CN216905378U - LED lamp and power module thereof - Google Patents

Abstract

The embodiment of the utility model provides an LED straight lamp and a power module thereof. The power supply module comprises a rectifying circuit, a filter circuit, an installation detection module and a driving circuit. The rectifying circuit is electrically connected to an external power supply and used for receiving an external power signal and rectifying the external power signal to generate a rectified signal. The filter circuit is electrically connected to the rectifying circuit and used for receiving and filtering the rectified signal to generate a filtered signal. The installation detection module is electrically connected to the rectifying circuit or the filter circuit and used for detecting the installation state of the lamp tube so as to reduce the risk of installation electric shock. The driving circuit is electrically connected to the filter circuit and used for receiving the filtered signal and performing power conversion to generate a driving signal to light the LED module. The driving circuit comprises a first driving unit and a second driving unit, and the two driving units are connected in parallel to improve the driving capability of the driving circuit and improve the stability of the system.

Description

LED lamp and power module thereof

Technical Field

The application relates to the field of LED lamp illumination, in particular to a power supply module of an LED lamp.

Background

With the improvement of living standard, the requirement of people on the lighting quality is higher and higher. The LED lamp gradually replaces the traditional incandescent lamp and fluorescent lamp due to the advantages of high luminous efficiency, long service life, environmental protection, energy conservation and the like.

Compared with the conventional fluorescent lamp, the LED lamp needs to be separately provided with a driving power supply to light the LED lamp, and the driving power supply can be arranged inside the LED lamp. In designing such an LED lamp with a built-in driving power supply, it is necessary to design an appropriate driving power supply in consideration of an internal space of the LED lamp.

Generally, when the internal space of the LED lamp is small, for example, the LED lamp can be a T5-LED straight lamp, and the driving power supply of the LED lamp adopts a bostt boosted power supply architecture. The drive power supply of the BOOST structure performs power conversion on the basis of commercial power, the converted drive voltage is higher, and more lamp beads are needed on the side of the LED lamp panel to meet the voltage requirement. And the BOSST boost structure cannot realize open circuit protection. When poor contact appears in LED lamp plate and drive power supply and causes drive power supply to open a way, burn drive power supply easily, cause serious consequence even.

When the drive power supply of the BOOST structure is started, a large starting current exists in the circuit, and other devices in the power supply need to be selected and used as devices capable of enduring large current, so that the cost of the LED lamp is increased.

Disclosure of Invention

The present application aims to solve the problems mentioned in the above background art by means of a power supply module.

The application provides a power module of LED straight tube lamp, its characterized in that includes: the rectifying circuit is electrically connected to an external power supply and used for receiving an external power signal and rectifying the external power signal to generate a rectified signal; the filter circuit is electrically connected to the rectifying circuit and used for receiving the rectified signal and filtering the signal to generate a filtered signal; a driving circuit electrically connected to the filter circuit for performing power conversion on the received filtered signal and generating a driving signal to light the LED module, wherein the driving circuit further comprises: a first driving unit and a second driving unit, the first driving unit and the second driving unit being connected in parallel; and an installation detection module coupled between the driving circuit and the external power supply for installation detection.

In an embodiment of the application, when the installation detection module detects that the LED straight lamp is abnormally installed, a power supply loop of the driving circuit is disconnected; the power supply loop is a current path for the external power supply to supply power to the driving circuit.

In an embodiment of the present application, the installation detection module is electrically connected to the filter circuit and the driving circuit.

In an embodiment of the present application, the installation detection module is electrically connected to the rectification circuit and the filter circuit.

In an embodiment of the present application, the installation detection module is electrically connected to the external power supply and the rectification circuit.

In an embodiment of the present application, the first driving unit is a BCUK type power conversion circuit, and the second driving unit is a BUCK type power conversion circuit.

In an embodiment of the present application, the first driving unit and the second driving unit share a driving control unit.

In an embodiment of the present application, the installation detection module includes: the current limiting circuit is electrically connected to a power supply loop between the external power supply and the driving circuit and used for limiting the current of the power supply loop; and the detection control circuit is electrically connected to the current limiting circuit and used for controlling the action of the current limiting circuit according to the current in the power supply loop.

In an embodiment of the application, the current limiting circuit comprises a switching device, wherein when the detection control circuit judges that the LED straight lamp is normally installed, the switching device is controlled to be turned on, and the LED straight lamp is normally lighted; and when the detection control circuit judges that the LED straight lamp is abnormally installed, the switching device is controlled to be switched off.

In an embodiment of the present application, the switching device is a field effect transistor.

In an embodiment of the application, when the LED straight lamp is powered on, the detection control circuit controls the current limiting circuit to be intermittently turned on for installation detection, and whether the LED straight lamp is normally installed is judged according to the current in the power supply loop at the installation detection stage.

In an embodiment of the application, in an installation detection stage, when a current in the power supply loop is greater than a set threshold, the detection control circuit judges that the LED straight lamp is normally installed; and when the current in the power supply loop is smaller than a set threshold value, the detection control circuit judges that the LED straight lamp is abnormally installed.

In an embodiment of the present application, during the installation detection phase, the current of the power supply loop is less than 5 MIU.

In an embodiment of the present application, the rectifier circuit is a full-bridge rectifier circuit.

In an embodiment of the present application, the filter circuit includes a first capacitor, a first pin of the first capacitor is electrically connected to a first output terminal of the rectifier circuit, and a second pin of the first capacitor is electrically connected to a second output terminal of the rectifier circuit.

In an embodiment of the present application, the filter circuit further includes a second capacitor and a first inductor, a first pin of the first inductor is electrically connected to the first output terminal of the rectifier circuit, a second pin of the first inductor is electrically connected to the first output terminal of the filter circuit, a first pin of the second capacitor is electrically connected to the first output terminal of the filter circuit, a second pin of the second capacitor is electrically connected to the second output terminal of the filter circuit, and a second output terminal of the rectifier circuit is electrically connected to the second output terminal of the filter circuit.

The application provides an LED lamp which is characterized by comprising any one of the power supply modules; and the LED module is electrically connected to the power supply module and used for receiving the driving signal and lightening.

Drawings

FIG. 1 is a schematic circuit block diagram of an LED lamp according to a first embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a rectifier circuit according to a first embodiment of the present invention;

FIG. 3A is a schematic circuit diagram of a filter circuit according to a first embodiment of the present invention;

FIG. 3B is a schematic circuit diagram of a filter circuit according to a second embodiment of the present invention;

fig. 4 is a schematic circuit diagram of an installation detection module according to a first embodiment of the present invention;

fig. 5A is a schematic circuit diagram of a driving circuit according to a first embodiment of the utility model;

fig. 5B is a circuit diagram of a driving circuit according to a second embodiment of the utility model;

fig. 5C is a schematic circuit diagram of a driving circuit according to a third embodiment of the utility model; and

fig. 5D is a circuit diagram of a driving circuit according to a fourth embodiment of the utility model.

Detailed Description

The present application provides a low power consumption power supply circuit to solve the problems mentioned in the background art. In order to make the technical solution achieve the above objects, features and advantages more comprehensible, specific embodiments of the technical solution provided are described in detail below with reference to the accompanying drawings. The following descriptions of the embodiments of the present invention are provided for illustration only and not for the purpose of representing all embodiments of the utility model or limiting the utility model to particular embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein without making any creative effort shall fall within the scope of the present disclosure.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

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

The single resistor in the circuit schematic diagram can be equivalently replaced by a plurality of resistors connected in series or in parallel in an actual circuit, and the utility model is not limited to the resistor. The capacitor can be equivalently replaced by a plurality of capacitors connected in series or in parallel.

Fig. 1 is a schematic circuit block diagram of an LED lamp according to a first embodiment of the utility model. The LED lamp 100 includes a rectifying circuit 110, a filter circuit 120, a mounting detection module 130, a driving circuit 140, and an LED module 150. The trimming circuit 110 is electrically connected to the external power source EP for receiving and rectifying the external power signal to generate a rectified signal. The filter circuit 120 is electrically connected to the rectifying circuit 110, and is configured to receive the rectified signal and perform filtering to generate a filtered signal. The installation detection module 130 is electrically connected to the filter circuit 120, and is configured to receive the filtered signal and perform safety detection, and when the lamp tube is abnormally installed, the installation detection module disconnects the power supply loop of the LED lamp to ensure safety. The driving circuit 140 is electrically connected to the installation detection module 130, and is configured to perform power conversion on the received power signal to generate a driving signal, so as to drive the LED module 150 to light up.

The external power signal is generally a commercial ac power or other high-voltage high-frequency signal, which cannot be used to directly light the LED module, and therefore needs to be processed to generate a driving signal capable of lighting the LED module. The trimming circuit 110, the filter circuit 120, the installation detection module 130, and the driving circuit 140 may be defined as a power module of the LED lamp in this embodiment. For receiving an external power signal and processing the external power signal to generate a driving signal for lighting the LED module 150.

In other embodiments, the installation detection module 130 may be disposed between the rectifier circuit 110 and the filter circuit 120, or between the rectifier circuit 110 and the external power source EP, without affecting the circuit characteristics thereof.

Fig. 2 is a schematic circuit diagram of a rectifier circuit according to a first embodiment of the present invention. The rectifier circuit 110 includes diodes 111, 112, 113, and 114. The external power source EP comprises two power input terminals for supplying power to the LED lamp, namely an external power input terminal a1 and an external power input terminal a 2. The diode 111 is electrically connected to the anode of the earphone hanger 114 and the output terminal 110b of the rectifying circuit, and the cathode thereof is electrically connected to the anode of the diode 112 and the external power input terminal a 1. An anode of the diode 112 is electrically connected to the rectifier circuit output terminal 110a and a cathode of the diode 113. The cathode of the diode 114 and the anode of the diode 113 are electrically connected to the external power input terminal a 2.

In this embodiment, the rectifier circuit 110 is a full-bridge rectifier circuit, when the external power signal is the commercial power ac, the output end of the rectifier circuit 110 outputs a dc signal through rectification by the rectifier circuit 110, and the level of the output end 110a of the rectifier circuit is always greater than or equal to the level of the output end 110b of the rectifier circuit. The working principle is as follows: when the external power signal is in the positive half cycle of the alternating current, the level of the external power input end A1 is higher than the level of A2, the external power signal flows in through the external power input end A1, the earphone hanger 112 and the output end 110a of the rectifying circuit and flows out through the rectifying current output end 110b, the diode 114 and the external power input end A2, and at the moment, the level of the output end 110a of the rectifying circuit is always greater than or equal to the level of the output end 110b of the rectifying circuit; when the external power signal is at the negative half cycle of the alternating current, the level of the external power input end a2 is higher than the level of a1, the external power signal flows in through the external power input end a2, the diode 113 and the rectifier circuit output end 110a, and flows out through the rectifier circuit output end 110b, the diode 111 and the external power input end a1, and at this time, the level of the rectifier circuit output end 110a is always equal to or higher than the level of the rectifier circuit output end 110 b. That is, the power signal output from the output terminal of the rectifier circuit 110 is always a dc signal regardless of whether the external power signal is ac or dc.

In other embodiments, the rectifier circuit may also use other forms of rectifier circuits, and the utility model is not limited thereto.

Fig. 3A is a schematic circuit diagram of a filter circuit according to a first embodiment of the utility model. The filter circuit 120 includes a capacitor 121. The capacitor 121 has one end electrically connected to the rectifier circuit output terminal 110a and the filter circuit output terminal 120a, and the other end electrically connected to the rectifier circuit output terminal 110b and the filter circuit output terminal 120 b. The filter circuit 120 is configured to receive the rectified signal output by the rectifying circuit 110 and filter the rectified signal to generate a filtered signal.

Fig. 3B is a schematic circuit diagram of a filter circuit according to a second embodiment of the utility model. The filter circuit 220 includes an inductor 221, and capacitors 222 and 223. The inductor 221 has one end electrically connected to the rectifying circuit output terminal 110a and the other end electrically connected to the filtering circuit output terminal 120 b. The capacitor 222 has one end electrically connected to the rectifier circuit output terminal 110a and the other end electrically connected to the rectifier circuit output terminal 110 b. The capacitor 223 has one end electrically connected to the filter circuit output end 120a and the other end electrically connected to the filter circuit output end 120 b. The rectifier circuit output 110b is electrically connected to the filter circuit output 120 b. In this embodiment, the filter circuit 220 is a pi-type filter circuit for receiving the rectified signal and filtering the rectified signal to generate a filtered signal.

In other embodiments, the filter circuit may also be other types of filter circuits, and the utility model is not limited thereto.

Fig. 4 is a schematic circuit diagram of an installation detection module according to a first embodiment of the present invention. The mounting detection module 130 includes a current limit circuit 131 and a detection control circuit 132. The current limiting circuit 131 has one end electrically connected to the output end 120 of the rectifying circuit, the other end electrically connected to the output end 130b of the installation detection module 120, and a control end electrically connected to the detection control circuit 132. The detection control circuit 132 is electrically connected to the output end 120a of the rectification circuit 120 and the output end 130a of the installation detection module. In this embodiment, the current limiting circuit 131 includes a switching device, when the LED lamp is powered on, the installation detection module 130 performs installation detection, when abnormal installation of the LED lamp is detected, for example, when a human body is connected, the detection control circuit 132 controls the switching device in the current limiting circuit 131 to be disconnected to disconnect the power supply loop of the LED lamp, the external power supply signal cannot supply power to the LED lamp, and the human body connected to the circuit does not have a large current (greater than 5MIU) flowing through, so as to ensure human safety.

In this embodiment, in the installation detection stage, the detection control circuit 132 controls the current limiting circuit 131 to be turned on intermittently to determine whether the LED lamp is installed normally. The conduction time of the current limiting circuit is shorter than 50us), even when the current limiting circuit is conducted, the current flowing through the human body meets the UL safety requirement and is less than 5 MIU.

The detection control circuit 132 judges whether there is a human body access circuit by the difference of the electrical signals in the circuit in the two states of human body access and human body non-access. Specifically, when a human body accesses the circuit, the detection current in the detection mode, that is, when the switch in the current limiting circuit 131 is turned on, the current flowing through the current limiting circuit is I1; when no human body is accessed, the detection current is I2. Because the human body has impedance, I1 < I2. Setting a current threshold value as I3, enabling I1 to be more than I3 and more than I2, judging that the LED lamp is normally installed when the detection current is more than I3, and controlling the switching device in the current limiting circuit 131 to be conducted by the detection control circuit 132 so as to enable the LED lamp to normally work; when the detection current is smaller than I3, the lamp tube is judged to be abnormally installed, and the detection control circuit 132 controls the switch device in the current limiting circuit 131 to be switched off so as to switch off the power supply loop and ensure the safety of human body.

Fig. 5A is a schematic circuit diagram of a driving circuit according to a first embodiment of the utility model. The driving circuit 140 includes a driving control unit 141, an inductor 142, a diode 143, a switching device 144, and a capacitor 145. The inductor 142 has one end electrically connected to the mounting detection module output terminal 130a and the other end electrically connected to the anode of the diode 143. The cathode of the diode 143 is electrically connected to the driving circuit output terminal 140 a. The first terminal of the switching device 144 is electrically connected to the anode of the diode 143, the second terminal thereof is electrically connected to the mounting detection module output terminal 120b and the driving circuit output terminal 140b, and the control terminal thereof is electrically connected to the driving control unit. The capacitor 145 has a first end electrically connected to the driving circuit output end 140a and a second end electrically connected to the driving circuit output end 140 b.

The operation of the driving circuit 140 is described next.

The driving control unit 141 determines the on and off time of the switching device 144 according to the current detection signal S146, that is, controls the Duty Cycle (Duty Cycle) of the switching device 144 to adjust the magnitude of the driving signal. The current detection signal S146 reflects the magnitude of the current flowing through the switching device 144, and the current detection signal S146 has a functional relationship with the driving signal, so that the magnitude of the driving signal can be known from the signal.

When the switching device 144 is closed, the current signal flows through a path formed by the installation detection module output end 130a, the switching device 144 and the installation detection module output end 130b, and at this time, the inductor 142 stores energy; when the switching device 144 is turned off, a current signal flows in through the mounting detection module output terminal 130a, the inductor 142, the diode 143, and the driving circuit output terminal 140a, and flows out through the driving circuit output terminal 140b and the mounting detection module output terminal 130b, and at the same time, the inductor 142 releases energy through a path formed by the diode 143, the driving circuit output terminal 140a, the LED module, the driving circuit output terminal 140b, and the mounting detection module output terminal 130b, and at this time, the capacitor 145 stores energy. The switch device 144 repeatedly opens and closes corresponding to the inductor 142 and the capacitor 145 to repeatedly store and release energy, and the magnitude of the current of the driving signal output by the driving circuit 140, that is, the magnitude of the current flowing through the LED module 150, can be controlled by controlling the ratio of the on-time and the off-time of the switch device 144. In this embodiment, the current of the driving signal is constant at a predetermined value.

In this embodiment, the driving power supply 140 is a BOOST type power supply structure, that is, the voltage of the output driving signal is greater than or equal to the input voltage thereof, when the external power signal is the alternating current of the commercial power, the voltage of the boosted driving signal is higher than the commercial power, generally 400V, or even higher, and when the voltage of the driving signal is higher, more lamp beads need to be used in the LED module to meet the voltage requirement of the driving signal. Since the driving circuit 140 of the present embodiment is a BOOST structure, short-circuit protection cannot be achieved. When the output terminals 140a and 104b of the specific single driving circuit 140 are short-circuited, the switching device 144 is bypassed, and the on and off states of the switching device 14 have no influence on the current short-circuit state, so that the driving circuit 140 cannot realize short-circuit protection.

In this embodiment, the driving circuit 140 is a BOOST structure, and the voltage of the driving output signal is higher, that is, the voltage at two ends of the capacitor 145 is higher, and the capacitor 145 needs to use a larger specification to meet the voltage requirement. When the LED lamp is powered on, the charging current of the capacitor 145 is larger, and in combination with the embodiment shown in fig. 4, the switching device 1311 in the charging current limiting circuit 131, so the switching device 1311 also needs to have a larger specification to meet the requirement. In this embodiment, the switching device 1311 is an MOS transistor, and the larger size MOS transistor has higher cost.

Fig. 5B is a schematic circuit diagram of a driving circuit according to a second embodiment of the present invention. The driving circuit 240 includes a driving control unit 241, an inductor 242, a diode 243, a switching device 244, and a capacitor 245. The switch device 244 has a first end electrically connected to the mounting detection module output end 130a, a second end electrically connected to the first end of the inductor 242, and a control end electrically connected to the driving control unit 241. The cathode of the diode 243 is electrically connected to the first end of the inductor 242, and the cathode thereof is electrically connected to the output terminal 130b of the mounting detection module 130 and the output terminal 140b of the driving circuit. The capacitor 245 has a first terminal electrically connected to the second terminal of the inductor 242, and a second terminal electrically connected to the anode of the diode 243.

The operation of the driving circuit 240 is described next.

The driving control unit 241 determines the on and off time of the switching device 244 according to the current detection signal S246, that is, controls the Duty Cycle (Duty Cycle) of the switching device 244 to adjust the magnitude of the driving signal. The current detection signal S246 reflects the magnitude of the current flowing through the diode 243, and the current detection signal S246 has a functional relationship with the driving signal, so that the magnitude of the driving signal can be known from the signal.

When the switching device 244 is closed, a current signal flows into the LED module through the switching device 244, the inductor 242, and the driving circuit output terminal 140a, and flows out through the driving circuit output terminal 140b and the mounting detection module output terminal 130 b. The inductor 242 and the capacitor 345 store energy at this time. When the switching device 244 is turned off, the inductor 242 and the capacitor 245 release the stored energy, the energy on the inductor 242 is released through the loop formed by the driving circuit output terminal 140a, the LED module 150, the driving circuit output terminal 140b and the diode 243, and the energy on the capacitor 245 is released through the loop formed by the driving circuit output terminal 140a, the LED module and the driving circuit output terminal 140 b. The switch device 244 repeatedly closes and opens corresponding to the repeated energy storage and release of the inductor 242 and the capacitor 245 to generate a driving signal to drive the LED module to light up. Controlling the ratio of the on and off times of the switching device 244 controls the magnitude of the drive signal. In this embodiment, the current of the driving signal is stabilized at a predetermined value.

In the present embodiment, the driving circuit 240 has a BUCK structure, i.e., the output voltage of the driving circuit 240 is less than or equal to the input voltage thereof. Compared to the embodiment shown in fig. 5A, the output voltage of the driving circuit 240 (i.e. the voltage of the driving signal) is smaller (typically 60-80V) in this embodiment, and a smaller number of beads can be used in the LED module. Meanwhile, the capacitor 245 may be of a smaller specification, and in combination with the embodiment shown in fig. 4, the corresponding switching device 1311 in the current limiting circuit 131 may be an MOS transistor of a smaller specification, which may greatly reduce the cost and increase the stability of the system.

Fig. 5C is a schematic circuit diagram of a driving circuit according to a third embodiment of the utility model. The driving circuit 340 is similar to the circuit structure of the driving circuit 240 in the embodiment shown in fig. 5B, but in this embodiment, the driving circuit 340 further includes an inductor 347, a diode 348, and a switching device 349. The driving circuit 340 includes two driving units, a first driving unit and a second driving unit. The first driving unit includes a driving control circuit 341, an inductor 342, a diode 343, a switching device 344, and a capacitor 345. The second driving unit includes a driving control unit 341, an inductor 347, a diode 348, a switching device 349, and a capacitor 345. S346 is the current sense signal at the anode of diode 343 and S3410 is the current sense signal at the anode of diode 348. The first drive unit is connected in parallel with the second drive unit. The first driving unit generates a first driving signal, and the second driving unit generates a second driving signal, wherein the driving signals comprise the first driving signal and the second driving signal. The first drive unit and the second drive unit operate independently. The operation principle of the first driving unit and the second driving unit is the same as that of the driving circuit 240 in the embodiment shown in fig. 5B, and is not described here again.

In this embodiment, the driving capability of the driving circuit 340 can be effectively increased by connecting the two driving units in parallel, so as to improve the power of the LED lamp. The first driving unit and the second driving unit are both BUCK architectures, the output voltage is lower (one is 60-80V), the capacitor 345 may adopt a capacitor with a smaller specification, when the LED lamp is started, the charging current of the capacitor 345 is smaller than that of the embodiment shown in fig. 5A, the charging current flows through the switching device 1311 of the current limiting circuit 131 in the safety detection module 130, and correspondingly, the switching device may adopt an MOS transistor with a smaller specification, which can effectively save the cost.

In this embodiment, when the LED lamp is a fluorescent lamp of T5 type, if the driving circuit 140 shown in fig. 5A is used, the power module is disposed at one end of the lamp tube, and the dark area of the LED lamp is relatively obvious. When the driving circuit 349 of the present embodiment is adopted, the power modules may be disposed at two ends of the lamp tube, that is, the first driving unit is disposed at one end of the lamp tube, and the second driving unit is disposed at the other end of the lamp tube. By the configuration, the dark areas of the lamp tube can be distributed at two ends of the lamp tube, so that the lamp tube looks more beautiful.

In this embodiment, the first driving unit and the second driving unit share one driving control circuit, that is, the driving control circuit 341 collects the current detection signal S346 to control the switching device 344 in the first driving unit, and the driving control circuit 341 collects the current detection signal S3410 to control the switching device 349 in the second driving unit. The two control adjustments operate independently.

Fig. 5D is a schematic circuit diagram of a driving circuit according to a fourth embodiment of the utility model. The driving circuit 440 of the present embodiment is similar to the driving circuit 2340 of the embodiment shown in fig. 5C, and it is needless to say that the driving circuit 440 further includes a driving control unit 4411 in the present embodiment. The driving control unit 441 is electrically connected to the switching device 449, and is configured to control the switching device 449 to turn on and off according to the current detection signal S4410 to generate a first driving signal. The driving control unit 4411 is electrically connected to the switching device 444, and is configured to control the switching device 444 to be turned on and off according to the current detection signal S446 to generate a second driving signal.

Claims (17)

1. A power module of an LED lamp is characterized by comprising:

the rectifying circuit is electrically connected to an external power supply and used for receiving an external power signal and rectifying the external power signal to generate a rectified signal;

the filter circuit is electrically connected to the rectifying circuit and used for receiving the rectified signal and filtering the signal to generate a filtered signal;

a driving circuit electrically connected to the filter circuit for performing power conversion on the received filtered signal and generating a driving signal to light the LED module, wherein the driving circuit further comprises: a first driving unit and a second driving unit, the first driving unit and the second driving unit being connected in parallel; and

and the installation detection module is coupled between the driving circuit and the external power supply to carry out installation detection.

2. The power supply module according to claim 1, wherein when the installation detection module detects that the LED straight lamp is abnormally installed, a power supply loop of the driving circuit is disconnected; the power supply loop is a current path for the external power supply to supply power to the driving circuit.

3. The power module of claim 2, wherein the installation detection module is electrically connected to the filter circuit and the driver circuit.

4. The power module of claim 2, wherein the installation detection module is electrically connected to the rectification circuit and the filter circuit.

5. The power supply module of claim 2, wherein the mounting detection module is electrically connected to the external power supply and the rectification circuit.

6. The power module as claimed in claim 2, wherein the first driving unit is a BCUK type power conversion circuit and the second driving unit is a BUCK type power conversion circuit.

7. The power supply module of claim 6, wherein the first drive unit and the second drive unit share a drive control unit.

8. The power module of claim 2, wherein the installation detection module comprises:

the current limiting circuit is electrically connected to a power supply loop between the external power supply and the driving circuit and used for limiting the current of the power supply loop; and

and the detection control circuit is electrically connected to the current limiting circuit and used for controlling the action of the current limiting circuit according to the current in the power supply loop.

9. The power supply module as claimed in claim 8, wherein the current limiting circuit comprises a switching device, wherein when the detection control circuit determines that the LED straight lamp is normally installed, the switching device is controlled to be turned on, and the LED straight lamp is normally lit; and when the detection control circuit judges that the LED straight lamp is abnormally installed, the switching device is controlled to be switched off.

10. The power supply module of claim 9, wherein the switching device is a field effect transistor.

11. The power supply module as claimed in claim 8, wherein when the LED straight lamp is powered on, the detection control circuit controls the current limiting circuit to be intermittently turned on for installation detection, and whether the LED straight lamp is normally installed is determined according to the current magnitude in the power supply loop during the installation detection stage.

12. The power supply module of claim 11, wherein in the installation detection stage, when the current in the power supply loop is greater than a set threshold, the detection control circuit judges that the LED straight lamp is normally installed; and when the current in the power supply loop is smaller than a set threshold value, the detection control circuit judges that the LED straight lamp is abnormally installed.

13. The power supply module of claim 11 wherein the current of the power supply loop is less than 5MIU during an installation detection phase.

14. The power supply module of claim 2, wherein the rectifier circuit is a full bridge rectifier circuit.

15. The power supply module of claim 2, wherein the filter circuit comprises a first capacitor, a first pin of the first capacitor is electrically connected to a first output terminal of the rectifier circuit, and a second pin of the first capacitor is electrically connected to a second output terminal of the rectifier circuit.

16. The power module of claim 15, wherein the filter circuit further comprises a second capacitor and a first inductor, a first pin of the first inductor is electrically connected to the first output terminal of the rectifier circuit, a second pin of the first inductor is electrically connected to the first output terminal of the filter circuit, a first pin of the second capacitor is electrically connected to the first output terminal of the filter circuit, a second pin of the second capacitor is electrically connected to the second output terminal of the filter circuit, and a second output terminal of the rectifier circuit is electrically connected to the second output terminal of the filter circuit.

17. An LED lamp, comprising:

a power supply module as claimed in any one of claims 1 to 16; and

and the LED module is electrically connected to the power supply module and used for receiving the driving signal and lightening.

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