Driving power supply

Abstract

The utility model provides a driving power supply. The driving power supply comprises an access circuit, an output circuit and a control circuit, the access circuit, the output circuit and the control circuit are arranged on a circuit board and are arranged in a shell through the circuit board, and the circumcircle diameter of the cross section of the shell in the length direction is limited to be smaller than 35 mm, so that the driving power supply can be matched with a mounting hole with the aperture larger than or equal to 35 mm, and the driving power supply is connected with the circuit board through the circuit board. When the size of a mounting hole matched with a lamp driven by the driving power supply is larger than or equal to 35 mm, the driving power supply can be placed into the mounting hole from the mounting side of the lamp. The control circuit is provided with an antenna so that the control circuit can receive external signals after being powered on and control the output circuit according to instructions of the external signals, and therefore intelligent control over the lamp is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent dimming, in particular to a driving power supply. Background Art

[0002] The driving power supply can be understood as the power supply used to drive the lamp to work.

[0003] In the prior art, the intelligent driving power supply is built into the ceiling to provide driving for the lamp. However, in the prior art, the driving power supply is relatively large and cannot be adapted to a small-sized mounting hole.

[0004] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in the field of this technology. Utility Model Content

[0005] In view of the problem that the existing driving power supply is large in size and cannot adapt to small-sized mounting holes, one purpose of the utility model is to provide a driving power supply, wherein the outer shell size of the driving power supply is limited to within 35mm, so that the driving power supply can adapt to a minimum mounting hole of 35mm for intelligent driving of such small lamps.

[0006] When installing the lamp, the driver power supply can be directly inserted into the ceiling through the installation hole, without damaging the installation hole or disassembling the driver power supply structure itself, so as to achieve convenient hidden installation, which is conducive to the intelligent transformation of small-sized lamps.

[0007] Another object of the utility model is to provide a driving power supply, wherein in order to reduce the volume of the transformer, a primary auxiliary winding is arranged between the primary main winding and the secondary main winding, and the primary auxiliary winding serves as both a power supply winding and a shielding layer, so that there is no need to additionally arrange a shielding layer between the primary main winding and the secondary main winding, thereby reducing the volume of the transformer.

[0008] Another object of the utility model is to provide a driving power supply, wherein a whole layer of primary auxiliary winding is wound between the primary main winding and the secondary main winding, and one end is led out from the primary auxiliary winding and connected to the primary ground, so as to return the common-mode interference signal of the primary side of the transformer to the ground through the primary auxiliary winding, so as to improve the EMI problem caused by the common-mode signal being transmitted to the secondary through the interlayer capacitance between the primary and secondary.

[0009] Another object of the utility model is to provide a driving power supply, wherein the primary auxiliary winding of the transformer is densely wound or sparsely wound in a whole layer by a double-wire parallel winding method, so as to be evenly wound in a whole layer without occupying the additional depth of the skeleton slot.

[0010] Another object of the utility model is to provide a driving power supply, wherein the secondary auxiliary winding of the transformer and at least part of the secondary main winding are wound on the same layer so that the secondary auxiliary winding does not occupy additional layers, thereby reducing the volume of the transformer.

[0011] Another object of the utility model is to provide a driving power supply, wherein the number of layers of the secondary main winding is greater than 1, and the number of layers of the secondary auxiliary winding is less than 1, so that the extra part of the secondary main winding that is less than one layer shares one layer with the secondary auxiliary winding, so that the secondary auxiliary winding diffracts in a manner of being embedded in the secondary main winding, and thus does not occupy extra layers.

[0012] Another object of the utility model is to provide a driving power supply, wherein the driving power supply provided by the utility model has the intelligent control capability of receiving external signals, the ability to adjust brightness and color temperature, and can limit the overall size (i.e., the diameter of the circumscribed circle of the cross-section in the length direction of the shell) to within 35mm when the output power reaches the 12W power range.

[0013] To achieve at least one of the above purposes, the utility model provides a driving power supply, comprising:

[0014] An access circuit for electrically connecting to an external power source;

[0015] An output circuit for electrically connecting to a lamp;

[0016] A control circuit electrically connected to the access circuit and the output circuit, and used to directly or indirectly obtain electric energy through an external power source connected to the access circuit to power on, so as to control the output circuit to adjust the working state of the lamp;

[0017] The access circuit, the output circuit and the control circuit are arranged on a circuit board, and are arranged in a shell via the circuit board, wherein the diameter of the circumscribed circle of the cross section of the shell in the length direction is limited to less than 35 mm, so that the driving power supply can be adapted to a mounting hole with an aperture greater than or equal to 35 mm, so that when the size of the mounting hole adapted to the lamp driven by the driving power supply is greater than or equal to 35 mm, the driving power supply can be inserted into the mounting hole from the mounting side of the lamp; the control circuit has an antenna so as to receive an external signal after power-on, and control the output circuit according to the indication of the external signal, thereby realizing intelligent control of the lamp.

[0018] According to an embodiment of the utility model, the driving power supply further includes a switching power supply circuit, which includes a transformer, wherein the primary side of the transformer is electrically connected to the access circuit to obtain the first power transmitted by the access circuit, and the secondary side of the transformer is electrically connected to the output circuit to provide the output circuit with a second power supply for controlling the lamp;

[0019] Wherein, the transformer comprises:

[0020] a first magnetic core;

[0021] The frame has a central hole, and the first magnetic core is passed through the central hole;

[0022] The coil assembly includes a primary main winding, a secondary main winding and a primary auxiliary winding; wherein the primary main winding is divided into two parts and is respectively wound around the frame, the secondary main winding is wound between the two parts of the primary main winding, and the primary auxiliary winding is wound between the first part of the primary main winding close to the first magnetic core and the secondary main winding, and the primary auxiliary winding is evenly wound in a whole layer.

[0023] According to an embodiment of the present utility model, the primary auxiliary winding is densely wound or sparsely wound in a whole layer in a double-wire parallel winding manner.

[0024] According to an embodiment of the present invention, the coil assembly further includes a secondary auxiliary winding, and the secondary auxiliary winding and at least a portion of the secondary main winding are wound on the same layer.

[0025] According to an embodiment of the utility model, the secondary main winding is wound close to the first magnetic core, the secondary auxiliary winding is wound away from the magnetic core, and the secondary main winding is wound in multiple layers, wherein a layer away from the first magnetic core is arranged in the same layer in an alternating manner with the secondary auxiliary winding.

[0026] According to an embodiment of the utility model, the transformer adopts a vertical transformer, and the cross-sectional area of ​​the first magnetic core is set to 37mm 2 ~39mm 2 , the output power of the driving power supply can reach 12W.

[0027] According to an embodiment of the utility model, the output circuit includes:

[0028] a driving circuit, wherein the driving circuit is electrically connected to the control circuit to adjust the brightness and / or color temperature of the lamp through the second power supply according to a control signal; and

[0029] A power supply circuit is electrically connected to the secondary auxiliary winding to supply power to the control circuit after obtaining electrical energy through the secondary auxiliary winding.

[0030] According to an embodiment of the utility model, the control circuit also includes a control module; wherein the control module and the transformer are respectively arranged on two opposite sides of the circuit board, and the antenna is electrically connected to the control module and is arranged on the circuit board in the form of an onboard antenna.

[0031] According to an embodiment of the utility model, the housing includes a first shell and a second shell, the second shell is buckled with the first shell to form a receiving cavity for receiving a circuit board between the first shell and the second shell; the edge of the second shell is protruding toward the first shell and is provided with a positioning wall, the positioning wall is embedded in the first shell to achieve positioning between the second shell and the first shell; wherein:

[0032] The shell wall thickness is less than 2 mm, and the positioning wall height is greater than 2 mm; and / or both sides of the cross section of the shell bulge outward to form a bulging portion, thereby increasing the width of the accommodating cavity.

[0033] According to an embodiment of the utility model,

[0034] The two sides of the cross section of the shell bulge outward to form a bulging portion, thereby increasing the width of the accommodating cavity; wherein the portion where the first shell and the second shell are connected is located at the bulging portion; the shell has a split seam, and the split seam divides the shell into the first shell and the second shell; wherein the split seam is located in the middle of the bulging portion;

[0035] The positioning wall is provided with a clamping protrusion facing inward, the first shell is provided with a clamping wall, the clamping wall is provided with a first clamping groove, the clamping protrusion is clamped in the first clamping groove, and the positioning wall is sandwiched between the side wall of the first shell and the clamping wall;

[0036] The first shell is provided with a clamping wall on both sides, and the two clamping walls are respectively in contact with the two sides of the circuit board; the circuit board is clamped and limited by the first shell and the second shell; the first shell is provided with a first rib, and the second shell is provided with a second rib, the first rib is in contact with the lower surface of the circuit board, and the second rib is in contact with the upper surface of the circuit board, so as to clamp and limit the circuit board; the first shell is provided with a positioning column, and the circuit board is provided with a positioning hole, and the positioning column is inserted into the positioning hole, so as to position the circuit board;

[0037] The circuit board is provided with a transformer, and a thinned portion is provided on the side wall of the second shell at a position corresponding to the transformer, and the thinned portion thins the wall thickness of the second shell;

[0038] An input port is provided at one end of the shell, and an output port is provided at the other end, and the input port and the output port are both provided between the first shell and the second shell; the input port is used to pass an input wire, and the output port is used to pass an output wire, and the input wire and the output wire are respectively connected to two ends of the circuit board; the input wire is welded to a side of the circuit board away from the input port; the output wire is welded to a side of the circuit board away from the output port.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory and cannot limit the present invention. The above utility model contents can be combined arbitrarily, and these and other purposes of the present utility model will be fully reflected through the following detailed description and drawings.

[0040] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0042] Figure 1 This is a schematic diagram of a control system in one embodiment of the utility model;

[0043] Figure 2 This is a schematic diagram of a driving power supply block diagram in one embodiment of the utility model;

[0044] Figure 3 This is a schematic diagram of an interactive interface in an embodiment of the utility model;

[0045] Figure 4 This is a schematic diagram of a control method process in an embodiment of the utility model Figure 1 ;

[0046] Figure 5 This is a schematic diagram of a control method process in an embodiment of the utility model Figure 2 ;

[0047] Figure 6 This is an exemplary use scenario 1 of an embodiment of the utility model;

[0048] Figure 7 This is an exemplary use scenario 2 of an embodiment of the utility model;

[0049] Figure 8 This is a schematic diagram of the transformer structure in one embodiment of the utility model;

[0050] Fig. 9 This is a partial specific circuit diagram of a driving power supply in one embodiment of the utility model;

[0051] Fig.10 This is a schematic diagram of the overall structure of a driving power supply according to an embodiment of the utility model;

[0052] Fig.11 yes Fig.10 Right view of the middle drive power supply;

[0053] Fig.12 This is an exploded view of the driving power supply structure of an embodiment of the utility model;

[0054] Fig.13 This is a cross-sectional view of a driving power supply of an embodiment of the utility model;

[0055] Fig.14 It is an exploded cross-sectional view of a first housing, a second housing and a circuit board in one embodiment of the utility model;

[0056] Fig.15 This is a schematic diagram of the first shell structure of an embodiment of the utility model;

[0057] Fig.16 This is a schematic diagram of the second housing structure of an embodiment of the utility model;

[0058] Fig.17 This is a cross-sectional view of a driving power supply of an embodiment of the utility model;

[0059] Fig.18 It is a schematic diagram of the circuit board and electronic components structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0060] The embodiments of the utility model will be described in detail below. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0061] It should be understood that in the description of all embodiments of the present invention, the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does 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 limiting the present invention. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "coupled" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium to form a linkage relationship, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In each embodiment of the present invention, the symbol " / " means that it has two functions at the same time. The symbol "A and / or B" indicates that the combination of the objects connected by the symbol includes "A", "B", and "A and B".

[0063] Please refer to Figure 1 The utility model provides a control system, including a lamp 200 and a driving power supply 100. The lamp 200 has a dimming function; the driving power supply 100 is used to electrically connect the lamp 200 and drive the lamp 200; the driving power supply 100 can establish a binding relationship with a smart device 600 to adjust the working state of the lamp 200 based on the control of the smart device 600.

[0064] The smart device 600 may be any device or combination of devices that has data processing capabilities and external communication capabilities, such as a mobile phone, a computer, a smart watch, a smart car machine, etc.

[0065] The communication between the driving power supply 100 and the smart device 600 may be carried out in a radio frequency, Bluetooth or other manner, and in the following description, the Bluetooth manner is mainly used for explanation.

[0066] The driving power supply 100 may adjust the working state of the lamp 200, for example, by turning on or off the lamp, or adjusting the brightness and color temperature of the lamp 200.

[0067] In some solutions, the control system may further include a server 400 and a gateway 500. The driving power supply 100 can join the designated network where the gateway 500 is located in the binding state to complete the binding. After the binding is completed, the Internet can be accessed through the gateway 500 to interact with the smart device 600. The gateway 500 and the smart device 600 can interact with the server 400. In some examples, the server 400 mainly plays the role of data forwarding, storage and processing.

[0068] The driving power supply 100 in some schemes of the embodiments of the present utility model will be described in detail below, but the scope of the embodiments of the present utility model is not limited thereto.

[0069] like Figure 2 , Figure 3 ,based on Figure 2 , Figure 3 , a driving power supply 100 provided by an embodiment of the present utility model is specifically explained. Figure 2 It can be seen that the driving power supply 100 includes an access circuit 11, an output circuit 12 and a control circuit 13. The access circuit 11 is used to electrically connect to an external power supply, the output circuit 12 is used to electrically connect to a lamp 200, and the control circuit 13 is electrically connected to the access circuit 11 and the output circuit 12, and is used to directly or indirectly obtain electrical energy through the external power supply connected to the access circuit 11 to power on.

[0070] The external power supply may be a strong power supply, such as a 220V / 50Hz AC power supply, and the access circuit 11 may process the AC power supply and transmit it to the back end, wherein the processing may be, for example, rectification, filtering, etc. In one embodiment, the access circuit 11 includes a rectifier circuit for rectifying the AC power supply into a DC power supply and then outputting it.

[0071] The output circuit 12 can output one supply voltage or multiple supply voltages, depending on actual power demand.

[0072] The control circuit 13 can be understood as a circuit module with data processing capabilities and external communication capabilities. On this basis, the control circuit 13 can be supplemented with circuits or combinations of circuits with any other functions.

[0073] In this embodiment, the control circuit 13 is used to: when the binding state is not entered, obtain a trigger signal to determine that the binding state is entered;

[0074] When in the binding state, a request message is generated and sent out externally, so that: after the smart device 600 obtains the request message, a binding relationship with the driving power supply 100 is established to complete the binding;

[0075] After the binding is completed, the output circuit 12 is controlled to adjust the working state of the lamp 200 in response to the control instruction from the smart device 600 .

[0076] It can be seen that the failure to enter the binding state can be understood as the driving power supply 100 has not yet achieved binding with the smart device 600, and thus the smart device 600 cannot control the driving power supply 100. The binding state can be understood as a state in which the driving power supply 100 is ready to be bound with the smart device 600. In this state, the driving power supply 100 periodically broadcasts a request message to the outside so that the smart device 600 that can receive the request message can establish a binding relationship with the driving power supply 100 (for example, the smart device 600 adds the driving power supply 100 to the corresponding user's app account to complete the binding). After the binding is completed, at least one communication path is established between the smart device 600 and the driving power supply 100 (for example, point-to-point communication between the two is established through a Bluetooth direct connection), so that the control instructions sent by the smart device 600 can be received and executed by the driving power supply 100.

[0077] It is understandable that the driving power supply 100 is generally installed with the lamp 200 in a place that is difficult to access in daily life, such as the ceiling. Therefore, it is more convenient to trigger the binding state of the driving power supply 100 by turning the power on / off. In the relevant prior art, the number of power on / off times to trigger the binding state of the driving power supply 100 has been set at the factory, which is single, fixed, and cannot be changed later.

[0078] Based on this, in this embodiment, there are multiple ways to generate a trigger signal for triggering the control circuit 13 to enter the binding state, and the multiple ways are different from each other. Specifically, the trigger signal is generated by the driving power supply 100 in response to the first manipulation in the first mode, or the driving power supply 100 is generated in response to the second manipulation in the second mode; after the binding is completed, the first instruction sent by the smart device 600 is obtained, and the first mode and the second mode are switched based on the first instruction. The first manipulation and the second manipulation include at least one power-off and at least one power-on of the external power supply; in the first manipulation and the second manipulation, the number of power-offs and power-ons is different.

[0079] Furthermore, there are multiple ways for the driving power supply 100 provided in this embodiment to enter the binding state (i.e., reset), and the user can switch the first mode and the second mode of the driving power supply 100 through the first instruction, wherein in the first mode, the trigger signal for resetting is generated by the first manipulation, and in the second mode, the trigger signal for resetting is generated by the second manipulation. In the first manipulation and the second manipulation, the number of power-off and power-on times of the external power supply are different to form two different ways of triggering the driving power supply 100 to enter the binding state, and the user can change the way the driving power supply 100 enters the binding state according to needs.

[0080] In one example, the first manipulation includes powering off and powering on the external power supply N times, and the second manipulation includes powering off and powering on the external power supply M times; M and N are both integers greater than or equal to 5, and the difference between M and N is greater than or equal to 3. Powering off and powering on the external power supply can be controlled by a wall switch connected to the driving power supply 100.

[0081] Furthermore, it is more difficult to trigger the driving power supply 100 to enter the binding state in the second mode, and it is easier to trigger the driving power supply 100 to enter the binding state in the first mode. The user can set the reset mode according to the actual family needs. For example, a family with children can set the driving power supply 100 to the second mode, and then a more difficult second operation is required to trigger the reset of the driving power supply 100 to prevent children from accidentally triggering the reset of the driving power supply 100. For families without children, in order to more conveniently trigger the reset of the driving power supply 100, the driving power supply 100 can be set to the first mode.

[0082] In a further example, the first manipulation includes powering off and on the external power supply 8 times, and the second manipulation includes powering off and on the external power supply 16 times. That is, the difficulty of triggering the reset of the driving power supply 100 in the second mode is twice that of the first mode, which is sufficient to distinguish the difficulty of triggering the reset operation of the driving power supply 100 in the two modes.

[0083] In some embodiments, after the binding is completed, the control circuit 13 is further used to:

[0084] Obtain a second instruction, and in response to the second instruction, control the lamp 200 to gradually reduce the brightness from the initial brightness to turn off the lamp within a first duration; wherein the first duration is predefined by the user on the smart device 600 (e.g. Figure 3 In the interface shown, the "Duration" option under the "Sleep Aid Function Settings" interface is used for the user to customize the first duration); the starting brightness is the brightness value when the light was last turned on, or the brightness value freely defined by the user on the smart device 600.

[0085] Furthermore, the driving power supply 100 can trigger a function of gradually turning off the light within the first duration through the second instruction.

[0086] In a specific example, the user can set the first duration to 30 minutes through the mobile phone. If the brightness value when the light was last turned on was 80%, after the driving power supply 100 receives the second instruction, it will reduce the brightness of the lamp 200 from 80% to 0% within 30 minutes.

[0087] The user can achieve various lighting needs based on this function, such as the sleep-aiding function. When the user wants to sleep, the user can use the mobile phone to trigger the driving power supply 100 to gradually turn off the light within 30 minutes to achieve the sleep-aiding effect; of course, this function can also be used for other purposes, which is not specifically limited in this embodiment. In the subsequent embodiments, the sleep-aiding function of this function will be mainly described in detail.

[0088] Furthermore, the request message is also used to instruct the smart device 600 to instruct the driving power supply 100 to join a designated network after acquiring the request message.

[0089] Specifically, the driving power supply 100 can join a designated network through a Bluetooth gateway, and the designated network can be, for example, a Bluetooth network (e.g., a Bluetooth mesh network). In a bound state, the driving power supply 100 can join the Bluetooth network based on the instruction of the smart device 600 and communicate with the Bluetooth gateway through a Bluetooth signal. Furthermore, data interaction between the driving power supply 100 and the smart device 600 can be achieved based on forwarding of the Bluetooth gateway. For example, the user runs Xiaomi's "Mijia" application (APP) on a mobile phone (smart device 600). When the driving power supply 100 is bound, after the mobile phone scans the request message of the driving power supply 100, it can discover the driving power supply 100 through the "Mijia" application. After the user allows the driving power supply 100 to be added, the "Mijia" application will add the driving power supply 100 to the user's account. If the user's account is also bound to a Bluetooth gateway, the driving power supply 100 will be automatically added to a Bluetooth network where an available Bluetooth gateway is located. Then, the driving power supply 100 can access the external network based on the Bluetooth network, and the user can also remotely view the status of the driving power supply 100, issue control instructions, and other operations.

[0090] Among them, in order to enrich the communication connection form and improve the communication success rate, in this embodiment, the control circuit 13 can switchably work in the first connection state and the second connection state; wherein in the first connection state, the control circuit 13 establishes a communication relationship with the smart device 600 by direct connection, and in the second connection state, the control circuit 13 establishes a communication relationship with the smart device 600 through the designated network. Furthermore, the driving power supply 100 has multiple connection states. When the designated network communication is unreachable (for example, the network is disconnected), a direct connection communication can be established with the smart device 600 through the first connection state. In this connection state, the instructions of the smart device 600 will be sent directly to the driving power supply 100 (without passing through the gateway 500), with less delay and more timely response of the driving power supply 100. When the driving power supply 100 and the smart device 600 are far apart, the interaction can be established through the second connection state. For example, if the smart device 600 is a mobile phone and the user wants to control the switch of the lamp 200 when he is not at home, the remote interaction with the driving power supply 100 can be achieved by switching the driving power supply 100 to the second connection state. In short, the various connection states of the driving power supply 100 enrich its controlled paths and methods, and also facilitate user use.

[0091] In addition, in some schemes, the control circuit 13 also has an adaptive selection function, which can be triggered by the smart device 600. After turning on this function, the control power can adaptively select the first connection state and the second connection state. For example, when it finds that the first connection state is unreachable, it can automatically switch to the second connection state. When the second connection state is unreachable, it can automatically switch to the first connection state to improve the communication success rate between the driving power supply 100 and the smart device 600.

[0092] Furthermore, the control circuit 13 obtains the first instruction, specifically for: the control circuit 13 obtains the first instruction sent by the smart device 600 through a direct connection in the first connection state; or, the control circuit 13 obtains the first instruction through the designated network in the second connection state.

[0093] That is, the sleep aid function of the driving power supply 100 can be directly triggered by the smart device 600 in a direct connection manner, or can be triggered through a designated network. When triggered through a designated network, the first instruction can come from the smart device 600, or from other devices that have also joined the designated network.

[0094] A feasible solution for triggering the sleep-aiding function of the driving power supply 100 through a designated network is given below:

[0095] Specifically, the first instruction may be issued by the server 400 through the gateway 500, wherein the server 400 stores at least one trigger strategy predefined by the user, each trigger strategy defines a mapping relationship between at least one trigger condition and the first instruction, and each trigger condition is at least one of the following:

[0096] at least one executable function of at least one device joining the specified network and / or joining the user's account;

[0097] Time conditions.

[0098] When the triggering condition is met, the server 400 will send a first instruction to the driving power supply 100 through the gateway 500 to trigger its sleep-aiding function.

[0099] For example, if the trigger policy defines that the time reaches 22:00 as a trigger condition, the server 400 will send a first instruction to the driving power supply 100 at 22:00, and the driving power supply 100 will gradually turn off the light within a first duration (e.g., 30 minutes) starting from 22:00 to achieve a sleep-aiding effect. In another example, if the trigger policy defines a single-click event of a self-generating switch as a trigger condition, the server 400 will send a first instruction to the driving power supply 100 to trigger its sleep-aiding function when receiving a single-click event of the self-generating switch.

[0100] Therefore, the sleep-aiding function of the driving power supply 100 can be triggered not only by the smart device 600, but also by multiple ways through the defined triggering strategy, thus enriching its triggering methods. When triggering by defining a triggering strategy, after the smart device 600 defines the corresponding triggering strategy, the sleep-aiding function of the driving power supply 100 will be triggered as expected, without the need for the smart device 600 to participate in the specific triggering process, which is more intelligent.

[0101] In some embodiments, after the binding is completed, the control circuit 13 is further used to:

[0102] Obtain a third instruction, and in response to the third instruction, control the lamp 200 to gradually increase the brightness from the lowest brightness to the final brightness within a second duration; wherein the second duration is predefined by the user on the smart device 600 (e.g. Figure 3 In the interface shown, the "Duration" option under the "Wake-up Function Settings" interface is used for the user to customize the second duration); the minimum brightness is 0 or is freely defined by the user on the smart device 600; the final brightness is the brightness value when the light was turned off last time, or, it is the brightness value freely defined by the user on the smart device 600.

[0103] Furthermore, the driving power supply 100 can trigger the function of gradually turning on the light within the second duration through the third instruction. In a specific example, the user can set the second duration to 30 minutes through the mobile phone. If the brightness value when the light was turned on last time was 80%, then after the driving power supply 100 receives the third instruction, the brightness of the lamp 200 will be increased from 0% to 80% within 30 minutes.

[0104] The user can realize various lighting needs based on this function, such as the wake-up function. When the user gets up in the morning, the user can use the mobile phone to trigger the driving power supply 100 to gradually turn on the light within 30 minutes to achieve the wake-up effect (light alarm clock); of course, this function can also be used for other purposes, which is not specifically limited in this embodiment. In the subsequent embodiments, the user wake-up function will be mainly described in detail.

[0105] Furthermore, the request message is also used to instruct the smart device 600 to instruct the driving power supply 100 to join a designated network after obtaining the request message (the specific implementation of joining the designated network here can be understood by referring to the description of the above embodiment).

[0106] The control circuit 13 can switchably operate in a first connection state and a second connection state; in the first connection state, the control circuit 13 establishes a communication relationship with the smart device 600 by a direct connection, and in the second connection state, the control circuit 13 establishes a communication relationship with the smart device 600 through the designated network; the control circuit 13 obtains the second instruction, which is specifically used for: the control circuit 13 obtains the second instruction sent by the smart device 600 by a direct connection in the first connection state; or, the control circuit 13 obtains the second instruction through the designated network in the second connection state.

[0107] That is, the wake-up function of the driving power supply 100 can be directly triggered by the smart device 600 in a direct connection manner, or can be triggered through a designated network. When triggered through a designated network, the second instruction can come from the smart device 600 or from other devices that have also joined the designated network.

[0108] A feasible solution for triggering the wake-up function of the driving power supply 100 through a specified network is given below:

[0109] Specifically, the second instruction may be issued by the server 400 through the gateway 500, wherein the server 400 stores at least one trigger policy predefined by the user, each trigger policy defines a mapping relationship between at least one trigger condition and the second instruction, and each trigger condition is at least one of the following:

[0110] at least one executable function of at least one device joining the specified network and / or joining the user's account;

[0111] Time conditions.

[0112] When the trigger condition is met, the server 400 will send a second instruction to the driving power supply 100 through the gateway 500 to trigger its wake-up function.

[0113] For example, if the trigger policy defines that the time reaches 7:00 as a trigger condition, the server 400 will send a second instruction to the driving power supply 100 at 7:00, and the driving power supply 100 will gradually turn on the light within a second duration (e.g., 30 minutes) starting from 7:00 to achieve the wake-up effect. In another example, if the trigger policy defines a single-click event of the self-generating switch as a trigger condition, the server 400 will send a second instruction to the driving power supply 100 to trigger its wake-up function when receiving the single-click event of the self-generating switch.

[0114] Therefore, the wake-up function of the driving power supply 100 can be triggered not only by the smart device 600, but also by multiple ways through the defined trigger strategy, thus enriching its triggering methods. When triggering by defining a trigger strategy, after the smart device 600 defines the corresponding trigger strategy, the wake-up function of the driving power supply 100 will be triggered as expected, and the smart device 600 does not need to participate in the specific triggering process, which is more intelligent.

[0115] Furthermore, after the binding is completed, the control circuit 13 is also used to:

[0116] Obtain a fourth instruction, and lock the configuration parameters based on the fourth instruction so that the control circuit 13 keeps the configuration parameters unchanged after rebinding; wherein the configuration parameters include the first duration, the second duration, the starting brightness, the minimum brightness and / or the final brightness configured by the smart device 600 after the control circuit 13 was successfully bound last time.

[0117] Furthermore, the fourth instruction can lock the configuration parameters of the driving power supply 100 to prevent the configuration parameters from becoming invalid after the driving power supply 100 is reset (rebinded) (for example, restoring factory settings), thereby avoiding the tediousness of resetting the configuration parameters after the driving power supply 100 is reset.

[0118] In addition, for the convenience of operation, the smart device 600 is provided with an operating system and a display screen (such as a mobile phone), and is pre-installed with an application corresponding to the driving power supply 100 (such as the "Mijia" APP mentioned in the above embodiment. Of course, different IoT manufacturers provide different applications. The "Mijia" here is only an example, and this embodiment does not make too many restrictions here). The first instruction, the second instruction, the third instruction, the fourth instruction and other control instructions involved in the above embodiment, as well as the first duration, the second duration, the minimum brightness, the final brightness and other configuration parameters can all be triggered through the interactive interface provided by the APP, such as Figure 3 As shown, this is an interface for defining some configuration parameters through the interactive interface provided by the "Mi Home" APP.

[0119] Based on the control system and driving power supply 100 provided in the above embodiment, Figure 4-Figure 5 As shown, the utility model also provides a control method for a driving power supply 100 to drive a lamp 200. The driving power supply 100 can be used to implement the control method. Furthermore, the following description of the control method can be understood as a description of the working process, function, and specific implementation of the software and / or hardware in the driving power supply 100, and the related features between the two can be understood by reference.

[0120] like Figure 4 As shown, the control method at least includes S1 to S3, wherein:

[0121] S1. When the binding state is not entered, a trigger signal is obtained to determine that the binding state is entered; the trigger signal is generated by the driving power supply 100 in response to a first manipulation in the first mode, or is generated by the driving power supply 100 in response to a second manipulation in the second mode; wherein the first manipulation and the second manipulation include at least one power-off and at least one power-on; in the first manipulation and the second manipulation, the number of power-offs and power-ons is different;

[0122] S2. When entering the binding state, a request message is generated and sent out, so that: after the smart device 600 obtains the request message, a binding relationship with the driving power supply 100 is established to complete the binding;

[0123] S3, after the binding is completed, adjusting the working state of the lamp 200 in response to the control instruction from the smart device 600; and

[0124] S4. Obtain a first instruction, and switch between the first mode and the second mode based on the first instruction.

[0125] Furthermore, the first manipulation includes powering off and powering on N times, and the second manipulation includes powering off and powering on M times; M and N are both integers greater than or equal to 5, and the difference between M and N is greater than or equal to 3.

[0126] In some embodiments, Figure 5 As shown, after the binding is completed, the control method further includes:

[0127] S5, obtaining a second instruction, and in response to the second instruction, controlling the lamp 200 to gradually reduce the brightness from the starting brightness to turn off the lamp within a first duration; wherein the first duration is pre-defined by the user on the smart device 600; the starting brightness is the brightness value when the lamp was last turned on, or is a brightness value freely defined by the user on the smart device 600;

[0128] and / or,

[0129] S6, obtaining a third instruction, and in response to the third instruction, controlling the lamp 200 to gradually increase the brightness from the lowest brightness to the final brightness within the second duration; wherein the second duration is pre-defined by the user on the smart device 600, the lowest brightness is 0 or is freely defined by the user on the smart device 600; the final brightness is the brightness value when the light was turned off last time, or is the brightness value freely defined by the user on the smart device 600;

[0130] and / or,

[0131] S7. Obtain a fourth instruction, and lock configuration parameters based on the fourth instruction, so that the driving power supply 100 keeps the configuration parameters unchanged after rebinding; wherein the configuration parameters include the first duration, the second duration, the starting brightness, the minimum brightness and / or the final brightness configured by the smart device 600 after the driving power supply 100 was successfully bound last time.

[0132] In some embodiments, the request message is also used to instruct the smart device 600 to instruct the driving power supply 100 to join a designated network after obtaining the request message; wherein the driving power supply 100 can switchably operate between a first connection state and a second connection state; wherein in the first connection state, the driving power supply 100 establishes a communication relationship with the smart device 600 through a direct connection, and in the second connection state, the driving power supply 100 establishes a communication relationship with the smart device 600 through the designated network.

[0133] Further, obtaining the first instruction and / or the second instruction specifically includes:

[0134] In the first connection state, the control circuit 13 obtains the first instruction and / or the second instruction sent by the smart device 600 by direct connection;

[0135] or,

[0136] In the second connection state, the control circuit 13 obtains the first instruction and / or the second instruction through the designated network.

[0137] The driving power supply 100 and the control method provided in the above embodiments are mainly described for the system and software functions. For the hardware and structural parts of the driving power supply 100, specific embodiments will be provided in the following embodiments for detailed description. It should be noted that the above embodiments for the system and software can be combined with the embodiments for the hardware and structure in the following text.

[0138] See also Figure 2 , Figure 6-Figure 18 ,based on Figure 6-Figure 18 , a driving power supply 100 provided by the utility model is specifically explained, as follows Figure 2 , shows a schematic diagram of the circuit connection block diagram of the driving power supply 100; it can be seen that the driving power supply 100 at least includes an access circuit 11, an output circuit 12 and a control circuit 13. The access circuit 11 is used to electrically connect to an external power supply, the output circuit 12 is used to electrically connect to a lamp 200, and the control circuit 13 is electrically connected to the access circuit 11 and the output circuit 12, and is used to directly or indirectly obtain electrical energy through the external power supply connected to the access circuit 11 to power on, so as to control the output circuit 12 to adjust the working state of the lamp 200.

[0139] The external power supply may be a strong power supply, such as a 220V / 50Hz AC power supply, and the access circuit 11 may process the AC power supply and transmit it to the back end, wherein the processing may be, for example, rectification, filtering, etc. In one embodiment, the access circuit 11 includes a rectifier circuit for rectifying the AC power supply into a DC power supply and then outputting it.

[0140] The lamp 200 can be understood as a lamp such as a downlight or a spotlight embedded in a suspended ceiling. Such lamps are generally installed through a mounting hole reserved in the suspended ceiling. The aperture of the mounting hole varies according to the size and specifications of the lamp. In the related prior art, in order to realize the intelligence of such lamps, an intelligent driving power supply is generally connected to the lamp, and then the external signal is received through the intelligent driving power supply to implement intelligent control of the lamp. However, the circuit of the intelligent driving power supply is complex, making it difficult to make its volume very small, resulting in some small-sized lamps being unable to realize intelligence through an external intelligent driving power supply. For example, the starry sky spotlight is one of the new types of spotlights. It is composed of a plurality of mini spotlights, which can create a starry sky ceiling effect on the ceiling. However, since the diameter of the mini spotlight is very small (generally 25mm-55mm), the diameter of the mounting hole that matches the mini spotlight is also very small, which makes it difficult for the intelligent driving power supply to pass through the mounting hole, greatly increasing the difficulty of installation.

[0141] Based on this, a small-sized intelligent driving power supply is provided in the present embodiment for intelligent driving of such small lamps. Specifically, the access circuit 11, the output circuit 12 and the control circuit are arranged on a circuit board 1, and are arranged in a housing 2 via the circuit board 1, wherein the diameter of the circumscribed circle of the cross section in the length direction of the housing 2 is limited to less than 35 mm, so that the driving power supply 100 can be adapted to a mounting hole 300 with an aperture greater than or equal to 35 mm, so that when the size of the mounting hole adapted to the lamp 200 driven by the driving power supply 100 is greater than or equal to 35 mm, the driving power supply 100 can be inserted into the mounting hole 300 from the mounting side of the lamp 200 (such as Figure 6 As shown), the control circuit 13 has an antenna 132 so as to receive an external signal after power-on and control the output circuit 12 according to the instruction of the external signal, thereby realizing intelligent control of the lamp 200.

[0142] When in use, first pull the power cord downward from the mounting hole 300, then connect the power cord to the driving power supply 100, and the output wire 29 of the driving power supply 100 is connected to the lamp 200 through the connecting terminal 292. After the connection is completed, first insert the driving power supply 100 and the connecting terminal 292 into the ceiling from the mounting hole 300, and then embed the lamp 200 into the mounting hole 300 for installation.

[0143] Furthermore, the size of the housing 2 of the driving power supply 100 provided in this embodiment is limited to within 35 mm, so that the driving power supply 100 can be adapted to a 35 mm mounting hole 300 at a minimum. When the lamp 200 is installed, the driving power supply 100 can be directly inserted into the ceiling through the mounting hole 300, and convenient hidden installation (such as Figure 7 As shown), it is beneficial to realize the intelligent transformation of the small-sized lamp 200.

[0144] In some embodiments, Figure 2 As shown, the driving power supply 100 also includes a switching power supply circuit 14, which includes a transformer 141, wherein the primary side of the transformer 141 is electrically connected to the access circuit 11 to obtain the first power transmitted by the access circuit 11, and the secondary side of the transformer 141 is electrically connected to the output circuit 12 to provide the output circuit 12 with a second power supply for controlling the lamp 200.

[0145] When the external power supply is a high-voltage power supply, the primary side of the transformer 141, i.e., the high-voltage side, is used to access the DC high-voltage power supply processed by the access circuit 11, and perform voltage conversion on it and output it to the output circuit 12 via the secondary side.

[0146] In order to reduce the volume of the transformer 141, in this embodiment, the layout relationship between the windings of the transformer 141 is specially designed. Specifically, the transformer 141 includes a first magnetic core 1411, a skeleton 1412 and a coil assembly 1413. The first magnetic core 1411 is made of magnetic material, and its shape is adapted to the skeleton 1412. The skeleton 1412 has a central hole, and the first magnetic core 1411 is inserted into the central hole; the coil assembly 1413 includes a primary main winding, a secondary main winding (N3) and a primary auxiliary winding (N2); the primary main winding is divided into two parts (N1 and N5) and respectively wound on the skeleton 1412, the secondary main winding is wound between the two parts of the primary main winding, and the primary auxiliary winding (N2) is wound between the first part of the primary main winding (N1) close to the first magnetic core 1411 and the secondary main winding (N3) (as shown in FIG. 1 ). Figure 8 As shown), the primary auxiliary winding is evenly wound in a whole layer, that is, the primary auxiliary winding is arranged between the primary main winding and the secondary main winding. The primary auxiliary winding serves as both a power supply winding and a shielding layer, so that no additional shielding layer is required between the primary main winding and the secondary main winding, thereby reducing the volume of the transformer 141.

[0147] In addition, a primary auxiliary winding is wound between the primary main winding and the secondary main winding, and one end of the primary auxiliary winding is connected to the primary ground (such as Fig. 9 In the embodiment, pin 4 of the transformer is grounded) to return the common-mode interference signal of the primary side of the transformer 141 to the ground through the primary auxiliary winding, so as to improve the EMI problem caused by the common-mode signal being transmitted to the secondary through the interlayer capacitance between the primary and secondary.

[0148] Furthermore, the skeleton 1412 also includes a winding part and a pin part; wherein the center hole is arranged in the winding part, and the winding part is used to wind the windings of the coil assembly 1413; the pin part is used to lead out the pins of each winding of the coil assembly 1413, including a first pin and a second pin arranged relatively to each other; wherein the pin of the primary main winding is led out by the first pin, and the pin of the secondary main winding is led out by the second pin; the distance between the first pin and the second pin is greater than or equal to 6 mm, so that there is no need to wrap insulating tape around the periphery of the first magnetic core 1411, thereby reducing the overall size of the transformer 141.

[0149] Furthermore, the primary auxiliary winding is wound densely or sparsely in a whole layer by means of bifilar winding, so as to evenly wind a whole layer without occupying the additional slot depth of the frame 1412. Specifically, Figure 8 As shown, the number of turns of the primary auxiliary winding cannot fill the entire layer, resulting in the failure to achieve the effect of the shielding layer. Therefore, in this embodiment, the primary auxiliary winding is wound with two coils in parallel, and is evenly wound in a sparse manner to form an entire layer.

[0150] Furthermore, if Figure 8 As shown, the coil assembly 1413 further includes a secondary auxiliary winding (N4), which is wound on the same layer as at least part of the secondary main winding, so that the secondary auxiliary winding does not occupy additional layers, thereby reducing the volume of the transformer 141.

[0151] Specifically, the secondary main winding is wound close to the first magnetic core 1411, and the secondary auxiliary winding is wound away from the magnetic core. The secondary main winding is wound in multiple layers, wherein a layer away from the first magnetic core 1411 is alternately arranged in the same layer with the secondary auxiliary winding.

[0152] In other words, the number of layers of the secondary main winding is greater than 1, and the number of layers of the secondary auxiliary winding is less than 1, and the portion of the secondary main winding that is less than one layer shares one layer with the secondary auxiliary winding, so that the secondary auxiliary winding diffracts in a manner of being embedded in the secondary main winding, and thus does not occupy extra layers. Generally speaking, the number of turns of the portion of the secondary main winding that shares one layer with the secondary auxiliary winding is A, and the number of turns of the secondary auxiliary winding is B, then A:B<1, so as to improve the stability of the secondary auxiliary winding.

[0153] Furthermore, in order to maximize the output power under the condition that the volume of the driving power supply 100 is limited, the transformer 141 adopts a vertical transformer 141, and the cross-sectional area of ​​the first magnetic core 1411 is set to 37mm 2 ~39mm 2 , the output power of the driving power supply 100 can reach 12W.

[0154] In addition, the switching power supply circuit 14 further includes: a program control module, electrically connected to the first end of the primary main winding, for controlling the on and off of the power supply circuit of the primary main winding; wherein the first end is used for the starting end of the primary main winding close to the first magnetic core 1411 to improve the radiation interference problem. The program control module may include a switching power supply chip and its peripheral circuits, which may be specifically as follows Fig. 9 As shown, the switching power supply chip can be, for example, a KP28132AWGA chip, and the No. 3 terminal of the primary main winding of the transformer 141 is used as a starting line end to electrically connect the No. 5 pin of the chip to minimize the radiation interference generated by the dynamic point of the transformer.

[0155] In a specific example of the transformer 141, the frame 1412 of the transformer 141 adopts a vertical frame, and its Ae value is set to 39mm 2 , the slot width of the skeleton 1412 is 8.7mm, the slot depth is 2.85mm, the thickness of the insulating tape 1414 set between adjacent windings is 0.06mm, the wire diameter (outer diameter) of the primary main winding is 0.25mm, the number of turns of the primary main winding is 94, the number of winding layers is 3, the wire diameter (outer diameter) of the primary auxiliary winding is 0.17mm, the number of turns of the primary auxiliary winding is 17, the number of layers is 1, and the wire diameter (outer diameter) of the secondary main winding is 0.48mm, The secondary main winding has 38 turns and 2.1 layers (i.e. 3 layers). The wire diameter (outer diameter) of the secondary auxiliary winding is 0.4mm, the number of turns is 15, and the number of layers is 0.7. It shares one layer with the outermost layer of the secondary main winding, i.e. the secondary main winding and the secondary auxiliary winding occupy 3 layers together. The number of layers of the insulating tape 1414 is 8 in total. The overall thickness of the coil assembly 1413 is finally 2.84mm, which is smaller than the groove depth of the skeleton 1412 of 2.85mm.

[0156] The output circuit 12 can output one power supply voltage or multiple power supply voltages, which can be changed based on the actual power demand. In one embodiment, the output circuit 12 includes a driving circuit 121 and a power supply circuit 122, wherein the driving circuit 121 is electrically connected to the control circuit 13 to adjust the brightness and / or color temperature of the lamp 200 through the second power supply according to the control signal; the power supply circuit 122 is electrically connected to the secondary auxiliary winding to power the control circuit 13 after obtaining electric energy through the secondary auxiliary winding. Furthermore, the output circuit 12 can output two voltage levels of power supply voltage, one is a second power supply (for example, 46V) for powering the lamp 200, and the other is a power supply (for example, 3.3V) for powering the control circuit 13. The power supply circuit 122 of the control circuit 13 is directly powered by the secondary auxiliary winding, which reduces the number of circuit components and reduces the area of ​​the circuit board 1.

[0157] In addition, the output circuit 12 may be provided with circuit components or a combination of circuit components for filtering, voltage stabilization, rectification, etc.

[0158] The control circuit 13 can be understood as a circuit module with data processing capabilities and external communication capabilities. On this basis, the control circuit 13 can be added with circuits or combinations of circuits with any other functions. In one embodiment, the control circuit 13 includes: a control module 131 and an antenna 132 that integrate data processing capabilities and communication capabilities, wherein the control module 131 is powered by a power supply voltage output by the output circuit 12, and its data processing capabilities and communication capabilities can be realized by two discrete chips or integrated by one chip, and its external communication method can be, for example, Bluetooth, radio frequency, etc.

[0159] Furthermore, in order to prevent the radiation performance of the antenna 132 from being affected by the moving point on the circuit board 1, a static point is provided between the antenna 132 and the moving point to play an isolation role.

[0160] like Fig. 9 As shown, a specific example of the access circuit 11, the switching power supply circuit 14 and the output circuit 12 is given.

[0161] It can be seen that the access circuit 11 is composed of a protection circuit, a filter circuit and a rectifier circuit. Among them, the protection circuit includes a fuse F1 for overcurrent protection and a varistor RV1 for overvoltage protection, the filter circuit includes GM1 and C1, and the rectifier circuit includes a rectifier bridge BD1. The switching power supply circuit 14 is composed of a transformer 141, a switching power supply chip KP28132AWGA and its peripheral circuits.

[0162] During specific use, the AC power on the neutral and live wires (L, N) is connected via F1 and RV1, and is filtered by GM1 and C1 before being transmitted to the rectifier bridge BD1. BD1 rectifies the AC power and outputs DC power to the rear-end switching power circuit 14, which performs voltage conversion and outputs it to the rear-end output circuit 12.

[0163] In the output circuit 12, the power supply circuit 122 is divided into two routes. The first route is formed by D1, CE1, C34, etc., which is used to rectify and filter the electric energy transmitted by the secondary main winding of the transformer 141, output a 46V DC power supply, and transmit it to the lamp 200. The second route is composed of D1 and the LDO chip DS8242-33A3, which is used to rectify the electric energy transmitted by the secondary auxiliary winding of the transformer 141, and output a 3.3V voltage after voltage conversion to power the control module 131.

[0164] The control module 131 may receive external signals by low-power Bluetooth communication to reduce the power consumption of the control circuit 13, so that it can directly obtain power from the secondary auxiliary winding via the power supply circuit 122. In a further example, the control module 131 of the control circuit 13 may adopt the MHCB11S Bluetooth module, and the drive circuit 121 may adopt the constant current dimming chip Hi7001, specifically, a two-way dimming chip may be used to adjust the brightness and color temperature of the lamp 200.

[0165] When in use, the Bluetooth module is powered by a 3.3V power supply provided by the power supply circuit 122. After power-on, it receives an external control signal through the antenna 132, and generates a corresponding PWM dimming signal based on the control signal and sends it to the constant current dimming chip, thereby adjusting the brightness and color temperature of the lamp 200 through the constant current dimming chip.

[0166] In some embodiments, Figure 10-12 As shown, a receiving cavity 23 is formed inside the housing 2, and the circuit board 1 is received in the receiving cavity 23; Fig.10 and Fig.11 As shown, the housing 2 is in the shape of an elongated strip, and the diameter of the circumscribed circle of the cross section perpendicular to the extension direction is less than 35 mm, so that the driving power supply 100 can be installed in the mounting hole 300 with a hole diameter greater than or equal to 35 mm, so that the driving power supply 100 can be adapted for installation with small-sized lamps (such as a mini spotlight with a diameter of 35 mm).

[0167] It is understandable that the strip can be a straight strip or a curved strip, and the cross section can be a circle, an ellipse, a polygon or other shapes, as long as the diameter of the circumscribed circle of the cross section is less than 35 mm, it is within the protection scope of the present utility model. Fig.11 The dotted circle shown is the 35 mm mounting hole 300 . It can be seen that the diameter of the circumscribed circle of the driving power supply 100 perpendicular to the extension direction is less than 35 mm.

[0168] Furthermore, if Figure 10-11 and Fig.13 As shown, both sides of the cross section of the housing 2 bulge outward to form a bulging portion 24, thereby increasing the width of the accommodating cavity 23. The bulging portion 24 may be arc-shaped or polygonal. In one embodiment, as shown in FIG. Fig.11 As shown in FIG. 1 , the bulging portion 24 is arc-shaped. Fig.11 It can be seen that the diagonal distance of the cross section of the housing 2 directly determines the diameter of the circumscribed circle, such as Fig.13As shown, when the diagonal distance of the cross section is constant, the closer the cross section is to a circle, the larger the area of ​​the cross section is, and the larger the space of the corresponding accommodating cavity 23 is. Since the circuit board 1 is placed horizontally, the left and right sides of the shell 2 bulge outward in this embodiment to increase the width of the accommodating cavity 23, so that the shell 2 can accommodate more electronic components without expanding the diagonal distance, thereby ensuring that the diameter of the circumscribed circle is less than 35 mm.

[0169] It is worth noting that in this embodiment, the upper surface and the lower surface of the housing 2 are both planes. In other embodiments, the upper surface and the lower surface of the housing 2 may also bulge outward, thereby increasing the space at the upper and lower ends of the accommodating cavity 23. In one embodiment, the cross section is circular, so that the area of ​​the cross section is maximized while ensuring that the diameter of the circumscribed circle is less than 35 mm. In this case, the bulging portion 24 can be understood as a part of the circular outer surface of the housing 2.

[0170] Furthermore, thanks to the bulging portion 24 which increases the width of the accommodating cavity 23 , the accommodating cavity 23 can accommodate more electronic components within a unit length, thereby shortening the length of the housing 2 . In one embodiment, the length of the housing 2 is 90 mm.

[0171] Furthermore, if Fig.10 As shown, the housing 2 includes a first shell 21 and a second shell 22, and the second shell 22 is buckled with the first shell 21 to form the accommodating cavity 23 between the first shell 21 and the second shell 22; wherein the connecting portion of the first shell 21 and the second shell 22 is located at the bulging portion 24, so as to facilitate demoulding of the first shell 21 and the second shell 22 during injection molding. It can be understood that the connecting portion is the portion where the first shell 21 and the second shell 22 are connected.

[0172] Furthermore, if Fig.10 and Fig.11 As shown, the housing 2 has a split seam 25, and the split seam 25 splits the housing 2 into the first shell 21 and the second shell 22; wherein the split seam 25 is located in the middle of the bulging portion 24, so as to facilitate demoulding of the first shell 21 and the second shell 22 during injection molding. Furthermore, the outer shape of the housing 2 is symmetrical in the upper and lower parts, and the split seam 25 divides the outer shape of the housing 2 into equal parts in the upper and lower parts.

[0173] In some embodiments, Figure 13-Figure 16 As shown, a positioning wall 221 is provided on the edge of the second shell 22 protruding toward the first shell 21 , and the positioning wall 221 is embedded in the first shell 21 to achieve positioning between the second shell 22 and the first shell 21 .

[0174] Furthermore, the wall thickness of the shell 2 is less than 2 mm, so that the shell 2 can maximize the internal space of the accommodating cavity 23 while ensuring the structural strength; in one embodiment, the thickness of the thinnest part of the shell 2 is 1.1 mm, and the thickness of the thickest part is 2 mm. Furthermore, the height of the positioning wall 221 is greater than 2 mm to enhance the structural strength of the first shell 21 and the second shell 22 at the connection part.

[0175] Furthermore, if Fig.13 and Fig.14 As shown, the positioning wall 221 is provided with a snap-fitting protrusion 2211 facing inward, the first shell 21 is provided with a snap-fitting wall 211, the snap-fitting wall 211 is provided with a first snap-fitting groove 2111, and the snap-fitting protrusion 2211 is snap-fitted to the first snap-fitting groove 2111 to realize the snap-fitting of the first shell 21 and the second shell 22; wherein, the positioning wall 221 is clamped between the side wall of the first shell 21 and the snap-fitting wall 211, so that the wall thickness of the shell 2 at the bulge 24 position is formed by the superposition of the side wall of the first shell 21, the positioning wall 221 and the snap-fitting wall 211, thereby further increasing the structural strength of the first shell 21 and the second shell 22 at the connection portion.

[0176] Furthermore, in this embodiment, the positioning wall 221 is sandwiched between the side wall of the first shell 21 and the engaging wall 211 to prevent the engaging protrusion 2211 from being separated from the first engaging groove 2111 , thereby improving the connection stability between the first shell 21 and the second shell 22 .

[0177] Furthermore, the first housing 21 is provided with a clamping wall 211 on both sides, and the two clamping walls 211 are respectively in contact with the two sides of the circuit board 1, so that the inner side of the clamping wall 211 is supported by the circuit board 1, further increasing the structural strength of the connecting part between the first housing 21 and the second housing 22. At the same time, the clamping wall 211 also has an installation guide function for the circuit board 1, so that the circuit board 1 can be easily installed into the first housing 21.

[0178] Furthermore, if Fig.15 and Fig.16 As shown, the first shell 21 is provided with buckles 212 at both ends in the length direction, and the second shell 22 is provided with a second snap-in groove 222 at a position corresponding to the buckle 212. The buckle 212 is snap-fitted into the second snap-in groove 222 to enhance the connection stability between the first shell 21 and the second shell 22.

[0179] In some embodiments, Fig.13 and Fig.16As shown, since the transformer 141 is relatively large, in order to ensure that the transformer 141 can be accommodated in the accommodating cavity 23, the side wall of the second shell 22 is provided with a thinned portion 223 at a position corresponding to the transformer 141, and the thinned portion 223 thins the wall thickness of the second shell 22.

[0180] In some embodiments, Figure 14-16 As shown, the circuit board 1 is clamped and limited by the first shell 21 and the second shell 22, so that the circuit board 1 does not need to be fixed with screws, saving the space required for the screws and threaded column structure inside the accommodating cavity 23, thereby reducing the size of the housing 2. In addition, since the circuit board 1 does not need to be fixed with screws, the assembly efficiency is improved.

[0181] Further, the first shell 21 is provided with a first rib 213, and the second shell 22 is provided with a second rib 224, the first rib 213 abuts against the lower surface of the circuit board 1, and the second rib 224 abuts against the upper surface of the circuit board 1, so as to clamp and limit the circuit board 1;

[0182] Furthermore, if Fig.15 and Fig.18 As shown, the first housing 21 is provided with a positioning column 214, the circuit board 1 is provided with a positioning hole 18, and the positioning column 214 is inserted into the positioning hole 18 to position the circuit board 1. It is worth noting that the clamping wall 211 has an auxiliary limiting function for the circuit board 1, so that the circuit board 1 is limited by the positioning column 214 and the clamping wall 211 in the horizontal direction, so that the position of the circuit board 1 is more stable.

[0183] Furthermore, if Fig.12 and Fig.18 As shown, electronic components are disposed on both the upper surface and the lower surface of the circuit board 1 , thereby improving the space utilization of the circuit board 1 and reducing the area of ​​the circuit board 1 .

[0184] Furthermore, if Fig.18 As shown, the control module 131 and the transformer 141 are respectively arranged on two opposite sides of the circuit board 1, and the antenna 132 is electrically connected to the control module 131, so as to make full use of the space on the front and back sides of the circuit board 1 to layout circuit components, thereby achieving the purpose of reducing the overall size of the driving power supply 100. Among them, arranging the control module 131 and the transformer 141 on two sides of the circuit board 1 can reduce the electromagnetic interference between the two; the antenna 132 is arranged on the circuit board 1 in the form of an onboard antenna to reduce the occupation of the internal space of the accommodating cavity 23 by the antenna 132. In one embodiment, the transformer 141 is arranged on the upper surface of the circuit board 1, and the control module 131 and the antenna 132 are arranged on the lower surface of the circuit board 1.

[0185] In some embodiments, Fig.12 and Fig.18 As shown, the driving circuit 121 includes a driving chip 1211 and a driving circuit board 1212 for carrying the driving chip 1211, the driving chip 1211 is welded to the driving circuit board 1212, and the driving circuit board 1212 is plugged into the circuit board 1 to accelerate the heat dissipation rate of the driving chip 1211. Furthermore, there are two driving chips 1211 (to achieve dual-channel dimming), which are respectively welded to two driving circuit boards 1212, and the two driving circuit boards 1212 are arranged at intervals; wherein, the driving circuit board 1212 is vertically plugged into the circuit board 1 to further accelerate the heat dissipation rate of the driving chip 1211 while reducing space occupation. The two driving chips 1211 are electrically connected to the controlled lamp 200 through the output wires 29, respectively, for adjusting the brightness and color temperature of the controlled lamp 200.

[0186] In some embodiments, Figure 15-17 as well as Fig.12 As shown, an input port 26 is provided at one end of the housing 2, and an output port 27 is provided at the other end, and the input port 26 and the output port 27 are both provided between the first housing 21 and the second housing 22, that is, the upper part of the input port 26 is constructed by the first housing 21, and the lower part is constructed by the second housing 22, and the upper part of the output port 27 is constructed by the first housing 21, and the lower part is constructed by the second housing 22. The input port 26 is used to pass an input wire 28, and the output port 27 is used to pass an output wire 29, and the input wire 28 and the output wire 29 are respectively connected to the two ends of the circuit board 1.

[0187] Furthermore, if Fig.10 and Fig.17 As shown, the input wire 28 is provided with a first clamping joint 281 at a position corresponding to the input port 26, and the first clamping joint 281 is clamped and limited by the input port 26; the first clamping joint 281 is made of rubber material, and the first clamping joint 281 and the input port 26 are interference-fitted, so that the first clamping joint 281 seals the input port 26. The output wire 29 is provided with a second clamping joint 291 at a position corresponding to the output port 27, and the second clamping joint 291 is clamped and limited by the output port 27; the second clamping joint 291 is made of rubber material, and the second clamping joint 291 and the output port 27 are interference-fitted, so that the second clamping joint 291 seals the output port 27.

[0188] Furthermore, if Fig.17As shown, the input wire 28 is soldered to the side of the circuit board 1 away from the input port 26, and the output wire 29 is soldered to the side of the circuit board 1 away from the output port 27 to prevent the input wire 28 and the output wire 29 from being desoldered. The access circuit 11 is connected to the external power supply through the input wire 28, and the output circuit 12 is connected to the lamp 200 through the output wire 29 to drive the lamp 200. In this embodiment, the input port 26 and the output port 27 are respectively located above the circuit board 1, and the input wire 28 and the output wire 29 located inside the housing 2 are both bent in an "S" shape and soldered to the lower surface of the circuit board 1. Soldering holes 19 are respectively opened at both ends of the circuit board 1, and the input wire 28 and the output wire 29 are respectively inserted into the welding holes 19 from the lower surface of the circuit board 1, and the input wire 28 and the output wire 29 are respectively soldered to the welding holes 19.

[0189] At this point, in combination with the above embodiments, the driving power supply 100 provided by the utility model has the intelligent control capability of receiving external signals, the ability to adjust brightness and color temperature, and can limit the overall size (i.e. the diameter of the circumscribed circle of the cross-section in the length direction of the shell 2) to within 35mm when the output power reaches the 12W power range, so as to adapt to the intelligent driving of 35mm tubes and spotlights.

[0190] In the description of this specification, the description with reference to the terms "some embodiments", "a specific implementation", "a specific implementation process", "an example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms corresponding to the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0191] It should also be noted that the above-mentioned embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments, that is, the technical solutions disclosed in the later (order of sequence recorded in the text) embodiments should include the technical solutions recorded in the embodiment and the technical solutions recorded in all embodiments before the embodiment.

[0192] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A driving power supply, characterized in that: include: An access circuit for electrically connecting to an external power source; An output circuit for electrically connecting to a lamp; A control circuit electrically connected to the access circuit and the output circuit, and used to directly or indirectly obtain electric energy through an external power source connected to the access circuit to power on, so as to control the output circuit to adjust the working state of the lamp; The access circuit, the output circuit and the control circuit are arranged on a circuit board, and are arranged in a housing via the circuit board, wherein the diameter of the circumscribed circle of the cross section in the length direction of the housing is limited to less than 35 mm, so that the driving power supply can be adapted to a mounting hole with a hole diameter greater than or equal to 35 mm, so that when the size of the mounting hole adapted to the lamp driven by the driving power supply is greater than or equal to 35 mm, the driving power supply can be placed in the mounting hole from the mounting side of the lamp; The control circuit has an antenna so as to receive an external signal after power-on and control the output circuit according to the instruction of the external signal, thereby realizing intelligent control of the lamp.

2. The driving power supply according to claim 1, characterized in that: Also included is a switching power supply circuit, which includes a transformer, wherein the primary side of the transformer is electrically connected to the access circuit to obtain the first power transmitted by the access circuit, and the secondary side of the transformer is electrically connected to the output circuit to provide the output circuit with a second power supply for controlling the lamp; Wherein, the transformer comprises: a first magnetic core; The frame has a central hole, and the first magnetic core is passed through the central hole; The coil assembly includes a primary main winding, a secondary main winding and a primary auxiliary winding; wherein the primary main winding is divided into two parts and is respectively wound around the frame, the secondary main winding is wound between the two parts of the primary main winding, and the primary auxiliary winding is wound between the first part of the primary main winding close to the first magnetic core and the secondary main winding, and the primary auxiliary winding is evenly wound in a whole layer.

3. The driving power supply according to claim 2, characterized in that: The primary auxiliary winding is wound densely or sparsely in a whole layer in a bifilar winding manner.

4. The driving power supply according to claim 2, characterized in that: The coil assembly further includes a secondary auxiliary winding, and the secondary auxiliary winding and at least a portion of the secondary main winding are wound on the same layer.

5. The driving power supply according to claim 4, characterized in that: The secondary main winding is wound close to the first magnetic core, and the secondary auxiliary winding is wound away from the magnetic core. The secondary main winding is wound in multiple layers, wherein a layer away from the first magnetic core and the secondary auxiliary winding are alternately arranged in the same layer.

6. The driving power supply according to claim 2, characterized in that: The transformer adopts a vertical transformer, and the cross-sectional area of ​​the first magnetic core is set to 37mm 2 ~39mm 2 , the output power of the driving power supply can reach 12W.

7. The driving power supply according to claim 4, characterized in that: The output circuit comprises: a driving circuit, wherein the driving circuit is electrically connected to the control circuit to adjust the brightness and / or color temperature of the lamp through the second power supply according to a control signal; and A power supply circuit is electrically connected to the secondary auxiliary winding to supply power to the control circuit after obtaining electrical energy through the secondary auxiliary winding.

8. The driving power supply according to claim 2, characterized in that: The control circuit also includes a control module; wherein the control module and the transformer are respectively arranged on two opposite sides of the circuit board; the antenna is electrically connected to the control module and is arranged on the circuit board in the form of an onboard antenna.

9. The driving power supply according to any one of claims 1 to 8, characterized in that: The housing comprises a first shell and a second shell, the second shell being buckled with the first shell to form a receiving cavity for receiving the circuit board between the first shell and the second shell; a positioning wall is provided on the edge of the second shell protruding toward the first shell, the positioning wall is embedded in the first shell to realize the positioning between the second shell and the first shell; wherein: The shell wall thickness is less than 2 mm, and the positioning wall height is greater than 2 mm; and / or both sides of the cross section of the shell bulge outward to form a bulging portion, thereby increasing the width of the accommodating cavity.

10. The driving power supply according to claim 9, characterized in that: The two sides of the cross section of the shell bulge outward to form a bulging portion, thereby increasing the width of the accommodating cavity; wherein the portion where the first shell and the second shell are connected is located at the bulging portion; the shell has a split seam, and the split seam divides the shell into the first shell and the second shell; wherein the split seam is located in the middle of the bulging portion; The positioning wall is provided with a clamping protrusion facing inward, the first shell is provided with a clamping wall, the clamping wall is provided with a first clamping groove, the clamping protrusion is clamped in the first clamping groove, and the positioning wall is sandwiched between the side wall of the first shell and the clamping wall; The first shell is provided with a clamping wall on both sides, and the two clamping walls are respectively in contact with the two sides of the circuit board; the circuit board is clamped and limited by the first shell and the second shell; the first shell is provided with a first rib, and the second shell is provided with a second rib, the first rib is in contact with the lower surface of the circuit board, and the second rib is in contact with the upper surface of the circuit board, so as to clamp and limit the circuit board; the first shell is provided with a positioning column, and the circuit board is provided with a positioning hole, and the positioning column is inserted into the positioning hole, so as to position the circuit board; The circuit board is provided with a transformer, and a thinned portion is provided on the side wall of the second shell at a position corresponding to the transformer, and the thinned portion thins the wall thickness of the second shell; An input port is provided at one end of the shell, and an output port is provided at the other end, and the input port and the output port are both provided between the first shell and the second shell; the input port is used to pass an input wire, and the output port is used to pass an output wire, and the input wire and the output wire are respectively connected to two ends of the circuit board; the input wire is welded to a side of the circuit board away from the input port; the output wire is welded to a side of the circuit board away from the output port.

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