Fuses, battery systems and electrical equipment

Abstract

The present application provides a fuse, a battery system and an electrical device, which relate to the technical field of power-off protection devices. The housing of the fuse has a cavity, and a conductive mechanism is provided in the housing. The excitation mechanism includes a liquid medium and an excitation electrode. The liquid medium is placed in the cavity, and a part of the excitation electrode is immersed in the liquid medium in the cavity. The liquid medium is used to form an action force under the excitation action of the excitation electrode. The disconnection mechanism is located in the housing, and the disconnection mechanism is used to move toward the conductive mechanism and disconnect the conductive mechanism under the action force formed by the excitation mechanism. The fuse provided by the embodiment of the present application can improve the safety of the fuse and reduce the manufacturing cost of the fuse.

Description

Technical Field

[0001] The present application relates to the technical field of power-off protection equipment, and in particular to a fuse, a battery system and electrical equipment. Background Art

[0002] The fuse can automatically cut off the circuit when a fault occurs in the power line or electrical equipment, thereby protecting the electrical equipment and preventing major safety accidents.

[0003] The fuse in the related art generally includes an excitation source, a conductor in the power line and a disconnecting device. The excitation source is generally gunpowder, which generates an impact force through explosion to push the disconnecting device toward the conductor to cut off the conductor, thereby interrupting the circuit of the power line.

[0004] However, the excitation source of the fuse in the above-mentioned related technology has low safety in use and high cost, which affects the safety in use and manufacturing cost of the fuse, and further affects the safety in use and manufacturing cost of the battery system and electrical equipment. Summary of the invention

[0005] The embodiments of the present application provide a fuse, a battery system and an electrical device, which are used to solve the technical problems in the above-mentioned related technologies that the excitation source of the fuse has low safety in use and high cost, which affects the safety in use and manufacturing cost of the fuse, and further affects the safety in use and manufacturing cost of the battery system and the electrical equipment.

[0006] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0007] A first aspect of an embodiment of the present application provides a fuse, comprising:

[0008] A shell having a cavity therein and a conductive mechanism therein;

[0009] The excitation mechanism comprises a liquid medium and an excitation electrode, wherein the liquid medium is placed in the cavity; a part of the excitation electrode is immersed in the liquid medium in the cavity; and the liquid medium is used to form a force under the excitation action of the excitation electrode;

[0010] The disconnecting mechanism is located in the shell, and is used for moving toward the conductive mechanism and disconnecting the conductive mechanism under the push of the action force formed by the excitation mechanism.

[0011] The embodiment of the present application provides a fuse, by immersing a part of the excitation electrode in the liquid medium in the cavity, according to the liquid-electric effect, the excitation electrode excites the liquid medium, so that the liquid medium forms shock wave energy under the action of the excitation electrode, and the shock wave energy is used as the force to push the breaking mechanism to move toward the conductive mechanism and disconnect the conductive mechanism. Compared with the method of using gunpowder explosion to drive the breaking device to move, in the present application, the liquid medium will be excited and generate a reaction force only when the excitation electrode receives a signal and releases the excitation voltage. Therefore, the method of the present application of exciting the liquid medium by the excitation electrode is safer and more reliable.

[0012] Furthermore, compared with gunpowder, the cost of the excitation electrode and the liquid medium is relatively lower, which is conducive to reducing the manufacturing cost of the fuse.

[0013] Based on the above technical solution, the present application can also be improved as follows.

[0014] In a possible implementation, the inner wall of the cavity includes an arc-shaped inner wall, and the arc-shaped inner wall is recessed toward the outside of the shell;

[0015] The arc-shaped inner wall is used to reflect the energy generated by the liquid phase medium under the excitation action of the excitation electrode toward the center of the cavity to form the force that pushes the breaking mechanism.

[0016] In this way, by setting a part of the inner wall of the cavity as an arc-shaped inner wall recessed toward the outside of the shell, the energy generated by the liquid medium under the action of the excitation electrode can be reflected toward the center of the cavity, thereby reducing the diffusion of energy to the surroundings, reducing energy loss, and increasing the strength of the force that drives the breaking mechanism, thereby achieving a stronger force under the same excitation voltage.

[0017] In a possible implementation, in the height direction of the cavity, the arc-shaped inner wall is provided with a plurality of annular grooves arranged at intervals.

[0018] In this way, in the radial direction of the annular groove, due to the distance difference between the bottom of the annular groove and the inner wall of the cavity, the energy generated by the liquid medium under the action of the excitation electrode will have a time difference when reaching the groove body of the annular groove and the inner wall of the cavity. Therefore, the force diffused to the inner wall of the cavity can be absorbed and dispersed in multiple stages by the bottom of the groove and the inner wall of the cavity, which can reduce the impact damage of the energy generated by the liquid medium when it is excited to the shell, reduce the probability of damage to the shell, and increase the service life of the fuse.

[0019] In a possible implementation, the inner wall of the cavity further includes a conical inner wall;

[0020] The large diameter end of the tapered inner wall is connected to the arc-shaped inner wall, and the small diameter end of the tapered inner wall faces the breaking mechanism. The tapered inner wall is used to guide the force toward the breaking mechanism.

[0021] In this way, by setting a conical inner wall on the inner wall of the cavity and making the small diameter end of the conical inner wall face the breaking mechanism, the force can be gathered and guided toward the breaking mechanism through the structural characteristics of the conical inner wall, so as to improve the directionality of the action, increase the strength of the force, and improve the driving effect on the breaking mechanism.

[0022] In a possible implementation, a buffer structure is provided in the housing;

[0023] The inner wall of the buffer structure forms the cavity, and the buffer structure is used to absorb part of the impact energy generated when the liquid medium is excited.

[0024] In this way, by arranging the liquid medium in the cavity surrounded by the inner wall of the buffer structure, the force diffused to the inner wall of the cavity can be absorbed by the buffer structure, thereby reducing the probability of cracking and damage of the shell due to excessive force.

[0025] In a possible implementation, the excitation electrode includes a first positive electrode column and a first negative electrode column inserted into the shell;

[0026] The first positive pole column has a positive excitation end, and the first negative pole column has a negative excitation end. Both the positive excitation end and the negative excitation end are immersed in the liquid medium, and the excitation voltage is released between the positive excitation end and the negative excitation end.

[0027] In this way, by generating an excitation voltage between the positive excitation end and the negative excitation end immersed in the liquid medium to excite the liquid medium, it is possible to increase the pressure in the cavity by vaporizing the liquid medium to form a force acting on the breaking mechanism. Compared with the method of generating driving force through gunpowder explosion, it is safer and more reliable, has lower connection cost, can improve the safety of fuse use and reduce the manufacturing cost of the fuse.

[0028] In a possible implementation, the positive excitation end has a first flange, the negative excitation end has a second flange corresponding to the first flange, there is a gap between the first flange and the second flange, and the first flange and the second flange release the excitation voltage to the liquid medium through the gap.

[0029] In this way, by setting the corresponding first flange and second flange, the voltage can be released between the gap between the first flange and the second flange, and by adjusting the size of the gap between the flange and the second flange, as well as the number of the first flange and the second flange, the voltage released between the positive excitation end and the negative excitation end can be flexibly adjusted, thereby adjusting the size of the force formed after the liquid medium is excited, thereby improving the adjustable flexibility and practicality of the excitation mechanism.

[0030] In a possible implementation, the breaking mechanism includes:

[0031] Insulating housing;

[0032] A melt is disposed in the insulating housing;

[0033] The first conductive member and the second conductive member are respectively disposed at two opposite ends of the insulating housing, and the first conductive member is electrically connected to the second conductive member through the fuse.

[0034] In this way, when the disconnecting mechanism and the conducting mechanism are connected, the disconnecting mechanism disconnects the conducting mechanism by melting the fuse. Compared with the method of using a cutter structure to cut the conductor to disconnect the conducting mechanism, the fuse has a simple structure and has high reliability and low failure rate due to the lack of moving parts. The method of melting the fuse is low-cost, and the disconnecting mechanism can be reused by simply replacing the fuse, with low maintenance costs.

[0035] In a possible implementation, the melt has at least one fuse portion along the length direction of the melt.

[0036] In this way, by providing the fuse part, the current is blown by the fuse part when passing through the fuse, thereby facilitating the blowing of the fuse, increasing the blowing speed of the fuse, and further increasing the speed at which the disconnecting mechanism disconnects from the conducting mechanism.

[0037] In a possible implementation, the fuse further includes a plurality of connecting parts, the fuse part is disposed between two adjacent connecting parts, and the current carrying capacity of the fuse part is smaller than the current carrying capacity of the connecting part.

[0038] By making the current carrying capacity of the fuse part smaller than that of the connecting part, the fuse part can be melted before the connecting part, thereby achieving rapid melting of the fuse and increasing the speed at which the disconnecting mechanism disconnects the conductive mechanism.

[0039] In a possible implementation, an arc extinguishing medium is filled between the melt and the inner wall of the insulating shell.

[0040] In this way, by filling the arc extinguishing medium between the fuse and the inner wall of the insulating shell, the probability of the fuse arcing when the current passes through the fuse can be reduced, thereby improving the safety of the disconnecting mechanism.

[0041] In a possible implementation, the conductive mechanism includes:

[0042] a first conductor;

[0043] a second conductor, spaced apart from the first conductor;

[0044] a conductive block connected to the disconnecting mechanism, and when the conductive block is in a first position, two ends of the conductive block are electrically connected to the first conductor and the second conductor respectively, so that the fuse is in a conducting state;

[0045] When the conductive block is in the second position, the first conductor and the second conductor are electrically connected to the disconnecting mechanism respectively, and the disconnecting mechanism is melted under the action of the current of the conductive mechanism to disconnect the electrical connection between the first conductor and the second conductor, so that the fuse is in a disconnected state.

[0046] In this way, the conductive mechanism includes a first conductor, a second conductor and a conductive block, which can simplify the structure of the conductive mechanism and improve the assembly efficiency of the fuse. When the conductive block is in the first position, the first conductor and the second conductor are electrically connected through the conductive block and the fuse is in a conducting state. Since the conductive block does not need to consider the problem of melting, the current carrying capacity of the conductive block can adapt to the current intensity of the conductive mechanism, thereby ensuring the current carrying capacity of the fuse when the battery system does not fail.

[0047] When the conductive block is in the second position, the first conductor and the second conductor are electrically connected to the disconnecting mechanism, and the disconnecting mechanism is melted under the action of the current of the conductive mechanism to disconnect the electrical connection between the first conductor and the second conductor, and the fuse is in a disconnected state. This allows the fuse to maintain a high current-carrying capacity when the battery system does not fail, and can quickly blow through the disconnecting mechanism when the battery system fails, thereby improving the practicality and reliability of the fuse.

[0048] In a possible implementation, the first conductor has a first sliding cavity, and the second conductor has a second sliding cavity spaced apart from and opposite to the first sliding cavity.

[0049] The conductive block and the disconnecting mechanism are slidably arranged in the first sliding cavity and the second sliding cavity.

[0050] In this way, by providing the first sliding cavity and the second sliding cavity, the conductive block and the disconnecting mechanism can be guided to move along the axial direction of the sliding cavity, thereby improving the movement stability of the conductive block and the disconnecting mechanism during the pushing process.

[0051] In a possible implementation, the housing further comprises an arc extinguishing chamber, the arc extinguishing chamber is located relatively below the cavity, and parts of the first conductor and the second conductor are located in the arc extinguishing chamber;

[0052] The arc extinguishing chamber is filled with an arc extinguishing medium.

[0053] In this way, by setting up an arc extinguishing chamber, positioning partial structures of the first conductor and the second conductor in the arc extinguishing chamber, and filling the arc extinguishing chamber with an arc extinguishing medium, the probability of arcing of the conductive block during movement can be reduced, and the heat generated during the movement of the conductive block can be absorbed, thereby improving the heat dissipation capacity of the fuse.

[0054] In a possible implementation, it further includes a transmission mechanism;

[0055] The transmission mechanism is arranged between the excitation mechanism and the disconnection mechanism, and is used for pushing the disconnection mechanism to move toward the conductive mechanism under the drive of the excitation mechanism.

[0056] By providing a transmission mechanism so that the transmission mechanism drives the disconnecting mechanism to move under the drive of the excitation mechanism, it is possible to avoid direct electrical connection between the excitation electrode and the disconnecting mechanism through the liquid medium, thereby preventing the fuse from being damaged.

[0057] In a possible implementation, the transmission mechanism includes:

[0058] a catheter, connected to the cavity;

[0059] An insulating push rod is movably disposed in the conduit, and one end of the insulating push rod facing the cavity is in contact with the liquid medium;

[0060] The insulating push rod moves toward the disconnecting mechanism under the driving of the excitation mechanism.

[0061] In this way, the transmission mechanism includes a conduit and an insulating push rod moving in the conduit, which can simplify the manufacturing process of the transmission mechanism and reduce the manufacturing cost of the transmission mechanism, thereby simplifying the manufacturing process of the fuse and reducing the manufacturing cost of the fuse.

[0062] In a possible implementation, the transmission mechanism further includes a sealing ring;

[0063] The sealing ring is sleeved on the outer peripheral wall of the end of the insulating push rod facing the cavity, and the sealing ring abuts against the inner side wall of the conduit.

[0064] In this way, by arranging a sealing ring on the transmission mechanism, it is possible to prevent the liquid medium from leaking into the gap between the inner wall of the conduit and the outer wall of the insulating push rod, and prevent the liquid medium from further flowing from the conduit to the disconnecting mechanism, thereby improving the safety and reliability of the fuse.

[0065] A second aspect of an embodiment of the present application provides a battery system, which includes the fuse as described above.

[0066] In this way, by using the above-mentioned fuse, the battery system can improve the safety of use of the battery system and reduce the manufacturing cost of the battery system.

[0067] A third aspect of the embodiments of the present application provides an electrical equipment, which includes an electrical device,

[0068] And the fuse as described above, the fuse is arranged in the electrical device;

[0069] Alternatively, the battery system as described above is used to supply power to the electrical device.

[0070] In this way, by using the above-mentioned battery system in the electric equipment, the use safety of the electric equipment can be improved and the manufacturing cost of the electric equipment can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0072] Figure 1 A schematic diagram of the structure of a fuse provided in an embodiment of the present application;

[0073] Figure 2 A cross-sectional schematic diagram of a fuse provided in an embodiment of the present application;

[0074] Figure 3 A cross-sectional schematic diagram of an excitation mechanism and a transmission mechanism of a fuse provided in an embodiment of the present application;

[0075] Figure 4 A schematic cross-sectional view of a disconnecting mechanism of a fuse provided in an embodiment of the present application;

[0076] Figure 5 A partial circuit diagram of the excitation mechanism and control system provided in an embodiment of the present application.

[0077] Description of reference numerals:

[0078] 1-boost; 2-diode; 3-capacitor; 4-protection resistor; 5-trigger switch;

[0079] 100-housing;

[0080] 110- cavity; 120- arc extinguishing chamber; 130- arc extinguishing medium;

[0081] 111-arc inner wall; 112-annular groove; 113-conical inner wall;

[0082] 200-conductive mechanism;

[0083] 210 - first conductor; 220 - second conductor; 230 - conductive block; 240 - second positive pole;

[0084] 250-second negative pole;

[0085] 211 - first sliding cavity; 221 - second sliding cavity;

[0086] 300- incentive agencies;

[0087] 310-liquid medium; 320-excitation electrode;

[0088] 321 - first positive pole; 322 - first negative pole;

[0089] 321a-positive excitation terminal; 322a-negative excitation terminal; 3211-first flange;

[0090] 3221-second flange;

[0091] 400-breaking mechanism;

[0092] 410 - insulating shell; 420 - melt; 430 - first conductive member; 440 - second conductive member;

[0093] 421-fuse portion; 422-connection portion;

[0094] 500-buffer structure;

[0095] 600-transmission mechanism;

[0096] 610-catheter; 620-insulating push rod; 630-sealing ring. DETAILED DESCRIPTION

[0097] As described in the background technology, the excitation source of the fuse in the related technology has low safety in use and high cost, which affects the safety in use and manufacturing cost of the fuse, and further affects the safety in use and manufacturing cost of the battery system and electrical equipment.

[0098] The reason for this problem is that the excitation source in the related technology is gunpowder, and the principle of its excitation is to use the impact energy generated by the explosion of gunpowder to drive the breaking device to move. However, the use of gunpowder is subject to many restrictions, such as the relatively high amount of gunpowder used and the relatively high cost of gunpowder, and the poor stability of gunpowder. When the fuse is hit or impacted, the gunpowder is easy to explode, so the safety and working stability of the fuse are relatively poor, which will also affect the safety and manufacturing cost of the battery system and electrical equipment using the fuse.

[0099] In response to the above technical problems, the embodiments of the present application provide a fuse, a battery system and an electrical device. The fuse immerses a part of the excitation electrode in the liquid medium in the cavity. According to the liquid-electric effect, the excitation electrode excites the liquid medium so that the liquid medium forms shock wave energy under the action of the excitation electrode, and uses the shock wave energy as a force to push the disconnecting mechanism to move toward the conductive mechanism and disconnect the conductive mechanism. Compared with the method of using gunpowder explosion to drive the disconnecting device to move, in the present application, the liquid medium will be excited and generate a reaction force only when the excitation electrode receives a signal and releases the excitation voltage. Therefore, the method of the present application of exciting the liquid medium by the excitation electrode is safer and more reliable.

[0100] Furthermore, compared with gunpowder, the cost of the excitation electrode and the liquid medium is relatively lower, which is conducive to reducing the manufacturing cost of the fuse.

[0101] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0102] refer to Figure 1 and Figure 2 , an embodiment of the present application provides a fuse, which may include a housing 100 , an excitation mechanism 300 and a disconnecting mechanism 400 .

[0103] The housing 100 has a cavity 110 therein, and a conductive mechanism 200 is disposed therein. In some embodiments, the housing 100 may be a metal housing. The conductive mechanism 200 can be electrically connected to the circuit of the battery system so that the fuse can be in the circuit of the battery system, and the circuit of the battery system can be interrupted by cutting off the conductive mechanism 200 in the fuse.

[0104] The excitation mechanism 300 may include a liquid medium 310 and an excitation electrode 320 . The liquid medium 310 is placed in the cavity 110 , and a portion of the excitation electrode 320 is immersed in the liquid medium 310 in the cavity 110 . The liquid medium 310 is used to form a force under the excitation of the excitation electrode 320 .

[0105] refer to Figure 2 and Figure 5 In some embodiments, the excitation electrode 320 can be externally connected to the control circuit of the control system. When the control system detects a battery failure, the control circuit can transmit current to the excitation electrode 320, and enable one end of the excitation electrode 320 immersed in the liquid medium 310 to release an excitation voltage to the liquid medium 310. According to the principle of liquid-electric effect, the liquid medium 310 can generate shock wave energy under the action of the excitation voltage, and the shock wave energy can be used as a force to drive the breaking mechanism 400.

[0106] refer to Figure 5 The control circuit is electrically connected with a booster 1, a diode 2, a capacitor 3, a protection resistor 4 and a trigger switch 5. The booster inputs current, which is transmitted to the trigger switch 5 through the diode 2. When the trigger switch 5 is activated, the current is transmitted to the excitation mechanism 300, and the excitation mechanism 300 generates a force to push the breaking mechanism 400.

[0107] In some examples, the shock wave can be understood as the liquid medium 310 near the excitation electrode 320 rapidly vaporizes under the action of the excitation voltage and forms a high-pressure bubble. The bubble expands rapidly in a very short time, generating a strong mechanical shock wave in the liquid, namely, a shock wave. The shock wave can transfer energy through the liquid medium.

[0108] The disconnecting mechanism 400 is disposed in the housing 100 . The housing 100 may have a channel for the disconnecting mechanism 400 to move. The disconnecting mechanism 400 is used to move toward the conductive mechanism 200 and disconnect the conductive mechanism 200 under the force generated by the excitation mechanism 300 .

[0109] In some embodiments, the disconnecting mechanism 400 may be a shearing mechanism. For example, the excitation mechanism 300 can drive the shearing mechanism to move to cut off the conductive mechanism 200, thereby disconnecting the circuit of the battery system.

[0110] In other embodiments, the disconnecting mechanism 400 can also be a current-limiting conductor, and the excitation mechanism 300 can drive the current-limiting conductor to electrically connect the conductive mechanism 200 and the circuit of the battery system. Since the current-limiting conductor has poor current-carrying capacity, it is easy to melt, thereby interrupting the circuit of the battery system.

[0111] An embodiment of the present application provides a fuse, which immerses a portion of the excitation electrode 320 in the liquid medium 310 in the cavity 110. According to the liquid-electric effect, the liquid medium 310 is excited by the excitation electrode 320, so that the liquid medium 310 forms shock wave energy under the action of the excitation electrode 320, and the shock wave energy is used as a force to push the breaking mechanism 400, so as to push the breaking mechanism 400 to move toward the conductive mechanism 200 and disconnect the conductive mechanism 200.

[0112] Compared with the method of using gunpowder explosion to drive the breaking device to move, in the present application, the liquid medium 310 will be excited and produce a reaction force only when the excitation electrode 320 receives a signal and releases the excitation voltage. Therefore, the method of the present application of exciting the liquid medium 310 by the excitation electrode 320 to produce an effect is safer and more reliable. The liquid medium 310 and the excitation electrode 320 can also be used repeatedly, reducing the use cost of the fuse.

[0113] Furthermore, compared with gunpowder, the cost of the excitation electrode 320 and the liquid medium 310 is relatively lower, which is beneficial to reducing the manufacturing cost of the fuse.

[0114] refer to Figure 2 and Figure 3 In some embodiments, the inner wall of the cavity 110 may include an arc-shaped inner wall 111 , and the arc-shaped inner wall 111 is recessed toward the outside of the shell 100 .

[0115] The arc-shaped inner wall 111 is used to reflect the energy generated by the liquid medium 310 under the excitation of the excitation electrode 320 toward the center of the cavity 110 to form a force to push the separating mechanism 400 .

[0116] In this way, by setting a part of the inner wall of the cavity 110 as an arc-shaped inner wall 111 that is recessed toward the outside of the shell 100, the energy generated by the liquid medium 310 under the action of the excitation electrode 320 can be reflected toward the center of the cavity 110, thereby reducing the diffusion of energy to the surroundings and reducing energy loss. It can also increase the strength of the force that pushes the breaking mechanism 400, making it easier to achieve a stronger force under the same excitation voltage.

[0117] In some embodiments, Figure 3 Based on the orientation in the horizontal direction (such as Figure 3As shown by the arrow X in the figure, the height of the arc-shaped inner wall 111 is at the same level as the part of the excitation electrode 320 immersed in the liquid medium 310. In this way, when the excitation electrode 320 releases voltage into the liquid medium 310, the shock wave energy diffuses in all directions with the excitation electrode 320 as the source. When the shock wave energy diffuses to the arc-shaped inner wall 111, the arc-shaped inner wall 111 can reflect the shock wave energy toward the center of the housing 100 through its arc surface, so that more shock wave energy is gathered to form a reaction force.

[0118] refer to Figure 3 In some embodiments, in the height direction of the cavity 110 (eg Figure 3 As shown by arrow Y in FIG. 1 , the arc-shaped inner wall 111 is provided with a plurality of annular grooves 112 arranged at intervals.

[0119] In this way, in the radial direction of the annular groove, due to the distance difference between the bottom of the annular groove and the inner wall of the cavity 110, the energy generated by the liquid medium 310 under the action of the excitation electrode 320 will have a time difference when reaching the groove body of the annular groove and the inner wall of the cavity 110, so that the force diffused to the inner wall of the cavity 110 can be absorbed and dispersed in multiple stages by the bottom of the groove and the inner wall of the cavity 110, which can reduce the impact damage of the energy generated by the liquid medium 310 when being excited to the shell 100, reduce the probability of damage to the shell 100, and increase the service life of the fuse.

[0120] refer to Figure 3 In some embodiments, the inner wall of the cavity 110 may further include a conical inner wall 113 , that is, a portion of the cavity 110 is approximately conical, and the conical inner wall 113 is closer to the breaking mechanism 400 relative to the arc-shaped inner wall 111 .

[0121] The large diameter end of the tapered inner wall 113 is connected to the arc-shaped inner wall 111 , and the small diameter end of the tapered inner wall 113 faces the separating mechanism 400 . The tapered inner wall 113 is used to guide the force toward the separating mechanism 400 .

[0122] In this way, by setting a conical inner wall 113 on the inner wall of the cavity 110 and making the small diameter end of the conical inner wall 113 face the separating mechanism 400, the force can be gathered and guided toward the separating mechanism 400 through the structural characteristics of the conical inner wall 113, so as to improve the directionality of the action, increase the strength of the force, and improve the driving effect on the separating mechanism 400.

[0123] In some embodiments, the inner diameter of the large diameter end of the conical inner wall 113 can be less than or equal to the minimum value of the inner diameter of the curved wall, so that the force can begin to gather and guide toward the separating mechanism 400 when the curved inner wall 111 in the cavity 110 enters the conical inner wall 113.

[0124] refer to Figure 2 and Figure 3 In some embodiments, a buffer structure 500 is disposed in the housing 100. The inner wall of the buffer structure 500 forms a cavity 110, and the buffer structure 500 is used to absorb part of the impact energy generated when the liquid medium 310 is excited.

[0125] Thus, by disposing the liquid medium 310 in the cavity 110 surrounded by the inner wall of the buffer structure 500 , the buffer structure 500 can absorb the force diffused to the inner wall of the cavity 110 , thereby reducing the probability of the shell 100 being cracked and damaged due to excessive force.

[0126] In a possible implementation, the inner wall of the buffer structure 500 may have an arc-shaped inner wall 111 and a conical inner wall 113 , and the arc-shaped inner wall 111 may be provided with a plurality of annular grooves 112 spaced apart in the height direction.

[0127] In some embodiments, the buffer structure 500 may be a silicone buffer structure 500 or a rubber buffer structure 500 .

[0128] refer to Figure 3 In some embodiments, the excitation electrode 320 may include a first positive electrode column 321 and a first negative electrode column 322 inserted into the housing 100. The first positive electrode column 321 and the first negative electrode column 322 may be inserted into the top of the housing 100 and spaced apart. The first positive electrode column 321 and the first negative electrode column 322 located outside the housing 100 can be electrically connected to the control system.

[0129] The first positive electrode column 321 has a positive excitation end 321a, and the first negative electrode column 322 has a negative excitation end 322a. The positive excitation end 321a and the negative excitation end 322a are both immersed in the liquid medium 310. There is a gap between the positive excitation end 321a and the negative excitation end 322a. The first positive electrode column 321 and the first negative electrode column 322 can release the excitation voltage through the gap between the positive excitation end 321a and the negative excitation end 322a.

[0130] In this way, by generating an excitation voltage between the positive excitation terminal 321a and the negative excitation terminal 322a immersed in the liquid medium 310 to excite the liquid medium 310, it is possible to increase the pressure in the cavity 110 by vaporizing the liquid medium 310 to form a force acting on the breaking mechanism 400. Compared with the method of generating driving force through gunpowder explosion, it is safer and more reliable, has lower connection cost, can improve the safety of fuse use and reduce the manufacturing cost of fuse.

[0131] refer to Figure 3In some embodiments, the positive excitation terminal 321a has a first flange 3211, and the negative excitation terminal 322a has a second flange 3221 corresponding to the first flange 3211. There is a gap between the first flange 3211 and the second flange 3221, and the first flange 3211 and the second flange 3221 release the excitation voltage to the liquid medium 310 through the gap.

[0132] In this way, by setting the corresponding first flange 3211 and the second flange 3221, the voltage can be released in the gap between the first flange 3211 and the second flange 3221, and by adjusting the size of the gap between the flange and the second flange 3221, and the number of the first flange 3211 and the second flange 3221, the voltage released between the positive excitation terminal 321a and the negative excitation terminal 322a can be flexibly adjusted, and then the size of the force formed after the liquid medium 310 is excited can be adjusted, thereby improving the adjustable flexibility and practicality of the excitation mechanism 300.

[0133] In some embodiments, other conditions are kept unchanged, and only the gap between the first flange 3211 and the second flange 3221 is changed, resulting in changes in the excitation intensity as shown in Table 1 below.

[0134] It can be seen from Table 1 that, compared with the excitation intensity generated by using explosives within the safe range (excitation intensity is 5MPa-10MPa), the force generated by the shock wave energy generated by the excitation voltage released by the excitation electrode 320 to the liquid medium 310 is stronger, which can reach 15MPa.

[0135] Table 1. Changes in excitation intensity caused by gap changes

[0136]

[0137] In some embodiments, there may be a plurality of first flanges 3211 and second flanges 3221, and each first flange 3211 is disposed correspondingly to a second flange 3221. The plurality of first flanges 3211 may be arranged at intervals in the axial direction of the first positive electrode column 321, and the plurality of second flanges 3221 may be arranged at intervals in the axial direction of the first negative electrode column 322.

[0138] Furthermore, the gap between the first flange 3211 and the second flange 3221 can be adjusted by first adjusting the outer diameters of the first flange 3211 and the second flange 3221, thereby adjusting the excitation voltage released to the liquid medium 310 and further adjusting the force generated by the shock wave energy.

[0139] refer to Figure 4 In some embodiments, the disconnecting mechanism 400 may include an insulating housing 410 , a fuse 420 , a first conductive member 430 , and a second conductive member 440 .

[0140] The insulating housing 410 may be a tubular structure, for example, the insulating housing 410 may be an insulating ceramic tube structure. The melt 420 is disposed in the insulating housing 410 , and the melt 420 may be made of a metal material with a strong current limiting capability, so as to increase the melting speed of the melt 420 .

[0141] In some embodiments, the current carrying capacity of the fuse 420 can be smaller than the current peak when the battery system circuit is short-circuited, so that when the circuit reaches the short-circuit current peak, the tab can be disconnected by the melting of the fuse 420 to achieve the disconnection of the conductive mechanism 200.

[0142] The first conductive member 430 and the second conductive member 440 are respectively disposed at two opposite ends of the insulating housing 410 in the axial direction, and the first conductive member 430 is electrically connected to the second conductive member 440 through the fuse 420. The first conductive member 430 and the second conductive member 440 can be metal sheets, which are disposed at two ends of the insulating housing 410 and seal the ports at both ends.

[0143] In this way, when the disconnection mechanism 400 and the conductive mechanism 200 are connected, the disconnection mechanism 400 disconnects the conductive mechanism 200 by fusing the fuse 420 in the insulating housing 410. Compared with the method of using a cutter structure to cut the conductor to disconnect the conductive mechanism 200, the fuse 420 has a simple structure and has high reliability and low failure rate due to the lack of moving parts. The method of fusing the fuse 420 is low-cost, and the disconnection mechanism 400 can be reused by simply replacing the fuse 420, with low maintenance costs.

[0144] refer to Figure 4 In some embodiments, the melt 420 has at least one fuse 421 along the length direction of the melt 420. The melt 420 may have one fuse 421, or may have two, three, six or even more fuses 421. The plurality of fuses 421 may be arranged at intervals along the length direction of the melt 420.

[0145] In some embodiments, the current-carrying capacity of the fuse part 421 may be reduced to improve the current-limiting capability of the fuse part 421 , thereby making the fuse part 421 more likely to fuse than other parts of the fuse 420 .

[0146] For example, the current carrying capacity of the current at the fuse part 421 can be reduced by reducing the cross-sectional area of ​​the fuse part 421. Specifically, a through hole can be opened on the fuse 420 along the width direction of the fuse 420 to reduce the cross-sectional area of ​​the fuse 420 near the through hole, thereby reducing the current carrying capacity of the fuse part 421. It can be understood that the cross-sectional area of ​​the fuse part 421 of the fuse 420 can be specifically designed according to the actual current limiting requirements, and the number of the fuse parts 421 can be designed.

[0147] Thus, by providing the fuse part 421 , when the current passes through the fuse 420 , the fuse part 421 is blown, thereby facilitating the blowing of the fuse 420 , increasing the blowing speed of the fuse 420 , and further increasing the speed at which the disconnecting mechanism 400 is disconnected from the conductive mechanism 200 .

[0148] refer to Figure 4 In some embodiments, the fuse 420 may further include a plurality of connecting parts 422, the fuse part 421 is disposed between two adjacent connecting parts 422, and the current carrying capacity of the fuse part 421 is less than the current carrying capacity of the connecting part 422. In the length direction of the fuse 420, the two outermost connecting parts are used to connect the first conductive member 430 and the second conductive member 440 respectively.

[0149] By making the current carrying capacity of the fuse part 421 smaller than the current carrying capacity of the connecting part 422 , the fuse part 421 can be melted before the connecting part 422 , thereby achieving rapid melting of the fuse 420 and increasing the speed at which the disconnecting mechanism 400 disconnects the conductive mechanism 200 .

[0150] refer to Figure 4 In some embodiments, the space between the melt 420 and the inner wall of the insulating shell 410 is filled with an arc extinguishing medium 130 , and the arc extinguishing medium 130 may be high-viscosity silicone oil or the like.

[0151] In this way, by filling the arc extinguishing medium 130 between the fuse 420 and the inner wall of the insulating shell 410 , the probability of arcing of the fuse 420 when the current passes through the fuse 420 can be reduced, thereby improving the safety of the disconnecting mechanism 400 .

[0152] refer to Figure 2 In some embodiments, the conductive mechanism 200 may include a first conductor 210, a second conductor 220, and a conductive block 230. Thus, the conductive mechanism 200 may include the first conductor 210, the second conductor 220, and the conductive block 230, thereby simplifying the structure of the conductive mechanism 200 and improving the assembly efficiency of the fuse.

[0153] The first conductor 210 can be disposed in the housing 100, and the first conductor 210 can be connected to the positive pole of the circuit of the battery system. The second conductor 220 can also be disposed in the housing 100 and spaced apart from the first conductor 210, and the second conductor 220 is located on the side of the first conductor 210 facing away from the excitation mechanism 300, and the second conductor 220 can be connected to the negative pole of the circuit of the battery system.

[0154] The conductive block 230 is connected to the disconnect mechanism 400, and when the conductive block 230 is in the first position, the two ends of the conductive block 230 are electrically connected to the first conductor 210 and the second conductor 220 respectively, so that the fuse is in a conducting state. It can be understood that the current carrying capacity of the conductive block 230 is greater than the current carrying capacity of the disconnect mechanism 400, and the current carrying capacity of the conductive block 230 is close to or greater than or equal to the current in the circuit of the battery system.

[0155] In this way, when the conductive block 230 is in the first position, the first conductor 210 and the second conductor 220 are electrically connected through the conductive block 230 and the fuse is in a conducting state. Since the conductive block 230 does not need to consider the problem of being blown, the current carrying capacity of the conductive block 230 can adapt to the current intensity of the conductive mechanism 200, thereby ensuring the current carrying capacity of the fuse and reducing the heat generation and heat loss of the fuse when the battery system does not fail.

[0156] When the conductive block 230 is in the second position, the first conductor 210 and the second conductor 220 are electrically connected to the disconnecting mechanism 400 respectively, and the disconnecting mechanism 400 is melted under the action of the current of the conductive mechanism 200 to disconnect the electrical connection between the first conductor 210 and the second conductor 220, so that the fuse is in a disconnected state and the circuit of the battery system is disconnected.

[0157] In this way, when the conductive block 230 is in the second position, the first conductor 210 and the second conductor 220 are electrically connected to the disconnecting mechanism 400, and the disconnecting mechanism 400 is melted under the action of the current of the conductive mechanism 200 to disconnect the electrical connection between the first conductor 210 and the second conductor 220, and the fuse is in a disconnected state, so that the fuse can maintain a high current carrying capacity when the battery system does not fail, and can be quickly melted by the disconnecting mechanism 400 when the battery system fails, thereby improving the practicality and reliability of the fuse.

[0158] refer to Figure 2In some embodiments, the first conductor 210 has a first sliding cavity 211, the second conductor 220 has a second sliding cavity 221 spaced apart from and opposite to the first sliding cavity 211, and the first sliding cavity 211 and the second sliding cavity 221 are coaxial and arranged opposite to each other. In this way, the first sliding cavity 211, the second sliding cavity 221, and the spaced area between the first sliding cavity 211 and the second sliding cavity 221 together form a sliding channel for the conductive block 230 and the disconnecting mechanism 400 to slide, and the conductive block 230 and the disconnecting mechanism 400 can be slidably arranged in the first sliding cavity 211 and the second sliding cavity 221.

[0159] In this way, by providing the first sliding cavity 211 and the second sliding cavity 221 , the conductive block 230 and the disconnecting mechanism 400 can be guided to move along the axial direction of the sliding cavity, thereby improving the movement stability of the conductive block 230 and the disconnecting mechanism 400 during the pushing process.

[0160] It should be noted that see Figure 2 As shown, a space may be provided in the housing 100 between the cavity 110 and the first sliding cavity 211.

[0161] The connecting channel, the first sliding cavity 211, the second sliding cavity 221, the spacing area between the first sliding cavity 211 and the second sliding cavity 221, and the connecting channel are coaxially arranged and together form a channel for the conductive block 230 and the disconnecting mechanism 400 to slide.

[0162] In some embodiments, the conductive mechanism 200 may further include two second positive poles 240 and two second negative poles 250 .

[0163] A portion of the second positive electrode column 240 is disposed in the housing 100 and electrically connected to the first conductor 210 , and another portion of the second positive electrode column 240 is located outside the housing 100 and electrically connected to a circuit of the battery system.

[0164] A portion of the second negative electrode column 250 is disposed in the housing 100 and electrically connected to the second conductor 220 , and another portion of the second negative electrode column 250 is located outside the housing 100 and electrically connected to the battery system circuit, so that the fuse is connected to the battery system circuit.

[0165] refer to Figure 2 In some embodiments, the housing 100 further includes an arc extinguishing chamber 120, the arc extinguishing chamber 120 is located relatively below the cavity 110, and parts of the first conductor 210 and the second conductor 220 are located in the arc extinguishing chamber 120, for example, the relative spacing between the first conductor 210 and the second conductor 220 is located in the arc extinguishing chamber 120, see Figure 2As shown, when the conductive block 230 moves to the first position to conduct the first conductor 210 and the second conductor 220, part of the conductive block 230 is located in the arc extinguishing chamber 120, and the arc extinguishing chamber 120 is filled with an arc extinguishing medium 130. The arc extinguishing medium 130 can be high-viscosity silicone oil or the like.

[0166] Specifically, the portion of the first conductor 210 where the first sliding cavity 211 is located can be located in the arc extinguishing chamber 120 , and the portion of the second conductor 220 where the second sliding cavity 221 is located can also be located in the arc extinguishing chamber 120 .

[0167] In this way, by setting up the arc extinguishing chamber 120, and making part of the structure of the first conductor 210 and the second conductor 220 located in the arc extinguishing chamber 120, and filling the arc extinguishing medium 130 in the arc extinguishing chamber 120, the probability of arcing of the conductive block 230 during movement can be reduced, and the heat generated during the movement of the conductive block 230 can be absorbed, thereby improving the heat dissipation capacity of the fuse.

[0168] In some embodiments, the outer wall of the conductive block 230 can abut against the inner wall of the first sliding cavity 211 and / or the second sliding cavity 221 , so that the first conductor 210 is electrically connected to the second conductor 220 through the conductive block 230 .

[0169] Similarly, the first conductive member 430 on the disconnecting mechanism 400 can abut against the inner wall of the first sliding cavity 211 , and the second conductive member 440 on the disconnecting mechanism 400 can abut against the inner wall of the second sliding cavity 221 , so that the first conductor 210 is electrically connected to the second conductor 220 through the disconnecting mechanism 400 .

[0170] refer to Figure 2 and Figure 3 In some embodiments, the fuse may further include a transmission mechanism 600 . The transmission mechanism 600 is disposed between the excitation mechanism 300 and the disconnection mechanism 400 . The transmission mechanism 600 is used to push the disconnection mechanism 400 to move toward the conductive mechanism 200 under the drive of the excitation mechanism 300 .

[0171] In this way, by providing the transmission mechanism 600 so that the transmission mechanism 600 pushes the disconnecting mechanism 400 to move under the drive of the excitation mechanism 300, it is possible to avoid direct electrical connection between the excitation electrode 320 and the disconnecting mechanism 400 through the liquid medium 310, thereby avoiding damage to the fuse.

[0172] refer to Figure 3In some embodiments, the transmission mechanism 600 may include a conduit 610 and an insulating push rod 620. The conduit 610 is in communication with the cavity 110. The insulating push rod 620 is movably disposed in the conduit 610, and one end of the insulating push rod 620 facing the cavity 110 contacts the liquid medium 310. The insulating push rod 620 moves toward the breaking mechanism 400 under the drive of the excitation mechanism 300.

[0173] In this way, the transmission mechanism 600 can simplify the manufacturing process of the transmission mechanism 600 and reduce the manufacturing cost of the transmission mechanism 600 by including the conduit 610 and the insulating push rod 620 moving in the conduit 610, thereby simplifying the manufacturing process of the fuse and reducing the manufacturing cost of the fuse.

[0174] refer to Figure 3 In some embodiments, the transmission mechanism 600 may further include a sealing ring 630 . The sealing ring 630 is sleeved on the outer peripheral wall of the end of the insulating push rod 620 facing the cavity 110 , and the sealing ring 630 abuts against the inner side wall of the conduit 610 .

[0175] In some embodiments, there may be two sealing rings 630 , and the two sealing rings 630 are respectively sleeved on both ends of the insulating push rod 620 in the axial direction.

[0176] In this way, by setting a sealing ring 630 on the transmission mechanism 600, the liquid medium 310 can be prevented from leaking into the gap between the inner wall of the conduit 610 and the outer wall of the insulating push rod 620, and the liquid medium 310 can be prevented from further flowing from the conduit 610 to the disconnecting mechanism 400, thereby improving the safety and reliability of the fuse.

[0177] In some embodiments, the insulating push rod 620 may further include an abutment section, the outer diameter of which is larger than the outer diameter of other positions on the insulating push rod 620. The abutment section can be used to abut the inner wall of the catheter 610, and can reduce the contact area between the insulating push rod 620 and the inner wall of the catheter 610, thereby reducing friction resistance and facilitating the transmission mechanism 600 to be pushed under the action of the excitation mechanism 300.

[0178] The embodiment of the present application also provides a battery system, which may include the above-mentioned fuse and a battery, and the battery is electrically connected to the fuse. In this way, by using the above-mentioned fuse, the battery system can improve the safety of the battery system and reduce the manufacturing cost of the battery system. When a fault occurs in the battery system, for example, when a short circuit occurs in the circuit of the battery system, the circuit of the battery system can be cut off in time by the fuse to avoid further deterioration of the fault of the battery system.

[0179] An embodiment of the present application also provides an electrical equipment, which may include an electrical device and the above-mentioned fuse. The fuse can be set in the electrical device to improve the safety of the electrical equipment and reduce the manufacturing cost of the electrical equipment.

[0180] In other embodiments, the power-consuming equipment may include a power-consuming device and a battery system as described above, wherein the battery system is used to supply power to the power-consuming device.

[0181] In this way, by using the above-mentioned battery system in the electric equipment, the use safety of the electric equipment can be improved and the manufacturing cost of the electric equipment can be reduced.

[0182] In some embodiments, the electrical equipment can be a vehicle or an energy storage device. The vehicle can be an electric vehicle / equipment (Electric Vehicle, referred to as EV), a pure electric vehicle equipment (Pure Electric Vehicle / Battery Electric Vehicle, referred to as PEV / BEV), a hybrid electric vehicle (HEV), an extended-range equipment (REEV), a plug-in hybrid electric vehicle (PHEV), and a new energy vehicle (New Energy Vehicle).

[0183] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0184] It should be noted that the phrases "in specific implementation", "in some embodiments", "in this embodiment", "exemplarily" and the like mentioned in the specification indicate that the described embodiment may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0185] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0186] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0187] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fuse, characterized in that: include: A shell having a cavity therein and a conductive mechanism therein; An excitation mechanism, comprising a liquid medium and an excitation electrode, wherein the liquid medium is placed in the cavity; A portion of the excitation electrode is immersed in the liquid medium in the cavity; The liquid phase medium is used to form a force under the excitation action of the excitation electrode; A disconnecting mechanism, located in the housing, and configured to move toward the conductive mechanism and disconnect the conductive mechanism under the action force generated by the excitation mechanism; The conductive mechanism comprises: a first conductor; a second conductor, spaced apart from the first conductor; a conductive block connected to the disconnecting mechanism, and when the conductive block is in a first position, two ends of the conductive block are electrically connected to the first conductor and the second conductor respectively, so that the fuse is in a conducting state, and the disconnecting mechanism is not electrically connected to the second conductor; When the conductive block is in the second position, the first conductor and the second conductor are electrically connected to the disconnecting mechanism respectively, and the disconnecting mechanism can be melted under the action of the current of the conductive mechanism to disconnect the electrical connection between the first conductor and the second conductor, so that the fuse is in a disconnected state.

2. The fuse according to claim 1, characterized in that: The inner wall of the cavity comprises an arc-shaped inner wall, and the arc-shaped inner wall is concave toward the outside of the shell; The arc-shaped inner wall is used to reflect the energy generated by the liquid phase medium under the excitation action of the excitation electrode toward the center of the cavity to form the force that pushes the breaking mechanism.

3. The fuse according to claim 2, characterized in that: In the height direction of the cavity, the arc-shaped inner wall is provided with a plurality of annular grooves arranged at intervals.

4. The fuse according to claim 2, characterized in that: The inner wall of the cavity also includes a tapered inner wall; The large diameter end of the tapered inner wall is connected to the arc-shaped inner wall, and the small diameter end of the tapered inner wall faces the breaking mechanism. The tapered inner wall is used to guide the force toward the breaking mechanism.

5. The fuse according to any one of claims 1 to 4, characterized in that: A buffer structure is provided in the shell; The inner wall of the buffer structure forms the cavity, and the buffer structure is used to absorb part of the impact energy generated when the liquid medium is excited.

6. The fuse according to any one of claims 1 to 4, characterized in that: The excitation electrode comprises a first positive pole and a first negative pole inserted into the shell; The first positive pole column has a positive excitation end, the first negative pole column has a negative excitation end, the positive excitation end and the negative excitation end are both immersed in the liquid medium, and an excitation voltage is released between the positive excitation end and the negative excitation end.

7. The fuse according to claim 6, characterized in that: The positive excitation end has a first flange, and the negative excitation end has a second flange corresponding to the first flange. There is a gap between the first flange and the second flange, and the first flange and the second flange release the excitation voltage to the liquid medium through the gap.

8. The fuse according to any one of claims 1 to 4, characterized in that: The breaking mechanism comprises: Insulating housing; A melt is disposed in the insulating housing; The first conductive member and the second conductive member are respectively disposed at two opposite ends of the insulating housing, and the first conductive member is electrically connected to the second conductive member through the fuse.

9. The fuse according to claim 8, characterized in that: The melt has at least one fuse portion along the length direction of the melt.

10. The fuse according to claim 9, characterized in that: The fuse also includes a plurality of connecting parts, the fuse part is arranged between two adjacent connecting parts, and the current carrying capacity of the fuse part is smaller than the current carrying capacity of the connecting part.

11. The fuse according to claim 8, characterized in that: An arc extinguishing medium is filled between the melt and the inner wall of the insulating shell.

12. The fuse according to claim 1, characterized in that: The first conductor has a first sliding cavity, and the second conductor has a second sliding cavity spaced apart from and opposite to the first sliding cavity. The conductive block and the disconnecting mechanism are slidably arranged in the first sliding cavity and the second sliding cavity.

13. The fuse according to claim 12, characterized in that: The housing further comprises an arc extinguishing chamber, the arc extinguishing chamber is located relatively below the cavity, and parts of the first conductor and the second conductor are located in the arc extinguishing chamber; The arc extinguishing chamber is filled with an arc extinguishing medium.

14. The fuse according to claim 1, characterized in that Also includes a transmission mechanism; The transmission mechanism is arranged between the excitation mechanism and the disconnection mechanism, and is used for pushing the disconnection mechanism to move toward the conductive mechanism under the drive of the excitation mechanism.

15. The fuse according to claim 14, characterized in that The transmission mechanism comprises: a catheter, connected to the cavity; An insulating push rod is movably disposed in the conduit, and one end of the insulating push rod facing the cavity is in contact with the liquid medium; The insulating push rod moves toward the disconnecting mechanism under the driving of the excitation mechanism.

16. The fuse according to claim 15, characterized in that The transmission mechanism also includes a sealing ring; The sealing ring is sleeved on the outer peripheral wall of the end of the insulating push rod facing the cavity, and the sealing ring abuts against the inner side wall of the conduit.

17. A battery system, characterized in that: Comprising the fuse according to any one of claims 1 to 16.

18. An electrical equipment, characterized in that: Including electrical devices, and the fuse according to any one of claims 1 to 16, wherein the fuse is arranged in the electrical device; Alternatively, the battery system as claimed in claim 17 is used to supply power to the electrical device.

Images