Detection circuit and method, detector, battery device, transportation tool and computer readable storage medium
A detection circuit and detection method technology, which is applied in battery/fuel cell control devices, measuring devices, measuring electricity, etc., can solve the problems of low current detection accuracy and achieve the effect of improving detection accuracy
Active Publication Date: 2018-03-30
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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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 invention provide a detection circuit and method, detector, battery device, transportation tool and computer readable storage medium, and are applied to the technical field of batteries. In the embodiments of the invention, the detection circuit includes a shunt which includes a resistor, a current input module of the resistor and a current output module of the resistor; a temperature acquisition device used for acquiring first temperature of the current input module and second temperature of the current output module; a voltage acquisition device used for acquiring voltageof the resistor; and a processing module used for obtaining calibration voltage of the resistor according to the first temperature, the second temperature and the voltage of the resistor. Thus, the technical scheme provided by the embodiments of the invention can eliminate influence of thermal electromotive force on the shunt on a current detection value, thereby improving detection precision.
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): G01R31/36
CPCG01R31/382G01R31/374B60L58/24B60L58/10Y02T10/70
Inventor 许佳但志敏侯贻真
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY