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CN-122026575-A - Multifunctional automobile emergency starting power supply and power distribution module thereof

CN122026575ACN 122026575 ACN122026575 ACN 122026575ACN-122026575-A

Abstract

The invention discloses a multifunctional automobile emergency starting power supply and a power distribution module thereof, and relates to the technical field of automobile emergency power supplies. The emergency starting power supply comprises a shell, a battery pack, an electric control unit, a starting unit and an inflation unit. The power distribution module integrates a main controller, a battery management chip, a multi-path load switch and a temperature sensor, and realizes layered intelligent power management, namely, based on the state and the temperature of a real-time battery, the power distribution module dynamically calculates the discharging capacity and arbitrates a load request according to a preset priority, ensures the power supply of a core function, prevents the over-discharging of the battery and provides accurate residual use time prediction through a high-precision SOC estimation and grading electric quantity management strategy, and realizes active overheat prevention and power regulation instead of passive shutdown through multi-region temperature monitoring. The invention solves the problems of loose structure, poor heat dissipation, multiple load management conflict, state monitoring deficiency and the like in the prior art, and realizes the structure reliability, intelligent power distribution and safe operation under high integration level.

Inventors

  • JIANG ZHONGBAO

Assignees

  • 东莞市鸿瑞升医疗科技有限公司

Dates

Publication Date
20260512
Application Date
20251230

Claims (10)

  1. 1. A multifunctional automobile emergency starting power supply is characterized by comprising, A housing (10); A battery pack (205) provided in the housing (10); An electronic control unit (20) arranged on or in the shell (10), wherein the electronic control unit (20) comprises a display screen (201) for displaying information, a button (202) for operation, a charging port (203) for charging a battery pack (205) and an inflation port (204) for connecting an inflation pipeline; The starting unit (30) comprises an illuminating lamp (301) and a power supply interface (302) used for being connected with an automobile storage battery to provide starting current, and the starting unit (30) is electrically connected with the battery pack (205); The inflation unit (40) comprises a driving motor (401) powered by the battery pack (205), a driving wheel (404) driven by the driving motor (401), and a piston assembly driven by the driving wheel (404) to reciprocate, wherein the output of the inflation unit (40) is connected to the inflation port (204) through a pipeline.
  2. 2. The utility model provides a multi-functional car emergency starting power supply distribution module, includes the multi-functional car emergency starting power supply of claim 1, its characterized in that, this distribution module integrate in inside the automatically controlled unit (20), the distribution module includes: A main controller (11) for receiving user input and executing a power distribution strategy; A battery management chip (14) for monitoring in real time the voltage, current, temperature, state of charge, SOC, and state of health, SOH, of the battery pack (205); a multi-path load switch (12) connected with the battery pack (205), the starting unit (30), the inflating unit (40) and the illuminating lamp (301), and controlled by the main controller (11) for switching on or off the circuit leading to each load; A temperature sensor (15) for monitoring the temperature of the battery pack (205) and critical power regions.
  3. 3. The utility vehicle emergency start power distribution module of claim 2, further comprising a DC-DC converter (13) for converting the voltage of the battery pack (205) to different voltage levels required by each load.
  4. 4. The multi-function automotive emergency start power distribution module of claim 2, wherein the main controller (11) is configured to perform dynamic power distribution comprising the steps of: obtaining a current maximum allowable discharge current I bat_max (t) of the battery determined by the battery management chip (14); Acquiring a request state Req i of each load and calculating the maximum allowable current I max_i of each load according to the temperature state; Calculating and distributing the actual current I alloc_i of each load based on the I bat_max (t), the current total load current and the I max_i according to the preset load priority; the priority of the load at least comprises a starting unit, an inflating unit, an illuminating lamp and a USB interface from high to low.
  5. 5. The power distribution module for the emergency starting power supply of the multifunctional automobile according to claim 4, wherein when the starting unit (30) requests activation, the main controller (11) controls the multi-path load switch (12) to close or limit the current of the inflating unit (40), the illuminating lamp (301) and the USB interface.
  6. 6. The multi-function automotive emergency start power distribution module of claim 2, wherein the battery management chip (14) is configured to calculate the state of charge of the battery pack (205) using coulomb integration in combination with open circuit voltage calibration.
  7. 7. The power distribution module for a multi-function vehicle emergency start-up according to claim 6, wherein the main controller (11) is configured to perform differentiated function licensing and power derating policies according to different preset power intervals within which the state of charge falls.
  8. 8. The utility model of claim 7, wherein the preset power interval comprises: in a first interval, all functions operate at rated power; in a second interval, the power of the inflating unit (40) and/or the illuminating lamp (301) is reduced, and the USB interface is output and limited; In a third interval, the starting unit (30) and the inflating unit (40) are disabled, and the lighting lamp (301) is subjected to power derating.
  9. 9. The utility vehicle emergency start power distribution module of claim 2, wherein the master controller (11) is configured to calculate and provide a residual usage time prediction based on the current status of the battery pack (205) and the total power of the active load, The calculation of the residual use time prediction comprises the steps of carrying out weighted synthesis on working currents of a plurality of loads through a Peukert formula to obtain an equivalent discharge current I effective , correcting the actual available capacity of the battery under the current load condition according to the equivalent discharge current I effective , and calculating the residual time by combining the total load power.
  10. 10. The multi-function automotive emergency start power distribution module of claim 2, wherein the main controller (11) is configured to perform intelligent temperature protection, comprising: Acquiring at least a battery temperature T bat and a power device temperature T mos monitored by the temperature sensor (15) in real time; when any one of the temperatures approaches or reaches a corresponding preset safety threshold, actively triggering power derating or current limiting measures on related loads; after the temperature falls back to the safe interval, the power of the related load is automatically recovered, The temperature sensor (15) also monitors the inflation unit motor area temperature T pump , and when the inflation unit motor area temperature T pump reaches its preset safety threshold, the inflation unit (40) is power limited or shut down.

Description

Multifunctional automobile emergency starting power supply and power distribution module thereof Technical Field The invention relates to the technology of automobile emergency power supplies, in particular to a multifunctional automobile emergency starting power supply and a power distribution module thereof. Background The automobile emergency starting power supply is used as portable automobile emergency equipment, can provide instantaneous heavy current for a starting motor when the battery of the automobile is deficient and cannot be started, helps a driver to break away from dilemma, and is a common vehicle-mounted standby tool. With the increasing demands of users for the functional integration level of portable devices, emergency starting power products integrating additional functions are gradually appeared in the market. However, the existing multifunctional emergency starting power supply still has a series of technical defects and bottlenecks in design and practical use, and the performance and safety of the multifunctional emergency starting power supply are limited, and the multifunctional emergency starting power supply is mainly characterized in the following aspects: Most products simply stack functional modules for startup, inflation, illumination, etc., resulting in bulky devices and loose structures. In particular to an inflating unit, a simple single-cylinder piston pump or a diaphragm pump is adopted, and the problems of low inflating efficiency, large output airflow pulsation, obvious working noise and vibration and the like exist. When the motor runs for a long time, heat generated by the motor and the compression unit is accumulated in the narrow shell, the heat dissipation design is insufficient, the components are easy to overheat and damage, and the reliability of the whole machine is affected. Current products generally lack sophisticated power management strategies. When multiple loads (e.g., high current start, inflator pump, high power lighting, multi-port USB charging) request operation simultaneously or sequentially, simple hardware current limiting or fuse protection is relied on. This is extremely prone to the following problems: when the battery is insufficient in electric quantity or high in temperature, if a plurality of high-power-consumption functions are forced to be started or operated simultaneously, the safety discharging capacity of the battery can be exceeded, so that the battery voltage is suddenly reduced, the internal structure is damaged, even the thermal runaway risk is caused, and the cycle life of the battery is seriously shortened. There is no priority coordination mechanism among the functional modules. For example, if the charging or charging function is still consuming a large amount of current during a critical vehicle start, a start failure may be caused by insufficient power. The user is also unaware of how long the remaining functions are still in use in the current battery state. Most devices are only provided with simple LED electric quantity indicating lamps, and cannot accurately monitor the state of charge (SOC), the state of health (SOH), the temperature and the temperature rise of key power devices of a battery in real time. The protection measures are passive and lagged, and the circuit is usually cut off only after the fault occurs, so that the pre-warning and the active power adjustment cannot be realized. In summary, the multifunctional automobile emergency starting power supply in the prior art has obvious defects in the aspects of structural reliability under high integration level, intelligent power distribution under multiple load working conditions, accurate prediction based on states, user experience and the like. Accordingly, there is a need for further improvements in the art. Disclosure of Invention In summary, the invention provides a multifunctional automobile emergency starting power supply and a power distribution module thereof. The technical scheme of the invention is realized as follows: a multifunctional automobile emergency starting power supply is characterized by comprising, A housing; A battery pack disposed within the housing; The electronic control unit is arranged on or in the shell and comprises a display screen for displaying information, a button for operation, a charging port for charging the battery pack and an inflation port for connecting an inflation pipeline; the starting unit comprises an illuminating lamp and a power supply interface used for being connected with an automobile storage battery to provide starting current, and is electrically connected with the battery pack; The inflation unit comprises a driving motor powered by the battery pack, a driving wheel driven by the driving motor and a piston assembly driven by the driving wheel to reciprocate, and the output of the inflation unit is connected to the inflation inlet through a pipeline. The utility model provides a multi-functional car emergen