Intelligently regulated charging circuit, control method, device, and storage medium

Abstract

This application relates to an intelligently adjustable charging circuit, control method, device, and storage medium. The circuit includes a slow charging module, a fast charging module, a switch module, a rechargeable battery module, and a main control module. The switch module changes its internal conduction state when the main control module detects a switch from the slow charging module to the fast charging module or vice versa. The rechargeable battery module charges the charging device via the slow charging module or the fast charging module when the main control module detects that the charging device has reached charging conditions. The charging device internally contains the rechargeable battery module. The main control module determines the charging mode by detecting the device temperature and the rechargeable battery temperature, and then controls the switch module to select slow or fast charging, achieving intelligent charging. This improves charging efficiency and achieves the technical effect of fast charging.

Description

Technical Field

[0001] This application relates to the technical field of device charging control, and more particularly to an intelligent adjustment charging circuit, control method, device, and storage medium. Background Technology

[0002] With the increasing variety of electronic products, the requirements for charging efficiency are also rising. Faster charging provides a better user experience. Currently, electronic products generally have two charging modes: normal charging and fast charging.

[0003] However, normal charging increases charging time and affects the user experience of electronic products; while using only fast charging can cause the battery to overheat and damage other components after a long period of time. The existing method of combining normal and fast charging simply selects one charging method and does not change it. It has the same effect as the original normal or fast charging, without improving charging efficiency or solving the problem of overheating. Summary of the Invention

[0004] In view of this, in order to solve the technical problem of low charging efficiency of the above-mentioned devices, this application provides an intelligent adjustment charging circuit, control method, device and storage medium.

[0005] In a first aspect, embodiments of this application provide an intelligently adjustable charging circuit, comprising:

[0006] Slow charging module, fast charging module, switch module, rechargeable battery module, and main control module;

[0007] The first output terminal of the slow charging module is connected to the first input terminal of the fast charging module and the first input terminal of the switch module. The second output terminal of the slow charging module is connected to the first input terminal of the main control module. The input terminal of the slow charging module is connected to the first output terminal of the main control module. The slow charging module is used to charge the rechargeable battery module when the main control module detects that the rechargeable battery module has reached a first set condition.

[0008] The second input terminal of the fast charging module is connected to the second output terminal of the main control module, the third input terminal of the fast charging module is connected to the first output terminal of the switch module and the first output terminal of the rechargeable battery module, and the output terminal of the fast charging module is connected to the second input terminal of the switch module. The fast charging module is used to charge the rechargeable battery module when the main control module detects that the rechargeable battery module has reached a second set condition. The first set condition and the second set condition may be the same or different.

[0009] The third input terminal of the switch module is connected to the third output terminal of the main control module, the second output terminal of the switch module is connected to the first input terminal of the rechargeable battery module, and the third output terminal of the switch module is connected to the second input terminal of the main control module. The switch module is used to change its internal conduction state when the main control module detects switching from the slow charging module to the fast charging module or switching from the fast charging module to the slow charging module.

[0010] The second output terminal of the rechargeable battery module is connected to the third input terminal of the main control module. The rechargeable battery module is used to charge the rechargeable battery module through the slow charging module or the fast charging module when the main control module detects that the charging device has reached the charging condition. The charging device contains the rechargeable battery module.

[0011] In one possible implementation, the main control module includes: a main control chip and a device temperature measurement unit;

[0012] The first output terminal of the main control chip is connected to the first input terminal of the slow charging module as the first output terminal of the main control module. The second output terminal of the main control chip is connected to the second input terminal of the fast charging module as the second output terminal of the main control module. The third output terminal of the main control chip is connected to the third input terminal of the switch module as the third output terminal of the main control module. The first input terminal of the main control chip is connected to the second output terminal of the slow charging module as the first input terminal of the main control module. The second input terminal of the main control chip is connected to the third output terminal of the switch module as the second input terminal of the main control module. The third input terminal of the main control chip is connected to the second output terminal of the rechargeable battery module as the third input terminal of the main control module. The fourth input terminal of the main control chip is connected to the device temperature measurement unit, which is used to collect the current temperature data of the device through the main control chip.

[0013] In one possible implementation, the device temperature measuring unit includes: a first device, a first thermistor, and a first impedance;

[0014] The first device is connected to the first thermistor inductively, and a rechargeable battery module is embedded inside the first device;

[0015] One end of the first thermistor is connected to the first ground terminal, and the other end of the first thermistor is connected to one end of the first impedance.

[0016] The other end of the first impedance is connected to the internal power supply terminal.

[0017] In one possible implementation, the slow charging module includes: a DC source, a first inductor, a first capacitor, a first transistor, a first diode, a second impedance, a third impedance, and a second capacitor;

[0018] The negative input terminal of the DC source is connected to the second ground terminal, one end of the first capacitor, the first terminal of the first transistor, one end of the third impedance, and one end of the second capacitor. The positive output terminal of the DC source is connected to the other end of the first capacitor and one end of the first inductor. The DC source is used to power the internal components of the slow charging module.

[0019] The other end of the first inductor is connected to the inverting input terminal of the first diode and the second terminal of the first transistor;

[0020] The control terminal of the first transistor is connected to the first output terminal of the main control module as the first input terminal of the slow charging module.

[0021] The positive output terminal of the first diode serves as the first output terminal of the slow charging module and is connected to the first node via one end of the second impedance, the other end of the second capacitor, the first input terminal of the fast charging module, and the first input terminal of the switching module.

[0022] The other end of the second impedance is connected as the second output terminal of the slow charging module, and is connected to the other end of the third impedance and the first input terminal of the main control module.

[0023] In one possible implementation, the fast charging module includes: an operational amplifier, a first switching transistor, a second switching transistor, a third switching transistor, a second diode, and a fourth impedance;

[0024] The positive input terminal of the operational amplifier is connected to the second input terminal of the fast charging module and the second output terminal of the main control module. The negative input terminal of the operational amplifier is connected to the first terminal of the first switching transistor and one end of the fourth impedance. The output terminal of the operational amplifier is connected to the control terminal of the first switching transistor. The operational amplifier is used to change the output signal of the operational amplifier after receiving the electrical signal input by the main control module.

[0025] The second terminal of the first switching transistor is connected to the second terminal of the second switching transistor, the control terminal of the second switching transistor, and the control terminal of the third switching transistor.

[0026] The first end of the second switching transistor serves as the first input terminal of the fast charging module and is connected to the first end of the third switching transistor, the first output terminal of the slow charging module, and the first input terminal of the switching module.

[0027] The second terminal of the third switch is connected to the inverting input terminal of the second diode;

[0028] The positive output terminal of the second diode is connected to the second input terminal of the switching module as the output terminal of the fast charging module.

[0029] The other end of the fourth impedance serves as the third input terminal of the fast charging module and is connected to the first output terminal of the switch module, the first output terminal of the rechargeable battery module, and the second ground terminal.

[0030] In one possible implementation, the switching module includes: a fourth switching transistor, a fifth switching transistor, a third diode, a fifth impedance, a sixth impedance, a seventh impedance, an eighth impedance, a ninth impedance, and a third capacitor;

[0031] The first terminal of the fourth switch is connected to the first input terminal of the switch module and the first output terminal of the slow charging module, the first input terminal of the fast charging module and one end of the seventh impedance. The second terminal of the fourth switch is connected to the negative input terminal of the third diode. The control terminal of the fourth switch is connected to the other end of the seventh impedance and one end of the eighth impedance.

[0032] The positive output terminal of the third diode is connected to the first output terminal of the fast charging module as the second input terminal of the switching module. The positive output terminal of the third diode is also connected to one end of the fifth impedance and the first input terminal of the rechargeable battery module as the second output terminal of the switching module.

[0033] The other end of the fifth impedance serves as the third output terminal of the switching module and is connected to one end of the sixth impedance and the second input terminal of the main control module.

[0034] The other end of the sixth impedance is connected as the first output terminal of the switching module to the third input terminal of the fast charging module and the first output terminal of the rechargeable battery module.

[0035] The other end of the eighth impedance is connected to the second end of the fifth switching transistor;

[0036] The first terminal of the fifth switch is connected to one terminal of the third capacitor and the third ground terminal. The control terminal of the fifth switch is connected to the other terminal of the third capacitor and one terminal of the ninth impedance. The fifth switch is used to receive the square wave signal input by the main control module and change the conduction frequency of the third switch according to the square wave signal.

[0037] The other end of the ninth impedance is connected as the third input terminal of the switching module and the third output terminal of the main control module.

[0038] In one possible implementation, the rechargeable battery module includes: a rechargeable battery pack, a second thermistor, and a tenth thermistor;

[0039] The positive charging terminal of the rechargeable battery pack is connected to the second output terminal of the switch module as the input terminal of the rechargeable battery module, and the negative discharging terminal of the rechargeable battery pack is connected to the first output terminal of the switch module, the third input terminal of the fast charging module, and one end of the second thermistor as the first output terminal of the rechargeable battery module.

[0040] The other end of the second thermistor is connected as the second output terminal of the rechargeable battery module, the third input terminal of the main control module, and one end of the tenth impedance.

[0041] The other end of the tenth impedance is connected to the internal power supply terminal.

[0042] In a second aspect, embodiments of this application provide a control method for a charging circuit, applied to an intelligently adjustable charging circuit as described in any of the first aspects, comprising:

[0043] The first temperature of the rechargeable battery module and the second temperature of the main control module are obtained. The first temperature represents the detected temperature of a first designated area within the rechargeable battery module, and the second temperature represents the detected temperature of a second designated area within the main control module.

[0044] The target charging mode is determined based on the first temperature and the second temperature;

[0045] The switching mode of the switching module is determined according to the target charging mode, and the switching mode represents the conduction state within the switching module;

[0046] The charging control of the rechargeable battery module is performed based on the target switching mode.

[0047] In one possible implementation, obtaining the first temperature of the rechargeable battery module and the second temperature of the main control module includes:

[0048] The first temperature of the rechargeable battery pack in the rechargeable battery module is obtained by using the first thermistor impedance.

[0049] The second temperature of the first device in the device temperature measurement unit is obtained by using the second thermistor.

[0050] In one possible implementation, determining the target charging mode based on the first temperature and the second temperature includes:

[0051] Obtain the third temperature of the first device corresponding to a set time interval, and determine the temperature difference between the third temperature and the second temperature, wherein the temperature difference is the temperature change value between the third temperature and the second temperature;

[0052] Determine whether the first temperature is within a set first threshold range, and determine whether the difference temperature is within a set second threshold range, to obtain a determination result;

[0053] The target charging mode of the rechargeable battery module is determined based on the judgment result.

[0054] In one possible implementation, determining whether the first temperature is within a set first threshold range and determining whether the difference temperature is within a set second threshold range to obtain a determination result includes:

[0055] When the temperature difference is within the second threshold range, the judgment result is obtained as the first judgment result;

[0056] When the first temperature is within the first threshold range and the difference temperature exceeds the second threshold range, the judgment result is obtained as the second judgment result;

[0057] When the first temperature exceeds the first threshold range and the difference temperature exceeds the second threshold range, the judgment result is obtained as the third judgment result.

[0058] In one possible implementation, determining the target charging mode of the rechargeable battery module based on the determination result includes:

[0059] When the judgment result is the first judgment result, the target charging mode is determined to be the first fast charging mode;

[0060] When the judgment result is the second judgment result, the target charging mode is determined to be the second fast charging mode, and the parameters contained in the first fast charging mode and the second fast charging mode are the same or different.

[0061] When the judgment result is the third judgment result, the target charging mode is determined to be the slow charging mode.

[0062] In one possible implementation, determining the switching mode of the switching module based on the target charging mode includes:

[0063] When the target charging mode is the first fast charging mode or the second fast charging mode, it is determined that the switching module is in the first switching mode, and the first switching mode indicates that the internal state of the switching module is disconnected;

[0064] When the target charging mode is the slow charging mode, the switch module is determined to be in the second switch mode, which indicates that the switch module is in a conducting state.

[0065] In one possible implementation, the step of performing charging control on the rechargeable battery module based on the target switching mode includes:

[0066] When the target switch mode is the first switch mode, the fifth switch tube in the switch module is kept in the off state so that the slow charging module performs charging control on the rechargeable battery.

[0067] When the target switch mode is the second switch mode, the fifth switch tube in the switch module is kept in the off state so that the slow charging module can perform charging control on the rechargeable battery.

[0068] In one possible implementation, the method further includes:

[0069] Adjust the conduction duration and frequency of the first transistor in the slow charging module to change the output voltage of the slow charging module;

[0070] or,

[0071] Adjust the frequency of the input pulse signal of the operational amplifier in the fast charging module to change the output current of the fast charging module.

[0072] Thirdly, embodiments of this application provide a control device, including a processor and a memory, wherein the processor is configured to execute a control program for human body impedance detection stored in the memory to implement the control method of the charging circuit described in any of the second aspects.

[0073] Fourthly, embodiments of this application provide a storage medium storing one or more programs, which can be executed by one or more processors to implement the control method of the charging circuit described in any of the second aspects.

[0074] The intelligent adjustable charging circuit provided in this application embodiment includes a slow charging module, a fast charging module, a switch module, a rechargeable battery module, and a main control module. The first output terminal of the slow charging module is connected to the first input terminal of the fast charging module and the first input terminal of the switch module. The second output terminal of the slow charging module is connected to the first input terminal of the main control module, and the input terminal of the slow charging module is connected to the first output terminal of the main control module. The slow charging module is used to charge the rechargeable battery module when the main control module detects that the rechargeable battery module has reached a first set condition. The second input terminal of the fast charging module is connected to the second output terminal of the main control module, and the third input terminal of the fast charging module is connected to the first output terminal of the switch module and the first output terminal of the rechargeable battery module. The output terminal of the fast charging module is connected to the second input terminal of the switch module. The fast charging module is used to charge the rechargeable battery module when the main control module detects that the fast charging module has reached a first set condition. When the rechargeable battery module reaches a second set condition, it is charged. The first and second set conditions can be the same or different. The third input terminal of the switch module is connected to the third output terminal of the main control module, the second output terminal of the switch module is connected to the first input terminal of the rechargeable battery module, and the third output terminal of the switch module is connected to the second input terminal of the main control module. The switch module is used to change its internal conduction state when the main control module detects a switch from slow charging to fast charging or vice versa. The second output terminal of the rechargeable battery module is connected to the third input terminal of the main control module. The rechargeable battery module is used to charge the charging device through the slow charging module or fast charging module when the main control module detects that the charging device has reached the charging condition. The charging device contains the rechargeable battery module. The main control module determines the charging mode by detecting the device temperature and the rechargeable battery temperature, and then controls the switch module to select slow charging or fast charging to achieve the purpose of intelligent charging. This solution can improve charging efficiency and achieve the technical effect of fast charging. Attached Figure Description

[0075] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0076] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0077] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0078] Figure 1This is a schematic diagram of the structure of an intelligent regulating charging circuit provided in an embodiment of this application;

[0079] Figure 2 This is a schematic diagram of another intelligent regulating charging circuit provided in an embodiment of this application;

[0080] Figure 3 A flowchart illustrating a control method for a charging circuit provided in an embodiment of this application;

[0081] Figure 4 A flowchart illustrating another control method for a charging circuit provided in an embodiment of this application;

[0082] Figure 5 A flowchart illustrating another control method for a charging circuit provided in an embodiment of this application;

[0083] Figure 6 This is a schematic diagram of the structure of a control device provided in an embodiment of this application. Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0085] The terms "comprising" and "having" in the embodiments of this application are used to indicate an open-ended inclusion, meaning that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms "first" and "second," etc., are used only as labels and are not intended to limit the number of objects. Furthermore, the different elements and areas in the drawings are only schematic, therefore this application is not limited to the dimensions or distances shown in the drawings.

[0086] With the continuous innovation of smart devices, smart wearable devices and embedded devices are constantly developing. Whether it's charging devices in daily life or charging embedded devices inside the body, the charging process is affected by device temperature. Excessive temperature not only affects the lifespan of the device but also impacts the user experience. Some technologies attempt to alleviate low charging efficiency by switching between normal and fast charging methods; however, the problem of excessive device temperature affecting charging efficiency during the charging process remains unresolved.

[0087] To address the aforementioned issues, this application proposes an adjustable charging circuit. The main control module pre-detects the device temperature and the rechargeable battery temperature. When both temperatures meet the set fast charging requirements, a switch module selects and connects the fast charging module to charge the rechargeable battery module. Conversely, when both temperatures meet the set slow charging requirements, a switch module selects and connects the slow charging module to charge the rechargeable battery module. The detected device and battery temperatures serve as reference conditions for switching charging modes. Furthermore, after selecting a charging mode, the charging current is adjusted to improve charging efficiency.

[0088] To facilitate understanding of the embodiments of this application, the following will provide further explanation and description with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application.

[0089] Figure 1 This is a schematic diagram of an intelligent regulating charging circuit provided in an embodiment of this application. Figure 1 The provided diagram shows that the intelligent adjustment charging circuit specifically includes the following structures:

[0090] Slow charging module 10, fast charging module 20, switch module 30, rechargeable battery module 40 and main control module 50.

[0091] The first output terminal of the slow charging module 10 is connected to the first input terminal of the fast charging module 20 and the first input terminal of the switch module 30. The second output terminal of the slow charging module 10 is connected to the first input terminal of the main control module 50. The input terminal of the slow charging module 10 is connected to the first output terminal of the main control module 50. The slow charging module 10 is used to charge the rechargeable battery module 40 when the main control module 50 detects that the rechargeable battery module 40 has reached the first set condition.

[0092] The second input terminal of the fast charging module 20 is connected to the second output terminal of the main control module 50, the third input terminal of the fast charging module 20 is connected to the first output terminal of the switch module 30 and the first output terminal of the rechargeable battery module 40, and the output terminal of the fast charging module 20 is connected to the second input terminal of the switch module 30. The fast charging module 20 is used to charge the rechargeable battery module 40 when the main control module 50 detects that the rechargeable battery module 40 has reached the second set condition. The first set condition and the second set condition may be the same or different.

[0093] The third input terminal of the switch module 30 is connected to the third output terminal of the main control module 50, the second output terminal of the switch module 30 is connected to the first input terminal of the rechargeable battery module 40, and the third output terminal of the switch module 30 is connected to the second input terminal of the main control module 50. The switch module 30 is used to change its internal conduction state when the main control module 50 detects that it is switching from the slow charging module 10 to the fast charging module 20 or from the fast charging module 20 to the slow charging module 10 for charging.

[0094] The second output terminal of the rechargeable battery module 40 is connected to the third input terminal of the main control module 50. The rechargeable battery module 40 is used to charge the rechargeable battery module 40 through the slow charging module 10 or the fast charging module 20 when the main control module 50 detects that the charging device has reached the charging condition. The charging device contains the rechargeable battery module 40.

[0095] For example, the first setting condition can be understood as the current charging demand of the rechargeable battery module decreases, or the charging capacity does not affect the power supply demand of the rechargeable battery module; or when the device temperature and the internal temperature of the rechargeable battery module exceed a set temperature, the first setting condition is used to reduce the adverse effects of temperature on the rechargeable battery module, the device, and the user experience of the embedded device. The second setting condition can be understood as the situation where the device temperature and the temperature of the rechargeable battery module are within the set temperature range; or, when it is detected that the charging capacity of the rechargeable battery module is insufficient to power the external excitation source.

[0096] In one possible scenario, the main control module 50 detects the device temperature and obtains the internal temperature of the rechargeable battery module 40. When the battery charge in the rechargeable battery module 40 is lower than a set value (e.g., 20%), it is determined that the rechargeable battery module 40 needs to activate fast charging mode. The main control module 50 controls the switch module 30 to selectively conduct, thereby connecting the fast charging module 20 to the rechargeable battery module 40 after the switch module 30 is activated, enabling fast charging of the rechargeable battery module 40. During fast charging, the charge in the rechargeable battery module 40 is monitored in real time. If the charge has not reached the set value, but the device temperature exceeds the set value, the fast charging mode is maintained as long as the internal temperature of the rechargeable battery module 40 is within the set range. When both the device temperature and the internal temperature of the rechargeable battery module 40 exceed the set range, in order to protect the device from damage and ensure that no abnormal sensation is caused to the user, the fast charging mode needs to be switched to slow charging mode. The main control module 50 controls the switch module 30 to select the horizontal conduction mode, and the switch module 30 disconnects the fast charging module 20 from the rechargeable battery module 40. Simultaneously, the switch module 30 connects the slow charging module 10 to the rechargeable battery module 40, achieving slow charging mode. In slow charging mode, the charging current or voltage is reduced to lower the temperature. While the main control module 50 monitors the device temperature and the internal temperature of the rechargeable battery module 40 in real time, it also checks whether these temperatures exceed set ranges. If both temperatures are within the set range, the slow charging module 10 continues charging the rechargeable battery module 40. If both temperatures exceed the set range, the current in the charging circuit needs to be reduced to lower the device temperature. The main control module 50 reduces the frequency of the square wave signal output to the slow charging module 10, thereby reducing the output current of the slow charging module 10. This reduction in output current lowers the temperature generated during charging, achieving intelligent temperature regulation. At the same time, while achieving intelligent charging, the charging current is adjusted by changing the charging mode to improve charging efficiency.

[0097] This application proposes an intelligent regulating charging circuit, comprising a slow charging module, a fast charging module, a switch module, a rechargeable battery module, and a main control module. The first output terminal of the slow charging module is connected to the first input terminal of the fast charging module and the first input terminal of the switch module. The second output terminal of the slow charging module is connected to the first input terminal of the main control module, and the input terminal of the slow charging module is connected to the first output terminal of the main control module. The slow charging module is used to charge the rechargeable battery module when the main control module detects that the rechargeable battery module has reached a first set condition. The second input terminal of the fast charging module is connected to the second output terminal of the main control module, and the third input terminal of the fast charging module is connected to the first output terminal of the switch module and the first output terminal of the rechargeable battery module. The output terminal of the fast charging module is connected to the second input terminal of the switch module. The fast charging module is used to charge the rechargeable battery module when the main control module detects that the fast charging module has reached a first set condition. When the rechargeable battery module reaches the second set condition, it is charged. The first and second set conditions can be the same or different. The third input terminal of the switch module is connected to the third output terminal of the main control module, the second output terminal of the switch module is connected to the first input terminal of the rechargeable battery module, and the third output terminal of the switch module is connected to the second input terminal of the main control module. The switch module is used to change its internal conduction state when the main control module detects a switch from slow charging to fast charging or vice versa. The second output terminal of the rechargeable battery module is connected to the third input terminal of the main control module. The rechargeable battery module is used to charge the charging device through the slow charging module or fast charging module when the main control module detects that the charging device has reached the charging condition. The charging device contains the rechargeable battery module. The main control module determines the charging mode by detecting the device temperature and the rechargeable battery temperature, and then controls the switch module to select slow charging or fast charging to achieve the purpose of intelligent charging. This solution can improve charging efficiency and achieve the technical effect of fast charging.

[0098] Figure 2 This is a schematic diagram of another intelligent regulating charging circuit provided in an embodiment of this application. Figure 2 This is based on the previous embodiment. Figure 2 The provided diagram shows that the intelligent adjustment charging circuit specifically includes the following structures:

[0099] Slow charging module 10, fast charging module 20, switch module 30, rechargeable battery module 40 and main control module 50.

[0100] according to Figure 2 The provided diagram shows that the main control module 50 in the intelligent adjustment charging circuit includes: a main control chip MCU and a device temperature measurement unit 51.

[0101] The first output terminal of the main control chip MCU is connected to the first input terminal of the slow charging module 10 as the first output terminal of the main control module 50. The second output terminal of the main control chip MCU is connected to the second input terminal of the fast charging module 20 as the second output terminal of the main control module 50. The third output terminal of the main control chip MCU is connected to the third input terminal of the switch module 30 as the third output terminal of the main control module 50. The first input terminal of the main control chip MCU is connected to the second output terminal of the slow charging module 10 as the first input terminal of the main control module 50. The second input terminal of the main control chip MCU is connected to the third output terminal of the switch module 30 as the second input terminal of the main control module 50. The third input terminal of the main control chip MCU is connected to the second output terminal of the rechargeable battery module 40 as the third input terminal of the main control module 50. The fourth input terminal of the main control chip MCU is connected to the device temperature measurement unit 51. The device temperature measurement unit 51 is used to collect the current temperature data of the device through the main control chip MCU.

[0102] For example, the main control module 50 includes a main control chip (MCU) and a device temperature measurement unit 51. The main control chip connects to other modules to control the status of each module. The device temperature measurement unit 51 can detect the temperature of the device (e.g., a human embedded wearable device, production equipment, etc.) in real time and feed the monitored temperature back to the main control chip (MCU). At the same time, the rechargeable battery module detects its internal temperature in real time and feeds the measured internal temperature back to the main control chip (MCU). The main control chip (MCU) determines whether the current detected temperature (or temperature difference) of the device and the internal temperature of the rechargeable battery module exceed the set temperature range, which serves as a basis for judging whether the device or the rechargeable battery is overheating in the current charging environment and for adjusting the charging mode.

[0103] according to Figure 2 The provided diagram shows that the device temperature measurement unit 51 in the intelligent adjustment charging circuit includes: a first device A, a first thermistor NT1, and a first impedance R1.

[0104] The first device A is inductively connected to the first thermistor VT1, and the first device A has an embedded rechargeable battery module 40 (not shown in the attached figure).

[0105] One end of the first thermistor NT1 is connected to the first ground terminal, and the other end of the first thermistor NT1 is connected to one end of the first impedance R1.

[0106] The other end of the first impedance R1 is connected to the internal power supply terminal VCC.

[0107] For example, the voltage of the internal power supply terminal VCC can be set to 3.3V or 5V as required, and is not limited in this application.

[0108] For example, the device temperature measurement unit is used to detect the temperature of the device in real time. It is connected to the first device through a first thermistor NT1, and under the pull-up effect of the first thermistor, the sensed inductance is fed back to the main control chip MCU. The main control chip MCU analyzes the voltage division of the first thermistor NT1, and then calculates the current temperature of the first device, thereby determining whether the temperature of the first device exceeds the set full temperature range.

[0109] according to Figure 2 The provided diagram shows that the slow charging module 10 in the intelligent adjustment charging circuit includes: a DC source DC, a first inductor L1, a first capacitor C1, a first transistor Q1, a first diode D1, a second impedance R2, a third impedance R3, and a second capacitor C2.

[0110] The negative input terminal of the DC source is connected to the second ground terminal, one end of the first capacitor C1, the first end of the first transistor Q1, one end of the third impedance R3, and one end of the second capacitor C2. The positive output terminal of the DC source is connected to the other end of the first capacitor C1 and one end of the first inductor L1. The DC source is used to power the internal devices of the slow charging module 10.

[0111] The other end of the first inductor L1 is connected to the inverting input of the first diode D1 and the second end of the first transistor Q1.

[0112] The control terminal of the first transistor Q1 is connected to the first input terminal of the slow charging module 10 and the first output terminal of the main control module 50.

[0113] The positive output terminal of the first diode D1 serves as the first output terminal of the slow charging module 10, and is connected to the first node V0 via one end of the second impedance R2, the other end of the second capacitor C2, the first input terminal of the fast charging module 20, and the first input terminal of the switch module 30.

[0114] The other end of the second impedance R2 is connected as the second output terminal of the slow charging module 10, and the other end of the third impedance R3 is connected to the first input terminal of the main control module 50.

[0115] For example, the first transistor can be understood as a MOSFET, IGBT, or transistor, etc. The first terminal of the first transistor can be understood as the source of the MOSFET, the second terminal as the drain of the MOSFET, and the control terminal of the first transistor as the gate of the MOSFET.

[0116] In one possible scenario, the main control module 50 detects the device temperature and the internal temperature of the rechargeable battery module 40, and after comparison and analysis, determines that the rechargeable battery module 40 is currently in slow charging mode. It then controls the switch module 30 to select conduction, connecting the slow charging module 10 to the rechargeable battery module 40. Energy is stored in the first inductor L1 via a DC source, and the first capacitor serves as the input energy storage. The first diode controls the unidirectional conduction of the slow charging module. The main control module 50 controls the magnitude and frequency of the square wave signal input to the control terminal of the first transistor Q1, thereby affecting the conduction frequency and conduction duration of the first transistor Q1 within its cycle, achieving the purpose of increasing the voltage of the first node V0. The second capacitor serves as the output energy storage, and the output voltage of the slow charging module 10, combined with the first node V0 voltage, charges the rechargeable battery module 40. Simultaneously, the main control module 50 monitors the potential between the second impedance R2 and the third impedance R3 in real time, and through analysis and calculation, obtains the current and voltage division of the slow charging module 10, thus monitoring and adjusting the current of the slow charging module 10.

[0117] according to Figure 2 The diagram provided shows that the fast charging module 20 in the intelligent adjustment charging circuit includes: an operational amplifier U1, a first switching transistor T1, a second switching transistor T2, a third switching transistor T3, a second diode D2, and a fourth impedance R4.

[0118] The positive input terminal of the operational amplifier U1 is connected to the second output terminal of the main control module 50 as the second input terminal of the fast charging module 20. The negative input terminal of the operational amplifier U1 is connected to the first terminal of the first switching transistor T1 and one end of the fourth impedance R4. The output terminal of the operational amplifier U1 is connected to the control terminal of the first switching transistor T1. The operational amplifier U1 is used to change the output signal of the operational amplifier U1 after receiving the electrical signal input from the main control module 50.

[0119] The second terminal of the first switch T1 is connected to the second terminal of the second switch T2, the control terminal of the second switch T2, and the control terminal of the third switch T3.

[0120] The first terminal of the second switch T2 is connected to the first terminal of the fast charging module 20, the first terminal of the third switch T3, the first output terminal of the slow charging module 10, and the first input terminal of the switch module 30.

[0121] The second terminal of the third switch T3 is connected to the inverting input terminal of the second diode D2.

[0122] The positive output terminal of the second diode D2 is connected to the second input terminal of the switch module 30 as the output terminal of the fast charging module 20.

[0123] The other end of the fourth impedance R4 serves as the third input terminal of the fast charging module 20 and is connected to the first output terminal of the switch module 30, the first output terminal of the rechargeable battery module 40, and the second ground terminal.

[0124] For example, a switching transistor can be understood as a transistor with zero energy consumption and switching function, such as an IGBT.

[0125] according to Figure 2 The provided diagram shows that after the main control module 50 obtains the temperature of the device and the internal temperature of the rechargeable battery module 40, and confirms that both the device temperature and the internal temperature of the rechargeable battery module 40 are within the set temperature range, fast charging is activated. The internal selection of the control switch module 30 is turned on, so that the fast charging module 20 is connected to the rechargeable battery module 40. The main control module inputs a pulse wave signal to the operational amplifier U1, and the operational amplifier U1 outputs a control signal. Under the action of the constant current source formed by the first switch T1, the second switch T2 and the third switch T3, a large current signal is input to the second diode D2, thereby providing a large current signal to the rechargeable battery module 40 to achieve fast charging. After the main control module 50 detects in real time that the internal temperature of the rechargeable battery module 40 exceeds the set temperature range, regardless of whether the device temperature exceeds the set temperature range, in order to reduce the impact of the high temperature of the rechargeable battery module 40 on the user (overheating of the body-sensing embedded wearable device), it is necessary to lower the current internal temperature of the rechargeable battery module 40. The main control module 50 reduces the frequency or amplitude of the pulse wave signal input to the operational amplifier U1, thereby reducing the output current of the fast charging module 20. By adjusting the magnitude of the pulse wave signal input to the operational amplifier U1, the output current of the fast charging module 20 is changed. When the internal temperature of the rechargeable battery module 40 exceeds the set temperature range, the frequency or amplitude of the pulse wave signal of the operational amplifier U1 is reduced, thereby reducing the current input to the rechargeable battery module 40 and lowering the internal temperature of the rechargeable battery module 40.

[0126] according to Figure 2 The provided diagram shows that the switching module 30 in the intelligent adjustment charging circuit includes: a fourth switching transistor T4, a fifth switching transistor T5, a third diode D3, a fifth impedance R5, a sixth impedance R6, a seventh impedance R7, an eighth impedance R8, a ninth impedance R9, and a third capacitor C3.

[0127] The first end of the fourth switch T4 is connected to the first input end of the switch module 30, the first output end of the slow charging module 10, the first input end of the fast charging module 20, and one end of the seventh impedance R7. The second end of the fourth switch T4 is connected to the negative input end of the third diode D3. The control end of the fourth switch T4 is connected to the other end of the seventh impedance R7 and one end of the eighth impedance R8.

[0128] The positive output terminal of the third diode D3 is connected to the first output terminal of the fast charging module 20 as the second input terminal of the switching module 30. The positive output terminal of the third diode D3 is also connected to one end of the fifth impedance R5 and the first input terminal of the rechargeable battery module 40 as the second output terminal of the switching module 30.

[0129] The other end of the fifth impedance R5 is connected as the third output terminal of the switch module 30, and one end of the sixth impedance R6 and the second input terminal of the main control module 50.

[0130] The other end of the sixth impedance R6 is connected as the first output terminal of the switch module 30 to the third input terminal of the fast charging module 20 and the first output terminal of the rechargeable battery module 40.

[0131] The other end of the eighth impedance R8 is connected to the second end of the fifth switch T5.

[0132] The first terminal of the fifth switch transistor T5 is connected to one end of the third capacitor C3 and the third ground terminal. The control terminal of the fifth switch transistor T5 is connected to the other end of the third capacitor C3 and one end of the ninth impedance R9. The fifth switch transistor T5 is used to receive the square wave signal input by the main control module 50 and change the conduction frequency of the third switch transistor T3 according to the square wave signal.

[0133] The other end of the ninth impedance R9 is connected to the third input terminal of the switch module 30 and the third output terminal of the main control module 50.

[0134] For example, the fourth and fifth switching transistors mentioned here can be understood as power-free transistors, IGBTs, etc., that have switching functions.

[0135] For example, the fifth switch T5 in the switch module 30 acts as an adjustment switch, receiving the square wave signal sent by the main control module 50 in real time, and changing the conduction frequency and conduction duration of the fifth switch T5 by changing the frequency of the square wave signal input to the fifth switch T5.

[0136] In one possible scenario, after the main control module 50 acquires the device temperature and the internal temperature of the rechargeable battery module 40, it analyzes and determines that the rechargeable battery module 40 is currently performing fast charging. It then controls the fifth switch T5 to turn on, causing the fourth switch T4 to turn off, thus connecting the fast charging module 20 to the rechargeable battery module 40, enabling the fast charging module 20 to charge the rechargeable battery module 40. If the main control module 50 detects that the device temperature and the internal temperature of the rechargeable battery module 40 exceed a set temperature range, it needs to reduce the internal temperature of the rechargeable battery module 40. This is achieved by reducing the frequency of the square wave signal input to the fifth switch T5 to decrease its conduction time and frequency. Simultaneously, by reducing the sine wave signal input to the fast charging module 20, the main control module 50's output current is reduced, thereby lowering the current input to the rechargeable battery module 40, as well as parameters such as charging time and frequency, ultimately reducing the internal temperature of the rechargeable battery module 40.

[0137] according to Figure 2 The provided diagram shows that the rechargeable battery module 40 in the intelligent regulating charging circuit includes: a rechargeable battery pack B, a second thermistor NT2, and a tenth impedance R10.

[0138] The positive charging terminal of the rechargeable battery pack B is connected to the second output terminal of the switch module 30 as the input terminal of the rechargeable battery module 40. The negative discharging terminal of the rechargeable battery pack B is connected to the first output terminal of the switch module 30, the third input terminal of the fast charging module 20, and one end of the second thermistor NT2 as the first output terminal of the rechargeable battery module 40.

[0139] The other end of the second thermistor NT2 is connected as the second output terminal of the rechargeable battery module 40, and is connected to the third input terminal of the main control module 50 and one end of the tenth impedance R10.

[0140] The other end of the tenth impedance R10 is connected to the internal power supply terminal VCC.

[0141] For example, the internal power supply terminal VCC can be set to 3.3V or 5V or other parameter values ​​according to the charging circuit.

[0142] For example, before the main control module 50 acquires the device temperature and the internal temperature of the rechargeable battery module 40 in real time, the temperature of the rechargeable battery pack B is sensed in real time by the second thermistor NT2. The resistance value of the second thermistor NT2 is changed by the thermistor, thereby changing the voltage drop across the second thermistor NT2. By detecting the voltage drop across the second thermistor NT2 in real time, the main control module 50 calculates the temperature of the rechargeable battery pack B and determines the temperature of the rechargeable battery pack B in the current charging state, providing reference data for the next step of analysis to select fast charging or slow charging.

[0143] In one possible example scenario, according to Figure 2 The provided diagram shows that the temperature of the first device A is detected in real time by the first thermistor NT1, and the temperature difference between the devices is obtained by acquiring the device temperatures before and after a set time interval. At the same time, the temperature of the rechargeable battery pack B is detected in real time by the second thermistor NT2. When the device temperature difference is within the set temperature difference range and the battery temperature is within the set temperature range, the main controller MCU controls the fifth switch T5 to turn on, causing the fourth switch T4 to turn off, selecting the fast charging module 20 to connect with the rechargeable battery pack B to achieve fast charging. At this time, in order to accelerate the charging efficiency, the intensity of the pulse wave signal input to the input terminal of the operational amplifier U1 can be increased, so that the output current of the fast charging module 20 can be increased, thus accelerating the charging. When the temperature difference between the devices exceeds the set temperature range, but the temperature of the rechargeable battery pack B remains within the set temperature range, the current charging mode and charging current are maintained to avoid reducing charging efficiency. However, if both the temperature of the rechargeable battery pack B and the temperature difference between the devices exceed the set temperature range, the battery temperature of the rechargeable battery pack B will be too high, reducing the user experience. To lower the battery temperature, the pulse wave signal strength input to the operational amplifier U1 is reduced, thereby reducing the output current of the fast charging module 20 and slowing down the charging speed, thus achieving the purpose of cooling. Similarly, if the battery temperature is too high, the slow charging module 10 can be selected to charge the rechargeable battery pack B, thereby reducing the charging speed and lowering the battery temperature. Likewise, during the slow charging module's charging process, the main controller MCU will also monitor the temperature of the first device A and the temperature of the rechargeable battery B in real time. When the temperature exceeds the set temperature range, the voltage output at the first node V0 of the slow charging module is changed by altering the conduction duration and on-frequency of the fifth switch T5 within its cycle, thereby regulating the current and thus changing the charging temperature.

[0144] Figure 3 This is a flowchart illustrating a control method for a charging circuit provided in an embodiment of this application. It is applied to the intelligent adjustment charging circuit in the above embodiment. According to... Figure 3 The provided diagram illustrates the specific steps of the control method for the charging circuit, including:

[0145] S301. Obtain the first temperature of the rechargeable battery module and the second temperature of the main control module. The first temperature represents the detection temperature of a first designated area within the rechargeable battery module, and the second temperature represents the detection temperature of a second designated area within the main control module.

[0146] For example, based on the structure of the adjustable charging circuit, the main control module monitors the temperature of the device embedded inside the human body or where the charging circuit is located in real time, as well as the internal temperature of the rechargeable battery module. When both the device temperature and the internal temperature of the rechargeable battery module are within the safe temperature range, fast charging is initiated. The fast charging module connects to the rechargeable battery module by selectively controlling the internal conduction of the control switch module, providing a high-speed charging current to the rechargeable battery module. During fast charging, if the device temperature exceeds the safe temperature range, but the internal temperature of the rechargeable battery module remains within the safe temperature range, the main control module can control the intensity of the pulse wave signal input to the fast charging module. By reducing the frequency of the pulse wave signal, the charging speed is reduced, thereby decreasing the output current of the fast charging module, mitigating the problem of overheating without affecting the fast charging mode and improving charging efficiency. When both the device temperature and the internal temperature of the rechargeable battery module exceed the safe temperature range, to reduce the impact of the rechargeable battery and device on the user and to prevent damage to other components, the main control module controls the switch module to change its internal conduction mode, connecting the slow charging module to the rechargeable battery module and switching to slow charging mode. During the slow charging module's charging of the rechargeable battery module, the main control module monitors the device's temperature and the rechargeable battery module's internal temperature in real time. If the device's temperature exceeds the safe operating range, but the rechargeable battery module's temperature remains within the safe range, the main control module reduces the frequency of the square wave signal input to the slow charging module. This increases the slow charging module's output voltage without changing the output current, allowing slow charging to continue and improving charging efficiency. If both the device's temperature and the rechargeable battery module's internal temperature exceed the safe operating range, the main control module controls the switch module to shut down, stopping charging the rechargeable battery module and ensuring the safety of the device and the user.

[0147] For example, the first designated area mentioned here can be understood as the area where the battery pack is located within the rechargeable battery module. The second designated area mentioned here can be understood as the area where the device temperature detection is located within the main control module. The second designated area is used to detect the temperature of the device containing the rechargeable battery module.

[0148] For example, after the charging circuit is turned on, the first temperature of the battery inside the charging battery module is obtained through the main control module to obtain the battery temperature data. Then, the second temperature of the device is obtained to obtain the real-time temperature of the device, which provides a reference for determining the charging method based on the device temperature and the battery temperature in the next step.

[0149] S302. Determine the target charging mode based on the first temperature and the second temperature.

[0150] For example, the target charging mode mentioned here can be understood as selecting fast charging or slow charging for the rechargeable battery module.

[0151] Furthermore, when the main control module obtains the first temperature of the rechargeable battery module and the second temperature representing the device within the main control module, it determines whether the internal temperature of the rechargeable battery module is too high by judging whether the current first temperature exceeds the set temperature range. An excessively high rechargeable battery module temperature will affect the user's physical sensation, causing discomfort. By judging whether the second temperature exceeds the set temperature range, it determines whether the temperature of the device embedded in the user's body is too high. The temperature difference determines the range within which the two temperatures fall, and different temperatures correspond to different charging modes. When both the first and second temperatures are within the device's temperature range, indicating a low current temperature, a fast charging module is selected to charge the rechargeable battery module to improve charging efficiency. When the first temperature exceeds the set temperature range, but the second temperature is within the set temperature range, indicating an excessively high rechargeable battery module temperature, a slow charging module can be selected to charge the rechargeable battery module. When both the first and second temperatures are higher than the device's temperature range, the charging module can be switched from a fast charging module to a slow charging module, or the charging circuit can be directly shut off to ensure device safety. The target charging mode for the rechargeable battery module is determined by the first and second temperatures.

[0152] S303. Determine the switching mode of the switching module according to the target charging mode. The switching mode represents the conduction state within the switching module.

[0153] For example, the switch mode can be understood as the switch state within the switch module, which can be an internal on state or an internal off state.

[0154] Furthermore, after determining the target charging mode of the rechargeable battery module, the main control module generates a drive command to control the selective internal conduction state of the switch module, thereby selecting a suitable power supply module to charge the rechargeable battery module.

[0155] S304. Perform charging control on the rechargeable battery module based on the target switching mode.

[0156] For example, when the target charging mode is fast charging, the main control module sends a fast charging instruction to the switch module, keeping the switch inside the switch module in an open state, blocking the connection between the slow charging module and the rechargeable battery module, while allowing the fast charging module to connect to the rechargeable battery module. The main control module then controls the pulse wave signal of the fast charging module, changing the input signal magnitude of the fast charging module, and thus changing the output current magnitude to fast charge the rechargeable battery module. During fast charging, by real-time monitoring of the first and second temperatures, when the first and second temperatures change, for example, when the rechargeable battery module temperature is too high, the main control module reduces the frequency of the pulse wave signal input to the fast charging module, and simultaneously reduces the frequency of the square wave signal input to the switch module, achieving the purpose of deceleration, reducing the charging current, and thus reducing the temperature of the rechargeable battery module. Similarly, when the target charging mode is slow charging, the main control module controls the internal conduction of the switch module, blocking the connection between the fast charging module and the rechargeable battery module, while allowing the slow charging module to connect to the rechargeable battery module, and the rechargeable battery module to perform normal charging. When a change in the first and second temperatures is detected, in order to continue slow charging, the main control module reduces the square wave signal input to the slow charging module and the square wave signal input to the switching module, thereby reducing the output voltage of the slow charging module and achieving the purpose of slowing down the charging speed. This realizes intelligent adjustment of charging and improves charging efficiency.

[0157] Figure 4 This is a flowchart illustrating another control method for a charging circuit provided in an embodiment of this application. Figure 4 This is based on the previous embodiment. Figure 4 The provided diagram illustrates the specific steps of the control method for the charging circuit, including:

[0158] S401. Obtain the first temperature of the rechargeable battery pack in the rechargeable battery module through the first thermistor.

[0159] S402, Obtain the second temperature of the first device in the device temperature measurement unit through the second thermistor.

[0160] S403. Obtain the third temperature of the first device corresponding to the set time interval, and determine the temperature difference between the third temperature and the second temperature. The temperature difference is the temperature change value between the third temperature and the second temperature.

[0161] For example, in the charging control process of a device embedded in the human body, the first temperature of the charging battery pack is detected by a first thermistor in the charging battery module. The first temperature is used to detect whether the temperature of the charging battery pack exceeds a set temperature range in real time, which is used to detect the problem of overheating during charging and damage to circuit components. The second temperature of the device is detected by a second thermistor in the main control module. After a set time (e.g., 1 minute), the third temperature of the device is obtained again, and the temperature difference is used as the difference temperature. The difference temperature is used to determine whether the temperature of the charging device exceeds the set temperature range.

[0162] S404. Determine whether the first temperature is within the set first threshold range and whether the difference temperature is within the set second threshold range, and obtain the determination result.

[0163] S405. Determine the target charging mode of the rechargeable battery module based on the judgment result.

[0164] S406. Determine the switching mode of the switching module according to the target charging mode. The switching mode represents the conduction state within the switching module.

[0165] For example, the first threshold range is set to [0, 55℃], and the second threshold range is set to [0, 2℃].

[0166] Furthermore, it is determined whether the first temperature is within a first threshold range and whether the temperature difference is within a second threshold range to ascertain whether the current temperature of the charging battery pack and the first device is too high. Excessive temperature of the charging battery pack and the first device will affect the stability of the charging circuit and reduce the user experience. When both the first temperature and the temperature difference are within the set range, it indicates that the current temperature of the charging battery pack of the first device is low. To improve charging efficiency, a fast charging mode can be adopted, thereby controlling the switch module's internal switching mode to the off state. When the charging battery pack temperature is too high, exceeding the first threshold range, but the temperature difference of the first device is still within the second threshold range, to ensure charging efficiency, the fast charging mode can continue to be used, but the output current of the fast charging module needs to be reduced to avoid affecting fast charging. When the temperature difference of the first device exceeds the second threshold range and the first temperature of the charging battery pack exceeds the first threshold range, to prevent overheating, a slow charging mode is adopted, thereby controlling the switch module's internal switching mode to the on state.

[0167] In one possible scenario, the safe temperature range for the rechargeable battery pack is set to [0, 50℃], and the safe temperature range for the first device is set to [0, 2℃]. If the battery pack temperature is detected as 25℃ using a first thermistor, which is within the safe range; and the device temperature was detected as 25℃ one minute ago using a second thermistor, and is currently 26℃, the temperature difference is deduced to be 1℃, which is within the safe temperature difference range. Therefore, it is determined that both the device temperature difference and the battery pack are in a low-temperature state, and fast charging mode is selected. The switch module is internally disconnected, and the fast charging module charges the battery pack. If the first and second temperatures are monitored in real-time, but the first temperature changes and exceeds the set 50℃, while the temperature difference remains within the [0, 2℃] range, fast charging mode is maintained to improve charging efficiency by keeping the internal switch of the switch module disconnected. If the first temperature and the temperature difference exceed the threshold range, the device temperature is too high, affecting device stability. In this case, slow charging mode is selected, and the internal switch of the switch module is kept on to reduce the charging speed.

[0168] S407. Perform charging control on the rechargeable battery module based on the target switching mode.

[0169] S408. Adjust the conduction time and frequency of the first transistor in the slow charging module to change the output voltage of the slow charging module.

[0170] S409. Adjust the frequency of the input pulse signal of the operational amplifier in the fast charging module to change the output current of the fast charging module.

[0171] For example, the conduction duration and frequency can change the charging duration and frequency of the charging module to the rechargeable battery module.

[0172] Furthermore, after determining the charging mode and switching mode, the main control module executes the charging control of the rechargeable battery pack.

[0173] For example, after selecting the slow charging module to charge the rechargeable battery module, the difference between the first temperature and the first device temperature is detected in real time. When cooling control is required, the main control module reduces the square wave signal input to the slow charging module to reduce the output voltage, thereby reducing the voltage at the first node V0 while keeping the current constant. Without changing the charging efficiency, the charging speed is reduced, achieving a cooling effect. After selecting the fast charging module to charge the rechargeable battery module, changes in the first temperature and the difference temperature are detected. When the first temperature and the difference temperature are too high, in order not to damage the devices, the conduction time and frequency of the switching module are controlled, and the pulse wave signal strength input to the fast charging module is reduced, causing the output current of the fast charging module to decrease, achieving the purpose of speed reduction, and thus achieving cooling. By detecting the temperature, when the temperature is too high, the frequency and intensity of the output signal of the main control module are adjusted to change the charging speed, achieving the technical effect of intelligent charging adjustment and improving charging efficiency.

[0174] Figure 5 This is a flowchart illustrating another control method for a charging circuit provided in an embodiment of this application. Figure 5 Is Figure 3 This description is based on the illustrated embodiments. It provides a further detailed explanation of the control method for the charging circuit. Figure 5 The provided diagram illustrates the specific steps of the control method for the charging circuit, including:

[0175] S501. Obtain the first temperature of the rechargeable battery module and the second temperature of the main control module. The first temperature represents the detection temperature of a first designated area within the rechargeable battery module, and the second temperature represents the detection temperature of a second designated area within the main control module.

[0176] S502. Obtain the third temperature of the first device corresponding to the set time interval, and determine the temperature difference between the third temperature and the second temperature. The temperature difference is the temperature change value between the third temperature and the second temperature.

[0177] S503. When the temperature difference is within the second threshold range, the judgment result is the first judgment result.

[0178] S504. When the first temperature is within the first threshold range and the difference temperature exceeds the second threshold range, the judgment result is the second judgment result.

[0179] S505. When the first temperature exceeds the first threshold range and the difference temperature exceeds the second threshold range, the judgment result is the third judgment result.

[0180] According to the charging circuit structure, when charging the battery pack of the embedded human body device, in order to improve charging efficiency, the main control module first obtains the first temperature of the battery pack (e.g., the first temperature is detected as 35°C) and the second temperature of the first device (e.g., 30°C). Based on a set time interval (e.g., a set period of 10 minutes), a third temperature (e.g., 31°C) is obtained. The difference temperature of the first device is then determined to be 1°C. A first threshold range is set as the safe temperature range for the first temperature (e.g., [0, 65°C]). The first temperature is determined to be within the set first threshold range, and the difference temperature of the first device is determined to be within the first threshold range. Within the two threshold ranges, this situation serves as the first judgment result, providing a reference for the next step of activating the fast charging mode or slow charging module; when the first temperature is within the first threshold range, but the temperature difference exceeds 2°C, a second judgment result is obtained, providing a reference for switching charging modes or adjusting charging current or charging voltage; when the first temperature is detected to exceed 65°C, and the temperature difference exceeds 2°C, the charging battery pack temperature is too high, affecting the stability of the charging circuit components and reducing the user's experience (feeling that the embedded device is overheating), resulting in a third judgment result, which provides a basis for stopping charging.

[0181] S506. When the judgment result is the first judgment result, the target charging mode is determined to be the first fast charging mode.

[0182] S507. When the judgment result is the second judgment result, the target charging mode is determined to be the second fast charging mode, and the parameters contained in the first fast charging mode and the second fast charging mode are the same or different.

[0183] S508. When the judgment result is the third judgment result, the target charging mode is determined to be slow charging mode.

[0184] For example, based on the first judgment result, when the temperatures of both the charging battery pack and the first device are within a safe temperature range, it indicates that the current charging environment is not affected by temperature. To improve charging efficiency, the charging mode of the main battery pack is set to the first fast charging mode, and a fast charging module is selected to quickly charge the charging battery pack. Based on the second judgment result, when the first temperature of the charging battery pack is within a safe temperature range, but the differential temperature of the first device exceeds the safe temperature range, it indicates that the temperature of the first device currently embedded in the user's body is too high, but the temperature of the charging battery pack is not high, which will not affect the charging efficiency. Therefore, the target charging mode in this case is set to the second fast charging mode, and fast charging can continue. Based on the third judgment result, when the temperatures of both the charging battery pack and the first device are too high, it indicates that the first device generates a large amount of heat energy during the charging process. This heat energy may damage other components in the charging circuit. In this case, the target charging mode is set to the slow charging mode, which reduces the charging speed by reducing the charging current or charging voltage, or stops charging when the first temperature and differential temperature exceed the set threshold temperature range by a large margin, thereby reducing the impact of temperature.

[0185] S509. When the target charging mode is the first fast charging mode or the second fast charging mode, determine that the switch module is in the first switch mode. The first switch mode indicates that the switch module is in the open state.

[0186] S510. When the target charging mode is slow charging mode, determine that the switching module is in the second switching mode. The second switching mode indicates that the internal state of the switching module is in a conducting state.

[0187] S511. When the target switch mode is the first switch mode, the fifth switch tube in the control switch module is kept in the off state so that the slow charging module can perform charging control on the rechargeable battery.

[0188] S512. When the target switch mode is the second switch mode, the fifth switch tube in the control switch module is kept in the off state so that the slow charging module can perform charging control on the rechargeable battery.

[0189] For example, the first switching mode indicates that the fifth switch (e.g., an NPN transistor) in the switching module remains in the off state, causing the base potential of the fourth switch (e.g., a PNP transistor) to become high, thereby turning off the fourth switch and blocking the connection between the slow charging module and the rechargeable battery module, allowing the fast charging module to connect with the rechargeable battery pack and quickly charge the rechargeable battery pack; the second switching mode indicates that the fifth switch in the switching module remains in the on state, causing the base potential of the fourth switch to become low, thereby turning on the fourth switch and blocking the connection between the fast charging module and the rechargeable battery module, allowing the slow charging module to connect with the rechargeable battery pack and normally charge the rechargeable battery pack.

[0190] Furthermore, during the fast charging process, if the battery pack temperature is detected to be too high and exceeds the set first threshold range, regardless of the temperature of the first device, the output current of the fast charging module can be reduced by decreasing the intensity of the pulse wave signal input to the operational amplifier, thereby slowing down the charging process and alleviating the problem of excessive battery pack temperature. During the slow charging process, if the battery pack temperature is detected to exceed the set first threshold range, the frequency of the square wave signal at the control terminal of the first transistor can be reduced to decrease the output voltage at the first node, thereby achieving the purpose of slowing down the charging process and reducing the temperature without changing the output current.

[0191] In one possible scenario, the second temperature T of the first device containing the charging battery pack is monitored in real time via a first thermistor NT1. 设 Simultaneously, the first temperature T of the charging battery pack is monitored in real time using the second thermistor NT2. 冲 Calculate the temperature difference ΔT of the first device within the set time interval, and determine T respectively. 冲 Whether the temperature is within the first safe temperature range, and whether ΔT is within the second safe temperature range [0℃, 2℃]. If ΔT is within the [0℃, 2℃] range and is within the safe range, continue to maintain fast charging mode; if ΔT exceeds the [0℃, 2℃] range, if T... 冲 It remains within the first safe temperature range and continues to maintain fast charging mode; when ΔT exceeds the range of [0℃, 2℃], and T... 冲 When the temperature exceeds the first safe temperature range, the main controller MCU controls the fifth switch T5 to change the switching state and switch to slow charging mode.

[0192] When the battery pack is in slow charging mode, the main controller MCU controls the conduction time of the first transistor Q1 to increase the voltage of Vo at the first node, achieving a charging mode where the output current remains constant while the voltage increases, thereby improving charging efficiency.

[0193] When the battery is in fast charging mode, the main controller MCU controls the pulse waveform input to the operational amplifier U1 to change the magnitude of the output current. When the temperature of the first device and the charging battery pack is within the first safe temperature range, the output current is increased by increasing the input pulse waveform of the operational amplifier U1, thereby further accelerating battery charging. When the temperature difference of the first device exceeds the set second safe temperature range, or when the temperature of the charging battery pack is too high, the main controller MCU reduces the pulse wave signal input to the operational amplifier U1 to reduce the output current, thereby achieving the effect of slowing down charging and improving the impact of temperature on the charging battery.

[0194] Figure 6 This is a schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 6The control device 600 shown includes at least one processor 601, a memory 602, at least one network interface 604, and other user interfaces 603. The various components in the control device 600 are coupled together via a bus system 605. It is understood that the bus system 605 is used to implement communication between these components. In addition to a data bus, the bus system 605 also includes a power bus, a control bus, and a status signal bus. However, for clarity, ... Figure 6 The general designated all buses as Bus System 605.

[0195] The user interface 603 may include a display, keyboard, or clicking device (e.g., mouse, trackball, touchpad, or touchscreen).

[0196] It is understood that the memory 602 in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 602 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0197] In some implementations, memory 602 stores elements, executable units or data structures, or subsets thereof, or extended sets thereof: operating system 6021 and application program 6022.

[0198] The operating system 6021 includes various system programs, such as a framework layer, a core library layer, and a driver layer, used to implement various basic business functions and handle hardware-based tasks. The application program 6022 includes various applications, such as a media player and a browser, used to implement various application functions. Programs implementing the methods of the embodiments of this application can be included in application program 6022.

[0199] In this embodiment, by calling the program or instructions stored in memory 602, specifically the program or instructions stored in application program 6022, processor 601 executes the method steps provided in each method embodiment, including, for example:

[0200] The system acquires a first temperature of the rechargeable battery module and a second temperature of the main control module. The first temperature represents the detected temperature of a first designated area within the rechargeable battery module, and the second temperature represents the detected temperature of a second designated area within the main control module. A target charging mode is determined based on the first and second temperatures. A switching mode of the switching module is determined based on the target charging mode. The switching mode represents the conduction state within the switching module. Charging control of the rechargeable battery module is executed based on the target switching mode.

[0201] The methods disclosed in the embodiments of this application can be applied to or implemented by processor 601. Processor 601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in processor 601. The processor 601 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or can be executed by a combination of hardware and software units in the decoding processor. The software units may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 602. Processor 601 reads the information in memory 602 and, in conjunction with its hardware, completes the steps of the above method.

[0202] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or combinations thereof.

[0203] For software implementation, the techniques described herein can be implemented by units that perform the functions described herein. The software code can be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

[0204] The control device provided in this embodiment can be as follows: Figure 6 The control device shown can perform the following: Figure 3-5 All steps of the control method for the charging circuit are then implemented to achieve... Figure 3-5 For details on the technical effects of the control method of the charging circuit shown, please refer to [link / reference]. Figure 3-5 The relevant descriptions are presented concisely and will not be elaborated upon here.

[0205] This application also provides a storage medium (computer-readable storage medium). This storage medium stores one or more programs. The storage medium may include volatile memory, such as random access memory; it may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state drive; and it may also include combinations of the above types of memory.

[0206] When one or more programs in the storage medium can be executed by one or more processors to implement the control method of the charging circuit executed on the control device side.

[0207] The processor is used to execute a control program for the charging circuit stored in the memory to implement the following steps of a control method for the charging circuit executed on the control device side:

[0208] The system acquires a first temperature of the rechargeable battery module and a second temperature of the main control module. The first temperature represents the detected temperature of a first designated area within the rechargeable battery module, and the second temperature represents the detected temperature of a second designated area within the main control module. A target charging mode is determined based on the first and second temperatures. A switching mode of the switching module is determined based on the target charging mode. The switching mode represents the conduction state within the switching module. Charging control of the rechargeable battery module is executed based on the target switching mode.

[0209] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0210] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0211] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A control method for a charging circuit, applied to an intelligently adjustable charging circuit, characterized in that, include: A first temperature of the rechargeable battery module and a second temperature of the first device are obtained. The first temperature represents the detection temperature of a first designated area within the rechargeable battery module, and the second temperature represents the detection temperature of the first device. The rechargeable battery module is embedded inside the first device. A target charging mode is determined based on the first temperature and the second temperature, and the target charging mode includes a fast charging mode and a slow charging mode. The step of determining the target charging mode based on the first temperature and the second temperature includes: Obtain the third temperature of the first device corresponding to a set time interval, and determine the temperature difference between the third temperature and the second temperature, wherein the temperature difference is the temperature change value between the third temperature and the second temperature; When the temperature difference is within the second threshold range, the judgment result is the first judgment result; When the first temperature is within the first threshold range and the difference temperature exceeds the second threshold range, the judgment result is the second judgment result; When the first temperature exceeds the first threshold range and the difference temperature exceeds the second threshold range, the judgment result is the third judgment result; When the judgment result is the first judgment result, the target charging mode is determined to be the first fast charging mode; When the judgment result is the second judgment result, the target charging mode is determined to be the second fast charging mode, and the parameters contained in the first fast charging mode and the second fast charging mode are the same or different. When the judgment result is the third judgment result, the target charging mode is determined to be the slow charging mode.

2. The method according to claim 1, characterized in that, The intelligent adjustment charging circuit includes: Slow charging module, fast charging module, switch module, rechargeable battery module, and main control module; The first output terminal of the slow charging module is connected to the first input terminal of the fast charging module and the first input terminal of the switch module. The second output terminal of the slow charging module is connected to the first input terminal of the main control module. The input terminal of the slow charging module is connected to the first output terminal of the main control module. The slow charging module is used to charge the rechargeable battery module when the main control module detects that the rechargeable battery module has reached a first set condition. The second input terminal of the fast charging module is connected to the second output terminal of the main control module, the third input terminal of the fast charging module is connected to the first output terminal of the switch module and the first output terminal of the rechargeable battery module, and the output terminal of the fast charging module is connected to the second input terminal of the switch module. The fast charging module is used to charge the rechargeable battery module when the main control module detects that the rechargeable battery module has reached a second set condition. The first set condition and the second set condition may be the same or different. The third input terminal of the switch module is connected to the third output terminal of the main control module, the second output terminal of the switch module is connected to the first input terminal of the rechargeable battery module, and the third output terminal of the switch module is connected to the second input terminal of the main control module. The switch module is used to change its internal conduction state when the main control module detects switching from the slow charging module to the fast charging module or switching from the fast charging module to the slow charging module. The second output terminal of the rechargeable battery module is connected to the third input terminal of the main control module. The rechargeable battery module is used to charge the rechargeable battery module through the slow charging module or the fast charging module when the main control module detects that the charging device has reached the charging condition. The charging device contains the rechargeable battery module. The main control module includes: a main control chip and a device temperature measurement unit; The first output terminal of the main control chip is connected to the first input terminal of the slow charging module as the first output terminal of the main control module. The second output terminal of the main control chip is connected to the second input terminal of the fast charging module as the second output terminal of the main control module. The third output terminal of the main control chip is connected to the third input terminal of the switch module as the third output terminal of the main control module. The first input terminal of the main control chip is connected to the second output terminal of the slow charging module as the first input terminal of the main control module. The second input terminal of the main control chip is connected to the third output terminal of the switch module as the second input terminal of the main control module. The third input terminal of the main control chip is connected to the second output terminal of the rechargeable battery module as the third input terminal of the main control module. The fourth input terminal of the main control chip is connected to the device temperature measurement unit, which is used to collect the current temperature data of the device through the main control chip.

3. The method according to claim 2, characterized in that, The temperature measurement unit of the device includes: a first device, a first thermistor, and a first impedance; The first device is connected to the first thermistor inductively; One end of the first thermistor is connected to the first ground terminal, and the other end of the first thermistor is connected to one end of the first impedance. The other end of the first impedance is connected to the internal power supply terminal.

4. The method according to claim 2, characterized in that, The slow charging module includes: a DC source, a first inductor, a first capacitor, a first transistor, a first diode, a second impedance, a third impedance, and a second capacitor; The negative input terminal of the DC source is connected to the second ground terminal, one end of the first capacitor, the first terminal of the first transistor, one end of the third impedance, and one end of the second capacitor. The positive output terminal of the DC source is connected to the other end of the first capacitor and one end of the first inductor. The DC source is used to power the internal components of the slow charging module. The other end of the first inductor is connected to the inverting input terminal of the first diode and the second terminal of the first transistor; The control terminal of the first transistor is connected to the first output terminal of the main control module as the first input terminal of the slow charging module. The positive output terminal of the first diode serves as the first output terminal of the slow charging module and is connected to the first node via one end of the second impedance, the other end of the second capacitor, the first input terminal of the fast charging module, and the first input terminal of the switching module. The other end of the second impedance is connected as the second output terminal of the slow charging module, and is connected to the other end of the third impedance and the first input terminal of the main control module.

5. The method according to claim 4, characterized in that, The fast charging module includes: an operational amplifier, a first switching transistor, a second switching transistor, a third switching transistor, a second diode, and a fourth impedance; The positive input terminal of the operational amplifier is connected to the second input terminal of the fast charging module and the second output terminal of the main control module. The negative input terminal of the operational amplifier is connected to the first terminal of the first switching transistor and one end of the fourth impedance. The output terminal of the operational amplifier is connected to the control terminal of the first switching transistor. The operational amplifier is used to change the output signal of the operational amplifier after receiving the electrical signal input by the main control module. The second terminal of the first switching transistor is connected to the second terminal of the second switching transistor, the control terminal of the second switching transistor, and the control terminal of the third switching transistor. The first end of the second switching transistor serves as the first input terminal of the fast charging module and is connected to the first end of the third switching transistor, the first output terminal of the slow charging module, and the first input terminal of the switching module. The second terminal of the third switch is connected to the inverting input terminal of the second diode; The positive output terminal of the second diode is connected to the second input terminal of the switching module as the output terminal of the fast charging module. The other end of the fourth impedance serves as the third input terminal of the fast charging module and is connected to the first output terminal of the switch module, the first output terminal of the rechargeable battery module, and the second ground terminal.

6. The method according to claim 5, characterized in that, The switching module includes: a fourth switching transistor, a fifth switching transistor, a third diode, a fifth impedance, a sixth impedance, a seventh impedance, an eighth impedance, a ninth impedance, and a third capacitor; The first terminal of the fourth switch is connected to the first input terminal of the switch module and the first output terminal of the slow charging module, the first input terminal of the fast charging module and one end of the seventh impedance. The second terminal of the fourth switch is connected to the negative input terminal of the third diode. The control terminal of the fourth switch is connected to the other end of the seventh impedance and one end of the eighth impedance. The positive output terminal of the third diode is connected to the first output terminal of the fast charging module as the second input terminal of the switching module. The positive output terminal of the third diode is also connected to one end of the fifth impedance and the first input terminal of the rechargeable battery module as the second output terminal of the switching module. The other end of the fifth impedance serves as the third output terminal of the switching module and is connected to one end of the sixth impedance and the second input terminal of the main control module. The other end of the sixth impedance is connected as the first output terminal of the switching module to the third input terminal of the fast charging module and the first output terminal of the rechargeable battery module. The other end of the eighth impedance is connected to the second end of the fifth switching transistor; The first terminal of the fifth switch is connected to one terminal of the third capacitor and the third ground terminal. The control terminal of the fifth switch is connected to the other terminal of the third capacitor and one terminal of the ninth impedance. The fifth switch is used to receive the square wave signal input by the main control module and change the conduction frequency of the third switch according to the square wave signal. The other end of the ninth impedance is connected as the third input terminal of the switching module and the third output terminal of the main control module.

7. The method according to claim 6, characterized in that, After determining the target charging mode based on the first temperature and the second temperature, the method further includes: The target switching mode of the switching module is determined based on the target charging mode, and the target switching mode represents the conduction state within the switching module. The charging control of the rechargeable battery module is performed based on the target switching mode.

8. The method according to claim 7, characterized in that, Determining the target switching mode of the switching module based on the target charging mode includes: When the target charging mode is the first fast charging mode or the second fast charging mode, it is determined that the switching module is in the first switching mode, and the first switching mode indicates that the internal state of the switching module is disconnected; When the target charging mode is the slow charging mode, the switch module is determined to be in the second switch mode, which indicates that the switch module is in a conducting state.

9. The method according to claim 8, characterized in that, The step of performing charging control on the rechargeable battery module based on the target switching mode includes: When the target switch mode is the first switch mode, the fifth switch tube in the switch module is kept in the off state so that the fast charging module performs charging control on the rechargeable battery. When the target switch mode is the second switch mode, the fifth switch in the switch module is kept in the on state so that the slow charging module performs charging control on the rechargeable battery.

10. The method according to claim 2, characterized in that, The rechargeable battery module includes: a rechargeable battery pack, a second thermistor, and a tenth thermistor; The positive charging terminal of the rechargeable battery pack is connected to the second output terminal of the switch module as the input terminal of the rechargeable battery module, and the negative discharging terminal of the rechargeable battery pack is connected to the first output terminal of the switch module, the third input terminal of the fast charging module, and one end of the second thermistor as the first output terminal of the rechargeable battery module. The other end of the second thermistor is connected as the second output terminal of the rechargeable battery module, the third input terminal of the main control module, and one end of the tenth impedance. The other end of the tenth impedance is connected to the internal power supply terminal.

11. The method according to claim 4 or 5, characterized in that, The method further includes: Adjust the conduction duration and frequency of the first transistor in the slow charging module to change the output voltage of the slow charging module; or, Adjust the frequency of the input pulse signal of the operational amplifier in the fast charging module to change the output current of the fast charging module.

12. The method according to claim 2, characterized in that, The steps of obtaining the first temperature of the rechargeable battery module and obtaining the second temperature of the first device include: The first temperature of the rechargeable battery pack in the rechargeable battery module is obtained by using a first thermistor impedance. The second temperature of the first device in the device temperature measurement unit is obtained by using a second thermistor.

13. A control device, characterized in that, include: A processor and a memory, the processor being configured to execute a control program stored in the memory to implement the control method of the charging circuit according to any one of claims 1 to 12.

14. A storage medium, characterized in that, The storage medium stores one or more programs, which can be executed by one or more processors to implement the control method of the charging circuit according to any one of claims 1 to 12.

Images