Fuse and electrical appliance

Abstract

The application provides a fuse and an electrical equipment, and relates to the technical field of fuses. The fuse comprises a shell and a heat exchange element. The shell is provided with a containing cavity, and a fuse is arranged in the containing cavity. The heat exchange element is arranged in the shell, and the heat exchange element is connected with the shell and can exchange heat with the shell. The fuse and the electrical equipment provided by the application can solve the problem that the fuse cannot normally play the circuit protection function under high-temperature or low-temperature working conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuses, in particular to a fuse and an electric equipment. BACKGROUND

[0002] The fuse is a key component for protecting the circuit of an electric vehicle, which can prevent the circuit from overloading and self-ignition.

[0003] In the prior art, when the electric vehicle accelerates rapidly, the fuse will continuously bear a large current, and the internal temperature will rise sharply. If the fuse is long-term exposed to the high-temperature environment, the internal fuse wire will be prone to cold resistance value increase due to metal thermal fatigue, and more prone to breakage, which affects the normal driving of the electric vehicle. In addition, in a low-temperature environment, the fuse has a long melting time, which cannot meet the rapid melting requirement, and it is difficult to timely cut off the current when the circuit is overloaded, thereby increasing the risk of circuit damage and affecting the safety of the electric vehicle.

[0004] Therefore, under high-temperature or low-temperature working conditions, the fuse is difficult to normally play the circuit protection function. CONTENT OF THE INVENTION

[0005] The present application provides a fuse and an electric equipment, which can solve the problem that the fuse is difficult to normally play the circuit protection function under high-temperature or low-temperature working conditions.

[0006] In a first aspect, the present application provides a fuse, comprising:

[0007] A housing, wherein the housing is provided with a containing cavity, and a fuse wire is arranged in the containing cavity;

[0008] A heat exchange element, wherein the heat exchange element is arranged in the housing, the heat exchange element is connected with the housing, and the heat exchange element can exchange heat with the housing.

[0009] As an optional implementation, the housing comprises a plurality of side plates connected in sequence, and the plurality of side plates surround the containing cavity;

[0010] At least one side plate is provided with a mounting groove, and the heat exchange element is arranged in the mounting groove.

[0011] As an optional implementation, the extension direction of the mounting groove is parallel to the extension direction of the housing, the mounting groove is provided with an entrance, and the heat exchange element can be arranged in the mounting groove through the entrance.

[0012] As an optional implementation, the plurality of side plates comprise a first side plate and a second side plate connected with each other, the first side plate is provided with a first mounting groove, and the second side plate is provided with a second mounting groove.

[0013] The heat exchange elements are multiple, and the multiple heat exchange elements include a refrigeration type heat exchange element and a second heat exchange element, the refrigeration type heat exchange element is arranged in the first mounting groove, and the second heat exchange element is arranged in the second mounting groove.

[0014] As an optional implementation, a connecting layer is arranged between the heat exchange element and the inner wall of the mounting groove, and the heat exchange element is connected to the shell through the connecting layer.

[0015] As an optional implementation, the heat exchange element includes a semiconductor heat exchanger.

[0016] As an optional implementation, the semiconductor heat exchanger has a first heat exchange end and a second heat exchange end arranged oppositely.

[0017] The first heat exchange end is arranged towards the accommodating cavity, and the first heat exchange end can exchange heat with the shell; and the second heat exchange end is arranged away from the accommodating cavity.

[0018] As an optional implementation, at least part of the heat exchange elements are arranged as refrigeration type heat exchange elements, and the refrigeration type heat exchange element includes a refrigeration end, the refrigeration end is arranged towards the accommodating cavity, the refrigeration end can refrigerate, and the refrigeration end can exchange heat with the shell.

[0019] As an optional implementation, the shell is provided with a heat dissipation fin.

[0020] The refrigeration type heat exchange element further includes a heating end, and the heating end is arranged away from the accommodating cavity.

[0021] The heat dissipation fin is arranged correspondingly to the heating end of the refrigeration type heat exchange element, and the heat dissipation fin can dissipate heat of the heating end of the refrigeration type heat exchange element.

[0022] As an optional implementation, a temperature measuring element is further included, a detection end of the temperature measuring element is arranged in the accommodating cavity, and the temperature measuring element is used to detect the temperature in the accommodating cavity.

[0023] As an optional implementation, both ends of the accommodating cavity in the extending direction have openings.

[0024] Both ends of the fuse are respectively connected with a terminal, the terminal is connected to the shell, and the terminal seals the opening.

[0025] In a second aspect, the application provides an electric device, including a device body and the fuse described above.

[0026] The device body is provided with a circuit board, both ends of the fuse are respectively connected with a terminal, and the terminal is connected to the circuit board.

[0027] The heat exchange element is provided with a lead-out wire connected to the circuit board.

[0028] The fuse and the electrical equipment provided by the application, the fuse comprises a shell and a heat exchange element, the shell is provided with a receiving cavity, and a fuse is arranged in the receiving cavity; the heat exchange element is arranged in the shell, the heat exchange element is connected with the shell, and the heat exchange element can exchange heat with the shell. By arranging the heat exchange element in the shell of the fuse, and connecting the heat exchange element with the shell and enabling the heat exchange element to exchange heat with the shell, the temperature inside the fuse can be effectively adjusted through the heat exchange between the heat exchange element and the shell in high-temperature and low-temperature environments, the performance of the fuse in extreme working conditions can be improved, and the protection capability of the fuse on the circuit is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0030] Figure 1 The installation state diagram of the fuse provided by the embodiment of the application on the circuit board is shown in the drawings;

[0031] Figure 2 The internal structure diagram of the fuse is shown in the drawings; Figure 1

[0032] The exploded view of the fuse without the terminal is shown in the drawings; Figure 3 Figure 1 The structure diagram of the heat exchange element of the fuse is shown in the drawings;

[0033] Figure 4 Another structure diagram of the heat exchange element of the fuse is shown in the drawings. Figure 3

[0034] Another structure diagram of the heat exchange element of the fuse is shown in the drawings. Figure 5 Figure 3 Legend of reference signs:

[0035] 100, shell; 101, receiving cavity; 102, mounting groove; 103, inlet and outlet;

[0036] 100, shell; 101, receiving cavity; 102, mounting groove; 103, inlet and outlet;

[0037] 110, side plate; 111, first side plate; 112, second side plate;

[0038] 200, terminal;

[0039] 300, fuse;

[0040] 400, arc extinguishing medium;

[0041] 500, heat exchange element; 501, refrigeration end; 502, heating end;

[0042] 510, first heat exchange end;​​

[0043] 520, second heat exchange end;

[0044] 600, connecting layer;

[0045] 800, heat dissipation fin;

[0046] 900, circuit board.

[0047] The specific embodiments of the present application have been shown through the above-described drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application concept in any way, but to illustrate the present application concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the embodiments of the present application.

[0049] In the embodiments of the present application, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] In addition, the terms "set", "connected", "fixed" should be understood broadly. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] The terms “first,” “second,” “third,” “fourth,” and the like in the description and in the claims of the present application, and above-mentioned drawings (if there are) are used to distinguish similar objects, and do not have to be used to describe a particular sequential or chronological order. It should be understood that the data thus used can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in other than the order shown or described herein.

[0052] In the embodiments of the present application, the words “exemplarily” or “for example” and the like are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as “exemplarily” or “for example” in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words “exemplarily” or “for example” and the like are used to present the relevant concept in a specific manner.

[0053] As described in the background, the fuse is a key component for protecting the circuit of the electric vehicle, which is usually composed of a metal terminal, an internal metal conductor fuse, an arc extinguishing medium and a shell, and can prevent the self-ignition of the circuit overload.

[0054] The rapid acceleration capability of the electric vehicle can reach 3 seconds within 100 kilometers. Under such super acceleration conditions, the battery and motor system of the vehicle need to continuously output a super large current, usually more than 2000 amperes. In this case, the metal conductor fuse inside the fuse will generate a large amount of heat due to the passage of the super large current, causing the temperature of the fuse to rise sharply, even exceeding 200℃. The fuse is in this high temperature environment for a long time, which will cause the cold resistance value to increase due to metal thermal fatigue, and the fuse is more prone to breakage, affecting the normal driving of the electric vehicle.

[0055] Under extremely low temperature conditions (such as below -30℃), the melting time of the fuse will be prolonged (more than 2 seconds). This delay cannot meet the demand of rapid melting, and it is difficult to cut off the current in time when the circuit is overloaded, increasing the risk of circuit damage and affecting the safety of the electric vehicle.

[0056] Therefore, under high temperature or low temperature working conditions, the fuse is difficult to normally play the circuit protection function.

[0057] Therefore, the embodiments of the present application provide a fuse and an electric device, wherein the fuse comprises a shell and a heat exchange member; the shell is provided with an accommodating cavity, and a fuse is arranged in the accommodating cavity; the heat exchange member is arranged in the shell, the heat exchange member is connected with the shell, and the heat exchange member can exchange heat with the shell.

[0058] When the fuse inside the fuse produces a large amount of heat and the temperature rises sharply, the heat exchange member can exchange heat with the shell to quickly absorb and dissipate the heat generated by the fuse, thereby reducing the temperature inside the fuse, which can avoid the fuse being in a high-temperature environment for a long time, effectively slow down the metal thermal fatigue of the fuse, prevent the cold resistance value of the fuse from increasing, reduce the risk of fuse fracture, and improve the reliability and service life of the fuse.

[0059] In a low-temperature environment, the heat exchange member can maintain the temperature inside the fuse by exchanging heat with the shell, thereby shortening the fuse blowing time, which can ensure that the current can be cut off in time when the circuit is overloaded, thereby protecting the circuit.

[0060] The fuse provided by the embodiment of the present application can effectively adjust the temperature inside the fuse in high-temperature and low-temperature environments by arranging the heat exchange members in the shell of the fuse, which are connected with the shell and can exchange heat with the shell, thereby improving the performance of the fuse in extreme working conditions and solving the problem that the traditional fuse cannot normally play the circuit protection function in high-temperature or low-temperature working conditions.

[0061] The technical solutions of the present application will be described in detail below in combination with the drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in detail in some embodiments.

[0062] In combination with Figures 1 to 3 As shown in the drawings, the first aspect of the embodiment of the present application provides a fuse, which includes a shell 100, the shell 100 is provided with a containing cavity 101, the containing cavity 101 is provided with a fuse 300; a heat exchange member 500, the heat exchange member 500 is arranged in the shell 100, the heat exchange member 500 is connected with the shell 100, and the heat exchange member 500 can exchange heat with the shell 100.

[0063] It should be noted that the fuse 300 is the core component of the fuse, and when the current passing through the fuse 300 exceeds the set value, the fuse 300 will be blown, thereby cutting off the circuit to prevent overload.

[0064] The containing cavity 101 surrounded by the shell 100 is filled with arc extinguishing medium 400, and the main function of the arc extinguishing medium 400 is to suppress and extinguish electric arc. The fuse 300 is arranged in the arc extinguishing medium 400, and when the fuse 300 is blown, electric arc can be generated, and the arc extinguishing medium 400 can quickly cool and disperse the electric arc energy, thereby preventing the electric arc from damaging the fuse and the surrounding circuit.

[0065] By setting the heat exchange member 500 in the shell 100, under high temperature conditions, the heat exchange member 500 can exchange heat with the shell 100 to quickly absorb and dissipate the heat generated by the fuse 300, reduce the internal temperature of the fuse, avoid the fuse 300 being in a high temperature environment for a long time, slow down the metal thermal fatigue phenomenon of the fuse 300, and reduce the risk of the fuse 300 breaking. Under low temperature conditions, the heat exchange member 500 can maintain the internal temperature of the fuse through heat exchange with the shell 100, thereby shortening the melting time of the fuse 300 and ensuring that the current can be cut off in time when the circuit is overloaded.

[0066] Therefore, through the heat exchange mechanism of the heat exchange member 500 and the shell 100, the fuse can maintain a stable working state under different temperature conditions, improve the reliability and service life, and enhance the protection capability of the circuit.

[0067] Specifically, the heat exchange member 500 is arranged inside the shell 100, so that the heat exchange member 500 can be relatively close to the fuse 300, reducing the length of the heat conduction path, improving the heat conduction efficiency, and facilitating faster absorption and dissipation of the heat generated by the fuse 300 or transmission of the heat to the area where the fuse 300 is located. Compared with the form of arranging the heat exchange member 500 on the outer surface of the shell 100, the internal temperature of the fuse can be adjusted more quickly, and the fuse can be prevented from operating in an extreme temperature range for a long time.

[0068] Specifically, the fuse provided by the embodiment of the present application can efficiently adjust the internal temperature of the fuse under high temperature and low temperature environments by arranging the heat exchange member 500 in the shell 100 of the fuse. The heat exchange member 500 is connected with the shell 100 and can exchange heat with the shell 100, which improves the performance of the fuse under extreme working conditions and solves the problem that the traditional fuse cannot normally play the circuit protection function under high temperature or low temperature working conditions.

[0069] In some embodiments, the shell 100 includes a plurality of side plates 110 connected in sequence, and the plurality of side plates 110 surround a containing cavity 101; at least one side plate 110 is provided with a mounting groove 102, and the heat exchange member 500 is arranged in the mounting groove 102.

[0070] The side plate 110 can serve as a protective structure of the fuse, and the containing cavity 101 surrounded by the plurality of side plates 110 can provide a stable working environment for the fuse 300.

[0071] It should be noted that the mounting groove 102 can be independent of the containing cavity 101, that is, the mounting groove 102 is not in communication with the containing cavity 101. When the heat exchange member 500 is installed in the mounting groove 102, the heat exchange member 500 does not contact the arc extinguishing medium 400 filled in the containing cavity 101.

[0072] In this way, the heat exchange element 500 can be kept isolated from the arc extinguishing medium 400, and the heat exchange element 500 can focus on temperature regulation without interfering with the arc suppression function of the arc extinguishing medium 400, and the heat conduction function of the heat exchange element 500 is also avoided from being affected by the arc extinguishing medium 400.

[0073] Specifically, by arranging the mounting groove 102 on the side plate 110, the heat exchange element 500 can be more closely integrated into the shell 100, not only improving the mounting stability of the heat exchange element 500, but also optimizing the heat exchange efficiency between the heat exchange element 500 and the inside of the shell 100. Under high temperature conditions, it helps to dissipate heat inside the fuse faster; under low temperature conditions, it helps to maintain the temperature stability inside the fuse.

[0074] In addition, integrating the heat exchange element 500 inside the side plate 110 also helps to ensure the compactness of the overall structure of the fuse, which can save the space required for installation of the fuse.

[0075] In some embodiments, the extension direction of the mounting groove 102 is parallel to the extension direction of the shell 100, the mounting groove 102 is provided with an access opening 103, and the heat exchange element 500 can be loaded into the mounting groove 102 through the access opening 103.

[0076] By making the extension direction of the mounting groove 102 parallel to the extension direction of the shell 100, when the heat exchange element 500 is installed in the mounting groove 102, it can cover the length direction of the fuse 300, so as to facilitate sufficient temperature regulation of the fuse 300.

[0077] The mounting groove 102 is provided with an access opening 103, and the heat exchange element 500 can enter and exit the mounting groove 102 through the access opening 103, so that the heat exchange element 500 can be conveniently inserted or removed from the mounting groove 102, allowing quick replacement or adjustment of the heat exchange element 500, reducing the complexity and time of the installation process, improving production and maintenance efficiency, and being adaptable to different working conditions or necessary maintenance.

[0078] It should be noted that the access opening 103 can be arranged on the side of the side plate 110 away from the accommodating cavity 101, facilitating insertion or removal of the heat exchange element 500 into or out of the mounting groove 102; or arranged at one end or both ends of the extension direction of the side plate 110, so that the installation and disassembly of the heat exchange element 500 can be carried out in the direction consistent with the extension direction of the shell 100.

[0079] In some embodiments, the plurality of side plates 110 includes a first side plate 111 and a second side plate 112 connected together, the first side plate 111 is provided with a first mounting groove, and the second side plate 112 is provided with a second mounting groove; the number of heat exchange elements 500 is multiple, and the multiple heat exchange elements 500 include a first heat exchange element and a second heat exchange element, the first heat exchange element is arranged in the first mounting groove, and the second heat exchange element is arranged in the second mounting groove.

[0080] It is understandable that the two side plates 110 at adjacent positions are provided with mounting grooves 102, and heat exchange components 500 are provided in the mounting grooves 102. This increases the heat exchange area between the heat exchange components 500 and the shell 100, which can quickly achieve heating or cooling of the inside of the fuse.

[0081] By setting mounting slots 102 on different side plates 110, the heat exchanger 500 can be distributed in different positions of the fuse. Different heat exchangers 500 can be optimized for different cold or hot areas inside the fuse to more effectively cover the key areas of the fuse, thereby managing the internal temperature more evenly and preventing local overheating or insufficient cooling.

[0082] For example, the heat exchanger 500 disposed in the first mounting slot can be used for cooling to operate when the fuse is overheated and to cool the inside of the fuse. The heat exchanger 500 disposed in the second mounting slot can be used for heating to operate when the ambient temperature is too low and to heat the inside of the fuse.

[0083] Specifically, combined Figure 2 As shown, there may be two first side plates 111, which are arranged parallel to each other and opposite to each other, distributed on the upper and lower sides of the fuse. When the internal temperature of the fuse is high, the heat exchange element 500 located inside the first side plate 111 can exchange heat with the housing 100 from the upper and lower sides to absorb and dissipate the internal heat of the fuse.

[0084] There may also be two second side plates 112, arranged in a row and opposite to each other, distributed on the left and right sides of the fuse. When the internal temperature of the fuse is low, the heat exchange element 500 located inside the second side plate 112 can exchange heat with the housing 100 from the left and right sides to transfer heat to the inside of the fuse.

[0085] In some embodiments, a connecting layer 600 is provided between the heat exchanger 500 and the inner wall of the mounting groove 102, and the heat exchanger 500 is connected to the housing 100 through the connecting layer 600.

[0086] By introducing a connecting layer 600 between the heat exchanger 500 and the mounting groove 102, the mechanical connection stability between the heat exchanger 500 and the mounting groove 102 can be enhanced, so that the heat exchanger 500 can be more firmly fixed in the housing 100, preventing the heat exchanger 500 from shifting or loosening.

[0087] It should be noted that the connecting layer 600 can be made of a material with good thermal conductivity, so that the heat exchanger 500 can more effectively transfer heat to the housing 100 or absorb heat from the housing 100.

[0088] For example, the connecting layer 600 may be a thermally conductive adhesive layer, which can firmly attach the heat exchanger 500 to the housing 100 while providing high thermal conductivity.

[0089] In some embodiments, the heat exchanger 500 includes a semiconductor heat exchanger.

[0090] Specifically, a semiconductor heat exchanger has a heat-absorbing end and a heat-releasing end that are arranged opposite to each other. The heat-absorbing end is the side that absorbs heat and is usually in contact with the object or fluid that needs to be cooled; the heat-releasing end is the side that releases heat and can be dissipated through a radiator or a fan.

[0091] Semiconductor heat exchangers have highly efficient thermoelectric conversion capabilities, enabling rapid heat transfer when current flows through them. By selectively positioning the heat-absorbing or heat-releasing end of the semiconductor heat exchanger towards the receiving cavity 101 for heat exchange with the inside of the fuse, the internal temperature of the fuse can be rapidly regulated under high and low temperature conditions.

[0092] Specifically, the cooling effect of the semiconductor heat exchanger can be precisely adjusted by controlling the current flowing into the semiconductor heat exchanger or by utilizing the electromotive force generated by the temperature difference, thereby achieving accurate control of the temperature of the fuse 300.

[0093] Combination Figure 3 , Figure 4 and Figure 5 As shown, for example, the semiconductor heat exchanger has a flat structure, which can be square, round or annular, as long as it can fit the shape of the outer shell side plate 110. This application embodiment does not impose any restrictions on this.

[0094] The semiconductor heat exchanger includes at least one of Peltier cooling elements, thermopile, and thermocouple cooling elements. The semiconductor heat exchanger utilizes the Peltier effect to achieve direct conversion between electrical energy and thermal energy (or cooling energy), enabling more efficient heat exchange with the shell 100 and improving energy utilization.

[0095] It should be noted that a Peltier thermocouple typically consists of multiple pairs of semiconductor materials (n-type and p-type) connected in series. When a direct current passes through the Peltier thermocouple, a heat difference is generated between its two sides. When the current flows in from the side with higher electronic conductivity (the endothermic side), electrons carry away some energy, causing this side to dissipate heat and become cooler. Simultaneously, on the side with lower electronic conductivity (the endothermic side), less energy is lost due to electron flow, and this side absorbs heat and becomes warmer.

[0096] When the fuse 300 needs to be cooled, the cooled side of the Peltier cooling plate faces the receiving cavity 101 and comes into contact with the housing 100, which can absorb the heat inside the housing 100, thereby reducing the temperature inside the housing 100 and preventing the fuse 300 from being at a high temperature for a long time.

[0097] When the fuse 300 needs to be heated, the heated side of the Peltier cooling plate faces the receiving cavity 101 and contacts the housing 100, which can transfer heat to the inside of the housing 100, thereby increasing the temperature inside the housing 100 and preventing the fuse 300 from being in a low temperature state for a long time, thus ensuring the normal melting of the fuse 300.

[0098] Peltier thermocouples are characterized by their small size and light weight, and their shape and size can be flexibly designed according to actual needs.

[0099] A thermopile is a device composed of multiple thermocouples connected in series or parallel, operating based on the Seebeck and Peltier effects. When current flows through the thermopile, it behaves similarly to a Peltier cooler, absorbing heat on one side and releasing heat on the other. The heat-absorbing side, through contact with the casing 100, conducts heat away from the interior of the casing 100. The heat-releasing side, through contact with the casing 100, transfers heat into the interior of the casing 100, thereby increasing the temperature inside the casing 100.

[0100] Thermocouple coolers can also achieve cooling through the reverse thermoelectric effect (i.e., the Peltier effect). In refrigeration applications, when an electric current is applied to the thermocouple cooler, one side absorbs heat while the other side releases heat. The side that absorbs heat conducts heat away from the interior of the housing 100 through contact with the housing 100. The side that releases heat transfers heat into the interior of the housing 100 through contact with the housing 100, thereby increasing the temperature inside the housing 100.

[0101] Combination Figure 2 and Figure 3 As shown, in some embodiments, the semiconductor heat exchanger has a first heat exchange end 510 and a second heat exchange end 520 disposed opposite to each other; the first heat exchange end 510 is disposed toward the receiving cavity 101 and can exchange heat with the housing 100; the second heat exchange end 520 is disposed away from the receiving cavity 101.

[0102] The design of the first heat exchange end 510 allows it to directly influence the temperature inside the fuse, rapidly regulating the temperature within the receiving cavity 101 through heat exchange with the housing 100. This helps to quickly cool down under high-temperature conditions or maintain temperature stability under low-temperature conditions.

[0103] The design of the second heat exchange end 520 enables it to release excess heat to the external environment or absorb heat from the outside to heat the interior, improving the overall thermal management capability of the fuse and ensuring its stable performance under various operating conditions.

[0104] Specifically, when the temperature inside the fuse is high and needs to be cooled, the first heat exchange end 510 can be the heat absorption end of a semiconductor heat exchanger. This end is positioned towards the receiving cavity 101 and can absorb the heat inside the housing 100. The heat is then transferred to the outside of the housing 100 through the second heat exchange end 520, which helps to reduce the temperature inside the fuse.

[0105] When the temperature inside the fuse is low and needs to be raised, the first heat exchange end 510 can be the heat dissipation end of a semiconductor heat exchanger. This end is positioned towards the receiving cavity 101 and can transfer the released heat to the inside of the housing 100, which helps to increase the temperature inside the fuse.

[0106] In practice, the direction of the current flowing into the semiconductor heat exchanger can be changed to switch between the heat absorption end and the heat release end, so that when cooling is required, the heat absorption end is oriented towards the receiving cavity 101, and when heating is required, the heat release end is oriented towards the receiving cavity 101.

[0107] Combination Figure 3 As shown, in some embodiments, at least part of the heat exchanger 500 is configured as a refrigeration type heat exchanger. The refrigeration type heat exchanger includes a refrigeration end 501, which is disposed toward the receiving cavity 101. The refrigeration end 501 is capable of refrigeration and heat exchange with the housing 100.

[0108] Cooling heat exchangers can be used to actively reduce the internal temperature of fuses, especially in high-temperature environments, and can effectively prevent metal thermal fatigue caused by overheating of the fuse 300.

[0109] The cooling end 501 of the cooling heat exchanger can transfer heat from inside the fuse to the external environment through thermoelectric effect or other cooling mechanisms, which can quickly reduce the temperature inside the fuse.

[0110] By oriented the cooling end 501 toward the receiving cavity 101, the cooling heat exchanger can directly act on the critical area of ​​the fuse, rapidly reducing the temperature around the fuse 300.

[0111] At least a portion of the heat exchanger 500 is configured as a heating type heat exchanger, which includes a heating end 502. The heating end 502 is disposed toward the receiving cavity 101 and is capable of generating heat and exchanging heat with the housing 100.

[0112] Heating-type heat exchangers can actively raise the internal temperature of the fuse, especially in low-temperature environments, effectively preventing excessively long melting times caused by excessively low fuse temperature.

[0113] The heating end 502 of the heating-type heat exchanger rapidly increases the internal temperature of the fuse through heating mechanisms such as thermoelectric effect or resistance heating. By oriented the heating end 502 toward the receiving cavity 101, the heating-type heat exchanger can directly act on the critical area of ​​the fuse, rapidly raising the temperature around the fuse wire 300.

[0114] For example, cooling heat exchangers can be distributed on one side of the housing 100, and heating heat exchangers can be distributed on the other side. This arrangement enables uniform temperature control, ensuring that the fuse maintains stable operation under any environmental conditions.

[0115] Combination Figures 1 to 3 As shown, in some embodiments, a heat sink 800 is provided on the housing 100; the cooling heat exchanger also includes a heating end 502, which is disposed away from the receiving cavity 101; the heat sink 800 is disposed corresponding to the heating end 502 of the cooling heat exchanger, and the heat sink 800 can dissipate heat from the heating end 502 of the cooling heat exchanger.

[0116] Understandably, when the cooling heat exchanger is a semiconductor heat exchanger, it also has a heating end 502. Since the heating end 502 is positioned away from the receiving cavity 101, the temperature of the heating end 502 will increase.

[0117] The heat sink 800 is disposed on the outer surface of the housing 100, and the position of the heat sink 800 corresponds to the heating end 502 of the cooling heat exchanger. This means that the heat sink 800 is connected to the heating end 502 of the cooling heat exchanger through part of the housing 100. The heat sink 800 can release the heat of the heating end 502 of the cooling heat exchanger to the external environment, thus avoiding the generation of heat load on the inside of the fuse.

[0118] By aligning the heat sink 800 with the heating end 502, heat can be conducted from the heating end 502 to the heat sink 800 and efficiently released into the environment through the heat sink 800. This arrangement prevents heat buildup from affecting the cooling efficiency of the cooling end 501.

[0119] In some embodiments, a temperature measuring element (not shown) is also included, the detection end of which is disposed within the receiving cavity 101, and the temperature measuring element is used to detect the temperature within the receiving cavity 101.

[0120] By introducing a temperature sensor into the fuse, real-time temperature feedback can be provided, which helps to detect abnormal temperatures of the fuse 300 in a timely manner, so as to adjust the working state of the refrigeration heat exchanger in a timely manner and prevent the fuse 300 from overheating or overcooling.

[0121] Specifically, the sensing end of the temperature measuring element can be positioned near the bottom of the receiving cavity 101.

[0122] In practice, when the temperature inside the cavity 101 measured by the temperature sensor is less than 0°C, the heat exchanger 500 can operate to activate the heating mode, and the heat-releasing end of the heat exchanger 500 heats the inside of the shell 100; when the temperature inside the cavity 101 measured by the temperature sensor is greater than 30°C, the heat exchanger 500 can operate to activate the cooling mode, and the heat-absorbing end of the heat exchanger 500 absorbs the heat inside the shell 100; when the temperature inside the cavity 101 measured by the temperature sensor is other values, the temperature sensor may not operate.

[0123] In some embodiments, the receiving cavity 101 has openings at both ends in the extending direction; the two ends of the fuse 300 are respectively connected to terminals 200, the terminals 200 are connected to the housing 100, and the terminals 200 close the openings.

[0124] It should be noted that the fuse 300 can be arranged in the cavity 101 in a direction parallel to the extension direction of the cavity 101. The two ends of the fuse 300 are respectively connected to terminals 200, and the terminals 200 are located at both ends of the extension direction of the housing 100.

[0125] With this configuration, the current can pass through the fuse along the shortest path, reducing the length of the current path and lowering resistance and power loss.

[0126] The terminal block 200 closes the openings at both ends of the extending direction of the receiving cavity 101, which can provide protection for the fuse 300 inside the receiving cavity 101.

[0127] The second aspect of this application provides an electrical device, including a device body and a fuse provided in any of the above embodiments; the device body is provided with a circuit board 900, and the two ends of the fuse 300 are respectively connected to terminals 200, which are connected to the circuit board 900; the heat exchanger 500 is provided with lead wires, which are connected to the circuit board 900.

[0128] The fuse has been described in detail in the above embodiments and will not be repeated here.

[0129] Understandably, circuit board 900 is the core control and connection component of the equipment, responsible for the transmission and processing of electrical signals. By incorporating circuit board 900 into the equipment body, effective control and management of fuses and other components of the equipment body can be achieved.

[0130] The heat exchanger 500 is equipped with lead wires, which are connected to the circuit board 900. The circuit board 900 can be connected to the power supply of the equipment body, and the power supply of the equipment body can be used to power the heat exchanger 500.

[0131] For example, the electrical equipment could be an electric vehicle.

[0132] Finally, it should be noted that those skilled in the art, upon considering the specification and practicing the application disclosed herein, will readily conceive of other embodiments of the present application. The embodiments of this application are intended to cover any variations, uses, or adaptations of the embodiments of this application that follow the general principles of the embodiments of this application and include common knowledge or customary technical means in the art not disclosed in the embodiments of this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the embodiments of this application are indicated by the following claims.

[0133] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments of this application is limited only by the appended claims.

Claims

1. A fuse, characterized in that, include: A housing (100) is provided with a receiving cavity (101), and a fuse (300) is provided in the receiving cavity (101); A heat exchanger (500) is disposed inside the housing (100), the heat exchanger (500) is connected to the housing (100), and the heat exchanger (500) can exchange heat with the housing (100).

2. The fuse according to claim 1, characterized in that, The housing (100) includes a plurality of side plates (110) connected in sequence, and the plurality of side plates (110) surround the receiving cavity (101); At least one of the side plates (110) is provided with a mounting groove (102), and the heat exchanger (500) is disposed in the mounting groove (102).

3. The fuse according to claim 2, characterized in that, The extension direction of the mounting groove (102) is parallel to the extension direction of the housing (100). The mounting groove (102) is provided with an inlet (103), and the heat exchanger (500) can be installed into the mounting groove (102) through the inlet (103).

4. The fuse according to claim 2, characterized in that, The multiple side plates (110) include a first side plate (111) and a second side plate (112) connected to each other. The first side plate (111) is provided with a first mounting groove, and the second side plate (112) is provided with a second mounting groove. The number of heat exchange components (500) is multiple, and the multiple heat exchange components (500) include a first heat exchange component and a second heat exchange component. The first heat exchange component is disposed in the first mounting groove, and the second heat exchange component is disposed in the second mounting groove.

5. The fuse according to claim 2, characterized in that, A connecting layer (600) is provided between the heat exchanger (500) and the inner wall of the mounting groove (102), and the heat exchanger (500) is connected to the housing (100) through the connecting layer (600).

6. The fuse according to any one of claims 1-5, characterized in that, The heat exchanger (500) includes a semiconductor heat exchanger.

7. The fuse according to claim 6, characterized in that, The semiconductor heat exchanger has a first heat exchange end (510) and a second heat exchange end (520) disposed opposite to each other; The first heat exchange end (510) is disposed toward the receiving cavity (101) and can exchange heat with the housing (100); the second heat exchange end (520) is disposed away from the receiving cavity (101).

8. The fuse according to claim 1, characterized in that, At least a portion of the heat exchanger (500) is configured as a refrigeration type heat exchanger, the refrigeration type heat exchanger includes a refrigeration end (501), the refrigeration end (501) is disposed toward the receiving cavity (101), the refrigeration end (501) is capable of refrigeration and heat exchange with the shell (100).

9. The fuse according to claim 8, characterized in that, The housing (100) is provided with heat sinks (800); The refrigeration heat exchanger also includes a heating end (502), which is disposed away from the receiving cavity (101); The heat sink (800) is correspondingly provided with the heating end (502) of the refrigeration heat exchanger, and the heat sink (800) can dissipate heat to the heating end (502) of the refrigeration heat exchanger.

10. The fuse according to claim 1, characterized in that, It also includes a temperature measuring element, the detection end of which is disposed in the receiving cavity (101), and the temperature measuring element is used to detect the temperature in the receiving cavity (101).

11. The fuse according to claim 1, characterized in that, The receiving cavity (101) has openings at both ends in the extending direction; The fuse (300) has terminals (200) connected to both ends, and the terminals (200) are connected to the housing (100). The terminals (200) close the opening.

12. An electrical appliance, characterized in that, Includes the device body and the fuse as described in any one of claims 1-11; The device body is provided with a circuit board (900), and the two ends of the fuse (300) are respectively connected to terminals (200), and the terminals (200) are connected to the circuit board (900); The heat exchanger (500) is provided with lead wires, which are connected to the circuit board (900).

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