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A battery management system and management method

A technology of a battery management system and a management method, applied in the field of battery management, can solve problems such as battery voltage imbalance, and achieve the effects of guaranteed battery capacity, stable performance and simple structure

Active Publication Date: 2019-04-09
ZHUHAI LEADSUN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems existing in the prior art, the present invention provides a battery voltage imbalance problem caused by battery self-consumption, which has high charging and discharging efficiency, stable and reliable performance, and guaranteed battery capacity. Long-life battery management system and management method

Method used

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  • A battery management system and management method

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] Such as figure 1 as shown in:

[0016] The embodiment of the present invention provides a battery management system and management method, including a plurality of batteries 1 connected in series, a charging and discharging circuit 2 and a control chip 3, the charging and discharging terminals of the charging and discharging circuit 2 are connected to the battery 1, and the signal The input end is conductively connected with the control chip 2; each battery 1 is connected in series with a first switch 4 and in parallel with a second switch 5, and the first switch 4 and the second switch 5 a...

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Abstract

The invention relates to a battery management system and management method. The system comprises a plurality of batteries that are connected in series, a charging and discharging circuit and a control chip, wherein a charging and discharging end of the charging and discharging circuit is connected with each battery, and a signal input end is connected with the control chip in a conducting manner; each battery is connected with a first switch in series and is connected with a second switch in parallel, both of the first switch and the second switch are connected with the control chip in the conducting manner, and the second switches of two adjacent batteries are connected in series; and the system further comprises a plurality of voltage sampling units which are connected with the plurality of batteries in a one-to-one correspondence manner, and a sampling signal output end of each voltage sampling unit is connected with the control chip in the conducting manner. In this way, a real-time voltage of each battery can be collected, one or more batteries excluding the battery having the highest voltage are synchronously charged, or one or more batteries excluding the battery having the highest voltage are synchronously discharged, the circulation is carried out until the electric quantity of all batteries is simultaneously charged or discharged, the problem of unbalance caused by self consumption of the batteries is solved, the charging and discharging efficiency is high, the battery capacity is guaranteed, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of battery management, and in particular relates to a battery management system and a management method. Background technique [0002] At present, batteries (rechargeable lithium batteries) on the market are widely used. These batteries are usually battery packs, which are formed by connecting multiple batteries in series or in parallel. However, due to the self-consumption of the battery itself (about 3% to 8%), The voltage of each battery is different and unbalanced; in this way, during the charging process of multiple batteries connected in series, if one of the batteries is fully charged and reaches the set maximum voltage value, it will stop charging and other batteries will not be fully charged. , resulting in a decrease in battery capacity; on the contrary, during the discharge process of multiple batteries connected in series, if one of the batteries is fully discharged and reaches the set minimum vo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0016H02J7/0022
Inventor 刘伟平
Owner ZHUHAI LEADSUN ELECTRONICS TECH
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