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Driving charging system of lithium battery pack standby power supply and control method

A lithium battery pack, driving charging technology, applied in battery/fuel cell control devices, efficient vehicle charging, electric vehicle charging technology, etc. The effect of prolonging the service life

Active Publication Date: 2021-11-02
秦皇岛奥卡深软件开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a driving charging system and control method for a backup power supply of a lithium battery pack to solve the problem that the lithium battery in the prior art is prone to overcharging during the charging process, and the power mutation experienced in the charging cycle has a negative impact on the battery and power generation. In order to suppress the sudden power change experienced by the driving generator during the charging cycle and avoid overcharging of the lithium battery, thereby improving the life, safety and reliability of the lithium battery and driving generator

Method used

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  • Driving charging system of lithium battery pack standby power supply and control method
  • Driving charging system of lithium battery pack standby power supply and control method
  • Driving charging system of lithium battery pack standby power supply and control method

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Effect test

Embodiment 1

[0050] A driving charging system for lithium battery pack backup power, combined with figure 1 As shown, it includes a core control module, a lithium battery management system BMS, a lithium battery pack and a driving generator part with a communication function. The communication mode between the driving generator part and the core control module is LIN communication; the communication mode between the lithium battery management system BMS and the core control part is serial communication.

[0051] The core control module monitors the status information of the driving generator in real time through the LIN port, and monitors the information of the lithium battery management system through the serial port, and controls the working status of the driving generator according to the status information of the lithium battery management system. The status information of the battery management system includes single cell voltage, total voltage, charge and discharge current, temperatu...

Embodiment 2

[0084] On the basis of Embodiment 1, this embodiment has made some changes in the structure, communication mode, and voltage regulation control strategy of the on-board generator, and retained the original basic circuit modules. Image 6 Shown is a structural block diagram of the control method of the driving charging system of the lithium battery pack backup power supply according to the second embodiment.

[0085] The driving charging system in this embodiment includes a lithium battery system part with communication function and a driving generator part with communication control function, and the charging adjustment controller in the lithium battery system part with communication function is independently set.

[0086] The charging regulation controller is connected with the lithium battery management system BMS through RS485 communication, and the charging regulation controller communicates with the voltage regulator of the on-board generator with PWM communication control...

Embodiment 3

[0096] This embodiment provides a driving charging control method for a lithium battery pack backup power supply. This embodiment controls the output voltage of the driving generator according to the rotational speed information of the driving generator, and specifically includes the following steps:

[0097] When the speed of the on-board generator is lower than 2000 rpm, the on-board generator does not generate electricity; when the speed of the on-board generator is 2000-3000 rpm, the maximum output power of the on-board generator is 60%; when the speed of the on-board generator is above 3,000 rpm, the on-board generator Maximum output power 100%.

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Abstract

The invention provides a driving charging system of a lithium battery pack standby power supply and a control method. The charging system comprises a lithium battery system part with a communication function and a driving generator part with a communication control function; the driving generator part with the communication control function comprises a driving generator and a voltage regulator; the lithium battery system part with the communication function comprises a lithium battery pack and a lithium battery management system BMS; and a charging regulation controller which is used for sending out control information according to the obtained charging state parameters and a preset control strategy, and regulating and controlling the output voltage of the driving generator according to the lithium battery voltage and the charging loop current, so that the driving generator part with the communication control function charges the lithium battery with specified voltage and current. According to the invention, the control of the output voltage of the driving generator is realized, the overcharge phenomenon of a single lithium battery is avoided, the service life of the lithium battery is prolonged, and the use safety of the lithium battery is improved.

Description

technical field [0001] The invention relates to the technical field of battery pack charging, in particular to a driving charging system and a control method for a lithium battery pack backup power supply. Background technique [0002] The battery is an indispensable part of the car, and the battery can be a lead-acid battery or a lithium battery. At present, the performance and technical requirements of automotive batteries are constantly improving, resulting in problems such as large volume, heavy weight, insufficient capacity, and frequent maintenance. Therefore, lithium batteries are usually mainly used in automotive energy storage applications. [0003] Compared with the traditional lead-acid battery for internal combustion engine vehicles, the lithium battery has a high working voltage, which can reach 3.7-3.8V; high specific energy, the actual specific energy can reach 555WH / kg, and the material specific energy can reach more than 150mAh / g , the same vehicle space ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/12B60L53/00H02J7/32
CPCB60L58/12B60L53/00H02J7/32Y02T10/70Y02T10/7072Y02T90/14Y02T10/92Y02T90/16
Inventor 王常亮
Owner 秦皇岛奥卡深软件开发有限公司
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