Balanced charging circuit and device for series batteries

A technology for balanced charging and series batteries, applied in battery circuit devices, charge equalization circuits, circuit devices, etc., can solve the problem that the same charging circuit cannot meet the switching requirements of series batteries, cannot ensure that series batteries share the same charging circuit, and the structure of the charging circuit is complex and other issues, to achieve the effect of meeting the needs of charging switching, improving safety and reliability, and low cost

Active Publication Date: 2019-01-25
JOYETECH EURO HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the battery packs composed of multiple series batteries are charged by series charging circuits, and the existing series charging circuits are usually designed for a single two or three series batteries
It has at least the following problems: First, the same charging circuit cannot meet the switching requirements of two, three, or even more series-connected batteries, that is, it cannot guarantee that two, three, or even more series-connected batteries can share the same charging circuit. charging circuit
In addition, for general consumer electronic products, the existing charging circuit structure is relatively complicated and the cost is relatively high

Method used

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  • Balanced charging circuit and device for series batteries
  • Balanced charging circuit and device for series batteries
  • Balanced charging circuit and device for series batteries

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0030] figure 1 It is a structural block diagram of the equalizing charging circuit for series batteries provided by the first embodiment of the present invention. The equalizing charging circuit for batteries in series is used for reliably and safely charging the battery pack 100 composed of at least two batteries in series, and has a simple structure and low cost. Please refer to figure 1 , The charging circuit of this embodiment includes: a control unit 10 , a switch unit 11 , a detection unit 12 , and a voltage detection unit 13 .

[0031] Specifically, the battery pack 100 includes a plurality of single cells T1-Tm (the first battery, the second battery to the m-th battery in sequence) whose positive and negative electrodes are connected in series.

[0032] The detection unit 12 is electrically connected with the control unit 10 and the switch unit 11, wherein the detection unit 12 includes a power element and a detector, and the detector of the detection unit 12 is use...

no. 2 example

[0041] figure 2 It is a structural block diagram of a balanced charging circuit for series batteries provided by the second embodiment of the present invention. Please refer to figure 2 ,in, figure 2 is in figure 1 improved on the basis of figure 2 and figure 1 The difference is that figure 2 The equalizing charging circuit for series connected batteries can also include a charging protection unit 15.

[0042] Specifically, the charging protection unit 15 is electrically connected to the control unit 10 and the battery pack 100, and the charging protection unit 15 is used to detect the voltage of each battery in the battery pack, and the detected voltage of each battery is greater than a preset voltage value When (the battery is fully charged), a notification signal is sent to the control unit 10. Preferably, the control unit 10 is further configured to provide a disconnection control signal to the switch unit 11 according to the notification signal sent by the cha...

no. 3 example

[0046] image 3 It is a structural block diagram of a balanced charging circuit for series-connected batteries provided by the third embodiment of the present invention. Please refer to image 3 ,in, image 3 is in figure 2 improved on the basis of image 3 and figure 2 The difference is that image 3 The equalizing charging circuit for the series batteries can also include an alarm device 40 and / or a display device 41 .

[0047] Specifically, the alarm device 40 is electrically connected with the control unit 10 .

[0048] Preferably, the control unit 10 is also used to send an alarm signal to the alarm device 40 when the charging current is greater than a preset current value or when the detected voltage of each battery is greater than a preset voltage value, and the alarm device 40 is used to signal to alarm. Wherein, the alarm device 40 may be a buzzer or an audible and visual alarm, which is used to emit light or sound for alarming.

[0049] The display device ...

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PUM

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Abstract

The embodiment of the present invention discloses a balanced charging circuit and its device for batteries connected in series. The circuit includes: a control unit, a switch unit, a detection unit, a voltage detection unit, and a switching unit. The detector of the detection unit is used to detect The voltage across the power element; the voltage detection unit is used to detect the voltage of each battery in the battery pack; the control unit is used to calculate the charging path between the power supply device and the battery pack based on the voltage across the power element detected by the detector The charging current, when the charging current is greater than the preset current value or when the voltage of each battery detected by the voltage detection unit is greater than the preset voltage value, a disconnection control signal is sent; the switch unit is used to disconnect the battery according to the disconnection control signal. The charging path between the power supply device and the battery pack; the switching unit is used to switch the number of batteries to be charged in the battery pack. The balanced charging circuit and device of the series battery of the present invention have simple structure, low cost, high reliability and safety.

Description

technical field [0001] The invention relates to the technical field of charging, in particular to an equalizing charging circuit for series batteries and a device thereof. Background technique [0002] At present, the application of energy storage batteries is more and more widespread, which creates the problem of charging these multiple energy storage batteries connected in series. A battery pack composed of multiple batteries in series is mostly charged by a series charging circuit, and the existing series charging circuit is usually designed for a single two or three series batteries. It has at least the following problems: First, the same charging circuit cannot meet the switching requirements of two, three, or even more series-connected batteries, that is, it cannot guarantee that two, three, or even more series-connected batteries can share the same charging circuit. charging circuit. In addition, for general consumer electronic products, the structure of the existin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0021H02J7/0019H02J7/0048H02J7/00302H02J7/00306H01M10/482H01M10/441H01M10/425H01M2010/4271H02J7/00304H02J7/0014Y02E60/10G01R31/3646G01R19/16542
Inventor 不公告发明人
Owner JOYETECH EURO HLDG
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