Mobile lighting equipment

Abstract

The utility model provides a mobile lighting device which comprises a tail cover part, a battery, a cylinder body and a head part, the tail cover part comprises a first charging interface, a second charging interface and a tail circuit, the first charging interface is electrically connected with the tail circuit, and the second charging interface is electrically connected with the tail circuit; the head part comprises a voltage stabilizing circuit, a first charging loop, a second charging loop, a control circuit and a detection circuit, the first charging interface and the second charging interface are electrically connected with the input end of the voltage stabilizing circuit, the input end of the first charging loop is electrically connected with the output end of the voltage stabilizing circuit, and the output end of the first charging loop is electrically connected with the battery; the input end of the second charging loop is electrically connected with the output end of the voltage stabilizing circuit, the output end of the second charging loop is electrically connected with the battery, the control circuit is electrically connected with the first charging loop and the second charging loop, the input end of the detection circuit is electrically connected with the output end of the voltage stabilizing circuit, and the control end of the detection circuit is electrically connected with the control circuit.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting and relates to a mobile lighting device. Background Art

[0002] To facilitate charging, existing mobile lighting devices feature both a Type-C charging port and an MCC charging port on the rear cover. When charging, both the Type-C and MCC ports are connected to the power supply to charge the device. For both Type-C and MCC charging, the positive electrode must be connected to the same battery to connect to the control board in the head section.

[0003] Since the charging voltage of the MCC charging method is 4.2V and the charging voltage of the Type-C charging method is 5V, if the MCC charging port is connected to the power supply device first, the 4.2V voltage will directly form a charging circuit with the battery. At this time, if the Type-C is connected to the power supply device, the 5V voltage will be directly pulled down to the battery voltage. At this time, the control chip of the control motherboard cannot determine whether the Type-C is connected to the power supply device, causing the charging circuit of the MCC charging method to be always open, and the battery is directly charged to the overvoltage protection, resulting in battery damage and abnormal operation of the mobile lighting device. Utility Model Content

[0004] The purpose of the present utility model is to provide a mobile lighting device to address the deficiencies in the prior art, so as to improve the problem of abnormal operation of the mobile lighting device caused by battery damage due to simultaneous connection of the Type-C charging interface and the MCC charging interface to the power supply device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mobile lighting device comprises a tail cover, a battery, a barrel and a head, wherein the tail cover is arranged at one end of the barrel, the head is arranged at the other end of the barrel, and the battery is arranged in the barrel;

[0007] The tail cover portion includes a first charging interface, a second charging interface, and a tail circuit, wherein the first charging interface is electrically connected to the tail circuit, and the second charging interface is electrically connected to the tail circuit;

[0008] The head portion includes a voltage stabilizing circuit, a first charging circuit, a second charging circuit, a control circuit, and a detection circuit. The first charging interface is electrically connected to the input end of the voltage stabilizing circuit, the second charging interface is electrically connected to the input end of the voltage stabilizing circuit, the input end of the first charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the first charging circuit is electrically connected to the battery, the input end of the second charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the second charging circuit is electrically connected to the battery, the control circuit is electrically connected to the first charging circuit, the control circuit is electrically connected to the second charging circuit, the input end of the detection circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the detection circuit is grounded, and the control end of the detection circuit is electrically connected to the control circuit.

[0009] Furthermore, the control circuit includes a control chip;

[0010] The voltage stabilizing circuit includes a voltage stabilizing chip, and an input end of the voltage stabilizing chip is electrically connected to the first charging interface and the second charging interface;

[0011] The detection circuit includes a fourteenth resistor, a fifteenth resistor and an eleventh capacitor, one end of the fourteenth resistor is electrically connected to the output end of the voltage stabilizing chip, the other end of the fourteenth resistor is electrically connected to one end of the fifteenth resistor, and the other end of the fourteenth resistor is connected to the voltage detection end of the control chip, the other end of the fifteenth resistor is grounded, and the ends of the eleventh capacitor are connected to the fifteenth resistor.

[0012] Furthermore, the first charging circuit includes a tenth MOS transistor, a thirteenth MOS transistor, an eleventh triode, a twelfth triode, and a fourteenth triode. The input end of the tenth MOS transistor is electrically connected to the output end of the voltage regulator chip, the output end of the tenth MOS transistor is electrically connected to the input end of the thirteenth MOS transistor, the control end of the tenth MOS transistor is electrically connected to the input end of the eleventh triode, the output end of the eleventh triode is grounded, the control end of the eleventh triode is electrically connected to the first enable end of the control chip, the input end of the thirteenth MOS transistor is electrically connected to the input end of the twelfth triode, the output end of the thirteenth MOS transistor is grounded, and the control end of the thirteenth MOS transistor is connected in series with the output end of the thirteenth MOS transistor, the control end of the thirteenth MOS transistor is electrically connected to the output end of the fourteenth triode, the output end of the thirteenth MOS transistor is electrically connected to the input end of the fourteenth triode, and the control end of the fourteenth triode is electrically connected to the control end of the twelfth triode.

[0013] Furthermore, the second charging circuit includes a fifteenth MOS transistor, a sixteenth transistor and a charging management chip, the input end of the fifteenth MOS transistor is electrically connected to the output end of the voltage stabilizing chip, the output end of the fifteenth MOS transistor is electrically connected to the first input end of the charging management chip, the control end of the fifteenth MOS transistor is electrically connected to the input end of the sixteenth transistor, the output end of the sixteenth transistor is grounded, the control end of the sixteenth transistor is electrically connected to the second enable end of the control chip, the first output end of the charging management chip is electrically connected to the battery, and the second input end of the charging management chip is electrically connected to the second detection end of the control chip.

[0014] Furthermore, the output end of the voltage stabilizing chip is also connected to a fourth diode, and the other end of the fourth diode is electrically connected to the first charging circuit.

[0015] Furthermore, the model of the control chip is HC32L130J8TA.

[0016] Furthermore, the model of the voltage stabilizing chip is XC6206.

[0017] Furthermore, the model of the charging management chip is SLM6610.

[0018] Beneficial effects of the utility model:

[0019] The head portion is configured to include a voltage stabilizing circuit, a first charging circuit, a second charging circuit, a control circuit, and a detection circuit. The first charging interface is electrically connected to the input end of the voltage stabilizing circuit, the second charging interface is electrically connected to the input end of the voltage stabilizing circuit, the input end of the first charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the first charging circuit is electrically connected to the battery, the input end of the second charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the second charging circuit is electrically connected to the battery, the control circuit is electrically connected to the first charging circuit, the control circuit is electrically connected to the second charging circuit, the input end of the detection circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the detection circuit is grounded, and the control end of the detection circuit is electrically connected to the control circuit. When the Type-C charging interface and the MCC charging interface are simultaneously connected to the power supply device, the mobile lighting device can preferentially use the Type-C charging circuit for charging, thereby avoiding battery damage caused by overcurrent and overvoltage charging, which may cause abnormal operation of the mobile lighting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the circuit of the header portion of this application;

[0021] Figure 2 yes Figure 1 A schematic diagram of the control circuit of the head portion shown;

[0022] Figure 3 It is a schematic diagram of the circuit of the tail part of this application. DETAILED DESCRIPTION

[0023] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0026] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] Since the charging voltage of the MCC charging method is 4.2V and the charging voltage of the Type-C charging method is 5V, if the MCC charging port is connected to the power supply device first, the 4.2V voltage will directly form a charging circuit with the battery. At this time, if the Type-C is connected to the power supply device, the 5V voltage will be directly pulled down to the battery voltage. At this time, the control chip of the control motherboard cannot determine whether the Type-C is connected to the power supply device, causing the charging circuit of the MCC charging method to be always open, and the battery is directly charged to the overvoltage protection, resulting in battery damage and abnormal operation of the mobile lighting device.

[0028] The embodiment of the present application provides a mobile lighting device, including a tail cover part, a battery, a barrel J2 and a head part, wherein the tail cover part is arranged at one end of the barrel J2, the head part is arranged at the other end of the barrel J2, and the battery is arranged in the barrel J2; the tail cover part includes a first charging interface J3, a second charging interface J1 and a tail circuit, the first charging interface J3 is electrically connected to the tail circuit, and the second charging interface J1 is electrically connected to the tail circuit; the head part includes a voltage stabilizing circuit, a first charging circuit, a second charging circuit, a control circuit and a detection circuit, the first charging interface J3 is electrically connected to the voltage stabilizing circuit, and the second charging circuit is electrically connected to the tail circuit. The input end of the circuit is electrically connected to the first charging interface J1, the second charging interface J2 is electrically connected to the input end of the voltage stabilizing circuit, the input end of the first charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the first charging circuit is electrically connected to the battery, the input end of the second charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the second charging circuit is electrically connected to the battery, the control circuit is electrically connected to the first charging circuit, the control circuit is electrically connected to the second charging circuit, the input end of the detection circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the detection circuit is grounded, and the control end of the detection circuit is electrically connected to the control circuit.

[0029] In this embodiment, the first charging interface J3 is an MCC charging interface.

[0030] In this embodiment, the second charging interface J1 is a Type-C charging interface.

[0031] The head portion is provided with a voltage stabilizing circuit, a first charging circuit, a second charging circuit, a control circuit, and a detection circuit. The first charging interface J3 is electrically connected to the input end of the voltage stabilizing circuit, the second charging interface J1 is electrically connected to the input end of the voltage stabilizing circuit, the input end of the first charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the first charging circuit is electrically connected to the battery, the input end of the second charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the second charging circuit is electrically connected to the battery, the control circuit is electrically connected to the first charging circuit, the control circuit is electrically connected to the second charging circuit, the input end of the detection circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the detection circuit is grounded, and the control end of the detection circuit is electrically connected to the control circuit. When the Type-C charging interface and the MCC charging interface are connected to the power supply device at the same time, the mobile lighting device can preferentially use the Type-C charging circuit for charging, thereby avoiding battery damage caused by overcurrent and overvoltage charging, which may cause abnormal operation of the mobile lighting device.

[0032] In this embodiment, the control circuit includes a control chip U1; the voltage stabilizing circuit includes a voltage stabilizing chip U2, and the input end of the voltage stabilizing chip U2 is electrically connected to the first charging interface J3 and the second charging interface J1; the detection circuit includes a fourteenth resistor R14, a fifteenth resistor R15 and an eleventh capacitor, one end of the fourteenth resistor R14 is electrically connected to the output end of the voltage stabilizing chip U2, the other end of the fourteenth resistor R14 is electrically connected to one end of the fifteenth resistor R15, and the other end of the fourteenth resistor R14 is connected to the voltage detection end of the control chip U1, the other end of the fifteenth resistor R15 is grounded, and the ends of the eleventh capacitor are connected to the fifteenth resistor R15.

[0033] In this embodiment, the voltage stabilizing circuit further includes a ninth capacitor C9 and a tenth capacitor C10, one end of the ninth capacitor C9 is electrically connected to the input end of the voltage stabilizing chip U2, and the other end of the ninth capacitor C9 is grounded, one end of the tenth capacitor C10 is electrically connected to the output end of the voltage stabilizing chip U2, and the other end of the tenth capacitor C10 is grounded.

[0034] In this embodiment, the tail portion further includes a second diode D2 , one end of the second diode D2 is electrically connected to the first charging interface J3 , and the other end of the second diode D2 is electrically connected to the input end of the voltage regulator chip U2 .

[0035] In this embodiment, the tail portion further includes a third diode D3 , one end of the third diode D3 is electrically connected to the positive electrode of the battery, and the other end of the third diode D3 is electrically connected to the input end of the voltage regulator chip U2 .

[0036] In this embodiment, the output end of the voltage stabilizing chip U2 is further connected to a fourth diode D4 , and the other end of the fourth diode D4 is electrically connected to the first charging circuit.

[0037] In this embodiment, the model of the control chip U1 is HC32L130J8TA.

[0038] In this embodiment, the model of the voltage stabilizing chip U2 is XC6206.

[0039] In this embodiment, the first charging circuit includes a tenth MOS transistor Q10, a thirteenth MOS transistor Q13, an eleventh transistor Q11, a twelfth transistor Q12, and a fourteenth transistor Q14. The input end of the tenth MOS transistor Q10 is electrically connected to the output end of the voltage regulator chip U2, the output end of the tenth MOS transistor Q10 is electrically connected to the input end of the thirteenth MOS transistor Q13, the control end of the tenth MOS transistor Q10 is electrically connected to the input end of the eleventh transistor Q11, the output end of the eleventh transistor Q11 is grounded, and the control end of the eleventh transistor Q11 is electrically connected to the control chip U2. The first enable terminal PB14 of U1 is electrically connected, the input terminal of the thirteenth MOS transistor Q13 is electrically connected to the input terminal of the twelfth transistor Q12, the output terminal of the thirteenth MOS transistor Q13 is grounded, and the control terminal of the thirteenth MOS transistor Q13 is connected in series with the output terminal of the thirteenth MOS transistor Q13, the control terminal of the thirteenth MOS transistor Q13 is electrically connected to the output terminal of the fourteenth transistor Q14, the output terminal of the thirteenth MOS transistor Q13 is electrically connected to the input terminal of the fourteenth transistor Q14, and the control terminal of the fourteenth transistor Q14 is electrically connected to the control terminal of the twelfth transistor Q12.

[0040] In this embodiment, the first charging circuit further includes a seventeenth resistor R17, an eighteenth resistor R18, a twelfth capacitor, a sixteenth resistor R16, a nineteenth resistor R19, and a twentieth resistor R20. One end of the seventeenth resistor R17 is electrically connected to the input end of the tenth MOS transistor Q10, the other end of the seventeenth resistor R17 is electrically connected to one end of the twelfth capacitor C12, the other end of the twelfth capacitor C12 is electrically connected to the base of the eleventh transistor Q11, and one end of the eighteenth resistor R18 is electrically connected to the base of the tenth MOS transistor Q10. The input end is electrically connected, the other end of the eighteenth resistor R18 is electrically connected to the control end of the tenth MOS transistor, one end of the sixteenth resistor R16 is connected to the base of the eleventh transistor Q11, and the other end of the sixteenth resistor R16 is connected to the first enable terminal PB14 of the control chip U1, one end of the nineteenth resistor R19 is electrically connected to the input end of the twelfth transistor Q12, and the other end of the nineteenth resistor R19 is grounded, one end of the twentieth resistor R20 is electrically connected to the input end of the fourteenth transistor Q14, and the other end of the twentieth resistor R20 is grounded.

[0041] In this embodiment, the second charging circuit includes a fifteenth MOS transistor Q15, a sixteenth transistor Q16, and a charging management chip U3. The input end of the fifteenth MOS transistor Q15 is electrically connected to the output end of the voltage regulator chip U2, the output end of the fifteenth MOS transistor Q15 is electrically connected to the first input end VCC of the charging management chip U3, the control end of the fifteenth MOS transistor Q15 is electrically connected to the input end of the sixteenth transistor Q16, the output end of the sixteenth transistor Q16 is grounded, the control end of the sixteenth transistor Q16 is electrically connected to the second enable end PB15 of the control chip U1, the first output end LX of the charging management chip U3 is electrically connected to the battery BAT1, and the second input end NCHRG of the charging management chip U3 is electrically connected to the second detection end PB12 of the control chip U1.

[0042] In this embodiment, the model of the charging management chip U3 is SLM6610.

[0043] In this embodiment, the second charging circuit further includes a twenty-first resistor R21, a thirteenth capacitor C13, a twenty-third resistor R23, a fourteenth capacitor C14, a fifteenth capacitor C15, a twenty-fourth resistor R24, and a first inductor. One end of the twenty-first resistor R21 is electrically connected to the input end of the fifteenth MOS transistor Q15, the other end of the twenty-first resistor R21 is electrically connected to the control end of the fifteenth MOS transistor Q15, the thirteenth capacitor C13 is connected to both ends of the twenty-first resistor R21, and a first end of the fourteenth capacitor C14 is electrically connected to the input end of the fifteenth MOS transistor Q15. The output end of the fifteenth MOS transistor Q15 is electrically connected, the second end of the fourteenth capacitor C14 is grounded, the fifteenth capacitor C15 is connected to both ends of the fourteenth capacitor C14, one end of the twenty-fourth resistor R24 ​​is electrically connected to the second input terminal NCHRG of the charging management chip U3, the other end of the twenty-fourth resistor R24 ​​is electrically connected to the second detection terminal PB12 of the control chip U1, one end of the first inductor L1 is electrically connected to the voltage output terminal LX of the charging management chip U3, and the other end of the first inductor L1 is electrically connected to the positive electrode B+ of the battery BAT.

[0044] In this embodiment, the tail circuit includes a first MOS transistor Q1, a fourth MOS transistor Q4, a sixth MOS transistor Q6, a seventh MOS transistor Q7, a ninth MOS transistor Q9, a second transistor Q2, a third transistor Q3, a fifth transistor Q5, and an eighth transistor Q8. A first end of the first MOS transistor Q1 is electrically connected to the collector of the second transistor Q2, a second end of the first MOS transistor Q1 is electrically connected to the second charging interface J1, a third end of the first MOS transistor Q1 is electrically connected to the third end of the fourth MOS transistor Q4, an emitter of the second transistor Q2 is grounded, a base of the second transistor Q2 is connected to the anode connection terminal of the first diode D1, and a cathode connection terminal of the first diode D1 is electrically connected to the second charging interface J1. The base of the second transistor Q2 is also connected to the first capacitor C1, and the other end of the first capacitor C1 is grounded. A first end of the fourth MOS transistor Q4 is electrically connected to the collector of the fifth transistor Q5, a second end of the fourth MOS transistor Q4 is electrically connected to the second end of the sixth MOS transistor Q6, and a collector of the third transistor Q3 is connected to the sixth resistor. R6 is connected to ground, the emitter of the third transistor Q3 is connected to the third end of the fourth MOS transistor Q4, the base of the third transistor Q3 is connected to the base of the fifth transistor Q5, the collector of the fifth transistor Q5 is connected to the seventh resistor R7 and then to ground, the emitter of the fifth transistor Q5 is connected to the second end of the fourth MOS transistor, the first end of the sixth MOS transistor is connected to the eighth resistor R8 and then electrically connected to the base of the eighth transistor Q8, the third end of the sixth MOS transistor is connected to the ninth resistor R9 and then electrically connected to the collector of the eighth transistor Q8, the emitter of the eighth transistor Q8 is grounded, the first end of the seventh MOS transistor Q7 is connected to the collector of the eighth transistor Q8, the third end of the seventh MOS transistor Q7 is connected to the first charging port J3, the second end of the seventh MOS transistor Q7 is electrically connected to the second end of the ninth MOS transistor, the first end of the ninth MOS transistor Q9 is electrically connected to the first end of the seventh MOS transistor, the third end of the ninth MOS transistor Q9 is grounded, and the control end of the ninth MOS transistor Q9 is also connected to one end of the fifth capacitor C5, and the other end of the fifth capacitor C5 is grounded.

[0045] Working principle:

[0046] In the initial uncharging state, the voltage from battery BAT1 flows through the second diode D3, the ninth capacitor C9, the voltage regulator chip U2, and the tenth capacitor C10 to output a stable 2.8V voltage, which powers the control chip U1. Simultaneously, the fourth diode D4 delivers a stable voltage of approximately 2.6V to CH+. The fourteenth and fifteenth resistors R14 and R15 divide the voltage, resulting in a voltage of 0.6V at the AD_CH+ terminal. The detection terminal PAOO of the control chip U1 detects a voltage of 0.6V, indicating that neither the MCC charging port J3 nor the Type-C charging port J1 is connected to a charger. Since the voltage on CH+ is 2.6V, the fifth transistor Q5Veb > the third transistor Q3Veb, causing the fifth transistor Q5 to conduct and the fourth MOS transistor Q4Vsg to equal 0. The fourth MOS transistor Q4 is off, thus preventing the voltage on CH+ from flowing back to the Type-C port. The VBUS voltage is 0, the Vbe of the eighth transistor Q8 is 0, the eighth transistor Q8 is cut off, the Vgs voltage of the sixth MOS transistor Q6 is -2.6V, the sixth MOS transistor Q6 is turned on, and the fifth capacitor C5 is charged through the current-limiting resistor R9. As the voltage of the fifth capacitor C5 increases, the Vgs of the seventh MOS transistor Q7 and the ninth MOS transistor Q9 are greater than the turn-on voltage, and the seventh MOS transistor Q7 and the ninth MOS transistor Q9 are turned on by default. At this time, the voltage at the EN_MCC terminal is 0, and the voltage at the EN_TYPEC terminal is 0.

[0047] When the MCC charging interface J3 is powered by an external power supply, the voltage of CH+ is 4.2V, the voltage of MCC charging. At this time, AD_CH+=0.96V, the voltage of the detection terminal PA00 of the control chip U1 is greater than the default value and less than the 5V divided voltage 1.15V, then it is judged that the MCC charging interface J3 is connected to the charging. At this time, EN_MCC=1, the eleventh transistor Q11Vbe>0.7V is turned on, the tenth MOS tube Q10Vsg=-4.2V, the tenth MOS tube Q1 0 is turned on, the internal body diode of the thirteenth MOS tube Q13Vds is forward-conducted, so that the Veb of the twelfth transistor Q12> the Veb of the fourteenth transistor Q14, the twelfth transistor Q12 is turned on, the fourteenth transistor Q14 is cut off, the Vg potential of the thirteenth MOS tube Q13 is 0, the thirteenth MOS tube Q13 is fully turned on, and the positive electrode of the battery BAT1 is supplied. Since the seventh MOS tube Q7 and the ninth MOS tube Q9 are turned on by default, a charging circuit is formed to charge the battery BAT1.

[0048] When the mobile lighting device is charging in MCC mode, if the Type-C charging port is also connected to an external power supply, the VBUS voltage is 5V, the eighth transistor Q8Vb>0.7, the eighth transistor Q8 is turned on, Vce=0, the fifth capacitor C5 is instantly discharged, the seventh MOS transistor Q7 and the ninth MOS transistor Q9 have Vgs=0, and are not conducting, and the MCC charging circuit is open. At the same time, the first capacitor C1 is charged through the third resistor R3, and the second transistor Q2 does not turn on immediately. It takes about 1s for the CH+ voltage to recover to 2.6V, and AD_CH+=0.6V. The control chip U1 detects the uncharged voltage state, turns off the tenth MOS transistor Q10, and cuts off the MCC charging circuit. When the first capacitor C1 is charged to 0.7V, the second transistor Q2 is turned on, Vce = 0V, Vsg of the first MOS transistor Q1 = -5V, the first MOS transistor Q1 is turned on, and the internal body diode of the fourteenth transistor Q14Vds is forward-conducted, so that the third transistor Q3Veb> the fifth transistor Q5Veb, the third transistor Q3 is turned on, the fifth transistor Q5 is cut off, the Vg potential of the thirteenth MOS transistor Q13 is 0, the thirteenth MOS transistor Q13 is fully turned on, and the CH+ voltage is 5V. The voltage of AD_CH+ detected by the detection terminal PA00 of the control chip U1 is 1.15V, which indicates that the Type-C charging interface is connected for charging. At this time, EN_TYPEC=1, the sixteenth transistor Q16Vbe>0.7V is turned on; Vce=0V, the fifteenth MOS tube Q15 Vs=-4.9V is turned on, and 5.0V is output through the charging management chip U3 to the positive electrode of the battery BAT1, and then to GND, thus forming a charging circuit to charge the battery BAT1.

[0049] When the Type-C charging port and the MCC charging port J1 are connected to external power supply equipment at the same time, the Type-C circuit is connected and the MCC circuit is cut off. At this time, if the Type-C is disconnected from the external power supply device, the VBUS voltage is 0V, the first capacitor C1 is rapidly discharged through the first diode D1, the second transistor Q2 is turned off when Vbe < 0.7V, and the first MOS Q1 is turned off when Vsg = 0; the dot transistor Q8 is turned off, the sixth MOS Q6 is turned on, and CH+ charges the fifth capacitor C5 through the sixth MOS Q6 and the ninth resistor R9. During this process, the seventh MOS Q7 and the seventh and ninth MOS Q9 will not turn on immediately, and it takes ≈0.5s to wait. At this time, the CH+ voltage returns to 2.6V, AD_CH+ = 0.6V, and the control chip U1 detects the uncharged voltage state and turns off the fifteenth MOS Q15, thereby cutting off the Type-C charging circuit. The voltage of the fifth capacitor C5 increases to a point where the Vgs of the seventh and ninth MOS Q7 and Q9 are greater than the turn-on voltage. The seventh and ninth MOS Q9 are turned on. At this time, the CH+ voltage is 4.2V, the MMCC charging voltage, and the mobile lighting device switches back to the MCC charging method for charging.

[0050] The embodiment described above is only one of the more preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A mobile lighting device, characterized in that: It includes a tail cover part, a battery, a barrel and a head part, wherein the tail cover part is arranged at one end of the barrel, the head part is arranged at the other end of the barrel, and the battery is arranged in the barrel; The tail cover portion includes a first charging interface, a second charging interface, and a tail circuit, wherein the first charging interface is electrically connected to the tail circuit, and the second charging interface is electrically connected to the tail circuit; The head portion includes a voltage stabilizing circuit, a first charging circuit, a second charging circuit, a control circuit, and a detection circuit; the first charging interface is electrically connected to the input end of the voltage stabilizing circuit, the second charging interface is electrically connected to the input end of the voltage stabilizing circuit, the input end of the first charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the first charging circuit is electrically connected to the battery, the input end of the second charging circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the second charging circuit is electrically connected to the battery, the control circuit is electrically connected to the first charging circuit, the control circuit is electrically connected to the second charging circuit, the input end of the detection circuit is electrically connected to the output end of the voltage stabilizing circuit, the output end of the detection circuit is grounded, and the control end of the detection circuit is electrically connected to the control circuit; The control circuit includes a control chip; The voltage stabilizing circuit includes a voltage stabilizing chip, and an input end of the voltage stabilizing chip is electrically connected to the first charging interface and the second charging interface; The detection circuit includes a fourteenth resistor, a fifteenth resistor and an eleventh capacitor, one end of the fourteenth resistor is electrically connected to the output end of the voltage stabilizing chip, the other end of the fourteenth resistor is electrically connected to one end of the fifteenth resistor, and the other end of the fourteenth resistor is connected to the voltage detection end of the control chip, the other end of the fifteenth resistor is grounded, and the ends of the eleventh capacitor are connected to the fifteenth resistor.

2. The mobile lighting device according to claim 1, characterized in that The first charging circuit includes a tenth MOS transistor, a thirteenth MOS transistor, an eleventh triode, a twelfth triode, and a fourteenth triode. The input end of the tenth MOS transistor is electrically connected to the output end of the voltage regulator chip, the output end of the tenth MOS transistor is electrically connected to the input end of the thirteenth MOS transistor, the control end of the tenth MOS transistor is electrically connected to the input end of the eleventh triode, the output end of the eleventh triode is grounded, the control end of the eleventh triode is electrically connected to the first enable end of the control chip, the input end of the thirteenth MOS transistor is electrically connected to the input end of the twelfth triode, the output end of the thirteenth MOS transistor is grounded, and the control end of the thirteenth MOS transistor is connected in series with the output end of the thirteenth MOS transistor, the control end of the thirteenth MOS transistor is electrically connected to the output end of the fourteenth triode, the output end of the thirteenth MOS transistor is electrically connected to the input end of the fourteenth triode, and the control end of the fourteenth triode is electrically connected to the control end of the twelfth triode.

3. The mobile lighting device according to claim 1, characterized in that The second charging circuit includes a fifteenth MOS transistor, a sixteenth transistor and a charging management chip, the input end of the fifteenth MOS transistor is electrically connected to the output end of the voltage stabilizing chip, the output end of the fifteenth MOS transistor is electrically connected to the first input end of the charging management chip, the control end of the fifteenth MOS transistor is electrically connected to the input end of the sixteenth transistor, the output end of the sixteenth transistor is grounded, the control end of the sixteenth transistor is electrically connected to the second enable end of the control chip, the first output end of the charging management chip is electrically connected to the battery, and the second input end of the charging management chip is electrically connected to the second detection end of the control chip.

4. The mobile lighting device according to claim 1, characterized in that The output end of the voltage stabilizing chip is further connected to a fourth diode, and the other end of the fourth diode is electrically connected to the first charging circuit.

5. The mobile lighting device according to claim 1, characterized in that The model of the control chip is HC32L130J8TA.

6. The mobile lighting device according to claim 1, characterized in that The model of the voltage stabilizing chip is XC6206.

7. The mobile lighting device according to claim 3, characterized in that The model of the charging management chip is SLM6610.

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