Voltage averaged allocator for charging and discharging lithium battery

A voltage averaging, lithium battery technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as power loss
CN1874106AActive Publication Date: 2006-12-06哈尔滨光宇电子有限公司
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
哈尔滨光宇电子有限公司
Publication Date
2006-12-06

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

Protection circuit of charging and discharging voltage in cascaded lithium batteries is composed of N-1 pieces of voltage sampling circuit (1), N-2 pieces of voltage comparator (2), N-1 pieces of branch circuit (3), (N-1) / 4 pieces of threshold restriction circuit (4), and sequential arranged N nodes. (1) and (3) are connected to each adjacent node in parallel. Output end of each (1) is connected to each input end of adjacent two (2) respectively. Two output ends of each (2) are connected to each controlled and of adjacent two (3) respectively. The said two (3) are corresponding to two (1) of inputting signal to (2). (4) is connected in parallel to outermost two nodes in the adjacent four nodes. Output end of each (4) is connected to two controlled ends of (2) respectively. Two (2) are connected to four nodes connected to (4) I parallel. Since (4) is setup, voltage comparator is cut off when lithium batteries supply power for consumers so as not to waste energy of lithium batteries.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention relates to a charging and discharging voltage protection circuit for a series-connected lithium battery pack when the power supply is uninterrupted. Background technique:

[0002] Lithium batteries have strict requirements on current and voltage during charging and discharging. Once exceeded, they will have serious consequences in terms of safety and life. Therefore, when lithium batteries are used in series, each group of lithium batteries requires the same parameters. Due to the cumulative error of each process in the production process of lithium batteries, various parameters of each finished lithium battery will be different, so when used in series, the voltage on each single lithium battery will be different, especially when charging , It is very easy to cause the voltage of a certain lithium battery to exceed the rated value, and in severe cases, it will cause irreversible damage and even cause safety accidents. The same is true for dis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More