Battery charging control method and continuous blood glucose monitoring equipment

Abstract

The invention relates to a battery charging control method and continuous blood glucose monitoring equipment, the continuous blood glucose monitoring equipment comprises a control unit, a charging management unit, a switching device and a battery, the control unit is connected with the switching device, the switching device is connected with the charging management unit, and the battery is connected with the charging management unit. The charging management unit is connected with the battery, the switching device is externally connected with a charging power supply, and the control unit is used for obtaining the electric quantity of the battery under the condition that the switching device is in an off state; and under the condition that the electric quantity of the battery is smaller than a first electric quantity threshold value, the switching device is controlled to be switched on, so that the charging power supply is used for charging the battery through the charging management unit.

Description

Technical Field

[0001] The present disclosure relates to charging control technology, and more particularly, to a battery charging control method and a continuous glucose monitoring device. Background Art

[0002] Continuous Glucose Monitoring (CGM) devices play an important role in the field of medical technology, and they can monitor the blood glucose level of users in real time. Currently, CGM devices cannot achieve automatic recharge when the charging power supply is not unplugged. Summary of the Invention

[0003] An object of the present invention is to provide a new technical solution for a charging power detection method.

[0004] According to a first aspect of the present invention, there is provided a continuous glucose monitoring device, including: a control unit, a charging management unit, a switching device, and a battery, wherein the control unit is connected to the switching device, the switching device is connected to the charging management unit, the charging management unit is connected to the battery, and the switching device is externally connected to a charging power supply, wherein,

[0005] The control unit is configured to obtain the power of the battery when the switching device is in an off state; and when the power of the battery is less than a first power threshold, control the switching device to close, so as to use the charging power supply to charge the battery through the charging management unit.

[0006] Optionally, the control unit is further configured to control the switching device to open when the power of the battery is greater than a second power threshold, so as to disconnect the charging path for the battery through the charging management unit, wherein,

[0007] The second power threshold is greater than the first power threshold.

[0008] Optionally, the continuous glucose monitoring device further includes a sampling resistor and a coulomb counter. The sampling resistor is disposed in a circuit between the charging management unit and the battery. One end of the coulomb counter is connected to a first connection point, and the other end of the coulomb counter is connected to a second connection point. The first connection point is disposed between the charging management unit and the sampling resistor, and the second connection point is disposed between the sampling resistor and the battery, wherein,

[0009] The coulomb counter is configured to obtain a voltage value across the sampling resistor and send the voltage value across the sampling resistor to the control unit;

[0010] The control unit is configured to determine the charging current of the battery according to the voltage across the sampling resistor and the resistance value of the sampling resistor; and determine the power of the battery according to the charging current of the battery.

[0011] Optionally, the continuous blood glucose monitoring device further includes a first voltage-dividing resistor and a second voltage-dividing resistor. One end of the first voltage-dividing resistor is connected to the charging power supply, the other end of the first voltage-dividing resistor is connected to one end of the second voltage-dividing resistor, the other end of the second voltage-dividing resistor is grounded, and the control unit is connected to a third connection point, and the third connection point is arranged between the first voltage-dividing resistor and the second voltage-dividing resistor, wherein

[0012] the control unit is further configured to obtain the voltage across the second voltage-dividing resistor, and determine whether the charging power supply is externally connected according to the voltage across the second voltage-dividing resistor.

[0013] Optionally, the continuous blood glucose monitoring device further includes a charging device, and the charging device is connected to the switching device, and the charging device is externally connected to the charging power supply, wherein

[0014] the charging device is configured to determine the connection state of the path between the charging power supply and the charging management unit according to the state of the analog switch; and control the indicator light of the charging device to display a corresponding state according to the connection state of the path between the charging power supply and the charging management unit.

[0015] Optionally, the continuous blood glucose monitoring device further includes a third voltage-dividing resistor and a fourth voltage-dividing resistor. The charging management unit is connected to one end of the third voltage-dividing resistor, the other end of the third voltage-dividing resistor is connected to one end of the fourth voltage-dividing resistor, the other end of the fourth voltage-dividing resistor is grounded, and the control unit is connected to a fourth connection point, and the fourth connection point is arranged between the third voltage-dividing resistor and the fourth voltage-dividing resistor, wherein

[0016] the control unit is configured to obtain the voltage across the fourth voltage-dividing resistor; determine the voltage of the battery during the charging process according to the voltage across the fourth voltage-dividing resistor, the resistance value of the third voltage-dividing resistor, and the resistance value of the fourth voltage-dividing resistor; and determine the power of the battery according to the voltage of the battery.

[0017] Optionally, the control unit is further configured to determine the charging stage of the battery according to the voltage of the battery, wherein the charging stage is one of a trickle charging stage, a constant current charging stage, and a constant voltage charging stage;

[0018] determine a target relationship from the corresponding relationship between voltage and power and the corresponding relationship between charging time and power according to the charging stage of the battery;

[0019] Determine the power of the battery based on the target relationship.

[0020] Optionally, the control unit is further configured to determine the corresponding relationship between voltage and power as the target relationship when the charging stage of the battery is the trickle charging stage or the constant current charging stage; and determine the corresponding relationship between charging time and power as the target relationship when the charging stage of the battery is the constant voltage charging stage.

[0021] According to a second aspect of the present invention, there is provided a battery charging control method implemented by a control unit of a continuous glucose monitoring device. The continuous glucose monitoring device further includes a charging management unit, a switching device, and a battery. The control unit is connected to the switching device, the switching device is connected to the charging management unit, the charging management unit is connected to the battery, and the switching device is externally connected to a charging power source. The method includes:

[0022] Obtain the power of the battery when the switching device is in the off state;

[0023] When the power of the battery is less than the first power threshold, control the switching device to close so as to use the charging power source to charge the battery through the charging management unit.

[0024] Optionally, the method further includes: when the power of the battery is greater than the second power threshold, control the switching device to open to disconnect the charging path for the battery through the charging management unit, where

[0025] the second power threshold is greater than the first power threshold.

[0026] The continuous glucose monitoring device provided by the present invention does not require a power meter, reducing production costs. In addition, by setting different corresponding relationships for power based on different charging stages, the accuracy of power estimation can be improved, avoiding the jump phenomenon of power display during the charging process, and ensuring smooth transition and accuracy of power.

[0027] Through the following detailed description of the exemplary embodiments of the present specification with reference to the accompanying drawings, the features and advantages of the embodiments of the present specification will become clear. Description of the Drawings

[0028] The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present specification and, together with the description, are used to explain the principles of the embodiments of the present specification.

[0029] Figure 1 is a schematic diagram of a continuous glucose monitoring device according to an embodiment of the present invention.

[0030] Figure 2 It is a schematic structural diagram of the current change curve and voltage change curve during charging according to an embodiment of the present invention.

[0031] Figure 3 It is a schematic diagram of a continuous blood glucose monitoring device according to an embodiment of the present invention.

[0032] Figure 4 It is a schematic diagram of a continuous blood glucose monitoring device according to an embodiment of the present invention.

[0033] Figure 5 It is a schematic diagram of a continuous blood glucose monitoring device according to an embodiment of the present invention.

[0034] Figure 6 It is a schematic flow diagram of a battery charging control method according to an embodiment of the present invention. Detailed implementation manners

[0035] Various exemplary embodiments of the present specification will now be described in detail with reference to the accompanying drawings.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation on the embodiments of the present specification, their applications, or uses.

[0037] It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0038] In an embodiment of the present invention, a continuous blood glucose monitoring device is provided. As shown Figure 1 The continuous blood glucose monitoring device includes: a control unit, a charging management unit, a switching device, and a battery. The control unit is connected to the switching device, the switching device is connected to the charging management unit, the charging management unit is connected to the battery, and a charging power source is externally connected to the switching device.

[0039] The control unit is the arithmetic control unit of the continuous blood glucose monitoring device. The control unit may be an MCU (Microcontroller Unit).

[0040] The charging management unit is a charging management chip. The charging management chip supplies power externally through the VSYS pin, and the charging management chip accesses the charging power source through the VIN pin. The charging management unit is used to control the charging of the battery.

[0041] The charging management unit controls the charging process of the battery into three stages, namely, the trickle charging stage, the constant current charging stage, and the constant voltage charging stage.

[0042] According to Figure 2As shown, the battery charging curve is divided into three charging stages, namely the trickle charging stage, the constant current charging stage, and the constant voltage charging stage. Each charging curve includes the current change curve and the voltage change curve during the charging process. Among them, the upper half curve is the current change curve, and the lower half curve is the voltage change curve.

[0043] Trickle charging is used to pre-charge or restore a fully discharged battery. According to Figure 3 As shown, the current of trickle charging is small. The purpose is to safely restore the charging ability of the battery and avoid the damage that may be caused by directly performing large current charging when the battery voltage is too low.

[0044] According to Figure 2 As shown, constant current charging refers to a charging method in which the current remains constant during the charging process. The purpose of the constant current charging stage is to quickly replenish the battery power and make the battery voltage rise rapidly to close to its rated voltage.

[0045] According to Figure 2 As shown, in the constant voltage charging stage, the voltage remains almost unchanged while the current gradually decreases. As the battery power increases, the chemical reaction of the battery gradually tends to balance, and the required charging current also decreases accordingly. Constant voltage charging automatically adjusts the charging current according to the change of the battery state of charge to ensure the full charge of the battery.

[0046] The battery can be a lithium battery or other types of batteries.

[0047] The control unit is used to obtain the battery power when the switching device is in the off state; when the battery power is less than the first power threshold, the control unit controls the switching device to close, so that the charging power supply is used to charge the battery through the charging management unit.

[0048] In the continuous blood glucose monitoring device provided by the embodiment of the present invention, when the switching device is in the off state, the external charging power supply cannot charge the battery through the charging management unit. As the working time of the continuous blood glucose monitoring device increases, the battery power gradually decreases. When the battery power is less than the first power threshold, the control unit controls the switching device to close, so that the charging power supply is used to charge the battery through the charging management unit, realizing the automatic recharging of the battery and ensuring the sufficient power of the continuous blood glucose monitoring device at the same time.

[0049] In some embodiments, according to Figure 3 As shown, the continuous blood glucose monitoring device further includes a first voltage dividing resistor R 1 and a second voltage dividing resistor R 2 , one end of the first voltage dividing resistor R 1 is connected to the charging power supply, the other end of the first voltage dividing resistor R 1 is connected to one end of the second voltage dividing resistor R 2 and the other end of the second voltage dividing resistor R2 The other end is grounded, the control unit is connected to the third connection point, and the third connection point is arranged between the first voltage-dividing resistor R 1 and the second voltage-dividing resistor R 2 .

[0050] The control unit is further configured to obtain the voltage across the second voltage-dividing resistor, and determine whether a charging power source is externally connected according to the voltage across the second voltage-dividing resistor. In this way, real-time automatic monitoring of the connection state of the externally connected charging power source is achieved.

[0051] When the voltage across the second voltage-dividing resistor is 0, the control unit determines that no charging power source is externally connected. When the voltage across the second voltage-dividing resistor is not 0, the control unit determines that a charging power source is externally connected.

[0052] In some embodiments, as shown in Figure 4 , the continuous blood glucose monitoring device further includes a sampling resistor R and a coulombmeter. The sampling resistor R is arranged in the circuit between the charging management unit and the battery. One end of the coulombmeter is connected to the first connection point, and the other end of the coulombmeter is connected to the second connection point. The first connection point is arranged between the charging management unit and the sampling resistor, and the second connection point is arranged between the sampling resistor and the battery.

[0053] The coulombmeter is configured to obtain the voltage value across the sampling resistor and send the voltage value across the sampling resistor to the control unit; the control unit is configured to determine the charging current of the battery according to the voltage across the sampling resistor and the resistance value of the sampling resistor; and determine the battery power according to the charging current of the battery.

[0054] The coulombmeter is configured to integrate the charging current of the battery and calculate the power charged into the battery since the start of charging.

[0055] In the embodiment of the present invention, by setting a coulombmeter to determine the battery power, the battery power can be obtained more accurately.

[0056] In some embodiments, as shown in Figure 5 , the continuous blood glucose monitoring device further includes a third voltage-dividing resistor R 3 and a fourth voltage-dividing resistor R 4 . The charging management unit is connected to one end of the third voltage-dividing resistor R 3 . The other end of the third voltage-dividing resistor R 3 is connected to one end of the fourth voltage-dividing resistor R 4 . The other end of the fourth voltage-dividing resistor R 4 is grounded. The control unit is connected to the fourth connection point, and the fourth connection point is arranged between the third voltage-dividing resistor and the fourth voltage-dividing resistor.

[0057] The control unit is used to obtain the voltage across the fourth voltage-dividing resistor; determine the voltage of the battery during the charging process according to the voltage across the fourth voltage-dividing resistor, the resistance value of the third voltage-dividing resistor, and the resistance value of the fourth voltage-dividing resistor; and determine the battery power according to the voltage of the battery.

[0058] Specifically, the control unit is used to calculate the voltage value across the third voltage-dividing resistor according to the resistance value of the third voltage-dividing resistor, the resistance value of the fourth voltage-dividing resistor, and the voltage value across the fourth voltage-dividing resistor, and then calculate the sum of the voltage value across the third voltage-dividing resistor and the voltage value across the fourth voltage-dividing resistor as the voltage value of the battery during the charging process of the continuous blood glucose monitoring device.

[0059] The control unit is also specifically used to determine the charging stage of the battery according to the voltage of the battery, where the charging stage is one of the trickle charging stage, the constant current charging stage, and the constant voltage charging stage; determine the target relationship from the corresponding relationship between voltage and power and the corresponding relationship between charging time and power according to the charging stage of the battery; and determine the battery power based on the target relationship.

[0060] In some embodiments, the voltage range corresponding to the trickle charging stage, the voltage range corresponding to the constant current charging stage, and the voltage range corresponding to the constant voltage charging stage are pre-stored. The voltage of the battery is compared with the voltage ranges corresponding to each charging stage respectively to determine the voltage range corresponding to the charging stage to which the voltage of the battery belongs, and the charging stage of the battery is determined according to the voltage range corresponding to the charging stage to which the voltage of the battery belongs. For different models of batteries, the voltage ranges corresponding to the trickle charging stage, the constant current charging stage, and the constant voltage charging stage are different.

[0061] In some embodiments, a first voltage demarcation value and a second voltage demarcation value are pre-stored. The first voltage demarcation value is the voltage demarcation value between the trickle charging stage and the constant current charging stage. The second voltage demarcation value is the voltage demarcation value between the constant current charging stage and the constant voltage charging stage. First, according to the first voltage demarcation value and the second voltage demarcation value, the voltage range corresponding to the trickle charging stage, the voltage range corresponding to the constant current charging stage, and the voltage range corresponding to the constant voltage charging stage are determined. The voltage of the battery is compared with the voltage ranges corresponding to each charging stage respectively to determine the voltage range corresponding to the charging stage to which the voltage value of the battery belongs, and the charging stage of the battery is determined according to the voltage range corresponding to the charging stage to which the voltage value of the battery belongs. For different models of batteries, the first voltage demarcation value and the second voltage demarcation value are different.

[0062] The control unit is further configured to determine the corresponding relationship between voltage and power as the target relationship when the charging stage of the battery is the trickle charging stage or the constant current charging stage; and determine the corresponding relationship between charging time and power as the target relationship when the charging stage of the battery is the constant voltage charging stage.

[0063] The corresponding relationship between voltage and power and the corresponding relationship between charging time and power are both pre-stored relationships and can be directly obtained. For different models of batteries, the corresponding relationship between voltage and power and the corresponding relationship between charging time and power are different and can be determined according to the actual data during the battery charging process.

[0064] When the charging stage of the battery is the trickle charging stage or the constant current charging stage, determine the corresponding relationship between voltage and power as the target relationship. The corresponding relationship between voltage and power includes the first corresponding relationship between voltage and power and the second corresponding relationship between voltage and power. The first corresponding relationship between voltage and power is the corresponding relationship between voltage and power corresponding to the trickle charging stage, and the second corresponding relationship between voltage and power is the corresponding relationship between voltage and power corresponding to the constant current charging stage. When the charging stage of the battery is the constant voltage charging stage, determine the corresponding relationship between charging time and power as the target relationship.

[0065] When the charging stage of the battery is the trickle charging stage, determine the charging power of the continuous blood glucose monitoring device according to the voltage of the battery and the first corresponding relationship between voltage and power.

[0066] When the charging stage of the battery is the constant current charging stage, determine the charging power of the continuous blood glucose monitoring device according to the voltage of the battery and the second corresponding relationship between voltage and power.

[0067] When the charging stage of the battery is the constant current charging stage, obtain the charging time of the battery, and determine the charging power of the continuous blood glucose monitoring device according to the charging time of the battery and the corresponding relationship between charging time and power. The charging time of the battery starts from when the battery enters the constant voltage charging stage.

[0068] The continuous blood glucose monitoring device provided by the embodiments of the present invention does not need to be provided with a fuel gauge, which reduces the production cost. In addition, based on different charging stages, different corresponding relationships of power are set, which can improve the accuracy of power estimation, avoid the jump phenomenon of power display during the charging process, and ensure the smooth transition and accuracy of power.

[0069] It should be noted that the continuous blood glucose monitoring device may include Figure 4 the fuel gauge shown in Figure 5 and the power determination circuit shown in (the third voltage dividing resistor R 3 and the fourth voltage dividing resistor R4 ) In this way, the control unit obtains the power levels of the two batteries. When the difference between the power levels of the two batteries is less than a preset difference, the control unit selects the power level of any one of the batteries to participate in subsequent operations. When the difference between the power levels of the two batteries is greater than or equal to the preset difference, the control unit selects the power level of the battery determined based on the fuel gauge to participate in subsequent operations.

[0070] In some embodiments, the control unit is further configured to control the switching device to disconnect when the power level of the battery is greater than a second power threshold, so as to disconnect the charging path for the battery through the charging management unit. The second power threshold is greater than the first power threshold. The second power threshold is the power level corresponding to when the battery is fully charged. In this way, when the power level of the battery reaches the power level corresponding to when the battery is fully charged, the control unit timely disconnects the switching device, and further disconnects the charging path for the battery through the charging management unit, avoiding the problem of shortened battery life caused by overcharging the battery, and playing a role in protecting the battery.

[0071] In some embodiments, the continuous blood glucose monitoring device further includes a charging device. The charging device is connected to the switching device and is externally connected to a charging power source. The charging device is configured to determine the state of the path between the charging power source and the charging management unit according to the state of the analog switch; and control the indicator light of the charging device to display a corresponding state according to the state of the path between the charging power source and the charging management unit.

[0072] The charging device includes a charging control chip and an indicator light. The charging control chip is configured to control the indicator light to display a corresponding state.

[0073] When the analog switch is in the off state, the state of the path between the charging power source and the charging management unit is off, and the charging device controls the indicator light not to emit light. When the analog switch is in the on state, the state of the path between the charging power source and the charging management unit is on, and the charging device controls the indicator light to emit light.

[0074] The continuous blood glucose monitoring device provided by the embodiments of the present invention can ensure that the charging state of the battery is consistent with the display state of the indicator light of the charging device, improving the accuracy of the display state of the indicator light of the charging device.

[0075] An embodiment of the present invention further provides a battery charging control method. The battery charging control method is implemented by the control unit of the continuous blood glucose monitoring device. The continuous blood glucose monitoring device further includes a charging management unit, a switching device, and a battery. The control unit is connected to the switching device, the switching device is connected to the charging management unit, the charging management unit is connected to the battery, and the switching device is externally connected to a charging power source.

[0076] According to Figure 6 as shown, the method includes steps S610 to S620.

[0077] Step S610, when the switching device is in the off state, obtain the power of the battery.

[0078] Step S620, when the power of the battery is less than the first power threshold, control the switching device to close, so that the charging power supply is used to charge the battery through the charging management unit.

[0079] In some embodiments, the method further includes: when the power of the battery is greater than the second power threshold, control the switching device to open to disconnect the charging path of the battery through the charging management unit, where the second power threshold is greater than the first power threshold.

[0080] In some embodiments, the continuous blood glucose monitoring device further includes a sampling resistor and a coulomb meter. The sampling resistor is disposed in the circuit between the charging management unit and the battery. One end of the coulomb meter is connected to the first connection point, and the other end of the coulomb meter is connected to the second connection point. The first connection point is disposed between the charging management unit and the sampling resistor, and the second connection point is disposed between the sampling resistor and the battery. The method further includes: obtaining the voltage value across the sampling resistor; determining the charging current of the battery according to the voltage across the sampling resistor and the resistance value of the sampling resistor; and determining the power of the battery according to the charging current of the battery.

[0081] In some embodiments, the continuous blood glucose monitoring device further includes a first voltage dividing resistor and a second voltage dividing resistor. One end of the first voltage dividing resistor is connected to the charging power supply, the other end of the first voltage dividing resistor is connected to one end of the second voltage dividing resistor, the other end of the second voltage dividing resistor is grounded, and the control unit is connected to the third connection point. The third connection point is disposed between the first voltage dividing resistor and the second voltage dividing resistor. The method further includes: the control unit is further configured to obtain the voltage across the second voltage dividing resistor and determine whether a charging power supply is externally connected according to the voltage across the second voltage dividing resistor.

[0082] In some embodiments, the continuous blood glucose monitoring device further includes a third voltage dividing resistor and a fourth voltage dividing resistor. The charging management unit is connected to one end of the third voltage dividing resistor, the other end of the third voltage dividing resistor is connected to one end of the fourth voltage dividing resistor, the other end of the fourth voltage dividing resistor is grounded, and the control unit is connected to the fourth connection point. The fourth connection point is disposed between the third voltage dividing resistor and the fourth voltage dividing resistor. The method further includes: obtaining the voltage across the fourth voltage dividing resistor; determining the voltage of the battery during the charging process according to the voltage across the fourth voltage dividing resistor, the resistance value of the third voltage dividing resistor, and the resistance value of the fourth voltage dividing resistor; and determining the power of the battery according to the voltage of the battery.

[0083] In some embodiments, the method further includes: determining a charging stage of the battery according to the voltage of the battery, where the charging stage is one of a trickle charging stage, a constant current charging stage, and a constant voltage charging stage; determining a target relationship from the corresponding relationship between voltage and power and the corresponding relationship between charging time and power according to the charging stage of the battery; and determining the power of the battery based on the target relationship.

[0084] In some embodiments, the method further includes: determining the corresponding relationship between voltage and power as the target relationship when the charging stage of the battery is the trickle charging stage or the constant current charging stage; and determining the corresponding relationship between charging time and power as the target relationship when the charging stage of the battery is the constant voltage charging stage.

[0085] Each embodiment in this specification is described in a progressive manner, and the same or similar parts among the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0086] The above describes specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve the desired results. Additionally, the processes depicted in the figures do not necessarily require the particular order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0087] The embodiments of this specification can be a system, a method, and / or a computer program product. The computer program product can include a computer-readable storage medium having computer instructions thereon for causing a processor to implement various aspects of the embodiments of this specification.

[0088] A computer-readable storage medium can be a tangible device that can retain and store computer instructions for use by a computer instruction execution device. A computer-readable storage medium can be, for example, but is not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disc (DVD), a memory stick, a floppy disk, a mechanically encoded device such as a punched card or raised structures in grooves storing computer instructions thereon, and any suitable combination of the foregoing. The computer-readable storage medium used herein is not construed as being a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagated through a waveguide or other transmission medium (e.g., an optical pulse through an optical fiber cable), or an electrical signal transmitted through a wire.

[0089] The computer instructions described herein can be downloaded from the computer-readable storage medium to various computing / processing devices, or downloaded to an external computer or external storage device through a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include a copper transmission cable, an optical fiber transmission, a wireless transmission, a router, a firewall, a switch, a gateway computer, and / or an edge server. A network adapter or network interface in each computing / processing device receives the computer instructions from the network and forwards the computer instructions for storage in the computer-readable storage medium in each computing / processing device.

[0090] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present specification. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a portion of computer instructions, which contains one or more executable computer instructions for implementing a specified logical function. In some alternative implementations, the functions noted in the blocks may occur in a different order than that noted in the accompanying drawings. For example, two consecutive blocks may actually be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions. As is well known to those skilled in the art, implementation by hardware, implementation by software, and implementation by a combination of software and hardware are equivalent.

[0091] The embodiments of the present specification have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A continuous blood glucose monitoring device, characterized in that: include: A control unit, a charging management unit, a switch device and a battery, wherein the control unit is connected to the switch device, the switch device is connected to the charging management unit, the charging management unit is connected to the battery, and the switch device is externally connected to a charging power source, wherein: The control unit is used to obtain the power of the battery when the switch device is in an open state; when the power of the battery is less than a first power threshold, control the switch device to close, so that the charging power supply is used to charge the battery through the charging management unit.

2. The continuous blood glucose monitoring device according to claim 1, characterized in that: The control unit is further configured to control the switch device to be disconnected when the power level of the battery is greater than a second power level threshold, so as to disconnect the path for charging the battery through the charging management unit, wherein: The second power threshold is greater than the first power threshold.

3. The continuous blood glucose monitoring device according to claim 1, characterized in that: The continuous blood glucose monitoring device further includes a sampling resistor and a fuel gauge, wherein the sampling resistor is arranged in a circuit between the charging management unit and the battery, one end of the fuel gauge is connected to a first connection point, and the other end of the fuel gauge is connected to a second connection point, wherein the first connection point is arranged between the charging management unit and the sampling resistor, and the second connection point is arranged between the sampling resistor and the battery, wherein: The fuel gauge is used to obtain the voltage value across the sampling resistor and send the voltage value across the sampling resistor to the control unit; The control unit is used to determine the charging current of the battery according to the voltage across the sampling resistor and the resistance value of the sampling resistor; and determine the power level of the battery according to the charging current of the battery.

4. The continuous blood glucose monitoring device according to claim 1, characterized in that: The continuous blood glucose monitoring device further includes a first voltage-dividing resistor and a second voltage-dividing resistor, one end of the first voltage-dividing resistor is connected to the charging power supply, the other end of the first voltage-dividing resistor is connected to one end of the second voltage-dividing resistor, the other end of the second voltage-dividing resistor is grounded, the control unit is connected to a third connection point, and the third connection point is arranged between the first voltage-dividing resistor and the second voltage-dividing resistor, wherein, The control unit is further configured to obtain a voltage across the second voltage-dividing resistor, and determine whether the charging power source is externally connected according to the voltage across the second voltage-dividing resistor.

5. The continuous blood glucose monitoring device according to claim 1, characterized in that: The continuous blood glucose monitoring device further comprises a charging device, which is connected to the switch device and is externally connected to the charging power source, wherein: The charging device is used to determine the connection state of the path between the charging power source and the charging management unit according to the state of the analog switch; and control the indicator light of the charging device to display the corresponding state according to the connection state of the path between the charging power source and the charging management unit.

6. The continuous blood glucose monitoring device according to claim 1, characterized in that: The continuous blood glucose monitoring device further includes a third voltage-dividing resistor and a fourth voltage-dividing resistor, the charging management unit is connected to one end of the third voltage-dividing resistor, the other end of the third voltage-dividing resistor is connected to one end of the fourth voltage-dividing resistor, the other end of the fourth voltage-dividing resistor is grounded, the control unit is connected to a fourth connection point, and the fourth connection point is arranged between the third voltage-dividing resistor and the fourth voltage-dividing resistor, wherein, The control unit is used to obtain the voltage across the fourth voltage-dividing resistor; determine the voltage of the battery during the charging process according to the voltage across the fourth voltage-dividing resistor, the resistance value of the third voltage-dividing resistor and the resistance value of the fourth voltage-dividing resistor; and determine the battery power according to the battery voltage.

7. The continuous blood glucose monitoring device according to claim 1, characterized in that: The control unit is further used to determine the charging stage of the battery according to the voltage of the battery, wherein the charging stage is one of a trickle charging stage, a constant current charging stage and a constant voltage charging stage; According to the charging stage of the battery, a target relationship is determined from a corresponding relationship between voltage and power and a corresponding relationship between charging time and power; Based on the target relationship, the power level of the battery is determined.

8. The continuous blood glucose monitoring device according to claim 7, characterized in that: The control unit is also used to determine that the corresponding relationship between voltage and power is the target relationship when the charging stage of the battery is a trickle charging stage or a constant current charging stage; and to determine that the corresponding relationship between charging time and power is the target relationship when the charging stage of the battery is a constant voltage charging stage.

9. A battery charging control method, characterized in that: The method is implemented by a control unit of a continuous blood glucose monitoring device, wherein the continuous blood glucose monitoring device further comprises a charging management unit, a switch device and a battery, wherein the control unit is connected to the switch device, the switch device is connected to the charging management unit, the charging management unit is connected to the battery, and the switch device is externally connected to a charging power source, wherein the method comprises: When the switch device is in an off state, obtaining the power of the battery; When the power level of the battery is less than a first power level threshold, the switch device is controlled to be closed, so that the charging power source is used to charge the battery through the charging management unit.

10. The method according to claim 9, characterized in that The method further includes: when the power level of the battery is greater than a second power threshold, controlling the switch device to be disconnected so as to disconnect the path for charging the battery through the charging management unit, wherein: The second power threshold is greater than the first power threshold.

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