CN215183842U - Contact-fusing combined electrical apparatus, distribution box, battery assembly and vehicle - Google Patents

Abstract

The application belongs to the technical field of high-voltage electric appliances, and particularly relates to a contact-fusing combined electric appliance, a distribution box, a battery assembly and a vehicle. The contact-fuse combination includes a contactor, an electrical contact and a fuse. One side of the shell of the contactor is provided with a mounting seat, and the mounting seat is provided with a mounting groove; one end of the electric contact piece is electrically connected with the contact of the contactor, and the other end of the electric contact piece is positioned at the opening of the mounting groove; the fuse comprises a melt body, a first contact end and a second contact end, the melt body is arranged in the mounting groove, the first contact end is connected with one end, located at the opening of the mounting groove, of the electric contact piece, and the second contact end is used for being connected with an external circuit. Therefore, the modularization degree of the contact-fusing combined electrical apparatus is improved while the whole volume of the contact-fusing combined electrical apparatus is optimized, the maintenance economy of the contact-fusing combined electrical apparatus is also improved, and the automatic production and manufacturing of the contact-fusing combined electrical apparatus are facilitated.

Description

Contact-fusing combined electrical apparatus, distribution box, battery assembly and vehicle

Technical Field

The application belongs to the technical field of high-voltage electric appliances, and particularly relates to a contact-fusing combined electric appliance, a distribution box, a battery assembly and a vehicle.

Background

The new energy automobile is usually provided with a distribution box to electrically connect high-voltage components and parts and provide functions of charge and discharge control, high-voltage component power-on control, circuit overload short-circuit protection, high-voltage sampling, low-voltage control and the like for a high-voltage system of the new energy automobile.

The key components are typically located within the distribution box: the contactor is used for switching on and off a high-voltage circuit of the battery pack, and the fuse is used for short-circuit protection. In the distribution box, the mode that sets up of contactor and fuse has two kinds, one kind is that contactor and fuse separately set up alone, copper bar or cable connection are used to the centre, the drawback of this kind of mode lies in leading to the shared whole volume of fuse and contactor too big easily, the installation is maintained inconveniently, another kind is with contactor and fuse solid encapsulation in same insulator, though can reduce the whole volume of fuse and contactor limitedly so, but also make tearing open of fuse to trade very inconveniently, cost of maintenance climbs.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a contact-fusing combined electrical apparatus, a distribution box, a battery assembly and a vehicle, which can save the assembly space of a contactor and a fuse in the high-voltage distribution box on one hand, and can also realize the replacement of the fuse rapidly and conveniently on the other hand.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

in a first aspect: a contact-fuse combination is provided that includes a contactor, an electrical contact, and a fuse.

The contactor comprises a contactor body, a mounting seat, a mounting groove and a connecting piece, wherein the mounting seat is formed on one side of the contactor body and provided with the mounting groove; one end of the electric contact piece is electrically connected with the contact of the contactor, and the other end of the electric contact piece is positioned at the opening of the mounting groove; the fuse comprises a melt body, a first contact end and a second contact end, the first contact end is arranged at one end of the melt body, the second contact end is arranged at the other end of the melt body, the melt body is arranged in the mounting groove, the first contact end is connected with one end, located at an opening of the mounting groove, of the electric contact piece, and the second contact end is used for being connected with an external circuit.

The contact-fusing combined electrical apparatus provided by the embodiment of the application comprises a contactor and a fuse, wherein a mounting seat is arranged on one side of a shell of the contactor, a mounting groove is formed in the mounting seat, a fuse body of the fuse is arranged in the mounting groove, meanwhile, a first contact end of the fuse is connected to a contact of the contactor through an electric contact piece, and a second contact end of the fuse can be connected with an external circuit. So, the contact-fusing combined electrical apparatus that this application embodiment provided, on the one hand through set up the fuse-element of fuse in the mounting groove that is close to in the contactor casing, just so realized the design of integrating of contactor and fuse, saved the shared assembly space of contactor and fuse better. On the other hand, although the fuse is close to the contactor design, fuse and contactor still are independent setting, so just can realize carrying out comparatively convenient maintenance of changing of tearing open to the fuse, and when the fuse damages, only need change it can, need not to change together with the contactor. Therefore, the whole volume of the contact-fusing combined electrical apparatus is optimized, the modularization degree of the contact-fusing combined electrical apparatus is improved, the maintenance economy of the contact-fusing combined electrical apparatus is improved, and the automatic production and manufacturing of the contact-fusing combined electrical apparatus are facilitated.

Optionally, the number of the mounting grooves, the number of the electric connection plates and the number of the fuses are multiple, each electric connection plate is connected with each first contact end, and each melt is arranged in each mounting groove. The number of the mounting grooves is larger than or equal to that of the fuses. The number of the vacuum arc extinguishing chambers of the contactor is also multiple, and one ends of the vacuum arc extinguishers exposed out of the shell are separated by the partition frame, so that the insulation treatment between the adjacent vacuum arc extinguishers is realized.

Optionally, a partition plate for separating the melt is formed between two adjacent mounting grooves. The isolation plate can be detachably inserted into the bottom of the mounting seat, and can also be integrally formed with the bottom of the mounting seat.

Optionally, the melt is vertically arranged in the mounting groove, the first contact end is exposed at the notch of the mounting groove, and the second contact end is located at the bottom of the mounting groove.

Optionally, the first contact end and the second contact end are disposed on opposite sides of the melt. The second contact end can be provided with a wire hoop device to realize the constraint effect on the circuit wire electrically connected with the second contact end, so that the circuit wire is stably connected with the second contact end.

Optionally, the electrical contact includes a bus bar, one end of the bus bar is disposed on the housing of the contactor and electrically connected to the contact of the contactor, and a contact piece is formed at the other end of the bus bar and located at the opening of the mounting groove and connected to the first contact end.

Optionally, the busbar is fixed to the housing of the contactor by fastening bolts.

Optionally, the electrical contact comprises a cable and a contact strip, one end of the cable is electrically connected with the contact of the contactor, the other end of the cable is connected with the contact strip, and the contact strip is located at the opening of the mounting groove and is connected with the first contact end. The number of the contact pieces may be only one, and the plurality of first contact ends may be connected to the contact pieces, and the number of the contact pieces may be the same as the number of the fuses. When there are several contact pieces, one end of the cable connecting contact piece can be divided into several branch cables, and the several branch cables can be respectively and electrically connected with every contact piece.

Optionally, the contact plate is connected to the first contact end by a locking bolt.

Optionally, the housing and the mounting seat are integrally injection molded;

or the shell, the mounting seat and the isolation plate are integrally formed by injection molding.

In a second aspect: a power distribution box is provided, and the power distribution box comprises the contact-fusing combined electrical appliance.

The power distribution box provided by the embodiment of the application comprises the contact-fusing combined electrical apparatus, and the contact-fusing combined electrical apparatus saves the assembly space and simultaneously improves the maintenance convenience and the economical efficiency through the integration and the modular design of the contactor and the fuse, so that the power distribution box comprising the contact-fusing combined electrical apparatus can realize the reduction of the whole volume, the improvement of the installation convenience and the reduction of the maintenance cost.

In a third aspect: the battery assembly comprises a battery pack and the power distribution box, wherein the power distribution box is electrically connected with the battery pack.

The battery assembly that this application embodiment provided, owing to including foretell block terminal, and foretell block terminal has whole volume less, the installation convenience is higher and the lower advantage of maintenance cost, so make the whole installation convenience and the maintenance economy of the battery assembly including foretell block terminal promote.

In a fourth aspect: the vehicle comprises a vehicle body and the battery assembly, wherein the battery assembly is arranged in the vehicle body.

The vehicle provided by the embodiment of the application comprises the battery assembly, and the battery assembly has better overall installation convenience and maintenance economy, so that the maintenance economy of the vehicle with the battery assembly is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a prior art drawing;

FIG. 2 is a schematic structural diagram of a contact-fuse combination electrical apparatus according to an embodiment of the present disclosure;

FIG. 3 is a top view of the contact-fuse combination shown in FIG. 2;

FIG. 4 is a schematic diagram of another embodiment of a contact-fuse combination device according to the present disclosure;

fig. 5 is a schematic structural diagram of a fuse of the contact-fuse combined electrical apparatus according to an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

10-contactor 11-shell 12-mounting seat

13-mounting groove 14-contact 15-isolation plate

16-vacuum arc-extinguishing chamber 17-spacer 20-electric contact

21-busbar 22-contact piece 23-fastening bolt

24-cable 30-fuse 31-melt

32-first contact end 33-second contact end 34-wire grip.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1 to 5 are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "upright," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus should not be taken as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

For ease of understanding, the present application first briefly introduces a Power Distribution Unit (PDU).

A Power Distribution Unit (PDU) is an electrical device that provides Power Distribution for different electrical devices. It is usually bulky and is therefore usually placed in a cabinet. In recent years, with the widespread use of new energy vehicles, power distribution units have also come to be used in new energy vehicles.

In the field of new energy vehicles, the power distribution unit is generally referred to as a distribution box or a high voltage distribution box. The high-voltage sampling circuit has the functions of electrically connecting high-voltage components and providing functions of charge and discharge control, high-voltage component electrification control, circuit overload short-circuit protection, high-voltage sampling, low-voltage control and the like for a high-voltage system of a new energy automobile.

Because the assembly space in the vehicle is generally smaller, the assembly volume of the distribution box is required to be more rigorous, and meanwhile, certain maintenance economy of the distribution box is required to be ensured.

And this also makes the design of contactor 10 and fuse 30 in the present distribution box difficult, as shown in fig. 1, when contactor 10 and fuse 30 separately set up alone, both connect with copper bar or cable 24, so lead to fuse 30 and the shared whole volume of contactor 10 too big easily, and then lead to the whole volume of distribution box to exceed the requirement.

However, the contact 10 and the fuse 30 are fixed and sealed in the same insulator, so that the overall size of the fuse 30 and the contact 10 can be reduced to a limited extent, but the fuse 30 is very inconvenient to remove and replace, which leads to an increase in maintenance cost.

To sum up, the embodiment of the application provides a contact-fusing combined electrical apparatus, a distribution box, a battery pack assembly and a vehicle, on one hand, the assembly space of the contactor 10 and the fuse 30 in the high-voltage distribution box can be saved, and on the other hand, the fuse 30 can be rapidly and conveniently detached and replaced.

In a first aspect: referring to fig. 2, the present embodiment provides a contact-fuse combined electrical apparatus, which includes a contactor 10, an electrical contact 20, and a fuse 30. The contact-fusing combined electrical appliance can be applied to a vehicle-mounted distribution box/high-voltage distribution box or a distribution box.

Wherein, a mounting seat 12 is arranged on one side of a shell 11 of the contactor 10, and the mounting seat 12 is provided with a mounting groove 13. Specifically, the contactor 10 includes a housing 11, one or more vacuum interrupters 16 inserted into the housing 11, and contacts 14 exposed from the housing 11, wherein an incoming line end of the vacuum interrupters 16 is connected to an external cable (e.g., a high voltage line from a battery pack), and an outgoing line end of the vacuum interrupters 16 is connected to the contacts 14.

One end of the electrical contact 20 is electrically connected to the contact 14 of the contactor 10, and the other end of the electrical contact 20 is located at the opening of the mounting groove 13. The electrical contact 20 may be a cable 24 or a copper bar. The electrical contacts 20 function to electrically connect the contactor 10 and the fuse 30.

The fuse 30 includes a melt 31, a first contact end 32 disposed at one end of the melt 31, and a second contact end 33 disposed at the other end of the melt 31, the melt 31 being disposed in the mounting pocket 13, the first contact end 32 being connected to an end of the electrical contact 20 at the opening of the mounting pocket 13, the second contact end 33 being adapted to be connected to an external electrical circuit.

Referring to fig. 3, the contact-fuse combination device provided in the embodiments of the present application is further described as follows: the contact-fusing combined electrical apparatus provided by the embodiment of the application includes a contactor 10 and a fuse 30, wherein a mounting seat 12 is disposed on one side of a housing 11 of the contactor 10, a mounting groove 13 is formed in the mounting seat 12, a fuse element 31 of the fuse 30 is disposed in the mounting groove 13, meanwhile, a first contact end 32 of the fuse 30 is connected to a contact 14 of the contactor 10 through an electrical contact 20, and a second contact end 33 of the fuse 30 is capable of being connected to an external circuit. Thus, the contact-fuse combined electrical apparatus provided by the embodiment of the present application, on the one hand, by disposing the fuse element 31 of the fuse 30 in the mounting groove 13 adjacent to the housing 11 of the contactor 10, realizes the integrated design of the contactor 10 and the fuse 30, and preferably saves the assembly space occupied by the contactor 10 and the fuse 30. On the other hand, although the fuse 30 is designed to be closely attached to the contactor 10, the fuse 30 and the contactor 10 are still separately installed, so that the fuse 30 can be easily removed and replaced, and when the fuse 30 is damaged, only the fuse 30 needs to be replaced, and the fuse 30 does not need to be replaced together with the contactor 10. Therefore, the whole volume of the contact-fusing combined electrical apparatus is optimized, the modularization degree of the contact-fusing combined electrical apparatus is improved, the maintenance economy of the contact-fusing combined electrical apparatus is improved, and the automatic production and manufacturing of the contact-fusing combined electrical apparatus are facilitated.

In other embodiments of the present application, as shown in fig. 2 and 3, the number of mounting slots 13, the number of electrical connection plates and the number of fuses 30 are multiple, each electrical connection plate is connected to each first contact end 32, and each fuse element 31 is disposed in each mounting slot 13.

Specifically, the number of fuses 30 may be determined according to the number of electric devices matched to the contact-fuse combination, and the number of fuses 30 may be one or more. And the number of the mounting grooves 13 may be greater than or equal to the number of the fuses 30. The number of the mounting grooves 13 is designed to be larger than that of the fuses 30, so that an assembly space is reserved for the fuses 30 which are additionally arranged subsequently, the capacity expansion of the circuit of the contact-fusing combined electrical appliance is facilitated in the later period, and the contact-fusing combined electrical appliance has better compatibility.

Optionally, the number of the vacuum arc-extinguishing chambers 16 may also be multiple, and one end of the multiple vacuum arc-extinguishing chambers exposed to the housing 11 may be separated by the spacer 17, so as to achieve insulation treatment between the adjacent vacuum arc-extinguishing chambers. For example, when the number of the vacuum interrupters is three, the cross partition frame may be disposed on the top of the housing 11, such that the cross partition frame divides the top of the housing 11 into four isolated regions, wherein the three regions respectively accommodate one end of the three vacuum interrupters exposed at the top of the housing 11, and the other region may be provided with a power connector.

In other embodiments of the present application, as shown in fig. 2 and 3, a partition plate 15 for separating the melt 31 is formed between two adjacent mounting grooves 13. Specifically, by forming the isolation plate 15 between two adjacent mounting grooves 13, on one hand, the fuses 30 can be isolated, and short circuit caused by electric arc generated between two first contact ends 32 or two second contact ends 33 of each fuse 30 can be avoided.

On the other hand, after the fuse element 31 of a certain fuse 30 is fused, because the two sides of the fuse element are provided with the isolation plates 15, other adjacent fuse elements 30 cannot be influenced, so that other fuse elements 30 can work normally, and only the fused fuse element 30 needs to be replaced afterwards, thereby reducing the use and maintenance cost of the contact-fusing combined electrical apparatus.

For example, the isolation plate 15 may be detachably inserted into the bottom of the mounting seat 12, or may be integrally formed with the bottom of the mounting seat 12. When the division board 15 can be dismantled and insert and locate the bottom of mount pad 12, can adjust the interval of two adjacent division boards 15 through adjusting division board 15's the position of inserting, so can adjust and enclose the space size of establishing the mounting groove 13 that forms by two adjacent division boards 15 to make mounting groove 13 can adapt to different specification and dimension's fuse 30.

When the isolation plate 15 and the bottom of the mounting seat 12 are integrally formed, on one hand, the overall manufacturing efficiency of the mounting seat 12 and the isolation plate 15 can be improved, so that the manufacturing efficiency of the contact-fusing combined electrical appliance is also improved, and the contact-fusing combined electrical appliance is convenient to manufacture automatically. On the other hand, the strength of the joint between the isolation plate 15 and the bottom of the mounting seat 12 can be improved, the isolation plate 15 is prevented from being separated from the bottom of the mounting seat 12, and therefore the structural integrity of the contact-fusing combination appliance is also improved. And the manufacturing cost of the partition plate 15 and the mounting seat 12 can be reduced.

In other embodiments of the present application, as shown in fig. 2, the melt 31 is vertically disposed in the mounting groove 13, the first contact end 32 is exposed at the notch of the mounting groove 13, and the second contact end 33 is located at the bottom of the mounting groove 13. Specifically, by vertically disposing the melt 31 in the mounting groove 13, the lengthwise space of the mounting groove 13 can be saved, and the height space of the mounting groove 13 can be fully utilized, so that the fuse 30 can be disposed as close to the contactor 10 as possible, thereby improving the assembly compactness and the integration level of the contact-fuse combined electrical apparatus.

In other embodiments of the present application, as shown in FIG. 5, the first contact end 32 and the second contact end 33 are disposed on opposite sides of the melt 31. Specifically, the first contact end 32 and the second contact end 33 are respectively disposed on two opposite sides of the fuse element 31, so that the fuse 30 forms a "Z" shaped layout as a whole, and thus the first contact end 32 can extend towards the electrical contact 20, and the second contact end 33 also extends towards the opposite direction of the extending direction of the first contact end 32, and the second contact end 33 is exposed at the bottom opening of the mounting groove 13, so that the second contact end 33 is electrically connected with an external circuit, and the current delivered by the battery pack is delivered to a corresponding electrical device.

Optionally, the second contact end 33 may be provided with a wire loop 34 to achieve a binding effect on the circuit wires electrically connected to the second contact end 33, so that the circuit wires are firmly connected to the second contact end 33.

In other embodiments of the present application, as shown in fig. 3, the electrical contact 20 includes a busbar bar 21, one end of the busbar bar 21 is disposed on the housing 11 of the contactor 10 and electrically connected to the contact 14 of the contactor 10, and the other end of the busbar bar 21 is formed with a contact piece 22, and the contact piece 22 is located at the opening of the mounting slot 13 and connected to the first contact end 32.

Specifically, as a specific arrangement of the electrical contact 20, it may be a busbar 21, one end of which is electrically connected to the contact 14 of the contactor 10, and the other end of which is formed with a contact piece 22, wherein the number of the contact pieces 22 and the number of the first contact ends 32 may be the same, that is, the contact pieces 22 and the fuses 30 are arranged in one-to-one correspondence. It is also possible that a plurality of first contact ends 32 correspond to one contact piece 22.

By specifically setting the electrical contact 20 as the bus bar 21, the strength of the electrical contact 20 is ensured, and the configuration of the electrical contact 20 is determined, so that the overall structure of the contact-fusing combined electrical apparatus is more compact and the installation is convenient.

In other embodiments of the present application, as shown in fig. 3, the bus bar 21 is fixed to the housing 11 of the contactor 10 by fastening bolts 23. Specifically, the position that the copper bar 21 that converges is close to contactor 10 casing 11 has seted up the screw, and the pilot hole has also been seted up to the relevant position of contactor 10 casing 11, and fastening bolt 23 wears to locate screw and pilot hole in order to realize converging the removable connection of copper bar 21 and contactor 10 casing 11. Thus, the convenience in assembling and disassembling the busbar bar 21 and the housing 11 of the contactor 10 is realized.

In other embodiments of the present application, as shown in FIG. 4, the electrical contact 20 includes a wire 24 and a contact strip 22, one end of the wire 24 is electrically connected to the contact 14 of the contactor 10, the other end of the wire 24 is connected to the contact strip 22, and the contact strip 22 is located at the opening of the mounting slot 13 and is connected to the first contact end 32.

Specifically, as another specific arrangement of the electrical contact 20, the electrical contact 20 may also be selected to be a flexible cable 24 plus contact 22. The cable 24 is electrically connected to the contact 14 of the contactor 10 and has one end connected to the contact pad 22, and the contact pad 22 is connected to the first contact end 32. And the number of contact pieces 22 and the number of fuses 30 are kept the same. When there are a plurality of contact pads 22, the end of the cable 24 connected to the contact pads 22 can be separated into multiple branch cables 24, and the multiple branch cables 24 are electrically connected to each contact pad 22.

Similarly, the number of the contact pieces 22 may be only one, and the plurality of first contact ends 32 are connected to the contact pieces 22, so that the cables 24 connected to one end of the contact pieces 22 do not need to be separated from the multi-strand cables 24.

In other embodiments of the present application, the contact plate 22 is connected to the first contact end 32 by a locking bolt. Specifically, the contact piece 22 is connected with the first contact end 32 through the bolt, so that the detachable connection of the electrical contact 20 and the fuse 30 is realized, the disassembly and assembly of the electrical contact 20 and the fuse 30 are facilitated, the assembly efficiency of the electrical contact 20 and the fuse 30 is improved, and the overall assembly efficiency and the assembly flexibility of the contact-fusing combination electrical appliance are improved by combining the detachable connection of the electrical contact 20 and the shell 11 of the contact 10.

In other embodiments of the present application, housing 11 and mount 12 are integrally injection molded. Specifically, the housing 11 and the mounting seat 12 may be made of plastic, and the housing 11 and the mounting seat 12 are integrally injection-molded, so that even if the housing 11 and the mounting seat 12 have relatively complicated configurations, rapid manufacturing can be achieved by an integral injection molding technique, and at the same time, the manufacturing costs of the housing 11 and the mounting seat 12 can be reduced, so that the production efficiency of the contact-fuse combined electrical apparatus can be improved.

Alternatively, the housing 11, the mounting seat 12 and the isolation plate 15 are integrally injection molded, so that the manufacturing efficiency of the housing 11, the mounting seat 12 and the isolation plate 15 can be further improved, and the automatic production level of the contact-fuse combined electrical apparatus can be improved.

In a second aspect: the embodiment of the application also provides a power distribution box which comprises the contact-fusing combined electrical appliance.

The battery assembly that this application embodiment provided, owing to including foretell block terminal, and foretell block terminal has whole volume less, the installation convenience is higher and the lower advantage of maintenance cost, so make the whole installation convenience and the maintenance economy of the battery assembly including foretell block terminal promote.

In a third aspect: the embodiment of the application also provides a battery assembly, which comprises a battery pack and the power distribution box, wherein the power distribution box is electrically connected with the battery pack.

The battery assembly that this application embodiment provided, owing to including foretell block terminal, and foretell block terminal has whole volume less, the installation convenience is higher and the lower advantage of maintenance cost, so make the whole installation convenience and the maintenance economy of the battery assembly including foretell block terminal promote.

In a fourth aspect: the embodiment of the application also provides a vehicle, which comprises a vehicle body and the battery assembly, wherein the battery assembly is arranged in the vehicle body.

The vehicle provided by the embodiment of the application comprises the battery assembly, and the battery assembly has better overall installation convenience and maintenance economy, so that the maintenance economy of the vehicle with the battery assembly is improved.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (13)

1. A contact-fuse combination, characterized by: the method comprises the following steps:

the contactor comprises a contactor body, wherein a mounting seat is formed on one side of the contactor body, and a mounting groove is formed in the mounting seat;

one end of the electric contact is electrically connected with the contact of the contactor, and the other end of the electric contact is positioned at the opening of the mounting groove;

the fuse comprises a fuse body, a first contact end and a second contact end, the first contact end is arranged at one end of the fuse body, the second contact end is arranged at the other end of the fuse body, the fuse body is arranged in the mounting groove, the first contact end is connected with one end, located at the opening of the mounting groove, of the electric contact piece, and the second contact end is used for being connected with an external circuit.

2. The contact-fuse combination of claim 1, wherein: the number of the mounting grooves and the number of the fuses are multiple, and the melts are respectively arranged in the mounting grooves.

3. The contact-fuse combination of claim 2, wherein: and a partition plate for isolating the melt is formed between every two adjacent mounting grooves.

4. The contact-fuse combination of claim 1, wherein: the melt is vertically arranged in the mounting groove, the first contact end is exposed out of the notch of the mounting groove, and the second contact end is positioned at the bottom of the mounting groove.

5. The contact-fuse combination of claim 1, wherein: the first contact end and the second contact end are respectively arranged on two opposite sides of the melt body.

6. The contact-fuse combination of claim 1, wherein: the electric contact piece comprises a bus bar, one end of the bus bar is arranged on the shell of the contactor and is electrically connected with the contact of the contactor, and the other end of the bus bar is provided with a contact piece which is positioned at the opening of the mounting groove and is used for being connected with the first contact end.

7. The contact-fuse combination of claim 6, wherein: the busbar is fixed on the shell of the contactor through a fastening bolt.

8. The contact-fuse combination of claim 1, wherein: the electric contact piece comprises a cable and a contact piece, one end of the cable is electrically connected with the contact of the contactor, the other end of the cable is connected with the contact piece, and the contact piece is located at the opening of the installation groove and is connected with the first contact end.

9. The contact-fuse combination electrical apparatus according to any one of claims 6 to 8, wherein: the contact piece is connected with the first contact end through a locking bolt.

10. The contact-fuse combination according to any one of claims 1 to 8, wherein: the shell and the mounting seat are integrally formed in an injection molding mode.

11. A distribution box, characterized by: a contact-fuse combination comprising the contact-fuse combination of any one of claims 1 to 10.

12. A battery assembly, characterized by: a power distribution box comprising a battery pack and the power distribution box of claim 11, the power distribution box and the battery pack being electrically connected.

13. A vehicle, characterized in that: comprising a vehicle body and the battery assembly of claim 12, said battery assembly being disposed within said vehicle body.

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