Battery protective chip cascade balance control device and battery protective chip

A technology for chip protection and balance control, applied in battery circuit devices, circuit devices, charge equalization circuits, etc., can solve the problems of complex external PCB layout and wiring, high hardware requirements, increased costs, etc., to achieve reduced packaging costs and simple circuit structure , easy to achieve effect

Active Publication Date: 2015-05-13
BYD SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The balance processing of the cascade balance control device uses four terminals (ports), which increases the cost of packaging on the one hand
At the same time, there are too many balanced terminals (ports), the terminal state is easily affected by external interference, and the external PCB layout and wiring are relatively complicated during cascading, which requires high hardware requirements.

Method used

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  • Battery protective chip cascade balance control device and battery protective chip
  • Battery protective chip cascade balance control device and battery protective chip
  • Battery protective chip cascade balance control device and battery protective chip

Examples

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Embodiment Construction

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0021] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elem...

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Abstract

A battery protection chip may comprise: a first end, configured to output a strong pull up signal when a voltage of at least one battery in a battery pack protected does not reach a balance threshold, and to output a weak pull down signal when voltages of all batteries in the battery pack protected reach the balance threshold; and a second end, configured to output a strong pull down signal when a voltage of at least one battery in a battery pack protected does not reach a balance threshold, and to output a weak pull up signal when voltages of all batteries in the battery pack protected reach the balance threshold.

Description

technical field [0001] The invention relates to the technical field of battery management. A cascaded balance control device for a battery protection chip and the battery protection chip are specially designed. Background technique [0002] In multi-cell battery protection integrated circuits and multi-cell battery-related integrated circuits, it is usually found that the battery voltages are usually different. In order to prolong the service life of the battery and allow the battery to work in a certain state when cascading, it is very important how to transfer the balance signal between ICs when cascading. [0003] The disadvantages of traditional cascaded balance control devices are: [0004] The balance processing of the cascaded balance control device uses four terminals (ports), which increases the cost of packaging on the one hand. At the same time, there are too many balanced terminals (ports), and the terminal state is easily affected by external interference to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH01M10/425H01M2010/4271Y02E60/10H02J7/0016
Inventor 王小平涂再林白青刚
Owner BYD SEMICON CO LTD
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