Anti-sparking power circuit breaker, power adapter, battery pack and intelligent furniture

Abstract

The utility model provides an anti-sparking power circuit breaker, a power adapter, a battery pack and intelligent furniture. The circuit comprises an anti-sparking detection module and an anti-sparking control module. The anti-sparking detection module comprises a power transmission processor, an anti-sparking comparator, a current detection resistor, a normal-phase resistor, a first anti-phase resistor and a second anti-phase resistor, the first end of the current detection resistor is used for being connected with a power grounding wire of the electric equipment, and the first end of the current detection resistor is further connected with the first end of the normal-phase resistor; the second end of the normal-phase resistor is connected with the normal-phase input end of the anti-sparking comparator, the second end of the current detection resistor is connected with the first end of the first anti-phase resistor and grounded, and the second end of the current detection resistor is connected with the anti-phase input end of the anti-sparking comparator. The second end of the current detection resistor is further connected with the output end of the anti-sparking comparator through a second inverting resistor, and the anti-sparking output end of the power transmission processor is used for controlling the on-off of the anti-sparking control module.

Description

Technical Field

[0001] This disclosure relates to the field of circuit breaker technology, and in particular to a fire-resistant power circuit breaker, a power adapter, a battery pack, and smart home devices. Background Technology

[0002] Circuit breakers are used to provide a range of characteristics necessary to ensure the proper functioning of the power system in which they operate and the loads connected to them. For example, they guarantee the rated current required by various users, allow the correct addition or disconnection of loads in the circuit, protect loads from abnormal events such as overloads and short circuits by automatically disconnecting the circuit, allow the protected circuit to be disconnected by electrical separation or opening appropriate contacts, and completely insulate the load from the power source.

[0003] Currently, products are developing towards greater intelligence and practicality to provide customers with a better user experience. Intelligence and practicality require the use of relevant circuitry. This technological advancement comes with a side effect: product safety. For example, short circuits, micro-short circuits, or overcurrent issues in smart furniture circuits can cause accidental fires. Since smart furniture often uses many flammable materials, such fires could ignite, increasing the safety risks. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a fire-resistant power circuit breaker, power adapter, battery pack, and smart home that effectively improves safety in use.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] A fire-resistant power circuit breaker includes: a fire-resistant detection module and a fire-resistant control module; the power supply terminal of the fire-resistant detection module is used to connect to a reference power supply, and the sampling detection terminal of the fire-resistant detection module is used to connect to the power cord of the electrical equipment to sample the short-circuit or overcurrent state of the electrical equipment; the input terminal of the fire-resistant control module is used to connect to the power cord of the power supply equipment, and the output terminal of the fire-resistant control module is used to connect to the power cord of the electrical equipment; the fire-resistant control module disconnects the power supply when the electrical equipment is in a short-circuit or overcurrent state.

[0007] In one embodiment, the anti-sparking detection module includes a power transmission processor, an anti-sparking comparator, a current-sensing resistor, a non-inverting resistor, a first inverting resistor, and a second inverting resistor. The first end of the current-sensing resistor is connected to the power grounding wire of the electrical equipment. The first end of the current-sensing resistor is also connected to the first end of the non-inverting resistor. The second end of the non-inverting resistor is connected to the non-inverting input terminal of the anti-sparking comparator. The second end of the current-sensing resistor is connected to the first end of the first inverting resistor and grounded. The second end of the current-sensing resistor is connected to the inverting input terminal of the anti-sparking comparator. The second end of the current-sensing resistor is also connected to the output terminal of the anti-sparking comparator through the second inverting resistor. The output terminal of the anti-sparking comparator is connected to the anti-sparking sampling terminal of the power transmission processor. The anti-sparking output terminal of the power transmission processor is used to control the on / off state of the anti-sparking control module.

[0008] In one embodiment, the anti-sparking power circuit breaker further includes a passive switching module, which includes a first electronic switch, a second electronic switch, a first resistor, a second resistor, and a first anti-sinking diode. A first terminal of the first electronic switch is connected to the power supply terminal of the power transmission processor, and a second terminal of the first electronic switch is connected to the passive switching detection terminal of the power transmission processor. The power supply terminal of the power transmission processor is connected to the second terminal of the second electronic switch, and a first terminal of the second electronic switch is connected to the control terminal of the first electronic switch. The power supply terminal of the power transmission processor is also connected to the first terminal of the first resistor, and the second terminal of the first resistor is connected to the second electronic switch. The control terminal is connected to the first terminal of the second resistor. The second terminal of the second resistor is connected to the passive on / off detection terminal of the power transmission processor and the positive terminal of the first anti-sinking diode. The negative terminal of the first anti-sinking diode is used to connect to the power line of the electrical equipment. The anti-sparking control module includes a relay switch and a third electronic switch. The input terminal of the relay switch is used to connect to the power line of the power supply equipment, and the output terminal of the relay switch is connected to the negative terminal of the first anti-sinking diode. The on / off control terminal of the relay switch is connected to the first terminal of the third electronic switch. The second terminal of the third electronic switch is grounded, and the control terminal of the third electronic switch is connected to the anti-sparking control output terminal of the power transmission processor. Passive On / Off Module Anti-Sparking Control Module

[0009] In one embodiment, the passive switching module further includes a third resistor, the control terminal of the first electronic switch is connected to the first terminal of the third resistor, and the second terminal of the third resistor is grounded.

[0010] In one embodiment, the passive switching module further includes an energy storage capacitor, the first end of which is connected to the second end of the second electronic switch tube, and the second end of which is connected to the control terminal of the first electronic switch tube.

[0011] In one embodiment, the anti-sparking control module further includes a fourth resistor, the first end of which is connected to the anti-sparking control output terminal of the power transmission processor, and the second end of which is connected to the control terminal of the third electronic switch.

[0012] In one embodiment, the anti-sparking control module further includes a fifth resistor, and the control terminal of the third electronic switch is grounded through the fifth resistor.

[0013] In one embodiment, the passive power-on module includes a seventh resistor, an eighth resistor, and a second anti-sinking diode. The first end of the seventh resistor is connected to the power supply terminal of the power transmission processor. The power supply terminal of the power transmission processor is connected to the first end of the eighth resistor. The second end of the eighth resistor is connected to the anode of the second anti-sinking diode. The second end of the seventh resistor is connected to the passive power-on detection terminal of the power transmission processor. The second end of the seventh resistor is also connected to the anode of the second anti-sinking diode. The cathode of the second anti-sinking diode is used to connect to the power cord of the electrical device.

[0014] A power adapter comprising the anti-sparking power circuit breaker described in any of the above embodiments.

[0015] A battery pack comprising the anti-sparking power circuit breaker described in any of the above embodiments.

[0016] A smart furniture comprising the anti-sparking power circuit breaker described in any of the above embodiments.

[0017] Compared with the prior art, this disclosure has at least the following advantages:

[0018] In the event of a short circuit or overcurrent, excessive current flows through the power supply grounding wire of the electrical equipment, increasing the voltage difference across the current sensing resistor. This causes the positive comparison input voltage of the anti-spark comparator to be much greater than the negative comparison input voltage, resulting in a change in the voltage at the output of the anti-spark comparator. For example, the voltage at the output of the anti-spark comparator changes from a low level to a high level. The anti-spark sampling terminal of the power transmission processor detects this voltage change synchronously. By sampling this voltage change, a signal is output to control the on / off state of the anti-spark control module. Specifically, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, ensuring timely disconnection of the power output and preventing sparking. This effectively improves the safety of the electrical equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a circuit diagram of an anti-sparking power circuit breaker in one embodiment;

[0021] Figure 2 for Figure 1 The circuit diagram of the main control section of the anti-sparking detection module of the anti-sparking power circuit breaker shown.

[0022] Figure 3 for Figure 1 The circuit diagram of the detection section of the anti-sparking detection module of the anti-sparking power circuit breaker shown.

[0023] Figure 4 for Figure 1 The circuit diagram of the passive switching module of the anti-sparking power circuit breaker is shown.

[0024] Figure 5 for Figure 1 The circuit diagram of the anti-sparking control module of the anti-sparking power circuit breaker shown is as follows:

[0025] Figure 6 This is a circuit diagram of a passive switching module in another embodiment;

[0026] Figure 7 This is a schematic diagram of an anti-sparking power circuit breaker in one embodiment;

[0027] Figure 8 This is a schematic diagram of a power adapter in one embodiment;

[0028] Figure 9 This is a schematic diagram of a battery pack in one embodiment. Detailed Implementation

[0029] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] This disclosure relates to a fire-resistant power circuit breaker. In one embodiment, the fire-resistant power circuit breaker includes a fire-resistant detection module and a fire-resistant control module; the power supply terminal of the fire-resistant detection module is used to connect to a reference power supply, and the sampling detection terminal of the fire-resistant detection module is used to connect to the power cord of the electrical device to sample the short-circuit or overcurrent state of the electrical device; the input terminal of the fire-resistant control module is used to connect to the power cord of the power supply device, and the output terminal of the fire-resistant control module is used to connect to the power cord of the electrical device; the fire-resistant control module disconnects the power supply when the electrical device is in a short-circuit or overcurrent state. The anti-sparking detection module includes a power transmission processor, an anti-sparking comparator, a current-sensing resistor, a non-inverting resistor, a first inverting resistor, and a second inverting resistor. The first end of the current-sensing resistor is connected to the power grounding wire of the electrical equipment. The first end of the current-sensing resistor is also connected to the first end of the non-inverting resistor. The second end of the non-inverting resistor is connected to the non-inverting input terminal of the anti-sparking comparator. The second end of the current-sensing resistor is connected to the first end of the first inverting resistor and grounded. The second end of the current-sensing resistor is connected to the inverting input terminal of the anti-sparking comparator. The second end of the current-sensing resistor is also connected to the output terminal of the anti-sparking comparator through the second inverting resistor. The output terminal of the anti-sparking comparator is connected to the anti-sparking sampling terminal of the power transmission processor. The anti-sparking output terminal of the power transmission processor is used to control the on / off state of the anti-sparking control module. When a short circuit or overcurrent occurs, the passive connection module of the passive connection terminal experiences excessive current flowing through the power grounding wire of the electrical equipment. This increases the voltage difference across the current sensing resistor, causing the positive comparison input voltage of the anti-spark comparator to be much greater than the negative comparison input voltage. Consequently, the voltage at the output of the anti-spark comparator changes; for example, the output voltage changes from low to high. The anti-spark sampling terminal of the power transmission processor detects this voltage change synchronously. By sampling this voltage change, a signal is output to control the on / off state of the anti-spark control module. Specifically, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, allowing the passive connection module to promptly disconnect the power output, preventing sparking and effectively improving the safety of the electrical equipment.

[0033] Please see Figure 1 This is a circuit diagram of an anti-sparking power circuit breaker according to an embodiment of the present disclosure.

[0034] An embodiment of the anti-sparking power circuit breaker 10 includes an anti-sparking detection module 100 and an anti-sparking control module 200. The power supply terminal of the anti-sparking detection module is connected to a reference power supply, for example, a reference power supply formed by transformer conversion of the voltage of the power supply equipment, with a voltage of 3.3V. The sampling detection terminal of the anti-sparking detection module is connected to the power cord of the electrical equipment to sample the short-circuit or overcurrent state of the electrical equipment. The input terminal of the anti-sparking control module is connected to the power cord of the power supply equipment, and the output terminal of the anti-sparking control module is connected to the power cord of the electrical equipment. The anti-sparking control module disconnects the power supply when the electrical equipment is in a short-circuit or overcurrent state. Please refer to the following: Figure 2 and Figure 3 The anti-sparking detection module 100 includes a power transmission processor U4, an anti-sparking comparator U3-A, a current-sensing resistor R3, a non-inverting resistor R14, a first inverting resistor R15, and a second inverting resistor R16. The first terminal of the current-sensing resistor R3 is connected to the power grounding wire PGND of the electrical equipment. The first terminal of the current-sensing resistor R3 is also connected to the first terminal of the non-inverting resistor R14. The second terminal of the non-inverting resistor R14 is connected to the non-inverting input terminal of the anti-sparking comparator U3-A. The second terminal is connected to the first terminal of the first inverting resistor R15 and grounded. The second terminal of the current sensing resistor R3 is connected to the inverting input terminal of the anti-spark comparator U3-A. The second terminal of the current sensing resistor R3 is also connected to the output terminal OC of the anti-spark comparator U3-A through the second inverting resistor R16. The output terminal of the anti-spark comparator U3-A is connected to the passive on / off detection terminal of the power transmission processor. The anti-spark output terminal of the power transmission processor is used to control the on / off state of the anti-spark control module 200.

[0035] In the event of a short circuit or overcurrent, excessive current flows through the power supply grounding wire of the electrical equipment, increasing the voltage difference across the current sensing resistor R3. This causes the positive comparison input voltage of the anti-spark comparator U3-A to be much greater than the negative comparison input voltage, resulting in a voltage change at the output of the anti-spark comparator U3-A. For example, the output voltage of the anti-spark comparator U3-A changes from a low level to a high level. The anti-spark sampling terminal of the power transmission processor detects this voltage change synchronously. By sampling this voltage change, a signal is output to control the on / off state of the anti-spark control module. Specifically, the anti-spark output terminal PWR_ENB of the power transmission processor outputs a signal to disconnect the anti-spark control module, ensuring timely disconnection of the power output and preventing sparking, thus effectively improving the safety of the electrical equipment.

[0036] In another embodiment, the non-inverting input of the anti-spark comparator is its port 1, the inverting input is its port 3, the output is its port 4, and the chip power supply positive and negative terminals are its ports 2 and 5.

[0037] In another embodiment, please refer to Figure 4 The anti-sparking power circuit breaker 10 further includes a passive switching module 300, which includes a first electronic switch Q3, a second electronic switch Q4, a first resistor R26, a second resistor R27, and a first anti-sinking diode D5. The first terminal of the first electronic switch Q3 is connected to the power supply terminal VDD_3V3 of the power transmission processor U4, and the second terminal of the first electronic switch Q3 is connected to the passive switching detection terminal KEY_DET of the power transmission processor U4. The power supply terminal VDD_3V3 of the power transmission processor U4 is connected to the second terminal of the second electronic switch Q4, and the first terminal of the second electronic switch Q4 is connected to the control terminal of the first electronic switch Q3. The power supply terminal VDD_3V3 of the power transmission processor U4 is also connected to the first terminal of the first resistor R26. The second terminal of the first resistor R26 is connected to the control terminal of the second electronic switch Q4 and the first terminal of the second resistor R27. The second terminal of the second resistor R27 is connected to the passive on-detection terminal KEY_DET of the power transmission processor U4 and the positive terminal of the first anti-sinking diode D5. The negative terminal of the first anti-sinking diode D5 is used to connect to the power line VOUT_28V0 of the electrical equipment.

[0038] Please refer to the following: Figure 5 The anti-sparking control module 200 includes a relay switch K1 and a third electronic switch Q1. The input terminal of the relay switch K1 is connected to the power supply line VIN_28V of the power supply equipment, and the output terminal of the relay switch K1 is connected to the negative terminal of the first anti-sinking diode D5. The on / off control terminal of the relay switch K1 is connected to the first terminal of the third electronic switch Q1, the second terminal of the third electronic switch Q1 is grounded, and the control terminal of the third electronic switch Q1 is connected to the anti-sparking control output terminal PWR_ENB of the power transmission processor U4.

[0039] When the electrical equipment is normally powered off, since the power supply line VOUT_28V0 of the electrical equipment is connected to the main power circuit, meaning that the power supply line VOUT_28V0 of the electrical equipment is not energized, the power supply line of the electrical equipment is suspended at this time, and the relay switch K1 of the main power supply circuit is open, causing the first electronic switch Q3 to conduct and the second electronic switch Q4 to be cut off. Thus, the power supply line VOUT_28V0 of the electrical equipment is supplied through the first electronic switch Q3 and the first anti-sinking diode D5. At this time, the passive connection detection terminal KEY_DET of the power transmission processor U4 is directly connected to the power supply terminal VDD_3V3 of the power transmission processor U4, and it is a relatively large current to prevent the weak current of the electrical equipment from causing the passive connection module 300 to malfunction. It provides detection voltage to the subsequent electrical equipment in the main circuit, so that the voltage of the passive connection detection terminal KEY_DET of the power transmission processor U4 is about 3.3V, which is a high level.

[0040] When the electrical equipment is powered on normally, the subsequent electrical equipment in the main circuit needs to be supplied with current by the passive connection module 300. For example, when triggered by the power switch button of the electrical equipment, the current on the power line VOUT_28V0 of the electrical equipment is very weak. At this time, the voltage drop across the first resistor R26 and the second resistor R27 is close to the 3.3V voltage of the power supply terminal VDD_3V3 of the power transmission processor U4, causing the first electronic switch Q3 to be cut off and the second electronic switch Q4 to be turned on. That is, the power line VOUT_28V0 of the electrical equipment is supplied by the power supply terminal VDD_3V3 of the power transmission processor U4 through the BE junction of the second electronic switch Q4 and... The second resistor R27 and the first anti-sinking diode D5 provide a very weak current, insufficient to support the power supply of the main circuit equipment. This causes the power line VOUT_28V0 of the equipment to be pulled low, which in turn pulls the voltage of the passive on / off detection terminal KEY_DET of the power transmission processor U4 low. At this time, the passive on / off detection terminal KEY_DET of the power transmission processor U4 is at a low level. Thus, the voltage change from high to low at the passive on / off detection terminal KEY_DET of the power transmission processor U4 facilitates the conduction of the third electronic switch Q1, thereby turning on the relay switch K1 to start supplying power to the equipment. The button signal is transmitted to the power transmission processor U4 through the power line of the equipment. For example, the button current generated by the power button of the drive motor of a smart sofa enables the equipment to be powered on by pressing the button when there is no power supply. Moreover, when the electrical equipment is in normal power supply, the first electronic switch Q3 remains off, the second electronic switch Q4 remains on, which keeps the third electronic switch Q1 on, thereby keeping the relay switch K1 on.

[0041] When a short circuit or overcurrent occurs in the electrical equipment, the voltage difference across the current sensing resistor R3 increases. The output of the anti-spark comparator U3-A sends a signal to the anti-spark sampling terminal of the power transmission processor to determine if there is a short circuit or overcurrent in the electrical equipment. At this time, the output voltage of the anti-spark output terminal of the power transmission processor controls the third electronic switch Q1 to turn off, so that the relay switch K1 is turned off in time, which facilitates the timely disconnection of the power output, prevents sparking, and effectively improves the safety of the electrical equipment.

[0042] In this circuit, both the input and output terminals of the relay switch K1 are power lines. Specifically, the input terminal of the relay switch K1 is connected to the power line VIN_28V of the power supply equipment, and the output terminal of the relay switch K1 is connected to the power line VOUT_28V0 of the power consumption equipment. The passive on / off detection terminal KEY_DET of the power transmission processor U4 is connected to the power line VOUT_28V0 of the power consumption equipment through the first anti-sinking diode D5. The on / off states of the first electronic switch Q3 and the second electronic switch Q4 correspond to the power consumption state of the power consumption equipment. The passive on / off detection terminal KEY_DET of the power transmission processor U4 determines the current operating state of the power consumption equipment based on the on / off states of the first electronic switch Q3 and the second electronic switch Q4, for example, the power consumption equipment is passively on.

[0043] In this way, by controlling the on / off states of the first electronic switch Q3 and the second electronic switch Q4 through the current changes on the power line, the passive on / off detection terminal KEY_DET of the power transmission processor U4 can easily obtain the operating status of the electrical equipment. This allows the power transmission processor U4 to control the on / off state of the third electronic switch Q1, thereby facilitating the adjustment of the on / off state of the relay switch K1. Furthermore, by converting the signal on the power line into a signal controlling the power on / off state for transmission, the power line simultaneously performs both power transmission and signal transmission, eliminating the need for a separate signal line and requiring no changes to the internal wiring of the electrical equipment.

[0044] In another embodiment, when power is available, relay switch K1 receives voltage and begins to operate, while the power switch remains closed, meaning the third electronic switch Q1 is off. The subsequent circuits of relay switch K1 are not powered, thus maintaining a safe state. When a customer needs to adjust the sofa footrest and backrest angle, they press a button on the sofa / bed's control panel. The button information is transmitted via a single power line to the main control chip, for example, the power transmission processor U4. Upon receiving the data, the main control chip turns on the power switch to power the subsequent products, driving the motor to complete the corresponding actions. If a short circuit / micro-short circuit or excessive current occurs in the subsequent circuits, the anti-spark detection module 100 transmits the detected signal to the main control chip. The main control chip then controls the power switch to shut off the power to the subsequent devices, thus achieving safety protection. When the user is not using the external devices, the main control chip will also periodically turn off the power switch, achieving a dual safety protection effect.

[0045] In another embodiment, the first electronic switch Q3 is a P-type MOS transistor, the first terminal of the first electronic switch Q3 is the source of the P-type MOS transistor, the second terminal of the first electronic switch Q3 is the drain of the P-type MOS transistor, and the control terminal of the first electronic switch Q3 is the gate of the P-type MOS transistor.

[0046] In another embodiment, the second electronic switch Q4 is a PNP transistor, the first terminal of the second electronic switch Q4 is the collector of the PNP transistor, the second terminal of the second electronic switch Q4 is the emitter of the PNP transistor, and the control terminal of the second electronic switch Q4 is the base of the PNP transistor.

[0047] In another embodiment, the third electronic switch Q1 is an NPN transistor, the first terminal of the third electronic switch Q1 is the collector of the NPN transistor, the second terminal of the third electronic switch Q1 is the emitter of the NPN transistor, and the control terminal of the third electronic switch Q1 is the base of the NPN transistor.

[0048] In one embodiment, please refer to Figure 4 The passive switching module 300 further includes a third resistor R25. The control terminal of the first electronic switch Q3 is connected to the first terminal of the third resistor R25, and the second terminal of the third resistor R25 is grounded. In this embodiment, the third resistor R25 is connected in series with the first terminal of the second electronic switch Q4. Specifically, the first terminal of the third resistor R25 is connected to both the control terminal of the first electronic switch Q3 and the first terminal of the second electronic switch Q4. The third resistor R25 serves as a pull-up resistor for the first terminal of the second electronic switch Q4, providing a stable static state for the second electronic switch Q4.

[0049] In one embodiment, please refer to Figure 4 The passive switching module 300 further includes an energy storage capacitor C6. The first end of the energy storage capacitor C6 is connected to the second end of the second electronic switch Q4, and the second end of the energy storage capacitor C6 is connected to the control terminal of the first electronic switch Q3. In this embodiment, the energy storage capacitor C6 is connected in parallel with the second electronic switch Q4. Specifically, the energy storage capacitor C6 is connected in parallel between the first and second ends of the second electronic switch Q4, so that the energy storage capacitor C6 is connected in series with the third resistor R25, facilitating the formation of an RC filter circuit. This ensures stable switching of the on / off state of the second electronic switch Q4. Furthermore, the energy storage capacitor C6 stores some of the electrical energy of the second electronic switch Q4 during the switching process, preventing the voltage of the power supply terminal VDD_3V3 of the power transmission processor U4 from being pulled low.

[0050] In another embodiment, please refer to Figure 4 The passive turn-on module 300 further includes a ninth resistor R24. The second terminal of the first electronic switch Q3 is connected to the passive turn-on detection terminal KEY_DET of the power transfer processor U4 through the ninth resistor R24. In this embodiment, the ninth resistor R24 ​​is connected in series between the second terminal of the first electronic switch Q3 and the passive turn-on detection terminal KEY_DET of the power transfer processor U4. The ninth resistor R24 ​​limits the current flowing into the passive turn-on detection terminal KEY_DET of the power transfer processor U4. While ensuring the accuracy of the sampling voltage, it can effectively reduce the current surge to the power transfer processor U4, thereby improving the sampling stability of the power transfer processor U4.

[0051] In one embodiment, please refer to Figure 5 The anti-sparking control module 200 further includes a fourth resistor R69. The first end of the fourth resistor R69 is connected to the anti-sparking control output terminal PWR_ENB of the power transmission processor U4, and the second end of the fourth resistor R69 is connected to the control terminal of the third electronic switch Q1. In this embodiment, the fourth resistor R69 is connected in series with the control terminal of the third electronic switch Q1. Specifically, the two ends of the fourth resistor R69 are connected to the anti-sparking control output terminal PWR_ENB of the power transmission processor U4 and the control terminal of the third electronic switch Q1, respectively. The fourth resistor R69 limits the current output from the anti-sparking control output terminal PWR_ENB of the power transmission processor U4, ensuring precise on / off switching of the third electronic switch Q1 and improving the switching stability of the third electronic switch Q1.

[0052] In one embodiment, please refer to Figure 5The anti-sparking control module 200 further includes a fifth resistor R8, and the control terminal of the third electronic switch Q1 is grounded through the fifth resistor R8. In this embodiment, the fifth resistor R8 is connected in parallel between the control terminal and the second terminal of the third electronic switch Q1. Specifically, the first terminal of the fifth resistor R8 is connected to the control terminal of the third electronic switch Q1, and the second terminal of the fifth resistor R8 is connected to the second terminal of the third electronic switch Q1. The fifth resistor R8 and the fourth resistor R69 form a voltage divider circuit, and the voltage across the fifth resistor R8 serves as the on / off voltage of the third electronic switch Q1. By adjusting the resistance ratio of the fifth resistor R8 to the fourth resistor R69, the on / off control of the third electronic switch Q1 can be easily achieved.

[0053] In one embodiment, please refer to Figure 5 The anti-sparking control module 200 further includes a sixth resistor R64. The first end of the sixth resistor R64 is connected to the on / off control terminal of the relay switch K1, and the second end of the sixth resistor R64 is connected to the first end of the third electronic switch Q1. In this embodiment, the sixth resistor R64 is connected in series with the first end of the third electronic switch Q1. Specifically, the two ends of the sixth resistor R64 are connected to the first end of the third electronic switch Q1 and the on / off control terminal of the relay switch K1, respectively. The sixth resistor R64 limits the current flowing through the third electronic switch Q1. Moreover, the sixth resistor R64 serves as a pull-up resistor for the first end of the third electronic switch Q1, facilitating the provision of a stable on / off current for the third electronic switch Q1, thereby facilitating precise control of the on / off state of the relay switch K1.

[0054] Further, please refer to Figure 5The anti-sparking control module 200 further includes a relay control diode D1. The first terminal of the sixth resistor R64 is connected to the positive terminal of the relay control diode D1 and the first control terminal of the relay switch K1, respectively. The negative terminal of the relay control diode D1 is connected to the second control terminal of the relay switch K1 and the power supply line VIN_28V of the power supply equipment. In this embodiment, the relay control diode D1 is connected in parallel to the control terminal of the relay switch K1. Specifically, the relay control diode D1 is connected in parallel to the magnetic coil in the relay switch K1. By controlling the on / off state of the third electronic switch Q1, the on / off state of the relay switch K1 can be easily controlled, so that the relay switch K1 can disconnect the power output in time in the event of a short circuit or overcurrent in the external electrical equipment, thereby improving the working stability and timeliness of the relay switch K1. Moreover, the relay control diode D1 can also prevent the voltage on the power line from flowing back to the third electronic switch Q1, effectively protecting the normal operation of the third electronic switch Q1.

[0055] In one embodiment, please refer to Figure 6The passive power-on module 300 includes a seventh resistor R5, an eighth resistor R4, and a second anti-sinking diode D2. The power supply terminal VDD_3V3 of the power transmission processor is connected to the first terminal of the eighth resistor R4, and the second terminal of the eighth resistor R4 is connected to the positive terminal of the second anti-sinking diode D2. The first terminal of the seventh resistor R5 is connected to the passive power-on detection terminal KEY_DET of the power transmission processor, and the second terminal of the seventh resistor R5 is connected to the positive terminal of the second anti-sinking diode D2. The negative terminal of the second anti-sinking diode D2 is used to connect to the power cord of the electrical equipment. In this embodiment, the seventh resistor R5 is located between the passive power-on detection terminal KEY_DET of the power transmission processor and the power supply terminal of the power transmission processor. The seventh resistor R5 serves as a pull-down resistor for the passive power-on detection terminal KEY_DET of the power transmission processor. When the power supply equipment is normally de-energized, that is, when the power supply line VOUT_28V0 of the power supply equipment is not energized, the power supply line of the power supply equipment is floating, and the relay switch K1 of the main power supply circuit is open. The power supply line VOUT_28V0 of the power supply equipment is supplied through the eighth resistor R4 and the second anti-sinking diode D2, with a voltage of approximately 3.3V. The voltage of the detection terminal KEY_DET of the power transmission processor is also approximately 3.3V, making the passive power-on detection terminal KEY_DET of the power transmission processor high. When the power supply equipment is normally powered on, the subsequent power supply equipment in the main circuit needs to be powered by the passive power-on mode. Block 300 provides current. The power supply terminal VDD_3V3 of the power transmission processor provides current to the subsequent electrical equipment through the eighth resistor R4 and the second anti-sinking diode D2. This current is insufficient to support the power supply of the subsequent electrical equipment in the main circuit, thus pulling the power line VOUT_28V0 of the electrical equipment low. At this time, the detection terminal KEY_DET of the power transmission processor is also pulled low, completing the detection required by the subsequent equipment in the main circuit. The current on the power line VOUT_28V0 of the electrical equipment is very weak. At this time, the voltage drop on the seventh resistor R5 is close to the 3.3V voltage of the power supply terminal VDD_3V3 of the power transmission processor, causing the voltage of the passive connection detection terminal KEY_DET of the power transmission processor to change from high level to low level, so as to facilitate the control of the anti-sparking control module 200 to conduct through the power transmission processor. Specifically, the relay switch K1 conducts to supply power to the electrical equipment.

[0056] In one embodiment, the fire-resistant power circuit breaker is connected as a separate product between the power adapter and the electrical equipment, as detailed in the appendix. Figure 7 .

[0057] In one embodiment, this disclosure also relates to a power adapter including the circuit breaker described in the above embodiments. In this embodiment, the circuit breaker and the power supply section are encapsulated within the power adapter, i.e., the circuit breaker is integrated within the power adapter, as detailed in the appendix. Figure 8 The circuit breaker includes the anti-sparking power circuit breaker described in any of the above embodiments. The anti-sparking power circuit breaker includes an anti-sparking detection module and an anti-sparking control module. The power supply terminal of the anti-sparking detection module is used to connect to a reference power supply, and the sampling detection terminal of the anti-sparking detection module is used to connect to the power line of the electrical equipment to sample the short-circuit or overcurrent state of the electrical equipment. The input terminal of the anti-sparking control module is used to connect to the power line of the power supply equipment, and the output terminal of the anti-sparking control module is used to connect to the power line of the electrical equipment. The anti-sparking control module disconnects the power supply when the electrical equipment is in a short-circuit or overcurrent state. The anti-sparking detection module includes a power transmission processor, an anti-sparking comparator U3-A, a current sensing resistor R3, a forward resistor R14, a first reverse resistor R15, and a second reverse resistor R16. The first end of the current sensing resistor R3 is used for... The current sensing resistor R3 is connected to the power grounding wire of the electrical equipment. The first end of the current sensing resistor R3 is also connected to the first end of the positive phase resistor R14. The second end of the positive phase resistor R14 is connected to the positive phase input terminal of the anti-spark comparator U3-A. The second end of the current sensing resistor R3 is connected to the first end of the first negative phase resistor R15 and grounded. The second end of the current sensing resistor R3 is connected to the negative phase input terminal of the anti-spark comparator U3-A. The second end of the current sensing resistor R3 is also connected to the output terminal of the anti-spark comparator U3-A through the second negative phase resistor R16. The output terminal of the anti-spark comparator U3-A is connected to the anti-spark sampling terminal of the power transmission processor. The anti-spark output terminal of the power transmission processor is used to control the on / off state of the anti-spark control module. In the event of a short circuit or overcurrent, excessive current flows through the power supply grounding wire of the electrical equipment, increasing the voltage difference across the current sensing resistor R3. This causes the positive comparison input voltage of the anti-spark comparator U3-A to be much greater than the negative comparison input voltage, resulting in a change in the voltage at the output terminal of the anti-spark comparator U3-A. For example, the voltage at the output terminal of the anti-spark comparator U3-A changes from a low level to a high level. The voltage change detected synchronously by the anti-spark sampling terminal of the power transmission processor is sampled to facilitate the output of a signal to control the on / off state of the anti-spark control module. Specifically, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, ensuring timely disconnection of the power output and preventing sparking, thus effectively improving the safety of the electrical equipment.

[0058] In another embodiment, the power adapter with the aforementioned anti-sparking power circuit breaker is applied to the control system of the micro-pair mobile switch. Only the power adapter needs to be replaced with the power supply in the control system, and no other parts need to be changed.

[0059] In one embodiment, this disclosure also relates to a battery pack including the circuit breaker described in the above embodiments. In this embodiment, the circuit breaker is integrated within the battery pack, as detailed in the appendix. Figure 9 The circuit breaker includes the anti-sparking power circuit breaker described in any of the above embodiments. The anti-sparking power circuit breaker includes an anti-sparking detection module and an anti-sparking control module. The power supply terminal of the anti-sparking detection module is used to connect to a reference power supply, and the sampling detection terminal of the anti-sparking detection module is used to connect to the power line of the electrical equipment to sample the short-circuit or overcurrent state of the electrical equipment. The input terminal of the anti-sparking control module is used to connect to the power line of the power supply equipment, and the output terminal of the anti-sparking control module is used to connect to the power line of the electrical equipment. The anti-sparking control module disconnects the power supply when the electrical equipment is in a short-circuit or overcurrent state. The anti-sparking detection module includes a power transmission processor, an anti-sparking comparator U3-A, a current sensing resistor R3, a forward resistor R14, a first reverse resistor R15, and a second reverse resistor R16. The first end of the current sensing resistor R3 is used for... The current sensing resistor R3 is connected to the power grounding wire of the electrical equipment. The first end of the current sensing resistor R3 is also connected to the first end of the positive phase resistor R14. The second end of the positive phase resistor R14 is connected to the positive phase input terminal of the anti-spark comparator U3-A. The second end of the current sensing resistor R3 is connected to the first end of the first negative phase resistor R15 and grounded. The second end of the current sensing resistor R3 is connected to the negative phase input terminal of the anti-spark comparator U3-A. The second end of the current sensing resistor R3 is also connected to the output terminal of the anti-spark comparator U3-A through the second negative phase resistor R16. The output terminal of the anti-spark comparator U3-A is connected to the anti-spark sampling terminal of the power transmission processor. The anti-spark output terminal of the power transmission processor is used to control the on / off state of the anti-spark control module. When a short circuit or overcurrent occurs in the passive connection detection module, the excessive current flowing through the power supply grounding wire of the electrical equipment increases the voltage difference across the current sensing resistor R3. This causes the positive comparison input voltage of the anti-spark comparator U3-A to be much greater than the negative comparison input voltage, resulting in a change in the voltage at the output terminal of the anti-spark comparator U3-A. For example, the voltage at the output terminal of the anti-spark comparator U3-A changes from a low level to a high level. The anti-spark sampling terminal of the power transmission processor detects this voltage change synchronously. By sampling this voltage change, a signal is output to control the on / off state of the anti-spark control module. Specifically, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, allowing the passive connection module to promptly disconnect the power output, preventing sparking and effectively improving the safety of the electrical equipment.

[0060] In one embodiment, this disclosure also relates to a smart furniture, including the circuit breaker described in the above embodiments. In this embodiment, the circuit breaker includes the anti-sparking power circuit breaker described in any of the above embodiments. The anti-sparking power circuit breaker includes an anti-sparking detection module and an anti-sparking control module. The power supply terminal of the anti-sparking detection module is used to connect to a reference power supply, and the sampling detection terminal of the anti-sparking detection module is used to connect to the power line of the electrical device to sample the short-circuit or overcurrent state of the electrical device. The input terminal of the anti-sparking control module is used to connect to the power line of the power supply device, and the output terminal of the anti-sparking control module is used to connect to the power line of the electrical device. The anti-sparking control module disconnects the power supply when the electrical device is in a short-circuit or overcurrent state. The anti-sparking detection module includes a power transmission processor, an anti-sparking comparator U3-A, a current sensing resistor R3, a positive phase resistor R14, a first negative phase resistor R15, and a second negative phase resistor R16. The first end of the current sensing resistor R3 is used for... The current sensing resistor R3 is connected to the power grounding wire of the electrical equipment. The first end of the current sensing resistor R3 is also connected to the first end of the positive phase resistor R14. The second end of the positive phase resistor R14 is connected to the positive phase input terminal of the anti-spark comparator U3-A. The second end of the current sensing resistor R3 is connected to the first end of the first negative phase resistor R15 and grounded. The second end of the current sensing resistor R3 is connected to the negative phase input terminal of the anti-spark comparator U3-A. The second end of the current sensing resistor R3 is also connected to the output terminal of the anti-spark comparator U3-A through the second negative phase resistor R16. The output terminal of the anti-spark comparator U3-A is connected to the anti-spark sampling terminal of the power transmission processor. The anti-spark output terminal of the power transmission processor is used to control the on / off state of the anti-spark control module. When a short circuit or overcurrent occurs in electrical equipment, the excessive current flowing through the power supply grounding wire increases the voltage difference across the current sensing resistor R3. This causes the positive comparison input voltage of the anti-spark comparator U3-A to be much greater than the negative comparison input voltage, resulting in a change in the voltage at the output of the anti-spark comparator U3-A. For example, the voltage at the output of the anti-spark comparator U3-A changes from a low level to a high level. The anti-spark sampling terminal of the power transmission processor detects this voltage change synchronously. By sampling this voltage change, a signal is output to control the on / off state of the anti-spark control module. Specifically, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, allowing the passively connected module to promptly disconnect the power output, preventing sparking and effectively improving the safety of the electrical equipment.

[0061] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A spark-proof power circuit breaker, characterized in that The application relates to a fireproof power supply circuit breaker. The fireproof power supply circuit breaker comprises a fireproof detection module and a fireproof control module. The fireproof detection module comprises a power supply transmission processor, a fireproof comparator, a current detection resistor, a positive-phase resistor, a first negative-phase resistor and a second negative-phase resistor.

2. The arc-resistant power circuit breaker of claim 1, wherein, The first end of the current detection resistor is connected with the power supply ground wire of the electric equipment.

3. The arc-resistant power circuit breaker of claim 2, wherein, The first end of the positive-phase resistor is connected with the first end of the current detection resistor.

4. The arc-resistant power circuit breaker of claim 3, wherein, The second end of the positive-phase resistor is connected with the positive-phase input end of the fireproof comparator.

5. The arc-resistant power circuit breaker of claim 3, wherein, The second end of the current detection resistor is connected with the first end of the first negative-phase resistor and grounded. The second end of the current detection resistor is connected with the negative-phase input end of the fireproof comparator. The second end of the current detection resistor is further connected with the output end of the fireproof comparator through the second negative-phase resistor. The output end of the fireproof comparator is connected with the fireproof sampling end of the power supply transmission processor. The fireproof output end of the power supply transmission processor is used for controlling the on-off of the fireproof control module. The fireproof power supply circuit breaker further comprises a passive on module. The passive on module comprises a first electronic switch tube, a second electronic switch tube, a first resistor, a second resistor and a first anti-inrush diode. The first end of the first electronic switch tube is connected with the power supply end of the power supply transmission processor. The second end of the first electronic switch tube is connected with the passive on detection end of the power supply transmission processor. The power supply end of the power supply transmission processor is connected with the second end of the second electronic switch tube. The first end of the first electronic switch tube is connected with the control end of the second electronic switch tube. The power supply end of the power supply transmission processor is further connected with the first end of the first resistor. The second end of the first resistor is respectively connected with the control end of the second electronic switch tube and the first end of the second resistor. The second end of the second resistor is respectively connected with the passive on detection end of the power supply transmission processor and the anode of the first anti-inrush diode. The cathode of the first anti-inrush diode is connected with the power supply wire of the electric equipment. The passive on module further comprises a third resistor. The control end of the first electronic switch tube is connected with the first end of the third resistor. The second end of the third resistor is grounded. The passive on module further comprises an energy storage capacitor. The first end of the energy storage capacitor is connected with the second end of the second electronic switch tube. The second end of the energy storage capacitor is connected with the control end of the first electronic switch tube.

6. The arc-resistant power circuit breaker of claim 3, wherein, The anti-arcing control module comprises a relay switch, a third electronic switch tube and a fourth resistor, an input end of the relay switch is used for being connected with a power line of a power supply device, an output end of the relay switch is connected with a negative electrode of the first anti-inrush diode; a turn-on and turn-off control end of the relay switch is connected with a first end of the third electronic switch tube, a second end of the third electronic switch tube is grounded, and a control end of the third electronic switch tube is connected with an anti-arcing control output end of the power supply transmission processor; a first end of the fourth resistor is connected with the anti-arcing control output end of the power supply transmission processor, and a second end of the fourth resistor is connected with the control end of the third electronic switch tube.

7. The arc-resistant power circuit breaker of claim 3, wherein, The passive turn-on module comprises a seventh resistor, an eighth resistor and a second anti-inrush diode, a power supply end of the power supply transmission processor is connected with a first end of the eighth resistor, a second end of the eighth resistor is connected with a positive electrode of the second anti-inrush diode, a first end of the seventh resistor is connected with a passive turn-on detection end of the power supply transmission processor, a second end of the seventh resistor is connected with the positive electrode of the second anti-inrush diode, and a negative electrode of the second anti-inrush diode is used for being connected with a power line of a power utilization device.

8. A power adapter, characterized by The anti-arcing power supply circuit breaker comprises the anti-arcing power supply circuit breaker according to any one of claims 1 to 7.

9. A battery pack, characterized by, The anti-arcing power supply circuit breaker comprises the anti-arcing power supply circuit breaker according to any one of claims 1 to 7.

10. An intelligent furniture, characterized by, The anti-arcing power supply circuit breaker comprises the anti-arcing power supply circuit breaker according to any one of claims 1 to 7.

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