A high-voltage control box assembly

Abstract

This utility model relates to the field of energy storage technology and discloses a high-voltage control box assembly, including a base plate with a first mounting area and a second mounting area arranged sequentially along its length; a PDU module disposed in the first mounting area, with a first input interface and a first output interface respectively at its two ends; a first PCS module disposed in the second mounting area, with a second input interface and a first liquid-cooling interface thereon, the second input interface and the first output interface being arranged opposite to each other; and a flow guide assembly including a first flow guide located on one side of the PDU module, one end of which is connected to the first liquid-cooling interface, and the other end extending away from the first liquid-cooling interface and extending into the plane where the first input interface is located. The advantages of this utility model are its compact structure, high integration, stable performance, and ease of installation and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a high-voltage control box assembly. Background Technology

[0002] In traditional energy storage device designs, PDUs (Power Distribution Units) and PCS (Power Conversion Systems) are typically arranged as independent modules. However, with the rapid development of new energy vehicles, energy storage systems, and industrial power electronic equipment, the requirements for integration and reliability in high-voltage power systems are increasing. To address this, existing technologies have proposed a design scheme that integrates PDU modules and PCS modules side-by-side within the same housing. While this scheme achieves module integration, the side-by-side layout results in a long electrical connection path between the PDU and PCS modules. This not only increases the length of high-voltage cables or copper busbars, raising material costs, but also increases line impedance and inductance, thereby reducing system efficiency and electrical performance. Furthermore, the longer electrical connection path increases the risk of electromagnetic interference, further affecting system stability. In addition, the side-by-side layout limits its applicability in applications with limited width and space. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a high-voltage control box assembly that is compact in structure, highly integrated, stable in performance and easy to install and maintain.

[0004] The technical solution adopted by this utility model to solve its technical problem is to provide a high-voltage control box assembly, comprising:

[0005] A substrate having a first mounting region and a second mounting region arranged sequentially along a length direction;

[0006] The PDU module is located in the first installation area and has a first input interface and a first output interface at its two ends, respectively.

[0007] A first PCS module is located in the second installation area and has a second input interface and a first liquid cooling interface. The second input interface and the first output interface are arranged opposite to each other.

[0008] The flow guide assembly includes a first flow guide located on one side of the PDU module, with one end connected to the first liquid cooling interface and the other end extending away from the first liquid cooling interface and extending into the plane where the first input interface is located.

[0009] In the aforementioned high-voltage control box assembly, a first mounting bracket is provided in the first mounting area. The first mounting bracket abuts against the side wall of the PDU module and has a first mounting hole through which the extension end of the first guide tube passes. The extension end of the first guide tube is detachably inserted into the first mounting hole.

[0010] In the aforementioned high-voltage control box assembly, the first mounting bracket is further provided with a bending portion. The bending portion has a first mounting surface that fits against the side wall of the PDU module. The first mounting surface is provided with a second mounting hole that penetrates itself. The PDU module is detachably connected to the second mounting hole via fasteners.

[0011] In the aforementioned high-voltage control box assembly, a limiting structure is provided in the second installation area. The limiting structure includes a first limiting member and a second limiting member located on both sides of the first PCS module, and the straight-line distance between the first limiting member and the second limiting member is adapted to the width of the first PCS module.

[0012] In the aforementioned high-voltage control box assembly, both the first limiting member and the second limiting member are provided with a first limiting surface that is vertically arranged and fits against the side wall of the first PCS module. The first limiting surface is provided with a first fixing hole that penetrates itself. The first PCS module is detachably connected to the first fixing hole by fasteners.

[0013] In the aforementioned high-voltage control box assembly, both the first limiting member and the second limiting member are provided with a horizontally arranged second limiting surface, and the second limiting surface is provided with a second fixing hole that penetrates itself.

[0014] In the aforementioned high-voltage control box assembly, the substrate further has a third mounting area located on the side of the second mounting area away from the first mounting area. A second PCS module is provided in the third mounting area, and a second liquid cooling interface is provided on the second PCS module. The flow guide assembly includes a second flow guide located on one side of the PDU. One end of the second flow guide is connected to the second liquid cooling interface, and the other end extends away from the second liquid cooling interface and extends into the plane where the first input interface is located. The first mounting bracket is provided with a third mounting hole through which the extended end of the second flow guide passes.

[0015] In the aforementioned high-voltage control box assembly, a second mounting bracket is provided in the second mounting area. The second mounting bracket is attached to the side wall of the first PCS module and has a groove for the second guide tube to pass through.

[0016] In the aforementioned high-voltage control box assembly, the groove on the side away from the substrate has a horizontally arranged second mounting surface. The second mounting surface has a fourth mounting hole that penetrates itself, and the second guide tube is fitted with a plurality of locking structures. A portion of the locking structures are detachably connected to the second fixing hole, and another portion of the locking structures are detachably connected to the fourth mounting hole.

[0017] In the aforementioned high-voltage control box assembly, a horizontally arranged wire passage is provided in the second installation area. The wire passage is located below the first PCS module and extends along the length of the first PCS module, with both ends of the wire passage connected to the outside.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. In this invention, by arranging the PDU module and the first PCS module sequentially along the length of the substrate, and positioning the first output interface of the PDU module opposite to the second input interface of the first PCS module, the electrical connection path between them is significantly shortened. This design not only reduces the length of high-voltage cables or copper busbars, lowering material costs and assembly complexity, but also effectively reduces line impedance and parasitic inductance, improving the system's power transmission efficiency and electrical performance. Simultaneously, it reduces the risk of electromagnetic interference and enhances the stability of system operation.

[0020] 2. In this invention, one end of the first guide pipe is connected to the liquid cooling interface of the first PCS module, and the other end extends into the plane where the first input interface of the PDU module is located, realizing a centralized layout of the liquid cooling access port and the high-voltage power input port on the same operating plane. This design facilitates the unified connection and maintenance of the cooling pipeline and the external liquid cooling system, improves the convenience of overall installation and subsequent maintenance, is conducive to achieving modular rapid assembly, and enhances the system's integration level and maintainability.

[0021] 3. In this utility model, a first mounting bracket is provided in the first installation area. The first mounting bracket abuts against the side wall of the PDU module and has a first mounting hole for the extension end of the first guide tube to pass through. The extension end of the first guide tube is detachably inserted into the first mounting hole. This design not only achieves stable installation and precise positioning of the PDU module, but also provides fixed support for the first guide tube. While enhancing the mechanical stability and vibration resistance of the module connection, it also improves the reliability of the overall structure and the convenience of installation and maintenance. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a high-voltage control box assembly according to the present invention.

[0023] Figure 2 This is an exploded view of a high-voltage control box assembly according to the present invention.

[0024] Figure 3 This is a partial structural schematic diagram of a high-voltage control box assembly according to the present invention.

[0025] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0026] 100, substrate; 110, first mounting area; 120, second mounting area; 130, third mounting area; 200, PDU module; 210, first input interface; 220, first output interface; 300, first PCS module; 310, second input interface; 320, first liquid cooling interface; 400, second PCS module; 410, third input interface; 420, second liquid cooling interface; 500, flow guide tube assembly; 510, first flow guide tube; 520, second flow guide tube; 530, locking structure; 600, first mounting... Mounting bracket; 610, first mounting hole; 620, bent portion; 621, first mounting surface; 622, second mounting hole; 630, third mounting hole; 700, limiting structure; 710, first limiting member; 711, first limiting surface; 712, first fixing hole; 713, second limiting surface; 714, second fixing hole; 720, second limiting member; 730, third limiting member; 740, fourth limiting member; 800, second mounting bracket; 810, groove; 811, second mounting surface; 812, fourth mounting hole; 900, wire passage. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] like Figures 1 to 3 As shown, in this embodiment, a high-voltage control box assembly includes:

[0033] The substrate 100 has a first mounting region 110 and a second mounting region 120 arranged sequentially along the length direction.

[0034] PDU module 200, which is located in the first installation area 110, has a first input interface 210 and a first output interface 220 at its two ends respectively;

[0035] A first PCS module 300 is located in the second installation area 120 and has a second input interface 310 and a first liquid cooling interface 320. The second input interface 310 and the first output interface 220 are arranged opposite to each other.

[0036] The flow guide assembly 500 includes a first flow guide 510 located on one side of the PDU module 200. One end of the first flow guide 510 is connected to the first liquid cooling interface 320, and the other end extends away from the first liquid cooling interface 320 and into the plane where the first input interface 210 is located. This design significantly reduces the amount of high-voltage cables or copper busbars used by shortening the electrical connection path between the PDU module 200 and the first PCS module 300, thereby reducing material costs and assembly complexity. It also effectively reduces line impedance and parasitic inductance, improving power transmission efficiency and electrical performance. The short-path design also suppresses electromagnetic interference risks and enhances system stability. Furthermore, the coplanar arrangement of the liquid cooling interface and the high-voltage power input interface enables unified connection and maintenance of the cooling pipeline and external systems, significantly improving installation convenience and maintenance efficiency.

[0037] Specifically, such as Figures 1 to 3As shown, the substrate 100 has a rectangular structure and serves as the supporting base for the entire high-voltage control box assembly, used to support and integrate various functional modules and auxiliary structures. The substrate 100 is made of metal, which has good structural strength and heat dissipation performance. Alternatively, composite materials with insulating properties can be selected according to actual needs, and an insulating layer can be set on its surface to meet electrical safety requirements.

[0038] Furthermore, the substrate 100 is sequentially divided along its length into a first mounting area 110, a second mounting area 120, and a third mounting area 130, for mounting the PDU module 200, the first PCS module 300, and the second PCS module 400, respectively, achieving orderly arrangement and structural integration among the modules. This layout not only improves the overall space utilization but also helps optimize electrical connection paths, reduce line impedance and parasitic inductance, and enhance the system's electrical performance.

[0039] In this embodiment, the PDU module 200 (power distribution unit) is detachably disposed within the first mounting area 110, and its two ends are respectively provided with a first input interface 210 and a first output interface 220, for realizing the access of external high-voltage power supply (such as a power battery) and the initial distribution of electrical energy. Preferably, the PDU module 200 is detachably connected to the second mounting hole 622 by fasteners.

[0040] Furthermore, to enhance the installation stability and structural reliability of the PDU module 200, a first mounting bracket 600 is provided on the side of the first installation area 110 near the edge of the substrate 100. The first mounting bracket 600 abuts against the side wall of the PDU module 200 and is used to position and limit the PDU module 200.

[0041] Furthermore, the first mounting bracket 600 is arranged vertically, located in a plane close to the first input interface 210, and is fixed to the base plate 100 by welding or detachable connection. Preferably, the first mounting bracket 600 is detachably fixed to the base plate 100 by fasteners (such as bolts, screws, etc.), thereby facilitating installation, disassembly, and subsequent maintenance.

[0042] Furthermore, the first mounting bracket 600 has a C-shaped structure, with its opening facing the first PCS module 300. This not only provides good structural strength but also reserves ample operating space for the arrangement of the guide tube assembly 500. The first mounting bracket 600 has at least one bent portion 620 near the PDU module 200. The bent portion 620 is rectangular, extending vertically to form a rectangular first mounting surface 621 that fits against the side wall of the PDU module 200. The first mounting surface 621 has a through-hole circular second mounting hole 622 for engaging with fasteners, thereby fixing and limiting the PDU module 200 and enhancing its installation stability.

[0043] Preferably, there are two bending portions 620, located at the upper and lower ends of the first mounting bracket 600, and arranged in a staggered manner. This design not only enhances the connection rigidity between the first mounting bracket 600 and the PDU module 200, but also effectively avoids stress concentration problems caused by structural symmetry, thereby improving the overall vibration resistance and assembly reliability of the structure.

[0044] Furthermore, the first mounting bracket 600 has two first mounting holes 610, which are circular and arranged in a straight line along the vertical direction, for the extension end of the first guide tube 510 to pass through, thereby providing guidance and support for the guide tube. This design enables the first mounting bracket 600 to not only achieve rapid positioning and stable installation of the PDU module 200, improving the efficiency and consistency of module assembly, but also to provide a reliable fixing structure for the first guide tube 510, preventing it from shifting or falling off due to vibration or external forces, thereby enhancing the stability and safety of the cooling system.

[0045] Furthermore, the first mounting bracket 600 is provided with two third mounting holes 630 for the extension ends of the second guide tube 520 to pass through. The third mounting holes 630 are circular, located above the first mounting holes 610, and arranged in a straight line along the vertical direction. This layout not only facilitates the independent installation and maintenance of different guide tubes, but also ensures a reasonable spatial distribution between the guide tubes, avoiding mutual interference.

[0046] In this embodiment, the first PCS module 300 (power conversion system) is detachably disposed within the second mounting area 120, and has a second input interface 310 and a first liquid cooling interface 320. The second input interface 310 is arranged opposite to the first output interface 220 of the PDU module 200 and is electrically connected via a cable to achieve efficient power transmission. Preferably, the first PCS module 300 is detachably connected to the first fixing hole 712 via fasteners.

[0047] To improve the stability of the first PCS module 300 during installation, a limiting structure 700 is provided in the second installation area 120. This limiting structure 700 includes a first limiting member 710 and a second limiting member 720 located on both sides of the first PCS module 300, respectively. The linear distance between the first limiting member 710 and the second limiting member 720 is adapted to the width of the first PCS module 300, thereby achieving initial positioning and lateral limiting of the first PCS module 300 and preventing it from shifting under vibration or external force.

[0048] Furthermore, the first limiting member 710 and the second limiting member 720 have the same structure, both being Z-shaped and vertically arranged at the edge of the substrate 100. They are fixed to the substrate 100 by welding or detachable connection. Preferably, they are detachably fixed to the substrate 100 by fasteners, which not only facilitates installation and disassembly but also improves the convenience of later maintenance and is conducive to achieving modular rapid assembly.

[0049] Furthermore, both the first limiting member 710 and the second limiting member 720 have vertically arranged first limiting surfaces 711 on the side near the first PCS module 300. These first limiting surfaces 711 fit against the side wall of the first PCS module 300 to achieve precise positioning of the first PCS module 300. The first limiting surface 711 also has a through-hole circular fixing hole 712 for engaging with fasteners, thereby achieving a stable fixation of the first PCS module 300 and enhancing its installation stability and vibration resistance.

[0050] Furthermore, both the first limiting member 710 and the second limiting member 720 are provided with a horizontally arranged second limiting surface 713. The second limiting surface 713 is provided with a circular second fixing hole 714 that penetrates itself, which is used to cooperate with the locking structure 530 to reliably fix the second guide pipe 520, prevent it from being displaced due to vibration or external force, and further improve the structural stability and safety of the cooling system.

[0051] Preferably, the first limiting member 710 and the second limiting member 720 are provided in two sets and arranged along the length direction of the substrate 100, so that the limiting structure 700 can effectively support and limit multiple parts of the first PCS module 300 and the second guide tube 520, thereby further improving the stability and vibration resistance of the first PCS module 300 during installation.

[0052] To further enhance the system's power handling capability, the substrate 100 also has a third mounting area 130 located on the side of the second mounting area 120 opposite to the first mounting area 110, for mounting the second PCS module 400. The second PCS module 400 is essentially the same as the first PCS module 300, featuring a third input interface 410 and a second liquid-cooling interface 420, and is also securely mounted via a limiting structure 700. This design not only expands the power handling capability of the high-voltage control box assembly to meet the application requirements of higher power levels, but also improves the overall structural functional integration and modular expansion capabilities, enhancing the product's adaptability in different application scenarios.

[0053] Furthermore, a third limiting member 730 and a fourth limiting member 740 are provided on both sides of the third installation area 130. The straight-line distance between the two is adapted to the width of the second PCS module 400 to prevent the module from lateral displacement due to vibration or external force during operation, thereby ensuring the stability and reliability of its installation.

[0054] To achieve efficient heat dissipation, this embodiment also includes a flow guide assembly 500. The flow guide assembly 500 includes a first flow guide 510 and a second flow guide 520, which are respectively connected to the liquid cooling interfaces on the first PCS module 300 and the second PCS module 400. One end of the first flow guide 510 is connected to the first liquid cooling interface 320 of the first PCS module 300, and the other end extends away from the liquid cooling interface, passing through a first mounting hole 610 to the plane where the first input interface 210 of the PDU module 200 is located. The second flow guide 520 is connected to the second liquid cooling interface 420 of the second PCS module 400, and extends through a third mounting hole 630 to the plane where the first input interface 210 of the PDU module 200 is located. This design achieves a centralized layout of the liquid cooling access port and the high-voltage power input port on the same operating plane, facilitating unified connection and maintenance of the cooling pipes and the external liquid cooling system, significantly improving installation convenience and maintenance efficiency.

[0055] Furthermore, two of each of the first and second guide pipes 510 and 520 are provided, arranged horizontally in a vertical order, serving as the liquid inlet and return passages for the liquid cooling systems of the first PCS module 300 and the second PCS module 400, respectively. The extension ends of the two first guide pipes 510 are detachably inserted into the first mounting hole 610, and the extension ends of the two second guide pipes 520 are detachably inserted into the third mounting hole 630.

[0056] Furthermore, the second guide tube 520 is fitted with multiple locking structures 530 for multi-point fixation and limiting of the guide tube. Among them, some of the locking structures 530 are detachably connected to the second fixing hole 714 on the second limiting member 720, and other locking structures 530 are detachably connected to the fourth mounting hole 812 on the second mounting bracket 800, thereby forming a multi-point support and fixing structure for the second guide tube 520, effectively improving its installation stability and vibration resistance.

[0057] Furthermore, the locking structure 530 can be selected in various forms, including but not limited to pipe clamps, clamps, straps, etc. Its main function is to limit and fix the guide pipe to prevent it from shifting or loosening due to vibration, thermal expansion or external force during operation.

[0058] Preferably, the locking structure 530 is a strap. One end has a buckle structure, and the other end has multiple adjustment holes. By adjusting the length of the strap, it can accommodate guide tubes of different outer diameters and achieve fastening and limiting of the guide tubes. The strap is detachably connected to the second limiting member 720 and the second mounting bracket 800 through the second fixing hole 714 on the second limiting member 720 and the fourth mounting hole 812 on the second mounting bracket 800.

[0059] Because the second guide tube 520 is relatively long, it is susceptible to displacement or deformation due to vibration, thermal expansion, or external forces during operation. To ensure its installation stability, in this embodiment, a second mounting bracket 800 is provided within the second installation area 120. The second mounting bracket 800 is attached to the side wall of the first PCS module 300 and has a groove 810 for the second guide tube 520 to pass through, which is used to guide and limit the second guide tube 520 to prevent it from shifting due to external forces or vibrations.

[0060] Furthermore, the second mounting bracket 800 has a Z-shaped structure and is vertically arranged at the edge of the substrate 100, and is fixed to the substrate 100 by welding or detachable connection. Preferably, it is detachably fixed to the substrate 100 by fasteners, which effectively improves the convenience of disassembly, assembly and maintenance.

[0061] Furthermore, a groove 810 is located at the upper end of the second mounting bracket 800, with its opening facing away from the first PCS module 300, facilitating the insertion and installation of the second guide tube 520. A horizontally arranged second mounting surface 811 is provided on the side of the groove 810 away from the substrate 100. The second mounting surface 811 has a through-hole circular fourth mounting hole 812, used to cooperate with the locking structure 530 to fix the second guide tube 520, preventing displacement due to vibration or thermal expansion during operation, thus improving the structural stability and safety of the cooling system. In addition, to adapt to the needs of different application scenarios, the design of the second mounting bracket 800 can be adjusted to change the position and size of the groove 810 according to actual needs, to meet the installation requirements of guide tubes of different specifications.

[0062] Preferably, the second mounting bracket 800 is disposed between the two first limiting members 710, and cooperates with the first limiting members 710 to form a multi-point fixation for the second guide pipe 520. This design not only enhances the fixing strength of the second guide pipe 520, but also effectively avoids the problem of local stress concentration, and improves the overall vibration resistance and reliability of the cooling system.

[0063] In this embodiment, a horizontally arranged cable routing channel 900 is provided in the second installation area 120 to provide an orderly wiring path for electrical cables (such as signal lines, control lines, or auxiliary power lines). The cable routing channel 900 is located below the first PCS module 300 and extends along its length, with both ends connected to the outside, facilitating the introduction and exit of cables and realizing efficient connection between internal and external circuits.

[0064] Preferably, the cable passage 900 is provided in two sets, arranged along the width direction of the substrate 100. This arrangement can flexibly allocate cables with different functions according to actual wiring needs, improve the standardization of wiring and space utilization, avoid cable crossing or tangling, and reduce the risk of electromagnetic interference.

[0065] Furthermore, the cable passage 900 has a rectangular cross-section structure, formed by a U-shaped strip of steel and the upper surface of the base plate 100. This strip of steel is fixed to the base plate 100 by welding or a detachable connection. Preferably, it is detachably fixed to the base plate 100 by fasteners, facilitating the opening of the passage during equipment installation, commissioning, or maintenance to inspect, replace, or add / remove internal cables, significantly improving the system's maintainability and assembly flexibility.

Claims

1. A high voltage control box assembly characterized by, include: A substrate (100) having a first mounting region (110) and a second mounting region (120) arranged sequentially along a length direction; PDU module (200), the PDU module (200) is located in the first installation area (110), and its two ends are respectively provided with a first input interface (210) and a first output interface (220); The first PCS module (300) is located in the second installation area (120) and has a second input interface (310) and a first liquid cooling interface (320) thereon. The second input interface (310) and the first output interface (220) are arranged opposite to each other. The flow guide assembly (500) includes a first flow guide (510) located on one side of the PDU module (200), with one end connected to the first liquid cooling interface (320) and the other end extending away from the first liquid cooling interface (320) and extending into the plane where the first input interface (210) is located.

2. A high voltage control box assembly according to claim 1, wherein, The first mounting area (110) is provided with a first mounting bracket (600), which abuts against the side wall of the PDU module (200) and has a first mounting hole (610) through which the extension end of the first guide tube (510) passes, and the extension end of the first guide tube (510) is detachably inserted into the first mounting hole (610).

3. A high voltage control box assembly according to claim 2, wherein, The first mounting bracket (600) is also provided with a bending part (620), the bending part (620) has a first mounting surface (621) that fits against the side wall of the PDU module (200), the first mounting surface (621) is provided with a second mounting hole (622) that penetrates itself, and the PDU module (200) is detachably connected to the second mounting hole (622) by fasteners.

4. A high voltage control box assembly according to claim 2, wherein, The second installation area (120) is provided with a limiting structure (700), which includes a first limiting member (710) and a second limiting member (720) located on both sides of the first PCS module (300). The straight distance between the first limiting member (710) and the second limiting member (720) is adapted to the width of the first PCS module (300).

5. A high voltage control box assembly according to claim 4, wherein, Both the first limiting member (710) and the second limiting member (720) are provided with a first limiting surface (711) arranged vertically and in contact with the side wall of the first PCS module (300). The first limiting surface (711) is provided with a first fixing hole (712) that penetrates itself. The first PCS module (300) is detachably connected to the first fixing hole (712) by fasteners.

6. A high voltage control box assembly according to claim 4, wherein, Both the first limiting member (710) and the second limiting member (720) are provided with a horizontally arranged second limiting surface (713), and the second limiting surface (713) is provided with a second fixing hole (714) that penetrates itself.

7. A high voltage control box assembly according to claim 6, wherein, The substrate (100) also has a third mounting area (130) located on the side of the second mounting area (120) away from the first mounting area (110). The third mounting area (130) has a second PCS module (400) and a second liquid cooling interface (420) on the second PCS module (400). The guide tube assembly (500) includes a second guide tube (520) located on one side of the PDU module (200). One end of the guide tube (520) is connected to the second liquid cooling interface (420), and the other end extends away from the second liquid cooling interface (420) and extends into the plane where the first input interface (210) is located. The first mounting bracket (600) has a third mounting hole (630) through which the extended end of the second guide tube (520) passes.

8. A high voltage control box assembly according to claim 7, wherein, The second mounting area (120) is provided with a second mounting bracket (800), which is attached to the side wall of the first PCS module (300) and has a groove (810) through which the second guide tube (520) passes.

9. A high voltage control box assembly according to claim 8, wherein, The groove (810) has a horizontally arranged second mounting surface (811) on the side away from the substrate (100). The second mounting surface (811) has a fourth mounting hole (812) that penetrates it. The second guide tube (520) is fitted with a plurality of locking structures (530). A portion of the locking structures (530) is detachably connected to the second fixing hole (714), and another portion of the locking structures (530) is detachably connected to the fourth mounting hole (812).

10. A high-voltage control box assembly according to claim 7, characterized in that, The second installation area (120) is provided with a horizontally arranged wire passage (900). The wire passage (900) is located below the first PCS module (300) and extends along the length of the first PCS module (300). Both ends of the wire passage (900) are respectively connected to the outside.

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