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Intelligent battery current detection circuit of dual integrator based on flow work timing

A working sequence, double integrator technology, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve problems such as large impact on accuracy and stability

Inactive Publication Date: 2011-06-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem in the existing intelligent battery current detection circuit that the limitation of the integral constant RC has a great influence on the accuracy and stability, the present invention proposes a dual integrator intelligent battery current detection circuit based on the flow-type working sequence

Method used

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  • Intelligent battery current detection circuit of dual integrator based on flow work timing
  • Intelligent battery current detection circuit of dual integrator based on flow work timing
  • Intelligent battery current detection circuit of dual integrator based on flow work timing

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specific Embodiment approach 1

[0011] Specific implementation mode one: combine Image 6 Describe this embodiment, this embodiment includes sensitive resistance module 2 and data bus 7; It also includes flow-through operation sequence control module 3, double integrator charge detection assembly 4, double integrator discharge detection assembly 5 and timer module 6; The first voltage signal acquisition end of the sensitive resistance module 2 is connected to the positive pole of the battery pack 1 through the load, and the second voltage signal acquisition end of the sensitive resistance module 2 is respectively connected to the negative pole of the battery pack 1 and the power ground. The third voltage signal output terminal is connected to the first voltage signal input terminal of the pipeline operation sequence control module 3, and the first charging voltage signal output terminal and the second charging voltage signal output terminal of the pipeline operation sequence control module 3 are respectively ...

specific Embodiment approach 2

[0012] Specific implementation mode two: combination Figure 10 Describe this embodiment, the first difference between this embodiment and the specific embodiment is that the pipeline operation sequence control module 3 is composed of a detection voltage comparator 3-1, a first inverter 3-2, a first charging data selector 3 -3. Second charge data selector 3-4, third charge data selector 3-5, second inverter 3-6, third inverter 3-7, first discharge data selector 3-8 , the second discharge data selector 3-9, the third discharge data selector 3-10, the charge reference voltage module 3-11 and the discharge reference voltage module 3-12; detect the positive phase input terminal of the voltage comparator 3-1 It is both the first voltage signal input terminal of the pipeline operation timing control module 3; the negative phase input terminal of the detection voltage comparator 3-1 is grounded; the output terminal of the detection voltage comparator 3-1 is respectively connected to ...

specific Embodiment approach 3

[0013] Specific implementation mode three: combination Figure 8 Describe this embodiment, the difference between this embodiment and specific embodiment 1 or 2 is that the double integrator charge detection component 4 is composed of a first charge integrator module 4-1, a second charge integrator module 4-5, a first charge comparator 4-2, second charge comparator 4-6, first charge counter block 4-3, second charge counter block 4-7, first charge latch block 4-4 and second charge latch The charging voltage signal input terminal of the first charging integrator module 4-1 and the charging voltage signal input terminal of the second charging integrator module 4-5 are the first of the double integrator charging detection component 4. The charging voltage signal input terminal and the second charging voltage signal input terminal, the charging voltage signal output terminal of the first charging integrator module 4-1 is connected with the forward voltage input terminal of the firs...

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Abstract

The invention relates to an intelligent battery current detection circuit of a dual integrator based on flow work timing, aiming at solving the problem that current intelligent battery current detection circuits are greatly influenced by time constant precision and stability. A first charging voltage signal output end, a second charging voltage signal output end, a third discharge voltage signal output end and a fourth discharge voltage signal output end are respectively connected with a first charging voltage signal input end and a second charging voltage signal input end of a charge detecting module of the dual integrator and a first discharge voltage signal input end and a second discharge voltage signal input end of a discharge detecting module of the dual integrator; a fifth chargingvoltage signal output end and a sixth charging voltage signal output end of the charge detecting module and the discharge detecting module of the dual integrator are respectively connected with a data bus; five clocked signal output ends of a system clock are respectively connected with a clocked signal input end of a timer module, a third clocked signal input end and a fourth clocked signal input end of the charge detecting module and the discharge detecting module of the dual integrator. The intelligent battery current detection circuit has high measurement precision and fast measurement speed and the output of numbers is independent of the time constant.

Description

technical field [0001] The invention relates to a current detection circuit, in particular to an intelligent battery current detection circuit. Background technique [0002] In recent years, the rapid development of portable electronic products has promoted the upgrading of battery technology. Nickel-chromium batteries, nickel-metal hydride batteries and ordinary disposable batteries can no longer meet the increasingly advanced modern times in terms of weight, volume-to-energy ratio, and recyclable charge-discharge utilization. Power requirements for portable devices. Especially recently, the miniaturization and weight reduction of electronic products represented by mobile phones and the high performance of secondary batteries represented by smart batteries used in notebook computers have placed higher demands on batteries. [0003] However, since the charging and discharging process of secondary batteries is a nonlinear system, affected by the ambient temperature and uniqu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36G01R22/06
Inventor 王永生喻明艳张鹏南来逢昌李景虎
Owner HARBIN INST OF TECH
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