Capacitor device, power supply circuit, and electronic apparatus

Abstract

The invention discloses a capacitor device, a power supply circuit and electronic equipment, and belongs to the technical field of electronic equipment. The capacitor device comprises: a capacitor core; the electrode lead is electrically connected with the capacitor core; and the safety module is connected in series to an electric loop between the electrode lead and the capacitor core, and the safety module is configured to disconnect the electric loop between the electrode lead and the capacitor core under the condition that the working condition state of the capacitor device meets the preset working condition state.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a capacitor device, a power supply circuit and an electronic device. Background Art

[0002] In related technologies, electrical equipment needs to be powered by the power supply circuit of the power module. In the power supply circuit, the AC power input from the power grid is rectified into pulsating DC power through the rectifier circuit, and a capacitor is connected after the rectifier circuit. Through the charging and discharging characteristics of the capacitor, the rectified pulsating DC power is converted into a stable DC output.

[0003] During operation, capacitors must withstand sudden voltage fluctuations caused by grid-side fluctuations, which can lead to capacitor failure. When a capacitor fails, internal pressure can increase, causing deformation of the capacitor housing and electrolyte leakage. This leaked electrolyte can corrode and damage other electrical components, causing the fault to expand and impact power supply safety. Summary of the Invention

[0004] The present application aims to provide a capacitor device, a power supply circuit and an electronic device, which can solve the problem in the related art that capacitor failure damages other electrical components in the circuit and affects the power supply safety.

[0005] In a first aspect, an embodiment of the present application provides a capacitive device, comprising:

[0006] Capacitor core;

[0007] an electrode lead, the electrode lead being electrically connected to the capacitor core;

[0008] The fuse module is connected in series to the electrical circuit between the electrode lead and the capacitor core. The fuse module is configured to disconnect the electrical circuit between the electrode lead and the capacitor core when the operating state of the capacitor device meets the preset operating state.

[0009] In a second aspect, an embodiment of the present application provides a power supply circuit, including:

[0010] Rectifier module, the input end of the rectifier module is used to connect to the power grid;

[0011] As for the capacitor device proposed in the first aspect, the capacitor device is electrically connected to the output end of the rectifier module.

[0012] In a third aspect, an embodiment of the present application provides an electronic device, including:

[0013] The capacitive device as proposed in the first aspect; and / or

[0014] The power supply circuit as proposed in the second aspect.

[0015] In an embodiment of the present application, a fuse module is provided on the electrical circuit between the electrode lead of the capacitor device and the capacitor core. The fuse module can disconnect the electrical circuit between the electrode lead and the capacitor core when the operating state of the capacitor device exceeds the safety threshold. At this time, the capacitor device will be in an open circuit state, which can avoid damage and failure of the capacitor device due to power grid fluctuations, and prevent the capacitor device from affecting other electrical components in the power supply circuit after failure, thereby improving power supply safety.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 Schematic diagrams of the structures of capacitor devices according to some embodiments of the present application are shown.

[0019] Figure 2 Schematic diagrams of the structures of capacitor devices according to some embodiments of the present application are shown.

[0020] Figure 3 A circuit diagram of a power supply circuit according to some embodiments of the present application is shown.

[0021] Reference numerals:

[0022] 100 capacitor element, 102 capacitor core, 104 electrode lead, 106 fuse module, 108 housing, 1082 opening, 110 sealing element, 112 connector;

[0023] 200 power supply circuit, 202 rectifier module. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] The following combination Figures 1 to 3 A capacitor device, a power supply circuit, and an electronic device according to embodiments of the present application are described.

[0029] In some embodiments of the present application, a capacitor device is provided. Figure 1 Schematic diagrams of the structure of the capacitor device 100 of some embodiments of the present application are shown. Figure 1 As shown, the capacitor device 100 includes: a capacitor core 102; an electrode lead 104, which is electrically connected to the capacitor core 102; and a fuse module 106, which is connected in series to the electrical circuit between the electrode lead 104 and the capacitor core 102. The fuse module 106 is configured to disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102 when the operating state of the capacitor device 100 meets a preset operating state.

[0030] In this technical solution, if Figure 1As shown, the capacitor device 100 includes a capacitor core 102 and electrode leads 104, wherein the electrode leads 104 include a positive lead and a negative lead. For example, taking the capacitor device 100 as an electrolytic capacitor, the capacitor core 102 includes a positive foil, a negative foil and an electrolyte.

[0031] Among them, depending on the capacity and material of the capacitor device 100, the capacitor device 100 can withstand different operating conditions. In order to ensure the safety and reliability of the capacitor device 100, it is necessary to ensure that the capacitor device 100 operates below the safety threshold, such as the operating voltage of the capacitor device 100 is less than the safety voltage, the operating current of the capacitor device 100 is less than the safety current, and the operating temperature of the capacitor device 100 is less than the safety temperature.

[0032] When the operating state of the capacitor device 100 exceeds the safety threshold, it will cause severe heating of the capacitor device 100, which may cause the electrolyte to dry out, abnormal valve opening, and other problems, causing damage and failure of the capacitor device 100. When the capacitor device 100 is damaged and fails, it may cause electrolyte leakage. Because the electrolyte is acidic, corrosive, and conductive, when the electrolyte leaks onto the circuit board, it will indirectly corrode and damage the circuit board and other electrical components on the circuit board, causing the fault to expand and affecting power supply safety.

[0033] In response to the above problems, an embodiment of the present application sets a fuse module 106 between the electrode lead 104 and the capacitor core 102. For example, the fuse module 106 can be set between the positive lead and the capacitor core 102, or between the negative lead and the capacitor core 102. The fuse module 106 can also be set on the electrical circuit of the positive lead and the negative lead at the same time.

[0034] When the capacitor device 100 is in a normal and safe operating state, the fuse module 106 is in a closed state and connects the electrical circuit between the electrode lead 104 and the capacitor core 102. When the operating state of the capacitor device 100 meets the preset operating state, such as the voltage, current or temperature exceeds the safety threshold, the fuse module 106 will switch to an open circuit state. At this time, the electrical circuit between the electrode lead 104 and the capacitor core 102 is cut off, causing the capacitor device 100 to open and stop charging and discharging, thereby preventing the capacitor device 100 from continuing to operate in an unsafe operating state, causing the state of the capacitor device 100 to deteriorate, and preventing further serious problems such as electrolyte leakage.

[0035] In the embodiment of the present application, a fuse module 106 is provided on the electrical circuit between the electrode lead 104 and the capacitor core 102 of the capacitor device 100. The fuse module 106 can disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102 when the operating state of the capacitor device 100 exceeds the safety threshold. At this time, the capacitor device 100 will be in an open circuit state, which can avoid damage and failure of the capacitor device 100 due to power grid fluctuations, and prevent the capacitor device 100 from affecting other electrical components in the power supply circuit 200 after failure, thereby improving power supply safety.

[0036] In some embodiments of the present application, Figure 1 As shown, the capacitor device 100 further includes: a housing 108 , in which the capacitor core 102 is located, and one end of the housing 108 includes an opening 1082 , through which at least part of the electrode lead 104 passes; and a sealing member 110 , which is connected to the housing 108 and blocks the opening 1082 .

[0037] In the embodiment of the present application, the capacitor device 100 includes a housing 108 and a seal 110. An opening 1082 is provided at one end of the housing 108, and the other end of the housing 108 is a closed structure. A cavity is formed within the housing 108, and the capacitor core 102 is entirely disposed within the cavity within the housing 108. A seal 110 is provided at the opening 1082 to seal the capacitor core 102 within the cavity within the housing 108, thereby preventing leakage of the electrolyte within the capacitor core 102.

[0038] Exemplarily, the material of the housing 108 is metal. Exemplarily, the housing 108 is an aluminum shell.

[0039] One end of the electrode lead 104 passes through the opening 1082 and the seal 110, and is connected to the electrode core. For example, one end of the positive electrode lead passes through the opening 1082 and the seal 110, and is electrically connected to the positive electrode foil in the electrode core. The other end of the positive electrode lead is located outside the housing 108, and is used to connect to the positive electrode loop of an external circuit. One end of the negative electrode lead passes through the opening 1082 and the seal 110, and is electrically connected to the negative electrode foil in the electrode core. The other end of the negative electrode lead is located outside the housing 108, and is used to connect to the negative electrode loop of an external circuit.

[0040] Due to the presence of the seal 110, the cavity inside the capacitor housing 108 forms a closed space. When the operating state of the capacitor device 100 exceeds the safety threshold, the capacitor device 100 will cause severe heat generation. At this time, the internal pressure of the capacitor increases, which may cause the housing 108 to deform and the seal 110 to fail, thereby causing the electrolyte to leak out.

[0041] In this regard, the embodiment of the present application provides a fuse module 106 on the electrical circuit between the electrode lead 104 and the capacitor core 102. When the operating environment of the capacitor device 100 meets the preset operating conditions and the capacitor device 100 may heat up abnormally, the fuse module 106 can promptly disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102, so that the capacitor device 100 is open-circuited, preventing the pressure inside the capacitor device 100 from further increasing, and avoiding problems such as failure of the capacitor device 100 and leakage of electrolyte.

[0042] In some embodiments of the present application, Figure 1 As shown, the fuse module 106 is arranged in the seal 110, the operating state of the capacitor device 100 includes the operating current, the preset operating state includes the current threshold, and the fuse module 106 is configured to detect the operating current and disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102 when the operating current exceeds the current threshold.

[0043] In the embodiment of the present application, the insurance module 106 is specifically a current insurance module, which can detect the working state of the capacitor device 100 during operation, specifically detect the working current, and determine whether the working current of the capacitor device 100 exceeds the safe current threshold. When it is detected that the working current of the capacitor device 100 exceeds the safe current threshold corresponding to the preset working state, the insurance module 106 will immediately disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102, thereby avoiding the problem of abnormal heating of the capacitor device 100 due to excessive current, causing the capacitor device 100 to fail. The insurance module 106 is set in the seal 110, and it is possible to add the insurance module 106 to prevent the capacitor device 100 from failing without making major changes to the original capacitor structure.

[0044] Exemplarily, the current fuse module includes a current detection unit and a switching unit. The current detection unit can detect the operating current of the capacitor device 100 in real time. When it is detected that the operating current exceeds the safe current threshold, the current detection unit sends a switching signal to the switching unit to control the switching unit to disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102.

[0045] The embodiment of the present application detects the operating current of the capacitor device 100 and can open the capacitor device 100 when the operating current of the capacitor device 100 exceeds a safe current threshold, so that the capacitor device 100 always operates only in a safe current range, avoiding capacitance anomalies caused by excessive current and improving power supply safety.

[0046] In some embodiments of the present application, Figure 1As shown, the fuse module 106 is arranged in the seal 110, the operating state of the capacitor device 100 includes the operating voltage, the preset operating state includes the voltage threshold, and the fuse module 106 is configured to detect the operating voltage and disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102 when the operating voltage exceeds the voltage threshold.

[0047] In the embodiment of the present application, the insurance module 106 is specifically a voltage insurance module. The voltage insurance module can detect the working state of the capacitor device 100 during operation, specifically detect the working voltage, and determine whether the working voltage of the capacitor device 100 exceeds the safe voltage threshold. When it is detected that the working voltage of the capacitor device 100 exceeds the safe voltage threshold corresponding to the preset working state, the insurance module 106 will immediately disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102, thereby avoiding the problem of abnormal heating of the capacitor device 100 due to excessive voltage, causing the capacitor device 100 to fail. The insurance module 106 is set in the seal 110, and it is possible to add the insurance module 106 to prevent the capacitor device 100 from failing without making major changes to the original capacitor structure.

[0048] Exemplarily, the voltage insurance module includes a voltage detection unit and a switching unit. The voltage detection unit can detect the operating voltage of the capacitor device 100 in real time. When it is detected that the operating voltage exceeds the safe voltage threshold, the voltage detection unit sends a switching signal to the switching unit to control the switching unit to disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102.

[0049] The embodiment of the present application detects the operating voltage of the capacitor device 100 and can open the capacitor device 100 when the operating voltage of the capacitor device 100 exceeds a safe voltage threshold, thereby ensuring that the capacitor device 100 always operates within a safe voltage range, avoiding capacitance anomalies caused by excessive voltage, and improving power supply safety.

[0050] In some embodiments of the present application, Figure 1 As shown, the fuse module 106 is arranged in the seal 110, the operating state of the capacitor device 100 includes the operating temperature, the preset operating state includes a temperature threshold, and the fuse module 106 is configured to detect the operating temperature and disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102 when the operating temperature exceeds the temperature threshold.

[0051] In the embodiment of the present application, the insurance module 106 is specifically a temperature insurance module, which can detect the working state of the capacitor device 100 during operation, specifically the working temperature, and determine whether the working temperature of the capacitor device 100 exceeds the safe temperature threshold. When it is detected that the working temperature of the capacitor device 100 exceeds the safe temperature threshold corresponding to the preset working state, the insurance module 106 will immediately disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102, thereby avoiding the increase in internal pressure of the capacitor device 100 due to excessive temperature, causing the shell 108 of the capacitor device 100 to deform and leak. The insurance module 106 is set in the seal 110, and it is possible to add the insurance module 106 to prevent the capacitor device 100 from failing without making major changes to the original capacitor structure.

[0052] Exemplarily, the temperature fuse module 106 includes a temperature detection unit and a switch unit. The temperature detection unit can detect the operating temperature of the capacitor device 100 in real time. When it is detected that the operating temperature exceeds the safe temperature threshold, the temperature detection unit sends a switch signal to the switch unit to control the switch unit to disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102.

[0053] Exemplarily, the thermal fuse module 106 includes a thermistor and a switch unit. When the operating temperature is below a safety threshold, the thermistor sends a first-level signal to the switch unit, causing the switch unit to remain closed. When the operating temperature exceeds the safety threshold, the thermistor's resistance changes, and the first-level signal changes to a second-level signal, causing the switch unit to open, thereby breaking the electrical circuit between the electrode lead 104 and the capacitor core 102.

[0054] The embodiment of the present application detects the operating temperature of the capacitor device 100 and can open the capacitor device 100 when the operating temperature of the capacitor device 100 exceeds a safe temperature threshold, thereby ensuring that the capacitor device 100 always operates within a safe temperature range, avoiding capacitance anomalies caused by excessive temperature, and improving power supply safety.

[0055] In some embodiments of the present application, the fuse module 106 is a current fuse, a voltage fuse, or a temperature fuse.

[0056] In the embodiment of the present application, the fuse module 106 is illustratively a current fuse, which is disposed within the seal 110. The electrode lead 104 is electrically connected to the capacitor core 102 via the current fuse. When the power grid or load fluctuates and the operating current of the capacitor device 100 increases, if the current value of the operating current exceeds the melting current value of the current fuse, the current fuse melts, disconnecting the capacitor core 102 from the electrode lead 104, thereby opening the circuit of the capacitor device 100, preventing further deterioration and failure of the capacitor device 100 that could lead to electrolyte leakage, and ensuring the circuit safety of the power supply circuit 200.

[0057] Exemplarily, the fuse module 106 is a voltage fuse disposed within the seal 110, and the electrode lead 104 is electrically connected to the capacitor core 102 via the voltage fuse. When the power grid or load fluctuates and the operating voltage of the capacitor element 100 increases, if the operating voltage exceeds the fuse's cutoff voltage, the fuse blows, disconnecting the capacitor core 102 from the electrode lead 104, thereby opening the circuit of the capacitor element 100 and preventing further deterioration and failure of the capacitor element 100, which could lead to electrolyte leakage, thereby ensuring the circuit safety of the power supply circuit 200.

[0058] Illustratively, the fuse module 106 is a thermal fuse disposed within the seal 110, through which the electrode lead 104 is electrically connected to the capacitor core 102. When the power grid or load fluctuates and the operating temperature of the capacitor element 100 rises above the fuse's melting point, the fuse blows, disconnecting the capacitor core 102 from the electrode lead 104. This opens the circuit of the capacitor element 100, preventing further deterioration and failure of the capacitor element 100, which could lead to electrolyte leakage, and thus ensuring the safety of the power supply circuit 200.

[0059] In some embodiments of the present application, Figure 2 Schematic diagrams of the structure of the capacitor device 100 of some embodiments of the present application are shown. Figure 2 As shown, the fuse module 106 is arranged in the shell 108, and the fuse module 106 is located on the side of the capacitor core 102 away from the opening 1082; the operating state of the capacitor device 100 includes an internal pressure value, and the preset operating state includes a pressure threshold. The fuse module 106 is configured to disconnect the electrical circuit between the electrode lead 104 and the capacitor core 102 when the internal pressure value exceeds the pressure threshold.

[0060] In an embodiment of the present application, the fuse module 106 is a pressure fuse module. The fuse module 106 can trigger a fuse action when the internal pressure of the capacitor device 100 exceeds a safety threshold, disconnecting the electrical circuit between the electrode lead 104 and the capacitor core 102, thereby opening the capacitor device 100.

[0061] When fluctuations occur on the grid side, the operating voltage and current of the capacitor device 100 increase, causing the capacitor device 100 to heat up. When the capacitor device 100 heats up severely, the air inside the housing 108 of the capacitor device 100 expands due to the heat. When the heat exceeds a certain level, the electrolyte inside will also vaporize, which will cause a sudden increase in the internal pressure of the capacitor device 100. When the pressure is too high, the housing 108 will deform and the seal 110 will fail, causing the capacitor device 100 to open abnormally and the risk of electrolyte leakage.

[0062] The present application sets a fuse module 106 inside the housing 108. When the internal pressure increases, if the increased internal pressure exceeds the pressure threshold, the fuse module 106 will trigger protection under the action of pressure, specifically disconnecting the electrical circuit between the electrode lead 104 and the capacitor core 102. At this time, the capacitor device 100 is open, which can prevent the state of the capacitor device 100 from further deteriorating. After the capacitor device 100 is open, the temperature of the capacitor device 100 decreases over time, and the internal pressure will gradually decrease. When the internal pressure drops below the pressure threshold, the fuse module 106 is no longer triggered. At this time, the fuse module 106 restores the electrical circuit between the electrode lead 104 and the capacitor core 102, and the capacitor device 100 resumes work.

[0063] The present application sets a fuse module 106 capable of sensing pressure changes inside the sealed shell 108 of the capacitor device 100. When the internal pressure of the capacitor module increases, the fuse module 106 can effectively open the circuit of the capacitor device 100, thereby preventing the internal pressure from being too high and causing the capacitor device 100 to fail, thereby improving circuit safety.

[0064] In some embodiments of the present application, Figure 2 As shown, the fuse module 106 is a pressure switch device, and the capacitor device 100 further includes a connector 112 . The fuse module 106 is connected to the capacitor core 102 via the connector 112 , and the fuse module 106 and the capacitor core 102 are spaced apart.

[0065] In an embodiment of the present application, the fuse module 106 is specifically a pressure switch device, which is arranged in a housing 108. At least one electrode lead 104 of the capacitor device 100 is connected to one end of the pressure switch device through a circuit connection line, and the other end of the pressure switch device is electrically connected to the capacitor core 102 through a connector 112, thereby realizing an electrical circuit between the electrode lead 104 and the capacitor core 102.

[0066] When the internal pressure of the capacitor device 100 is lower than the pressure threshold that can trigger the action of the pressure switch device, the pressure switch device is in a closed state. At this time, the electrical circuit between the electrode lead 104 and the capacitor core 102 is connected, and the capacitor device 100 can charge and discharge normally. When there is a power grid fluctuation, the operating state of the capacitor device 100 deteriorates. For example, when the operating voltage or operating current of the capacitor device 100 exceeds the limit, the temperature of the capacitor device 100 rises and the internal pressure increases. When the internal pressure is greater than the pressure threshold that can trigger the action of the pressure switch device, the pressure switch device is triggered. At this time, the pressure switch device switches from a closed state to an off state. At this time, the electrical circuit between the electrode lead 104 and the capacitor core 102 is disconnected, and the capacitor device 100 is open, preventing the capacitor device 100 from continuing to heat up and causing the internal pressure to continue to rise.

[0067] After the capacitor device 100 opens, it stops operating. During this time, the temperature of the capacitor device 100 gradually decreases, and so does the internal pressure. When the internal pressure of the capacitor device 100 drops below the pressure threshold that triggers the pressure switch, the pressure switch is no longer triggered and returns to its closed state. The electrical circuit between the electrode lead 104 and the capacitor core 102 is restored, and the capacitor device 100 can now charge and discharge normally.

[0068] Among them, spacing the pressure switch device from the capacitor core 102 can increase the area of ​​the pressure switch device affected by the internal pressure, thereby increasing the sensitivity of the pressure switch device to the internal pressure of the capacitor device 100 and further improving the reliability of the fuse module 106.

[0069] In the embodiment of the present application, a pressure switching device is provided inside the capacitor device 100. When power grid fluctuations cause the temperature of the capacitor device 100 to rise and the internal pressure of the capacitor device 100 to increase, the pressure switching device can open the capacitor device 100 before the capacitor device 100 opens due to the increase in internal pressure, thereby effectively avoiding the capacitor device 100 from opening due to excessive pressure and improving the safety and reliability of the power supply circuit 200.

[0070] A second aspect of the present application provides a power supply circuit 200, Figure 3 2 shows a circuit diagram of a power supply circuit 200 according to some embodiments of the present application. Figure 3 As shown, the power supply circuit 200 includes: a rectifier module 202 , the input end of the rectifier module 202 is used to connect to the power grid; and a capacitor device 100 , the capacitor device 100 is electrically connected to the output end of the rectifier module 202 .

[0071] In an embodiment of the present application, the power supply circuit 200 can be a power supply circuit 200 that supplies power to internal electrical components of electronic devices such as mobile phones, a charging circuit that charges a battery, or a power supply circuit 200 that supplies power to other DC electrical devices.

[0072] Power supply circuit 200 includes a rectifier module 202. Its input is connected to the power grid, where it rectifies the AC voltage input from the grid and outputs a pulsating DC voltage. The aforementioned capacitor device 100 is located at the output of rectifier module 202. Leveraging the charge and discharge characteristics of capacitor device 100, the rectified pulsating DC voltage is converted into a relatively stable DC voltage, which is then used to supply power to the load.

[0073] When the power grid at the input side of the rectifier module 202 fluctuates, or when the load condition changes significantly, a sudden voltage change caused by the voltage fluctuation will be generated in the power supply circuit 200, and the capacitor device 100 needs to withstand the sudden voltage change.

[0074] When a sudden voltage occurs, if the operating state of the capacitor device 100 exceeds the safety threshold range, the fuse module 106 in the capacitor device 100 will be activated to disconnect the electrical circuit between the electrode lead 104 of the capacitor device 100 and the capacitor core 102. At this time, the capacitor device 100 is open-circuited, which can prevent the capacitor device 100 from further heating up, avoid problems such as electrolyte leakage caused by failure of the capacitor device 100, and prevent electrolyte leakage from corroding and damaging the power supply circuit 200 and other electrical components on the circuit board, thereby improving the safety and reliability of the power supply circuit 200.

[0075] In some embodiments of the present application, an electronic device is provided, which includes a capacitor device as provided in any of the above embodiments, and / or a power supply circuit as provided in any of the above embodiments, and therefore also includes all the beneficial effects of the capacitor device provided in any of the above embodiments and / or the power supply circuit provided in any of the above embodiments. To avoid repetition, they will not be repeated here.

[0076] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0077] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A capacitor device, characterized in that: The capacitor device comprises: Capacitor core; An electrode lead, the electrode lead being electrically connected to the capacitor core; A fuse module is connected in series to the electrical circuit between the electrode lead and the capacitor core, and is configured to disconnect the electrical circuit between the electrode lead and the capacitor core when the operating state of the capacitor device meets a preset operating state.

2. The capacitive device according to claim 1, characterized in that: The capacitor device further comprises: A shell, the capacitor core is located in the shell, one end of the shell includes an opening, at least part of the electrode lead passes through the opening; A sealing member is connected to the shell and seals the opening.

3. The capacitive device according to claim 2, characterized in that: The insurance module is arranged in the sealing member, the operating state of the capacitor device includes an operating current, the preset operating state includes a current threshold, and the insurance module is configured to detect the operating current and, when the operating current exceeds the current threshold, disconnect the electrical circuit between the electrode lead and the capacitor core.

4. The capacitive device according to claim 2, characterized in that: The insurance module is arranged in the sealing member, the operating state of the capacitor device includes an operating voltage, the preset operating state includes a voltage threshold, and the insurance module is configured to detect the operating voltage and, when the operating voltage exceeds the voltage threshold, disconnect the electrical circuit between the electrode lead and the capacitor core.

5. The capacitive device according to claim 2, characterized in that: The insurance module is arranged in the sealing member, the operating state of the capacitor device includes the operating temperature, the preset operating state includes a temperature threshold, and the insurance module is configured to detect the operating temperature and, when the operating temperature exceeds the temperature threshold, disconnect the electrical circuit between the electrode lead and the capacitor core.

6. The capacitive device according to claim 2, characterized in that: The fuse module is a current fuse, a voltage fuse or a temperature fuse.

7. The capacitive device according to claim 2, characterized in that: The insurance module is arranged in the housing, and the insurance module is located at a side of the capacitor core away from the opening; The operating state of the capacitor device includes an internal pressure value, the preset operating state includes a pressure threshold, and the insurance module is configured to disconnect the electrical circuit between the electrode lead and the capacitor core when the internal pressure value exceeds the pressure threshold.

8. The capacitive device according to claim 7, characterized in that: The insurance module is a pressure switch device, and the capacitor device further includes a connecting member. The insurance module is connected to the capacitor core via the connecting member, and the insurance module and the capacitor core are spaced apart.

9. A power supply circuit, characterized in that: include: A rectifier module, wherein the input end of the rectifier module is used to connect to a power grid; The capacitor device according to any one of claims 1 to 8, wherein the capacitor device is electrically connected to an output end of the rectifier module.

10. An electronic device, characterized in that: include: The capacitive device according to any one of claims 1 to 8; and / or The power supply circuit as claimed in claim 9.

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