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

Abstract

The invention 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] The present disclosure relates to the technical field of circuit breakers, and in particular to an anti-spark power circuit breaker, a power adapter, a battery pack, and intelligent furniture. Background Art

[0002] Circuit breakers are used to provide a series of characteristics required to ensure the normal operation of the power systems in which they are located and the loads connected thereto. For example, ensuring the rated current required by various users, allowing the correct connection or disconnection of loads in the circuit, protecting the load from abnormal events such as overload and short circuit by automatically disconnecting the circuit, allowing the protected circuit to be disconnected by electrically separating or opening appropriate contacts, and completely insulating the load from the power supply.

[0003] Currently, products are developing towards intelligence and practicality to provide customers with a good user experience. Intelligence and practicality require the cooperation of relevant circuits to be achieved. With this technological change, a by-product has emerged, which is the safety of the product. For example, short circuits / micro-short circuits / overcurrent problems may occur in the circuits of intelligent furniture, which may cause accidental sparking. Since most intelligent furniture uses a lot of flammable materials, this sparking may cause a fire, increasing the use safety risk. Summary of the Invention

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide an anti-spark power circuit breaker, a power adapter, a battery pack, and intelligent furniture that can effectively improve the use safety.

[0005] The purpose of the present disclosure is achieved through the following technical solutions:

[0006] An anti-spark power circuit breaker includes an anti-spark detection module and an anti-spark control module; the power supply terminal of the anti-spark detection module is used to connect to a reference power supply, and the sampling detection terminal of the anti-spark 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 anti-spark control module is used to connect to the power cord of the power supply device, the output terminal of the anti-spark control module is used to connect to the power cord of the electrical device, and the anti-spark control module is used to disconnect the power supply when the electrical device is in a short circuit or overcurrent state.

[0007] In one embodiment, the anti-spark detection module includes a power transmission processor, an anti-spark comparator, a current detection resistor, a positive-phase resistor, a first inverting resistor, and a second inverting resistor. The first end of the current detection resistor is used to connect to the power ground wire of the electrical device, and the first end of the current detection resistor is also connected to the first end of the positive-phase resistor. The second end of the positive-phase resistor is connected to the positive-phase input terminal of the anti-spark comparator. The second end of the current detection resistor is connected to the first end of the first inverting resistor and grounded, and the second end of the current detection resistor is connected to the inverting input terminal of the anti-spark comparator. The second end of the current detection resistor is also connected to the output terminal of the anti-spark comparator through the second inverting resistor. The output terminal of the anti-spark comparator is connected to the anti-spark sampling terminal of the power transmission processor, and the anti-spark output terminal of the power transmission processor is used to control the on / off of the anti-spark control module.

[0008] In one embodiment, the anti-spark power circuit breaker further includes a passive connection module. The passive connection module includes a first electronic switch tube, a second electronic switch tube, a first resistor, a second resistor, and a first anti-backflow diode. The first end of the first electronic switch tube is connected to the power supply terminal of the power transmission processor, and the second end of the first electronic switch tube is connected to the passive connection detection terminal of the power transmission processor. The power supply terminal of the power transmission processor is connected to the second end of the second electronic switch tube, and the first end of the second electronic switch tube is connected to the control terminal of the first electronic switch tube. The power supply terminal of the power transmission processor is also connected to the first end of the first resistor, and the second end of the first resistor is respectively connected to the control terminal of the second electronic switch tube and the first end of the second resistor. The second end of the second resistor is respectively connected to the passive connection detection terminal of the power transmission processor and the positive electrode of the first anti-backflow diode. The negative electrode of the first anti-backflow diode is used to connect to the power line of the electrical device. The anti-spark control module includes a relay switch and a third electronic switch tube. The input terminal of the relay switch is used to connect to the power line of the power supply device, and the output terminal of the relay switch is connected to the negative electrode of the first anti-backflow diode. The on / off control terminal of the relay switch is connected to the first end of the third electronic switch tube, the second end of the third electronic switch tube is grounded, and the control terminal of the third electronic switch tube is connected to the anti-spark control output terminal of the power transmission processor. Passive connection module Anti-spark control module

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

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

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

[0012] In one embodiment, the anti-spark control module further includes a fifth resistor. The control end of the third electronic switch tube is grounded through the fifth resistor.

[0013] In one embodiment, the passive connection module includes a seventh resistor, an eighth resistor, and a second anti-backflow diode. A first end of the seventh resistor is connected to a power supply end of the power transmission processor. The power supply end of the power transmission processor is connected to a first end of the eighth resistor. A second end of the eighth resistor is connected to a positive electrode of the second anti-backflow diode. A second end of the seventh resistor is connected to a passive connection detection end of the power transmission processor. The second end of the seventh resistor is also connected to the positive electrode of the second anti-backflow diode. A negative electrode of the second anti-backflow diode is used to be connected to a power cord of an electrical device.

[0014] A power adapter includes the anti-spark power circuit breaker according to any one of the above embodiments.

[0015] A battery pack includes the anti-spark power circuit breaker according to any one of the above embodiments.

[0016] An intelligent furniture includes the anti-spark power circuit breaker according to any one of the above embodiments.

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

[0018] When a short circuit or overcurrent occurs, the current passing through the power ground wire of the electrical equipment is too large, increasing the voltage difference across the current detection resistor. As a result, the positive-phase comparison input voltage of the anti-spark comparator is much greater than the negative-phase comparison input voltage, and the voltage at the output end of the anti-spark comparator changes. For example, at this time, the voltage at the output end of the anti-spark comparator changes from a low level to a high level. At this time, the voltage detected by the anti-spark sampling terminal of the power transmission processor changes synchronously. By sampling the voltage change, it is convenient to output a signal to control the on / off of the anti-spark control module. Specifically, at this time, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, so as to timely disconnect the power output, prevent sparking, and effectively improve the use safety of the electrical equipment. Passive connection module Passive connection module Passive connection module. Brief Description of the Drawings

[0019] To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0020] Figure 1 It is the circuit diagram of the anti-spark power circuit breaker in an embodiment;

[0021] Figure 2 is Figure 1 the circuit diagram of the main control part of the anti-spark detection module of the anti-spark power circuit breaker shown;

[0022] Figure 3 is Figure 1 the circuit diagram of the detection part of the anti-spark detection module of the anti-spark power circuit breaker shown;

[0023] Figure 4 is Figure 1 the circuit diagram of the passive connection module of the anti-spark power circuit breaker shown;

[0024] Figure 5 is Figure 1 the circuit diagram of the anti-spark control module of the anti-spark power circuit breaker shown;

[0025] Figure 6 It is the circuit diagram of the passive connection module in another embodiment;

[0026] Figure 7 It is the schematic diagram of the anti-spark power circuit breaker in an embodiment;

[0027] Figure 8 It is the schematic diagram of a power adapter in an embodiment;

[0028] Figure 9 It is a schematic diagram of a battery pack in an embodiment. Detailed implementation manners

[0029] To facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the understanding of the disclosure content of the present disclosure is more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure belongs. The terms used in the specification of the present disclosure herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] The present disclosure relates to an anti-spark power circuit breaker. In one embodiment, the anti-spark power circuit breaker includes an anti-spark detection module and an anti-spark control module; the power supply terminal of the anti-spark detection module is used to connect to a reference power supply, and the sampling detection terminal of the anti-spark detection module is used to connect to the power cord of an electrical device to sample the short-circuit or over-current state of the electrical device; the input terminal of the anti-spark control module is used to connect to the power cord of a power supply device, and the output terminal of the anti-spark control module is used to connect to the power cord of the electrical device, and the anti-spark control module is used to cut off the power supply when the electrical device is in a short-circuit or over-current state. The anti-spark detection module includes a power transmission processor, an anti-spark comparator, a current detection resistor, a positive-phase resistor, a first anti-phase resistor, and a second anti-phase resistor. The first end of the current detection resistor is used to connect to the power ground wire of the electrical device, and the first end of the current detection resistor is also connected to the first end of the positive-phase resistor. The second end of the positive-phase resistor is connected to the positive-phase input terminal of the anti-spark comparator. The second end of the current detection resistor is connected to the first end of the first anti-phase resistor and grounded, and the second end of the current detection resistor is connected to the anti-phase input terminal of the anti-spark comparator. The second end of the current detection resistor is also connected to the output terminal of the anti-spark comparator through the second anti-phase resistor. The output terminal of the anti-spark comparator is connected to the anti-spark sampling terminal of the power transmission processor, and the anti-spark output terminal of the power transmission processor is used to control the on / off of the anti-spark control module. When there is a short circuit or overcurrent, the current passing through the power ground wire of the electrical device is too large, causing the voltage difference across the current detection resistor to increase, so that the positive-phase comparison input voltage of the anti-spark comparator is much greater than the anti-phase comparison input voltage, and the voltage at the output terminal of the anti-spark comparator changes. For example, at this time, the voltage at the output terminal of the anti-spark comparator changes from a low level to a high level. At this time, the voltage detected by the anti-spark sampling terminal of the power transmission processor changes synchronously. By sampling the voltage change, it is convenient to output a signal for controlling the on / off of the anti-spark control module. Specifically, at this time, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, so that the passive connection module can timely cut off the power output, prevent sparking, and effectively improve the use safety of the electrical device.

[0033] Please refer to Figure 1 , which is the circuit diagram of the anti-spark power circuit breaker according to an embodiment of the present disclosure.

[0034] The anti-spark power circuit breaker 10 of an embodiment includes an anti-spark detection module 100 and an anti-spark control module 200. The power supply terminal of the anti-spark detection module is used to connect to a reference power supply. For example, the reference power supply is formed after the voltage of a power supply device is transformed, and its voltage is 3.3V. The sampling detection terminal of the anti-spark detection module is used to connect to the power line of an electrical device to sample the short-circuit or over-current state of the electrical device; the input terminal of the anti-spark control module is used to connect to the power line of the power supply device, and the output terminal of the anti-spark control module is used to connect to the power line of the electrical device. The anti-spark control module is used to cut off the power supply when the electrical device is in a short-circuit or over-current state. Please refer to Figure 2 and Figure 3 , the anti-spark detection module 100 includes a power transmission processor U4, an anti-spark comparator U3-A, a current detection resistor R3, a positive-phase resistor R14, a first inverting resistor R15, and a second inverting resistor R16. The first end of the current detection resistor R3 is used to connect to the power ground wire PGND of the electrical device, and the first end of the current detection 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 detection resistor R3 is connected to the first end of the first inverting resistor R15 and grounded. The second end of the current detection resistor R3 is connected to the inverting input terminal of the anti-spark comparator U3-A. The second end of the current detection 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 connection detection terminal of the power transmission processor. The anti-spark output terminal of the power transmission processor is used to control the on / off of the anti-spark control module 200.

[0035] When a short circuit or over-current occurs, the current passing through the power ground wire of the electrical device is too large, causing the voltage difference across the current detection resistor R3 to increase. As a result, the positive-phase comparison input voltage of the anti-spark comparator U3-A is much greater than the inverting-phase comparison input voltage, and the voltage at the output terminal of the anti-spark comparator U3-A changes. For example, at this time, the voltage at the output terminal of the anti-spark comparator U3-A changes from a low level to a high level. At this time, the voltage detected by the anti-spark sampling terminal of the power transmission processor changes synchronously. By sampling the voltage change, it is convenient to output a signal to control the on / off of the anti-spark control module. Specifically, at this time, the anti-spark output terminal PWR_ENB of the power transmission processor outputs a signal to disconnect the anti-spark control module, so as to timely cut off the power output, prevent sparking, and effectively improve the use safety of the electrical device.

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

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

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

[0039] When the electrical device is normally powered off, since the power cord VOUT_28V0 of the electrical device is connected to the main power supply circuit, that is, the power cord VOUT_28V0 of the electrical device is not powered, at this time the power cord of the electrical device is suspended, and the relay switch K1 of the power supply main circuit is open, making the first electronic switch tube Q3 conduct and the second electronic switch tube Q4 cut off. As a result, the power cord VOUT_28V0 of the electrical device is provided through the first electronic switch tube Q3 and the first anti-backflow 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 device from causing the passive connection module 300 to malfunction, providing a detection voltage for the subsequent electrical devices in the main circuit, making the voltage of the passive connection detection terminal KEY_DET of the power transmission processor U4 about 3.3V, that is, a high level.

[0040] When the electrical device starts to be normally powered on, the subsequent electrical devices in the main circuit need to be supplied with current by the passive connection module 300. For example, triggered by the power switch button of the electrical device, the current on the power cord VOUT_28V0 of the electrical device is very weak. At this time, the voltage drops across the first resistor R26 and the second resistor R27 are close to the 3.3V voltage of the power supply terminal VDD_3V3 of the power transmission processor U4, making the first electronic switch tube Q3 cut off and the second electronic switch tube Q4 conduct. That is, the power cord VOUT_28V0 of the electrical device is provided with a very weak current by the power supply terminal VDD_3V3 of the power transmission processor U4 through the BE junction of the second electronic switch tube Q4, the second resistor R27, and the first anti-backflow diode D5, which is not enough to support the power supply of the electrical devices in the main circuit. As a result, the power cord VOUT_28V0 of the electrical device is pulled down, and then the voltage of the passive connection detection terminal KEY_DET of the power transmission processor U4 is also pulled down. At this time, the passive connection detection terminal KEY_DET of the power transmission processor U4 is at a low level. In this way, the passive connection detection terminal KEY_DET of the power transmission processor U4 changes from a high level to a low level in voltage, which is convenient to conduct the third electronic switch tube Q1, thereby conducting the relay switch K1 to start supplying power to the electrical device. Among them, the key signal is transmitted to the power transmission processor U4 through the power cord of the electrical device. For example, the key current generated by the on / off key of the driving motor of the intelligent sofa is used to realize the power-on of the electrical device by triggering the key in the case of no power supply. Moreover, when the electrical device is normally powered, the first electronic switch tube Q3 still remains cut off, and the second electronic switch tube Q4 still remains conducting, making the third electronic switch tube Q1 remain conducting, thereby keeping the relay switch K1 conducting.

[0041] When a short circuit or overcurrent occurs in the electrical equipment, the voltage difference across the current detection resistor R3 increases. The output terminal of the anti-spark comparator U3-A outputs a signal to the anti-spark sampling terminal of the power transmission processor to determine that there is a short circuit or overcurrent in the electrical equipment. At this time, the anti-spark output terminal of the power transmission processor outputs a voltage to control the third electronic switch Q1 to turn off, so that the relay switch K1 is turned off in time, which is convenient for disconnecting the power output in time, preventing sparking, and effectively improving the use safety of the electrical equipment.

[0042] Among them, the input terminal and the output terminal of the relay switch K1 are both power lines, that is, the input terminal of the relay switch K1 is connected to the power line VIN_28V of the power supply device, and the output terminal of the relay switch K1 is connected to the power line VOUT_28V0 of the electrical equipment. The passive connection detection terminal KEY_DET of the power transmission processor U4 is connected to the power line VOUT_28V0 of the electrical equipment through the first anti-backflow 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 electrical equipment. The passive connection detection terminal KEY_DET of the power transmission processor U4 determines the current working state of the electrical equipment according to the on-off states of the first electronic switch Q3 and the second electronic switch Q4. For example, the passive connection of the electrical equipment.

[0043] In this way, by using the current change situation on the power line, the on-off states of the first electronic switch Q3 and the second electronic switch Q4 are controlled, which is convenient for the passive connection detection terminal KEY_DET of the power transmission processor U4 to obtain the working state of the electrical equipment, so that the power transmission processor U4 controls the on-off state of the third electronic switch Q1, thereby facilitating the adjustment of the on-off state of the relay switch K1. Moreover, the signal on the power line is converted into a signal for controlling the power on and off for transmission. That is, at this time, the power line simultaneously has the functions of power transmission and signal transmission, eliminating the need for a separate signal line, and the electrical equipment does not need to change the internal circuit.

[0044] In another embodiment, when there is power supply, the relay switch K1 gets voltage and starts to work, and the power switch remains in the off state, that is, the third electronic switch Q1 is off, and the subsequent circuit of the relay switch K1 does not get power supply and thus is in a safe state. When the customer needs to use the product to adjust the sofa footrest and the backrest angle, press the button on the hand controller of the sofa / bed. The button information is transmitted to the main control chip through the single-wire transmission of the power cord. For example, the power transmission processor U4. After the main control chip gets the data, it turns on the power switch to supply power to the subsequent product and drives the motor to complete the corresponding actions. When there are short circuit / micro short circuit and overcurrent phenomena in the subsequent circuit, the anti-spark detection module 100 transmits the detected signal to the main control chip, and the main control chip controls the power switch to turn off the power supply of the subsequent device, thus completing the safety protection. When the user does not use the external device, the main control chip will also turn off the power switch regularly, thus achieving the effect of double safety protection.

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

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

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

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

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

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

[0051] In one embodiment, please refer to Figure 5 , the anti-spark control module 200 further includes a fourth resistor R69. The first end of the fourth resistor R69 is connected to the anti-spark 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 end of the third electronic switch tube Q1. In this embodiment, the fourth resistor R69 is connected in series on the control end of the third electronic switch tube Q1. Specifically, the two ends of the fourth resistor R69 are respectively connected to the anti-spark control output terminal PWR_ENB of the power transmission processor U4 and the control end of the third electronic switch tube Q1. The fourth resistor R69 limits the current output by the anti-spark control output terminal PWR_ENB of the power transmission processor U4 to ensure the accurate on-off switching of the third electronic switch tube Q1, so as to improve the switching stability of the third electronic switch tube Q1.

[0052] In one embodiment, please refer to Figure 5, the anti-spark control module 200 further includes a fifth resistor R8, and the control end of the third electronic switch tube Q1 is grounded through the fifth resistor R8. In this embodiment, the fifth resistor R8 is connected in parallel between the control end and the second end of the third electronic switch tube Q1. Specifically, the first end of the fifth resistor R8 is connected to the control end of the third electronic switch tube Q1, and the second end of the fifth resistor R8 is connected to the second end of the third electronic switch tube Q1. The fifth resistor R8 and the fourth resistor R69 form a voltage dividing circuit, and the voltage on the fifth resistor R8 is used as the on-off voltage of the third electronic switch tube Q1. By adjusting the resistance ratio of the fifth resistor R8 and the fourth resistor R69, it is convenient to control the on-off of the third electronic switch tube Q1.

[0053] In one embodiment, please refer to Figure 5 , the anti-spark control module 200 further includes a sixth resistor R64. The first end of the sixth resistor R64 is connected to the on-off control end 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 tube Q1. In this embodiment, the sixth resistor R64 is connected in series on the first end of the third electronic switch tube Q1. Specifically, both ends of the sixth resistor R64 are respectively connected to the first end of the third electronic switch tube Q1 and the on-off control end of the relay switch K1. The sixth resistor R64 limits the current flowing through the third electronic switch tube Q1. Moreover, the sixth resistor R64 serves as a pull-up resistor for the first end of the third electronic switch tube Q1, which is convenient for providing a stable on-off current for the third electronic switch tube Q1, so as to facilitate the precise control of the on-off of the relay switch K1.

[0054] Further, please refer to Figure 5, the anti-spark control module 200 further includes a relay control diode D1. The first end of the sixth resistor R64 is respectively connected to the positive electrode of the relay control diode D1 and the first control end of the relay switch K1. The negative electrode of the relay control diode D1 is respectively connected to the second control end of the relay switch K1 and the power supply line VIN_28V of the power supply device. In this embodiment, the relay control diode D1 is connected in parallel to the control end of the relay switch K1. Specifically, the relay control diode D1 is connected in parallel to the magnetic induction coil in the relay switch K1. By controlling the on / off of the third electronic switch Q1, it is convenient to control the on / off of the relay switch K1, so that the relay switch K1 can cut off the power output in time when the external electrical equipment is short-circuited or over-current, 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 supply line from being reverse-fed 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 6, the passive connection module 300 includes a seventh resistor R5, an eighth resistor R4, and a second anti-backflow diode D2. The power supply terminal VDD_3V3 of the power transmission processor is connected to the first end of the eighth resistor R4. The second end of the eighth resistor R4 is connected to the positive electrode of the second anti-backflow diode D2. The first end of the seventh resistor R5 is connected to the passive connection detection terminal KEY_DET of the power transmission processor. The second end of the seventh resistor R5 is connected to the positive electrode of the second anti-backflow diode D2. The negative electrode of the second anti-backflow diode D2 is used to connect to the power line of the electrical device. In this embodiment, the seventh resistor R5 is located between the passive connection 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 connection detection terminal KEY_DET of the power transmission processor. When the electrical device is normally powered off, that is, when the power line VOUT_28V0 of the electrical device is not in use, the power line of the electrical device is suspended at this time, and the relay switch K1 in the main power supply circuit is disconnected. The power line VOUT_28V0 of the electrical device is provided through the eighth resistor R4 and the second anti-backflow diode D2, and the voltage is about 3.3V. The voltage of the detection terminal KEY_DET of the power transmission processor is also about 3.3V, making the passive connection detection terminal KEY_DET of the power transmission processor at a high level. When the electrical device starts to be powered on normally, the subsequent electrical devices in the main circuit need to be supplied with current by the passive connection module 300. The power supply terminal VDD_3V3 of the power transmission processor supplies current to the subsequent electrical devices through the eighth resistor R4 and the second anti-backflow diode D2. This current is not sufficient to support the power supply of the subsequent electrical devices in the main circuit, thereby pulling down the power line VOUT_28V0 of the electrical device. At this time, the detection terminal KEY_DET of the power transmission processor is also pulled down, completing the detection for the subsequent devices in the main circuit to use. Among them, the current on the power line VOUT_28V0 of the electrical device is very weak. At this time, the voltage drop across the seventh resistor R5 is close to the 3.3V voltage of the power supply terminal VDD_3V3 of the power transmission processor, making the voltage of the passive connection detection terminal KEY_DET of the power transmission processor change from a high level to a low level, facilitating the conduction of the anti-spark control module 200 through the power transmission processor. Specifically, the relay switch K1 is turned on to supply power to the electrical device.

[0056] In one embodiment, the anti-spark power circuit breaker is connected as an independent product between the power adapter and the electrical device. For details, see the appendix Figure 7 .

[0057] In one embodiment, the present disclosure also relates to a power adapter, including the circuit breaker described in the above embodiment. In this embodiment, the circuit breaker and the power part are encapsulated in the power adapter, that is, the circuit breaker is integrated in the power adapter. For details, see the appendixFigure 8 , the circuit breaker includes the anti-spark power circuit breaker described in any of the above embodiments. The anti-spark power circuit breaker includes an anti-spark detection module and an anti-spark control module. The power supply terminal of the anti-spark detection module is used to connect to a reference power supply, and the sampling detection terminal of the anti-spark detection module is used to connect to the power cord of the electrical equipment to sample the short-circuit or over-current state of the electrical equipment; the input terminal of the anti-spark control module is used to connect to the power cord of the power supply equipment, and the output terminal of the anti-spark control module is used to connect to the power cord of the electrical equipment. The anti-spark control module is used to cut off the power supply when the electrical equipment is in a short-circuit or over-current state; the anti-spark detection module includes a power transmission processor, an anti-spark comparator U3-A, a current detection resistor R3, a positive-phase resistor R14, a first anti-phase resistor R15, and a second anti-phase resistor R16. The first end of the current detection resistor R3 is used to connect to the power ground wire of the electrical equipment, and the first end of the current detection 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 detection resistor R3 is connected to the first end of the first anti-phase resistor R15 and grounded. The second end of the current detection resistor R3 is connected to the anti-phase input terminal of the anti-spark comparator U3-A. The second end of the current detection resistor R3 is also connected to the output terminal of the anti-spark comparator U3-A through the second anti-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 of the anti-spark control module. When a short circuit or over-current occurs, the current passing through the power ground wire of the electrical equipment is too large, causing the voltage difference across the current detection resistor R3 to increase, so that the positive-phase comparison input voltage of the anti-spark comparator U3-A is much greater than the anti-phase comparison input voltage. The voltage at the output terminal of the anti-spark comparator U3-A changes. For example, at this time, the voltage at the output terminal of the anti-spark comparator U3-A changes from a low level to a high level. At this time, the voltage detected by the anti-spark sampling terminal of the power transmission processor changes synchronously. By sampling the voltage change, it is convenient to output a signal to control the on / off of the anti-spark control module. Specifically, at this time, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, so as to timely cut off the power output and prevent sparking, effectively improving the use safety of the electrical equipment.

[0058] In another embodiment, a power adapter with the above anti-spark power circuit breaker is applied to the control system of a micro-switch for mobile devices. Only the power adapter needs to be replaced with the power supply in the control system, and no other changes are required for other parts.

[0059] In one embodiment, the present disclosure also relates to a battery pack, including the circuit breaker described in the above embodiment. In this embodiment, the circuit breaker is integrated in the battery pack. For details, see the appendix Figure 9 , the circuit breaker includes the anti-spark power circuit breaker described in any of the above embodiments. The anti-spark power circuit breaker includes an anti-spark detection module and an anti-spark control module. The power supply terminal of the anti-spark detection module is used to connect to a reference power supply, and the sampling detection terminal of the anti-spark detection module is used to connect to the power cord of the electrical device to sample the short-circuit or over-current state of the electrical device; the input terminal of the anti-spark control module is used to connect to the power cord of the power supply device, and the output terminal of the anti-spark control module is used to connect to the power cord of the electrical device. The anti-spark control module is used to cut off the power supply when the electrical device is in a short-circuit or over-current state; the anti-spark detection module includes a power transmission processor, an anti-spark comparator U3-A, a current detection resistor R3, a positive-phase resistor R14, a first anti-phase resistor R15, and a second anti-phase resistor R16. The first end of the current detection resistor R3 is used to connect to the power ground wire of the electrical device, and the first end of the current detection 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 detection resistor R3 is connected to the first end of the first anti-phase resistor R15 and grounded. The second end of the current detection resistor R3 is connected to the anti-phase input terminal of the anti-spark comparator U3-A. The second end of the current detection resistor R3 is also connected to the output terminal of the anti-spark comparator U3-A through the second anti-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 of the anti-spark control module. When there is a short circuit or overcurrent, the current passing through the power ground wire of the electrical device is too large, causing the voltage difference across the current detection resistor R3 to increase, so that the positive-phase comparison input voltage of the anti-spark comparator U3-A is much greater than the anti-phase comparison input voltage, and the voltage at the output terminal of the anti-spark comparator U3-A changes. For example, at this time, the voltage at the output terminal of the anti-spark comparator U3-A changes from a low level to a high level. At this time, the voltage detected by the anti-spark sampling terminal of the power transmission processor changes synchronously. By sampling the voltage change, it is convenient to output a signal for controlling the on / off of the anti-spark control module. Specifically, at this time, the anti-spark output terminal of the power transmission processor outputs a signal to disconnect the anti-spark control module, so that the passive connection module can timely disconnect the power output to prevent sparking and effectively improve the use safety of the electrical device.

[0060] In one of the embodiments, the present disclosure further relates to an intelligent furniture, including the circuit breaker described in the above embodiment. In this embodiment, the circuit breaker includes the arc-proof power circuit breaker described in any of the above embodiments. The arc-proof power circuit breaker includes an arc-proof detection module and an arc-proof control module. The power supply terminal of the arc-proof detection module is used to connect to a reference power supply, and the sampling detection terminal of the arc-proof detection module is used to connect to the power cord of the electrical equipment to sample the short-circuit or over-current state of the electrical equipment; the input terminal of the arc-proof control module is used to connect to the power cord of the power supply equipment, and the output terminal of the arc-proof control module is used to connect to the power cord of the electrical equipment. The arc-proof control module is used to cut off the power supply when the electrical equipment is in a short-circuit or over-current state; the arc-proof detection module includes a power transmission processor, an arc-proof comparator U3-A, a current detection resistor R3, a positive-phase resistor R14, a first anti-phase resistor R15, and a second anti-phase resistor R16. The first end of the current detection resistor R3 is used to connect to the power ground wire of the electrical equipment, and the first end of the current detection 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 arc-proof comparator U3-A. The second end of the current detection resistor R3 is connected to the first end of the first anti-phase resistor R15 and grounded. The second end of the current detection resistor R3 is connected to the anti-phase input terminal of the arc-proof comparator U3-A. The second end of the current detection resistor R3 is also connected to the output terminal of the arc-proof comparator U3-A through the second anti-phase resistor R16. The output terminal of the arc-proof comparator U3-A is connected to the arc-proof sampling terminal of the power transmission processor. The arc-proof output terminal of the power transmission processor is used to control the on / off of the arc-proof control module. When a short circuit or over-current occurs in the electrical equipment, the current passing through the power ground wire of the electrical equipment is too large, causing the voltage difference across the current detection resistor R3 to increase, so that the positive-phase comparison input voltage of the arc-proof comparator U3-A is much greater than the anti-phase comparison input voltage, and the voltage at the output terminal of the arc-proof comparator U3-A changes. For example, at this time, the voltage at the output terminal of the arc-proof comparator U3-A changes from a low level to a high level. At this time, the voltage detected by the arc-proof sampling terminal of the power transmission processor changes synchronously. By sampling the voltage change, it is convenient to output a signal for controlling the on / off of the arc-proof control module. Specifically, at this time, the arc-proof output terminal of the power transmission processor outputs a signal to disconnect the arc-proof control module, so that the passive connection module can timely disconnect the power output to prevent arcing, effectively improving the use safety of the electrical equipment.

[0061] The above-described embodiments merely represent several implementation manners of the present disclosure. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications and improvements can still be made, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be subject to the appended claims.

Claims

1. A spark-proof power circuit breaker, characterized in that: include: An anti-spark detection module, wherein the power supply end of the anti-spark detection module is used to connect to a reference power supply, and the sampling detection end of the anti-spark detection module is used to connect to a power line of an electrical device to sample a short circuit or overcurrent state of the electrical device; An anti-fire control module, wherein the input end of the anti-fire control module is used to connect to the power line of the power supply device, the output end of the anti-fire control module is used to connect to the power line of the power-consuming device, and the anti-fire control module is used to disconnect the power supply when the power-consuming device is in a short-circuit or overcurrent state.

2. The spark-proof power circuit breaker according to claim 1, characterized in that: The anti-spark detection module includes a power transmission processor, an anti-spark comparator, a current sensing resistor, a positive phase resistor, a first inverting resistor and a second inverting resistor. The first end of the current sensing resistor is used to connect to the power ground line of the electrical equipment. The first end of the current sensing resistor is also connected to the first end of the positive phase resistor. The second end of the positive phase resistor is connected to the positive input end of the anti-spark 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 end of the anti-spark comparator. The second end of the current sensing resistor is also connected to the output end of the anti-spark comparator through the second inverting resistor. The output end of the anti-spark comparator is connected to the anti-spark sampling end of the power transmission processor. The anti-spark output end of the power transmission processor is used to control the on and off of the anti-spark control module.

3. The anti-spark power circuit breaker according to claim 2, characterized in that: The anti-spark power circuit breaker also includes a passive connection module, which includes a first electronic switch tube, a second electronic switch tube, a first resistor, a second resistor and a first anti-flooding diode. The first end of the first electronic switch tube is connected to the power supply end of the power transmission processor, and the second end of the first electronic switch tube is connected to the passive connection detection end of the power transmission processor; the power supply end of the power transmission processor is connected to the second end of the second electronic switch tube, and the first end of the second electronic switch tube is connected to the control end of the first electronic switch tube; the power supply end of the power transmission processor is also connected to the first end of the first resistor, the second end of the first resistor is respectively connected to 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 to the passive connection detection end of the power transmission processor and the positive electrode of the first anti-flooding diode, and the negative electrode of the first anti-flooding diode is used to connect to the power line of the electrical equipment.

4. The spark-proof power circuit breaker according to claim 3, characterized in that: The passive connection module further includes a third resistor, the control end of the first electronic switch tube is connected to the first end of the third resistor, and the second end of the third resistor is grounded.

5. The spark-proof power circuit breaker according to claim 3, characterized in that: The passive connection module further includes an energy storage capacitor, a first end of the energy storage capacitor is connected to the second end of the second electronic switch tube, and a second end of the energy storage capacitor is connected to the control end of the first electronic switch tube.

6. The spark-proof power circuit breaker according to claim 3, characterized in that: The anti-spark control module includes a relay switch, a third electronic switch tube and a fourth resistor. The input end of the relay switch is used to connect to the power line of the power supply equipment, and the output end of the relay switch is connected to the negative electrode of the first anti-flooding diode; the on-off control end of the relay switch is connected to the first end of the third electronic switch tube, the second end of the third electronic switch tube is grounded, and the control end of the third electronic switch tube is connected to the anti-spark control output end of the power transmission processor; the first end of the fourth resistor is connected to the anti-spark control output end of the power transmission processor, and the second end of the fourth resistor is connected to the control end of the third electronic switch tube.

7. The spark-proof power circuit breaker according to claim 3, characterized in that: The passive connection module includes a seventh resistor, an eighth resistor and a second anti-flooding diode. The power supply end 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 positive electrode of the second anti-flooding diode, the first end of the seventh resistor is connected to the passive connection detection end of the power transmission processor, the second end of the seventh resistor is connected to the positive electrode of the second anti-flooding diode, and the cathode of the second anti-flooding diode is used to be connected to the power line of the electrical equipment.

8. A power adapter, characterized in that: It comprises the spark-proof power circuit breaker as claimed in any one of claims 1 to 7.

9. A battery pack, characterized in that: It comprises the spark-proof power circuit breaker as claimed in any one of claims 1 to 7.

10. A smart furniture, characterized in that: It comprises the spark-proof power circuit breaker as claimed in any one of claims 1 to 7.

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