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Power cell source test system

A test system and power battery technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as large errors and battery damage, and achieve the effect of easy maintenance and simple structure

Inactive Publication Date: 2007-11-28
HARBIN INST OF TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the existing large error in the measurement and calculation of the working current of the power battery and the measurement and calculation of the energy SOC of the battery in the prior art. pressure damage problem

Method used

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  • Power cell source test system

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specific Embodiment approach 1

[0009] Embodiment 1: This embodiment is described in conjunction with FIG. 1. This embodiment consists of a plurality of multi-choice analog switch circuits 1, a microprocessor chip 2, a display circuit 3, a CAN transceiver 4, a feedback module circuit 5, an acousto-optic Alarm 6, button to display current battery voltage 7, button to display current battery current 8, button to display current battery SOC 9, button to display current working temperature 10, button to display whether the working status is normal 11, multiple voltage equalization detection circuits 12, current sensor 13 composition;

[0010] The enable control input end of each multiple choice one analog switch circuit 1 is all connected to each enable control output end of the microprocessor chip 2; the selection signal input end of each multiple choice one analog switch circuit 1 is all connected to On the selection signal output end of the microprocessor chip 2, the analog signal output end of each multi-cho...

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Abstract

The invention relates to a testing system for power battery source, belonging to the testing technology field of battery source. It can provide the problem that there is larger error in working current measurement to power source and measuring calculation to battery energy SOC and the error is more than +-10% so that single battery is destroyed because of over-voltage or under-voltage. Its display circuit (3) and CAN transceiver (4) are connected on the microprocessor chip (2) respectively. Multiple voltage equalization measuring circuits (2) and current sensor (13) are connected on the microprocessor chip (2) by multiple-channel analog switch circuits (1). Sound-light alarming device (6) is connected on the microprocessor chip (2) by feedback module circuit (5). The invention can measure working current of power battery source and battery energy SOC accurately. Measured current range is -200A-+200A and the accuracy of measured battery energy SOC can achieve +-4%. It is provided with simple structure and easy maintenance.

Description

technical field [0001] The invention relates to the technical field of battery source measurement. Background technique [0002] The power battery pack refers to a battery pack that can provide powerful power. It is suitable for hybrid electric vehicles, electric vehicles, portable radios, mobile data base stations, etc. The power battery pack is generally composed of multiple batteries connected in series. After multiple batteries are connected in series, there will be unbalanced discharge of each battery during use. The specific performance is that the energy SOC (State of Charge, referred to as SOC, battery power) of some batteries will be lower than that of other batteries. If you continue to discharge, then When the total voltage of the battery pack has not dropped to the protection voltage, the voltage of some single batteries has dropped to the lower limit of this battery, and if the discharge continues, this battery will be permanently damaged. However, in the pri...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 崔刚刘宏伟左德承杨孝宗关智博董剑舒燕君苗百利向琳张展罗丹彦温东新王玲阙子杨
Owner HARBIN INST OF TECH
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