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Digital accumulator battery

A battery pack and storage battery technology, which is applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems that the terminal voltage will not be strictly consistent, the service life of the battery pack is short, and the floating charge voltage of the battery is offset.

Inactive Publication Date: 2009-09-30
张佳宾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the battery pack is always charged in series. Take the 48V14Ah battery pack as an example: it is composed of six times four batteries in series and a total of 24 batteries connected in series. Due to individual differences in the batteries, the terminal voltage of each battery will not be strictly consistent. Although the overall float voltage may be normal, the float voltage of individual batteries may have been seriously shifted, or even reversed
[0010] From these points alone, it can be seen that the current constant voltage and floating charging methods commonly used by electric bicycles cannot adapt to the various changes in the internal microstructure and external ambient temperature during the complete life cycle of the battery pack, which causes the battery pack to change over time. The decisive factor for the short service life of the vehicle, especially in the application of more battery packs in series such as electric tricycles and electric vehicles, has become a limiting factor

Method used

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Examples

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Embodiment 1

[0035] Please see attached Figure three . According to attached Figure three Make a measurement and control module with a volume of 20 by 40 by 4 mm, and encapsulate it in a partially detachable shell of the battery pack. Attached below Figure three The details of this embodiment will be described.

[0036] The battery body temperature sensors R17 and R23 are fixed close to the inner wall of the packaging cavity of the integrated measurement and control module, and then packaged with a heat insulation layer and thermally isolated from the outer wall.

[0037] The temperature signal conditioning circuit is composed of constant voltage sources U1, R8, constant current sources Q1, R2, C2, and correction resistors R16 and R19. The temperature signal transmission circuit composed of Q3, R12, and C8 reads the value of the temperature signal conditioning circuit and feeds it to the digital state machine. In the self-adaptive program-controlled constant current integral chargi...

Embodiment 2

[0050] Please see attached Figure four . This example does not need the support of the microcontroller to realize the adaptive program-controlled constant current integral charging method, which is more suitable for low-cost applications, such as electric bicycle battery packs. According to attached Figure four Make a measurement and control module with a volume of 20 by 40 by 4 mm, and encapsulate it in a partially detachable housing of the battery pack. Attached below Figure four The details of this embodiment will be described.

[0051] The battery body temperature sensors R17 and R23 are fixed close to the inner wall of the packaging cavity of the integrated measurement and control module, and then packaged with a heat insulation layer and thermally isolated from the outer wall.

[0052] The temperature signal conditioning circuit is composed of: constant voltage source U1, R8, constant current source Q1, R2, C2, and correction resistor R16, R19. It is used to corr...

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Abstract

The invention relates to an accumulator battery, in particular to an accumulator battery digitizing real-time status measuring and control data of the accumulator battery and transmitting the data to an adaptive charger to realize digitalization of measuring and control in the charging process. Parameter setting in the charging process is a deciding factor of the service life of the accumulator battery along a vehicle; in particular, charging voltage adapts to continuous changes of an internal microstructure of the accumulator battery and external environmental temperature; and in order to ensure that a proper charging process is always kept in the complete life cycle of the accumulator battery, the charger is required to have the capacity of automatically adapting to the changes, so that the accumulator battery is required to be capable of outputting the real-time status measuring and control data to provide support for the charging process. Because related physical descriptors are weak, effective perception and reliable transmission are master keys of success. Therefore, the accumulator battery provides a digitization proposal, comprises a measuring and control module, interface specification and a packaging cavity, and is applicable to electric automobiles and electric bicycles with overlong series charging.

Description

technical field [0001] The invention relates to a storage battery pack, in particular to a digital measurement and control storage battery pack which digitizes the real-time state measurement and control data of the storage battery pack and transmits it to an adaptive charger. Background technique [0002] Traditional lead-acid battery packs can easily achieve 1500-2000 deep cycles decades ago, and the service life of floating charge can be as long as 15 to 20 years (see "Lead-acid battery manufacturing and Process Control", page 12 of Chapter 1; "Charger Circuit Design and Application" published by People's Posts and Telecommunications Publishing House, page 15 of Chapter 2). However, the deep cycle service life of a good valve-regulated sealed lead-acid battery pack can only reach more than 300 times. [0003] Under normal circumstances, when the cycle life of the battery pack reaches 300 times, due to the obvious change in the liquid saturation of the separator, a fast c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48G05D29/00
CPCY02E60/12Y02E60/10
Inventor 张佳宾
Owner 张佳宾
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