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Standby battery management system of vehicle-mounted terminal

A backup battery and management system technology, applied in the power network operating system integration, load supply circuit, battery circuit device, etc., can solve the problems of unfavorable compatible design, high cost, current backflow, etc., to reduce the cost of product switching and rectification, ensure The effect of stable work and solving compatibility problems

Pending Publication Date: 2020-06-09
XIAMEN YAXON NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of the former is better for the time being, but it is not suitable for Ni-MH batteries. There is a risk of current backflow when using Ni-MH batteries; Different chips should be selected for different batteries, which is not conducive to product compatible design

Method used

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  • Standby battery management system of vehicle-mounted terminal
  • Standby battery management system of vehicle-mounted terminal
  • Standby battery management system of vehicle-mounted terminal

Examples

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Embodiment Construction

[0029] The present invention will be further described below through specific embodiments.

[0030] refer to Figure 1 to Figure 10 , a backup battery management system for a vehicle terminal, connected between the vehicle battery and a working unit, including a step-down module and a battery management module. The step-down module is used to convert the vehicle battery voltage into the system power supply voltage. The step-down module includes a step-down chip U1 and related peripheral circuits, see figure 2 , its VIN pin is connected with the vehicle battery, and connected with capacitors C2 and C3. One end of the inductor L1 is connected to the SW pin, and the other end of the inductor L1 is used as the output terminal Vout. A capacitor C1 is connected between the SW pin and the BOOT pin. A resistor R3 is connected between the EN pin and the VIN pin. The GND pin and the PAD pin are connected to GND, and capacitors C4, C5, C6, etc. are connected in parallel between the...

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PUM

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Abstract

A standby battery management system of a vehicle-mounted terminal is connected between a vehicle-mounted storage battery and a working unit and comprises a voltage reduction module and a battery management module. The battery management module comprises a nickel-metal hydride battery charging circuit, a lithium battery charging circuit, an MCU unit, a discharging circuit and a standby battery. Thenickel-metal hydride battery charging circuit is connected with the standby battery and the voltage reduction module and is used for charging the nickel-metal hydride battery; the lithium battery charging circuit is connected with the standby battery and the voltage reduction module and is used for charging the lithium battery; the discharging circuit is connected with the standby battery for controlling the standby battery to generate power; the MCU unit is connected with the nickel-metal hydride battery charging circuit, the lithium battery charging circuit, the discharging circuit, and thestandby battery for realizing charging management and discharging management according to a vehicle-mounted state and a standby battery state. Discrete charging management is adopted, the problem ofcompatibility between the two is well solved, and the inventory cost and the product switching and rectifying cost can be reduced.

Description

technical field [0001] The invention relates to the field of vehicle equipment, in particular to a vehicle terminal backup battery management system. Background technique [0002] In the traditional backup battery power supply system, it is generally used to place the backup battery at the back end of the step-down chip of the power module to directly supply power to the working unit, or to use a special battery charge and discharge management chip for backup battery management. The price of the former is better for the time being, but it is not suitable for Ni-MH batteries. There is a risk of current backflow when using Ni-MH batteries; Different chips should be selected for different batteries, which is not conducive to product compatible design. Contents of the invention [0003] The main purpose of the present invention is to overcome the above-mentioned defects in the prior art, and propose a vehicle-mounted terminal backup battery management system using discrete po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/00
CPCH02J9/061H02J7/0029H02J7/0063Y04S20/20Y02B70/30
Inventor 肖振隆谢宁鸿唐祥雨朱仙锋林荣剑
Owner XIAMEN YAXON NETWORKS CO LTD
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