Fuse assembly in liquid-cooled battery plug-in box and liquid-cooled battery plug-in box

Abstract

The utility model provides a liquid-cooled battery subrack and a fuse assembly in the liquid-cooled battery subrack, the fuse assembly comprises a fuse support, a direct current fuse and a PC insulating sheet, the bottom of the right side of the direct current fuse is pressed into a fuse upper opening copper bar and then is detachably and fixedly connected to one side of the fuse support through a bolt, and the other side of the fuse support is fixedly connected with the PC insulating sheet. The bottom of the left side of the direct-current fuse is pressed into a fuse lower opening copper bar and then detachably and fixedly connected to the other side of the fuse support through bolts, an insulating cap is pressed into a bolt head of each bolt, and a gap used for installing a PC insulating sheet in the horizontal direction is reserved between the bottom of the direct-current fuse and the fuse support. The fuse assembly can be installed in the liquid-cooled battery plug-in box, is simple in structure, is safe and firm, is convenient to disassemble and assemble, can be maintained from the front end of the liquid-cooled battery plug-in box, and prevents the upper cover of the battery plug-in box from being repeatedly disassembled and assembled. Equipment damage caused by faults such as overcurrent and short circuit can be effectively avoided, and the safety of the battery cell is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery plug -in box technical field especially relates to a liquid cooling battery plug -in box in fuse assembly and liquid cooling battery plug -in box. BACKGROUND

[0002] Battery plug -in box is by battery monomer through CCS component (battery module collection integrated spare) and copper row series connection composition. Energy storage system is through high pressure series -parallel connection mode to several battery plug -in boxes and expands pressure, and through the current collecting equipment access PCS DC side, electrochemical energy storage system in daily work wants to carry out charge -discharge operation to the battery cell, due to equipment failure can cause system overcurrent and short circuit, so need to carry out electrical protection to internal high voltage equipment.

[0003] Liquid cooling battery plug -in box is connected with other equipment through high voltage plug -in panel assembly, in actual use process, the whole plug -in box will overcurrent or short circuit due to human reasons or equipment failure, therefore needs to design a fuse assembly to effectively protect the safety of the battery cell. UTILITY MODEL CONTENTS

[0004] The utility model aims at at least one of the technical problems in the related art to some extent. To this end, the utility model embodiment provides a liquid cooling battery plug -in box in fuse assembly and liquid cooling battery plug -in box, which can effectively avoid damage to the equipment caused by overcurrent and short circuit and other faults, and protect the safety of the battery cell.

[0005] The utility model discloses one aspect embodiment proposes a liquid cooling battery plug -in box in fuse assembly, include: fuse holder, DC fuse and PC insulating sheet, the fuse holder has the installation position for DC fuse;The right side bottom of DC fuse is pressed into the upper copper row of fuse after being detachably fixedly connected to one side of fuse holder through bolt, the left side bottom of DC fuse is pressed into the lower copper row of fuse after being detachably fixedly connected to the other side of fuse holder through bolt, the insulating cap is pressed into the bolt head of each bolt, and a horizontal gap for installing the PC insulating sheet is left between the bottom of DC fuse and the fuse holder;The PC insulating sheet is L type structure, including mutually fixed connection's vertical board and horizontal board, horizontal board is inserted into the gap and is detachably fixedly connected to fuse holder through snap, and vertical board covers the front end of DC fuse.

[0006] In some embodiments, the two edges of the fuse holder are respectively provided with mounting flanges for mounting the DC fuses and the copper bars, and each mounting flange is embedded with a nut.

[0007] In some embodiments, the mounting flanges are fixedly connected to the two edges of the rear part of the fuse holder, and a plurality of horizontal reinforcing ribs are fixedly connected between the two mounting flanges and arranged in the vertical direction.

[0008] In some embodiments, the fuse holder includes a bottom plate, an upper end of the bottom plate is adapted to mount the DC fuse, and a plurality of ventilation holes are formed in the bottom plate for dissipating heat from the DC fuse.

[0009] In some embodiments, the width of the transverse plate is less than the distance between the front end of the bottom plate and the mounting flange, two snap mounting holes are formed in the bottom plate, the snap mounting holes are adapted to the snaps, and the snap mounting holes are located at the front portion of the bottom plate.

[0010] In some embodiments, mounting portions are symmetrically arranged on both sides of the fuse holder, and mounting screw holes are formed in the mounting portions.

[0011] In some embodiments, the ventilation holes are in the shape of a rhombus.

[0012] In some embodiments, the nut is made of copper.

[0013] In some embodiments, the snaps are made of plastic.

[0014] The utility model discloses another aspect embodiment proposes a liquid cooling battery plug-in box, including fuse assembly of above-mentioned. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above-mentioned and / or additional aspects and advantages of the utility model will become obvious and easy to understand from the following description of embodiments in conjunction with the drawings,

[0016] Among them:

[0017] Figure 1 It is the structural schematic diagram of fuse assembly in the liquid cooling battery plug-in box in the embodiment of the utility model;

[0018] Figure 2 It is the structural schematic diagram of fuse holder in the embodiment of the utility model; Figure 1

[0019] Figure 3 It is the structural schematic diagram of liquid cooling battery plug-in box in the embodiment of the utility model;

[0020] Reference signs:

[0021] 1, liquid cooling plate; 2, battery module; 3, low-voltage communication assembly; 4, battery management unit; 5, plug-in box maintenance panel; 6, high-voltage plug-in panel assembly; 7, fuse assembly; 8, manual maintenance switch base; 9, upper cover sealing ring; 10, high-voltage plug-in panel assembly sealing ring; 11, plug-in box maintenance panel sealing ring; 12, upper cover assembly; 13, plug-in box fixing assembly;

[0022] ​71. Fuse bracket; 72. DC fuse; 73. Bolt; 74. Insulating cap; 75. Snap fastener; 76. PC insulating sheet; 77. Upper copper busbar of fuse; 78. Lower copper busbar of fuse;

[0023] 711. Mounting flange; 712. Horizontal reinforcing rib; 713. Mounting screw hole; 714. Snap-on mounting hole; 715. Ventilation hole; 716. Nut. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] The following description, with reference to the accompanying drawings, describes the fuse assembly and the liquid-cooled battery compartment of an embodiment of the present invention.

[0026] like Figures 1-2 As shown, one embodiment of this utility model proposes a fuse assembly for a liquid-cooled battery compartment, including: a fuse bracket 71, a DC fuse 72, and a PC insulating sheet 76. The fuse bracket 71 has a mounting position for the DC fuse 72. The bottom right side of the DC fuse 72 is pressed into the upper copper busbar 77 and then detachably fixed to one side of the fuse bracket 71 by bolts 73. The bottom left side of the DC fuse 72 is pressed into the lower copper busbar 78 and then detachably fixed to the other side of the fuse bracket 71 by bolts 73. An insulating cap 74 is pressed into the bolt head of each bolt 73. A horizontal gap is left between the bottom of the DC fuse 72 and the fuse bracket 71 for installing the PC insulating sheet 76. The PC insulating sheet 76 has an L-shaped structure, including a vertical plate and a horizontal plate fixedly connected to each other. The horizontal plate is inserted into the gap and is detachably fixed to the fuse bracket 71 by snap fasteners 75. The vertical plate covers the front end of the DC fuse 72.

[0027] The installation steps for fuse assembly 7 are as follows: Press the upper copper busbar 77 into the bottom right side of the DC fuse 72 and insert the bolt 73. Then, press the lower copper busbar 78 into the bottom left side and insert the bolt 73. Tighten the bolts 73 alternately with a torque wrench. Then, press the insulating cap 74 into the hexagonal bolt head of each bolt 73. Insert the PC insulating sheet 76 into the gap along the lower edge of the DC fuse 72 and fix it to the fuse bracket 71 on both sides with snaps 75. Fuse assembly 7 is connected to the entire high-voltage circuit through the upper copper busbar 77 and the lower copper busbar 78.

[0028] The fuse assembly 7 in the embodiment of the utility model can be installed in the liquid-cooled battery plug-in box, has simple structure, is safe and firm, is convenient to disassemble and assemble, can be maintained from the front end of the liquid-cooled battery plug-in box, and avoids repeatedly disassembling and assembling the upper cover of the battery plug-in box.The utility model can install 1500V, 400A direct current fuses 72, meets the safety protection requirement of 1500V system after the battery pack is connected in series, can effectively avoid the damage of equipment caused by overcurrent and short circuit and the like, and protects the safety of the battery cell.Through the setting of the insulating cap 74, the high-voltage insulation of the fuse can be effectively achieved.

[0029] In some embodiments, the two sides of the fuse holder 71 are respectively provided with mounting flanges 711 for mounting the direct current fuses 72 and copper bars, and each mounting flange 711 is respectively embedded with a nut 716, the front end surface of the nut 716 is slightly protruded from the front end surface of the mounting flange 711, and the virtual connection phenomenon can be prevented.

[0030] In some embodiments, the mounting flanges 711 are fixedly connected to the two sides of the rear part of the fuse holder 71, and a plurality of transverse reinforcing ribs 712 are fixedly connected between the two mounting flanges 711 and arranged in the vertical direction.The overall rigidity of the fuse holder 71 can be improved.

[0031] In some embodiments, the fuse holder 71 comprises a bottom plate, the upper end of the bottom plate is adapted to mount the direct current fuses 72, and a plurality of ventilation holes 715 for heat dissipation of the direct current fuses 72 are formed in the bottom plate.The cold air enters from the bottom during the operation of the equipment, carries away the heat, reduces the temperature of the direct current fuses 72, and meets the heat dissipation requirement of the direct current fuses 72.

[0032] In some embodiments, the width of the horizontal plate is less than the distance between the front end of the bottom plate and the mounting flange 711, two snap mounting holes 714 are formed in the bottom plate, the snap mounting holes 714 are adapted to the snap 75, and the snap mounting holes 714 are located at the front part of the bottom plate.

[0033] In some embodiments, the two sides of the fuse holder 71 are symmetrically provided with mounting portions, and mounting screw holes 713 are formed in the mounting portions.The fuse holder 71 can be fixed to the battery plug-in box by rotating the mounting bolts in the mounting screw holes 713.

[0034] In some embodiments, the shape of the ventilation hole 715 is a rhombus.

[0035] In some embodiments, the material of the nut 716 is copper.

[0036] In some embodiments, the material of the snap 75 is plastic.Through the setting of the plastic snap 75, the insulation distance can be increased, and the electric leakage can be prevented.

[0037] As Figure 3The utility model discloses another aspect embodiment proposes a kind of liquid cooling battery plug-in box, including fuse assembly 7 of above.

[0038] Specifically, the liquid cooling battery plug-in box comprises a liquid cooling plate 1, an upper cover assembly 12 and a battery module 2. The upper cover assembly 12 is sealingly connected to the upper end of the liquid cooling plate 1 through a plug-in box fixing assembly 13. The upper cover assembly 12 and the liquid cooling plate 1 form an installation space for installing the battery module 2 after assembly. The upper cover assembly 12 is provided with a low-voltage communication assembly 3. The side portion of the upper cover assembly 12 is provided with a first window and a second window. A plug-in box maintenance panel 5 is sealingly connected to the first window. A high-voltage plug-in panel assembly 6 is sealingly connected to the second window. The battery module 2 is arranged in the installation space. The battery module 2 is connected to a battery management unit 4, a fuse assembly 7 and a manual maintenance switch base 8. The plug-in box maintenance panel 5 is arranged close to the fuse assembly 7 and the manual maintenance switch base 8. The high-voltage plug-in panel assembly 6 is arranged close to the battery management unit 4 and away from the low-voltage communication assembly 3. An upper cover sealing ring 9 is connected to the connection between the upper cover assembly 12 and the liquid cooling plate 1. A plug-in box maintenance panel sealing ring 11 is connected to the connection between the plug-in box maintenance panel 5 and the first window. A high-voltage plug-in panel assembly sealing ring 10 is connected to the connection between the high-voltage plug-in panel assembly 6 and the second window.

[0039] In the description of the utility model, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature.

[0040] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" and other terms should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0041] In the present application, the terms "some embodiments" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments. In addition, those skilled in the art can combine and combine the different embodiments and features of different embodiments described in the present application without contradiction.

[0042] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A fuse assembly within a liquid-cooled battery interconnect enclosure, characterized by, The utility model provides a DC fuse assembly, which comprises the following components: a fuse holder, which has a mounting position for a DC fuse; a DC fuse, which is detachably fixed to one side of the fuse holder through a bolt after the right bottom of the DC fuse is pressed into an upper copper bar of the fuse and the left bottom of the DC fuse is pressed into a lower copper bar of the fuse, an insulating cap is pressed into the head of the bolt, and a gap for mounting a PC insulating sheet is left between the bottom of the DC fuse and the fuse holder in the horizontal direction; a PC insulating sheet, which has an L-shaped structure and comprises a vertical plate and a horizontal plate fixed to each other, the horizontal plate is inserted into the gap and detachably fixed to the fuse holder through a snap fastener, and the vertical plate covers the front end of the DC fuse.

2. The fuse assembly within a liquid-cooled battery cabinet of claim 1, wherein, The two sides of the fuse holder are respectively provided with mounting flanges for mounting the DC fuse and the copper bars, each mounting flange is respectively embedded with a nut, and the front end surface of the nut slightly protrudes from the front end surface of the mounting flange.

3. The fuse assembly within a liquid-cooled battery pack enclosure of claim 2, wherein, The mounting flanges are fixed to the two sides of the rear part of the fuse holder, a plurality of horizontal reinforcing ribs are fixed between the two mounting flanges and arranged in the vertical direction.

4. The fuse assembly within a liquid-cooled battery pack enclosure of claim 2, wherein, The fuse holder comprises a bottom plate, the upper end of the bottom plate is adapted to mount the DC fuse, and a plurality of ventilation holes for dissipating heat of the DC fuse are formed in the bottom plate.

5. The fuse assembly within a liquid-cooled battery pack enclosure of claim 4, wherein, The width of the horizontal plate is less than the distance between the front end of the bottom plate and the mounting flange, two snap fastener mounting holes are formed in the bottom plate, the snap fastener mounting holes are adapted to the snap fastener, and the snap fastener mounting holes are located in the front part of the bottom plate.

6. The fuse assembly within a liquid-cooled battery pack enclosure of claim 1, wherein, The two sides of the fuse holder are symmetrically provided with mounting parts, and mounting screw holes are formed in the mounting parts.

7. The fuse assembly within a liquid-cooled battery pack enclosure of claim 4, wherein, The shape of the ventilation hole is a rhombus.

8. The fuse assembly within a liquid-cooled battery pack enclosure of claim 2, wherein, The material of the nut is copper.

9. The fuse assembly within a liquid-cooled battery pack enclosure of claim 1, wherein, The material of the snap fastener is plastic.

10. A liquid-cooled battery pack, comprising: The DC fuse assembly of any one of claims 1-9.

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