CN213878012U - Accumulator positive electrode fuse box of two-way MEGA fuse - Google Patents

Abstract

The utility model provides a battery positive pole fuse box of two way MEGA fuses, including the body and locate the busbar in order to connect battery connecting piece and fuse on the body, the busbar is the form of buckling, including the portion of converging that is located the introduction portion at body top and body one side, the fuse includes first MEGA fuse, second MEGA fuse and a plurality of fuses along separate routes. The second MEGA fuse and each shunt fuse are connected to the bus bar portion, and the first MEGA fuse is connected to the lead-in portion. The utility model discloses a battery positive fuse block of two way MEGA fuses can be for the battery and the heavy current circuit between fill, discharge balance provide the fusing protection to promote the whole protective properties of battery positive fuse block.

Description

Accumulator positive electrode fuse box of two-way MEGA fuse

Technical Field

The utility model relates to an electrical apparatus protection device technical field, in particular to battery positive pole fuse block of two way MEGA fuses.

Background

The storage battery positive electrode fuse box is a junction for connecting a storage battery and electric equipment of a 12V low-voltage system of a finished automobile, and is mainly responsible for finished automobile power distribution and power supply loop fusing protection, wherein the power distribution is to transmit and distribute electric energy generated by a power supply to each electric equipment of the finished automobile, and the power supply loop fusing protection is a protection device for cutting off power supply in a specified time when load current rises to a certain value.

With the continuous development of new energy vehicles, the requirements of the new energy vehicles on the spatial arrangement are more and more strict, and the positive electrode fuse box of the storage battery cannot meet the requirements in the aspects of spatial arrangement, functions and the like. The battery needs to be connected to the front fuse box and the external charging circuit of the car, respectively, and needs to be connected to other low-power electric devices on the vehicle. Therefore, in order to improve the safety of each circuit, it is urgently necessary to arrange two large-current MEGA fuses and multiple MIDI or MINI fuses in the fuse box. However, the arrangement of a plurality of separated fuses, particularly the arrangement of two MEGA fuses having a large size, is difficult due to the space in the fuse box. And the adoption of the integrated MEGA fuse is expensive in cost, and one path of fuse can only be integrally replaced after being ablated, so that the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a anodal fuse block of battery of two way MEGA fuses for the charging between battery and the heavy current circuit, discharge balance provides fusing protection to promote the whole protective properties of anodal fuse block of battery.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the two-way MEGA fuse battery positive electrode fuse box comprises a body and a busbar arranged on the body and used for connecting a battery connecting piece and a fuse, wherein the busbar is bent and comprises a leading-in part positioned at the top of the body and a converging part positioned on one side of the body; the fuse includes a first MEGA fuse, a second MEGA fuse, and a plurality of shunt fuses, and the second MEGA fuse and each of the shunt fuses are connected on the bus bar portion, and the first MEGA fuse is connected on the lead-in portion.

Furthermore, the body is formed with a fuse accommodating groove for accommodating each fuse.

Further, the second MEGA fuse and the two ends of each shunt fuse are fixedly connected with the busbar and the external wiring terminal through bolts respectively, and the bolts are clamped in the fuse accommodating grooves.

Furthermore, a slot for the bolt head of the bolt to be inserted in a single direction and an elastic clamping block for blocking the inserted bolt head in the slot are arranged in the accommodating groove.

Furthermore, an anti-rotation structure for limiting the rotation of the bus bar is arranged between the bus bar and the body.

Furthermore, the anti-rotation structure comprises a limiting tooth and a limiting flanging which are constructed on the busbar, and a limiting hole and a flanging limiting part which are correspondingly arranged on the body.

Further, the shunt fuse includes MIDI fuse and MINI fuse, be equipped with the adaptation in the fuse storage tank dismantled and assembled the fuse base of MINI fuse.

Further, set up the second MEGA fuse with each of branch circuit fuse the fuse storage tank is followed the direction of height of body arranges side by side in on the lateral wall of body, set up first MEGA fuse the fuse storage tank mould in the top of body.

Further, set up first MEGA fuse seted up the spacing mouth of terminal on the lateral wall of fuse storage tank, and with outside binding post that first MEGA fuse is connected is located in the spacing mouth of terminal, and can constitute this outside binding post prevent changeing the setting.

Furthermore, one end of the first MEGA fuse is connected with an external wiring terminal through the bolt, and the other end of the first MEGA fuse is connected with the bus bar through a pre-installed stud fixedly installed on the bus bar.

Compared with the prior art, the utility model discloses following advantage has:

two way MEGA fuses's anodal fuse box of battery, dispose first MEGA fuse, second MEGA fuse and a plurality of shut fuses, simultaneously, the busbar adopts the structure of buckling, and connect first MEGA fuse and second MEGA fuse respectively at the different positions of busbar, make the spatial arrangement of fuse box more reasonable, be located the first MEGA fuse easy access at top, not only can be for filling between battery and the heavy current circuit, the balance of discharging provides the fusing protection, do benefit to the whole protective properties who promotes the anodal fuse box of battery moreover.

In addition, adopt bolt cooperation nut, realize linking firmly between busbar and fuse and the outside binding post, connection performance is reliable to the accessible clamps the bolt head in the fuse storage tank, adorns parts such as busbar, fuse and outside binding post firmly on the body admittedly.

In addition, all fuses are divided into two parts and are respectively arranged on the side wall and the top of the body, and the first MEGA fuse is additionally arranged on the top of the fuse by virtue of the thickness space of the body, so that the whole size of the fuse box is saved, a good operation space is provided for the installation and the disassembly of the first MEGA fuse, and the first MEGA fuse is conveniently fastened and disassembled in the height direction (namely the Z direction) of the fuse box; and the pre-installed stud is fixedly installed on the bus bar in advance in a riveting mode, so that the space occupation of the fastener can be saved, and the installation and fastening efficiency can be improved.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic view of the overall structure of a two-way anode fuse box of a MEGA fuse according to an embodiment of the present invention after a cover is removed;

fig. 2 is a schematic structural diagram of a cover body of a positive electrode fuse box of a storage battery according to a first embodiment of the present invention;

fig. 3 is a schematic perspective view of a bus bar according to a first embodiment of the present invention;

fig. 4 is a schematic perspective view of a body of a fuse box according to a first embodiment of the present invention;

FIG. 5 is a schematic view of the body at the angle A shown in FIG. 4;

FIG. 6 is a schematic structural view of the body at the angle B shown in FIG. 4;

fig. 7 is a schematic view of the two paths of positive fuse boxes of the storage battery of the MEGA fuse according to the second embodiment of the present invention after the cover is removed;

fig. 8 is a schematic structural view of a cover of a battery positive electrode fuse box according to a second embodiment of the present invention;

fig. 9 is a schematic perspective view of a battery connector according to a third embodiment of the present invention;

description of reference numerals:

1. a body; 10. a cavity; 100. a first accommodating groove; 101. a limiting hole; 102. an elastic clamping block; 103. a limiting bulge; 104. a terminal limiting opening; 105. positioning ribs; 106. a slot; 107. a flanging limiting part; 108. a busbar limiting wall; 109. clamping grooves; 110. reinforcing ribs; 111. heat dissipation holes; 120. a second accommodating groove; 121. a sleeve assembly structure; 122. a terminal limiting structure; 123. a partition plate; 130. a fuse accommodating groove; 131. a fuse limiting structure;

2. a bus bar; 20. an introduction section; 200. pre-installing a stud; 201. limiting teeth; 202. a main connection hole; 203. limiting and flanging; 21. a confluence section; 211. a first connection hole; 212. mounting holes;

3. a battery connector; 300. a substrate; 301. a wire insertion hole; 302. fastening a nut; 303. connecting a stud;

401. a first connection end; 402. a second connection end; 41. a second MEGA fuse; 42. a first MEGA fuse;

5. a shunt fuse; 501. a first MIDI fuse; 502. a second MIDI fuse; 503. a MINI fuse; 504. a fuse base;

6. a nut; 60. a bolt; 600. a bolt head; 601. an external connection terminal;

700. a pivotal shaft; 701. a side cover; 702. a top cover; 703. a clamping part.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

The MEGA fuse, MIDI fuse and MINI fuse mentioned in the embodiments of the present invention are a common name for insurance in the industry, and the specification size and load current thereof are reduced in sequence.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The embodiment relates to a storage battery positive fuse box of two ways MEGA fuses, and it can provide respective fusing protection for heavy current circuits such as the charging of battery, power to promote the protective properties and the wholeness ability of storage battery positive fuse box.

An exemplary structure of the battery positive electrode fuse box is shown in fig. 1 and 2, and includes a body 1, a cover, and a bus bar 2 provided on the body 1 to connect a battery connecting member 3 and a fuse.

Referring to fig. 3, the bus bar 2 is bent and includes a lead-in portion 20 at the top of the main body 1 and a bus portion 21 at one side of the main body 1. The fuses include a first MEGA fuse 42, a second MEGA fuse 41, and a plurality of branch fuses 5, the second MEGA fuse 41 and each branch fuse 5 are connected to the bus bar part 21, and the first MEGA fuse 42 is connected to the introduction part 20.

Based on the above design concept, as shown in fig. 1 and fig. 4 to 6, in order to improve the electrical isolation performance between the fuse lines on the body 1, a fuse accommodation groove 130 for positioning and placing each fuse is formed on the body 1. Each fuse receiving groove 130 is used to mount one fuse, thereby forming a partition between the fuses. Meanwhile, the fuse can be quickly positioned and assembled in the fuse accommodating groove 130 by constructing the positioning structures such as the positioning rib 105, the fuse limiting structure 131 and the limiting protrusion 103 in the fuse accommodating groove 130, and the fuse can be prevented from rotating when the nut 6 is tightened.

As shown in fig. 3, a first connection hole 211 for mounting the second MEGA fuse 41 and mounting holes 212 for mounting the shunt fuses 5 are opened on the bus bar portion 21; the lead-in portion 20 is provided with a main connection hole 202 for attaching and connecting the battery connector 3 and a pre-mounting stud 200 for attaching the second MEGA fuse 41.

As shown in fig. 5 and 6, adjacent fuse receiving grooves 130 are partitioned by a partition plate 123, and a plurality of heat dissipation holes 111 may be formed at the bottom of the fuse receiving grooves 130 to facilitate heat dissipation of the fuse. At the location of the mounting nut 6, a notch in the form of a curved surface may be formed in the spacer 123 to form the sleeve mounting structure 121 to facilitate insertion of the mounting sleeve. Each fuse accommodation groove 130 is used for installing the external wiring terminal 601 corresponding to the line, and a terminal limiting structure 122 with different shapes can be constructed so as to be used for installing the external wiring terminals 601 with different specifications and shapes, so that the effect of preventing installation errors can be achieved, and certain limiting and loosening preventing effects can be formed on the external wiring terminals 601.

In addition, in order to save material while ensuring the overall strength of the body 1, a plurality of sets of cavities 10 are formed on the body 1, which are arranged according to the shape of the body 1, and the adjacent cavities 10 are separated by a rib 110. The side walls of the two opposite sides of the body 1 are provided with clamping grooves 109, and the cover body of the fuse box is quickly assembled on the body 1 through a clamping structure, so that good dustproof and waterproof protection effects are formed on each fusing circuit on the body 1.

As shown in fig. 2, the cover body preferably includes a side cover 701 and a top cover 702 hinged by a pivot shaft 700, and both sides of the side cover 701 are provided with clamping portions 703 corresponding to the clamping grooves 109 to form clamping of the side cover 701 on the body 1. The top cover 702 is provided at the top of the body 1 to correspond to the cover, and due to the provision of the pivot shaft 700, the top cover 702 can be pivoted open to facilitate the removal and installation of the battery connecting member 3 and the first MEGA fuse 42 connected to the introduction part 20.

For the installation of the bus bar 2 on the body 1, a manner of pre-screwing, clamping and the like can be adopted, preferably, as shown in fig. 1 and combined with fig. 3 and fig. 6, two ends of the fuse are respectively and fixedly connected with the bus bar 2 and the external connection terminal 601 through the bolt 60, a clamping structure for clamping the bolt head 600 of the bolt 60 is constructed in the fuse accommodating groove 130, and the bus bar 2 and the external connection terminal 601 are fixedly installed on the body 1 along with the fastening of the nut 6 on the bolt 60. Adopt bolt 60 cooperation nut 6, realize linking firmly between busbar 2 and fuse and outside binding post 601, connection performance is reliable to the accessible clamps in fuse storage tank 130 to bolt head 600, firmly adorns parts such as busbar 2, fuse and outside binding post 601 on body 1 admittedly. The bolt 60 is used for fastening and fastening the two ends of the fuse, and fastening and mounting components such as the bus bar 2 and the external terminal 601 on the body 1.

Specifically, the locking structure includes a slot 106 into which the bolt head 600 is inserted, and a resilient latch 102 for blocking the bolt head 600 in the slot 106. The positioning rib 105 also serves to limit the bolt head 600 from being inserted in place. The bolt head 600 may be configured in a rectangular plate shape, a column of the bolt 60 is vertically fixed on the bolt head 600, and two side edges of the bolt head 600 are inserted into the two slots 106 which are symmetrically arranged.

By adopting the matching structure of the slot 106 and the elastic fixture block 102, the elastic fixture block 102 can be elastically pressed down by adopting a structure such as a cantilever; the bolt head 600 abuts against the elastic fixture block 102 and is inserted into the slot 106 beyond the elastic fixture block 102, and along with the in-place insertion of the bolt head 600, the bolt head 600 is separated from abutting against the elastic fixture block 102, and the elastic fixture block 102 returns to the original position and forms a blocking position for the bolt head 600; the whole structure is reliable, and the bolt 60 can be conveniently and quickly positioned and installed on the body 1.

It is considered that the bus bar 2 or the external connection terminal 601 is rotated when the nut 6 of the bolt 60 is tightened, thereby causing stress to the fuse and possibly damaging the fuse. As shown in fig. 4 and 3, a rotation preventing structure for limiting the rotation of the bus bar 2 is provided between the bus bar 2 and the body 1, so as to avoid the fuse from being damaged due to the fuse being dragged by the displacement of the bus bar 2.

In the present embodiment, the rotation preventing structure includes a limiting tooth 201 and a limiting flange 203 configured on the bus bar 2, and a limiting hole 101 and a flange limiting portion 107 correspondingly provided on the body 1. The limit teeth 201 are inserted into the limit holes 101, and the limit holes 101 may be opened on the side wall of the first receiving groove 100 for mounting the first MEGA fuse 42. The first receiving groove 100 and the second receiving groove 120 described below are both one of the fuse receiving grooves 130, and are named separately for convenience of description.

The side wall of the first receiving groove 100 close to the inner side of the main body 1 may also be higher than the installation height of the bus bar 2, so as to form a bus bar limiting wall 108 capable of abutting against the side edge of the bus bar 2, so as to position and limit the rotation of the bus bar 2. At least two anti-rotation structures are adopted, and at least three limiting points can be formed by matching with the joint of the bus bar 2 on the body 1, so that the positioning of the bus bar 2 on the body 1 and the limitation on the rotation, the spacious movement and the like of the bus bar 2 can be well realized.

Based on the above-described structure, as shown in fig. 1, the respective fuse accommodation grooves 130 of the second MEGA fuse 41 and the shunt fuse 5 are arranged side by side on the side wall of the body 1 in the height direction of the fuse block (the direction indicated by Z in the drawing), preferably in the width direction of the body 1 (the direction indicated by X in the drawing). A first receiving groove 100 for the first MEGA fuse 42 to be positioned is formed at the top of the body 1, and in the present embodiment, the first receiving groove 100 is disposed along the thickness direction (the direction indicated by Y in the figure) of the body 1.

With all fuses divide two parts to locate the lateral wall and the top of body 1 respectively, borrow the thickness space of body 1 and add at its top and establish first MEGA fuse 42, not only do benefit to the whole size that wholly reduces the fuse box, and dismantle for the installation of first MEGA fuse 42 and provide good operating space.

The number of the shunt fuses 5 can be set according to actual needs, in the present embodiment, the shunt fuses 5 include MIDI fuses and MINI fuses 503, wherein the MIDI fuses include two paths of the first MIDI fuse 501 and the second MIDI fuse 502, and the MINI fuses 503 are set one path for weak current supply of sensors and the like on the vehicle. A fuse holder 504 adapted to the MINI fuse 503 is removably disposed in the fuse receiving groove 130 corresponding to the MINI fuse 503, so that the fuse receiving groove 130 can be assembled with the MIDI fuse or the fuse holder 504. Set up detachable fuse base 504 in the fuse storage tank 130 of shunting fuse 5, but MIDI fuse or fuse base 504 of nimble change installation have improved the adaptation performance of fuse box.

As the two-way fusing circuit of the first MEGA fuses 42 and 41 for charging and supplying power to the motor of the vehicle, it is preferable that the leftmost second receiving groove 120 on the sidewall of the body 1 is used to mount the second MEGA fuse 41, the first receiving groove 100 on the top is used to mount the first MEGA fuse 42, and the ends of the two MEGA fuses are fixedly connected to the bus bar 2 and the external connection terminal 601, respectively.

Taking the first MEGA fuse 42 as an example, as shown in fig. 1 and fig. 3, two ends of the first MEGA fuse 42 are named as a first connection end 401 and a second connection end 402, respectively, the first connection end 401 is used for being fixedly connected with the busbar 2, and the second connection end 402 is fixedly connected with the external connection terminal 601.

In order to facilitate the disassembly and inspection of the first MEGA fuse 42 from the top of the fuse block, in addition to providing the top cover 702 of the cover body as a rotatably openable structure, the bolt ends connected to the first connection end 401 and the second connection end 402 of the first MEGA fuse 42 are arranged upward to facilitate the fastening and disassembly of the first MEGA fuse 42 from the height direction of the fuse block (i.e., the Z direction thereof). The first MEGA fuse 42 and the bus bar 2 can be connected by a pre-installed stud 200 fixedly mounted on the bus bar 2; the pre-installed stud 200 is fixedly installed on the bus bar 2 in advance in a riveting mode, so that the space occupation of a fastener can be saved, and the installation and fastening efficiency can be improved. The connection between the first MEGA fuse 42 and the external connection terminals 601 may be in the form of the connection of the bolts 60 in the respective fuse receiving grooves 130 as described above.

In addition, a terminal limiting opening 104 is formed on a side wall of the first receiving groove 100, and the external connection terminal 601 connected to the first MEGA fuse 42 is limited in the terminal limiting opening 104. Set up the spacing mouth 104 of its pivoted terminal of restriction for outside binding post 601 of first MEGA fuse 42, can prevent it along with rotating when screwing up its corresponding nut 6, and then avoid outside binding post 601 to transmit the pivoted power of first MEGA fuse 42 in last tightening process, reduce the damage that probably brings first MEGA fuse 42 in the installation.

This embodiment two way MEGA fuses's anodal fuse box of battery, dispose first MEGA fuse 42, second MEGA fuse 41 and a plurality of fuse 5 of dividing routes, and simultaneously, busbar 2 adopts the structure of buckling, and connect first MEGA fuse 42 and second MEGA fuse 41 respectively at the different positions of busbar 2, make fuse box's spatial arrangement more reasonable, & be located the first MEGA fuse 42 easy to overhaul at top, not only can be for filling between battery and the heavy current circuit, the balance of discharging provides fusing protection, and do benefit to the whole protective properties who promotes battery anodal fuse box.

Example two

The embodiment provides another fusing circuit arrangement form of the battery anode fuse box of the two-way MEGA fuse.

As shown in fig. 7 and 8, the body 1 of the fuse block in the present embodiment is provided with four-circuit shunt fuses 5. The four shunt fuses 5 and the second MEGA fuse 41 are arranged on the side wall of the body 1. The shunt fuse 5 may employ a two-way MIDI fuse and a two-way MINI fuse 503, or a three-way MIDI fuse and a one-way MINI fuse 503. Of course, the MINI fuse 503 and MIDI fuse can also be flexibly exchanged via the fuse holder 504 as described in embodiment one.

The width dimension of the body 1 becomes large due to the increase in the number of shunt fuses 5, and in response to this change, the first MEGA fuse 42 located at the top can be laid in the width direction of the body 1, thereby reducing the size of the fuse box thickness.

For other structures of the fuse box of this embodiment, reference may be made to the structure of the first embodiment, which is not described herein again.

EXAMPLE III

The embodiment also designs a storage battery positive electrode fuse box of the two-way MEGA fuse.

The overall structure of this embodiment can be implemented by referring to the structure of the fuse box described in the first embodiment or the second embodiment, except that the battery connecting member 3 in the fuse box of this embodiment can take the form shown in fig. 9.

In the first and second embodiments, the bus bar 2 is pre-assembled with pre-assembled studs 200 for use in connection with the first MEGA fuse 42.

In the present embodiment, the battery connector 3 adopts a "T" shaped structure including two base plates 300 arranged separately, a wire insertion hole 301 connecting the two base plates 300, and a fastening nut 302 provided on one side of the wire insertion hole 301. The positive electrode bus line of the storage battery is inserted into the wire insertion hole 301, and the positive electrode bus line of the positive electrode is tightly connected to the battery connecting piece 3 by tightening the fastening nut 302.

The two substrates 300 are fixedly provided with connecting studs 303, one connecting stud 303 is inserted into the main connecting hole 202 of the bus bar 2 and fastened through a nut 6 to install the battery connecting piece 3 on the bus bar 2; the other connection stud 303 is used for connection to mount the first connection end 401 of the first MEGA fuse 42. This eliminates the need for pre-fixing the pre-installed stud 200 to the bus bar 2.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a anodal fuse box of battery of two way MEGA fuses, includes body (1), and locates busbar (2) in order to connect battery connecting piece (3) and fuse on body (1), its characterized in that: the bus bar (2) is bent and comprises a lead-in part (20) positioned at the top of the body (1) and a bus part (21) positioned at one side of the body (1); the fuse includes a first MEGA fuse (42), a second MEGA fuse (41) and a plurality of shunt fuses (5), and the second MEGA fuse (41) and each of the shunt fuses (5) are connected on the bus bar portion (21), the first MEGA fuse (42) is connected on the lead-in portion (20).

2. The two-way MEGA fuse battery positive electrode fuse box of claim 1, wherein: the fuse body (1) is formed with a fuse accommodation groove (130) for accommodating each fuse.

3. The two-way MEGA fuse battery positive electrode fuse box of claim 2, wherein: the two ends of the second MEGA fuse (41) and the two ends of each shunt fuse (5) are fixedly connected with the bus bar (2) and the external wiring terminal (601) through bolts (60), and the bolts (60) are clamped in the fuse accommodating grooves (130).

4. The two-way MEGA fuse battery positive electrode fuse box of claim 3, wherein: an insertion groove (106) into which a bolt head (600) of the bolt (60) is inserted in a one-way mode and an elastic clamping block (102) which blocks the inserted bolt head (600) in the insertion groove (106) are arranged in the fuse accommodating groove (130).

5. The two-way MEGA fuse battery positive electrode fuse box of claim 3, wherein: an anti-rotation structure for limiting the rotation of the bus bar (2) is arranged between the bus bar (2) and the body (1).

6. The two-way MEGA fuse battery positive electrode fuse box of claim 5, wherein: the anti-rotation structure comprises limiting teeth (201) and limiting flanges (203) which are constructed on the bus bar (2), and limiting holes (101) and flange limiting parts (107) which are correspondingly arranged on the body (1).

7. The two-way MEGA fuse battery positive electrode fuse box of claim 2, wherein: the shunt fuse (5) includes a MIDI fuse and a MINI fuse (503), and a fuse holder (504) adapted to the MINI fuse (503) is detachably provided in the fuse accommodation groove (130).

8. The two-way MEGA fuse battery positive electrode fuse box of claim 2, wherein: set up second MEGA fuse (41) with each of branch fuse (5) fuse storage tank (130) is followed the direction of height of body (1) arranges side by side on the lateral wall of body (1), sets up first MEGA fuse (42) fuse storage tank (130) mould in the top of body (1).

9. The two-way MEGA fuse battery positive fuse box of any one of claims 2-8, wherein: set up first MEGA fuse (42) seted up spacing mouthful of terminal (104) on the lateral wall of fuse storage tank (130), and with outside binding post (601) that first MEGA fuse (42) are connected are located in spacing mouthful of terminal (104), and can constitute to this outside binding post prevent changeing the setting.

10. The two-way MEGA fuse battery positive electrode fuse box of claim 9, wherein: one end of the first MEGA fuse (42) is connected with an external wiring terminal (601) through a bolt (60), and the other end of the first MEGA fuse is connected with the bus bar (2) through a pre-installation stud (200) fixedly arranged on the bus bar (2).

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