Circuit protection device and electric equipment

Abstract

The utility model provides a circuit protection device and electric equipment, and relates to the technical field of circuit protection. The circuit protection device comprises a protection switch and an electric connection assembly. The two electric connecting pieces are connected through a protection switch; and the protection switch is configured to be disconnected when the temperature of the protection switch is greater than or equal to a first preset temperature so as to disconnect the electric connection of the two electric connecting pieces, and is connected when the temperature of the protection switch is reduced to be less than or equal to a second preset temperature so as to electrically connect the two electric connecting pieces. The circuit protection device provided by the embodiment of the utility model can directly replace a traditional fuse tube.

Description

Technical Field

[0001] This application relates to the technical field of circuit protection, and in particular, to a circuit protection device and an electrical equipment. Background Art

[0002] The fuse tube is an important component to ensure the safe and reliable operation of the electrical system, and it is widely used in various circuits. However, when the traditional fuse tube protects the circuit against overcurrent, it will fuse and fail, and only a new fuse tube can be replaced.

[0003] In the prior art, a protector that can self - recover after power - off is usually used to replace the traditional fuse tube. When a fault such as overcurrent or over - temperature occurs in the circuit, the protection mechanism of the protector is triggered and the protector disconnects. After the circuit fault is eliminated, the protector will automatically recover and reconnect the circuit.

[0004] However, the above - mentioned protector cannot directly replace the traditional fuse tube. Utility Model Content

[0005] This application provides a circuit protection device and an electrical equipment to solve the problem that the protector in the prior art cannot directly replace the traditional fuse tube.

[0006] On the one hand, a circuit protection device provided by this application includes: a protection switch and an electrical connection component;

[0007] The electrical connection component includes two electrical connection members, the electrical connection members are used to match the connection seat of the circuit to be protected, and the two electrical connection members are connected through the protection switch;

[0008] The protection switch is configured to disconnect when the temperature of the protection switch is greater than or equal to a first preset temperature, so as to disconnect the electrical connection of the two electrical connection members, and to connect when the temperature of the protection switch is less than or equal to a second preset temperature, so as to electrically connect the two electrical connection members.

[0009] In some embodiments, leads are provided on the electrical connection member.

[0010] In some embodiments, the electrical connection member is an electrode.

[0011] In some embodiments, the protection switch includes a housing, a driving member, a first connection member and a second connection member. The driving member, at least part of the first connection member and at least part of the second connection member are located in the housing. The first connection member contacts the second connection member so that the first connection member is electrically connected to the second connection member;

[0012] The driving member is configured to drive one of the first connecting member and the second connecting member to be disengaged from the other when the temperature of the driving member is greater than or equal to a first preset temperature, and to drive one of the first connecting member and the second connecting member to contact the other when the temperature of the driving member drops to less than or equal to a second preset temperature.

[0013] In some embodiments, the driving member is a temperature-sensitive expansion member. When the temperature of the driving member is greater than or equal to the first preset temperature, the driving member deforms to push one of the first connecting member and the second connecting member to be disengaged from the other. When the temperature of the driving member drops to less than or equal to the second preset temperature, the driving member returns to its original shape to drive one of the first connecting member and the second connecting member to contact the other.

[0014] In some embodiments, the driving member includes at least one of a bimetallic strip and a heating element.

[0015] In some embodiments, the bimetallic strip is connected to one of the first connecting member and the second connecting member.

[0016] In some embodiments, the heating element is disposed on a side of the bimetallic strip away from the first connecting member or the second connecting member.

[0017] In some embodiments, the protection switch further includes a third connecting member located inside the housing. The third connecting member connects the driving member to one of the first connecting member and the second connecting member.

[0018] In some embodiments, the third connecting member is an elastic member. When the driving member drives one of the first connecting member and the second connecting member to be disengaged from the other, the elastic member is compressed.

[0019] In some embodiments, the first connecting member has a first contact, and the second connecting member has a second contact. The first contact contacts or disengages from the second contact to electrically connect or disconnect the first connecting member and the second connecting member.

[0020] In some embodiments, it further includes a mounting base, and the housing and at least one of the electrical connecting members are disposed on the mounting base.

[0021] In some embodiments, the mounting base has two first electrical connection portions and two second electrical connection portions, and the first electrical connection portions are electrically connected to the corresponding second electrical connection portions;

[0022] Portions of the first connecting member and portions of the second connecting member extend out of the housing and are electrically connected to the respective first electrical connection portions. The electrical connecting member is electrically connected to the second electrical connection portion correspondingly.

[0023] In some embodiments, the mounting base includes a first mounting portion and two second mounting portions. The first mounting portion is disposed between the two second mounting portions, and the housing is connected to the first mounting portion.

[0024] The electrical connecting member has a plugging groove. The second electrical connection portion is located on the second mounting portion, and the second mounting portion is inserted into the plugging groove so that the electrical connecting member is electrically connected to the second electrical connection portion.

[0025] On the other hand, the present application provides an electrical device, including a circuit and the above-mentioned circuit protection device connected to the circuit.

[0026] A circuit protection device and an electrical device provided by the present application. The circuit protection device includes: a protection switch and an electrical connection component. The electrical connection component includes two electrical connecting members, and the electrical connecting members are used to match with the connection seat of the circuit to be protected. The two electrical connecting members are connected through the protection switch. The protection switch is configured to disconnect when the temperature of the protection switch is greater than or equal to a first preset temperature to disconnect the electrical connection between the two electrical connecting members, and to electrically connect the two electrical connecting members when the temperature of the protection switch is less than or equal to a second preset temperature. Thus, for the circuit protection device provided by the embodiments of the present application, after the protection switch disconnects the electrical connection between the two electrical connecting members to disconnect the circuit to be protected, there is no need to replace the circuit protection device. After the protection switch cools down, the two electrical connecting members can be electrically connected again, and then the circuit to be protected can be connected and used continuously. At the same time, by matching the electrical connecting members with the connection seat of the circuit to be protected, the electrical connecting members can be directly connected to the connection seat. Thus, the circuit protection device provided by the present application can directly replace the traditional fuse tube without re-designing the structure of the connection seat. Description of the Drawings

[0027] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0028] Figure 1 Structural schematic diagram of the circuit protection device provided by the embodiments of the application;

[0029] Figure 2 For Figure 1 exploded schematic diagram;

[0030] Figure 3 For Figure 1 cross-sectional view;

[0031] Figure 4For Figure 1 Structural schematic diagram of the protection switch and the mounting base in

[0032] Figure 5 For Figure 1 Partial cross-sectional view of the protection switch in

[0033] Figure 6 For Figure 1 Structural schematic diagram of the electrical connector in

[0034] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and more detailed descriptions will be given in the following text. These drawings and textual descriptions are not intended to limit the scope of the inventive concept of the present utility model in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0035] Explanation of reference numerals:

[0036] 100 - protection switch; 110 - housing; 120 - driving member; 121 - bimetallic strip; 122 - heating element; 130 - first connector; 131 - first contact; 140 - second connector; 141 - second contact; 150 - third connector;

[0037] 200 - electrical connector; 210 - insertion slot;

[0038] 300 - mounting base; 310 - first mounting portion; 311 - first electrical connection portion; 320 - second mounting portion; 321 - second electrical connection portion. Detailed description of the specific embodiment

[0039] Hereinafter, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0040] In the prior art, when the traditional fuse tube protects the circuit against overcurrent, it will melt and fail, and only a new fuse tube can be replaced. Currently, a protector that can self - recover after power - off is usually used to replace the traditional fuse tube. When a fault such as overcurrent or over - temperature occurs in the circuit, the protection mechanism of the protector is triggered and the protector disconnects. After the fault of the circuit is eliminated, the protector will automatically recover and reconnect the circuit. However, the traditional fuse tube is connected to the circuit through a connection base, and the structure of the above - mentioned protector does not match the structure of the connection base, so it cannot directly replace the traditional fuse tube.

[0041] Based on this, an embodiment of the present application provides a circuit protection device, including: a protection switch and an electrical connection component. The electrical connection component includes two electrical connectors, and the electrical connectors are used to match the connection seat of the protected circuit. The two electrical connectors are connected through the protection switch. The protection switch is configured to disconnect when the temperature of the protection switch is greater than or equal to a first preset temperature to disconnect the electrical connection between the two electrical connectors, and when the temperature of the protection switch is less than or equal to a second preset temperature, electrically connect the two electrical connectors. Thus, for the circuit protection device provided by the embodiment of the present application, after the protection switch disconnects the electrical connection between the two electrical connectors to disconnect the protected circuit, there is no need to replace the circuit protection device. After the protection switch cools down, the two electrical connectors can be electrically connected again, and then the protected circuit can be connected and used continuously. At the same time, by matching the electrical connectors with the connection seat of the protected circuit, the electrical connectors can be directly connected to the connection seat. Therefore, the circuit protection device provided by the present application can directly replace the traditional fuse tube without redesigning the structure of the connection seat.

[0042] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0043] Refer to Figures 1 to 6 , a circuit protection device provided by an embodiment of the present application includes: a protection switch 100 and an electrical connection component. The electrical connection component includes two electrical connectors 200, and the electrical connectors 200 are used to match the connection seat of the protected circuit. The two electrical connectors 200 are connected through the protection switch 100.

[0044] The protection switch 100 is configured to disconnect when the temperature of the protection switch 100 is greater than or equal to a first preset temperature to disconnect the electrical connection between the two electrical connectors 200, and to connect when the temperature of the protection switch 100 drops to less than or equal to a second preset temperature to electrically connect the two electrical connectors 200.

[0045] It can be understood that the electrical connectors 200 are matched with the connection seat in the protected circuit so that the electrical connectors 200 can be directly connected to the connection seat of the protected circuit, and thus the circuit protection device can directly replace the fuse tube in the prior art without redesigning the connection seat of the protected circuit.

[0046] Exemplarily, the connection seat in the protected circuit has a groove, and the shape and size of at least part of the electrical connectors 200 are matched with the groove, and at least part of the electrical connectors 200 are inserted into the groove to connect the electrical connectors 200 with the connection seat. For example, the groove on the connection seat is a cylindrical groove, the electrical connectors 200 are cylindrical, and when the electrical connectors 200 are inserted into the groove, the electrical connectors 200 are in contact with the groove wall.

[0047] Among them, the protection switch 100 can be a temperature control switch, a thermostat, a thermal protector, etc., so that the protection switch 100 disconnects when the temperature is greater than or equal to the first preset temperature and connects when the temperature drops to less than or equal to the second preset temperature. It can be understood that the first preset temperature and the second preset temperature can be the same or different.

[0048] Specifically, the electrical connector 200 connects the protected circuit and the protection switch 100, so that the electrical connector 200 can transfer the temperature of the protected circuit to the protection switch 100, thereby increasing the temperature of the protection switch 100. When the temperature of the protection switch 100 rises to greater than or equal to the first preset temperature, the protection switch 100 disconnects to disconnect the electrical connection of the two electrical connectors 200, thereby disconnecting the protected circuit. When the protection switch 100 cools down to a temperature less than or equal to the second preset temperature, the protection switch 100 reconnects to electrically connect the two electrical connectors 200, thereby connecting the protected circuit.

[0049] It should be noted that when the current in the protected circuit is too large or the temperature of the protection switch 100 rises to greater than or equal to the first preset temperature due to other external factors, the protection switch 100 will disconnect.

[0050] For the circuit protection device provided by the embodiment of the present application, after the protection switch 100 disconnects the electrical connection of the two electrical connectors 200 to disconnect the protected circuit, there is no need to replace the circuit protection device. After the protection switch 100 cools down, the two electrical connectors 200 can be electrically connected again, thereby connecting the protected circuit and continuing to use. At the same time, the electrical connector 200 can be matched with the connection seat in the protected circuit, so that the electrical connector 200 can be directly connected to the connection seat. Thus, the circuit protection device provided by the embodiment of the present application can directly replace the fuse tube in the prior art without redesigning the structure of the connection seat. In some embodiments, some fuse tubes in the prior art have leads. To enable the circuit protection device provided by the embodiment of the present application to directly replace the above fuse tubes, leads are provided on the electrical connector 200. The leads are electrically connected to the protected circuit.

[0051] In some embodiments, the protection switch 100 includes a housing 110, a driving member 120, a first connecting member 130, and a second connecting member 140. The driving member 120, at least a part of the first connecting member 130, and at least a part of the second connecting member 140 are located inside the housing 110. The first connecting member 130 contacts the second connecting member 140 to electrically connect the first connecting member 130 and the second connecting member 140. The driving member 120 is configured to drive one of the first connecting member 130 and the second connecting member 140 to disengage from the other when the temperature of the driving member 120 is greater than or equal to a first preset temperature, and to drive one of the first connecting member 130 and the second connecting member 140 to contact the other when the temperature of the driving member 120 decreases to less than or equal to a second preset temperature.

[0052] Wherein, when the first connecting member 130 contacts the second connecting member 140, the first connecting member 130 is electrically connected to the second connecting member 140, thereby connecting the protected circuit. When the first connecting member 130 disengages from the second connecting member 140, the first connecting member 130 is disconnected from the second connecting member 140, thereby disconnecting the protected circuit.

[0053] Specifically, when the temperature of the driving member 120 rises due to heat to be greater than or equal to the first preset temperature, the driving member 120 will drive one of the first connecting member 130 and the second connecting member 140 to deform or move, thereby causing the first connecting member 130 to disengage from the second connecting member 140, and thus disconnecting the protected circuit. At this time, the fault of the protected circuit can be processed. After the driving member 120 cools for a period of time and the temperature decreases to less than or equal to the second preset temperature, the driving member 120 drives the first connecting member 130 to contact the second connecting member 140 to reconnect the protected circuit.

[0054] Exemplarily, the first connecting member 130 and the second connecting member 140 can be conductive elastic sheets.

[0055] It should be noted that when the current of the protected circuit is too large, the temperatures of the electrical connection assembly, the first connecting member 130, and the second connecting member 140 will all increase, thereby causing the temperature of the housing 110 to increase, and the temperature of the driving member 120 due to heat will increase. When the temperature of the housing 110 increases due to other factors, it will also cause the temperature of the driving member 120 due to heat to increase.

[0056] The circuit protection device provided by the embodiment of the present application, by setting the driving member 120, when the temperature of the driving member 120 is greater than or equal to the first preset temperature, the driving member 120 drives one of the first connecting member 130 and the second connecting member 140 to be disengaged from the other, so as to disconnect the protected circuit, and further protect the protected circuit. After the driving member 120 cools for a period of time and the temperature drops to less than or equal to the second preset temperature, the driving member 120 drives the first connecting member 130 and the second connecting member 140 to contact each other, so as to connect the protected circuit.

[0057] In a specific implementation, the driving member 120 is a temperature-sensitive expansion member. When the temperature of the driving member 120 is greater than or equal to the first preset temperature, the driving member 120 deforms to push one of the first connecting member 130 and the second connecting member 140 to be disengaged from the other. When the temperature of the driving member 120 drops to less than or equal to the second preset temperature, the driving member 120 restores its deformation to drive one of the first connecting member 130 and the second connecting member 140 to contact the other.

[0058] Specifically, in the initial state, the first connecting member 130 is electrically connected to the second connecting member 140 to connect the protected circuit. When the driving member 120 is heated and its temperature rises to greater than or equal to the first preset temperature, the driving member 120 expands and pushes one of the first connecting member 130 and the second connecting member 140 to undergo partial deformation, so that the first connecting member 130 and the second connecting member 140 are disengaged from each other, and further disconnect the protected circuit.

[0059] After the driving member 120 cools for a period of time and the temperature drops to less than or equal to the second preset temperature, the driving member 120 begins to contract and return to the initial state, and further makes the first connecting member 130 and the second connecting member 140 return to the initial state, that is, the first connecting member 130 contacts the second connecting member 140, thereby connecting the protected circuit.

[0060] It should be noted that the first preset temperature is greater than or equal to the second preset temperature.

[0061] Refer to Figure 5 In some embodiments, the driving member 120 includes at least one of a bimetal sheet 121 and a heating element 122.

[0062] Specifically, when the temperature of at least one of the bimetal sheet 121 and the heating element 122 rises, it can drive the first connecting member 130 to be disengaged from the second connecting member 140.

[0063] Refer to Figure 5 In some embodiments, the bimetal sheet 121 is connected to one of the first connecting member 130 and the second connecting member 140.

[0064] Among them, the bimetallic strip 121 is a composite part composed of two or more metals or other materials. Due to the different coefficients of thermal expansion of different materials in the bimetallic strip 121, when the temperature rises, the bimetallic strip 121 will expand and deform and generate internal stress.

[0065] Specifically, the bimetallic strip 121 is connected to the first connecting member 130. When the bimetallic strip 121 expands due to heat, it will push the first connecting member 130, causing the first connecting member 130 to deform, and then causing the first connecting member 130 to be disengaged from the second connecting member 140. After the bimetallic strip 121 cools down, it will contract, and then drive the first connecting member 130 to recover its deformation, so that the first connecting member 130 is in contact with the second connecting member 140.

[0066] Furthermore, the bimetallic strip 121 is connected to the housing 110 to fix the bimetallic strip 121.

[0067] Refer to Figure 5 , in some embodiments, the heating element 122 is disposed on a side of the bimetallic strip 121 facing away from the first connecting member 130 or the second connecting member 140.

[0068] Specifically, when the temperature of the heating element 122 rises due to heat, it will expand, and then can drive the bimetallic strip 121 to move toward the first connecting member 130 or the second connecting member 140, and drive the first connecting member 130 to be disengaged from the second connecting member 140 through the bimetallic strip 121.

[0069] Exemplarily, the heating element 122 is a ceramic PTC heating element.

[0070] In some embodiments, the heating element 122 can be directly connected to the first connecting member 130 or the second connecting member 140.

[0071] Refer to Figure 5 , in specific implementation, the protection switch 100 further includes a third connecting member 150. The third connecting member 150 is located inside the housing 110, and the third connecting member 150 connects the driving member 120 to one of the first connecting member 130 and the second connecting member 140.

[0072] Among them, by providing the third connecting member 150, when the driving member 120 deforms or recovers its deformation, it is convenient for the driving member 120 to drive the first connecting member 130 and the second connecting member 140 to be disengaged from or in contact with each other.

[0073] Specifically, when the temperature of the driving member 120 rises to be greater than or equal to the first preset temperature, the driving member 120 expands and generates internal stress. The internal stress of the driving member 120 can apply a force to the third connecting member 150, so as to drive a part of the first connecting member 130 to deform through the third connecting member 150, thereby causing the first connecting member 130 to be separated from the second connecting member 140. When the internal stress of the driving member 120 disappears and it shrinks back to the initial state, the first connecting member 130 can be driven by the third connecting member 150 to return to the initial state, that is, the first connecting member 130 is in contact with the second connecting member 140.

[0074] In some embodiments, the third connecting member 150 is an elastic member. When the driving member 120 drives one of the first connecting member 130 and the second connecting member 140 to be separated from the other, the elastic member is compressed.

[0075] Exemplarily, the elastic member is a spring.

[0076] In specific implementation, when the first connecting member 130 is in contact with the second connecting member 140, the elastic member is in a natural state. When the first connecting member 130 is driven by the internal stress of the driving member 120 to be separated from the second connecting member 140, the driving member 120 compresses the elastic member. Furthermore, when the internal stress of the driving member 120 disappears, the first connecting member 130 can be driven by the elastic force of the elastic member to be in contact with the second connecting member 140. Thus, the first connecting member 130 and the second connecting member 140 can be quickly brought into contact, and then the protected circuit can be quickly connected.

[0077] Refer to Figure 5 , in specific implementation, the first connecting member 130 has a first contact 131, and the second connecting member 140 has a second contact 141. The first contact 131 is in contact with or separated from the second contact 141, so that the first connecting member 130 is electrically connected to or disconnected from the second connecting member 140.

[0078] Among them, by providing the first contact 131 and the second contact 141, it is convenient for the first connecting member 130 to be in contact with the second connecting member 140, and further convenient for the first connecting member 130 to be electrically connected to the second connecting member 140.

[0079] In specific implementation, the electrical connecting member 200 is an electrode.

[0080] Among them, the electrode has high precision and high sensitivity, and can quickly and accurately conduct the temperature information of the protected circuit to the driving member 120. In addition, the size of the electrode is small and the weight is light, which is beneficial to reducing the volume of the circuit protection device and realizing the lightweight of the circuit protection device.

[0081] Exemplarily, the electrode can be made of copper-tin plating material, which has good electrical conductivity and thermal conductivity. Alternatively, the electrode can be made of copper-silver plating material or silver material. The copper-silver plating material and silver material have good thermal conductivity, which can reduce the heat loss when the electrode conducts temperature information, and thus ensure the accuracy of the temperature information conducted by the electrode.

[0082] Referring to Figure 1 、 Figure 2 and Figure 5 , in some embodiments, the circuit protection device provided by the embodiments of the present application further includes a mounting base 300, and the housing 110 and at least one electrical connector 200 are disposed on the mounting base 300.

[0083] Specifically, both the housing 110 and the electrical connector 200 are connected to the mounting base 300, so that the housing 110 and the electrical connector 200 are not easily moved relative to the mounting base 300, and the housing 110 and the electrical connector 200 are not easily moved relative to each other.

[0084] The first connector 130 and the second connector 140 are electrically connected to the electrical connector 200, and both the first connector 130 and the second connector 140 are partially inserted into the housing 110. Thus, when the electrical connector 200 is connected to the protected circuit, the first connector 130 and the second connector 140 are not easily moved relative to the housing 110 and the electrical connector 200.

[0085] Thereby, the stability of the housing 110, the first connector 130 and the second connector 140 is improved, and thus the stability of the circuit protection device is improved. At the same time, the connection strength between the first connector 130 and the second connector 140 and the housing 110 and the electrical connection assembly is ensured, and thus the strength of the circuit protection device is ensured.

[0086] Referring to Figure 1 、 Figure 2 and Figure 4 , in some embodiments, the mounting base 300 has two first electrical connection portions 311 and two second electrical connection portions 321, and the first electrical connection portion 311 is electrically connected to the second electrical connection portion 321 correspondingly.

[0087] Part of the first connector 130 and part of the second connector 140 extend out of the housing and are respectively electrically connected to the first electrical connection portions 311. The electrical connector 200 is electrically connected to the second electrical connection portions 321 correspondingly.

[0088] Specifically, one electrical connector 200, one second electrical connector 321, one first electrical connector 311, the first connector 130, the second connector 140, another first electrical connector 311, another second electrical connector 321, and another electrical connector 200 are electrically connected in sequence. Providing the first electrical connector 311 and the second electrical connector 321 on the mounting base 300 facilitates electrical connection between the first connector 130, the second connector 140, and the electrical connector 200.

[0089] Exemplarily, the mounting base 300 is a printed circuit board, the first electrical connection portion 311 is a first solder pad, and the second electrical connection portion 321 is a second solder pad. Both the first and second solder pads are disposed on the printed circuit board so as to be electrically connected via the printed circuit board. The first and second connectors 130 and 140 are respectively welded to the second solder pads, and the electrical connector 200 is welded to the second solder pads. This allows the first and second connectors 130 and 140 to be electrically connected to the electrical connector 200.

[0090] Furthermore, the electrical connector 200 is connected to the first pad by soldering. The first connector 130 and the second connector 140 are both connected to the second pad by soldering.

[0091] Reference Figure 2 、 Figure 3 and Figure 6 In a specific implementation, the mounting base 300 includes a first mounting portion 310 and two second mounting portions 320 , the first mounting portion 310 is disposed between the two second mounting portions 320 , and the housing 110 is connected to the first mounting portion 310 .

[0092] The electrical connector 200 has a plugging slot 210 . The second electrical connecting portion 321 is located on the second mounting portion 320 . The second mounting portion 320 is inserted into the plugging slot 210 to electrically connect the electrical connector 200 to the second electrical connecting portion 321 .

[0093] The second mounting portion 320 is inserted into the plug slot 210 , so that the connection between the electrical connector 200 and the mounting base 300 is more stable and reliable, thereby ensuring the strength and stability of the circuit protection device.

[0094] Specifically, one second mounting portion 320, the first mounting portion 310, and the other second mounting portion 320 are arranged sequentially along a predetermined direction. The electrical connector 200 is sleeved onto the second mounting portion 320 via the side of the second mounting portion 320 facing away from the first mounting portion 310, thereby connecting the electrical connector 200 to the second mounting portion 320. The two electrical connectors 200 are coaxially arranged. In the prior art, the two connector sockets of the protected circuit are coaxially arranged. This arrangement facilitates the connection of the two electrical connectors 200 to the two connector sockets of the protected circuit, respectively.

[0095] Exemplarily, the second mounting portion 320 is a cube, and a part of the insertion slot 210 is matched with the second mounting portion 320. The side wall of the insertion slot 210 includes four arc portions and four side portions. The arc portions correspond to the edges of the second mounting portion 320 one by one, and the side portions correspond to the sides of the second mounting portion 320 one by one. Thus, it is convenient for the second mounting portion 320 to be inserted into the insertion slot 210, and at the same time, it can prevent the sharp edges and corners on the second mounting portion 320 from rubbing against the inner wall of the insertion slot 210 and causing wear to the electrical connector 200. In addition, the arc portions can effectively reduce stress concentration and improve the durability and fatigue resistance of the temperature acquisition component. Further, the arc portions can be 270-degree arcs.

[0096] In some examples, the first mounting portion 310 is connected to the middle region of the housing 110. The first connector 130 and the second connector 140 extend out through both sides of the housing 110. The first electrical connection portions 311 are respectively located on both sides of the housing 110, so that it is convenient for the first connector 130 and the second connector 140 to be connected to the first electrical connection portions 311. It can be understood that the first electrical connection portions 311 can be located on the first mounting portion 310, or on the second mounting portion 320, or partially on the first mounting portion 310 and partially on the second mounting portion 320.

[0097] Based on the above embodiments, an electrical device provided by an embodiment of the present application includes a circuit and a circuit protection device connected to the circuit.

[0098] Among them, the specific structure of the circuit protection device has been described in detail in the above embodiments, and will not be elaborated here.

[0099] The electrical device provided by the embodiment of the present application protects the circuit through the circuit protection device. The circuit protection device is provided with a driving member 120. When the temperature of the driving member 120 is greater than or equal to a first preset temperature, the driving member 120 drives one of the first connector 130 and the second connector 140 to be disengaged from the other to disconnect the circuit, thereby protecting the circuit. After the driving member 120 cools for a period of time and the temperature drops to less than or equal to a second preset temperature, the driving member 120 drives the first connector 130 and the second connector 140 to contact each other to connect the circuit. The circuit protection device provided by the embodiment of the present application does not need to be replaced after triggering the protection mechanism to disconnect the circuit, and can be connected to the circuit and continue to be used after cooling. At the same time, the electrical connector 200 can be matched with the connection seat in the protected circuit, so that the electrical connector 200 can be directly connected to the connection seat. Thus, the circuit protection device provided by the embodiment of the present application can directly replace the fuse tube in the prior art without re-designing the structure of the connection seat.

[0100] In the description and claims of the embodiments of the present application and the above-mentioned drawings, terms such as "first", "second", etc. are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so as to implement the embodiments of the present application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0101] In the embodiments of the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present application can be understood according to specific circumstances.

[0102] In addition, the terms "arranged", "connected", "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0103] Unless otherwise specified, the term "plurality" means two or more.

[0104] After considering the specification and practicing the application disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only regarded as exemplary, and the scope of the present application is only limited by the appended claims.

Claims

1. A circuit protection device, characterized in that, Comprising: A protection switch (100) and an electrical connection component; The electrical connection component includes two electrical connection members (200), the electrical connection members (200) are used to match with the connection base of the circuit to be protected, and the two electrical connection members (200) are connected through the protection switch (100); The protection switch (100) is configured to disconnect when the temperature of the protection switch (100) is greater than or equal to a first preset temperature, so as to disconnect the electrical connection of the two electrical connection members (200), and to connect when the temperature of the protection switch (100) drops to less than or equal to a second preset temperature, so as to electrically connect the two electrical connection members (200).

2. The circuit protection device according to claim 1, wherein The electrical connection member (200) is cylindrical.

3. The circuit protection device according to claim 1, characterized in that Leads are provided on the electrical connection member (200).

4. The circuit protection device according to claim 1, characterized in that, The electrical connection member (200) is an electrode.

5. The circuit protection device according to claim 4, characterized in that, The electrical connection member (200) is a copper tin-plated part or a copper silver-plated part.

6. The circuit protection device according to any one of claims 1-5, characterized in that, The protection switch (100) includes a housing (110), a driving member (120), a first connection member (130) and a second connection member (140), the driving member (120), at least part of the first connection member (130) and at least part of the second connection member (140) are located inside the housing (110), and the first connection member (130) contacts the second connection member (140) so that the first connection member (130) is electrically connected to the second connection member (140); The driving member (120) is configured to drive one of the first connection member (130) and the second connection member (140) to disengage from the other when the temperature of the driving member (120) is greater than or equal to the first preset temperature, and to drive one of the first connection member (130) and the second connection member (140) to contact the other when the temperature of the driving member (120) drops to less than or equal to the second preset temperature.

7. The circuit protection device according to claim 6, wherein, The driving member (120) is a temperature-sensitive expansion member. When the temperature of the driving member (120) is greater than or equal to the first preset temperature, the driving member (120) deforms to push one of the first connection member (130) and the second connection member (140) to disengage from the other. When the temperature of the driving member (120) drops to less than or equal to the second preset temperature, the driving member (120) resumes deformation to drive one of the first connection member (130) and the second connection member (140) to contact the other.

8. The circuit protection device according to claim 6, wherein The driving member (120) includes a bimetallic strip (121); Alternatively, the driving member (120) includes a bimetallic strip (121) and a heating member (122).

9. The circuit protection device according to claim 8, characterized in that, The bimetallic strip (121) is connected to one of the first connection member (130) and the second connection member (140).

10. The circuit protection device according to claim 9, characterized in that, The heating member (122) is disposed on a side of the bimetallic strip (121) facing away from the first connection member (130) or the second connection member (140).

11. The circuit protection device according to claim 6, wherein The protection switch (100) further includes a third connecting member (150). The third connecting member (150) is located within the housing (110), and the third connecting member (150) connects the driving member (120) to one of the first connecting member (130) and the second connecting member (140).

12. The circuit protection device according to claim 11, wherein, The third connecting member (150) is an elastic member. When the driving member (120) drives one of the first connecting member (130) and the second connecting member (140) to be disengaged from the other, the elastic member is compressed.

13. The circuit protection device according to claim 6, wherein The first connecting member (130) has a first contact (131), and the second connecting member (140) has a second contact (141). The first contact (131) contacts or is disengaged from the second contact (141) to electrically connect or disconnect the first connecting member (130) and the second connecting member (140).

14. The circuit protection device according to claim 1, wherein It further includes a mounting base (300). The protection switch (100) and at least one of the electrical connecting members (200) are disposed on the mounting base (300).

15. The circuit protection device according to claim 6, characterized in that, It further includes a mounting base (300). The mounting base (300) has two first electrical connection portions (311) and two second electrical connection portions (321). The first electrical connection portions (311) are electrically connected to the second electrical connection portions (321) correspondingly. Part of the first connecting member (130) and part of the second connecting member (140) extend out of the housing (110) and are electrically connected to the respective first electrical connection portions (311). The electrical connecting member (200) is electrically connected to the second electrical connection portions (321) correspondingly.

16. The circuit protection device according to claim 15, characterized in that, The mounting base (300) includes a first mounting portion (310) and two second mounting portions (320). The first mounting portion (310) is disposed between the two second mounting portions (320), and the housing (110) is connected to the first mounting portion (310). The electrical connecting member (200) has a plugging groove (210). The second electrical connection portion (321) is located on the second mounting portion (320). The second mounting portion (320) is plugged into the plugging groove (210) to electrically connect the electrical connecting member (200) and the second electrical connection portion (321).

17. An electrical device, characterized in that, It includes a circuit and the circuit protection device according to any one of claims 1-16 connected to the circuit.

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