixed plate and the second fixed plate are respectively located the two side walls of opposite sides of box, and with the top side of casing is connected, and the electric core of battery assembly is transversely arranged between the first fixed plate and the second fixed plate, and the heat conduction plate is still provided on battery assembly. The utility model constructs closed loop framework through the vertical connection of first fixed plate and second fixed plate in casing, and the reinforced structure is formed among the transverse arrangement of electric core. BMS and BDU are divided and are placed in the containing space formed by fixed plate and side wall, and the bending connection of aluminum base plate BDU and casing base improves the heat dissipation efficiency. Under the same volume, the impact resistance and heat dissipation efficiency are improved, and the space efficiency and reliability balance of low voltage power are realized.

Description

Technical Field

[0001] This utility model relates to the field of battery pack structure technology, and in particular to a low-voltage power supply control component. Background Technology

[0002] Vehicle low-voltage power supply systems (such as 12V or 24V low-voltage batteries) have gradually shifted from traditional lead-acid batteries to lithium-ion batteries. However, traditional vehicle low-voltage power supply designs have inherent defects in terms of structure, thermal management, and system integration, which restricts their development and application.

[0003] In terms of structural layout, components such as battery cells, battery management system (BMS), and battery disconnection unit (BDU) are usually distributed or simply stacked and connected by wiring harnesses. This not only occupies vertical space, resulting in a large power assembly that contradicts the compact layout requirements of vehicles, but also increases connection impedance, failure rate, and assembly cost due to the use of a large number of wiring harnesses.

[0004] In terms of thermal management, with the application of solid-state BDUs, such as using semiconductor devices like MOSFETs to replace traditional mechanical relays, a significant amount of Joule heat is generated during operation. Insufficient heat dissipation will lead to excessively high junction temperatures in the MOSFETs, causing performance degradation or even damage. Existing solutions mostly use natural air cooling or simple thermal conductive adhesive, which has low heat dissipation efficiency and is difficult to meet their heat dissipation requirements.

[0005] Meanwhile, if the heat generated by the battery cell under fast charging or high load conditions cannot be dissipated in time, it will affect its lifespan and safety performance. Traditional solutions lack efficient and uniform cell-level heat dissipation methods and usually rely on environmental cooling of the power supply assembly, which has limited effectiveness.

[0006] Therefore, there is an urgent need for a highly integrated, compact, and heat-efficient automotive low-voltage power supply solution. It needs to optimize the structure, integrate the BMS and BDU modules to reduce size; design efficient active cooling for the high-heat-generating solid-state BDU module; and design effective active cooling schemes for the battery cells to ensure temperature uniformity and safety of the battery assembly. Utility Model Content

[0007] This utility model provides a low-voltage power supply control component to solve the technical problems of defects in the structure, thermal management and system integration of traditional vehicle low-voltage power supply design schemes.

[0008] This utility model provides a low-voltage power supply control component, including a housing and a battery assembly. The housing includes a box and a base. The bottom surface of the box has an opening, which is sealed and connected to the opening of the box by the base. The battery assembly is installed in the box through a first fixing plate and a second fixing plate arranged opposite to each other on both sides. The first fixing plate and the second fixing plate are respectively located on the opposite side walls of the box and connected to the top side of the box. The battery cell of the battery assembly is horizontally placed between the first fixing plate and the second fixing plate. A connecting post is also installed between the first fixing plate and the second fixing plate. A heat-conducting plate is also provided on the battery assembly.

[0009] In one embodiment of the present invention, a first accommodating space and a second accommodating space are formed between the first fixing plate and the second fixing plate and the side wall of the housing, respectively, and a BMS module and a BDU module are respectively installed in the first accommodating space and the second accommodating space.

[0010] In one embodiment of the present invention, a heat-conducting plate is also installed in the second accommodating space, and the heat-conducting plate is in contact with the heating element of the BDU module.

[0011] In one embodiment of this utility model, the heat-conducting plate also contacts the base of the housing.

[0012] In one embodiment of this utility model, a plurality of heat-conducting plates are installed in the second accommodating space.

[0013] In one embodiment of this utility model, the heat-conducting plate is connected between the BDU module and the base of the housing by bending.

[0014] In one embodiment of this utility model, the heat-conducting plate and the base of the shell are aluminum substrates.

[0015] In one embodiment of this utility model, the connecting post connects the first fixing plate and the second fixing plate along the gap between multiple battery cells.

[0016] In one embodiment of this utility model, a supporting foam is provided between the upper and lower sides of the battery cell and the housing.

[0017] In one embodiment of this utility model, the battery cell is a cylindrical battery cell, with the positive and negative terminals of the battery cell facing the first fixing plate and the second fixing plate, respectively.

[0018] The beneficial effects of this utility model are as follows: This utility model proposes a low-voltage power supply control component. A closed-loop frame is constructed by vertically connecting a first fixing plate and a second fixing plate within the housing, with the battery cells arranged laterally to form a reinforcing structure. The BMS and BDU are respectively placed in the receiving space formed by the fixing plate and the side wall. The aluminum substrate is bent to connect the BDU to the housing base, improving heat dissipation efficiency. This achieves improved impact resistance and heat dissipation efficiency within the same volume, realizing a balance between space efficiency and reliability in low-voltage power supplies. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the structure of a low-voltage power supply provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a low-voltage power supply housing in a separated state according to one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a solid-state BDU module in one embodiment of the present invention;

[0024] Figure 4 yes Figure 3 A schematic diagram of the structure with the heat-conducting plate separated from the solid-state BDU module and the base;

[0025] Figure 5 This is a schematic diagram of the structure of the fixing plate and connecting column of the low-voltage power supply in one embodiment of the present invention.

[0026] The attached figures are labeled as follows:

[0027] 100. Housing; 110. Box; 120. Base; 200. Battery assembly; 210. Battery cell; 220. First fixing plate; 221. First receiving space; 230. Second fixing plate; 231. Second receiving space; 240. Connecting post; 300. BMS module; 400. BDU module; 410. Heat-conducting plate; 610. Electrical port; 700. Terminal post; 800. Supporting foam. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0030] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0031] Please see Figures 1 to 5 , Figure 1 and Figure 2 A low-voltage power supply control component provided in one embodiment of the present invention includes a housing 100 and a battery assembly 200. The housing 100 includes a box body 110 and a base 120. The bottom surface of the box body 110 has an opening, which is sealed to the opening of the box body 110 by the base 120. The battery assembly 200 is installed in the box body 110 by a first fixing plate 220 and a second fixing plate 230 arranged opposite to each other on both sides. The first fixing plate 220 and the second fixing plate 230 are respectively located on the opposite side walls of the box body 110 and connected to the top side of the box body 110. The battery cell 210 of the battery assembly 200 is horizontally placed between the first fixing plate 220 and the second fixing plate 230. A connecting post 240 is also installed between the first fixing plate 220 and the second fixing plate 230. A heat-conducting plate 410 is also provided on the battery assembly 200.

[0032] Specifically, in this embodiment of the present invention, the housing 100 may include two parts: a box 110 and a base 120. An opening is provided on the bottom surface of the box 110, and the opening of the box 110 is sealed and connected by the base 120 to complete the assembly of the battery assembly 200. On the top of the housing 100, i.e., on one side of the top surface of the box 110, the terminal post 700 and the electrical port 610 of the battery assembly 200 are arranged adjacent to each other. The internal space of the housing 100 is divided by a pair of oppositely arranged fixing plates. The first fixing plate 220 and the second fixing plate 230 may be located at positions corresponding to the two side walls of the housing 100, for example, perpendicular to the bottom and top surfaces of the housing 100. The first fixing plate 220 and the second fixing plate 230 may be connected to the top of the housing 100, i.e., the top surface of the box 110, to form a support frame for the battery assembly 200 (see reference). Figures 3 to 5In this design, the top ends of the two fixing plates can be connected to the upper part of the housing 100 (i.e., the top surface of the box 110) via studs. This allows the two fixing plates to become extension components of the housing 100 structure, making the battery assembly 200 and the housing 100 form an integral structure and improving structural stability. By using the two fixing plates to hoist and secure the battery assembly 200 inside the housing 100, when the base 120 is assembled into the bottom opening of the box 110, there is no need to consider potential interference or positioning errors between it and the battery assembly 200.

[0033] Furthermore, by employing a horizontal arrangement, the battery cells 210 in the battery assembly 200 are installed between two fixing plates. Compared to the vertical arrangement, this changes the size requirements of the housing 100. The horizontal arrangement of the battery cells 210 fully utilizes the space in the length or width direction of the housing 100, allowing the array of battery cells 210 to extend parallel to the sidewalls of the housing 100. This layout effectively reduces the overall height dimension of the power supply, providing installation convenience in height-constrained areas such as vehicle chassis. Moreover, the vertical relationship between the two fixing plates and the battery cells 210 forms a direct load transfer path. When external vibrations are transmitted to the housing 100, the vibration energy is evenly distributed throughout the entire array of battery cells 210 through the fixing plates, avoiding structural damage caused by stress concentration in localized battery cells 210. Simultaneously, the large contact area between the battery cells 210 and the fixing plates naturally forms a heat dissipation channel. The heat generated by the battery cells 210 during operation can be conducted along the fixing plates to the sidewalls of the housing 100, achieving passive temperature control using the heat capacity of the metal housing 100. The heat dissipation effect can also be enhanced by the heat-conducting plate 410.

[0034] Thus, by connecting the first fixing plate 220 and the second fixing plate 230 to the housing 100, the fixing plates serve as a structural skeleton to strengthen the rigidity of the battery assembly 200 and the housing 100, reducing the need for independent brackets. Furthermore, the horizontal arrangement of the battery cells 210 compresses the vertical space occupied by the power supply, adapting to flat installation scenarios. The connection between the battery cells 210 and the fixing plates forms a physical protective layer, suppressing displacement of the battery cells 210 under vehicle vibration conditions. The overall design achieves a balance between space efficiency and structural reliability through minimalist mechanical interfaces, enhancing the applicability of low-voltage power supply deployment in limited spaces.

[0035] Please see the appendix Figure 2 In one embodiment, a first accommodating space 221 and a second accommodating space 231 are formed between the first fixing plate 220 and the second fixing plate 230 and the side wall of the housing 100, respectively. The first accommodating space 221 and the second accommodating space 231 are respectively equipped with a BMS module 300 and a BDU module 400.

[0036] Specifically, in this embodiment of the invention, the low-voltage power supply achieves functional partitioning through the cooperation of a fixing plate and a housing 100. The first fixing plate 220 and the second fixing plate 230 are spaced apart from the corresponding sidewalls of the housing 100 in the vertical direction, and the gap between them naturally forms two independent cavities: a first accommodating space 221 is located between the first fixing plate 220 and the adjacent sidewall, and a second accommodating space 231 exists between the second fixing plate 230 and the opposite sidewall. By directly using the fixing plate as a separating medium, physical isolation is achieved within the power supply while maintaining its overall compactness. (See attached diagram.) Figure 2 The part marked in red in the middle can be understood as the area corresponding to the first accommodating space 221 and the second accommodating space 231 formed between the first fixing plate 220, the second fixing plate 230 and the upper part of the shell 100, i.e., the box 110.

[0037] More specifically, the shape of the housing space is controlled by the distance between the fixing plate and the side wall, and its width can be adapted to the size of standard electronic modules. For example, the BMS module 300 integrated and installed in the first housing space 221 is close to the outer surface of the first fixing plate 220, and its wiring harness can be connected to the inner battery cell 210 through the pre-set holes in the fixing plate, shortening the high-voltage wiring distance. Simultaneously, the BDU module 400 carried in the second housing space 231 forms surface contact with the second fixing plate 230, and its power terminals directly penetrate the fixing plate and connect to the battery cell 210 array. The BDU module 400 can be a mechanical BDU module 400 composed of relays, fuses, etc., or a solid-state BDU module 400 composed of MOSFETs, circuits, etc. This layout places both the BMS and BDU, the two core components, in the indirect influence zone of the battery cell 210's heat radiation, which not only avoids the battery cell 210's temperature directly impacting sensitive electronic components, but also utilizes the thermal conductivity of the metal fixing plate to establish a buffered heat transfer path. Additionally, epoxy boards can be installed on the two fixing plates to form effective insulation between the 210 battery cell, BMS, and BDU.

[0038] Thus, by using the mounting plate as the mounting base for the electrical modules (BMS and BDU) and as the support for the battery cells 210, the weight and assembly complexity caused by independent brackets are reduced. Furthermore, the mounting plate between the electrical modules and the battery cells 210 acts as a rigid isolation layer, effectively suppressing the transmission of mechanical vibrations, thereby providing a more stable operating environment for vulnerable components such as relays or fuses in the BDU module 400. This results in improved electrical safety and system reliability within the same volume.

[0039] Please see the appendix Figure 3 and Figure 4In one embodiment, a heat-conducting plate 410 is also installed in the second receiving space 231, and the heat-conducting plate 410 is in contact with the heating element of the BDU module 400. The heat-conducting plate 410 is also in contact with the base 120 of the housing 100. A plurality of heat-conducting plates 410 are installed in the second receiving space 231.

[0040] Specifically, in this embodiment of the invention, a heat-conducting plate 410 is integrated into the second housing space 231 of the low-voltage power supply. Its position matches the layout of the heating elements in the BDU module 400. The surface of the heat-conducting plate 410 makes surface contact with the heating elements, forming a direct heat conduction interface. This ensures efficient heat dissipation from the BDU module 400, preventing component performance degradation or failure due to localized temperature accumulation. The heat-conducting plate 410 also maintains surface contact with the base 120 of the housing 100, transferring heat from the BDU module 400 to the heat dissipation surface of the base 120 of the housing 100 through physical connection, thus achieving heat transfer within the power supply. Similarly, multiple heat-conducting plates 410 can be provided to enhance the heat exchange performance of the BDU module 400 within the second housing space 231.

[0041] In one embodiment, the heat-conducting plate 410 is connected between the BDU module 400 and the base 120 of the housing 100 by bending. The heat-conducting plate 410 and the base 120 of the housing 100 are aluminum substrates.

[0042] Specifically, in this embodiment of the invention, the heat-conducting plate 410 is connected to the BDU module 400 and the base 120 of the housing 100 by a bending method. Its geometry adapts to the contour between the BDU module 400 and the inner wall of the housing 100 in the second accommodating space 231, ensuring maximum heat conduction area within a limited space. The bending structure allows the heat-conducting plate 410 to span the gap between the BDU module 400 and the base 120, forming a continuous thermal bridge and eliminating the thermal resistance problem caused by air gaps in traditional heat dissipation solutions. The angle design at the bend enhances mechanical stability, prevents loosening of the contact surface under vibration conditions, and utilizes the elastic properties of the heat-conducting plate 410 material to compensate for positional differences between the BDU module 400 and the housing 100 through elastic deformation of the bend, thereby maintaining long-term reliable heat transfer efficiency. Its flexible connection method also takes into account assembly tolerance compensation, ensuring consistency across different batches of production.

[0043] More specifically, both the heat-conducting plate 410 and the housing 100 and base 120 are made of aluminum substrate, utilizing aluminum's low cost, low density, and high thermal conductivity to maintain overall heat dissipation capacity. The aluminum substrate heat-conducting plate 410 quickly absorbs the Joule heat generated by the BDU module 400 and evenly diffuses the heat through its metal lattice structure, preventing hot spots from forming. Simultaneously, the aluminum housing 100 and base 120 act as a large heat sink, exchanging the introduced heat with the ambient air to achieve passive cooling. The lightweight nature of the aluminum substrate avoids increasing the system weight, while its corrosion resistance ensures long-term reliable operation in harsh vehicle environments. This material selection and structural combination enhances the service life of the BDU module 400 and the stability of the power system.

[0044] Please see the appendix Figure 5 In one embodiment, a connecting post 240 is further provided between the first fixing plate 220 and the second fixing plate 230, and the connecting post 240 connects the first fixing plate 220 and the second fixing plate 230 along the gap between the plurality of battery cells 210.

[0045] Specifically, in this embodiment of the invention, the mechanical properties of the low-voltage power supply fixing plate structure (first fixing plate 220 and second fixing plate 230) are optimized through connecting posts 240. In the gap between the first fixing plate 220 and the second fixing plate 230, the connecting posts 240 are arranged along the gaps formed by the arrangement of multiple battery cells 210, with their two ends rigidly connected to the inner surfaces of the first fixing plate 220 and the second fixing plate 230, respectively. This arrangement utilizes the natural gaps in the array of battery cells 210, avoiding the occupation of additional space, and ensuring that the axial direction of the connecting posts 240 is parallel to the arrangement direction of the battery cells 210, forming a through-type support frame. The installation position of the connecting posts 240 corresponds to the gaps between the battery cells 210, ensuring a uniform distribution of connection points between the fixing plates and eliminating weak points in the structure.

[0046] More specifically, the connecting post 240 significantly enhances the overall rigidity of the fixing plate system. When external vibration or impact is transmitted to the housing 100, the connecting post 240, acting as a lateral reinforcement, locks the two fixing plates into a unified whole, suppressing relative displacement tendencies. This constraint effect directly protects multiple cells 210 from torsional forces, preventing damage to the electrodes of the cells 210 due to displacement, while maintaining the stable positioning of the cells 210 in the gaps. By distributing along the path of the gaps between the cells 210, the connecting post 240 also acts as a load transfer medium, uniformly distributing local stress throughout the entire battery assembly 200, improving the reliability of the power supply under dynamic operating conditions.

[0047] Thus, by adding connecting posts 240 to strengthen the mechanical clearance between the fixing plates, there is no need to change the arrangement of the battery cells 210 or add independent supports. Furthermore, its path along the gaps between the battery cells 210 optimizes structural efficiency, enabling the power supply to achieve a higher fatigue life within a compact volume. Overall assembly is therefore simplified, and the direct connection mechanism of the connecting posts 240 reduces the need for bolts and other auxiliary components, lowering complexity. This enhances the durability of the low-voltage power supply in vehicle applications.

[0048] In one embodiment, a support foam 800 is provided between the battery cell 210 and the upper and lower sides of the housing 100.

[0049] Specifically, in this embodiment of the invention, support foam 800 is disposed as a buffer medium in the gap between the battery cell 210 and the upper and lower sides of the housing 100. The foam block body can be die-cut according to the top and bottom contours of the battery cell 210 array, or it can be compressed and bonded between the battery cell 210 and the housing 100 by utilizing its deformation. The thickness of the support foam 800 is slightly larger than the actual distance between the battery cell assembly and the inner wall of the housing 100, generating a pre-compression amount during assembly to achieve an interference fit so that the foam always maintains continuous pressure on the battery cell 210, eliminating gap changes caused by vibration during vehicle operation. The distribution of support foam 800 covers the entire upper and lower surfaces of the battery cell assembly, forming a continuous pressure-bearing layer to ensure the assembly stability of the battery cell 210 within the housing 100.

[0050] Thus, by absorbing impact energy in the vertical direction through the support foam 800, when the shell 100 is subjected to an instantaneous impact, the foam cushions the impact through elastic deformation, reducing the damage to the battery cell 210 structure caused by inertial forces. The damping characteristics of the support foam 800 material itself can also effectively dissipate broadband vibration energy, such as eliminating the risk of damage to the battery cell 210 structure from high-frequency (200-500Hz) resonance. This improves the mechanical reliability of the battery cell 210 under bumpy vehicle conditions.

[0051] In one embodiment, the battery cell 210 is a cylindrical battery cell, with the positive and negative terminals of the battery cell 210 facing the first fixing plate 220 and the second fixing plate 230, respectively.

[0052] Specifically, in this embodiment of the invention, the selection and structural design of the low-voltage power supply cell 210 are highly adaptable. Cylindrical cells, with their standardized geometric features, are laterally arranged between the first fixing plate 220 and the second fixing plate 230, with their positive and negative terminals facing the inner surfaces of the first fixing plate 220 and the second fixing plate 230 respectively. The standardized dimensions of the cylindrical cells (such as 18650 or 21700 specifications) give this structure good production line compatibility, enabling large-scale assembly without the need for customized cells 210.

[0053] As an energy unit, the cylindrical battery cell 210's directional arrangement of its positive and negative electrodes significantly simplifies the electrical connection path: for example, the first fixing plate 220 integrates a positive busbar, directly connecting the positive terminals of each battery cell 210 via laser welding; the second fixing plate 230 simultaneously integrates a negative busbar, forming the shortest current transmission path. As a structural unit, the cylinder's inherent compressive strength endows the module with high mechanical stability. When external impacts are transmitted to the fixing plate, the densely arranged array of battery cells 210 acts as a honeycomb-like support, distributing the local load to adjacent battery cells 210, thus increasing the overall bending stiffness by more than three times. This structural characteristic is particularly suitable for the multi-directional vibration environment during vehicle operation.

[0054] Thus, by placing the cylindrical cells horizontally so that the electrode connection direction is perpendicular to the fixed plate, the busbar welding operation space can be increased threefold, improving the assembly yield. The uniform strength distribution of the standard 210 cells ensures that the power supply has no structural weak points under extreme operating conditions. Compared to the square 210 cell design, this reduces the amount of structural components used while maintaining higher strength and energy density.

[0055] In summary, this utility model provides a low-voltage power supply control component. A closed-loop frame is constructed by vertically connecting a first fixing plate and a second fixing plate in the housing. Battery cells are arranged laterally within this frame, with the positive and negative electrodes oriented and attached to the fixing plates to shorten the electrical path. Connecting posts penetrate the two plates along the gaps between the battery cells to form a reinforcing structure. The BMS and BDU are respectively placed in the receiving space formed by the fixing plate and the side wall. An aluminum-based heat-conducting plate is bent to connect the BDU and the base, improving heat dissipation efficiency. This achieves improved impact resistance and heat dissipation efficiency while reducing assembly complexity within the same volume, achieving a balance between spatial efficiency and reliability in the low-voltage power supply structure.

[0056] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A low-voltage power supply control component, characterized in that, include: The housing (100) includes two parts: a box body (110) and a base (120). The bottom surface of the box body (110) is provided with an opening, and the opening of the box body (110) is sealed and connected by the base (120). as well as The battery assembly (200) is installed in the housing (110) via a first fixing plate (220) and a second fixing plate (230) arranged opposite to each other on both sides. The first fixing plate (220) and the second fixing plate (230) are respectively located on the two side walls of the housing (110) and connected to the top side of the housing (110). The battery cell (210) of the battery assembly (200) is horizontally placed between the first fixing plate (220) and the second fixing plate (230). A connecting post (240) is also installed between the first fixing plate (220) and the second fixing plate (230). The battery assembly (200) is also provided with a heat-conducting plate (410).

2. The power control component according to claim 1, characterized in that, The first fixing plate (220) and the second fixing plate (230) form a first accommodating space (221) and a second accommodating space (231) between the first accommodating space (221) and the second accommodating space (231), respectively. The first accommodating space (221) and the second accommodating space (231) are respectively equipped with a BMS module (300) and a BDU module (400).

3. The power control component according to claim 2, characterized in that, The second accommodating space (231) is equipped with the heat-conducting plate (410), which is in contact with the heating element of the BDU module (400).

4. The power control component according to claim 3, characterized in that, The heat-conducting plate (410) also contacts the base (120) of the housing (100).

5. The power control component according to claim 3, characterized in that, Multiple heat-conducting plates (410) are installed in the second receiving space (231).

6. The power control component according to claim 4, characterized in that, The heat-conducting plate (410) is connected between the BDU module (400) and the base (120) of the housing (100) by bending.

7. The power control component according to claim 4, characterized in that, The heat-conducting plate (410) and the base (120) of the housing (100) are aluminum substrates.

8. The power control component according to claim 1, characterized in that, The connecting post (240) connects the first fixing plate (220) and the second fixing plate (230) along the gap between the plurality of cells (210).

9. The power control component according to claim 1, characterized in that, Supporting foam (800) is provided between the battery cell (210) and the upper and lower sides of the housing (100).

10. The power control component according to claim 1, characterized in that, The battery cell (210) is a cylindrical battery cell, and the positive and negative terminals of the battery cell (210) are respectively facing the first fixing plate (220) and the second fixing plate (230).

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