Detection circuit and method, detector, battery device, means of transportation, and computer-readable storage medium
A technology of detection circuit and acquisition device, applied in battery/fuel cell control device, measurement device, measurement electricity and other directions, can solve the problem of low current detection accuracy, and achieve the effect of improving detection accuracy
Active Publication Date: 2020-07-14
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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- Description
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- Application Information
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Problems solved by technology
Based on this, in the prior art, when the current detection is realized through the shunt, the detection accuracy of the detected current is low due to the neglect of the influence of the thermoelectromotive force on the collected resistance voltage
Method used
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Embodiment 1
[0089] Embodiments of the present invention provide a detection circuit and method, a detector, a battery device, a vehicle, and a computer-readable storage medium.
[0090] Specifically, please refer to figure 2 , which is a schematic structural diagram of Embodiment 1 of the detection circuit provided by the embodiment of the present invention, as figure 2 As shown, the detection circuit 200 includes:
[0091] The shunt 210 includes a resistor 211, a current input component 212 of the resistor 11, and a current output component 213 of the resistor 11;
[0092] A temperature collecting device 220, configured to collect the first temperature of the current input component 212 and the second temperature of the current output component 213;
[0093] A voltage acquisition device 230, configured to acquire the voltage of the resistor 211;
[0094] The processing component 240 is configured to obtain a calibration voltage of the resistor 211 according to the first temperature,...
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Embodiments of the present invention provide a detection circuit and method, a detector, a battery device, a vehicle, and a computer-readable storage medium, which are applied in the technical field of batteries. In the embodiment of the present invention, the detection circuit includes: a shunt, including a resistor, a current input component of the resistor, and a current output component of the resistor; a temperature acquisition device, configured to collect the first temperature of the current input component and the current output component of the resistor. The second temperature of the current output component; the voltage acquisition device is used to collect the voltage of the resistance; the processing component is used to obtain the resistance according to the first temperature, the second temperature and the voltage of the resistance the calibration voltage. Therefore, the technical solution provided by the embodiment of the present invention can eliminate the influence of the thermoelectric electromotive force on the shunt on the current detection value, and improve the detection accuracy.
Description
【Technical field】 [0001] The present invention relates to the technical field of batteries, in particular to a detection circuit and method, a detector, a battery device, a vehicle and a computer-readable storage medium. 【Background technique】 [0002] The replacement of fuel vehicles by electric vehicles has become the development trend of the automobile industry, so how to effectively monitor the real-time current of the battery pack with high precision is particularly important for the mileage, service life and safety of electric vehicles. And reducing the error between the sampled current value and the real current is the most fundamental requirement of current detection. [0003] Currently, current detection can be realized by connecting a shunt in series in the circuit to be tested. Specifically, please refer to figure 1 , which is a schematic diagram of the top view of the shunt in the prior art, such as figure 1 As shown, the shunt 210 is provided with a resistor ...
Claims
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IPC IPC(8): G01R31/388G01R31/389G01R31/374
CPCG01R31/382G01R31/374B60L58/24B60L58/10Y02T10/70
Inventor 许佳但志敏侯贻真
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY