Vehicular power cell diagnosis method and alarm thereof

A diagnostic method and vehicle technology, applied to current collectors, vehicle components, battery circuit devices, etc., can solve problems such as not considering the influence of temperature

Inactive Publication Date: 2009-08-05
向琪 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S. Patent US 2007 / 0145950 distinguishes the power supply status of the vehicle battery into different modes such as vehicle stop and vehicle normal start, and uses voltage and current detection in conjunction with noise mode to generate battery power management. However, this technology does not consider the impact of temperature. The purpose of forewarning the driver's attention is still limited

Method used

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  • Vehicular power cell diagnosis method and alarm thereof
  • Vehicular power cell diagnosis method and alarm thereof
  • Vehicular power cell diagnosis method and alarm thereof

Examples

Experimental program
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Effect test

Embodiment 4

[0104] When the vehicle generator voltage and battery characteristics described in the fourth embodiment are at the reference temperature (25°C): the normal power supply voltage range of the vehicle generator VEL=29.0V, VEH=31.2V; the minimum current value when the vehicle starts normally AEL= 60A; the upper limit of the safety warning voltage of the battery output VHH=33.5V; the lower limit of the battery voltage safety warning VRLH=25.0V when the vehicle is running normally; the upper limit of the battery voltage for the safety warning when the vehicle is stopped VSLH=22.0V and the lower limit VSLL=20.6V; The minimum voltage rise slope during normal start-up Smin = 0.15V / sec; temperature compensation coefficient

[0105] [k 1 k 2 k 3 ]=[-4.96×10 -5 4.50×10 -5 -1.81×10 -5 ].

[0106]

[0107] For a car powered by a 12V battery for ignition, the following methods are used to determine the battery status of the vehicle (but for the different needs of the user, one or a combination...

Embodiment 2

[0182] Such as Figure 4 , Is the second embodiment of the vehicle battery alarm 20 of the present invention. The vehicle battery alarm 20 includes: a central processing unit 23 and a voltage connected to the central processing unit 23 for detecting the voltage at both ends of the vehicle battery and the loop current The current detection circuit 21, the DIP selector 253 for parameter setting of the alarm, the screen display 272 for displaying the judgment result or value, the voice warning device 281 for issuing the judgment result, and the battery for controlling the vehicle when parking The relay 293 for continuing power supply also includes a protection circuit 29 connected to the front end of the voltage and current detection circuit 21, the protection circuit 29, and the other end is connected to the positive electrode of the battery.

[0183] The protection circuit 29 includes two parts, a short circuit protection circuit 291 and a reverse polarity protection circuit 292, s...

no. 5 example

[0206] Vehicle battery alarm

[0207] Such as Figure 8 , Is the fifth embodiment of the vehicle battery alarm 20 of the present invention, which is directly connected to a vehicle battery 10 with an engine device. The vehicle battery 10 further includes a vehicle main battery 11 and a vehicle backup battery 12. The vehicle battery alarm 20 is connected in parallel with the engine generator 918 and the starting system 913. The alarm 20 specifically includes: a central processing unit 23, a voltage and current detection circuit 21, a temperature sensing circuit 22, a voltage compensation circuit 24, a data input device 25, a sound alarm device 28, a display device 27, a protection circuit 29, and a relay 293.

[0208] The voltage and current detection circuit 21, the voltage compensation circuit 24, the sound alarm device 28, the display device 27, the buzzer 281, the voice alarm 282, the light emitting diode display 271, the screen display 272 and the EL lamp display 273 are all t...

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PUM

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Abstract

The invention relates to a method for diagnosing the power state of a vehicle battery and an annunciator which depends on the method; wherein, the method and the device are mainly applied to the battery of the vehicle which is started by the power of the battery and has an engine; the diagnosis method comprises judging that whether the vehicle battery is abnormal or not under the conditions that the vehicle is normally started, a power generator normally supplies power, the power generator stops, the battery power is consumed and the like; the diagnosis method utilizes the voltage of the battery, current matching and critical restriction and takes the battery temperature as voltage compensation. The battery annunciator comprises a voltage and current detection circuit, a data input device, an abnormality judgment device (central processing unit), a sound alarm device, a display device and the like. The method and the device can automatically diagnose the battery efficiency during the stopping and normal running of the vehicle, and can avoid the difficulty that the vehicle can not be started due to failure of the battery and the danger that the vehicle can not be started as the power supply capability of the battery is reduced during low temperature.

Description

Technical field [0001] The invention relates to a method for diagnosing the power state of a vehicle battery and a diagnostic alarm using the method, in particular to a vehicle battery power change and performance judgment to provide drivers with vehicle battery usage information and improve vehicle safety Device and method. Background technique [0002] General vehicles, especially vehicles that use batteries to start the engine, need to rely on batteries with sufficient discharge capacity to provide sufficient voltage and current (electricity) to start the engine to start the vehicle, and various vehicle batteries are produced by chemical reactions. electricity. When the vehicle battery is used for a long time, its performance will gradually decline or be damaged, resulting in a decline in power storage and power supply capacity. Especially in low-temperature areas in winter, the battery power cannot be accurately estimated due to battery decline. It may happen that the vehicle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/14G01R31/36G01R19/165H02H3/00
Inventor 向琪王锦树
Owner 向琪
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