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Rechargeable battery, charging management circuit, electronic device and charger

A charging management circuit and battery technology, which is applied in the field of electronic equipment and chargers, rechargeable batteries, and charging management circuits, can solve problems such as inaccurate battery voltage detection, and achieve the effect of improving charging control accuracy and detection accuracy

Active Publication Date: 2016-10-26
HYTERA COMM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a rechargeable battery, charging management circuit, electronic equipment and charger, which can solve the problem of inaccurate battery voltage detection in the prior art

Method used

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  • Rechargeable battery, charging management circuit, electronic device and charger
  • Rechargeable battery, charging management circuit, electronic device and charger
  • Rechargeable battery, charging management circuit, electronic device and charger

Examples

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no. 1 example

[0028] Such as figure 1 As shown, the first embodiment of the rechargeable battery of the present invention comprises:

[0029] The battery cell 11 , the protection circuit 12 , the fuel gauge chip 13 , the housing 10 containing the battery cell 11 , the protection circuit 12 and the fuel gauge chip 13 , and the three contacts 101 , 102 and 103 arranged on the housing 10 . The shape and size of each part in the figure is only for illustration.

[0030] The cell 11 includes a first electrode 111 and a second electrode 112. One of the first electrode 111 and the second electrode 112 is a positive pole, and the other is a negative pole. The first electrode 111 is connected to the first contact 101 through the protection circuit 12, and the second The electrode 112 is connected to the second contact piece 102 through the protection circuit 12 .

[0031] The protection circuit 12 includes a first switch element 121 and a protection chip 122, the control end of the first switch el...

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Abstract

The invention discloses a rechargeable battery, which comprises a cathode mix, a protection circuit, a coulometer chip, a shell accommodating the cathode mix, the protection circuit and the coulometer chip, and at least three contact pieces arranged on the shell, wherein the protection circuit comprises a first switching element; the cathode mix comprises a first electrode and a second electrode, the first electrode is connected with the first contact piece via the protection circuit, the first electrode and the first contact piece are directly or indirectly connected with the first switching element respectively, and the second electrode is connected with the second contact piece via the protection circuit; the first interface of the coulometer chip is connected with the first electrode, the second interface is connected with the second electrode, and the third interface is connected with the third contact piece. The invention also discloses a charging management circuit, an electronic device and a charger. Through the above mode, the cathode mix voltage can be directly acquired, influences from contact impedance between the first switching element in the protection circuit, an external detection circuit and the third contact piece do not exist, the battery voltage detection accuracy is improved, and the charging control precision is improved.

Description

technical field [0001] The invention relates to batteries, in particular to a rechargeable battery, a charging management circuit, electronic equipment and a charger. Background technique [0002] Lithium battery is a rechargeable battery with the advantages of high energy density and no pollution. It is widely used in electronic devices such as notebook computers and mobile phones. Lithium batteries cannot be overcharged or overdischarged during use, otherwise the battery will be damaged or scrapped. Therefore, there is a protection circuit inside the battery, and at least one switching element is installed in the protection circuit. The switching element is connected in series between the electrode of the battery cell and the corresponding between the battery contacts. [0003] The charging process of lithium batteries can be divided into four stages: trickle pre-charging, constant current charging, constant voltage charging and charging termination. In the existing lith...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0029H02J7/00302H02J7/0086
Inventor 魏明陈建潮熊运远赵文虎彭细根
Owner HYTERA COMM CORP
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