Detachable high-voltage distribution box assembly structure and disassembly and assembly method thereof

Abstract

The invention discloses a detachable high-voltage distribution box assembly structure and a disassembly and assembly method thereof, the detachable high-voltage distribution box assembly structure comprises a plurality of electric devices which are detachably and electrically connected, and each electric device is fixed in an electric device fixing box body through a first detachable fixing structure; the plurality of electric device fixing box bodies are mutually matched and fixed through a second detachable fixing structure, and the second detachable fixing structure comprises a positioning structure and a fixing piece, wherein the positioning structure is used for enabling two adjacent electric device fixing box bodies to be matched and positioned, and the fixing piece is used for detachably fixing the plurality of electric device fixing box bodies into a whole. According to the invention, the electric device can be replaced or the sub-assembly composed of the electric device and the electric device fixing box body corresponding to the electric device can be replaced at the same time, the high-voltage distribution box assembly does not need to be replaced, and the cost is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of component structure technology for new energy vehicles, specifically to a detachable high-voltage power distribution box assembly structure and its disassembly and assembly method. Background Technology

[0002] The battery distribution unit (BDU) is a core component of the power battery system in new energy vehicles, undertaking critical functions such as high-voltage power distribution, protection, and control. Its reliability directly affects the safe operation of the entire vehicle. However, in current after-sales maintenance scenarios for BDUs, there are common problems such as unreasonable maintenance methods, excessive costs, and resource waste, which seriously affect the economy and efficiency of after-sales maintenance for new energy vehicles.

[0003] When a BDU (Browser Duct Unit) malfunctions and requires repair, after-sales personnel typically replace the entire BDU assembly, regardless of whether the fault is caused by a single or partial internal component. In reality, most BDU malfunctions stem from abnormalities in only a few components. For example, relays, as core control components, commonly experience contact adhesion or inability to close. These types of malfunctions can often be easily fixed by restoring the relay's electrical performance, eliminating the need to replace the entire BDU. However, under the current repair model, even if only a single component has a minor, repairable fault, the entire BDU assembly is still replaced. The replaced BDU assemblies are mostly scrapped or never reused, resulting in the discarding of numerous normally functioning components, causing significant resource waste and substantially increasing after-sales maintenance material costs.

[0004] Furthermore, the complete BDU assembly replacement repair method has several drawbacks: On the one hand, to meet after-sales maintenance needs, companies need to maintain a large inventory of BDU assemblies, which not only ties up huge amounts of inventory capital but also increases the difficulty of inventory management; on the other hand, the complete replacement process is complex and time-consuming, leading to low after-sales maintenance efficiency, increasing labor maintenance costs, causing customer dissatisfaction due to excessively long vehicle repair cycles, and also increasing the workload of after-sales management. With the gradual increase in the number of new energy vehicles, these problems are becoming increasingly prominent. High after-sales maintenance costs, large inventory holdings, and complaints from both customers and after-sales management departments have become important factors restricting the improvement of after-sales service quality for new energy vehicles.

[0005] Currently, there is no BDU maintenance solution that allows for direct disassembly and maintenance of faulty components and corresponding subassemblies within battery packs, addressing after-sales issues related to BDU component failures. The existing whole-component replacement repair model is no longer adequate to meet the evolving needs of the new energy vehicle aftermarket. Therefore, a new approach is urgently needed to facilitate BDU maintenance and address issues such as high costs, resource waste, large inventory burdens, and low maintenance efficiency in existing repair solutions, thereby reducing after-sales replacement and maintenance costs. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the aforementioned background technology and provide a detachable high-voltage distribution box assembly structure and its disassembly and assembly method that facilitates BDU after-sales maintenance, solves the problems of high cost, resource waste, large inventory pressure, and low maintenance efficiency in existing maintenance solutions, and reduces after-sales replacement and maintenance costs.

[0007] To achieve this objective, the detachable high-voltage distribution box assembly structure designed in this invention includes multiple detachable electrical components. Each of the electrical components is fixed to an electrical component fixing box by a first detachable fixing structure. The multiple electrical component fixing boxes cooperate and are fixed to each other by a second detachable fixing structure. The second detachable fixing structure includes a positioning structure for positioning two adjacent electrical component fixing boxes and a fixing member for detachably fixing the multiple electrical component fixing boxes into one unit.

[0008] Furthermore, the multiple electrical components are detachably electrically connected via a 2-pin plug-in harness.

[0009] Furthermore, the first detachable fixing structure includes bolts and threaded holes. Each of the electrical components has multiple threaded holes at its bottom and multiple bolt through holes corresponding to the threaded holes at its bottom. The bolts pass through the bolt through holes and are threaded into the threaded holes.

[0010] Furthermore, the positioning structure includes positioning bosses and positioning slots disposed on two adjacent electrical component fixing boxes and cooperating with each other, wherein the positioning bosses can move up and down along the positioning slots.

[0011] Furthermore, the fastener includes a cover located above the plurality of electrical component mounting boxes and detachably fixed to the plurality of electrical component mounting boxes via a snap fastener.

[0012] Furthermore, the electrical component fixing box includes three modular box structures: a first electrical component fixing box with positioning protrusions on both the left and right sides, a second electrical component fixing box with positioning slots on both the left and right sides, and a third electrical component fixing box with a positioning protrusion on one side and a positioning slot on the other side. The first electrical component fixing box, the second electrical component fixing box, and the third electrical component fixing box can be alternately connected and positioned on the left and right sides, and can be detachably fixed as a whole by the fixing component.

[0013] Furthermore, the first electrical component fixing box includes a first electrical component fixing base and a first electrical component positioning frame fixedly connected above the first electrical component fixing base. The first electrical component positioning frame is used to accommodate the electrical component. The first electrical component fixing base is detachably fixed to the electrical component through the first detachable fixing structure. A positioning boss is provided on each of the left and right sides of the first electrical component positioning frame.

[0014] Furthermore, the second electrical component fixing box includes a second electrical component fixing base and a second electrical component positioning frame fixedly connected above the second electrical component fixing base. The second electrical component positioning frame is used to accommodate the electrical component. The second electrical component fixing base is detachably fixed to the electrical component through the first detachable fixing structure. A positioning slot is provided on each of the left and right sides of the second electrical component positioning frame.

[0015] Furthermore, the third electrical component fixing box includes a third electrical component fixing base and a third electrical component positioning frame fixedly connected above the third electrical component fixing base. The third electrical component positioning frame is used to accommodate the electrical component. The third electrical component fixing base is detachably fixed to the electrical component through the first detachable fixing structure. A positioning boss and a positioning slot are respectively provided on the left and right sides of the third electrical component positioning frame.

[0016] Furthermore, the disassembly and assembly methods for the detachable high-voltage distribution box assembly structure include single-component disassembly and assembly methods that only replace electrical components, as well as disassembly and assembly methods that simultaneously replace electrical components and the corresponding electrical component fixing box.

[0017] The single electrical component disassembly and assembly method includes: removing the fixing component, disconnecting the electrical connection between the electrical component to be replaced and the other electrical components, removing the first detachable fixing structure between the electrical component to be replaced and the electrical component fixing box, taking the electrical component to be replaced out of the electrical component fixing box, placing the replacement electrical component into the corresponding electrical component fixing box, installing the first detachable fixing structure, detachably fixing the replacement electrical component into the corresponding electrical component fixing box, electrically connecting the replacement electrical component to other electrical components, and installing the fixing component;

[0018] The disassembly and assembly method of the sub-assembly includes: removing the fasteners, disconnecting the electrical connection between the electrical component to be replaced and the other electrical components, disconnecting the positioning structure between the sub-assembly consisting of the electrical component to be replaced and the corresponding electrical component fixing box and the other sub-assemblies, positioning the sub-assembly consisting of the electrical component to be replaced and the corresponding electrical component fixing box and the other sub-assemblies through the positioning structure, installing the electrical connection between the electrical component to be replaced and the other electrical components, and installing the fasteners.

[0019] The beneficial effects of this invention are:

[0020] 1. Significantly reduce after-sales costs and minimize resource waste.

[0021] Avoid overall scrapping and waste: Only faulty electrical components or corresponding subassemblies need to be replaced, eliminating the need to discard a large number of normal components on the BDU (such as fault-free current sensors and pre-charge relays), directly reducing resource consumption. Reduce inventory costs: There is no need to stock complete BDU assemblies; only high-frequency faulty subassemblies (such as fast-charging relays and fuse subassemblies) need to be stocked. Low-frequency faulty subassemblies (such as pre-charge resistor subassemblies) can be stocked in smaller quantities, reducing inventory capital occupation and management costs.

[0022] 2. Improve after-sales repair efficiency and optimize customer experience.

[0023] Simplified maintenance process: During maintenance, it's unnecessary to remove all external copper busbars of the BDU (traditional solutions require removing all copper busbars). Only the copper busbar corresponding to the faulty subassembly needs to be removed, solving the problems of cramped space and time-consuming disassembly and reassembly. Shortened maintenance cycle: The disassembly and reassembly steps for individual electrical components or subassemblies are simpler (e.g., remove the cover → disconnect the 2-pin harness → replace the component → reset), reducing manual operation time, lowering labor costs, shortening vehicle maintenance cycles, and reducing customer complaints.

[0024] 3. Enhance platform versatility and reduce total lifecycle costs.

[0025] Cross-vehicle interchangeability: High-frequency faulty components (such as relays and fuses) often have the same mounting dimensions, and their corresponding sub-assemblies can be used interchangeably on BDUs of different vehicle models, achieving "one sub-assembly adaptable to multiple vehicle models". Reduced development costs: There is no need to design complete BDUs separately for different vehicle models. New vehicle models can be quickly adapted based on universal sub-assemblies, reducing BDU design and development costs, and simplifying subsequent parts management.

[0026] 4. Reliable structure, easy to assemble and disassemble without affecting performance.

[0027] Precise positioning: The "positioning boss + positioning slot" ensures precise alignment during sub-assembly assembly, preventing installation misalignment from affecting electrical connection stability. Robust connection: A first detachable structure (bolts) secures the electrical components, while a second detachable structure (clasp cover) secures the sub-assembly, ensuring both ease of assembly and disassembly while meeting the structural reliability requirements of high-voltage power distribution scenarios. The 2-pin plug-in wiring harness simplifies the electrical connection assembly and disassembly between components, eliminating the need for complex wiring. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments disclosed in this invention, the accompanying drawings of the embodiments will be briefly described below. These drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0029] Figure 1 The three-dimensional structure of the detachable high-voltage distribution box assembly designed in this invention Figure 1 ;

[0030] Figure 2 The three-dimensional structure of the detachable high-voltage distribution box assembly designed in this invention Figure 2 ;

[0031] Figure 3 This is a top view of the internal structure of the detachable high-voltage distribution box assembly designed in this invention.

[0032] Figure 4 A perspective view of the bottom liquid cooling plate mounted on the detachable high-voltage distribution box assembly structure designed in this invention;

[0033] Figure 5 This is a bottom view of the detachable high-voltage distribution box assembly structure designed in this invention;

[0034] Among them, 1—2-pin connector harness, 2—bolt, 3—threaded hole, 4—positioning boss, 5—positioning slot, 6—bucket, 7—box cover, 8—first electrical component fixing box (8.1—first electrical component fixing base, 8.2—first electrical component positioning frame), 9—second electrical component fixing box (9.1—second electrical component fixing base, 9.2—second electrical component positioning frame), 10—third electrical component fixing box (10.1—third electrical component fixing base, 10.2—third electrical component positioning frame), 11—liquid cooling plate, 12—liquid cooling plate fixing hole, 13—fuse, 14—main positive relay, 15—main negative relay, 16—fast charging relay. Detailed Implementation

[0035] The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below with reference to the accompanying drawings and by way of listing some optional embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 a limitation of the present invention.

[0036] Example 1

[0037] like Figure 1 As shown in Figure 5, this invention provides a specific embodiment of a detachable high-voltage distribution box assembly structure:

[0038] The device includes multiple detachable electrical components, including a fuse 13, a main positive relay 14, a main negative relay 15, and a fast-charging relay 16. The fuse 13, main positive relay 14, main negative relay 15, and fast-charging relay 16 are detachably fixed in the fuse mounting box (first electrical component mounting box 8), the main positive relay mounting box (second electrical component mounting box 9), the main negative relay mounting box (third electrical component mounting box 10), and the fast-charging relay mounting box (first electrical component mounting box 8) respectively through the structure of bolts 2 and threaded holes 3. The fuse mounting box, the main positive relay mounting box, the main negative relay mounting box, and the fast-charging relay mounting box are detachably fixed together as a whole through positioning structures and fasteners. The fuse 13, the main positive relay 14, the main negative relay 15, and the fast-charging relay 16 are detachably electrically connected through a 2-pin plug-in wire harness 1. The specific connection method is common knowledge to those skilled in the art and will not be described in detail.

[0039] The aforementioned electrical component mounting boxes are available in three modular box structures:

[0040] The first electrical component fixing box 8 consists of a first electrical component fixing base 8.1 and a first electrical component positioning frame 8.2 fixedly connected above the first electrical component fixing base 8.1. The first electrical component positioning frame 8.2 is used to accommodate electrical components (fuse 13 or fast charging relay 16). The first electrical component fixing base 8.1 is detachably fixed to the fuse 13 or fast charging relay 16 through the structure of bolts 2 and threaded holes 3. A positioning boss 4 is provided on the left and right sides of the first electrical component positioning frame 8.2.

[0041] The second electrical component fixing box 9 consists of a second electrical component fixing base 9.1 and a second electrical component positioning frame 9.2 fixedly connected above the second electrical component fixing base 9.1. The second electrical component positioning frame 9.2 is used to accommodate the main positive relay 14. The second electrical component fixing base 9.1 is detachably fixed to the main positive relay 14 through the structure of bolts 2 and threaded holes 3. A positioning slot 5 is provided on the left and right sides of the second electrical component positioning frame 9.2 respectively.

[0042] The third electrical component fixing box 10 consists of a third electrical component fixing base 10.1 and a third electrical component positioning frame 10.2 fixedly connected above the third electrical component fixing base 10.1. The third electrical component positioning frame 10.2 is used to accommodate the main negative relay 15. The third electrical component fixing base 10.1 is detachably fixed to the main negative relay 15 through the structure of bolts 2 and threaded holes 3. A positioning boss 4 and a positioning slot 5 are respectively provided on the left and right sides of the third electrical component positioning frame 10.2.

[0043] Each of the aforementioned electrical component mounting boxes has a threaded hole 3 at each of the four corners at its bottom. Each electrical component also has multiple bolt through holes corresponding to the threaded holes 3 at its bottom. Bolts 2 pass through these bolt through holes and are threaded into the threaded holes 3. Taking the main positive relay mounting box as an example, it includes a second electrical component mounting base 9.1 and a second electrical component positioning frame 9.2. The second electrical component positioning frame 9.2 is used to accommodate the main positive relay 14. The bottom of the main positive relay 14 has four bolt through holes (corresponding to the threaded holes 3 at the four corners of the second electrical component mounting base 9.1, not shown in the figure). Four bolts 2 pass through these four bolt through holes and are fixed into the four threaded holes 3. The fixing methods for the fuse 13, the main positive relay 14, and the fast-charging relay 16 are the same as those for the main positive relay 15.

[0044] like Figure 1 As shown, the above positioning structure includes positioning bosses 4 and positioning slots 5 that are disposed on two adjacent electrical component fixing boxes and cooperate with each other. The positioning bosses 4 can move up and down along the positioning slots 5.

[0045] like Figure 2 As shown, the aforementioned fastener includes a cover 7 located above multiple electrical component mounting boxes and detachably fixed to multiple electrical component mounting boxes via a buckle 6. The side of the cover 7 is provided with a U-shaped buckle female seat, and the top side of the electrical component mounting box is provided with a buckle male head (protruding hook) corresponding to the buckle female seat.

[0046] Example 2

[0047] Based on a specific embodiment of a detachable high-voltage distribution box assembly structure according to Embodiment 1, a disassembly and assembly method is provided, including a single electrical component disassembly and assembly method for replacing only electrical components, and a disassembly and assembly method for a sub-assembly consisting of replacing both the electrical components and the corresponding electrical component fixing box.

[0048] The single electrical component disassembly and assembly method includes: removing the fixing parts, disconnecting the electrical connection between the electrical component to be replaced and the other electrical components, removing the first detachable fixing structure between the electrical component to be replaced and the electrical component fixing box, taking the electrical component to be replaced out of the electrical component fixing box, placing the replacement electrical component into the corresponding electrical component fixing box, installing the first detachable fixing structure, detachably fixing the replacement electrical component into the corresponding electrical component fixing box, electrically connecting the replacement electrical component to other electrical components, and installing the fixing parts;

[0049] The disassembly and assembly method of the sub-assembly includes: removing the fasteners, disconnecting the electrical connection between the electrical component to be replaced and the other electrical components, disconnecting the positioning structure between the sub-assembly consisting of the electrical component to be replaced and the corresponding electrical component fixing box and the other sub-assemblies, positioning the sub-assembly consisting of the electrical component to be replaced and the corresponding electrical component fixing box and the other sub-assemblies through the positioning structure, installing the electrical connection between the electrical component to be replaced and the other electrical components, and installing the fasteners.

[0050] Example 3

[0051] Based on Example 2, the specific operation instructions for replacing fuse 13, main positive relay 14, main negative relay 15 and fast charging relay 16 are as follows:

[0052] Disassembly and assembly of single electrical components (taking "replacing the main positive relay 14" as an example; the operation for fuse 13, main negative relay 15, and fast charging relay 16 is the same):

[0053] Suitable for scenarios where "electrical components fail but the housing is intact," the process is simplified and requires no modification to other sub-assemblies:

[0054] Remove the fastener: Unlock the latch on the lid 7 and remove the lid 7;

[0055] Power off connection: Disconnect the 2-pin connector 1 between the main positive relay 14, fuse 13, and fast charging relay 16;

[0056] Remove the old component: Unscrew the four fixing bolts 2 at the bottom of the main positive relay and remove the old relay from the main positive relay fixing box (second electrical component fixing box 9);

[0057] Installing the new component: Place the new main positive relay 14 into the second electrical component positioning frame 9.2 of the second electrical component fixing box 9, and fix it with four bolts 2 and screw them back into the threaded holes 3;

[0058] Power on and reset: Reinsert the 2-pin connector and close the cover to complete the installation.

[0059] Disassembly and assembly of sub-assemblies (taking "replacing fuse 13 + first electrical component box 8" as an example, the operation of other sub-assemblies is the same).

[0060] Suitable for scenarios where "electrical components fail and the housing is damaged," requiring only the corresponding sub-assembly to be disassembled without affecting other parts:

[0061] Remove fasteners: Remove box cover 7;

[0062] Power off connection: Disconnect the 2-pin connector between fuse 13 and main positive relay 14;

[0063] Disassembling the old sub-assembly: Lift the combination of fuse 13 and first electrical component box 8 upwards (positioning boss 4 can move up and down along positioning slot 5 without jamming), and directly remove the old sub-assembly;

[0064] Install the new sub-assembly: Align the positioning boss 4 of the new "fuse 13 + first electrical component box 8" sub-assembly with the positioning slot 5 of the main negative relay fixing box, and insert it downwards and align it.

[0065] Power on and reset: Reinsert the 2-pin cable harness and close the cover to complete the installation.

[0066] This invention achieves multi-dimensional technological breakthroughs in the field of BDU after-sales maintenance for new energy vehicles through its "modular detachable high-voltage distribution box assembly structure and disassembly / assembly method." The technical effects can be summarized in the following four points:

[0067] I. Significantly reduce after-sales costs and achieve efficient resource utilization

[0068] In the traditional BDU (Body Duty Unit) replacement model, a single repair requires the cost of the entire assembly, and a large number of normal components are scrapped along with the faulty parts. This invention, through a "single component / sub-assembly replacement" mechanism, only repairs faulty components such as fuses, relays, or their corresponding enclosures, avoiding the waste of assemblies-level scrap. Simultaneously, after-sales inventory can focus on stocking high-frequency faulty sub-assemblies (such as fast-charging relays and fuse sub-assemblies), while stocking low-frequency faulty sub-assemblies (such as pre-charging resistor sub-assemblies) as needed, significantly reducing inventory capital occupation and management costs, fundamentally solving the industry pain points of resource waste and high costs.

[0069] II. Significantly improve repair efficiency and optimize customer service experience.

[0070] Traditional BDU repairs require the complete removal of all external copper busbars, which is time-consuming and labor-intensive due to the dense layout and cramped space. This invention employs a modular disassembly + 2-pin connector harness design, allowing for the removal of only the corresponding copper busbar for the faulty subassembly during repairs, significantly reducing the time required for individual component replacement. Furthermore, the "positioning boss + slot" design of the box assembly and the "snap-fit" design of the cover eliminates the need for complex tools, lowering the operational threshold for after-sales personnel, shortening the repair cycle, directly reducing customer waiting time, effectively improving customer satisfaction, and helping automakers optimize their after-sales service reputation.

[0071] III. Enhance platform versatility and reduce R&D and management costs throughout the entire lifecycle.

[0072] The electrical component mounting box of this invention adopts a modular design. Three types of boxes can be freely assembled using a "boob-slot" configuration to adapt to the BDU layout of different vehicle models. Meanwhile, core components such as fuses and relays mostly use industry-standard mounting dimensions, and their corresponding sub-assemblies are interchangeable across multiple vehicle models. This feature allows automakers to directly reuse existing sub-assembly solutions when developing BDUs for new models, reducing design and development investment. After-sales parts supply can also achieve "one sub-assembly adaptable to multiple models," further reducing cross-model management costs and building an efficient platform-based after-sales system for enterprises.

[0073] IV. The structure is reliable and stable, balancing ease of assembly and disassembly with safety in high-voltage scenarios.

[0074] The invention's "bolt + threaded hole" first fixing structure ensures a stable connection between electrical components and the housing; the "positioning boss + slot" achieves precise alignment of the housing assembly; and the "snap-on housing cover" integrates multiple housings into one unit. This triple design not only meets the structural reliability requirements of high-voltage power distribution scenarios but also ensures the stability of electrical connections through standardized assembly and disassembly procedures. The adoption of a 2-pin connector harness makes the assembly and disassembly of electrical connections between components as simple as "plugging and unplugging a plug," completely solving the problems of complex assembly and disassembly and easy loosening of traditional hard-wired connections. From a structural perspective, this provides a double guarantee of safety and convenience for the after-sales maintenance of BDUs.

[0075] In summary, this invention, through its modular and detachable design, comprehensively revolutionizes the BDU after-sales service model from four dimensions: cost, efficiency, versatility, and reliability. It provides an economical, efficient, and sustainable solution for the after-sales maintenance of high-voltage power distribution systems for new energy vehicles, and has significant industry promotion value.

[0076] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this invention is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this invention are defined only by the scope of the claims.

[0077] When using the terms “comprising,” “having,” and “including” as described in this specification, there may also be another part or other parts, and the terms used are generally singular but may also be plural.

[0078] It should be noted that although various components may appear and be described in this specification using terms such as "first," "second," "top," "bottom," "one side," "the other side," "one end," "the other end," etc., these components and parts should not be limited by these terms. These terms are only used to distinguish one component and part from another. For example, without departing from the scope of this specification, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component; top and bottom components may, under certain circumstances, be interchanged or converted; and components at one end and the other end may have the same or different performance characteristics.

[0079] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention should be considered within the protection scope of the present invention.

Claims

1. A detachable high-voltage distribution box assembly structure, comprising multiple detachably electrically connected electrical components, characterized in that: Each of the electrical components is fixed to an electrical component fixing box by a first detachable fixing structure. The multiple electrical component fixing boxes cooperate and are fixed to each other by a second detachable fixing structure. The second detachable fixing structure includes a positioning structure for positioning two adjacent electrical component fixing boxes and a fixing member for detachably fixing the multiple electrical component fixing boxes into one unit.

2. The detachable high-voltage distribution box assembly structure as described in claim 1, characterized in that: The multiple electrical components are detachably electrically connected to each other via a 2-pin plug-in harness (1).

3. The detachable high-voltage distribution box assembly structure as described in claim 1, characterized in that: The first detachable fixing structure includes a bolt (2) and a threaded hole (3). Each of the electrical components has multiple threaded holes (3) at the bottom and multiple bolt through holes corresponding to the threaded holes (3) at the bottom. The bolt (2) passes through the bolt through hole and is threaded into the threaded hole (3).

4. The detachable high-voltage distribution box assembly structure as described in claim 1, characterized in that: The positioning structure includes positioning bosses (4) and positioning slots (5) that are disposed on two adjacent electrical component fixing boxes and cooperate with each other. The positioning bosses (4) can move up and down along the positioning slots (5).

5. The detachable high-voltage distribution box assembly structure as described in claim 1 or 4, characterized in that: The fastener includes a cover (7) located above the plurality of electrical component mounting boxes and detachably fixed to the plurality of electrical component mounting boxes via a snap fastener (6).

6. The detachable high-voltage distribution box assembly structure as described in claim 4, characterized in that: The electrical component fixing box includes three modular box structures, including a first electrical component fixing box (8) with positioning bosses (4) on both the left and right sides, a second electrical component fixing box (9) with positioning slots (5) on both the left and right sides, and a third electrical component fixing box (10) with a positioning boss (4) on one side and a positioning slot (5) on the other side. The first electrical component fixing box (8), the second electrical component fixing box (9) and the third electrical component fixing box (10) can be connected and positioned alternately on the left and right sides, and can be detachably fixed into one piece by the fixing component.

7. The detachable high-voltage distribution box assembly structure as described in claim 6, characterized in that: The first electrical component fixing box (8) includes a first electrical component fixing base (8.1) and a first electrical component positioning frame (8.2) fixedly connected above the first electrical component fixing base (8.1). The first electrical component positioning frame (8.2) is used to accommodate the electrical component. The first electrical component fixing base (8.1) is detachably fixed to the electrical component through the first detachable fixing structure. A positioning boss (4) is provided on the left and right sides of the first electrical component positioning frame (8.2).

8. The detachable high-voltage distribution box assembly structure as described in claim 6, characterized in that: The second electrical component fixing box (9) includes a second electrical component fixing base (9.1) and a second electrical component positioning frame (9.2) fixedly connected above the second electrical component fixing base (9.1). The second electrical component positioning frame (9.2) is used to accommodate the electrical component. The second electrical component fixing base (9.1) is detachably fixed to the electrical component through the first detachable fixing structure. The second electrical component positioning frame (9.2) has a positioning slot (5) on its left and right sides respectively.

9. The detachable high-voltage distribution box assembly structure as described in claim 6, characterized in that: The third electrical component fixing box (10) includes a third electrical component fixing base (10.1) and a third electrical component positioning frame (10.2) fixedly connected above the third electrical component fixing base (10.1). The third electrical component positioning frame (10.2) is used to accommodate the electrical component. The third electrical component fixing base (10.1) is detachably fixed to the electrical component through the first detachable fixing structure. A positioning boss (4) and a positioning slot (5) are respectively provided on the left and right sides of the third electrical component positioning frame (10.2).

10. A method for disassembling and assembling a detachable high-voltage distribution box assembly structure as described in any one of claims 1-9, characterized in that: It includes a single electrical component disassembly and assembly method that replaces only the electrical components, as well as a disassembly and assembly method that replaces both the electrical components and the corresponding electrical component mounting box. The single electrical component disassembly and assembly method includes: removing the fixing component, disconnecting the electrical connection between the electrical component to be replaced and the other electrical components, removing the first detachable fixing structure between the electrical component to be replaced and the electrical component fixing box, taking the electrical component to be replaced out of the electrical component fixing box, placing the replacement electrical component into the corresponding electrical component fixing box, installing the first detachable fixing structure, detachably fixing the replacement electrical component into the corresponding electrical component fixing box, electrically connecting the replacement electrical component to other electrical components, and installing the fixing component; The disassembly and assembly method of the sub-assembly includes: removing the fasteners, disconnecting the electrical connection between the electrical component to be replaced and the other electrical components, disconnecting the positioning structure between the sub-assembly consisting of the electrical component to be replaced and the corresponding electrical component fixing box and the other sub-assemblies, positioning the sub-assembly consisting of the electrical component to be replaced and the corresponding electrical component fixing box and the other sub-assemblies through the positioning structure, installing the electrical connection between the electrical component to be replaced and the other electrical components, and installing the fasteners.

Images