An energy storage converter module

Abstract

This invention provides an energy storage converter module, including a housing, a fixing member, an electrical connection unit, a circuit breaker, a fuse, and a front panel assembly. The housing has a maintenance window, the fixing member has an insulating mounting portion facing the maintenance window, the electrical connection unit has a first terminal and a second terminal, the circuit breaker has an operating shaft, and the fuse is adapted to be detachably fixed to the insulating mounting portion, the first terminal, and the second terminal along the Y-axis and is adapted to be detached from the front end of the fixing member through the maintenance window. The front panel assembly includes a front panel covering the maintenance window and an operating handle, the operating handle being adapted to be detachably fixed to the operating shaft to drive the circuit breaker to open and close. The fuse of this application is easy to maintain.

Description

Technical Field

[0001] This invention relates to the field of energy storage converter technology, and more specifically to an energy storage converter module. Background Technology

[0002] In large-scale energy storage systems, modular energy storage converter designs are often used to facilitate expansion and maintenance. Multiple energy storage converter modules are installed side by side in a single cabinet, like drawers, to form a larger power converter cluster.

[0003] Each energy storage converter module is equipped with a fuse to protect its power devices. When a fuse in an energy storage converter module needs to be replaced, the maintenance process is extremely cumbersome: maintenance personnel must first completely remove the entire faulty module from the cabinet, and then remove the top cover of the faulty module before they can access the internal fuse and replace it. This maintenance method involves many steps and is time-consuming, making fuse maintenance extremely inconvenient. Summary of the Invention

[0004] The purpose of this application is to improve the above-mentioned defects of energy storage converter modules in the prior art to a certain extent, and to provide an energy storage converter module whose fuse is easy to maintain.

[0005] The applicant's research revealed that the root cause of the aforementioned inconvenience in fuse maintenance lies in the conflict between the functional layout of the energy storage converter module's front panel and maintenance requirements. Specifically, to ensure the compact operation and centralized interfaces of the energy storage converter module, the front panel space is fully occupied by necessary interfaces such as input / output terminals and control switches, resulting in a compact layout with no redundant space. Therefore, it is impossible to create a dedicated maintenance window on the front panel for the individual removal and installation of fuses. Or, even if such a dedicated maintenance window were created, removing the fuse would easily cause interference with the circuit breaker controlled by the control switch and the electrical connection blocks inside the energy storage converter module.

[0006] Since the fuse cannot be directly accessed from the front panel, the only way to maintain it is to remove the entire module from the cabinet and then remove its top cover to access the internal components. This "moving the whole module and then opening the cover for inspection" method is essentially a major disassembly of a large functional module to replace a small fuse, resulting in low maintenance efficiency.

[0007] Based on the above, and in order to improve the deficiencies of the prior art and achieve the purpose of this application, the applicant adopts the following technical solution to solve the problem:

[0008] Technical solution one relates to an energy storage converter module, comprising: a housing having a first sidewall at its front end along the Y-axis, the first sidewall having a maintenance window; a fixing member fixedly connected to the housing, having an insulating mounting portion facing the maintenance window; an electrical connection unit including a connection terminal embedded in the first sidewall and an electrical connector electrically connected to the connection terminal, the electrical connector having a first terminal and a second terminal located on the front side of the insulating mounting portion; a circuit breaker connected in series with the electrical connector within the housing, having an operating shaft; and a fuse adapted to connect along the Y-axis to the insulating mounting portion, the first terminal, and the second terminal. The device is detachably fixed and adapted to be installed and removed from the front end of the fastener through the maintenance window; and a front panel assembly including a front panel and an operating handle connected to the front panel, the front panel covering the maintenance window, the operating handle being adapted to be detachably fixed to the operating shaft to drive the circuit breaker to open and close; a plurality of input terminals and output terminals serving as the main circuit of the module are also provided on the first sidewall; the profile of the front panel is configured to avoid the input terminals and output terminals when covering the maintenance window, and the rotation trajectory of the operating handle does not interfere with the input terminals, output terminals and the connection terminals.

[0009] Technical Solution 2 based on Technical Solution 1: The fuse has a first end and a second end that are respectively fixedly connected to the first terminal and the second terminal, and the first end and the second end are arranged along the X-axis direction; the operating shaft and the fuse are arranged along the Z-axis direction.

[0010] Technical solution three based on technical solution two: The fixing member is provided with a support surface for supporting the fuse along the Z-axis direction.

[0011] Technical solution four based on technical solution three: The fixing member is further provided with an insulating limiting wall opposite to the support surface along the Z-axis direction, and the insulating limiting wall is adapted to abut against the side of the fuse away from the support surface.

[0012] Technical Solution 5 based on Technical Solution 1: The circuit breaker includes a body connected in series with an electrical connector, and an operating shaft is used to drive the body to open and close the circuit breaker; the fixing member is located between the body and the maintenance window along the Y-axis; the operating shaft extends along the Y-axis, and the operating handle is anti-rotationally inserted into the operating shaft.

[0013] Technical solution six based on technical solution five: The electrical connector includes a first terminal block and a second terminal block, the first terminal block is provided with a first terminal, and the second terminal block is provided with a second terminal; the first terminal, the second terminal and the connecting terminal are arranged sequentially along the X-axis direction; the body is connected in series to the second terminal block.

[0014] Technical solution seven based on technical solution six: The fixing member is provided with an insulating positioning groove on the side away from the maintenance window for the first terminal block to pass through, and the insulating positioning groove extends and penetrates along the X-axis direction.

[0015] Technical solution eight based on technical solution six: The main body has a connection port on the side near the connection terminal, and the connection port is connected in series to the second terminal block.

[0016] Technical solution nine based on technical solution five: The front panel is provided with a through hole; the operating handle includes a fixed part and a rotating part, the fixed part is fixed to the front panel at the edge of the through hole, and the rotating part is rotatably connected to the fixed part about an axis extending along the Y-axis and is adapted to be inserted into the operating shaft to prevent rotation.

[0017] Technical solution ten based on technical solution one: The fastener is made of insulating material.

[0018] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0019] In technical solution one, the fuse is suitable for removal and installation from the front end of the fixing component through the maintenance window, which means that the fuse is not only located on the front side of the fixing component, but also on the front side of the first terminal and the second terminal. The direct combination of the features "the first side wall is provided with a maintenance window", "the fuse is suitable for removal and installation from the front end of the fixing component through the maintenance window" and "the front panel is covered by the maintenance window" creates a unified maintenance window on the front panel of the module that integrates circuit breaker operation and fuse maintenance functions, and avoids interference between the circuit breaker operation handle and the fuse maintenance space in the front panel layout. Maintenance personnel no longer need to search for different operating surfaces or disassemble the entire module to operate circuit breakers or replace fuses. All operations can be completed through this single integrated maintenance window. Specifically, when a fuse needs maintenance, the operator only needs to disconnect the operating handle from the operating shaft, open the front panel, and remove the fuse through the maintenance window. After replacement, the new fuse is installed through the maintenance window, the front panel is then placed over the maintenance window, and the operating handle is secured to the operating shaft. This eliminates the need for maintenance personnel to pull the entire energy storage converter module out of the cabinet and remove the top cover when the energy storage converter module is installed in a drawer-type manner. They can access and replace fuses through a single maintenance window on the front of the module, greatly simplifying the maintenance path and improving the convenience of maintenance operations.

[0020] The mounting brackets ensure that the rear sides of the first and second terminals are supported by the insulating mounting parts during fuse installation and removal, preventing damage. Furthermore, the detachable connection between the operating handle and the operating shaft allows the handle to function as a front panel handle when the maintenance window needs to be opened, facilitating force application. During front panel installation, since the circuit breaker is fixed relative to the housing, the detachable connection between the operating handle and the operating shaft guides and positions the front panel. This allows the operating handle to function as both a control switch for the circuit breaker and a handle and positioning component for the front panel, achieving multiple uses and improving the feel and precision of cover installation and removal.

[0021] The front panel's outline avoids the densely packed input / output terminals, and the rotation trajectory of the operating handle does not interfere with any of the terminals. While ensuring the centralization of the front panel interfaces and not reducing the number of power terminals, it integrates the maintenance window and operating interface, resolving the contradiction between the 'compact layout' and 'maintainability' of the energy storage converter module's front panel.

[0022] In technical solution two, the first and second ends are arranged along the X-axis, and the operating axis and fuse are arranged along the Z-axis, so that the length direction of the fuse is consistent with the width direction of the module. This is beneficial to reserve sufficient and non-interfering installation space for the fuse and operating handle within the limited height (Z-axis) and width (X-axis) space of the module. It also realizes that the fuse support surface and the circuit breaker operating surface are spatially staggered in the compact front panel area, avoiding mutual interference between the two during disassembly, assembly and maintenance, and improving the utilization rate and layout rationality of the front panel space.

[0023] In technical solution three, the fastener is provided with a support surface for supporting the fuse along the Z-axis direction, which improves the stability and positional accuracy of the fuse installed inside the module, ensures accurate alignment and reliable connection between the first and second terminals of the fuse and the electrical connector, and thus helps to improve the stability of the electrical connection.

[0024] In technical solution four, the supporting surface and the insulating limiting wall together form a structure that clamps or limits the fuse in the Z-axis direction, effectively preventing the fuse from loosening or jumping perpendicular to the supporting surface during module transportation, installation, or vibration. This further enhances the mechanical reliability of fuse installation and the stability of electrical connection. Furthermore, the fuse can be initially positioned during installation.

[0025] In technical solution five, the fixing component is located between the body and the opening along the Y-axis, making it possible to perform fuse maintenance and circuit breaker operation sequentially from the front panel opening inwards, with clear spatial hierarchy. "Anti-rotation plug-in" refers to a plug-in fit that can transmit torque. The anti-rotation plug-in between the operating handle and the operating shaft provides a direct, reliable, and easy-to-install force transmission method, enabling direct and reliable opening and closing control of the circuit breaker located inside the module through the front panel assembly. Simultaneously, it ensures that the operating handle can be easily separated from the circuit breaker when disassembling the front panel for fuse maintenance, improving the modularity and maintainability of the front panel assembly. The plug-in structure between the operating handle and the operating shaft also serves as a good guide and positioning mechanism, further enhancing the multi-functionality of the operating handle.

[0026] In technical solution six, the first terminal block, the second terminal block, and the connecting terminal are arranged sequentially along the X-axis, and the circuit breaker body is connected in series on the second terminal block, making the wiring clear and orderly and optimizing the electrical layout inside the module.

[0027] In technical solution seven, the fixing component is provided with an insulating positioning groove for the first terminal block to pass through. This allows for quick and accurate positioning of the first terminal block during assembly, limiting its displacement in the X and Z axes. This ensures precise alignment of the first terminal and reliable connection with the fuse, contributing to the stability of the electrical connection during long-term operation. Furthermore, it minimizes the change in position of the first terminal block after fuse removal, improving assembly efficiency.

[0028] In technical solution eight, a connection port is provided on the side of the main body near the connection terminal, so that the wiring port of the circuit breaker faces the connection terminal side of the module, which shortens the current path from the connection terminal to the circuit breaker, making the second wiring block direct and compact, and the internal space more tidy.

[0029] In technical solution nine, the rotating part and the fixed part are rotatably connected around an axis extending along the Y-axis and are adapted to be anti-rotatedly plugged into the operating shaft, providing users with a circuit breaker control interface that conforms to operating habits and is convenient for applying force. The rotating connection method makes the opening and closing operations smooth and effortless, while the anti-rotation plugging structure ensures that the operating torque is reliably transmitted to the circuit breaker, and at the same time, it facilitates the overall disassembly of the front panel.

[0030] In technical solution ten, the fastener is made of insulating material, which provides reliable electrical isolation between the fuse and its live parts and the grounded metal shell, improving the electrical safety of the module and making it easy to process. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of an energy storage converter module according to an embodiment of the present invention;

[0033] Figure 2 This is an exploded perspective view of the energy storage converter module according to an embodiment of the present invention;

[0034] Figure 3 for Figure 1 Front view;

[0035] Figure 4 for Figure 3 Sectional view along the AA direction;

[0036] Figure 5 for Figure 4 An enlarged schematic diagram of part A.

[0037] Figure 6 This is a schematic diagram of a circuit breaker, a fixing member, a fuse, an operating handle, and an electrical connector according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the fastener, fuse, and electrical connector according to an embodiment of the present invention;

[0039] Explanation of key figure labels:

[0040] Housing 10; First sidewall 11; Maintenance window 12; Fixing member 20; Insulating mounting part 21; Support surface 211; Insulating limiting wall 22; Insulating positioning groove 23; Electrical connection unit 30; Connection terminal 31; First terminal block 32; First terminal 321; Second terminal block 33; Second terminal 331; Circuit breaker 40; Body 41; Connection port 411; Operating shaft 42; Fuse 50; First end 51; Second end 52; Front panel assembly 60; Front panel 61; Through hole 611; Operating handle 62; Fixing part 63; Rotating part 64. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0043] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0044] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0045] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0046] In the claims and the description other than the embodiments, the terms "X-axis direction," "Y-axis direction," and "Z-axis direction" only refer to a feature having one of the aforementioned directions being perpendicular to a feature having another direction, and do not require that they be implemented according to the "X-axis direction," "Y-axis direction," and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to both the Y-axis direction and the Z-axis direction. The X-axis direction can be divided into left and right, the Y-axis direction into front and back, and the Z-axis direction into up and down.

[0047] Example

[0048] This embodiment provides an energy storage converter module, the core improvement of which lies in the layout of the front of the module, in order to improve the problem of inconvenient maintenance of the fuse 50.

[0049] The energy storage converter module mainly includes a housing 10, a fixing component 20 disposed within the housing 10, an electrical connection unit 30, a circuit breaker 40, and a fuse 50, as well as a front panel assembly 60 mounted on the front end of the housing 10. A dedicated maintenance window 12 is provided on the housing 10, with the fuse 50 positioned directly opposite this window. This allows maintenance personnel to replace the fuse 50 from the front of the module without removing the module cover or moving the entire module when it is installed in the cabinet like a drawer. The operating shaft 42 of the circuit breaker 40 extends to the front and is controlled by an operating handle 62 on the front panel assembly 60, achieving front-end integration of the operation and maintenance interface.

[0050] To ensure the core functions of the energy storage converter module, in addition to the components specifically described in this invention, its housing 10 typically integrates other electrical components known in the art, such as power conversion units, capacitor units, and inductor units. These electrical components are connected according to known topologies and electrical connections to form a complete energy storage converter unit with basic converter functions. The electrical connections, functional configurations, and layout of these components within the housing 10 are common technologies in the field of energy storage converter technology. The overall layout and internal interconnections of this part are not the focus of this invention's improvement.

[0051] The innovation of this invention does not lie in changing all the aforementioned known electrical components and their basic connections, but rather in the redesign of the installation, connection, and maintenance methods for the specific protective element, fuse 50, and its integration with the operating interface (front panel assembly 60). The technical solution provided by this invention can work collaboratively with existing standard components such as power conversion units and capacitor units, significantly improving the overall maintainability of the module without altering its basic functions and internal connection logic.

[0052] For clarity, after the module is installed, its direction toward the operator is defined as "front" or "forward" (corresponding to the positive Y-axis direction), its height direction is the up-down direction (corresponding to the Z-axis direction), and its horizontal direction, which is perpendicular to both the Y-axis and Z-axis, is the left-right direction (corresponding to the X-axis direction).

[0053] See Figure 1 , Figure 1 A schematic diagram of the energy storage converter module of this embodiment is shown; the energy storage converter module has a housing 10. See also Figure 2 , Figure 2 An exploded perspective view of the energy storage converter module of this embodiment is shown. The front end of the housing 10 along the Y-axis has a first sidewall 11. A maintenance window 12 is formed on the first sidewall 11. The maintenance window 12 is a through hole that penetrates the first sidewall 11, forming a channel for the fuse 50 to enter and exit.

[0054] See Figure 2 The fastener 20 is fixed inside the housing 10. Figure 2 In this circuit breaker 40, the fastener 20 is located along the Y-axis between the body 41 and the maintenance window 12. The fastener 20 is positioned close to the maintenance window 12. (See also...) Figure 3-5 , Figure 3 The diagram shows a front view of the energy storage converter module of this embodiment. On the first sidewall 11, in addition to the maintenance window 12, multiple connection terminals 31 serving as DC input and AC output are densely arranged. The outline of the front panel 61 is specially designed so that when it is fastened to the first sidewall 11, it precisely covers the maintenance window 12 and avoids all surrounding connection terminals 31, ensuring that the two do not interfere mechanically. Furthermore, during the rotation of the rotating part 64 of the operating handle 62 around the Y-axis to drive the operating shaft 42, its entire rotation trajectory maintains a safe distance from all connection terminals 31 in space, without any interference. This allows for safe and smooth opening and closing operations even with an extremely compact front panel layout. See also... Figure 4 , Figure 4 It shows Figure 3 sectional view, Figure 5 This further demonstrates Figure 3 See the enlarged schematic diagram of the middle fixing member 20. Figure 5 The fastener 20 has an insulating mounting portion 21 on the side facing the maintenance window 12. This insulating mounting portion 21 serves as the main mounting base for the fuse 50. Specifically, the insulating mounting portion 21 may be formed with a support surface 211 for supporting the fuse 50 along the Z-axis direction. Further, the fastener 20 may also have an insulating limiting wall 22 on the opposite side (e.g., above) of the support surface 211, which is opposite to the support surface 211 along the Z-axis direction. The insulating limiting wall 22 is adapted to abut against the side of the fuse 50 away from the support surface 211, thereby cooperating with the support surface 211 to limit the fuse 50 in the Z-axis direction. The fastener 20 is preferably made of an insulating material, such as engineering plastic, to ensure electrical safety and ease of processing. The fastener 20 may be designed as a modular structure, with its insulating mounting portion 21 and insulating limiting wall 22 detachably connected to the fastener body. By replacing the insulating mounting parts 21 with different support surface spacing or limiting structures, fuses 50 of different brands, models, or specifications (length, diameter) can be installed, enhancing the versatility and flexibility of this module. See also Figure 5 The fastener 20 (or its insulating mounting portion 21) may have an insulating positioning groove 23 on the side opposite to the maintenance window 12 for the passage of the first terminal block 32 described below, see [link to documentation]. Figure 7 , Figure 7 A schematic diagram of the fastener 20, fuse 50 and electrical connector of this embodiment is shown; the insulating positioning groove 23 extends and passes through along the X-axis to position the first terminal block 32.

[0055] The electrical connection unit 30 includes a connection terminal 31 embedded in the first sidewall 11 and an electrical connector electrically connected to the connection terminal 31. See also... Figure 6 , Figure 6 A schematic diagram of the circuit breaker 50, the fixing member 20, the fuse 50, the operating handle 62 and the electrical connector of this embodiment is shown. The electrical connector is provided with a first terminal 321 and a second terminal 331 extending to the front space of the insulating mounting portion 21 of the fixing member 20.

[0056] In one specific embodiment, the electrical connector includes a first terminal block 32 and a second terminal block 33. The first terminal block 32 is provided with a first terminal 321, and the second terminal block 33 is provided with a second terminal 331. The first terminal 321, the second terminal 331, and the connecting terminal 31 are preferably arranged sequentially along the X-axis direction.

[0057] See Figure 2 The circuit breaker 40 is housed within the housing 10. The circuit breaker 40 includes a body 41 and an operating shaft 42. See also... Figure 6 The main body 41 is connected in series with an electrical connector, for example, in series with the second terminal block 33. A connection port 411 may be provided on the side of the main body 41 near the connection terminal 31, and the connection port 411 is connected in series with the second terminal block 33. An operating shaft 42, extending along the Y-axis, is used to drive the main body 41 to open and close the circuit breaker 40.

[0058] The fuse 50 is the core maintenance component of this invention. The fuse 50 is adapted to be detachably fixed to the insulating mounting portion 21 of the fixing member 20 and the first terminal 321 and the second terminal 331 of the electrical connector along the Y-axis direction. This means that the fuse 50 is located not only on the front side of the fixing member 20, but also on the front side of the first terminal 321 and the second terminal 331. Specifically, the fuse 50 has a first end 51 and a second end 52, which are preferably arranged along the X-axis direction. During installation, the fuse 50 sits on the support surface 211 of the fixing member 20, and its first end 51 and second end 52 are locked to the first terminal 321 and the second terminal 331 respectively by fasteners such as bolts. After installation, the fuse 50 is located entirely on the front side of the insulating mounting portion 21, and also on the front side of the first terminal 321 and the second terminal 331, and is suitable for removal and installation from the front end of the fixing member 20 through the maintenance window 12. The fuse 50 is arranged in the Z-axis direction with the operating axis 42 of the circuit breaker 40, and the two are spatially offset and do not interfere with each other. Figure 6 In the middle, the operating shaft 42 is located above the fuse 50.

[0059] See Figure 2The front panel assembly 60 is used to close the maintenance window 12 and provide an operating interface. It includes a front panel 61 and an operating handle 62. The front panel 61 covers the maintenance window 12 and is detachably mounted to the first side wall 11. In this embodiment, the front panel assembly 60 is detachably locked to the first side wall 11 of the housing 10 by fasteners (such as screws). This design achieves complete separation between the front panel 61 and the housing 10. It should be understood that the above-mentioned "completely detachable locking" is only a preferred example of the connection method between the front panel 61 and the housing 10, and not a limitation of the present invention. Based on the same concept, the connection relationship between the front panel 61 and the housing 10 can have other equivalent or modified implementations. For example, in another implementation, the front panel 61 can be designed as a flip-top structure. One side of the front panel 61 (e.g., the upper side, the lower side, or one side) can be rotatably connected to the first side wall 11 by a hinge, pivot, or other rotatable connecting component, so that the other side of the front panel 61 can be opened or closed relative to the housing 10. The operating handle 62 is connected to the front panel 61. Specifically, the front panel 61 may be provided with a through hole 611. See also Figure 5 The operating handle 62 includes a fixed portion 63 and a rotating portion 64. The fixed portion 63 is fixed to the front panel 61 at the edge of the through hole 611. The rotating portion 64 is rotatably connected to the fixed portion 63 about an axis extending along the Y-axis. The rotating portion 64 is adapted to engage with the operating shaft 42 of the circuit breaker 40 in a non-rotational engagement. Exemplarily, the rotating portion 64 typically has an engagement portion whose shape matches the cross-sectional shape of the front end (operating end) of the operating shaft 42, forming a non-rotational fit. For example, the front end of the operating shaft is typically constructed as a non-cylindrical shape, such as a square shaft, a hexagonal shaft, or a splined shaft. Correspondingly, the engagement portion of the rotating portion has a complementary square hole, hexagonal hole, or splined hole. When the rotating portion is fitted into the operating shaft, the non-circular cross-sections of the two fit together, allowing the rotating portion to drive the operating shaft to rotate synchronously without slippage during rotation, thereby achieving reliable opening and closing operations of the circuit breaker. This shape-matched anti-rotation plug structure not only ensures effective transmission of operating torque but also facilitates rapid axial alignment and separation during front panel assembly and disassembly. When the front panel assembly 60 is in place, rotating the rotating part 64 of the operating handle 62 will drive the operating shaft 42 to rotate, thereby controlling the opening and closing of the circuit breaker 40. The operating handle 62 and the operating shaft 42 are detachably connected; this connection automatically disengages when the front panel 61 is removed.

[0060] When it is necessary to replace fuse 50, the procedure is as follows:

[0061] By operating the handle 62 to disconnect the power to the circuit breaker 40, and after ensuring that the module is de-energized, remove the fasteners that secure the front panel 61, pull the handle 62 forward, and remove the entire front panel assembly 60. At this time, the handle 62 is separated from the operating shaft 42 of the circuit breaker 40, and the maintenance window 12 is fully exposed.

[0062] Next, through maintenance window 12, use tools to remove the bolts that fix the first end 51 and the second end 52 of fuse 50 to the first terminal 321 and the second terminal 331, and remove the old fuse 50;

[0063] Insert the fuse 50 through the maintenance window 12, place it on the support surface 211 of the fixing member 20 and initially limit it by the insulating limiting wall 22, and fasten its first end 51 and second end 52 to the first terminal 321 and the second terminal 331 respectively with bolts. Then, align the front panel assembly 60 with the pre-assembled operating handle 62 with the maintenance window 12, so that the rotating part 64 of the operating handle 62 is fitted into the operating shaft 42 of the circuit breaker 40, and fix the front panel 61 to the first side wall 11 to complete the assembly.

[0064] Through the above process, fast and convenient maintenance of the fuse 50 can be performed from the front of the energy storage converter module without moving or disassembling the main body of the module.

[0065] In this embodiment, the direct combination of the features that "the first sidewall 11 is provided with a maintenance window 12", "the fuse 50 is suitable for being disassembled and installed from the front end of the fastener 20 through the maintenance window 12", and "the front panel 61 is covered by the maintenance window 12" creates a unified maintenance window 12 on the front panel 61 of the module that integrates the operation of the circuit breaker 40 and the maintenance of the fuse 50, and avoids the interference between the circuit breaker 40 operating handle 62 and the fuse 50 maintenance space in the layout of the front panel 61. Maintenance personnel no longer need to search for different operating surfaces or disassemble the entire module to operate the circuit breaker 40 or replace the fuse 50. All operations can be completed through this single integrated maintenance window 12. Specifically, when the fuse 50 needs maintenance, the operator only needs to disconnect the operating handle 62 from the operating shaft 42 and open the front panel 61. The fuse 50 can then be removed through the maintenance window 12. After replacement, the new fuse 50 can be installed through the maintenance window 12. The front panel 61 can then be placed over the maintenance window 12, and the operating handle 62 can be fixed to the operating shaft 42. This allows maintenance personnel to access and replace the fuse 50 through a single maintenance window 12 at the front of the module, even when the energy storage converter module is installed in a drawer-type configuration in the cabinet. This greatly simplifies the maintenance path and directly improves the convenience of maintenance operations.

[0066] The fastener 20 also ensures that the rear sides of the first terminal 321 and the second terminal 331 are supported by the insulating mounting part 21 during the installation and removal of the fuse 50, preventing damage. Furthermore, the operating handle 62 is detachably fixed to the operating shaft 42. When the maintenance window 12 needs to be opened, the operating handle 62 can be used as a handle for the front panel 61, facilitating the operator's application of force. During the installation of the front panel 61, since the circuit breaker 40 is fixed relative to the housing 10, the detachable connection between the operating handle 62 and the operating shaft 42 guides and positions the front panel 61. This allows the operating handle 62 to function as a control switch for the circuit breaker 40, as well as a handle and positioning component for the front panel 61, achieving multiple uses and improving the feel and precision of the cover installation and removal.

[0067] In this embodiment, the first end 51 and the second end 52 are arranged along the X-axis direction, and the operating shaft 42 and the fuse 50 are arranged along the Z-axis direction, so that the length direction of the fuse 50 is consistent with the width direction of the module. This is beneficial to reserve sufficient and non-interfering installation space for the fuse 50 and the operating handle 62 within the limited height (Z-axis) and width (X-axis) space of the module. It also realizes that the fuse 50 support surface 211 and the circuit breaker 40 operating surface are spatially staggered within the compact front panel 61 area, avoiding mutual interference between the two during disassembly, assembly and maintenance, and improving the space utilization and layout rationality of the front panel 61.

[0068] In this embodiment, the fixing member 20 is provided with a support surface 211 for supporting the fuse 50 along the Z-axis direction, which improves the stability and positional accuracy of the fuse 50 installed inside the module, and ensures accurate alignment and reliable connection between the fuse 50 and the first terminal 321 and the second terminal 331 of the electrical connector, thereby improving the stability of the electrical connection.

[0069] In this embodiment, the support surface 211 and the insulating limiting wall 22 together form a structure that clamps or limits the fuse 50 in the Z-axis direction, effectively preventing the fuse 50 from loosening or jumping perpendicular to the support surface 211 during module transportation, installation, or vibration. This further enhances the mechanical reliability of the fuse 50 installation and the stability of the electrical connection. In addition, the fuse 50 can be initially positioned during installation.

[0070] In this embodiment, the fixing member 20 is located between the body 41 and the opening along the Y-axis, making it possible to perform maintenance on the fuse 50 and operation on the circuit breaker 40 sequentially from the opening inwards on the front panel 61, with clear spatial hierarchy. The anti-rotation plug-in connection between the operating handle 62 and the operating shaft 42 provides a direct, reliable, and easy-to-install force transmission method, enabling direct and reliable opening and closing control of the circuit breaker 40 located inside the module through the front panel assembly 60. Simultaneously, it ensures that the operating handle 62 can be easily separated from the circuit breaker 40 when disassembling the front panel 61 for fuse 50 maintenance, improving the modularity and maintainability of the front panel assembly 60. The plug-in structure between the operating handle 62 and the operating shaft 42 also serves as a good guide and positioning mechanism, further enhancing the multi-functionality of the operating handle 62.

[0071] In this embodiment, the first terminal 321, the second terminal 331, and the connecting terminal 31 are arranged sequentially along the X-axis direction, and the body 41 of the circuit breaker 40 is connected in series on the second terminal block 33, so that the wiring is clear and orderly and the electrical layout inside the module is optimized.

[0072] In this embodiment, the fixing member 20 is provided with an insulating positioning groove 23 for the first terminal block 32 to pass through. During assembly, this groove allows for quick and accurate positioning of the first terminal block 32, limiting its displacement in the X and Z axes. This ensures that the first terminal 321 on the terminal block is precisely aligned and reliably connected to the fuse 50, contributing to the stability of the electrical connection during long-term operation. Furthermore, this design minimizes the positional change of the first terminal block 32 after the fuse 50 is removed, improving assembly efficiency.

[0073] In this embodiment, the main body 41 is provided with a connection port 411 on the side near the connection terminal 31, so that the wiring port of the circuit breaker 40 faces the module, i.e. the connection terminal 31 side, which shortens the current path from the connection terminal 31 to the circuit breaker 40, making the second wiring block 33 direct, compact, and the internal space more tidy.

[0074] In this embodiment, the rotating part 64 and the fixed part 63 are rotatably connected about an axis extending along the Y-axis and are adapted to be anti-rotatedly plugged into the operating shaft 42, providing the user with a circuit breaker 40 control interface that conforms to operating habits and is convenient for applying force. The rotating connection method makes the opening and closing operations smooth and effortless, while the anti-rotation plugging structure ensures that the operating torque is reliably transmitted to the circuit breaker 40, and at the same time, it facilitates the overall disassembly of the front panel 61 as mentioned above.

[0075] In this embodiment, the fastener 20 is made of insulating material, providing reliable electrical isolation between the fuse 50 and its live parts and the grounded metal housing 10, improving the electrical safety of the module and making it easy to process.

[0076] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. An energy storage converter module, characterized in that, include: The housing (10) has a first sidewall (11) at its front end along the Y-axis direction, and the first sidewall (11) has a maintenance window (12); The fastener (20) is fixed inside the housing (10) and has an insulating mounting part (21) facing the maintenance window (12); The electrical connection unit (30) includes a connection terminal (31) embedded in the first sidewall (11) and an electrical connector electrically connected to the connection terminal (31). The electrical connector has a first terminal (321) and a second terminal (331) located on the front side of the insulating mounting part (21). A circuit breaker (40) is connected in series with an electrical connector within a housing (10) and has an operating shaft (42); A fuse (50) is adapted to be detachably fixed to an insulating mounting portion (21), a first terminal (321) and a second terminal (331) along the Y-axis and adapted to be removed from the front end of the fixture (20) through the maintenance window (12); and A front panel assembly (60) includes a front panel (61) and an operating handle (62) connected to the front panel (61), the front panel (61) covering the maintenance window (12), and the operating handle (62) being adapted to be detachably fixed to the operating shaft (42) to drive the circuit breaker (40) to open and close. On the first sidewall (11), there are also a plurality of input terminals and output terminals serving as the main circuit of the module; the outline of the front panel (61) is configured to avoid the input terminals and output terminals when it is covered on the maintenance window (12), and the rotation trajectory of the operating handle (62) does not interfere with the input terminals, output terminals and the connection terminal (31).

2. The energy storage converter module as described in claim 1, characterized in that, The fuse (50) has a first end (51) and a second end (52) that are respectively fixed to the first terminal (321) and the second terminal (331). The first end (51) and the second end (52) are arranged along the X-axis direction. The operating shaft (42) is arranged along the Z-axis direction with the fuse (50).

3. The energy storage converter module as described in claim 2, characterized in that, The fastener (20) is provided with a support surface (211) for supporting the fuse (50) along the Z-axis direction.

4. The energy storage converter module as described in claim 3, characterized in that, The fixing member (20) is also provided with an insulating limiting wall (22) opposite to the support surface (211) along the Z-axis direction. The insulating limiting wall (22) is adapted to abut against the side of the fuse (50) away from the support surface (211).

5. The energy storage converter module as described in claim 1, characterized in that, The circuit breaker (40) includes a body (41) connected in series with an electrical connector. The operating shaft (42) is used to drive the body (41) to open and close the circuit breaker (40). The fixing member (20) is located between the body (41) and the maintenance window (12) along the Y-axis. The operating shaft (42) extends along the Y-axis, and the operating handle (62) is inserted into the operating shaft (42) to prevent rotation.

6. The energy storage converter module as described in claim 5, characterized in that, The electrical connector includes a first terminal block (32) and a second terminal block (33). The first terminal block (32) is provided with a first terminal (321), and the second terminal block (33) is provided with a second terminal (331). The first terminal (321), the second terminal (331) and the connecting terminal (31) are arranged sequentially along the X-axis. The body (41) is connected in series on the second terminal block (33).

7. The energy storage converter module as described in claim 6, characterized in that, The fastener (20) has an insulating positioning groove (23) on the side opposite to the maintenance window (12) for the first terminal block (32) to pass through. The insulating positioning groove (23) extends and penetrates along the X-axis.

8. The energy storage converter module as described in claim 6, characterized in that, The main body (41) has a connection port (411) on the side near the connection terminal (31), and the connection port (411) is connected in series to the second terminal block (33).

9. The energy storage converter module as described in claim 5, characterized in that, The front panel (61) is provided with a through hole (611); the operating handle (62) includes a fixed part (63) and a rotating part (64). The fixed part (63) is fixed to the front panel (61) at the edge of the through hole (611). The rotating part (64) and the fixed part (63) are rotatably connected about an axis extending along the Y-axis and are adapted to be inserted into the operating shaft (42) to prevent rotation.

10. The energy storage converter module as described in claim 1, characterized in that, The fastener (20) is made of insulating material.

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