Voltage detection circuit for low quiescent current, and automobile
A voltage detection circuit and quiescent current technology, applied in the direction of measuring current/voltage, measuring device, measuring electrical variables, etc., can solve the problem of no way to achieve zero quiescent current, improve user experience, improve safety and reliability , the effect of low quiescent current
Active Publication Date: 2019-09-06
HUIZHOU DESAY SV AUTOMOTIVE
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Usually, the voltage detection of the battery line needs to first sample the voltage through resistor division and then detect the sampled voltage. When the quiescent current is 32.25uA, there is no way to meet the product demand of zero quiescent current
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0027] figure 1 It shows a structural diagram embodying the output-input relationship between various circuits in the voltage detection circuit provided by the embodiment of the present invention; figure 2 A circuit structure diagram of the voltage sampling circuit 4 provided by the embodiment is shown; image 3 A circuit structure diagram of the voltage conversion circuit 3 provided by the embodiment is shown; Figure 4 The circuit structure diagram of the ignition power supply provided by the embodiment is shown.
[0028] A voltage detection circuit with low quiescent current, see figure 1 , including a power supply circuit 1, an ignition circuit 2, a voltage conversion circuit 3, a voltage sampling circuit 4 and a detection circuit 5. In the circuit, the power supply circuit 1 includes a battery power supply KL30, which is used to provide a power supply voltage to the voltage conversion circuit 3 and the voltage sampling circuit 4; the ignition power supply includes an ...
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 PUM
Login to View More Abstract
The invention relates to the technical field of automobile voltage detection, in particular to a voltage detection circuit for low quiescent current, and an automobile. The voltage detection circuit for the low quiescent current comprises a power supply circuit, an ignition circuit and a voltage conversion circuit, wherein the power supply voltage of the power supply circuit and the enable signalof the ignition circuit are received, and according to the enable signal, conversion voltage and a reset signal are output; and the input end of a voltage sampling circuit is connected with the outputend of the power supply circuit, and sampling voltage is output according to the conversion voltage of the voltage conversion circuit. By use of the circuit, through the ignition circuit, the enablesignal is output to awaken the voltage conversion circuit, the voltage conversion circuit outputs conversion voltage to the voltage sampling circuit, the voltage sampling circuit is started, samplingvoltage is output to the detection circuit, and the detection circuit receives the sampling voltage, the conversion voltage and the reset signal so as to begin to detect. During flameout, the ignitioncircuit does not input the enable signal, the detection circuit does not work, so that the quiescent current is effectively lowered, and the quiescent current is zero under a standby situation.
Description
technical field [0001] The invention relates to the technical field of automobile voltage detection, in particular to a voltage detection circuit with low quiescent current and an automobile. Background technique [0002] With the rise of electric vehicles, the requirements for quiescent current in automotive electronics are getting stricter. For various auto parts, more and more car manufacturers require very low quiescent current, or even zero quiescent current. [0003] In actual automotive products, the chips of vehicle components need to detect the voltage of the battery line, so as to facilitate corresponding control. Usually, the voltage detection of the battery line needs to first sample the voltage through resistor division and then detect the sampled voltage. When the quiescent current is 32.25uA, there is no way to meet the product demand of zero quiescent current. Therefore, how to reduce the quiescent current of the voltage detection circuit of the battery lin...
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 Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/00
Inventor 郭泽彬刘国钱黄玉美张梦梦肖敏陈志泽
Owner HUIZHOU DESAY SV AUTOMOTIVE