Integrated fuse protector protection device

Abstract

The utility model provides an integrated fuse protector, which comprises a protective integrated shell, the protective integrated shell comprises an upper shell and a lower shell which are connected into a whole, the protective integrated shell is sealed through a buckle, and a cavity is formed in the middle of the protective integrated shell and is used for placing a fuse; a heat dissipation structure is arranged on the top face of the upper shell, and fan heat dissipation devices are arranged on the two opposite side faces of the upper shell. In the lower shell, two insulating columns with threaded hole positions are arranged at the two opposite ends respectively, and the fuse is located between the two insulating columns. According to the integrated fuse protector, through the design of combining the heat dissipation structure and the fan heat dissipation equipment, the heat dissipation efficiency of the fuse is improved, and through the integrated design, the use of parts is reduced, and the product yield is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuses, and relates to a protective device for assembling and disassembling fuses, in particular to an integrated fuse protective device. Background Art

[0002] A fuse is an electrical component installed in a circuit to ensure the safe operation of the circuit. The working principle of a fuse is: when the fuse is connected in series to the protected circuit, when the current in the circuit abnormally rises to a certain height for a period of time, the heat generated by the fuse itself will melt the fuse element, disconnecting the protected circuit, thereby playing a role in circuit protection and preventing certain important components from being damaged.

[0003] The fuse is an overcurrent protector in the new energy storage PACK. When in use, the fuse is connected in series in the protected circuit, which can disconnect the circuit after the current is overloaded for a certain period of time, thereby effectively protecting the safety of the battery modules and other devices in the PACK. Due to safety considerations such as insulation, the fuse is generally installed in a fuse box, which is convenient for connection to the main circuit and also convenient for replacement of the fuse. The existing technology generally relies on the heat dissipation of the fuse itself, but as the use time of the enclosed fuse increases, the internal heat continues to accumulate and cannot be effectively discharged, which will cause the fuse to misjudge, resulting in the circuit being disconnected, causing electricity troubles and increasing maintenance and replacement costs.

[0004] CN108666187A discloses a miniaturized fuse box, which includes a base, an upper cover and a rear protective cover. The base includes a hollow part for accommodating the fuse and conductive base blocks respectively arranged on the outer sides of the two ends of the hollow part. A transfer bar with a U-shaped structure is placed on the conductive base block to connect the fuse and the external circuit copper bar. The fuse is installed and fixed by setting a flat plate structure extending outward. Heat sinks are set on the base and the upper cover for heat dissipation. The overall structure is sealed by setting sealing rings on the base and the flat plate structure. The shortcomings of this patent are: there is only a separate heat dissipation structure, which relies on its own heat dissipation, the heat dissipation efficiency is not high, the structure is complex, the upper and lower covers are designed separately, and it cannot be integrally formed in terms of process. There are many parts such as transfer bars and screws, which increase the production cost and are not convenient for installation and disassembly.

[0005] CN111554550A discloses a fuse mounting seat, which includes a plug, a fuse and a base for placing the fuse, and the terminal of the fuse is connected to the plug, and the two ends of the plug are respectively arranged inside and below the base, and a flange with a sealing ring and a sealing gasket are arranged on the base to seal the overall structure. The shortcomings of this patent are: there is no heat dissipation design, the closed-type fuse will cause the circuit to be disconnected due to the long operation time and the increase of the operating temperature, and the fuse will be accidentally broken, which will affect the use, the upper cover and the base are designed separately, and the upper cover and the base are all locked with screws, the structure is complicated, and the installation process is cumbersome.

[0006] CN216980487U discloses a fuse base, which includes an upper shell and a lower shell, the fuse is installed between the upper and lower shells, the upper and lower shells are connected by buckles and slots, and the upper shell is provided with external holes corresponding to one side in the X direction and two sides in the Y direction, each external hole is fixedly connected with a baffle that can be broken, and heat is dissipated through the heat dissipation holes on the clamping boss. The shortcomings of this patent are: there are only separate heat dissipation holes, the heat dissipation depends on the fuse box itself, the heat dissipation efficiency is not high, there is no sealing design, the dust and water resistance effect is not good, and the protection level is not high.

[0007] It can be seen that the existing technical solutions have the following disadvantages: (1) the fuse installation device has no heat dissipation structure or only has a separate heat dissipation structure, and the heat generated by the fuse cannot be effectively dissipated; (2) the protective cover and the base are designed separately and cannot be integrally formed in terms of process; (3) the base is fixed to the mounting bracket by bolts, which is inconvenient to disassemble; (4) the existing technical solutions have a complex structure, use many parts, are prone to missing, increase production costs, are inconvenient to install and disassemble, and take a long time at a single station.

[0008] In summary, in view of the shortcomings of the fuse protection device in the prior art when in use, it is urgent to develop an integrated fuse protection device suitable for use in the new energy storage PACK. Utility Model Content

[0009] In view of the deficiencies in the prior art, the utility model provides an integrated fuse protection device, including an integrated protection shell, the integrated protection shell including an upper shell and a lower shell connected as one, the integrated protection shell is closed by a buckle to form a cavity in the middle for accommodating the fuse; a heat dissipation structure is arranged on the top surface of the upper shell, and a fan heat dissipation device is arranged on the two opposite sides of the upper shell; inside the lower shell, two insulating columns with threaded holes are respectively arranged at opposite ends, and the fuse is located between the two insulating columns. The integrated fuse protection device of the utility model improves the heat dissipation efficiency of the fuse itself through the design of combining the heat dissipation structure and the fan heat dissipation device, and through the integrated design, reduces the use of parts and improves the product yield.

[0010] To achieve this purpose, the utility model adopts the following technical solutions:

[0011] The object of the present invention is to provide an integrated fuse protection device, comprising an integrated protection shell, wherein the integrated protection shell comprises an upper shell and a lower shell connected as one body, wherein the upper shell and the lower shell are provided on one side and sealed and connected as one body, and matching buckles are provided on the upper shell and the lower shell on the other side, wherein the integrated protection shell is closed by the buckles and a cavity is formed in the middle for placing the fuse;

[0012] A heat dissipation structure is arranged on the top surface of the upper shell, and fan heat dissipation devices are arranged on two opposite side surfaces of the upper shell;

[0013] Inside the lower shell, two insulating columns with threaded holes are respectively arranged at two opposite ends, and the fuse is located between the two insulating columns.

[0014] The integrated fuse protection device of the utility model, on the one hand, improves the heat dissipation efficiency of the fuse itself through the design of combining the heat dissipation structure and the fan heat dissipation device, and solves the problem of poor heat dissipation effect of the fuse in the prior art. On the other hand, through the integrated design, it solves the problems of the prior art that the upper and lower covers and the base are designed separately, the process cannot be integrated, there are many parts, the process is cumbersome, it is easy to miss the assembly, and the single station takes a long time, thereby reducing the use of parts and improving the product yield.

[0015] It should be noted that the integrated fuse protection device described in the utility model can seal and connect the upper shell and the lower shell into one by continuous indentations, changing the traditional design of the upper and lower covers and the base separately, and designing an integrated fuse protection device. The snap-on design is convenient for sealing installation and disassembly, reduces the use of parts, reduces production costs, and improves product yield. Moreover, insulating columns are provided at both ends of the lower shell of the protective cover, and pre-tapped threaded holes are provided on the insulating columns to facilitate the connection between the fuse contact knife and the external copper busbar.

[0016] As a preferred technical solution of the present invention, two external quick-plug buckles are respectively arranged at two opposite ends on the outside of the lower shell.

[0017] It should be noted that the utility model provides external quick-insert clips at both ends of the outside of the lower shell body, which, combined with the counterpart installed on the fixed bracket, can not only install the protective integrated shell on the fixed bracket, but also facilitate direct removal of the protective integrated shell when installing and disassembling the protective integrated shell, which is convenient and quick, and improves the installation and disassembly efficiency of the integrated fuse protection device.

[0018] As a preferred technical solution of the utility model, the heat dissipation structure includes double-layered shutters, and the first layer and the second layer of the double-layered shutters are staggered so that the double-layered shutters have gaps in the up and down directions.

[0019] It should be noted that the heat dissipation structure described in the utility model is preferably a double-layer shutter structure with a staggered design, including multiple blades with a Z-shaped cross-section, so that the double-layer shutter has a first layer and a second layer parallel to each other, and the interval gaps of the first layer are blocked by the second layer, so that the double-layer shutter has gaps in the upper and lower directions, and has good dustproof and waterproof effects. In addition, the fan heat dissipation device can cool the fuse and speed up the air circulation inside the box. The combination of the two designs improves the overall heat dissipation effect.

[0020] As a preferred technical solution of the present invention, a dustproof net is provided on the outer side of the fan heat dissipation device to improve the dustproof effect.

[0021] As a preferred technical solution of the utility model, a layer of raised enclosure is provided on the upper edge of the lower shell body, the height of the raised enclosure is smaller than the height of the upper shell body, and a circle of sealing gasket is provided on the bottom edge of the raised enclosure.

[0022] It should be noted that when the upper shell and the lower shell of the utility model are covered, the upper shell will squeeze the sealing gasket to form a sealing layer, and utilize the double sealing protection of the raised enclosure and the sealing gasket to improve the overall sealing of the protective device, improve the protection level of the protective device, and achieve dustproof and waterproof effects.

[0023] As a preferred technical solution of the utility model, a copper busbar connection hole is opened at the front and rear ends of the lower shell on the side opposite to the buckle, and a pullable movable window is provided on the copper busbar connection hole.

[0024] It should be noted that the utility model is designed with movable windows that can be pulled left and right at both ends of the lower shell. The movable windows can control the opening and closing of the copper busbar connection hole, and the external copper busbar can be connected to the fuse contact knife at two different positions.

[0025] As a preferred technical solution of the utility model, the insulating column is a cross-shaped insulating column, and reinforcing ribs are arranged around the cross-shaped insulating column to meet the requirements of ensuring the structural strength and stability under vibration conditions.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] (1) The integrated fuse protection device of the utility model has a simple structure and uses fewer parts. The integrated design solves the problems of the prior art that the upper and lower covers and the base are designed separately, the process cannot be integrated, there are many parts, the process is cumbersome, it is easy to miss the installation, and the single station takes a long time. The use of parts is reduced and the product yield is improved;

[0028] (2) The integrated fuse protection device of the utility model can dissipate the heat generated by the fuse in time through the design of combining the heat dissipation structure and the fan heat dissipation device, thereby ensuring the good operation of the fuse, extending the service life of the fuse, improving the heat dissipation efficiency of the fuse itself, and solving the problem of poor heat dissipation effect of the fuse in the prior art;

[0029] (3) The integrated fuse protection device of the utility model is based on an integrated design and an external quick-plug buckle design, which facilitates the disassembly and installation between the protective integrated shell and the fixed bracket, thereby reducing the workload of installation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of an integrated fuse protection device provided by the utility model;

[0031] Figure 2 yes Figure 1 A partial enlarged view of the circled part;

[0032] Figure 3 A top view of the structure of an integrated fuse protection device provided by the utility model after opening;

[0033] Figure 4 A structural side view of an integrated fuse protection device provided by the utility model after opening;

[0034] Figure 5 A front view of an integrated fuse protection device provided by the utility model;

[0035] Among them, 1-protective integrated shell, 2-upper shell, 3-lower shell, 4-clip, 5-raised enclosure, 6-sealing gasket, 7-copper busbar connection hole, 8-sliding window, 9-double-layer shutter, 10-first layer, 11-second layer, 12-cross-shaped insulating column, 13-threaded hole, 14-screw, 15-reinforcement rib, 16-fuse, 17-external quick-plug clip, 18-fan cooling device, 19-dustproof net. DETAILED DESCRIPTION

[0036] In order to make the technical solution, purpose and advantages of the utility model clearer, the utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For the electrical and communication fields, it can be a wired connection or a wireless connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] Combination Figures 1 to 5The utility model provides a technical solution, an integrated fuse protection device, including an integrated protection shell 1, the integrated protection shell 1 is made of insulating material, the integrated protection shell 1 includes an upper shell 2 and a lower shell 3 connected as one, the upper shell 2 and the lower shell 3 are sealed and connected as one on one side, specifically through continuous indentation, and the upper shell 2 and the lower shell 3 are respectively provided with matching buckles 4 on the other side, the integrated protection shell is closed by the buckle 4 and a cavity is formed in the middle to accommodate the fuse 16; a buckle is provided in the middle part of the side of the upper shell 2, and a slot corresponding to the buckle is provided in the middle part of the side of the lower shell 3, when the buckle 4 is in the open state, the angle between the upper shell 2 and the lower shell 3 can be changed from 0 to 180 degrees;

[0040] A heat dissipation structure is arranged on the top surface of the upper shell 2, and the heat dissipation structure is a double-layer shutter 9, which is a double-layer shutter structure with a staggered design. The first layer 10 and the second layer 11 are parallel to each other, and the interval gap of the first layer 10 is blocked by the second layer 11, so that the double-layer shutter 9 has a gap in the upper and lower directions, which has a heat dissipation effect and is dustproof and waterproof; fan heat dissipation devices 18 are arranged on the two opposite sides of the upper shell 2, and a dustproof net 19 is arranged on the outer side of the fan heat dissipation device 18, which can improve the dustproof effect of the integrated fuse protection device. The fan heat dissipation device 18 cooperates with the double-layer shutter 9 to accelerate air circulation and improve the overall heat dissipation effect of the fuse;

[0041] Inside the lower housing 3, two cross-shaped insulating columns 12 with threaded holes 13 are respectively arranged at opposite ends, and the fuse 16 is located between the two cross-shaped insulating columns 12. The external copper busbar and the contact blade of the fuse 16 are fixed to the cross-shaped insulating column 12 by screws 14 to connect the fuse 16 to the external circuit; reinforcing ribs 15 are arranged around the cross-shaped insulating column 12 to meet the requirements of ensuring structural strength and stability under vibration conditions;

[0042] A layer of raised enclosure 5 is provided on the upper edge of the lower shell 3, the height of the raised enclosure 5 is slightly smaller than the height of the upper shell 2, and a circle of sealing gasket 6 is provided on the bottom edge of the raised enclosure 5; when the upper shell 2 and the lower shell 3 are covered, the upper shell 2 will squeeze the sealing gasket 6 to form a sealing layer, and the double sealing protection of the raised enclosure 5 and the sealing gasket 6 is utilized to improve the overall sealing of the protective device, improve the protection level of the protective device, and achieve the effect of dustproof and waterproof;

[0043] On the side opposite to the buckle 4, a copper busbar connection hole 7 is provided at the front and rear ends of the lower shell 3, and a movable window 8 that can be pulled up left and right is provided on the copper busbar connection hole 7. The movable window 8 can control the opening and closing of the copper busbar connection hole 7, and the external copper busbar can be selected to be connected to the fuse contact knife at two different positions;

[0044] On the outside of the lower shell body 3, two external quick-plug buckles 17 are respectively arranged at opposite ends, and combined with the counterpart (not shown) installed on the fixed bracket, the protective integrated shell 1 can be installed on the fixed bracket, and the protective integrated shell 1 can be directly removed when installing and disassembling. No bolts are required for installation and disassembly, which is convenient and quick, thereby improving the installation and disassembly efficiency of the integrated fuse protection device.

[0045] Combination Figures 1 to 5 The utility model provides an installation step of an integrated fuse protection device, including the following contents: The integrated fuse protection device is installed at the position where the fuse is required to be installed in the PACK. First, stick the sealing gasket on the raised enclosure of the lower shell of the protective integrated shell, install the integrated fuse protection device on the fixed bracket through an external quick-plug buckle, select two copper busbar connection holes, open the corresponding movable windows, and fix the two contact knives of the fuse to the corresponding external copper busbars on the cross insulating columns through screws, and the movable window on the side where the copper busbar is not connected is in a closed and sealed state. The upper shell and the lower shell are sealed and connected by buckles. Attach the two dustproof nets to the outside of the fan cooling device accordingly. At this point, the installation is completed.

[0046] The integrated fuse protection device described in the utility model has a simple structure and uses fewer parts. Through integrated design, it solves the problems of the prior art that the upper and lower covers and the base are designed separately, the process cannot be integrated, there are many parts, the process is cumbersome, it is easy to miss the installation, and the single station takes a long time. The use of parts is reduced and the product yield is improved. The integrated fuse protection device described in the utility model can dissipate the heat generated by the fuse in time through the design that combines the heat dissipation structure and the fan heat dissipation device, thereby ensuring the good operation of the fuse, extending the service life of the fuse, and improving the self-heating efficiency of the fuse, solving the problem of poor heat dissipation effect of the fuse in the prior art. The integrated fuse protection device described in the utility model is based on the integrated design and the external quick-plug buckle design, which is convenient for the disassembly and installation between the protective integrated shell and the fixed bracket, and reduces the work intensity of the installation and maintenance personnel.

[0047] The above description is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. Technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims

1. An integrated fuse protection device, characterized in that: The protective integrated shell comprises an upper shell and a lower shell connected as one body, the upper shell and the lower shell are sealed and connected as one body on one side, and matching buckles are respectively provided on the upper shell and the lower shell on the other side, and the protective integrated shell is closed by the buckles to form a cavity in the middle for accommodating a fuse; A heat dissipation structure is arranged on the top surface of the upper shell, and fan heat dissipation devices are arranged on two opposite side surfaces of the upper shell; Inside the lower shell, two insulating columns with threaded holes are respectively arranged at two opposite ends, and the fuse is located between the two insulating columns.

2. The integrated fuse protection device according to claim 1, characterized in that: On the outside of the lower shell, two external quick-insert buckles are respectively arranged at two opposite ends.

3. The integrated fuse protection device according to claim 1 or 2, characterized in that: The heat dissipation structure comprises a double-layered louver, wherein a first layer and a second layer of the double-layered louver are arranged in a staggered manner, so that a gap is left in the double-layered louver in the up and down directions.

4. The integrated fuse protection device according to claim 1 or 2, characterized in that: A dustproof net is arranged on the outer side of the fan heat dissipation device.

5. The integrated fuse protection device according to claim 1 or 2, characterized in that: A layer of raised enclosure is arranged on the upper edge of the lower shell body, the height of the raised enclosure is smaller than the height of the upper shell body, and a circle of sealing gasket is arranged on the bottom edge of the raised enclosure.

6. The integrated fuse protection device according to claim 1 or 2, characterized in that: On the side opposite to the buckle, copper bar connection holes are opened at the front and rear ends of the lower shell, and a movable window that can be pulled up is arranged on the copper bar connection hole.

7. The integrated fuse protection device according to claim 1 or 2, characterized in that: The insulating column is a cross-shaped insulating column, and reinforcing ribs are arranged around the cross-shaped insulating column.

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