CN218975383U - Multi-path fuse, electric equipment and vehicle - Google Patents

Abstract

The utility model discloses a multi-path fuse, electric equipment and a vehicle, wherein the multi-path fuse comprises a shell and at least two melts, wherein a containing cavity is formed in the shell, the melts are arranged in the containing cavity, each melt is configured to be respectively connected with different electric equipment, and a plurality of electric equipment work at different time. According to the multi-path fuse provided by the embodiment of the utility model, at least two melts are arranged in the same shell and respectively connected with the power utilization devices which do not work simultaneously, so that the space and the cost can be saved, and the power utilization safety is ensured.

Description

Multi-path fuse, electric equipment and vehicle

Technical Field

The utility model relates to the technical field of electronic devices, in particular to a multi-path fuse, electric equipment with the multi-path fuse and a vehicle with the multi-path fuse.

Background

The multipath fuse has the same function as the fuse, and mainly plays a role in protection. The protection method can be used for protecting a power battery system, a driving power system, a power conversion system and charging equipment on an electric automobile; the method can also be used for the backup protection of other vehicle devices such as relays, disconnecting switch breakers and supercapacitors.

In the related art, two fuses are simply arranged in one structure, so that two paths of connection are realized, and the integration level is low.

Disclosure of Invention

The utility model aims to provide a multi-path fuse which is characterized in that at least two melts are arranged in the same shell and respectively work with different electric devices, so that the space and the cost can be saved, and the electric safety is ensured.

Another object of the present utility model is to provide an electrical device, which includes the multi-path fuse.

It is a further object of the present utility model to provide a vehicle comprising the multiple fuse as described above.

The multi-path fuse comprises a shell and at least two melts, wherein a containing cavity is formed in the shell, the melts are arranged in the containing cavity, each melt is configured to be connected with different electric devices, and the electric devices do not work simultaneously.

According to the multi-path fuse provided by the embodiment of the utility model, at least two melts are arranged in the same shell and respectively connected with the power utilization devices which do not work simultaneously, so that the space and the cost can be saved, and the power utilization safety is ensured.

In addition, the multi-path fuse according to the above embodiment of the present utility model may further have the following additional technical features:

optionally, the multi-path fuse further includes at least two first connection terminals, each of the first connection terminals is connected to one of the melts, and each of the first connection terminals is used for connecting the corresponding melt and the power device.

Optionally, at least two first connection terminals are disposed at the first end of the housing.

Optionally, the first end of the housing is provided with a first insulation rib, and the first insulation rib is arranged between two adjacent first connection terminals.

Optionally, the accommodating cavity is provided with at least two first openings, at least two first openings are formed in the first end of the shell, the first insulation ribs are located between two adjacent first openings, and each first connection terminal covers one first opening.

Optionally, the multi-path fuse further includes at least two second connection terminals, each of the melts being connected between one of the first connection terminals and one of the second connection terminals.

Optionally, the first connection terminal is disposed at a first end of the housing, and the second connection terminal is disposed at a second end of the housing.

Optionally, a second end of the housing is provided with a second insulation rib, and the second insulation rib is arranged between two adjacent second connection terminals.

Optionally, the accommodating cavity is provided with at least two second openings, at least two second openings are formed in the second end of the shell, the second insulating ribs are located between two adjacent second openings, and each second connecting terminal covers one second opening.

Optionally, the multi-path fuse further includes at least one third connection terminal, one of at least two melts is connected between one of the first connection terminal and the third connection terminal, and the other of at least two melts is connected between the other of the first connection terminal and the third connection terminal.

Optionally, the multi-way fuse further comprises at least one indicator, at least one of the indicators being connected in parallel with one of the melts; when the melt in parallel with the indicator melts, the state of the indicator changes.

Optionally, the indicator comprises: the elastic part is connected with the indicating part and can drive the indicating part to move towards the direction of extending out of the accommodating cavity; the metal wire is connected with the indication part and is used for positioning the indication part; the metal wires are connected with the corresponding melts in parallel, and when the corresponding melts are melted, the metal wires are melted, so that the elastic part drives the indicating part to move.

Optionally, the housing is filled with an arc extinguishing medium, and at least two parts of the melt in the housing are separated by the arc extinguishing medium.

Optionally, the arc extinguishing medium is quartz sand with a particle diameter of between 0.2 and 0.3 mm.

Optionally, the shell is a porcelain tube or a fiberglass tube.

Optionally, the melt is a filiform structure.

Optionally, the melt is of a sheet structure, a fusing area is arranged on the melt, the fusing area comprises one or at least two fusing areas arranged along the conducting direction, and the fusing area is provided with a through hole.

Optionally, at least a portion of the melt is a multilayer laminate structure.

Optionally, the melt is a copper sheet or a silver sheet; and/or welding a fluxing medium on the melt, wherein the melting point of the fluxing medium is lower than that of the melt.

According to an embodiment of the utility model, a powered device includes: at least two electrical devices, at least two of the electrical devices configured to operate at different times; according to the multi-path fuse, each melt of the multi-path fuse is connected with one electric device.

According to an embodiment of the utility model, the vehicle comprises at least one multi-path fuse, at least two electric devices corresponding to the at least one multi-path fuse, wherein the at least two electric devices are configured to not work simultaneously, and each melt of the multi-path fuse is respectively connected with one electric device.

Optionally, the multiple-path fuse includes a first multiple-path fuse, the electric device corresponding to the first multiple-path fuse includes a motor controller and a charging seat, and the motor controller and the charging seat are configured to not work simultaneously; the first multi-path fuse comprises two melts, one of the two melts is connected with the motor controller, and the other of the two melts is connected with the charging seat.

Optionally, the multiple fuses include a second multiple fuse, the electrical device corresponding to the second multiple fuse includes a motor controller, a dc charging stand and an ac charging stand, and the motor controller, the dc charging stand and the ac charging stand are configured to operate at different time; the second multi-path fuse comprises three melts, a first one of the three melts is connected with the motor controller, a second one of the three melts is connected with the direct current charging seat, and a third one of the three melts is connected with the alternating current charging seat.

Optionally, the multiple fuses include a third multiple fuse, and the electrical device corresponding to the third multiple fuse includes a compressor and an electric heater of an air conditioning system of the vehicle, where the compressor and the electric heater are configured to not operate simultaneously; the third multi-path fuse comprises two melts, one of the two melts is connected with the compressor, and the other of the two melts is connected with the electric heater.

Drawings

Fig. 1 is a schematic diagram of a multiple fuse of one embodiment of the present utility model.

Fig. 2 is a schematic diagram of a multiple-way fuse according to another embodiment of the present utility model.

Fig. 3 is a schematic diagram of a multiple-way fuse according to yet another embodiment of the present utility model.

Fig. 4 is a schematic diagram of a multiple-way fuse according to still another embodiment of the present utility model.

Fig. 5 is a schematic diagram of a multiple-way fuse according to still another embodiment of the present utility model.

Fig. 6 is a schematic diagram of a multiple-way fuse according to still another embodiment of the present utility model.

Fig. 7 is a schematic diagram of a multiple-way fuse according to still another embodiment of the present utility model.

Fig. 8 is a schematic diagram of a multiple-way fuse according to still another embodiment of the present utility model.

Fig. 9 is a schematic diagram of a multiple-way fuse according to still another embodiment of the present utility model.

Fig. 10 is a schematic diagram of a multiple-way fuse according to still another embodiment of the present utility model.

Fig. 11 is a schematic diagram of a multiple-way fuse according to still another embodiment of the present utility model.

Fig. 12 is a schematic diagram of a multiple fuse according to yet another embodiment of the present utility model.

Fig. 13 is a schematic diagram of a multiple fuse according to yet another embodiment of the present utility model.

Figure 14 is a melt schematic of a multiple fuse in accordance with one embodiment of the present utility model.

Fig. 15 is a schematic diagram of a powered device according to an embodiment of the utility model.

Fig. 16 is a schematic diagram of a powered device according to another embodiment of the utility model.

Fig. 17 is a partial circuit schematic diagram of a vehicle in the related art.

Fig. 18 is a partial circuit schematic of a vehicle according to an embodiment of the utility model.

Fig. 19 is a partial circuit schematic of a vehicle according to another embodiment of the utility model.

Fig. 20 is a schematic partial circuit diagram of a vehicle according to still another embodiment of the present utility model.

Fig. 21 is a schematic partial circuit diagram of a vehicle according to still another embodiment of the present utility model.

Reference numerals: the multi-path fuse 10, the case 11, the first opening 101, the first insulation rib 111, the second insulation rib 112, the first connection terminal 121, the second connection terminal 122, the third connection terminal 123, the melt 131, the fusing area 131a, the through hole 131b, the m-effect point 131c, the arc extinguishing medium 14, the indicator 15, the indicator 151, the wire 153, the electric device 200, the power supply 21, the intermediate device 22, the vehicle 300, the battery pack 31, the positive electrode contactor 32, the negative electrode contactor 33, the front electric control A1, the motor controller A2, the direct current charging seat A3, the auxiliary power supply system A4, the compressor A5, the electric heater A6, the other electric devices A7, the alternating current charging socket A8, the electric devices a.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring to fig. 1, a multiple fuse 10 according to an embodiment of the present utility model includes a housing 11 and at least two melts 131, wherein the housing 11 has a receiving cavity therein, the melts 131 are disposed in the receiving cavity, each of the melts 131 is configured to be connected to a different electrical device a, and the plurality of electrical devices a are not operated simultaneously with each other.

According to the multi-path fuse 10 of the embodiment of the utility model, at least two melts 131 are arranged in the shell 11, so that the space occupied by the shell of a single fuse in the related art can be saved, and the material cost is reduced, so that the space and the cost can be saved.

For example, the at least two melts 131 may include a first melt and a second melt, the first melt and the second melt may be provided to the housing 11, the first melt may be used to connect the first electric device, the second melt may be used to connect the second electric device, and the first electric device and the second electric device may be provided in different forms to operate at the same time from each other. In addition, the reference to the first melt and the second melt in the above description does not mean that the multiple fuse 10 of the present utility model may include only two fuses, but only for the convenience of understanding of the skilled artisan, the multiple fuse 10 of the present utility model may include three or more melts 131 to achieve multiple connection through the multiple fuse 10.

In addition, at least two melts 131 in the present utility model may be connected to each other, may be separated from each other, or may be partially connected. For example, as shown in fig. 1 and 2, two melts 131 are provided in the housing 11, one ends of the two melts 131 are respectively used for connecting the electric device a, and the other ends of the two melts 131 can be separated from each other (as shown in fig. 1); or may be interconnected (as in fig. 2). In addition, more than three melts 131 can be arranged in the shell 11 in the utility model, one ends of the three melts 131 are respectively used for connecting the electric device A, and the other ends of the three melts 131 can be mutually separated (as shown in figure 3); two of which may also be connected to each other and separated from the other (as in fig. 4); but may also be interconnected (as in fig. 5). Of course, the multiple-way fuse 10 of the present utility model may also include more melts 131, and may also include other wiring modes, which are not enumerated in this utility model.

Melt 131 is used to protect wires or electrical appliances and the like from excessive currents and may be made of pure metal or alloy in the shape of bands (including varying section shapes), filaments (including mesh shapes) and the like.

In order to facilitate the connection of the multiple-path fuse 10 to the electric device A, the multiple-path fuse 10 of the utility model is also provided with a connecting terminal, thereby facilitating the connection of the electric device A to the multiple-path fuse 10 and simplifying the wiring process of the electric circuit with the multiple-path fuse 10.

As shown in fig. 6 to 14, in some embodiments of the present utility model, the multiple fuse 10 further includes at least two first connection terminals 121, each first connection terminal 121 being connected to one melt 131, each first connection terminal 121 being used to connect a corresponding melt 131 and an electrical device a. The connection point of the melt 131 may be led out through the first connection terminal 121 to facilitate connection of the melt 131 with the electric device a, and wiring of the multiple fuse 10 may be simplified.

In addition, at least two first connection terminals 121 are provided at the first end of the housing 11. The first connection terminal 121 is provided at the same end of the housing 11, so that the connection between the electrical device a and the multiple fuse 10 can be facilitated. Simplifying the layout of the circuit. Of course, depending on the actual use requirements, the first connection terminal 121 may be disposed at a different position of the housing 11, for example, the first connection terminal 121 may be disposed at a different end or a different side of the housing 11.

In order to avoid mutual interference between different lines and to facilitate wiring, the first insulation ribs 111 are provided at the first end of the housing 11, and the first insulation ribs 111 are provided between two adjacent first connection terminals 121. Through the insulating effect of the first insulating ribs 111, mutual insulation between the first wiring terminals or between the electric devices a connected with the first wiring terminals can be realized, mutual interference between different first wiring terminals is avoided, creepage distance can be increased, and generation of electric arcs is reduced or avoided, so that stability and safety of an electric circuit with the multi-path fuse 10 are improved.

In addition, in order to facilitate the connection of the melt 131 to the first connection terminals 121, the receiving chamber has at least two first openings 101, the at least two first openings 101 are provided at the first end of the housing 11, the first insulating ribs 111 are located between two adjacent first openings 101, and each first connection terminal 121 covers one first opening 101. Through setting up first opening 101, can make things convenient for the fuse-element 131 to be connected with corresponding first connecting terminal 121, improve the stability of being connected between fuse-element 131 and the first connecting terminal 121, avoid or reduce the poor problem of contact, improve the yields, stability and the life of multichannel fuse 10. By closing the first opening 101 with the first connection terminal 121, the structure of the multiple fuse 10 can be simplified, and the manufacturing cost of the multiple fuse 10 can be reduced.

As described above, the melts 131 in the present utility model may be connected together in the multiple-path fuse 10, or may be connected to the external electric devices a, respectively. As shown in fig. 6 to 9, the melts 131 are led out through the corresponding connection terminals, respectively, to connect the electric devices a; as also shown in fig. 10 to 13, the ends of the melt 131 are led out through the same connection terminal to connect a common consumer a. The following will explain in detail with reference to the accompanying drawings.

As shown in fig. 6-9, in some embodiments of the present utility model, the multiple fuse 10 further includes at least two second connection terminals 122, each melt 131 being connected between one first connection terminal 121 and one second connection terminal 122. The two ends of each melt 131 are respectively connected with the first connecting terminal 121 and the second connecting terminal 122, and are connected through the first connecting terminal 121 and the second connecting terminal 122, so that at least two melts 131 are mutually independent to connect with the electric device A, the melts 131 are mutually undisturbed and mutually independent, the stability of the multi-way fuse 10 can be improved, and after one melt 131 fails (blows, etc.), the melts 131 of other ways can also stably work, thereby improving the working stability of the multi-way fuse 10 with high speed.

In combination with the foregoing embodiments, the first connection terminal 121 is disposed at the first end of the housing 11, and the second connection terminal 122 is disposed at the second end of the housing 11. Thereby, the melt 131 can be conveniently connected to the corresponding first and second connection terminals 121 and 122, simplifying the structure of the multiple fuse 10, and facilitating assembly, and wiring of the device having the multiple fuse 10 can be facilitated. Of course, the first connection terminal 121 and the second connection terminal 122 may be disposed at other positions according to actual use requirements, for example, the first connection terminal 121 may be disposed at least one of the first end, the side surface and the second end of the housing 11; a second connection terminal 122 is provided at least one of the second end, the side surface, or the first end of the housing 11.

In order to avoid mutual interference between different lines and facilitate wiring, the second end of the housing 11 is provided with a second insulation rib 112, and the second insulation rib 112 is arranged between two adjacent second connection terminals 122. Through the insulating effect of the second insulating ribs 112, mutual insulation between the second wiring terminals or between the electric devices A connected by the second wiring terminals can be realized, mutual interference between different second wiring terminals is avoided, the creepage distance can be increased, and the generation of electric arcs is reduced or avoided, so that the stability and the safety of the electric circuit with the multi-path fuse 10 are improved.

In addition, in order to facilitate the connection of the melt 131 to the second connection terminal 122, the receiving cavity has at least two second openings provided at the second end of the housing 11, and the second insulation ribs 112 are located between two adjacent second openings, one second opening being capped by each second connection terminal 122. Through setting up the second opening, can make things convenient for the fuse-element 131 to be connected with corresponding second connecting terminal 122, improve the stability of being connected between fuse-element 131 and the second connecting terminal 122, avoid or reduce the poor problem of contact, improve the yields, the stability and life of multichannel fuse 10. And the second opening is covered by the second connection terminal 122, so that the structure of the multi-path fuse 10 can be simplified, and the manufacturing cost of the multi-path fuse 10 can be reduced.

As shown in fig. 10 to 13, in other embodiments of the present utility model, the multiple fuse 10 further includes at least one third connection terminal 123, one of at least two melts 131 is connected between a first connection terminal 121 and the third connection terminal 123, and the other of at least two melts 131 is connected between the other first connection terminal 121 and the third connection terminal 123. Thus, the two melts 131 can be connected together through the third connecting terminal 123 so as to connect the same electric device A, simplify the wiring of the multi-path fuse 10, optimize the circuit arrangement, and improve the performance and the application range of the multi-path fuse 10.

Taking the case 11 with two melts 131 as an example, the multiple fuse 10 includes two first connection terminals 121 corresponding to the two melts 131, wherein one ends of the two melts 131 are connected to the two first connection terminals 121, respectively, and the other ends of the two melts 131 are connected to the third connection terminal 123 (refer to fig. 2). Of course, the number of melts 131 in the present utility model is not limited to two, and the multiple fuse 10 may include more than three melts 131. And other connection manners can be adopted for at least two melts 131, which are not described in detail in the present utility model.

In addition, in order to facilitate checking the working state of the multiple-path fuse 10, the present utility model further provides an indicator 15 for facilitating checking the state of the multiple-path fuse 10. 6-13, in some embodiments of the present utility model, the multiple fuse 10 further includes at least one indicator 15, the at least one indicator 15 being connected in parallel with one melt 131; when melt 131 in parallel with indicator 15 melts, the state of indicator 15 changes. That is, when melt 131 is not melted, indicator 15 is in the first state; and upon melting of melt 131, indicator 15 will switch to the second state. By checking the state of the indicator 15, the operation condition of the fuse can be quickly judged, and thus, adjustment is performed. Wherein indicator 15 may indicate the operating condition of melt 131 by means of sound, light, an outgoing signal, a change in current, etc.

Specifically, when the multi-path fuse 10 is in operation, since the melt 131 and the indicator 15 are arranged in parallel, and when the melt 131 is in the on state, the indicator 15 is in a short-circuited state because the resistance of the melt 131 is relatively small, and the indicator 15 is in the first state; when melt 131 is in the off state, at which time melt 131 is shorted, indicator 15 will be in the on state, thereby enabling indicator 15 to switch to the second state.

Wherein the indicator 15 comprises: the indication part 151, the elastic part and the metal wire 153, wherein the elastic part is connected with the indication part 151 and can drive the indication part 151 to move towards the direction of extending out of the accommodating cavity; the wire 153 is connected to the indication part 151 and positions the indication part 151; the wires 153 are connected in parallel with the corresponding melts 131, and when the corresponding melts 131 are fused, the wires 153 are fused, so that the elastic part drives the indicating part 151 to move. Specifically, as described above, before the melt 131 melts, the wire 153 is short-circuited, and at this time, the indication portion 151 can be maintained in the initial state due to the combination of the wire 153 and the elastic portion; when the melt 131 is melted, the metal wire 153 is electrified, and the metal wire 153 is melted after the metal wire 153 is electrified, so that the indication part 151 loses the holding effect of the metal wire 153 and pops up under the elastic action of the elastic part, and thus, the working state of the multi-way fuse 10 can be rapidly checked by checking the state of the indication part 151, so that the multi-way fuse 10 can be conveniently replaced or maintained.

To facilitate viewing of the state of the melts 131, an elastic portion may be provided corresponding to each of the melts 131, as shown in fig. 6 and 9; in the case of a correlation between at least two melts 131, the fusing of a single melt 131 may affect the operational stability of the multiple fuse 10, so that one fuse may be shared by a plurality of melts 131, as shown in fig. 10 to 13. For example, as shown in fig. 13, the indicator 15 includes two wires 153, and the two wires 153 may be respectively associated with the two melts 131, and the indicator 151 may be ejected when both wires 153 are fused, or the indicator 15 may be ejected when one of the two wires 153 is fused. This function can be achieved by adjusting the elastic force of the elastic portion or the like.

In some embodiments of the utility model, as shown in fig. 9 and 13, the housing 11 is filled with an arc suppressing medium 14, and at least two portions of melt 131 within the housing 11 are separated by the arc suppressing medium 14. By means of the quenching medium 14, quenching in the housing 11 can be achieved, the stability and safety of the multi-way fuse 10 can be improved, and mutual interference between different melts 131 can be avoided or reduced.

Specifically, during use, the plurality of melts 131 are separated by the arc extinguishing medium 14, and when the melts 131 are electrified, electric arcs between the melts 131 can be avoided; after the melt 131 is fused, the arc generated during or after the fusing of the melt 131 is also isolated or extinguished by the arc extinguishing medium 14, so that the normal operation of other melts 131 is prevented from being influenced. By providing the arc extinguishing medium 14, the stability and safety of the multi-path fuse 10 can be effectively improved.

Wherein the quenching medium 14 is quartz sand with a particle diameter of between 0.2 and 0.3 mm. The arc extinguishing capability of the arc extinguishing medium 14 can be improved, and the stability and safety of the multi-path fuse 10 can be further optimized.

In some embodiments of the utility model, the housing 11 is a porcelain tube or a fiberglass tube. The insulation performance of the housing 11 can be improved to avoid mutual interference between different melts 131, and also to avoid affecting the protection effect of the melts 131 on the circuit, and to improve the stability of the multi-path fuse 10.

In addition, the melt 131 is in a form of protection through fusing, and the melt 131 is in a conductor structure, so that current can conveniently pass through, and the influence on power is reduced as much as possible. Wherein melt 131 is a filiform structure that can provide protection to the electrical circuit to maintain stability of the electrical circuit with high multiplexing fuse 10. Of course, depending on the actual use, the melt 131 may be provided in a different shape. As shown in fig. 14, the melt 131 of the present utility model may also have a sheet-like structure, where the melt 131 is provided with a fusing area 131a, the fusing area 131a includes one or at least two fusing areas 131a arranged along the conductive direction, and the fusing area 131a is provided with a through hole 131b. Through setting up through-hole 131b, can diminish the overcurrent area of fuse, when the circuit breaks down, can control the fusing position of fuse-element 131 in fusing district 131a to realize the purpose of controlling the fusing position of fuse-element 131, guarantee not influencing other parts after the fuse-element 131 fuses.

The number of the through holes 131b arranged in the fusing area 131a can be adjusted, and different numbers of the through holes 131b can be adjusted according to different required performances of the fused mass 131, so that the flow area of the fuse can be adjusted. In addition, one or more fusing areas 131a may be provided on the melt 131 in the present utility model, and when a plurality of fusing areas 131a are provided on the melt 131, the plurality of fusing areas 131a may be arranged along the extending direction of the melt 131.

As described above, the fusing power of the melt 131 can be changed by providing a different number of fusing areas 131a or providing a different number of through holes 131b in the fusing areas 131a in the present utility model. The utility model may also vary the fusing power of melt 131 in other ways, for example, at least a portion of melt 131 in the utility model may be a multi-layer laminate structure.

In some embodiments of the present utility model, melt 131 is a copper sheet or silver sheet, so that the conductivity of melt 131 can be improved, so that the power consumed by melt 131 can be reduced, not only can the fusing of melt 131 be avoided, but also the energy loss can be reduced, and the energy efficiency can be improved. In addition, in order to facilitate the melt 131 to be quickly fused when the circuit fails, improve the stability and safety of the circuit, avoid damaging other electric devices A7, and weld a fluxing medium on the melt 131, wherein the melting point of the fluxing medium is lower than that of the melt 131. Further optimizing the performance of the multiple fuse 10.

Referring to fig. 1 to 14, the fuse of the present utility model mainly includes a melt 131, an arc extinguishing medium 14, a housing 11, and a connection terminal, when a current in a circuit exceeds a predetermined value, the melt 131 is fused by heat generated by the current flowing through the melt 131, and an arc generated in the fusing process is extinguished under the action of the arc extinguishing medium 14. Unlike the fuses of the related art, the present utility model generally provides a new product that replaces two (or more) branch fuses that do not operate simultaneously.

It should be noted that, the simplest application scenario of the multi-path fuse 10 is to connect the electrical devices a that do not work simultaneously, so that even if one path in operation is blown, the influence of the generated temperature change, electric arc, etc. has little influence on the other path that does not work, so that the multi-path fuse 10 only needs to be simply integrated, and no influence among the melts 131 of the multiple paths is considered. Of course, the multiple fuse 10 may be applied to a consumer device that operates simultaneously.

The multi-way fuse 10 of the utility model can lower the cost, the volume and the weight; the method is suitable for branches of any power system, wherein loops of the power system do not work at the same time.

Referring to fig. 6 to 14, the multiple fuse 10 of the present utility model includes a housing 11, connection terminals (e.g., the aforementioned first, second, and third connection terminals 121, 122, 123), fixing bolts, sand filling port plugs, and the like, and the connection terminals may be connected to the housing 11 by the fixing bolts. In addition, the multiple-way fuse 10 may further include an indicator 15 for displaying the state of the melt 131, so as to facilitate visual identification of faults;

the end of the housing 11 of the present utility model is provided with insulation ribs (for example, the first insulation ribs 111 and the second insulation ribs 112 described above), and the insulation distance between adjacent connection terminals can be increased by providing the insulation ribs.

Fig. 9 shows an exploded view of what the multiple fuse 10 of the present utility model is. Wherein the arc extinguishing medium 14 is filled in the shell 11 and can absorb arc energy when the melt 131 is fused; the housing 11 may be provided as a porcelain tube or a glass fiber tube; the arc extinguishing medium 14 may be quartz sand, the particle size of which has a great influence on the arc extinguishing performance, and the particle diameter may be selected in the range of 0.2-0.3 mm. When an overload current or a short-circuit current passes through the fuse, the melt 131 fuses and an arc is generated in the tube, and the arc can be extinguished quickly due to the strong cooling effect and deionization effect of the quartz sand on the arc. When a large short-circuit current is broken, the arc is usually extinguished before the short-circuit current has reached a maximum value. The melt 131 connects the first connection terminal 121 with the second connection terminal 122 and is placed in the housing 11. The specific process is that the melt 131 is welded (or connected by other processes) to the first connecting terminal 121, then placed in the housing 11, and then welded (or connected by other processes) to the second connecting terminal 122. The multiple melts 131 in the shell 11 can be respectively provided with an indicator 15, the state of the melts 131 is displayed through the indicator 15, the indicator 15 comprises a metal wire 153 with larger internal resistance, an elastic part (such as a spring) and an indicator 151 (such as a metal column), one end of the metal wire 153 is fixed on the metal column, the metal column is arranged on the first connecting terminal 121 through the spring, the other end of the metal wire 153 is welded (or otherwise connected) on the second connecting terminal 122, and the metal wire 153 and the melt 131 are in parallel connection. In normal operation, since melt 131 has a very low resistance, typically m omega, loop current is substantially passed through melt 131; when the melt 131 is melted, loop current passes through the metal wire 153 of the indicator 15, the metal wire 153 is heated and melted, the spring loses the tension of the metal wire 153, and the metal column protrudes; the product state can be identified through visual inspection, and spot inspection identification is facilitated. The function and structure of the other indicators 15 corresponding to the melt 131 can be described above.

A schematic of melt 131 in a multiple-way fuse 10 according to one embodiment of the present utility model is shown in fig. 8. The material is generally copper or silver, and copper-silver alloy, copper-silver composite tape or pure silver are common, and when the rated current is smaller, the melt 131 is usually made into filaments; when the rated current is large, the variable cross section is formed. According to the difference of the current values of the applied branches, the melts 131 can be made into different quantities of melt 131 to be overlapped to meet different overcurrent requirements; meanwhile, according to different voltage values of the applied branches, the melt 131 can be designed into different rows of narrow diameters to meet different voltage class requirements; since copper and silver are both high melting point metal materials, to reliably break current under overload current, it is also possible to weld low melting point metals, such as tin or cadmium alloys, to the melt 131 at certain intervals to reduce the melting temperature, i.e., the M-effect point 131c as shown.

In connection with the foregoing, indicator 15 of the present utility model may comprise a copper wire in parallel with melt 131, which immediately blows upon melting melt 131, ejecting a red, striking logo, indicating a blown signal. Thus, it is easy to recognize whether the melt 131 is fused. The M-effect point 131c is a solder ball welded on the fuse body 131 of the fuse, and when the fuse body is overloaded, the solder ball is melted first to wrap the fuse body 131, copper and tin are mutually infiltrated to form a copper-tin alloy with a melting point lower than that of copper, so that the fuse body 131 can be fused at a lower temperature to realize overload protection. The fuse melt 131 is a rectangular sheet with a series of circular holes and necks, and the periphery of the sheet is filled with quartz sand arc extinguishing medium 14. The cross section area of the narrow neck of the round hole is small, the heat capacity is small, and when a short circuit fault occurs, the fault current can be fused when the fault current does not reach the expected short circuit current.

As shown in fig. 15 and 16, a powered device 200 according to an embodiment of the present utility model includes: at least two electrical devices a configured to not operate simultaneously; according to the aforementioned multiple fuse 10, each melt 131 of the multiple fuse 10 is connected to one electric device a, respectively. Through setting up aforementioned multichannel fuse 10, can improve space utilization to reduce material cost, thereby can realize saving space and cost, can connect the power consumption device A of different simultaneous working through two at least melts 131, thereby optimize the performance that has the electric wire of this multichannel fuse 10, and make this multichannel fuse 10 have bigger application scope, improve the practicality of this multichannel fuse 10.

For example, as shown in fig. 15 and 16, the multiple fuse 10 includes a plurality of melts 131, and the plurality of melts 131 are respectively connected to a plurality of electrical devices a. Specifically, the electric device 200 includes a power source 21, an intermediate device 22, a multi-path fuse 10, a plurality of electric devices a, and the like, where the power source 21, the intermediate device 22 and the first electric devices are connected into a circuit, and the electric devices a can be provided with power through the power source 21. The multiple-path fuse 10 includes a plurality of melts 131, one ends of the melts 131 are connected to the intermediate device 22, and the other ends are respectively connected to at least a part of the plurality of electrical devices a, so that protection is provided for the plurality of electrical devices a by the multiple-path fuse 10.

In addition, the plurality of electrical devices a may include first electrical devices that operate at different time from each other, and may further include a second electrical device that may operate at the same time as the first electrical devices, so that the plurality of first electrical devices may be connected to the power source 21 through the multiple fuses 10, and the second electrical device may be connected to the power source 21 through other fuses.

In fig. 15, the melts 131 in the multiple-path fuse 10 are independent of each other, and two ends of the melts 131 are respectively and independently connected to an external structure, for example, one ends of the melts 131 are respectively connected to the intermediate device 22, and the other ends of the melts 131 are respectively connected to the first electrical devices. In addition, unlike the embodiment shown in fig. 15, fig. 16 shows another embodiment of an electrical consumer 200, in which one end of the melt 131 is connected to the intermediate device 22 in the multi-way fuse 10 and then to the intermediate device 22, and the other end of the melt 131 is connected to a plurality of first electrical devices, respectively.

Of course, as described above, the multiple-way fuse 10 of the present utility model may also be configured to have other numbers or connection forms of melts 131, and the present utility model will not be described in detail.

The present utility model provides various embodiments in combination with the accompanying drawings:

for example, as shown in fig. 15, the scheme one adopts a two-in two-out scheme (also can be designed as a multiple-in multiple-out scheme), wherein the power utilization devices A2 to An do not work simultaneously, so the multi-path fuse 10 of the present utility model can be used; the electrical device A1 and the electrical devices A2 to An have application conditions that work simultaneously, so a separate fuse needs to be designed.

As another example, as shown in fig. 16, the second scheme adopts a one-in two-out scheme (which can be also designed as a one-in multiple-out scheme), wherein the second to nth electric devices do not work simultaneously, so that the multiple-path fuse 10 of the present utility model can be used; the first electric device and the second to nth electric devices have application working conditions of working simultaneously, so that a separate fuse needs to be designed.

As shown in fig. 18 to 21, the present utility model also provides a vehicle 300, and the vehicle 300 according to an embodiment of the present utility model includes at least one of the aforementioned multiple fuses 10, at least two electric devices a corresponding to the at least one multiple fuse 10, the at least two electric devices a being configured to not operate simultaneously, each melt 131 of the multiple fuse 10 being connected to one electric device a, respectively. By providing the aforementioned multiple fuse 10, the wiring structure inside the vehicle 300 can be simplified, the space utilization of the vehicle 300 can be optimized, the production cost of the vehicle 300 can be reduced, and the maintenance and overhaul efficiency of the vehicle 300 can be improved.

Wherein, the vehicle 300 may include one multiple-way fuse 10, or may include a plurality of multiple-way fuses 10.

As shown in fig. 17, a vehicle 300 in the present utility model may include a battery pack 31, a positive electrode contactor 32, a negative electrode contactor 33, a front electric control A1, a motor controller A2, a direct current charging stand A3, an auxiliary power supply 21 system, a compressor A5, an electric heater A6 (e.g., PTC, etc.), an alternating current charging stand A8, and other electric devices A7. The front electric control A1, the motor controller A2, the dc charging stand A3, and the auxiliary power supply 21 may be connected to the battery pack 31, while the compressor A5, the electric heater A6, and the other electric devices A7 may be connected to the front electric control A1, and the ac charging stand A8 may be connected to the auxiliary power supply 21. In addition, a fusing structure may be provided between the front electric control A1, the motor controller A2, the dc charging stand A3, the ac charging stand, and the like and the battery pack 31; a fusing structure can be arranged between the compressor A5, the electric heater A6, other electric devices and the like and the front electric control A1 (or the battery pack 31); a fusing structure or the like may be provided between the ac charging outlet A8 and the auxiliary power supply 21 system (or the battery pack 31). The fusing structure may be the multi-path fuse 10 according to the present utility model, or may be other fuses in the related art. Various embodiments of the present utility model are described below with reference to the accompanying drawings.

As shown in fig. 18 and 19, in some embodiments of the present utility model, the multiple-path fuse 10 includes a first multiple-path fuse, and the electrical device a corresponding to the first multiple-path fuse includes a motor controller A2 and a charging stand, where the motor controller A2 and the charging stand are configured to operate at different times; the first multi-path fuse includes two melts 131, one of the two melts 131 is connected with the motor controller A2, and the other melt 131 of the two melts 131 is connected with the charging stand. The motor controller A2 and the charging seat which do not work simultaneously can be respectively connected through the multipath fuse 10, so that the number of the fuses and the occupied space can be simplified, the space utilization rate is improved, the cost is reduced, and the maintenance is convenient.

As shown in fig. 20 and 21, in other embodiments of the present utility model, the multiple-path fuse 10 includes a second multiple-path fuse, and the electrical device a corresponding to the second multiple-path fuse includes a motor controller A2, a dc charging stand A3, and an ac charging stand, where the motor controller A2, the dc charging stand A3, and the ac charging stand are configured to operate at different times from each other; the second multi-path fuse includes three melts 131, a first one of the three melts 131 is connected with the motor controller A2, a second one 131 of the three melts 131 is connected with the direct current charging stand A3, and a third one 131 of the three melts 131 is connected with the alternating current charging stand.

As shown in fig. 20 and 21, in other embodiments of the present utility model, the multiple fuse 10 includes a third multiple fuse, and the electrical device a corresponding to the third multiple fuse includes a compressor A5 and an electric heater A6 of an air conditioning system of the vehicle 300, the compressor A5 and the electric heater A6 being configured not to operate simultaneously; the third multiplex fuse includes two melts 131, one of the two melts 131 is connected to the compressor A5, and the other melt 131 of the two melts 131 is connected to the electric heater A6.

An electric vehicle will be described as an example of an application scenario of the multi-way fuse 10 of the present utility model.

Embodiment one

Fig. 18 is a high-voltage electrical schematic diagram of a first embodiment of a multiple fuse 10 to which the present utility model is applied, and fig. 17 is a schematic diagram of a multiple fuse 10 to which the present utility model is not applied. The direct-current charging loop can work by controlling the direct-current charging positive electrode relay and the direct-current charging negative electrode relay, and the battery pack is charged under the normal static working condition. The IGBT in the motor controller A2 is controlled to make the motor controller A2 work in a loop, so that the power performance of the vehicle 300 is enhanced, and generally, the charging loop and the motor controller A2 do not work simultaneously during the running process of the vehicle 300, so that the multiple-path fuse 10 of the present utility model can be applied to replace multiple fuses in the related art, and the effects of saving volume, weight and cost are achieved.

Second embodiment

Fig. 19 is a high-voltage electrical schematic diagram of a second embodiment of a multiple-way fuse 10 to which the present utility model is applied.

Embodiment III

Fig. 20 is a high-voltage electrical schematic diagram of a first embodiment of a multiple-way fuse 10 to which the present utility model is applied. The motor controller A2 and the direct current charging seat A3 are connected with the same multi-path fuse; and the compressor A5 and the motor heater are connected with the same multi-path fuse.

Embodiment III

Fig. 21 is a high voltage electrical schematic diagram of a multiple fuse 10 to which the present utility model is applied. The motor controller A2, the direct current charging seat A3 and the alternating current charging seat are connected with the same multi-path fuse; and the compressor A5 and the motor heater are connected with the same multi-path fuse.

The above embodiments are, of course, merely descriptions of some specific embodiments of the utility model and are not intended to limit the scope of the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (21)

1. A multi-path fuse (10), which is characterized by comprising a shell (11) and at least two melts (131), wherein a containing cavity is formed in the shell (11), the melts (131) are arranged in the containing cavity, each melt (131) is configured to be respectively connected with different electric devices (a), and a plurality of electric devices (a) are mutually different and work at the same time.

2. The multiple fuse (10) of claim 1, further comprising at least two first connection terminals (121), each first connection terminal (121) being connected to one of the melts (131), each first connection terminal (121) being adapted to connect a corresponding one of the melts (131) to the electrical consumer device (a).

3. The multiple fuse (10) of claim 2, wherein at least two of the first connection terminals (121) are provided at a first end of the housing (11).

4. A multiple fuse (10) according to claim 3, characterized in that the first end of the housing (11) is provided with a first insulating rib (111), the first insulating rib (111) being arranged between two adjacent first connection terminals (121).

5. The multiple fuse (10) of claim 4, wherein the receiving cavity has at least two first openings (101), at least two of the first openings (101) being provided at a first end of the housing (11), the first insulating ribs (111) being located between two adjacent first openings (101), each of the first connection terminals (121) closing one of the first openings (101).

6. The multiple fuse (10) of any one of claims 2-5, wherein the multiple fuse (10) further comprises at least two second connection terminals (122), each of the melts (131) being connected between one of the first connection terminals (121) and one of the second connection terminals (122).

7. The multiple fuse (10) of claim 6, wherein the first connection terminal (121) is disposed at a first end of the housing (11) and the second connection terminal (122) is disposed at a second end of the housing (11).

8. The multiple fuse (10) of claim 7, characterized in that a second end of the housing (11) is provided with a second insulating rib (112), the second insulating rib (112) being disposed between two adjacent second connection terminals (122).

9. The multiple fuse (10) of claim 8, wherein the receiving cavity has at least two second openings, at least two of the second openings being provided at a second end of the housing (11), the second insulating ribs (112) being located between two adjacent second openings, one of the second openings being capped by each of the second connection terminals (122).

10. The multiple fuse (10) of claim 2, wherein the multiple fuse (10) further comprises at least one third connection terminal (123), one of at least two of the melts (131) being connected between one of the first connection terminals (121) and the third connection terminal (123), the other of at least two of the melts (131) being connected between the other of the first connection terminals (121) and the third connection terminal (123).

11. The multiple fuse (10) of claim 1, wherein the multiple fuse (10) further comprises at least one indicator (15), at least one of the indicators (15) being connected in parallel with one of the melts (131); when the melt (131) connected in parallel with the indicator (15) melts, the state of the indicator (15) changes.

12. The multiple fuse (10) of claim 11, wherein the indicator (15) comprises: the elastic part is connected with the indicating part (151) and can drive the indicating part (151) to move towards the direction of extending out of the accommodating cavity; the metal wire (153) is connected with the indication part (151) and positions the indication part (151);

wherein the metal wire (153) is connected with the corresponding melt (131) in parallel, and when the corresponding melt (131) is melted, the metal wire (153) is melted, so that the elastic part drives the indicating part (151) to move.

13. The multiple fuse (10) of claim 1, wherein the housing (11) is filled with an arc suppressing medium (14), portions of at least two of the melts (131) within the housing (11) being separated by the arc suppressing medium (14).

14. The multiple fuse (10) of claim 13, wherein the quenching medium (14) is quartz sand having a particle diameter between 0.2 mm and 0.3 mm.

15. The multiple fuse (10) of claim 1, wherein the housing (11) is a porcelain tube or a fiberglass tube.

16. The multiple fuse (10) of claim 1, wherein the melt (131) is a wire-like structure;

and/or the melt (131) is of a sheet-shaped structure, a fusing area (131 a) is arranged on the melt (131), the fusing area (131 a) comprises one or at least two fusing areas arranged along the conducting direction, and the fusing area (131 a) is provided with a through hole (131 b);

and/or at least a portion of the melt (131) is a multilayer laminate structure.

17. The multiple fuse (10) of claim 1, wherein the melt (131) is a copper or silver sheet; and/or welding a fluxing medium onto the melt (131), the fluxing medium having a melting point lower than the melting point of the melt (131).

18. A powered device (200), comprising:

at least two electrical consumer devices (a), at least two of said electrical consumer devices (a) being configured to operate at different times;

The multiple fuse (10) of any one of claims 1-17, each of the melts (131) of the multiple fuse (10) being connected to one of the electrical devices (a), respectively.

19. A vehicle (300) comprising at least one multiple fuse (10) according to any one of claims 1-17, at least two electrical consumer devices (a) corresponding to at least one of the multiple fuses (10), at least two of the electrical consumer devices (a) being configured to operate at different times, each of the melts (131) of the multiple fuses (10) being connected to one of the electrical consumer devices (a) respectively.

20. The vehicle (300) of claim 19, wherein the multiple-way fuse (10) includes a first multiple-way fuse, the electrical device (a) to which the first multiple-way fuse corresponds includes a motor controller (A2) and a charging dock, the motor controller (A2) and the charging dock being configured to operate at different times; the first multi-path fuse comprises two melts (131), one of the two melts (131) is connected with the motor controller (A2), and the other melt (131) of the two melts (131) is connected with the charging seat;

Or, the multi-path fuse (10) comprises a second multi-path fuse, the electric device (A) corresponding to the second multi-path fuse comprises a motor controller (A2), a direct current charging seat (A3) and an alternating current charging seat, and the motor controller (A2), the direct current charging seat (A3) and the alternating current charging seat are configured to work at different time; the second multi-path fuse comprises three melts (131), wherein a first one of the three melts (131) is connected with the motor controller (A2), a second one of the three melts (131) is connected with the direct-current charging seat (A3), and a third one of the three melts (131) is connected with the alternating-current charging seat.

21. The vehicle (300) of claim 19, wherein the multiple fuse (10) includes a third multiple fuse, the electrical device (a) to which the third multiple fuse corresponds includes a compressor (A5) and an electric heater (A6) of an air conditioning system of the vehicle (300), the compressor (A5) and the electric heater (A6) being configured to not operate simultaneously; the third multi-path fuse comprises two melts (131), one of the two melts (131) is connected with the compressor (A5), and the other melt (131) of the two melts (131) is connected with the electric heater (A6).

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