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CN-121984190-A - Low-power consumption power management system based on 5G communication module and control method thereof

CN121984190ACN 121984190 ACN121984190 ACN 121984190ACN-121984190-A

Abstract

The invention relates to the technical field of power management, in particular to a low-power consumption power management system based on a 5G communication module and a control method thereof, wherein the system comprises a battery unit, and equivalent parameters of the battery unit comprise battery open-circuit voltage, direct-current internal resistance and battery temperature, and the battery unit is used for supplying power to the system and outputting battery terminal voltage; the power supply management chip PMIC is used for performing pre-boosting and staged power-on control on the 5G communication module under the control of the control processing unit, the power supply sensing unit comprises a voltage sampling circuit, a current detection circuit and a temperature detection circuit and is used for collecting the voltage of the battery terminal, the working current of the system and the temperature of the battery at sampling frequency, and the energy buffer unit is provided with equivalent capacitors which are arranged on the output side of the PMIC in parallel and are used for providing peak buffer current in the wake-up transient state of the 5G communication module. According to the invention, the 5G communication module can still be ensured to successfully finish network registration and data transmission under the low-temperature environment and the battery aging condition, and the power supply reliability, the communication continuity and the overall energy efficiency level of the system are obviously improved.

Inventors

  • ZHANG JINGUO
  • ZHANG ZHEWEI
  • LUO JIANGWEI
  • NIU TAO

Assignees

  • 江苏富联通讯技术股份有限公司

Dates

Publication Date
20260505
Application Date
20251229

Claims (10)

  1. 1. The low-power consumption power management system based on the 5G communication module is characterized by comprising a battery unit, wherein equivalent parameters of the battery unit comprise battery open-circuit voltage Internal resistance of DC And battery temperature T for supplying power to the system and outputting battery terminal voltage ; The power management chip PMIC is used for performing pre-boosting and phased power-on control on the 5G communication module under the control of the control processing unit; the power supply sensing unit comprises a voltage sampling circuit, a current detection circuit and a temperature detection circuit for sampling frequency Collecting the battery terminal voltage System operating current and battery temperature T; the equivalent capacitance of the energy buffer unit is The power supply circuit is arranged on the PMIC output side in parallel and is used for providing peak buffer current in the wake-up transient state of the 5G communication module; a storage unit for storing battery state parameters , T) and allowable transmit power upper limit Mapping relation between the two; a control processing unit for estimating based on the data collected by the power sensing unit And (3) with Reading the corresponding memory cell And generating pre-wake-up power And a staged power control command to ensure battery terminal voltage during wake-up Always higher than system under-voltage locking threshold 。
  2. 2. The low power consumption power management system based on 5G communication module according to claim 1, wherein the equivalent capacitance of the energy buffer unit The following relationship is satisfied: Wherein, the In order to wake up the transient compensation current, In order to compensate for the duration of time, To an allowable voltage drop magnitude.
  3. 3. The control method of the low-power consumption power management system based on the 5G communication module according to any one of claims 1 to 2, wherein: The method comprises the following steps: Before the 5G communication module wakes up, the battery terminal voltage is acquired through the power supply sensing unit Transient current and battery temperature T, and estimating battery open circuit voltage With internal resistance of direct current ; According to the described 、 And T, reading the corresponding upper limit of allowable transmitting power from the memory cell And meet the following Not less than system reset threshold Is a constraint on (2); controlling PMIC to enter pre-boost state, and limiting the transmitting power of 5G communication module to pre-wake-up power Wherein < ; In the pre-monitoring time window In, at the sampling frequency Continuous monitoring of battery terminal voltage ; When (when) Reaching a classification voltage threshold 、 Final stability threshold At this time, the power sequence is phased according to the preset Raising the transmitting power of the 5G communication module step by step; If at any stage monitoring Below is lower than Immediately fall back to the previous power stage and extend the pre-boost time.
  4. 4. The method for controlling a low power consumption power management system based on a 5G communication module according to claim 3, wherein the short pulse method is characterized in that the battery DC internal resistance The method is calculated according to the following formula: ; Wherein, the For the voltage variation of the battery terminal before and after pulse loading, Is a loaded pulse current.
  5. 5. The method for controlling a low power consumption power management system based on a 5G communication module according to claim 3, wherein the allowable transmit power upper limit is set as the upper limit Obtained by an off-line multi-temperature and multi-aging battery discharging experiment and stored in the storage unit in a table look-up mode.
  6. 6. The method of claim 3, wherein the PMIC pre-boosting operation is performed before powering up the RF circuit of the 5G communication module, to suppress a voltage drop in a wake-up transient.
  7. 7. The method for controlling a low power consumption power management system based on a 5G communication module according to claim 3, wherein the sampling frequency is as follows Not less than 5kHz for obtaining a battery terminal voltage minimum during a wake-up transient 。
  8. 8. The method for controlling a low power consumption power management system based on a 5G communication module according to claim 3, wherein the staged power control adopts a fixed N-gear power level: and corresponding waiting time is set between adjacent power levels 。
  9. 9. The method for controlling a low power consumption power management system based on a 5G communication module as set forth in claim 3, wherein when the estimated DC internal resistance of the battery is obtained Greater than the internal resistance threshold When the system enters a conservative power mode, and pre-wakes up the power Fixedly limited to a low power gear.
  10. 10. The method of claim 3, wherein the control processing unit records an operation log after each wake-up, the log at least comprises 、 、T、 Minimum value of battery terminal voltage For subsequent power consumption and reliability analysis.

Description

Low-power consumption power management system based on 5G communication module and control method thereof Technical Field The invention relates to a low-power consumption power management system based on a 5G communication module and a control method thereof, belonging to the technical field of power management. Background With the rapid development of the internet of things terminal, the intelligent meter, the industrial monitoring equipment and the vehicle-mounted communication terminal, the 5G communication module is widely applied to low-power consumption terminal equipment needing remote data interaction because of the high speed, low time delay and large connection capability. In order to prolong the endurance time of the terminal equipment, a dynamic voltage frequency adjustment (DVFS) and a sleep control strategy are commonly adopted in the prior art, so that a 5G communication module and a radio frequency and power related unit thereof enter a low-power consumption or sleep state when service is idle, and then wake up quickly when data uploading or network registration is required. However, in practical application, especially in a low-temperature environment or a battery aging scene, the dc internal resistance of the battery may be significantly increased. When the 5G communication module is switched from the sleep state to the working state, the radio frequency circuit and the power amplifier thereof generate a larger transient current demand in a very short time, and the transient collapse of the battery terminal voltage is easily caused under the action of the battery direct current internal resistance, so that the system triggers the under-voltage lock (UVLO), and the problem that the communication module is reset and restarted before network registration or data transmission is not completed is caused, therefore, improvement of the low-power consumption power management system based on the 5G communication module and the control method thereof are needed to solve the problems. Disclosure of Invention The invention aims to provide a low-power consumption power management system based on a 5G communication module and a control method thereof, so as to solve the problem that the direct-current internal resistance of a battery can be obviously increased in the actual application process, especially in a low-temperature environment or a battery aging scene. When the 5G communication module is switched from a dormant state to a working state, a radio frequency circuit and a power amplifier of the 5G communication module can generate larger transient current demand in a very short time, and transient collapse of battery terminal voltage is easily caused under the action of battery direct current internal resistance, so that the problem that the communication module is reset and restarted before network registration or data transmission is not completed is caused due to system triggering under-voltage locking (UVLO). In order to achieve the above purpose, the present invention provides the following technical solutions: a low-power consumption power management system based on a 5G communication module and a control method thereof comprise a battery unit, wherein equivalent parameters comprise battery open-circuit voltage Internal resistance of DCAnd battery temperature T for supplying power to the system and outputting battery terminal voltage; The power management chip PMIC is used for performing pre-boosting and phased power-on control on the 5G communication module under the control of the control processing unit; the power supply sensing unit comprises a voltage sampling circuit, a current detection circuit and a temperature detection circuit for sampling frequency Collecting the battery terminal voltageSystem operating current and battery temperature T; the equivalent capacitance of the energy buffer unit is The power supply circuit is arranged on the PMIC output side in parallel and is used for providing peak buffer current in the wake-up transient state of the 5G communication module; a storage unit for storing battery state parameters ,T) and allowable transmit power upper limitMapping relation between the two; a control processing unit for estimating based on the data collected by the power sensing unit And (3) withReading the corresponding memory cellAnd generating pre-wake-up powerAnd a staged power control command to ensure battery terminal voltage during wake-upAlways higher than system under-voltage locking threshold。 Further, the equivalent capacitance of the energy buffer unitThe following relationship is satisfied: Wherein, the In order to wake up the transient compensation current,In order to compensate for the duration of time,To an allowable voltage drop magnitude. Further, the method comprises the following steps: Before the 5G communication module wakes up, the battery terminal voltage is acquired through the power supply sensing unit Transient current and battery temperature T