Infrared body temperature detection battery multifunction charger

Abstract

The utility model relates to mobile phone charger technical field discloses an infrared body temperature detection storage battery multifunctional charger, contains charger casing, charging control unit, battery management unit, infrared ranging unit and body temperature detection unit. The casing divides front shell, middle shell, back shell, and the middle shell is fixed with the back shell screw, and the front shell is fixed with the middle shell buckle. Charging control unit is installed in the back shell, and the conversion electric energy is regulated and each unit is controlled. The battery management unit is installed in the front shell, and is connected with the charging control unit and the storage battery, and provides stable current voltage for the mobile phone. The infrared ranging unit is connected with the charging control unit, contains infrared emission, receiving module and ranging processing chip. The body temperature detection unit is installed in the middle shell side mounting groove, is connected with the charging control unit, contains infrared body temperature sensor, body temperature signal conditioning circuit, body temperature processing chip and display module. The charger integrates charging, storage battery power supply, infrared ranging and body temperature detection function, reduces the equipment carrying burden, and adapts to the demand of multiple scenes.

Description

Technical Field

[0001] This utility model belongs to the field of mobile phone charger technology, specifically relating to a multi-functional charger for infrared body temperature detection batteries. Background Technology

[0002] With the widespread adoption of mobile smart devices, smartphones have become core tools for people's daily work, social interactions, and lives, leading to a significant increase in their battery life requirements. As an essential accessory, smartphone chargers have consistently evolved around convenience and practicality. While current mainstream smartphone chargers have achieved basic upgrades such as fast charging and multiple output interfaces, they still have significant limitations in scenarios without fixed power supply, such as outdoor activities, emergency rescues, and fieldwork. Users need to carry additional power banks (batteries) to solve battery life issues, and also require separate devices such as infrared rangefinders and body temperature detectors to meet specific needs (e.g., outdoor distance measurement and route planning, daily body temperature monitoring in public places or at home). Carrying multiple devices not only increases the burden of travel but also easily leads to problems such as forgotten devices and insufficient power, making it difficult to meet the modern user's demand for integrated tools.

[0003] With the maturation of infrared sensing technology, infrared functionality has been gradually applied in the consumer electronics field. For example, some devices integrate infrared ranging for spatial perception or infrared body temperature detection for health monitoring services. However, in current technologies, infrared ranging and body temperature detection functions are mostly integrated separately into professional instruments or specific smart devices (such as smartwatches and dedicated rangefinders), resulting in extremely low integration with mobile phone chargers. A few chargers with additional functions are limited to basic power display or single-interface expansion, failing to systematically integrate battery power supply, infrared ranging, body temperature detection, and charging functions. This leads to limited device functionality, failing to simultaneously meet users' diverse needs for charging, emergency power supply, distance measurement, and health monitoring.

[0004] From a technical application perspective, existing charging devices with rechargeable batteries (such as power banks) are designed with energy storage and release in mind, lacking sophisticated management of the charging process. Most products do not have temperature compensation mechanisms for battery performance changes under different ambient temperatures, which can easily lead to decreased charging efficiency at low temperatures and increased safety risks at high temperatures. At the same time, these devices do not have a complete battery protection and energy distribution module, and during the switching process between charging a mobile phone and replenishing its own battery, the device is easily damaged or the battery life is shortened due to current and voltage fluctuations.

[0005] In view of this, we propose a multi-functional charger for infrared body temperature detection batteries to solve the above problems. Utility Model Content

[0006] The present invention aims to solve the technical problem in the prior art where the charger is functionally separated from devices such as infrared ranging and body temperature detection, or only has simple extended functions, and cannot meet the requirements of integration.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-functional charger for infrared body temperature detection batteries, comprising:

[0009] The charger housing includes a front shell, a middle shell, and a rear shell. The middle shell and the rear shell are fixed together by screws, and the front shell and the middle shell are fastened together.

[0010] The charging control unit is installed in the rear housing and is used to condition, convert and manage the input electrical energy. Combined with temperature compensation, it provides stable power to the battery management unit and output unit, and coordinates the operation of each unit.

[0011] The battery management unit, as the core power supply module of the charger, is used to provide stable charging current and voltage for the mobile phone. The battery management unit is installed in the front shell and electrically connected to the charging control unit. The battery management unit is also electrically connected to the battery.

[0012] An infrared ranging unit is electrically connected to a charging control unit. The infrared ranging unit includes an infrared emitting module, an infrared receiving module corresponding to the infrared emitting module, and a ranging processing chip electrically connected to the infrared emitting module and the infrared receiving module respectively. The ranging processing chip is also electrically connected to a charging management chip.

[0013] The body temperature detection unit is installed in the mounting slot on the side of the middle shell and is electrically connected to the charging control unit. The body temperature detection unit includes an infrared body temperature sensor, a body temperature signal conditioning circuit electrically connected to the infrared body temperature sensor, a body temperature processing chip electrically connected to the body temperature signal conditioning circuit, and a display module electrically connected to the body temperature processing chip. The body temperature detection unit is electrically connected to the charging control unit.

[0014] Preferably, the charging control unit includes an input power conditioning circuit, a DC-DC conversion module, a charging management chip, and a constant current control circuit connected in sequence, and also includes a constant voltage control circuit connected in parallel with the constant current control circuit, as well as a temperature compensation unit that is electrically connected to the charging management chip, the constant current control circuit, and the constant voltage control circuit respectively. The charging control unit is also electrically connected to the output unit and the input unit respectively.

[0015] Preferably, the battery management unit includes a battery monitoring module, a charging control module, a protection module, and an energy conversion and distribution module. The battery monitoring module monitors the battery's voltage, current, and temperature parameters in real time and transmits the data to the charging control module. The charging control module regulates the charging process based on this data and a preset charging strategy, and transmits charging control commands to the energy conversion and distribution module. The protection module monitors the operating status of each part of the battery management unit in real time. Once it detects overcharging, over-discharging, overcurrent, or short-circuit abnormalities, it will quickly cut off the relevant circuits to protect the battery. The energy conversion and distribution module receives commands from the charging control module and rationally converts and distributes the electrical energy delivered by the charging control unit to charge the battery and provide stable power to the output unit.

[0016] Preferably, the rear side of the middle shell has four perforated mounting blocks at the four corners, and the inner wall of the rear shell has four threaded post I at the four corners. The charging control unit is placed inside the middle shell and located in front of the perforated mounting blocks. The charging control unit, the middle shell, and the rear shell are fixed together by screws that pass through the mounting holes I at the four corners of the battery management unit, the perforated mounting blocks, and are screwed to the threaded post I.

[0017] Preferably, a sealing gasket I is provided between the front shell and the middle shell, and a sealing gasket II is provided between the middle shell and the rear shell.

[0018] Preferably, the detection probe of the infrared body temperature sensor on the body temperature detection unit is attached to the housing of the body temperature detection unit, and the housing of the body temperature detection unit is provided with a fastening groove for attaching the detection probe.

[0019] Preferably, the inner wall of the front cover is provided with a positioning groove for engaging and positioning the battery.

[0020] Preferably, the inner wall of the front cover is provided with threaded post II, and the battery management unit is fixed to the front cover by screws that pass through the mounting holes II at the four corners of the battery management unit and are screwed to the threaded post II.

[0021] Preferably, the inner wall surface of the middle shell near the front shell is provided with a fastening position, and the front shell is provided with a fastening block that cooperates with the fastening position to fasten together. The front shell and the middle shell are fastened and sealed together by the fastening position and the fastening block.

[0022] Preferably, the input unit is located on the side opposite to the body temperature detection unit; the output unit is embedded in the front housing, which also has a switch button electrically connected to the charging control unit.

[0023] Compared with the prior art, the technical effects and advantages of this utility model are:

[0024] This invention effectively solves the problem of separating the charger from devices such as the infrared rangefinder, body temperature detector, and battery in existing technologies. It systematically integrates four core functions: charging, emergency battery power supply, infrared ranging, and infrared body temperature detection. Users no longer need to carry multiple separate devices, reducing the burden of carrying them when traveling and avoiding situations such as omissions or insufficient power caused by scattered devices. It is perfectly adapted to diverse scenarios such as outdoor work, emergency rescue, and daily household use, meeting the needs of modern users for integrated tools.

[0025] Existing charging devices with batteries often lack temperature compensation mechanisms, making them susceptible to problems such as decreased charging efficiency at low temperatures and increased safety risks at high temperatures, and their battery protection functions are also inadequate. In contrast, the charging control unit of this invention is equipped with a temperature compensation unit that can dynamically adjust charging parameters, while the battery management unit has a comprehensive protection module that can prevent overcharging, over-discharging, overcurrent, short circuits, and other abnormalities in real time. This ensures both charging stability and efficiency, and extends the lifespan of both the battery and the device being charged.

[0026] Existing chargers mostly have a single-shell structure, which is inconvenient for disassembly and maintenance, and has poor sealing, making them unsuitable for complex environments. This utility model adopts a three-section structure of front shell, middle shell, and rear shell. The front shell and middle shell are fixed together by snap-fit, facilitating later inspection or replacement of the battery and battery management unit; the middle shell and rear shell are fixed together by screws to ensure a stable connection. At the same time, sealing gaskets are set between the front shell and the middle shell, and between the middle shell and the rear shell, which can effectively prevent dust and moisture from entering, making it suitable for complex environments such as humid and dusty environments, and extending the overall service life of the equipment.

[0027] Some existing multi-functional chargers have unreasonable interface layouts, which can easily lead to interface interference or inconvenience in operation. This invention, however, places the input unit on the side opposite to the body temperature detection unit, avoiding interference or collision with the temperature detection unit when plugging or unplugging the input cable. The output unit is embedded in the front shell, conforming to users' daily charging habits, allowing for quick connection without flipping the device. The front shell also features a switch button electrically connected to the charging control unit, allowing users to start / stop the device or switch function modes with a single button press. This significantly reduces the operational threshold and improves ease of use, especially in low-light outdoor environments. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is an exploded view of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the shell in this utility model;

[0031] Figure 4This is a front view of the shell of this utility model;

[0032] Figure 5 This is a schematic diagram of the front shell of this utility model;

[0033] Figure 6 This is a connection block diagram of the infrared body temperature detection battery multi-functional charger of this utility model;

[0034] Figure 7 This is a structural block diagram of the charging control unit of this utility model;

[0035] Figure 8 This is a structural block diagram of the battery management unit of this utility model;

[0036] Figure 9 This is a structural block diagram of the infrared ranging unit of this utility model;

[0037] Figure 10 This is a structural block diagram of the body temperature detection unit of this utility model.

[0038] In the picture:

[0039] 1. Charger housing; 11. Front shell; 12. Middle shell; 13. Rear shell; 14. Mounting groove; 15. Mounting block with hole; 16. Threaded hole post I; 17. Mounting hole I; 18. Sealing gasket I; 19. Sealing gasket II; 110. Snap groove; 111. Positioning groove; 112. Threaded hole post II; 113. Mounting hole II; 114. Snap position; 115. Snap block; 116. Switch button;

[0040] 2. Charging control unit; 21. Power conditioning circuit; 22. DC-DC conversion module; 23. Charging management chip; 24. Constant current control circuit; 25. Constant voltage control circuit; 26. Temperature compensation unit;

[0041] 3. Output unit;

[0042] 4. Input unit;

[0043] 5. Battery Management Unit; 51. Battery Monitoring Module; 52. Charging Control Module; 53. Protection Module; 54. Energy Conversion and Distribution Module;

[0044] 6. Storage battery;

[0045] 7. Infrared ranging unit; 71. Infrared transmitting module; 72. Infrared receiving module; 73. Ranging processing chip;

[0046] 8. Body temperature detection unit; 81. Infrared body temperature sensor; 82. Body temperature signal conditioning circuit; 83. Body temperature processing chip; 84. Display module; 85. Detection probe. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] The following combination Figures 1 to 10 This application will be described in further detail.

[0049] This application discloses a multi-functional charger for an infrared body temperature detection battery 6, including a charger housing 1, a charging control unit 2, a battery management unit 5, an infrared ranging unit 7, an input unit 4, an output unit 3, and a body temperature detection unit 8. The battery management unit 5 is electrically connected to the battery 6, the charging control unit 2 is electrically connected to the battery management unit 5, the infrared ranging unit 7 is electrically connected to the charging control unit 2, and the body temperature detection unit 8 is electrically connected to the charging control unit 2. The input unit 4 is located on the side opposite to the body temperature detection unit 8. The output unit 3 is embedded in the front housing 11, and a switch button 116 electrically connected to the charging control unit 2 is also installed on the front housing 11.

[0050] This multi-functional charger for an infrared body temperature detection battery 6 uses the charging control unit 2 as its core hub, connecting the charger housing 1, battery management unit 5, infrared ranging unit 7, body temperature detection unit 8, input unit 4, and output unit 3 in series to form an integrated system for power management and multi-scenario functions. Specifically, the battery management unit 5 is electrically connected to the battery 6, responsible for the charging and discharging management and power distribution of the battery 6; the charging control unit 2 is bidirectionally electrically connected to the battery management unit 5, providing it with stable power and coordinating its operation; the infrared ranging unit 7 and body temperature detection unit 8 are both directly electrically connected to the charging control unit 2, which supplies them with operating power and transmits data signals.

[0051] In terms of external layout, the input unit 4 is deliberately positioned on the side opposite to the body temperature detection unit 8. This design effectively prevents the cable from colliding with the detection probe 85 of the body temperature detection unit 8 when plugging or unplugging the input cable, and also prevents weak electromagnetic interference near the input interface from affecting the accuracy of body temperature detection, ensuring the accuracy of the detection data. The output unit 3 (such as a USB-A or Type-C charging port) is embedded in the front shell 11, adapting to the user's daily operating habits for charging mobile phones. It allows for quick connection to the mobile phone without flipping the device, improving ease of use. The front shell 11 is also equipped with a switch button 116 electrically connected to the charging control unit 2. Users can start and stop the charger and switch function modes (such as switching between charging mode / infrared ranging mode / body temperature detection mode) with a single button, avoiding the cumbersome operation of multiple buttons. Especially in low-light outdoor scenarios, single-button control is easier to operate blindly, lowering the barrier to entry for users.

[0052] The series connection structure of the core unit ensures the stability of power transmission and signal interaction, avoiding interference between functional modules; the user-friendly layout of external interfaces and control buttons not only protects precision detection components, but also conforms to user habits, improving ease of operation and adaptability to various scenarios, especially suitable for complex use environments such as outdoor and emergency situations.

[0053] The charger housing 1 includes a front shell 11, a middle shell 12, and a rear shell 13. The middle shell 12 and the rear shell 13 are fixed by screws, and the front shell 11 and the middle shell 12 are fastened together. A sealing gasket I 18 is provided between the front shell 11 and the middle shell 12, and a sealing gasket II 19 is provided between the middle shell 12 and the rear shell 13. The inner wall of the front shell 11 is provided with a positioning groove 111 for fastening and positioning the battery 6.

[0054] The rear side of the middle shell 12 has four perforated mounting blocks 15 at its four corners, and the inner wall of the rear shell 13 has four threaded post I 16 at its four corners. The charging control unit 2 is placed inside the middle shell 12 and located in front of the perforated mounting blocks 15. The charging control unit 2, the middle shell 12, and the rear shell 13 are fixed together by screws that pass through the mounting holes I 17 at the four corners of the battery management unit 5, the perforated mounting blocks 15, and are screwed to the threaded post I 16.

[0055] The inner wall of the front cover 11 is provided with threaded post II 112. The battery management unit 5 is fixed to the front cover 11 by screws that pass through the mounting holes II 113 at the four corners of the battery management unit 5 and are screwed to the threaded post II 112.

[0056] The inner wall surface of the middle shell 12 near the front shell 11 is provided with a fastening position 114, and the front shell 11 is provided with a fastening block 115 that cooperates with the fastening position 114 to fasten together. The front shell 11 and the middle shell 12 are fastened and sealed together by the fastening position 114 and the fastening block 115.

[0057] The charger housing 1 adopts a three-section splicing structure consisting of a front shell 11, a middle shell 12, and a rear shell 13. Each shell is made of flame-retardant ABS material and is integrally injection molded, combining lightweight and impact resistance to protect the internal circuitry in everyday drop or crush scenarios. The middle shell 12 and the rear shell 13 are fixed with screws: the rear side of the middle shell 12 has a pre-drilled screw hole, and the corresponding position of the rear shell 13 has an internal threaded hole. The screw passes through the middle shell 12 and is screwed into the rear shell 13, forming a stable and rigid connection to prevent the rear shell 13 from loosening over long-term use. The front shell 11 and the middle shell 12 are fixed with a snap-fit ​​connection, which can be disassembled and assembled without tools, facilitating the later inspection or replacement of the battery 6 and battery management unit 5 inside the front shell 11.

[0058] A sealing gasket I 18 is installed between the front shell 11 and the middle shell 12, and a sealing gasket II 19 is installed between the middle shell 12 and the rear shell 13. Both gaskets are made of aging-resistant silicone rubber, and their dimensions are perfectly matched to the shell splicing surfaces to tightly fill the shell gaps. At the same time, the inner wall of the front shell 11 is provided with a positioning groove 111 that matches the shape of the battery 6. The inner wall of the positioning groove 111 is coated with soft silicone, which not only avoids the battery 6 from directly rubbing against the hard shell and causing scratches on the shell, but also firmly fixes the battery 6 in the groove through the elastic deformation of the silicone, preventing the battery 6 from shifting when the equipment shakes, and ensuring stable electrode contact between the battery 6 and the battery management unit 5.

[0059] The three-section structure balances stability and maintainability. Screw fastening ensures a reliable long-term connection between the rear shell 13 and the middle shell 12, while the snap-fit ​​design improves the efficiency of disassembling and assembling the front shell 11. The double sealing gasket design effectively prevents dust and moisture intrusion, making it suitable for humid (such as rainy outdoor) and dusty (such as construction site) environments, extending the equipment's service life. The combination of the positioning groove 111 and the silicone coating not only achieves precise positioning of the battery 6 but also provides buffer protection, preventing the battery 6 from detaching from the electrodes due to vibration and ensuring power supply stability.

[0060] The charging control unit 2 is installed inside the rear shell 13 and is used to condition, convert and manage the input electrical energy. Combined with temperature compensation, it provides stable power to the battery management unit 5 and the output unit 3, and coordinates the operation of each unit. The charging control unit 2 includes an input power conditioning circuit 21, a DC-DC conversion module 22, a charging management chip 23, and a constant current control circuit 24 connected in sequence. It also includes a constant voltage control circuit 25 connected in parallel with the constant current control circuit 24, and a temperature compensation unit 26 that is electrically connected to the charging management chip 23, the constant current control circuit 24, and the constant voltage control circuit 25, respectively. The charging control unit 2 is also electrically connected to the output unit 3 and the input unit 4, respectively.

[0061] The charging control unit 2 first filters and stabilizes the external input power through the input power conditioning circuit 21 to remove impurities and interference. Then, the DC-DC conversion module 22 converts the power into a voltage level suitable for subsequent modules. Subsequently, the charging management chip 23 coordinates and regulates the charging process, combined with the constant current control circuit 24 and the constant voltage control circuit 25 to achieve precise current and voltage management. At the same time, the temperature compensation unit 26 monitors the ambient and equipment temperature in real time and dynamically adjusts the charging parameters according to temperature changes. The advantages of this principle are that it can provide stable and suitable power to the battery management unit 5 and the output unit 3 through multi-stage power conditioning and conversion, avoiding damage to the equipment due to input power fluctuations. It can also solve the problems of low charging efficiency and high safety risks under different temperatures by using the temperature compensation mechanism. Furthermore, by coordinating the work of each unit, it can ensure reasonable power distribution when switching between functions such as charging, ranging, and body temperature detection, thereby improving the overall operational stability and safety of the equipment and adapting to complex temperature environments such as outdoor and emergency situations.

[0062] The battery management unit 5, as the core power supply module of the charger, provides a stable charging current and voltage for the mobile phone. The battery management unit 5 is installed inside the front casing 11 and electrically connected to the charging control unit 2. The battery management unit 5 includes a battery monitoring module 51, a charging control module 52, a protection module 53, and an energy conversion and distribution module 54. The battery monitoring module 51 monitors the voltage, current, and temperature parameters of the battery 6 in real time and transmits the data to the charging control module 52. Based on this data and a preset charging strategy, the charging control module 52 regulates the charging process and transmits charging control commands to the energy conversion and distribution module 54. The protection module 53 monitors the operating status of each part of the battery management unit 5 in real time. If overcharging, over-discharging, overcurrent, or short-circuit abnormalities are detected, it quickly cuts off the relevant circuits to protect the battery 6. The energy conversion and distribution module 54 receives commands from the charging control module 52 and rationally converts and distributes the electrical energy from the charging control unit 2 to charge the battery 6 and provide stable power to the output unit 3.

[0063] Based on the battery monitoring module 51, the battery management unit 5 captures key parameters such as voltage, current, and temperature of the battery 6 in real time and transmits them to the charging control module 52. The charging control module 52 generates control commands based on preset strategies, and the energy conversion and distribution module 54 executes the energy conversion and distribution. At the same time, the protection module 53 monitors the operating status throughout the process and immediately cuts off the circuit in case of overcharging, over-discharging, or other abnormalities. The advantage of this principle is that, through real-time monitoring and dynamic control, it can ensure a stable charging current and voltage for devices such as mobile phones, avoiding the impact of unstable power supply on device lifespan, and accurately control the charging and discharging process of the battery 6, extending the battery 6's lifespan. The presence of the protection module 53 significantly reduces the risk of safety accidents caused by electrical abnormalities, ensuring that the device can safely and reliably provide power to users in various scenarios such as outdoor emergency power supply and daily charging, meeting users' core requirement for stable power supply.

[0064] The infrared ranging unit 7 includes an infrared emitting module 71, an infrared receiving module 72 corresponding to the infrared emitting module 71, and a ranging processing chip 73 electrically connected to the infrared emitting module 71 and the infrared receiving module 72 respectively. The ranging processing chip 73 is also electrically connected to the charging management chip 23.

[0065] The infrared ranging unit 7 consists of an infrared emitting module 71 that emits infrared signals and an infrared receiving module 72 that receives signals reflected from the object being measured. Both are connected to a ranging processing chip 73. The ranging processing chip 73 calculates the time difference or phase difference between the emitted and received signals to obtain distance data. Simultaneously, the ranging processing chip 73 is electrically connected to the charging management chip 23 to obtain operating power and achieve data interaction. The advantage of this principle is that, leveraging the characteristics of infrared sensing technology, distance measurement can be completed quickly and accurately, meeting the needs of outdoor route planning, engineering surveying, and other scenarios. Furthermore, this unit is deeply integrated with the charging control unit 2, eliminating the need for additional independent power supply equipment, reducing the user's carrying burden. Data can also be efficiently transmitted through the charging control unit 2, ensuring timely feedback of ranging results, improving ease of use, and breaking the limitations of traditional rangefinders and chargers being separate, achieving functional integration.

[0066] The body temperature detection unit 8 is installed in the mounting groove 14 on the side of the middle shell 12, and the body temperature detection unit 8 is electrically connected to the charging control unit 2. The body temperature detection unit 8 includes an infrared body temperature sensor 81, a body temperature signal conditioning circuit 82 electrically connected to the infrared body temperature sensor 81, a body temperature processing chip 83 electrically connected to the body temperature signal conditioning circuit 82, and a display module 84 electrically connected to the body temperature processing chip 83. The detection probe 85 of the infrared body temperature sensor 81 on the body temperature detection unit 8 is fastened to the shell of the body temperature detection unit 8, and the shell of the body temperature detection unit 8 is provided with a fastening groove 110 for fastening the detection probe 85.

[0067] The body temperature detection unit 8 collects infrared radiation signals from the human body through an infrared body temperature sensor 81. The signal is amplified and filtered by a body temperature signal conditioning circuit 82 to remove interference signals before being transmitted to a body temperature processing chip 83. The chip analyzes and calculates the body temperature data, which is then displayed through a display module 84. Simultaneously, the unit is electrically connected to the charging control unit 2 to obtain power, and the sensor probe 85 is fixed to the unit housing via a slot 110. The advantages of this principle are that the application of infrared sensing technology allows for body temperature detection without contact with the human body, ensuring hygiene and preventing cross-infection, making it suitable for health monitoring scenarios such as public places and daily home use. The addition of the signal conditioning circuit improves the accuracy of the detection signal, ensuring reliable body temperature data. The display module 84 allows users to intuitively read the results, making operation convenient. The plug-in design with the charging control unit 2 and the fixed probe not only ensure stable power supply to the unit but also prevent probe loosening or damage, extending the device's lifespan. Furthermore, it eliminates the need for a separate body temperature detector, further enhancing the device's multi-functional integrated advantages.

[0068] The charging control unit 2 is based on the STM32L431RCT6 (main controller) and integrated with peripheral circuits. The input power conditioning circuit 21 is based on LM1117-3.3, SMBJ5.0CA, etc. The DC-DC conversion module 22 is MP2359. The charging management chip 23 is TP4056. The constant current control circuit 24 and constant voltage control circuit 25 rely on XC6206P332MR and TL431 respectively. The temperature compensation unit 26 is based on DS18B20. The output unit 3 is equipped with TE USB-A and JAE Type-C interfaces. The input unit 4 uses Molex Micro-USB and UJU Type-C interfaces. The battery 6 is a Samsung INR18650-35E lithium battery.

[0069] The selection of battery management modules focuses on safety and range. Battery management unit 5 is based on BQ27441 (fuel gauge) + peripheral protection circuit. Battery monitoring module 51 is based on BQ27441 and voltage divider resistor network. Charging control module 52 reuses STM32L431RCT6 and is equipped with G6K-2P-Y relay. Protection module 53 uses DW01 and AO3401. Energy conversion and distribution module 54 reuses MP2359 and is equipped with CD4052 multiplexer to comprehensively ensure the safety of battery charging and discharging and the rational distribution of power.

[0070] The selection of functional modules emphasizes integration and precision. The infrared ranging unit 7 is based on the VL53L0X sensor (integrating an infrared emitting module 71, an infrared receiving module 72, and a ranging processing chip 733). The body temperature detection unit 8 is based on the MLX90614 (infrared body temperature sensor 81) (integrating a body temperature signal conditioning circuit 82 and a body temperature processing chip 83). The display module 84 uses a 0.96-inch OLED screen, and the detection probe 85 uses an MLX90614 with a matching lens to meet the precision requirements of ranging and body temperature detection.

[0071] The charger uses the charging control unit 2 as its core hub. It first receives external power through the input unit 4, which is then pre-processed by the input power conditioning circuit 21, converted by the DC-DC conversion module 22, and regulated by the charging management chip 23. Combined with the constant current and constant voltage control circuit 25, it achieves refined power management. Simultaneously, the temperature compensation unit 26 dynamically adjusts parameters based on the ambient and equipment temperature to power the battery management unit 5 and the output unit 3. The battery management unit 5 obtains the real-time status of the battery 6 through the monitoring module, and the control module formulates charging and discharging strategies, the allocation module rationally distributes power, and the protection module 53 prevents electrical abnormalities. The infrared ranging unit 7 emits and receives infrared signals, and the processing chip calculates the distance data. The body temperature detection unit 8 collects human infrared signals through sensors, and after signal conditioning and chip processing, the display module 84 presents the body temperature result. All functional units are linked to the charging control unit 2, and mode switching is achieved through the switch button 116.

[0072] Compared to existing technologies, this charger solves the pain point of carrying multiple devices by integrating charging, battery power supply, infrared ranging, and body temperature detection functions. This eliminates the need to carry multiple separate devices, reducing travel burden and preventing the loss of devices or insufficient power. Regarding charging performance, existing devices often lack temperature compensation mechanisms, making them susceptible to environmental temperature fluctuations that can lead to low charging efficiency or safety risks. This charger, however, features a temperature compensation unit 26 and a comprehensive battery protection module 53, adaptable to different temperature environments, ensuring charging safety and efficiency, and extending the lifespan of both the battery and the device being charged.

[0073] In terms of structure and ease of use, existing chargers mostly have a single-shell structure, which is inconvenient to disassemble and maintain and has poor sealing. This charger adopts a three-section shell design. The front shell 11 and the middle shell 12 are snapped together for easy maintenance, and the middle shell 12 and the rear shell 13 are fixed with screws to ensure stability. The double sealing gaskets can also prevent dust and water, making it suitable for complex scenarios. At the same time, the layout of the input / output unit 3 and the control buttons is user-friendly, avoiding interface interference and conforming to user operating habits. Especially in special scenarios such as outdoors, the single-button control and convenient charging connection method greatly improve the ease of use.

[0074] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-functional charger for infrared body temperature detection batteries, characterized in that, include: The charger housing (1) includes a front shell (11), a middle shell (12) and a rear shell (13). The middle shell (12) and the rear shell (13) are fixed by screws, and the front shell (11) and the middle shell (12) are fastened together. The charging control unit (2) is installed in the rear shell (13) and is used to condition, convert and manage the input power. Combined with temperature compensation, it provides stable power to the battery management unit (5) and the output unit (3) and coordinates the operation of each unit. The battery management unit (5), as the core power supply module of the charger, is used to provide stable charging current and voltage for the mobile phone. The battery management unit (5) is installed in the front shell (11) and electrically connected to the charging control unit (2). The battery management unit (5) is electrically connected to the battery (6). The infrared ranging unit (7) is electrically connected to the charging control unit (2). The infrared ranging unit (7) includes an infrared emitting module (71), an infrared receiving module (72) corresponding to the infrared emitting module (71), and a ranging processing chip (73) electrically connected to the infrared emitting module (71) and the infrared receiving module (72) respectively. The ranging processing chip (73) is also electrically connected to the charging management chip (23). The body temperature detection unit (8) is installed in the mounting groove (14) on the side of the middle shell (12), and the body temperature detection unit (8) is electrically connected to the charging control unit (2). The body temperature detection unit (8) includes an infrared body temperature sensor (81), a body temperature signal conditioning circuit (82) electrically connected to the infrared body temperature sensor (81), a body temperature processing chip (83) electrically connected to the body temperature signal conditioning circuit (82), and a display module (84) electrically connected to the body temperature processing chip (83). The body temperature detection unit (8) is electrically connected to the charging control unit (2).

2. The multi-functional charger for an infrared body temperature detection battery according to claim 1, characterized in that: The charging control unit (2) includes an input power conditioning circuit (21), a DC-DC conversion module (22), a charging management chip (23), and a constant current control circuit (24) connected in sequence. It also includes a constant voltage control circuit (25) connected in parallel with the constant current control circuit (24), and a temperature compensation unit (26) connected in parallel with the charging management chip (23), the constant current control circuit (24), and the constant voltage control circuit (25). The charging control unit (2) is also electrically connected to the output unit (3) and the input unit (4).

3. The multi-functional charger for an infrared body temperature detection battery according to claim 1, characterized in that: The battery management unit (5) includes a battery monitoring module (51), a charging control module (52), a protection module (53), and an energy conversion and distribution module (54). The battery monitoring module (51) monitors the voltage, current, and temperature parameters of the battery (6) in real time and transmits the data to the charging control module (52). The charging control module (52) regulates the charging process based on these data and the preset charging strategy, and transmits the charging control command to the energy conversion and distribution module (54). The protection module (53) monitors the operating status of each part of the battery management unit (5) in real time. Once an overcharge, over-discharge, overcurrent, or short circuit abnormality is detected, the relevant circuit will be quickly cut off to protect the battery (6). The energy conversion and distribution module (54) receives the command from the charging control module (52) and performs reasonable conversion and distribution of the electrical energy delivered by the charging control unit (2) to charge the battery (6) and provide stable electrical energy to the output unit (3).

4. The multi-functional charger for an infrared body temperature detection battery according to claim 1, characterized in that: The four corners of the rear side of the middle shell (12) are provided with four mounting blocks (15) with holes, and the four corners of the inner wall of the rear shell (13) are provided with four threaded post I (16). The charging control unit (2) is placed inside the middle shell (12) and located in front of the mounting blocks (15). The charging control unit (2), the middle shell (12) and the rear shell (13) are fixed together by the mounting holes I (17) through the four corners of the battery management unit (5), the mounting blocks (15) with holes and the screws that are screwed to the threaded post I (16).

5. A multi-functional charger for an infrared body temperature detection battery according to claim 1, characterized in that: A sealing gasket I (18) is provided between the front shell (11) and the middle shell (12), and a sealing gasket II (19) is provided between the middle shell (12) and the rear shell (13).

6. A multi-functional charger for infrared body temperature detection batteries according to claim 1, characterized in that: The detection probe (85) of the infrared body temperature sensor (81) on the body temperature detection unit (8) is attached to the housing of the body temperature detection unit (8), and the housing of the body temperature detection unit (8) is provided with a fastening groove (110) for attaching the detection probe (85).

7. A multi-functional charger for infrared body temperature detection batteries according to claim 1, characterized in that: The inner wall of the front shell (11) is provided with a positioning groove (111) for engaging and positioning the battery (6).

8. A multi-functional charger for infrared body temperature detection batteries according to claim 1, characterized in that: The inner wall of the front shell (11) is provided with threaded post II (112). The battery management unit (5) is fixed together with the front shell (11) by screws that pass through the mounting holes II (113) at the four corners of the battery management unit (5) and are screwed to the threaded post II (112).

9. A multi-functional charger for an infrared body temperature detection battery according to claim 1, characterized in that: The inner wall surface of the middle shell (12) near the front shell (11) is provided with a fastening position (114), and the front shell (11) is provided with a fastening block (115) that cooperates with the fastening position (114) to fasten together. The front shell (11) and the middle shell (12) are fastened and sealed together by the fastening position (114) and the fastening block (115).

10. A multi-functional charger for an infrared body temperature detection battery according to claim 1, characterized in that: The input unit (4) is located on the side away from the body temperature detection unit (8); the output unit (3) is embedded in the front shell (11), and the front shell (11) is also equipped with a switch button (116) that is electrically connected to the charging control unit (2).

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