A control method and terminal for parallel charging

A charging control and terminal technology, applied in the direction of secondary battery charging/discharging, charging/discharging current/voltage regulation, current collector, etc., can solve the problems of long charging time, terminal charging heat, slow charging speed, etc., to achieve charging speed Fast, reduce the terminal temperature, avoid the effect of charging heat

Active Publication Date: 2019-07-30
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that using the existing charging control technology, not only the charging time is long and the charging speed is slow, but also it is easy to cause the problem of terminal charging heating. However, there is currently no effective solution for this problem.

Method used

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  • A control method and terminal for parallel charging
  • A control method and terminal for parallel charging
  • A control method and terminal for parallel charging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The control method of parallel charging in the embodiment of the present invention, such as image 3 shown, including the following steps:

[0085] Step 301, the main control chip generates a control signal supporting alternate charging of the two charging chips according to the parallel charging control strategy.

[0086] Step 302 , the main control chip outputs a control signal to control the charging of the two charging chips alternately in a pulse manner.

[0087] Adopting the embodiment of the present invention, it is not a complete constant current charging, after four stages of trickle charging state-constant current charging state-constant voltage charging state-charging completion state, and the control is in the constant current charging state within a predetermined time, there will be Relatively large current, in this way, the constant current charging time is prolonged, so that the constant current time will not soon reach the constant voltage charging stat...

Embodiment 2

[0089] The control method of parallel charging in the embodiment of the present invention, such as Figure 4 shown, including the following steps:

[0090] Step 401, the main control chip generates a control signal supporting alternate charging of the two charging chips according to the parallel charging control strategy.

[0091] Step 402, the main control chip reads the terminal battery voltage Vb, judges whether Vb>V1, and obtains a judgment result; wherein, V1 is the critical point voltage from the trickle charging state to the constant current charging state.

[0092] Step 403 , when the judgment result is Vb>V1, the constant current charging condition is satisfied, then output the control signal, start the pulse charging in the constant current stage, and control the charging of the two charging chips alternately.

[0093] Adopting the embodiment of the present invention, it is not a complete constant current charging, after four stages of trickle charging state-constan...

Embodiment 3

[0095] The control method of parallel charging in the embodiment of the present invention, such as Figure 5 shown, including the following steps:

[0096] Step 501, the main control chip generates a control signal supporting alternate charging of the two charging chips according to the parallel charging control strategy.

[0097]Step 502, the main control chip reads the terminal battery voltage Vb, judges whether Vb>V1, and obtains a judgment result; wherein, V1 is the critical point voltage from the trickle charging state to the constant current charging state.

[0098] Step 503 , when the judgment result is Vb>V1, the constant current charging condition is met, then output the control signal, start the pulse charging in the constant current stage, and control the charging of the two charging chips alternately.

[0099] Step 504: output the first control signal to enable the first charging chip, set the charging current for the first charging chip to I1, and the charging ti...

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Abstract

The invention discloses a control method for parallel charging, and a terminal. The method comprises the steps that: a main control chip generates a control signal to support alternating charging for two charging chips according to a parallel charging control policy; and the main control chip outputs the control signal to perform charging control on the two charging chips alternately in a pulse way.

Description

technical field [0001] The invention relates to charging control technology, in particular to a parallel charging control method and terminal. Background technique [0002] As the terminal battery capacity increases, the charging current also increases accordingly. Taking the high-current charging scenario as an example, when the charging current is relatively large, charging the terminal will cause the battery to heat up accordingly. Using two charging management chips can disperse the heat. In addition, when using a large-capacity battery for fast charging, such as 1C or 1.5C charging, the current will be very large, such as 4A or 6A or even higher. [0003] If the existing constant current charging control scheme is completely adopted, due to the voltage damage on the battery line and internal resistance, the constant current time will reach the constant voltage charging state in a short time, and the current generated by constant current charging is larger than that of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/44H02J7/00H02J7/007Y02E60/10
Inventor 王帅
Owner NUBIA TECHNOLOGY CO LTD
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