A charging control device for reducing static power consumption

Abstract

The present application belongs to the technical field of battery charging chips, and particularly relates to a charging control device for reducing static power consumption. It includes a charging chip unit connected to a battery unit through an input pin VBAT, and connected to a load unit through an output pin VSYS. The battery unit can supply power to the load unit through the charging chip unit, and also includes: a bypass load switch unit having an input pin VIN, an output pin VOUT, and an enable pin EN. The bypass load switch unit is connected to the battery unit through the input pin VIN, and connected to the load unit through the output pin VOUT; the MCU unit has a first control pin SCL, SDA, and a second control pin GPIOA. The MCU unit is connected to the MOS tube control pins SCL and SDA of the charging chip unit through the first control pins SCL and SDA, and is connected to the enable pin EN of the bypass load switch unit through the second control pin GPIOA. The present application reduces static power consumption, extends battery life, and improves overall energy efficiency.

Description

Technical Field

[0001] The present application belongs to the technical field of battery charging chips, and in particular relates to a charging control device for reducing static power consumption. Background Art

[0002] With the widespread use of mobile electronic devices, higher requirements are placed on the battery life of the devices. In the charging management circuit, the charging control chip is one of the core components, and its static power consumption directly affects the energy efficiency and battery life of the entire system.

[0003] Traditional charging control chips usually integrate MOS tubes to control the charging path. This type of charging control chip has the following defects: high static power consumption. The MOS tube in the charging control chip remains active in the machine sleep mode, resulting in high static current consumption even when the system is not active, resulting in static power consumption of up to 85ua, which is a significant defect for low-power product design; short battery life. Due to high static power consumption, battery energy will continue to be lost during non-working hours, resulting in a significant reduction in the battery life of the device, which is particularly disadvantageous for portable devices that rely on battery power; low energy efficiency, failure to effectively manage power consumption, especially when the device is in low power or sleep mode, and cannot achieve the best energy efficiency ratio.

[0004] In order to reduce static power consumption, existing solutions generally cut off or reduce the power supply of non-critical circuits by introducing complex power management strategies and additional circuit components, thereby reducing static current consumption. However, these solutions contain functions that are not universal in many scenarios, which increases the complexity and cost of the design; in addition, these solutions are not flexible enough and cannot adjust the power management strategy according to different working conditions or environmental requirements, which limits their effectiveness in different application scenarios and their lack of adaptability.

[0005] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Utility Model Content

[0006] The purpose of this application is to provide a charging control device for reducing static power consumption, so as to solve the problems of high static power consumption, short battery life and low energy efficiency existing in the charging control chip in the prior art.

[0007] The technical solution of this application is:

[0008] A charging control device for reducing static power consumption, comprising a battery unit, a load unit and a charging chip unit, wherein the charging chip unit has an input pin VBAT, an output pin VSYS and MOS tube control pins SCL and SDA, the charging chip unit is connected to the battery unit via the input pin VBAT, and is connected to the load unit via the output pin VSYS, the battery unit can supply power to the load unit via the charging chip unit, and further comprises:

[0009] A bypass load switch unit, wherein the bypass load switch unit has an input pin VIN, an output pin VOUT and an enable pin EN, and the bypass load switch unit is connected to the battery unit through the input pin VIN and connected to the load unit through the output pin VOUT;

[0010] An MCU unit, wherein the MCU unit has a first control pin SCL, SDA and a second control pin GPIOA, wherein the MCU unit is connected to the MOS tube control pins SCL, SDA of the charging chip unit through the first control pins SCL, SDA, and is connected to the enable pin EN of the bypass load switch unit through the second control pin GPIOA;

[0011] in,

[0012] The MCU unit sends a MOS tube control instruction to the MOS tube control pins SCL and SDA of the charging chip unit through the first control pins SCL and SDA to control the opening or closing of the MOS tube inside the charging chip unit;

[0013] The MCU unit sends a switch control instruction to the enable pin EN of the bypass load switch unit through the second control pin GPIOA to control the opening or closing of the bypass load switch unit.

[0014] In at least one embodiment of the present application, the battery unit adopts a lithium battery pack with model number 18650 or 21700.

[0015] In at least one embodiment of the present application, the charging chip unit adopts a charging chip model SD7601D.

[0016] In at least one embodiment of the present application, the bypass load switch unit adopts a switch chip of model GLF72100.

[0017] In at least one embodiment of the present application, the first control pins SCL and SDA of the MCU unit send MOS tube control instructions to the MOS tube control pins SCL and SDA of the charging chip unit through the I2C protocol.

[0018] In at least one embodiment of the present application,

[0019] The MCU unit sends a high level to the enable pin EN of the bypass load switch unit through the second control pin GPIOA to control the bypass load switch unit to turn on;

[0020] The MCU unit sends a low level to the enable pin EN of the bypass load switch unit through the second control pin GPIOA to control the bypass load switch unit to be turned off.

[0021] The utility model has at least the following beneficial technical effects:

[0022] The charging control device for reducing static power consumption of the present application effectively reduces static power consumption by introducing an external bypass load switch unit to replace the internal MOS tube and combining it with the control of a microcontroller unit (MCU), thereby extending the battery life of low-power products in sleep mode, reducing energy waste, and improving overall energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a block diagram of a charging chip unit according to an embodiment of the present application;

[0024] Figure 2 is a schematic diagram of a charging control device for reducing static power consumption according to an embodiment of the present application;

[0025] Figure 3 is a circuit diagram of a charging chip unit according to an embodiment of the present application;

[0026] Figure 4 is a circuit diagram of a bypass load switch unit according to an embodiment of the present application;

[0027] Figure 5 This is a circuit diagram of an MCU unit according to one embodiment of the present application.

[0028] in:

[0029] 1-battery unit; 2-load unit; 3-charging chip unit; 4-bypass load switch unit; 5-MCU unit. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0032] The following is combined with Figures 1 to 5 This application is described in further detail.

[0033] like Figure 1 As shown, the charging chip unit 3 has an input pin VBAT connected to the battery unit 1, and an output pin VSYS connected to the load unit 1. The battery unit 1 can supply power to the load unit 2 through the charging chip unit 3. The charging chip unit 3 has a MOS tube (BATFET) integrated inside. When the battery unit 1 supplies power to the load unit 2, it needs to pass through a MOS tube to control the charging path. According to the chip specification, the MOS tube built into the charging chip of the SD7601D can leak up to 85ua in sleep mode.

[0034] In order to solve the problems of high static power consumption, short battery life and low energy efficiency of the charging control chip, the present application provides a charging control device for reducing static power consumption. Based on the battery unit 1, the load unit 2 and the charging chip unit 3, a bypass load switch unit 4 and an MCU unit 5 are introduced.

[0035] like Figure 2As shown, the charging chip unit 3 also has MOS control pins SCL and SDA, the bypass load switch unit 4 has an input pin VIN, an output pin VOUT and an enable pin EN, the bypass load switch unit 4 is connected to the battery unit 1 through the input pin VIN, and is connected to the load unit 2 through the output pin VOUT; the MCU unit 5 has a first control pin SCL, SDA and a second control pin GPIOA, the MCU unit 5 is connected to the MOS control pins SCL and SDA of the charging chip unit 3 through the first control pins SCL and SDA, and is connected to the enable pin EN of the bypass load switch unit 4 through the second control pin GPIOA. The MCU unit 5 sends a MOS control instruction to the MOS control pins SCL and SDA of the charging chip unit 3 through the first control pins SCL and SDA to control the opening or closing of the MOS tube inside the charging chip unit 3; the MCU unit 5 sends a switch control instruction to the enable pin EN of the bypass load switch unit 4 through the second control pin GPIOA to control the opening or closing of the bypass load switch unit 4.

[0036] In the preferred embodiment of the present application, the battery unit 1 adopts a lithium battery pack of model 18650 or 21700, and the charging chip unit 3 adopts a charging chip of model SD7601D (see Figure 3 ), the bypass load switch unit 4 uses a switch chip model GLF72100 (see Figure 4 ).

[0037] In the preferred embodiment of the present application, the circuit diagram of the MCU unit 5 is as follows: Figure 5 As shown, the first control pins SCL and SDA of the MCU unit 5 send MOS tube control instructions to the MOS tube control pins SCL and SDA of the charging chip unit 3 through the I2C protocol. The MCU unit 5 sends a high level to the enable pin EN of the bypass load switch unit 4 through the second control pin GPIOA to control the bypass load switch unit 4 to turn on; the MCU unit 5 sends a low level to the enable pin EN of the bypass load switch unit 4 through the second control pin GPIOA to control the bypass load switch unit 4 to turn off.

[0038] The charging control device for reducing static power consumption of the present application has the following charging control process:

[0039] a. When the load unit 2 enters the sleep mode, the first control pins SDA and SCL of the MCU unit 5 send MOS tube control instructions to the 5th and 6th pins of the charging chip SD7610D through the I2C protocol to turn off the MOS tube inside the charging chip unit 3; at the same time, the second control pin GPIOA of the MCU unit 5 outputs a high level to the BYPASS-EN network, pulls up the enable pin EN of the switch chip GLF72100, and turns on the bypass load switch unit 4 to power the load unit 2.

[0040] Among them, the MCU unit 5 sends the instruction BATFET disabled to the charging chip SD7610D, and after turning off its internal MOS tube, the static current drops to 33ua, which can save 85-33=52ua. The MCU unit 5 turns on the external switch chip GLF72100 to replace the MOS tube inside the charging chip SD7610D. The leakage of the switch chip GLF72100 is only 0.45ua, which is a significant improvement compared with the leakage of 85ua of the MOS tube inside the charging chip SD7610D.

[0041] b. When the load unit 2 exits the sleep mode, the first control pins SDA and SCL of the MCU unit 5 send MOS tube control instructions to the 5th and 6th pins of the charging chip SD7610D through the I2C protocol, turning on the MOS tube inside the charging chip unit 3 to power the load unit 2; at the same time, the second control pin GPIOA of the MCU unit 2 outputs a low level to the BYPASS-EN network, pulling down the enable pin EN of the switch chip GLF72100, and turning off the bypass load switch unit 4 to power the load unit 2.

[0042] The charging control device for reducing static power consumption of the present application intelligently judges the working status of the machine through the MCU unit 5, and when the load unit 2 does not need high-performance computing and enters the machine sleep mode, issues an instruction to switch the MOS tube inside the charging chip unit 3 to the external bypass load switch unit 4, and controls the charging path through the external bypass load switch unit 4 instead of the MOS tube inside the charging chip unit 3, thereby reducing static power consumption.

[0043] The charging control device for reducing static power consumption of the present application can significantly reduce the static power consumption of the MOS tube inside the charging chip unit 3 when the machine is in sleep mode without affecting the charging efficiency by introducing an external bypass load switch chip and intelligent MCU control, thereby extending the battery life of low-power products, reducing energy waste, and improving overall energy efficiency; at the same time, it can also simplify the design and reduce costs, providing designers with more flexibility, so that they can design low-power products with extremely high battery life without increasing the battery capacity.

[0044] The charging control device for reducing static power consumption of the present application has the following beneficial effects:

[0045] a. Reduce static power consumption and extend battery life: By turning off the MOS tube inside the charging chip and activating the external bypass load switch chip when the machine is in sleep mode, the static current consumption is significantly reduced from 85ua to 33ua, which helps to extend the battery life of battery-powered devices.

[0046] b. Improved energy efficiency: Due to the reduction of static power consumption, the overall energy efficiency is improved, which is especially important for mobile devices that rely on batteries, as it can reduce the charging frequency and extend the usage time after a single charge.

[0047] c. Reduced heat generation: Reduced static power consumption also means less heat generated by power dissipation, which helps keep the operating temperature of the device within the ideal range and improves the stability and service life of the device.

[0048] d. Simplified circuit design: Circuit design is simplified by introducing external bypass load switch chips and intelligent MCU control, eliminating the need for complex power management strategies or additional circuit components, which may reduce production costs.

[0049] e. Enhanced user experience: Due to the extended battery life and stable device performance, users will experience a smoother and worry-free experience during use, which is an important improvement over existing technologies.

[0050] f. Strong adaptability: The power management strategy can be adjusted according to different working conditions or environmental requirements, so that it can maintain the advantages of high efficiency and low power consumption in different application scenarios.

[0051] g. Strong practicability: It is suitable for various electronic devices that require optimized power consumption management, has strong practicability and market potential, and shows significant advantages in economic benefits, user experience and environmental friendliness.

[0052] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A charging control device for reducing static power consumption, comprising a battery unit (1), a load unit (2) and a charging chip unit (3), wherein the charging chip unit (3) has an input pin VBAT, an output pin VSYS and MOS tube control pins SCL and SDA, wherein the charging chip unit (3) is connected to the battery unit (1) via the input pin VBAT and connected to the load unit (2) via the output pin VSYS, wherein the battery unit (1) can supply power to the load unit (2) via the charging chip unit (3), wherein: Also includes: A bypass load switch unit (4), the bypass load switch unit (4) having an input pin VIN, an output pin VOUT and an enable pin EN, the bypass load switch unit (4) being connected to the battery unit (1) via the input pin VIN, and being connected to the load unit (2) via the output pin VOUT; An MCU unit (5), the MCU unit (5) having a first control pin SCL, SDA and a second control pin GPIOA, the MCU unit (5) being connected to the MOS tube control pins SCL, SDA of the charging chip unit (3) via the first control pins SCL, SDA, and being connected to the enable pin EN of the bypass load switch unit (4) via the second control pin GPIOA; in, The MCU unit (5) sends MOS tube control instructions to the MOS tube control pins SCL and SDA of the charging chip unit (3) through the first control pins SCL and SDA, so as to control the opening or closing of the MOS tube inside the charging chip unit (3); The MCU unit (5) sends a switch control instruction to the enable pin EN of the bypass load switch unit (4) via the second control pin GPIOA, thereby controlling the opening or closing of the bypass load switch unit (4).

2. The charging control device for reducing static power consumption according to claim 1, characterized in that: The battery unit (1) adopts a lithium battery pack with a model of 18650 or 21700.

3. The charging control device for reducing static power consumption according to claim 1, characterized in that: The charging chip unit (3) adopts a charging chip of model SD7601D.

4. The charging control device for reducing static power consumption according to claim 1, characterized in that: The bypass load switch unit (4) adopts a switch chip of model GLF72100.

5. The charging control device for reducing static power consumption according to claim 1, characterized in that: The first control pins SCL and SDA of the MCU unit (5) send MOS tube control instructions to the MOS tube control pins SCL and SDA of the charging chip unit (3) through the I2C protocol.

6. The charging control device for reducing static power consumption according to claim 1, characterized in that: The MCU unit (5) sends a high level to the enable pin EN of the bypass load switch unit (4) through the second control pin GPIOA, thereby controlling the bypass load switch unit (4) to be turned on; The MCU unit (5) sends a low level to the enable pin EN of the bypass load switch unit (4) via the second control pin GPIOA, thereby controlling the bypass load switch unit (4) to be turned off.

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