CN221150985U - Power management control system based on EC control chip - Google Patents

Abstract

The utility model discloses a power management control system based on an EC (electronic control) chip, which mainly takes EC (embedded controller) control as a core, and a charging module is compatible with charging of single-core to 4-string battery cells. When using different battery cells, the method is realized by automatically adapting the voltages of the different battery cells and writing charging information by the EC controller. The EC controller collects protocol chip information in the charging module through the I2C, battery electricity meter information and charging chip information, comprehensively judges and controls, adjusts charging voltage and current in real time to realize stable operation of the system, and further realizes intelligent identification and quick charging. In addition, the EC controller is connected with a keyboard through a KBC (keyboard controller) with the EC controller, and the I2C (human-computer switching system) is connected with a touch pad to perform input control and then transmitted to the SOC through a USB2.0 interface. LED lamp control, system power supply on and off control and the like are performed through GPIO.

Description

Power management control system based on EC control chip

Technical Field

The utility model relates to the technical field of intelligent control, in particular to a power management control system based on an EC control chip.

Background

Along with the continuous improvement of ARM technology, computers are not limited to an X86 architecture, but are applied to computers of an ARM architecture, power management needs PMU (power management unit) control and input/output equipment needs SOC processing, the capability requirement on system software is extremely high, popularization of products is not facilitated, ARM products are applied based on single-string batteries, the charging voltage of a battery end can only reach 4.35V at most, charging current is limited to the PMU and the single-string batteries, charging power cannot be improved, and charging speed is low.

Disclosure of utility model

The utility model aims to make up the defects of the prior art and provides a power management control system based on an EC control chip. The method can be used for improving the existing low charging speed and poor compatibility of the battery cells of the equipment, and solves the problems of input and output equipment and complicated power management.

The utility model is realized by the following technical scheme:

The power management control system based on the EC control chip comprises an EC controller, and a charging module, a keyboard, a touch pad, an LED lamp display unit and an SOC system end which are connected with the EC controller, wherein the charging module comprises a charging adapter interface, a fast charging protocol identification chip, a charging chip and a battery component, the charging adapter interface is connected with the input end of the fast charging protocol identification chip, the output end of the fast charging protocol identification chip is connected with the input end of the charging chip, the output end of the charging chip is connected with the input end of the battery component, and the fast charging protocol identification chip, the charging chip and the battery component are respectively connected with the EC controller.

The EC controller adopts a singlechip 8032 as a core processing unit, and integrates a keyboard controller, a general input/output port, an integrated circuit interconnection bus, a USB interface and a PWM pulse width modulation unit; the EC controller is respectively connected with the quick charge protocol identification chip, the charging chip, the battery assembly and the touch pad through the integrated circuit interconnection bus, is connected with the SOC system end through the integrated circuit interconnection bus and the USB interface, is connected with the keyboard through the keyboard controller, and is connected with the LED lamp display unit through the general input and output port.

The battery assembly comprises a battery, a battery protection board, an electricity meter and a charging control unit, wherein the battery is any one of one to four batteries, and the electricity meter and the charging control unit are connected with the EC controller.

The fast charge protocol identification chip adopts a south core SC2001, and the charging chip adopts a south core SC8886.

The utility model has the advantages that: the utility model is compatible with the charge control of 1-4cells (four batteries), and has high practicability, low self-loss power consumption and low cost.

According to the utility model, the safety and stability of the charging circuit are ensured by the EC controller and the real-time detection and real-time control.

The utility model can control the charging, integrate the control of the keyboard and the touch pad, transmit to the system side SOC through the USB interface, facilitate the management of the power supply data, check the charging condition of the power supply in real time, and facilitate the judgment of the power supply fault.

The utility model can control the LED display through the GPIO port of the EC chip, can control the system end power supply EN pin, and can ensure that the system end function and the power consumption reach the required level. The EC controller can monitor the charging module in real time, and if overcurrent or overvoltage exceeds a preset protection value, the system can stop charging so as to avoid damaging the battery or circuit components.

Drawings

Fig. 1 is a block diagram of the structure of the present utility model.

FIG. 2 is a schematic diagram of a charging module connected to an EC controller according to the present utility model;

FIG. 3 is a schematic diagram of the internal structure of the charging module according to the present utility model;

fig. 4 is a circuit diagram of the connection between the charging module and the EC controller according to the present utility model.

Detailed Description

As shown in fig. 1-4, a power management control system based on an EC control chip includes an EC controller 2, a charging module 1, a keyboard 3, a touch pad 4, an LED light display unit 7 and an SOC system terminal 5 connected with the EC controller 2, and a control system peripheral power supply line 6 connected with the EC controller 2, where the charging module 1 includes a charging adapter interface 11, a fast charging protocol identification chip 12, a charging chip 13 and a battery component 14, the charging adapter interface 11 is connected with an input terminal of the fast charging protocol identification chip 12, an output terminal of the fast charging protocol identification chip 12 is connected with an input terminal of the charging chip 13, an output terminal of the charging chip 13 is connected with an input terminal of the battery component 14, and the fast charging protocol identification chip 12, the charging chip 13 and the battery component 14 are respectively connected with the EC controller 2. The charging adapter interface 11, the rapid charging protocol identification chip 12 and the charging chip 13 are respectively connected with the metal oxide semiconductor field effect transistor switch 15.

The EC controller 2 adopts a singlechip 8032 as a core processing unit, and integrates a keyboard controller, a general input/output port, an integrated circuit interconnection bus, a USB interface and a PWM pulse width modulation unit; the EC controller 2 is respectively connected with the quick charge protocol identification chip 12, the charging chip 13, the battery component 14 and the touch pad 4 through an integrated circuit interconnection bus, is connected with the SOC system end 5 through an integrated circuit interconnection bus and a USB interface, is connected with the keyboard through a keyboard controller, and is connected with the LED lamp display unit 7 through a general input/output port.

The battery assembly 14 includes a battery, a battery protection board, a fuel gauge and a charging control unit, wherein the battery is any one of one to four batteries, and the fuel gauge and the charging control unit are connected with the EC controller.

The integrated circuit (EC) controller 2 in the utility model adopts a Union IT8911 chip, the inside of which mainly takes a singlechip 8032 as a core processing unit, and is internally integrated with KBC (keyboard controller), GPIO (general purpose input output port), I2C (integrated circuit interconnection bus), ADC (digital-to-analog conversion), USB (universal serial bus), PWM (pulse width modulation) and other units.

The EC controller 2 collects and configures related parameters such as a charging module and a battery through an I2C (integrated circuit interconnect bus), and transmits collected data information to the system side SOC through the I2C.

The EC controller 2 is connected with the keyboard 3 through KBC and is used for processing input signals of the keyboard; and transmits it to the system side SOC through USB.

The EC controller 2 is used for controlling the on or off of the LED lamp display through the height of the GPIO, and is used for turning on and off the system side SOC of the ARM computer and a power supply circuit of the peripheral equipment.

The fast charge protocol identification chip adopts a south core SC2001, and the charging chip adopts a south core SC8886.

The fast charge protocol identification chip and the charging chip are both connected to the EC controller through an I2C bus. The EC controller obtains information of the fast charge protocol identification chip and the charge chip register through I2C addressing.

Working principle:

1. When an adapter is connected to the charging adapter interface Type-C, when the adapter is a PD protocol (a power transmission protocol) of a standard Type-C, protocol identification is carried out through CC1 and CC2 pin of the Type-C interface, corresponding protocol information is transmitted to an EC controller through I2C, and a charging function of 20V input is started. When the adapter is a high-pass QC protocol (a power transmission protocol), protocol identification is carried out through the DP and DM pin of the Type-C port, corresponding protocol information is transmitted to the EC controllers through the I2C, and a 9V or 12V input charging function is started. At this time, the EC collects protocol chip and charging chip information and judges whether there is abnormality.

2. When the adapter is removed, the charging function is closed and the battery discharging function is started by reading the information of the charging module.

3. When the battery is in a charging state, the EC controller reads the electric quantity information of the electric quantity meter of the battery through the I2C, sets the charging current of the charging module, and after the battery is full, the EC can instruct the charging module to stop charging.

And 4. The EC controller monitors the charging module in real time, if overcurrent or overvoltage exceeds a preset protection value, the system stops charging so as to avoid damaging the battery or circuit components, and the charging and discharging information and the electric quantity information are fed back to the system side SOC through the I2C.

The utility model has low cost and power consumption, and can be applied to flat-panel and pen-powered terminal products.

The utility model has high compatibility, supports single-string battery cells, two-string battery cells, three-string battery cells and four-string battery cells, and can be applied to charging circuits of different types of products.

The utility model has high safety coefficient, integrates multiple detection circuits, and finds that the abnormal EC controller such as overvoltage, overcurrent, overtemperature and the like can respond quickly.

The utility model has simple software configuration when the EC is used for control, only related registers and logic are required to be configured in the aspect of charging, and only corresponding GPIO (general purpose input output port) and simple logic are required to be configured for lamp control and system control.

And an independent KBC (keyboard controller) module is integrated in the EC controller, and input signals of a keyboard are collected and transmitted to the system side SOC through a USB interface.

The EC controller collects input signals of the touch pad through the I2C and transmits the input signals to the system side SOC through the USB interface.

The foregoing embodiments and examples are only for clarity of illustration of the composition and method of use of the device of the present utility model, but the scope of the utility model is not limited thereto, e.g., different packaging structures, different housings, etc. fall within the scope of the utility model.

Claims (7)

1. The power management control system based on the EC control chip is characterized in that: including EC controller and charge module, keyboard, touch-sensitive pad, LED lamp display unit and the SOC system end of being connected with the EC controller, charge module including charge adapter interface, quick charge protocol identification chip, charge chip and battery pack, wherein charge adapter interface and quick charge protocol identification chip input be connected, quick charge protocol identification chip's output is connected the input of charge chip, the battery pack input is connected to the output of charge chip, quick charge protocol identification chip, charge chip and battery pack respectively with EC controller connect.

2. The EC control chip-based power management control system of claim 1, wherein: the EC controller adopts a singlechip 8032 as a core processing unit.

3. The EC control chip-based power management control system of claim 2, wherein: and the EC controller is internally integrated with a keyboard controller, a general input/output port, an integrated circuit interconnection bus, a USB interface and a PWM pulse width modulation unit.

4. A power management control system based on an EC control chip according to claim 3, wherein: the EC controller is respectively connected with the quick charge protocol identification chip, the charging chip, the battery component and the touch pad through the integrated circuit interconnection bus, is connected with the SOC system end through the integrated circuit interconnection bus and the USB interface, is connected with the keyboard through the keyboard controller, and is connected with the LED lamp display unit through the general input and output port.

5. The EC control chip-based power management control system of claim 1, wherein: the battery assembly comprises a battery, a battery protection board, an electricity meter and a charging control unit.

6. The EC control chip-based power management control system of claim 5, wherein: the battery is any one of one to four batteries, and the fuel gauge and the charging control unit are connected with the EC controller.

7. The EC control chip-based power management control system of claim 1, wherein: the fast charge protocol identification chip adopts a south core SC2001, and the charging chip adopts a south core SC8886.