Circuit structure of phototherapy instrument and phototherapy instrument

Abstract

The utility model provides a circuit structure of a phototherapy instrument and the phototherapy instrument, the circuit structure comprises a light-emitting unit, a battery, a charging interface and at least two control chips, and the light-emitting unit is used for emitting light; the number of the batteries is at least two, and the at least two batteries are connected in parallel and then jointly connected with the light-emitting unit so as to supply power to the light-emitting unit. The charging interface is connected with an external power supply; the control chips are used for controlling the charging interface to supply power to the batteries, the at least two control chips are connected with the at least two batteries in a one-to-one correspondence manner, and the at least two control chips are connected with the charging interface and charge the batteries through the charging interface; according to the invention, each battery is equipped with an independent control chip for charging management, so that the accurate management of the charging of the plurality of batteries is realized, the problem of unbalanced charging of the plurality of batteries is reduced, and the performance of the phototherapy instrument is improved.

Description

Technical Field

[0001] This application belongs to the field of medical technology, and particularly relates to a circuit structure of a phototherapy instrument and a phototherapy instrument. Background Art

[0002] Existing phototherapy instruments generally have deficiencies in battery management and charging technology.

[0003] When there are multiple batteries in a phototherapy instrument, a centralized charging control strategy is usually adopted, that is, all batteries are charged through a unified charging control module. Due to the possible differences in the charging characteristics and states of different batteries, it is difficult to precisely control each battery in centralized charging, which easily leads to overcharging or undercharging of some batteries, affecting the overall performance and lifespan of the battery pack.

[0004] Therefore, how to improve the performance of phototherapy instruments is a problem that those skilled in the art need to solve currently. Utility Model Content

[0005] The purpose of this application is to provide a circuit structure of a phototherapy instrument and a phototherapy instrument, aiming to solve the problem of insufficient performance of traditional phototherapy instruments.

[0006] The first aspect of the embodiments of this application proposes a circuit structure of a phototherapy instrument, including:

[0007] A light-emitting unit for emitting light;

[0008] Batteries, the number of the batteries is at least two, and at least two of the batteries are connected in parallel and commonly connected to the light-emitting unit to supply power to the light-emitting unit;

[0009] A charging interface for connecting to an external power source;

[0010] At least two control chips, the control chips are used to control the charging interface to supply power to the batteries, and at least two of the control chips are connected to at least two of the batteries in one-to-one correspondence, at least two of the control chips are connected to the charging interface, and charge the batteries through the charging interface.

[0011] In some embodiments of this application, the circuit structure further includes at least two temperature detectors, at least two of the temperature detectors are arranged in one-to-one correspondence with at least two of the batteries, and each temperature detector is used to detect the temperature of the corresponding battery;

[0012] The temperature detector is configured to send a first detection signal when the temperature of the battery exceeds a preset threshold, and the control chip is used to control the on / off between the charging interface and the battery according to the first detection signal.

[0013] In some embodiments of the present application, the circuit structure further includes:

[0014] A power detection unit, the power detection unit includes a first resistor and a second resistor connected in series, the other end of the first resistor is grounded, and the other end of the second resistor is connected to the battery; the signal emitting end of the power detection unit is disposed between the first resistor and the second resistor;

[0015] A main control unit, configured to receive a first output signal from the signal emitting end of the power detection unit, obtain the power of the battery according to the intensity of the first output signal, and output a first control signal when the power reaches a preset power, the first control signal is used to drive the control chip to disconnect the charging interface from the battery.

[0016] In some embodiments of the present application, the circuit structure further includes an input detection unit, the input detection unit includes a third resistor and a fourth resistor connected in series, the other end of the third resistor is grounded, and the other end of the fourth resistor is connected to the charging interface; the signal emitting end of the input detection unit is disposed between the third resistor and the fourth resistor;

[0017] The main control unit is further configured to receive a second output signal from the signal emitting end of the input detection unit and obtain the input voltage value of the charging interface according to the second output signal.

[0018] In some embodiments of the present application, an anti-backflow unit is disposed between each battery and the light emitting unit;

[0019] Wherein, the anti-backflow unit includes a first switch element, and the first switch element is configured to control the on-off between the battery and the light emitting unit according to a second control signal of the main control unit.

[0020] In some embodiments of the present application, the first switch element includes a first transistor, a second transistor, and a third transistor. The first transistor and the second transistor are connected in series between the battery and the light emitting unit. One end of the third transistor is connected to the control electrodes of the first transistor and the second transistor, and the other end is grounded; the control electrode of the third transistor is connected to the main control unit.

[0021] In some embodiments of the present application, the first transistor and the second transistor are MOS transistors, and the third transistor is a triode; wherein, the source electrode of the first transistor is connected to the source electrode of the second transistor.

[0022] In some embodiments of the present application, the circuit structure includes a display unit for displaying the number of charging times of the battery. Among them, the display unit includes a plurality of LED lights, and the plurality of LED lights correspond to the plurality of digits of the charging times. The number of flashes of the LED lights is the value of the corresponding digit.

[0023] In some embodiments of the present application, the circuit structure further includes a current detection unit for detecting the current output to the light-emitting unit.

[0024] The current detection unit includes a detection resistor and a comparator. One end of the detection resistor is grounded, and the other end is connected to the light-emitting unit. The positive input and the negative input of the comparator are respectively connected to both ends of the detection resistor. The output terminal of the comparator is used to output a current detection signal, and the current detection signal is used to characterize the current value of the light-emitting unit; and / or, the light-emitting unit includes one or more of a blue light-emitting component, a red light-emitting component, and an infrared light-emitting component.

[0025] In a second aspect, the present application further provides a light therapy instrument including the above circuit structure.

[0026] The beneficial effects of the embodiments of the present utility model compared with the prior art are as follows: For the circuit structure of a light therapy instrument and the light therapy instrument described above, the circuit structure includes a light-emitting unit, a battery, a charging interface, and at least two control chips. The light-emitting unit is used for emitting light; the number of batteries is at least two, and at least two batteries are connected in parallel and jointly connected to the light-emitting unit to supply power to the light-emitting unit; the charging interface is used to connect to an external power source; the control chip is used to control the charging interface to supply power to the battery. At least two control chips are connected to at least two batteries in a one-to-one correspondence, and at least two control chips are connected to the charging interface and charge the battery through the charging interface. The present application realizes precise management of charging multiple batteries by equipping each battery with a separate control chip for charging management, which is beneficial to reducing the problem of uneven charging of multiple batteries, and further beneficial to improving the performance of the light therapy instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic frame structure diagram of the circuit structure of the light therapy instrument provided by an embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of the circuit structure of the light therapy instrument provided by an embodiment of the present application;

[0029] Figure 3 It is a schematic frame structure diagram of the circuit structure of the light therapy instrument provided by another embodiment of the present application;

[0030] Figure 4Schematic diagram of the circuit structure of the main control unit provided by an embodiment of the present application;

[0031] Figure 5 Schematic diagram of the structure of the power detection unit provided by an embodiment of the present application;

[0032] Figure 6 Schematic diagram of the structure of the input detection unit provided by an embodiment of the present application;

[0033] Figure 7 Schematic diagram of the structure of the anti-backflow unit provided by an embodiment of the present application;

[0034] Figure 8 Schematic diagram of the structure of the display unit provided by an embodiment of the present application;

[0035] Figure 9 Schematic diagram of the structure of the current detection unit provided by an embodiment of the present application;

[0036] Figure 10 Schematic diagram of the structure of the power-on / off unit provided by an embodiment of the present application.

[0037] Specific element symbol description: R21 - detection resistor, R35 - fourth resistor, R48 - third resistor, R49 - second resistor, R50 - first resistor, U6 - comparator, Q3 - second transistor, Q5 - third transistor, Q7 - first transistor, Q13 - fourth transistor, 100 - light-emitting unit, 200 - battery, 300 - charging interface, 400 - control chip, 500 - temperature detection component. Specific embodiments

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the following further details the present application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more, unless otherwise specifically defined.

[0042] It should be noted that as a device that utilizes the principle of light therapy for medical treatment or beauty, light therapy instruments have been widely used in many fields. However, traditional light therapy instruments often have some limitations in circuit design, especially in power management and charging efficiency. Traditional designs usually adopt a centralized charging control strategy, that is, all batteries 200 are charged through a unified charging interface 300 and a charging control module. Although this design simplifies the circuit structure, it has obvious limitations. First of all, due to the differences in the charging characteristics and states of different batteries 200, it is difficult to precisely control each battery 200 in centralized charging, which easily leads to overcharging or undercharging of some batteries 200, affecting the overall performance and lifespan of the battery 200 group.

[0043] Secondly, when the number of batteries 200 is relatively large, the charging efficiency of centralized charging will be limited. Because the charging current and voltage of all batteries 200 need to be distributed and regulated through the same control module, this will increase the control complexity and energy loss. Moreover, as users' requirements for the performance of light therapy instruments, especially in terms of battery life and charging speed, continue to increase, the traditional design has been difficult to meet market demands.

[0044] Therefore, based on this, this application has improved the circuit structure of the relevant light therapy instrument and the light therapy instrument.

[0045] Please refer to Figure 1 and Figure 2 , Figure 1 which shows a schematic diagram of the framework structure of the circuit structure of the light therapy instrument provided in this embodiment. Figure 2The schematic diagram of the circuit structure of the light therapy instrument provided in this embodiment is shown. The circuit structure of a light therapy instrument in this embodiment includes a light emitting unit 100, a battery 200, a charging interface 300, and at least two control chips 400. The light emitting unit 100 is used for emitting light; the number of batteries 200 is at least two, and at least two batteries 200 are connected in parallel and then commonly connected to the light emitting unit 100 to supply power to the light emitting unit 100; the charging interface 300 is used for connecting to an external power source; the control chip 400 is used for controlling the charging interface 300 to supply power to the battery 200. At least two control chips 400 are connected to at least two batteries 200 in a one-to-one correspondence, at least two control chips 400 are connected to the charging interface 300, and charge the battery 200 through the charging interface 300.

[0046] It should be explained that the light therapy instrument can be products such as a light therapy mask, a light therapy pad, and a face patch. The light emitting unit 100 can be used to emit light of a specific wavelength to achieve the light therapy effect. At least two batteries 200 are connected in parallel to form a battery 200 group to provide stable power support for the light emitting unit 100. The charging interface 300 is used for connecting to an external power source to provide a charging service for the battery 200 group. The charging interface 300 can be a Type-C interface. Each control chip 400 is responsible for monitoring and managing the charging status of the corresponding battery 200.

[0047] It can be understood that at least two batteries 200 connected in parallel not only improve the reliability of power supply, but also enable other batteries 200 to continue working when a single battery 200 fails, ensuring the continuous operation of the light therapy instrument. By introducing the control chip 400, the independent control and management of the battery 200 are realized, improving the accuracy and intelligent level of battery 200 management. Precise battery 200 management and balanced charging strategy contribute to extending the service life of the battery 200 and reducing the user's usage cost.

[0048] In the current instrument, even if there are multiple batteries 200, a single control chip 400 is used to manage the charging of multiple batteries 200, which will result in unbalanced charging between different batteries 200. In this application, a separate control chip 400 is equipped for each battery 200 to manage the charging, so as to achieve precise management of the charging of multiple batteries 200, which is beneficial to reducing the problem of unbalanced charging of multiple batteries 200, and further beneficial to improving the performance of the light therapy instrument.

[0049] In some embodiments, such as Figure 2 , the number of batteries 200 is two, Figure 2 BAT1+ and BAT2+ in [[ ]] respectively represent one battery 200. USB-5V-IN2 is the signal input by the charging interface 300. Both U1 and U2 are control chips 400.

[0050] In some embodiments of the present application, please continue to refer to Figure 2 and refer to Figure 3 , Figure 3 which shows a schematic framework diagram of the circuit structure of the light therapy instrument provided in this embodiment; Figure 2 In [reference], NTC1- and NTC1+ form a temperature detection component 500, and NTC2- and NTC2+ form another temperature detection component 500. The circuit structure of this embodiment further includes at least two temperature detection components 500, and the at least two temperature detection components 500 are arranged in one-to-one correspondence with at least two batteries 200, and each temperature detection component 500 is configured to detect the temperature of the corresponding battery 200; the temperature detection component 500 is configured to send a first detection signal when the temperature of the battery 200 exceeds a preset threshold, and the control chip 400 is configured to control the on / off between the charging interface 300 and the battery 200 according to the first detection signal.

[0051] It should be explained that the "temperature detection component 500" is a sensor component that can sense and measure the temperature of an object (here it is the battery 200). It usually has the characteristics of high precision, high sensitivity and fast response, and can monitor the temperature change of the battery 200 in real time during operation. "Arranged in one-to-one correspondence" means that each battery 200 is equipped with an independent temperature detection component 500. This design ensures that the temperature of each battery 200 can be monitored separately and accurately, thereby improving the safety and reliability of the entire battery 200 group. The temperature detection component 500 is installed at a position close to the battery 200 so as to be able to more directly and quickly sense the temperature change of the battery 200. This layout helps to reduce the delay and error of temperature measurement and improve the accuracy of temperature detection. The "preset threshold" is a preset temperature value used to determine whether the battery 200 is within a safe operating temperature range. When the temperature of the battery 200 exceeds this threshold, it is considered that the battery 200 may be in an overheated state and there is a safety hazard.

[0052] It can be understood that when it is detected that the temperature of the battery 200 is higher than the preset threshold, the charging of the battery 200 is switched through the control chip 400 to prevent the charging hazard caused by the overheating of the battery 200.

[0053] In some embodiments, the temperature detection component 500 is a thermistor.

[0054] In some embodiments of the present application, please refer to Figure 4 and Figure 5 , Figure 4 which shows a schematic diagram of the circuit structure of the main control unit provided in this embodiment, Figure 5The circuit structure diagram of the power detection unit provided in this embodiment is shown. In this embodiment, the battery 200BAT1+ is taken as an example. The circuit structure of this embodiment further includes a power detection unit and a main control unit; the power detection unit includes a first resistor R50 and a second resistor R49 connected in series, the other end of the first resistor R50 is grounded, and the other end of the second resistor R49 is connected to the battery 200; the signal output end of the power detection unit is disposed between the first resistor R50 and the second resistor R49; the main control unit is configured to receive a first output signal from the signal output end of the power detection unit, obtain the power of the battery 200 according to the intensity of the first output signal, and output a first control signal when the power reaches a preset power, and the first control signal is used to drive the control chip 400 to control the charging interface 300 to be disconnected from the battery 200.

[0055] It should be noted that the power detection unit is composed of two resistors (the first resistor R50 and the second resistor R49) connected in series to form a voltage division circuit. This design is used to measure the voltage or power of the battery 200. Since the voltage information of the battery 200 can be safely obtained through voltage division without directly connecting to the positive and negative electrodes of the battery 200. The main control unit is the "brain" of the entire circuit system. It is responsible for receiving the first output signal from the signal output end of the power detection unit (i.e., the voltage value in the voltage division circuit), and judging the power of the battery 200 according to the intensity of this signal (i.e., the level of the voltage value). When the power of the battery 200 reaches the preset power (such as full charge), the main control unit will output a first control signal. This control signal is an electrical signal used to drive the control chip 400 to perform a specific operation - that is, to control the charging interface 300 to be disconnected from the battery 200 to prevent overcharging of the battery 200 and protect the safety of the battery 200 and the device.

[0056] In some embodiments of the present application, please refer to Figure 6 , Figure 6 The circuit structure diagram of the input detection unit provided in this embodiment is shown. The circuit structure further includes an input detection unit. The input detection unit includes a third resistor R48 and a fourth resistor R35 connected in series. The other end of the third resistor R48 is grounded, and the other end of the fourth resistor R35 is connected to the charging interface 300; the signal output end of the input detection unit is disposed between the third resistor R48 and the fourth resistor R35; the main control unit is further configured to receive a second output signal from the signal output end of the input detection unit and obtain the input voltage value of the charging interface 300 according to the second output signal.

[0057] It should be noted that, similar to the principle of the power detection unit, the input detection unit is formed by connecting the third resistor R48 and the fourth resistor R35 in series with each other to form a voltage dividing circuit for measuring the input voltage of the charging interface 300. When there is an external power input to the charging interface 300, this voltage dividing circuit can reflect the magnitude of the input voltage. After obtaining the information of the battery 200 power and the input voltage of the charging interface 300, the main control unit can comprehensively utilize this information to make more comprehensive control decisions. For example, if it is detected that the input voltage of the charging interface 300 is too high or too low, the main control unit may control the charging interface 300 to disconnect to protect the battery 200 and the device from damage.

[0058] In some embodiments of the present application, please refer to Figure 7 , Figure 7 which shows a schematic circuit diagram of the anti-backflow unit provided in this embodiment. In this embodiment, taking the battery 200BAT1+ as an example, an anti-backflow unit is provided between each battery 200 and the light-emitting unit 100; wherein, the anti-backflow unit includes a first switch element, and the first switch element is used to control the on / off between the battery 200 and the light-emitting unit 100 according to the second control signal of the main control unit.

[0059] It should be noted that the first switch element can be an electronic switch (such as MOSFET, IGBT, etc.) or a mechanical switch, specifically depending on the design requirements and cost considerations of the circuit. The main function of the first switch element is to control the on / off between the battery 200 and the light-emitting unit 100 according to the second control signal of the main control unit. When the main control unit determines that it is necessary to disconnect the connection between the battery 200 and the light-emitting unit 100 (for example, during the charging process of the battery 200, when the power of the battery 200 is too low to support the operation of the light-emitting unit 100, or when the battery 200 is removed), it will send a second control signal to the first switch element to make it disconnect, thereby preventing current backflow.

[0060] It can be understood that for an instrument with two or more batteries 200, it is easy for the current of the light-emitting unit 100 to backflow into the battery 200 that does not participate in power supply. However, in this embodiment, the battery 200 that does not participate in power supply is disconnected by the first switch element to prevent current backflow.

[0061] In some embodiments of the present application, please continue to refer to Figure 5 , the first switch element of this embodiment includes a first transistor Q7, a second transistor Q3, and a third transistor Q5. The first transistor Q7 and the second transistor Q3 are connected in series between the battery 200 and the light-emitting unit 100. One end of the third transistor Q5 is connected to the control electrodes of the first transistor Q7 and the second transistor Q3, and the other end is grounded; the control electrode of the third transistor Q5 is connected to the main control unit.

[0062] In some embodiments of the present application, please continue to refer to Figure 7 , the first transistor Q7 and the second transistor Q3 are MOS transistors, and the third transistor Q5 is a bipolar transistor; wherein, the source electrode of the first transistor Q7 is connected to the source electrode of the second transistor Q3. Specifically, the first transistor Q7 and the second transistor Q3 are PMOS transistors.

[0063] In some embodiments of the present application, please refer to Figure 8 , Figure 8 which shows a schematic circuit structure diagram of the display unit provided in this embodiment. The circuit structure of this embodiment includes a display unit, and the display unit is used to display the charging times of the battery 200; wherein, the display unit includes a plurality of LED lights, the plurality of LED lights correspond to multiple digits of the charging times, and the blinking times of the LED lights are the numerical values of the corresponding digits.

[0064] Exemplarily, in the shutdown state, short press the power button 5 times within 3 seconds and then long press the power button for more than 5 seconds to enter the query charging record mode. Three LED lights can be set, namely green, blue and orange. Green represents the percentile, blue represents the tenth place, and orange represents the unit place. Then blink the corresponding LED once every 0.5 seconds to indicate +1. For example: if the charging times is 531 times, then the display logic should be: blink the green LED 5 times first, then blink the blue LED 3 times, and then blink the orange LED 1 time. The highest record is 999 times. After it is full, the record times will no longer increase.

[0065] In some embodiments, timing starts when the charging cable is plugged in and ends when the charging cable is unplugged. Each charging time from plugging in the charging cable to unplugging it exceeding 10 minutes is considered a valid charging process, and the record is incremented by 1, otherwise the record is discarded. After the LED blinking is completed, the device automatically returns to the shutdown and sleep state.

[0066] In some embodiments of the present application, please refer to Figure 9 , Figure 9 which shows a schematic circuit structure diagram of the current detection unit provided in this embodiment. Figure 7 Taking the LED BI in [[ ]] as the current detection signal and the blue light-emitting component in the light-emitting unit 100 as the LED B, the current detection unit of this embodiment can also be applied to the red light-emitting component and the infrared light-emitting component. The circuit structure of this embodiment includes a current detection unit, and the current detection unit is used to detect the current output to the light-emitting unit 100; the current detection unit includes a detection resistor R21 and a comparator U6. One end of the detection resistor R21 is grounded, and the other end is connected to the light-emitting unit 100. The positive input terminal and the negative input terminal of the comparator U6 are connected to both ends of the detection resistor R21, and the output terminal of the comparator U6 is used to output a current detection signal, and the current detection signal is used to characterize the current value of the light-emitting unit 100.

[0067] It should be noted that one end of the detection resistor R21 is grounded (i.e., connected to the negative pole or ground potential of the circuit), and the other end is connected to the positive or negative pole of the light-emitting unit 100 (specifically depending on the circuit design), so as to form a current loop when the light-emitting unit 100 works, and a voltage drop is generated through the detection resistor R21. The positive input and negative input of the comparator U6 are respectively connected to both ends of the detection resistor R21, used to detect the voltage drop on the detection resistor R21, and compare it with a preset reference voltage. The output pole of the comparator U6 is used to output a current detection signal, which characterizes whether the current value of the light-emitting unit 100 is within the normal range. When the light-emitting unit 100 works, a certain voltage drop is generated through the detection resistor R21. This voltage drop is captured by the comparator U6 and compared with the preset reference voltage. If the voltage drop (i.e., the current value) is within the preset range, the comparator U6 may output a signal indicating normal; if the voltage drop exceeds the preset range (i.e., the current is too large or too small), the comparator U6 outputs a signal indicating abnormality.

[0068] In some embodiments, when the current value of the light-emitting unit 100 exceeds the preset value, the main control unit controls the light-emitting unit 100 to turn off. In this embodiment, the main control unit outputs the PWMB signal to control the fourth transistor Q13 to turn off.

[0069] In some embodiments of the present application, the light-emitting unit 100 includes one or more of a blue light-emitting component, a red light-emitting component, and an infrared light-emitting component; each light-emitting component is provided with a corresponding current detection unit.

[0070] In some embodiments of the present application, please refer to Figure 10 , Figure 10 which shows a schematic circuit diagram of the power-on and -off unit provided in this embodiment. The circuit structure of this embodiment further includes a power-on and -off unit. Through the power-on and -off circuit of this embodiment, it can be realized that when the button is short-pressed in the shutdown state, only the battery 200 power is displayed, and the light is turned off and enters the sleep state after short-pressing again or after 3 minutes; and it can be realized that when the button is long-pressed for 1.2 seconds in the shutdown state, the device is powered on. And it can be realized that the red light therapy mode is default after power-on, and it is switched to red + infrared after short-pressing or after 5 minutes (at the beginning of the step, all LEDs flash twice in pink within 1 second), and it is switched to blue light after short-pressing again or after 5 minutes, and it is powered off after short-pressing again or after 5 minutes. And it can be realized that when the device is in the power-on state, at any time, when the button is long-pressed for 1.2 seconds, the device is powered off.

[0071] Furthermore, in order to better the circuit structure of the light therapy instrument in any of the above embodiments, on the basis of the above circuit structure, the present application further provides a light therapy instrument, including the above circuit structure.

[0072] In the above embodiments, the descriptions of the various embodiments each have their own emphasis. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0073] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only an example and does not constitute a limitation to this application. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are proposed in this application, so such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of this application.

[0074] At the same time, this application uses specific terms to describe the embodiments of this application. Such as "one embodiment", "an embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

[0075] Similarly, it should be noted that, in order to simplify the expression of the disclosure of this application and thus help the understanding of one or more utility model embodiments, in the previous description of the embodiments of this application, sometimes multiple features are merged into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the features required by the subject matter of this application are more than those mentioned in the claims. In fact, the features of the embodiments are fewer than all the features of the single embodiments disclosed above.

[0076] The above-described embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. The circuit structure of a light therapy instrument, characterized in that, Comprising: A light-emitting unit for emitting light; Batteries, where the number of the batteries is at least two, and at least two of the batteries are connected in parallel and commonly connected to the light-emitting unit to supply power to the light-emitting unit; A charging interface for connecting to an external power source; At least two control chips, where the control chips are used to control the charging interface to supply power to the batteries, and at least two of the control chips are connected to at least two of the batteries in a one-to-one correspondence, at least two of the control chips are connected to the charging interface, and charge the batteries through the charging interface.

2. The circuit structure of the light therapy instrument according to claim 1, characterized in that, The circuit structure further includes at least two temperature detection components, at least two of the temperature detection components are arranged in a one-to-one correspondence with at least two of the batteries, and each of the temperature detection components is used to detect the temperature of the corresponding battery; The temperature detection component is configured to issue a first detection signal when the temperature of the battery exceeds a preset threshold, and the control chip is used to control the on / off between the charging interface and the battery according to the first detection signal.

3. The circuit structure of the phototherapy instrument according to claim 1, wherein, The circuit structure further includes: A power detection unit, where the power detection unit includes a first resistor and a second resistor connected in series, the other end of the first resistor is grounded, and the other end of the second resistor is connected to the battery; the signal output end of the power detection unit is arranged between the first resistor and the second resistor; A main control unit for receiving a first output signal from the signal output end of the power detection unit, obtaining the power of the battery according to the intensity of the first output signal, and outputting a first control signal when the power reaches a preset power, where the first control signal is used to drive the control chip to control the disconnection between the charging interface and the battery.

4. The circuit structure of the phototherapy instrument according to claim 3, characterized in that, The circuit structure further includes an input detection unit, where the input detection unit includes a third resistor and a fourth resistor connected in series, the other end of the third resistor is grounded, and the other end of the fourth resistor is connected to the charging interface; the signal output end of the input detection unit is arranged between the third resistor and the fourth resistor; The main control unit is further used to receive a second output signal from the signal output end of the input detection unit and obtain the input voltage value of the charging interface according to the second output signal.

5. The circuit structure of the phototherapy instrument according to claim 3, characterized in that, An anti-backflow unit is arranged between each of the batteries and the light-emitting unit; Wherein, the anti-backflow unit includes a first switching component, and the first switching component is used to control the on / off between the battery and the light-emitting unit according to a second control signal of the main control unit.

6. The circuit structure of the light therapy instrument according to claim 5, characterized in that, The first switching component includes a first transistor, a second transistor, and a third transistor. The first transistor and the second transistor are connected in series between the battery and the light-emitting unit. One end of the third transistor is connected to the control electrodes of the first transistor and the second transistor, and the other end is grounded; the control electrode of the third transistor is connected to the main control unit.

7. The circuit structure of the light therapy instrument according to claim 6, characterized in that, The first transistor and the second transistor are MOS transistors, and the third transistor is a triode; wherein, the source electrode of the first transistor is connected to the source electrode of the second transistor.

8. The circuit structure of the phototherapy instrument according to any one of claims 1 to 7, characterized in that, The circuit structure includes a display unit for displaying the number of charging times of the battery; wherein, the display unit includes a plurality of LED lights, and the plurality of LED lights correspond to the multiple digits of the charging times, and the number of flashes of the LED lights is the value of the corresponding digit.

9. The circuit structure of the light therapy instrument according to any one of claims 1 to 7, characterized in that, The circuit structure further includes a current detection unit for detecting the current output to the light-emitting unit; The current detection unit includes a detection resistor and a comparator. One end of the detection resistor is grounded, and the other end is connected to the light-emitting unit. The positive input terminal and the negative input terminal of the comparator are respectively connected to both ends of the detection resistor. The output terminal of the comparator is used for outputting a current detection signal, and the current detection signal is used to characterize the current value of the light-emitting unit; and / or, the light-emitting unit includes one or more of a blue light-emitting component, a red light-emitting component, and an infrared light-emitting component.

10. A light therapy instrument, characterized in that, Comprising the circuit structure according to any one of claims 1 to 9.

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