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Dynamically reconfigurable battery pack and charging method thereof

A technology of dynamic reconfiguration and battery pack, which is applied in the direction of secondary battery charging/discharging, battery overcharge protection, battery pack components, etc., which can solve problems such as reduced service life, and achieve battery overcharge avoidance, high work efficiency, The effect of reducing the replacement cost

Pending Publication Date: 2021-11-05
成都辛齐智能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a dynamically reconfigurable battery pack and its charging method in order to solve the problem of reduced service life of the single cells in the existing battery pack due to simultaneous charging

Method used

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  • Dynamically reconfigurable battery pack and charging method thereof
  • Dynamically reconfigurable battery pack and charging method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] see figure 1 and 2 , the present embodiment provides a dynamically reconfigurable battery pack, including a battery compartment, the battery compartment is provided with a main control board and a battery pack circuit formed by connecting a plurality of batteries with a voltage of D volts in series, and the main control board The board is equipped with a voltage detection unit to detect the voltage of each battery, a current detection unit to detect the current of each battery, and a calculation unit to calculate the voltage change rate, power change rate and power according to the battery voltage and current. Each battery is coupled and connected according to The voltage change rate and the power change rate adjust the PWM regulation circuit of the duty ratio. The battery pack circuit is composed of 16 normal battery circuit units and 2 backup battery circuit units. The charging voltage of the battery pack is 48 volts.

Embodiment 2

[0023] see figure 1 and 2 , this embodiment is further improved on the basis of embodiment 1, specifically, slide rails are provided for each battery in the battery compartment, and corresponding slide blocks are provided for each battery corresponding to the slide rails.

Embodiment 3

[0025] see figure 1 and 2 , the present embodiment provides a method for charging a dynamically reconfigurable battery pack, comprising the following steps:

[0026] (1) Use a charging power supply with a voltage of 48 volts for charging, and the positive and negative poles of the battery pack and the charging power supply are connected;

[0027] (2) The voltage detection unit detects the voltage of the battery, the current detection unit detects the current of the battery, and the calculation unit calculates the rate of change of voltage, the rate of change of electric quantity and the electric quantity according to the voltage and electric current of the detected battery, if the electric quantity is less than the rated capacity, proceed to step (3) , if the electric quantity is equal to the rated capacity, proceed to step (5);

[0028] (3) The PWM regulation circuit adjusts the duty cycle according to the voltage change rate and power change rate of the battery, and contro...

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Abstract

The invention discloses a dynamically reconfigurable battery pack, and relates to the technical field of batteries. The dynamically reconfigurable battery pack comprises a battery compartment; the battery compartment is internally provided with a main control board and a battery pack circuit formed by connecting a plurality of batteries with the voltage of D volts in series; the main control board is provided with a voltage detection unit for detecting the voltage of each battery, a current detection unit for detecting the current of each battery, and a calculation unit for calculating a voltage change rate, an electric quantity change rate and an electric quantity according to the voltage and the current of the battery; each battery is coupled and connected with a PWM regulating circuit for regulating the duty ratio according to the voltage change rate and the electric quantity change rate; the battery pack circuit consists of M normal battery circuit units and N standby battery circuit units; the charging voltage of the battery pack is D * M; the PWM regulating circuit regulates the duty ratio according to the voltage change rate and the electric quantity change rate of the corresponding battery, and the charging duration of the battery is controlled according to the duty ratio, so that overcharging of the battery is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of batteries, and more specifically relates to a dynamically reconfigurable battery pack and a charging method thereof. Background technique [0002] At present, in the freight handling industry, electric vehicles have gradually begun to replace internal combustion engine trucks and have been widely used. [0003] Electric vehicles use battery packs as power. The existing battery packs are made of multiple batteries connected in series. When charging, the batteries are charged at the same time, and when discharging, they are discharged at the same time. However, there are differences between the single batteries when they leave the factory. Overcharge and discharge may easily cause some batteries to be over-discharged, which will reduce the service life of the battery. In addition, the existing battery pack is generally packaged by multiple single-cell batteries. When replacing the battery, it is necessary t...

Claims

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Application Information

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IPC IPC(8): H01M10/48H01M10/44H01M50/244H01M50/249H01M50/213H02J7/00B60L58/10B60L50/64
CPCH01M10/48H01M10/441H01M50/244H01M50/249H01M50/213H02J7/00712H02J7/007182H02J7/00302B60L50/64B60L58/10Y02T10/70Y02E60/10
Inventor 李任欣刘豪邓云庆邓青松
Owner 成都辛齐智能技术有限公司
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