Fuse assembly and electric vehicle

Abstract

The utility model discloses a fuse assembly and an electric vehicle, the fuse assembly comprises at least one fuse, a housing, and conductive element groups corresponding to the fuse in number, each conductive element group comprises an anode conductive element and a cathode conductive element, the conductive element groups are fixedly connected to the housing, and the housing is provided with a plurality of conductive elements. Each fuse comprises a fuse body and insertion parts arranged at the two ends of the fuse body, each positive conductive element or each negative conductive element comprises a fusing connection part and a conductive part which are electrically connected, and the shell comprises limiting parts of which the number corresponds to that of the fuses; and when the fuse body is electrically connected with the conductive element group, the insertion parts arranged at the two ends of the fuse body are respectively in interference fit with the fusing connection part of the positive conductive element and the fusing connection part of the negative conductive element, and the fuse body is matched with the limiting part, so that the fuse body is fixed on the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a fuse component and an electric vehicle. Background Art

[0002] A fuse uses a metal conductor as a fuse element in series in a circuit. When an overload or short-circuit current passes through the fuse element, it melts due to its own heat generation, thereby interrupting the circuit. Currently, the weight of the high-voltage fuses installed in electric vehicles is relatively large. To meet the connection reliability requirements of high-voltage fuses, the main current connection method for high-voltage fuses is to lock and connect the fuses through bolts or other connection mechanisms. However, this method causes inconvenience in disassembling and assembling the fuses due to the large number of parts in the locking connection mechanism, and during the locking connection process of the fuses, it is necessary to monitor and record the torque and rotation angle in real time, making the locking connection process of the fuses more complex. It is easy to cause insufficient torque due to monitoring omissions, resulting in insufficient reliability of the locking connection of the fuses. For example, during the locking connection process of the fuses, due to insufficient torque, the parts of the connection mechanism fall off, resulting in the failure of the fuses. Summary of the Utility Model

[0003] The utility model provides a fuse component and an electric vehicle to solve the problems of inconvenient disassembly and assembly of fuses, high complexity in the locking connection process, and insufficient reliability in the locking connection of fuses when installing high-voltage fuses in existing electric vehicles.

[0004] To solve the above technical problems, according to one aspect of the utility model, a fuse component is provided. The fuse component includes: at least one fuse, a housing, and a set of conductive elements corresponding to the fuse. Each set of conductive elements includes a positive conductive element and a negative conductive element. The set of conductive elements is fixedly connected to the housing. The fuse includes a fuse body and an insertion portion provided on the fuse body. The positive conductive element and the negative conductive element include a fuse connection portion and a conductive portion that are electrically connected. The housing includes a limiting portion corresponding to the fuse for limiting the fuse body.

[0005] When electrically connecting the fuse body to the set of conductive elements, the insertion portion provided on the fuse body is in interference fit with the fuse connection portion of the positive conductive element and the fuse connection portion of the negative conductive element respectively, and the fuse body is matched with the limiting portion to fix the fuse body to the housing.

[0006] In some embodiments, the fuse connection portion includes at least two elastic pieces. The at least two elastic pieces cooperate to form a cavity for inserting the insertion portion. The port of the cavity is reduced in size to achieve the interference fit.

[0007] In some embodiments, the limiting portion includes an elastic buckle that matches the fuse body.

[0008] In some embodiments, the fusing connection portion and the conductive portion are integrally provided.

[0009] In some embodiments, the housing includes a guiding groove for guiding the insertion portion into the interior of the housing.

[0010] In some embodiments, the fuse assembly further includes a connection mechanism that connects the positive conductive element and / or the negative conductive element to the housing.

[0011] In some embodiments, the connection mechanism includes a first bearing portion that bears at least one of the positive conductive elements and a second bearing portion that bears at least one of the negative conductive elements, and the housing includes a locking portion that is connected to the first bearing portion or the second bearing portion in a non-return manner or a detachable manner.

[0012] In some embodiments, a fastening mechanism for fastening the positive conductive element or the negative conductive element to the housing is further included.

[0013] In some embodiments, the conductive portion is a copper bar, and the fusing connection portion is a terminal welded to the copper bar.

[0014] According to another aspect of the present invention, an electric vehicle is provided, and the electric vehicle uses the fuse assembly as described above.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The fuse component provided by the present utility model includes at least one fuse, a housing, and a set of conductive elements corresponding to the fuse. Each set of conductive elements includes a positive conductive element and a negative conductive element. The set of conductive elements is fixedly connected to the housing. The fuse includes a fuse body and an insertion part provided on the fuse body. Each positive conductive element or negative conductive element includes a fuse connection part and a conductive part that are electrically connected. The housing includes a limiting part corresponding to the fuse for limiting the fuse body. When electrically connecting the fuse body with the set of conductive elements, the insertion parts provided at both ends of the fuse body are in interference fit with the fuse connection part of the positive conductive element and the fuse connection part of the negative conductive element respectively, and the fuse body is matched with the limiting part so that the fuse body is fixed to the housing. Due to the interference fit between the insertion part and the fuse connection part of the positive conductive element and the fuse connection part of the negative conductive element respectively, and the cooperation between the fuse body and the limiting part, after the insertion part is inserted into the fuse connection part, under the action of the above interference fit and the limiting of the limiting part, the fuse body can be reliably fixed to the housing. When it is necessary to remove and disconnect the fuse, only need to pull out the insertion part from the fuse connection part and synchronously release the limiting effect of the limiting part. By using this fuse component, the problems of inconvenient disassembly and assembly of the high-voltage fuse in the existing electric vehicles, high complexity in the locking connection process, and insufficient reliability of the fuse locking connection can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective schematic diagram of the fuse component provided by an embodiment of the present application;

[0018] Figure 2 is an exploded view of the fuse component provided by an embodiment of the present application;

[0019] Figure 3 is a top view of the fuse component provided by an embodiment of the present application;

[0020] Figure 4 is provided by an embodiment of the present application Figure 3 schematic diagram of the A-A cross-section in;

[0021] Figure 5 is a front view of the fuse component provided by an embodiment of the present application;

[0022] Figure 6 is provided by an embodiment of the present application Figure 5 schematic diagram of the C-C cross-section in;

[0023] Explanation of the reference numerals in the drawings:

[0024] 1 Fuse, 11 Fuse body, 12 Insertion part, 2 Housing, 21 Limiting part, 22 Guide groove, 23 Locking part, 3 Positive conductive element (negative conductive element), 31 Fusing connection part, 311 Elastic piece, 312 Cavity, 32 Conductive part, 4 Connection mechanism, 41 First bearing part, 42 Second bearing part. Detailed implementation mode

[0025] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementations disclosed below.

[0026] During the process of installing a high-voltage fuse in an electric vehicle at present, there are many parts in the connection mechanism for locking and connecting the fuse, which is likely to cause inconvenience in disassembling and assembling the fuse. Moreover, during the process of locking and connecting the fuse, it is necessary to monitor and record the torque and rotation angle in real time, which makes the complexity of the locking and connecting process of the fuse relatively high, and it is easy to cause insufficient torque due to monitoring omissions, resulting in insufficient reliability of the locking and connecting of the fuse. Since the high-voltage fuse is a vulnerable part in the electric vehicle and needs to be easily replaced, the existing above-mentioned fuse locking and connecting method cannot meet the usage requirement of easy replacement.

[0027] In view of the field of electric vehicle manufacturing, in order to solve the problems of too high complexity in the connection process when installing a high-voltage fuse in an existing electric vehicle, which is likely to cause the fuse to fail, and the existing fuse locking and connecting method cannot meet the usage requirement of easy replacement of the fuse, the embodiment of the present application provides a fuse assembly. Please refer to Figures 1-6 to understand this embodiment, Figure 1 is a three-dimensional schematic diagram of the fuse assembly provided by the embodiment of the present application; Figure 2 is an exploded view of the fuse assembly provided by the embodiment of the present application; Figure 3 is a top view of the fuse assembly provided by the embodiment of the present application; Figure 4 is provided by the embodiment of the present application Figure 3 a schematic diagram of the A-A cross-section in [[ID=2,4]] Figure 5 is a front view of the fuse assembly provided by the embodiment of the present application; Figure 6 is provided by the embodiment of the present application Figure 5 a schematic diagram of the C-C cross-section in

[0028] As Figures 1-6As shown, the fuse component provided in this embodiment includes: at least one fuse 1, a housing 2, and a set of conductive elements corresponding to the fuse 1. Each set of conductive elements includes a positive conductive element 3 and a negative conductive element 3, that is, the number of sets of conductive elements is the same as the number of fuses 1. Each set of conductive elements includes one positive conductive element 3 and one negative conductive element 3. The set of conductive elements is fixedly connected to the housing 2. The fuse 1 includes a fuse body 11 and an insertion portion 12 provided on the fuse body 11. As Figure 1 shown, the insertion portion 12 can be inserts fixedly provided at both ends of the fuse body 11.

[0029] As Figure 1 shown, each positive conductive element 3 and each negative conductive element 3 include a fuse connection portion 31 and a conductive portion 32 that are electrically connected. The housing 2 includes a limiting portion 21 corresponding to the fuse 1 for limiting the fuse 1. The limiting portion 21 matches the number and position of the fuses 1. When the fuse 1 is inserted into the housing 2 to achieve electrical connection between the fuse body 11 and the set of conductive elements, the insertion portions 12 provided at both ends of the fuse body 11 are in interference fit with the fuse connection portion 31 of the positive conductive element 3 and the fuse connection portion 31 of the negative conductive element 3 respectively. At the same time, the fuse body 11 cooperates with the limiting portion 21 (that is, the fuse body 11 is limited by the limiting portion 21) to fix the fuse body 11 to the housing 2. Since the insertion portions 12 are in interference fit with the fuse connection portion 31 of the positive conductive element 3 and the fuse connection portion 31 of the negative conductive element 3 respectively, and the fuse body 11 cooperates with the limiting portion 21, after the insertion portion 12 is inserted into the fuse connection portion 31, under the action of the above interference fit and the limiting function of the limiting portion 21, the fuse body 11 can be reliably fixed to the housing 2. When it is necessary to remove and disconnect the fuse, only need to pull out the insertion portion 12 from the fuse connection portion 31 and synchronously release the limiting function of the limiting portion 21. By using this fuse component, the simplicity and reliability of the fuse locking connection can be achieved, as well as the use requirement of being easy to remove, avoiding the problems of inconvenient disassembly and assembly of the fuse, high complexity in the locking connection process, and insufficient reliability of the fuse locking connection that occur when installing high-voltage fuses in existing electric vehicles.

[0030] As Figure 1 and Figure 6As shown, the fusing connection part 31 includes a cavity 312 formed by at least two elastic pieces 311 for the insertion part 12 to be inserted. The port of the cavity 312 is set to be narrowed, so as to realize the interference fit between the insertion parts 12 at both ends of the fuse body 11 and the fusing connection parts 31 of the positive conductive element 3 and the fusing connection parts 31 of the negative conductive element 3 respectively. Specifically, when the insertion part 12 of the fuse 1 is inserted into the cavity, the elastic piece 311 with a narrowed port at the port provides friction force to the insertion part 12, and this structure can ensure that there is enough insertion distance between the insertion part 12 and the fusing connection part 31, and can effectively prevent the insertion part 12 from detaching from the fusing connection part 31.

[0031] As Figure 4 and Figure 6 shown, in this embodiment, the limiting part 21 is an elastic buckle matching the fuse body 11, which can limit the fuse body 11 inserted into the housing 2 and play an elastic anti-retreat role. By using the above at least two elastic pieces to form the fusing connection part 31 and the elastic buckle matching the fuse body 11, it can play a role in fixing and limiting the fuse 1 when the fuse 1 is inserted. And when it is necessary to remove and disconnect the fuse 1, by using the performance that the elastic buckle and multiple elastic pieces can generate elastic deformation under the action of external force, when the multiple elastic pieces generate elastic deformation, the insertion part 12 is pulled out, and the limiting part 21 releases its limiting function under elastic deformation, which can facilitate the pulling out of the insertion part 12 from the fusing connection part 31.

[0032] In this embodiment, the fusing connection part 31 of the positive conductive element 3 (or the negative conductive element 3) and the conductive part 32 can be fixedly connected through a connection mechanism (for example, fixedly connected by bolts), or can be integrally arranged. For example, the conductive part 32 is a copper row, and the fusing connection part 3l is a terminal welded to the copper row.

[0033] In this embodiment, as Figure 3 shown, the housing 2 further includes a guiding groove 22 for guiding the insertion part 12 into the interior of the housing 2, and the guiding groove 22 can provide an accurate insertion position for the insertion part 12.

[0034] The positive conductive element 3 or the negative conductive element 3 can be fixedly arranged relative to the housing 2, or can be detachably arranged. In this embodiment, the positive conductive element 3 or the negative conductive element 3 is preferably detachably arranged. Correspondingly, as Figure 1As shown, the fuse component further includes a connecting mechanism 4 for connecting the positive conductive element 3 or the negative conductive element 3 to the housing 2. The connecting mechanism 4 includes a first bearing portion 41 for bearing at least one positive conductive element 3 and a second bearing portion 42 for bearing at least one negative conductive element 3. Correspondingly, a locking portion 23 is further provided on the housing 2 for connecting to the first bearing portion 41 and the second bearing portion 42 in a non-return or detachable manner. When installing the positive conductive element 3 (or the negative conductive element 3) on the housing 2, first, the above positive conductive element 3 (or the negative conductive element 3) needs to be borne by the first bearing portion 41 or the second bearing portion 42 to a position matching the locking portion 23 at the bottom of the housing 2, and then the first bearing portion 41 or the second bearing portion 42 is locked to the housing 2 through the locking portion 23, thereby realizing the installation of the positive conductive element 3 (or the negative conductive element 3) on the housing 2.

[0035] In another embodiment, when the above positive conductive element 3 or negative conductive element 3 is fixedly arranged relative to the housing 2, the fuse component further includes a fastening mechanism for fastening and connecting the positive conductive element 3 or the negative conductive element 3 to the housing 2.

[0036] By using the fuse component provided in this embodiment, the simplicity and reliability of the locking connection of the fuse 1 can be achieved, as well as the usage requirement of being convenient for removal, avoiding the problems of inconvenient disassembly and assembly of the fuse, high complexity in the locking connection process, and insufficient reliability of the locking connection of the fuse 1 that occur when installing high-voltage fuses in existing electric vehicles.

[0037] Another embodiment of the present application further provides an electric vehicle, which is installed with the fuse component provided in the above embodiment. For the specific technical details of this fuse component, please refer to the above embodiment and will not be elaborated here.

[0038] It should be noted that although the present utility model is disclosed above with preferred embodiments, it is not used to limit the present utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the scope defined by the claims of the present utility model.

Claims

1. A fuse component, characterized in that, The fuse component includes: at least one fuse, a housing, and a set of conductive elements corresponding to the fuse. Each set of conductive elements includes a positive conductive element and a negative conductive element. The set of conductive elements is fixedly connected to the housing. The fuse includes a fuse body and an insertion part provided on the fuse body. The positive conductive element and the negative conductive element include a fusing connection part and a conductive part that are electrically connected. The housing includes a limiting part corresponding to the fuse for limiting the fuse body. When electrically connecting the fuse body to the set of conductive elements, the insertion part provided on the fuse body is in interference fit with the fusing connection part of the positive conductive element and the fusing connection part of the negative conductive element respectively, and the fuse body is matched with the limiting part so that the fuse body is fixed to the housing.

2. The fuse component according to claim 1, characterized in that, The fusing connection part includes at least two elastic pieces. The at least two elastic pieces cooperate to form a cavity for the insertion part to insert. The port of the cavity is set to be narrowed to achieve the interference fit.

3. The fuse component according to claim 1, wherein, The limiting part includes an elastic buckle that matches the fuse body.

4. The fuse component according to claim 1, characterized in that, The fusing connection part and the conductive part are integrally provided.

5. The fuse component according to claim 1, characterized in that, The housing includes a guiding groove for guiding the insertion part into the interior of the housing.

6. The fuse component according to claim 1, characterized in that, The fuse component further includes: a connection mechanism for connecting the positive conductive element and / or the negative conductive element to the housing.

7. The fuse component according to claim 6, characterized in that, The connection mechanism includes a first bearing part for bearing at least one positive conductive element and a second bearing part for bearing at least one negative conductive element. The housing includes a locking part that is connected to the first bearing part or the second bearing part in a non-return manner or a detachable manner.

8. The fuse component according to claim 6, wherein The fuse component further includes a fastening mechanism for fastening the positive conductive element or the negative conductive element to the housing.

9. The fuse component according to claim 1, characterized in that, The conductive part is a copper busbar, and the fusing connection part is a terminal welded to the copper busbar.

10. An electric vehicle, characterized in that, The electric vehicle is equipped with the fuse component according to any one of claims 1-9.

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