CN110749771A - Current acquisition system, current acquisition device and electric automobile - Google Patents
Current acquisition system, current acquisition device and electric automobile Download PDFInfo
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- CN110749771A CN110749771A CN201910979908.4A CN201910979908A CN110749771A CN 110749771 A CN110749771 A CN 110749771A CN 201910979908 A CN201910979908 A CN 201910979908A CN 110749771 A CN110749771 A CN 110749771A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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Abstract
The invention belongs to the technical field of power management, and relates to a current acquisition system, a current acquisition device and an electric automobile, wherein the current acquisition system comprises: a shunt including a positive electrode and a negative electrode. The current collector comprises a first current collecting channel and a second current collecting channel, wherein the first end of the first current collecting channel is connected with the anode of the shunt, the second end of the first current collecting channel is connected with the cathode of the shunt, the first end of the second current collecting channel is connected with the cathode of the shunt, and the second end of the second current collecting channel is connected with the anode of the shunt. Therefore, when one of the first current collecting channel and the second current collecting channel of the current collector fails, the current collector can still obtain reliable current data. Therefore, the stability and reliability of the current data acquired by the current acquisition system can be guaranteed under the low cost requirement by using the current acquisition device with the double current acquisition channels.
Description
Technical Field
The invention relates to the technical field of power management, in particular to a current acquisition system, a current acquisition device and an electric automobile.
Background
The electric automobile is a new direction for automobile development in the future, wherein the power management technology is an important component of the core technology of the electric automobile. In the power management technology of the electric automobile, the collection of current data is an indispensable operation. The reliability of current data acquisition and calculation can directly influence the accuracy of the battery SOC (State of Charge) and the driving safety of the electric automobile.
At present, the most common device for collecting current data is a current collector. However, the current collector on the market basically has only one current collecting channel, so that when the current collector on the market is used, if the current collecting channel of the current collector fails or fails, the current collector cannot collect reliable current data, and reliability and safety of related functions are affected.
In view of the above problems, those skilled in the art have sought solutions.
The foregoing description is provided for general background information and is not admitted to be prior art.
Disclosure of Invention
The invention provides a current acquisition system, a current collector and an electric automobile, and aims to ensure the stability and reliability of current data acquired by the current acquisition system under the low cost requirement by using the current collector with double current acquisition channels.
The invention provides a current collection system, comprising: a shunt including a positive electrode and a negative electrode. The current collector comprises a first current collecting channel and a second current collecting channel, wherein the first end of the first current collecting channel is connected with the anode of the shunt, the second end of the first current collecting channel is connected with the cathode of the shunt, the first end of the second current collecting channel is connected with the cathode of the shunt, and the second end of the second current collecting channel is connected with the anode of the shunt.
Furthermore, the first end of the first current collecting channel is an input end, and the second end of the first current collecting channel is an output end. The first end of the second current collecting channel is an input end, and the second end of the second current collecting channel is an output end.
Furthermore, the current collector comprises a first judgment module and a first reporting module. The first judging module is used for judging whether the current direction in the first current collecting channel is opposite to the current direction in the second current collecting channel. The first reporting module is used for acquiring and reporting current invalid information when the first judging module judges that the current direction in the first current collecting channel is the same as the current direction in the second current collecting channel.
Furthermore, the current collector also comprises a second judgment module and a second reporting module. The second judging module is used for judging whether the first current collecting channel and/or the second current collecting channel have faults or not. The second reporting module is used for acquiring and reporting channel fault information when the second judging module judges that the first current collecting channel and/or the second current collecting channel has a fault.
Further, the second reporting module includes a first reporting unit, a second reporting unit, and a third reporting unit. The first reporting unit is used for outputting the current value acquired by the second current acquisition channel and/or reporting channel fault information corresponding to the first current acquisition channel when the second judging module judges that the first current acquisition channel has a fault. The second reporting unit is used for outputting the current value acquired by the first current acquisition channel and/or reporting channel fault information corresponding to the second current acquisition channel when the second judging module judges that the second current acquisition channel has a fault. The third reporting unit is used for acquiring and reporting the double-channel fault information and/or reporting the current data invalid information when the second judging module judges that the first current collecting channel and the second current collecting channel both have faults.
Furthermore, the current collector also comprises a third judgment module, a third reporting module and a fourth reporting module. The third judging module is used for judging whether the difference value between the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel is smaller than the threshold value when the first current acquisition channel and the second current acquisition channel are normal. And the third reporting module is used for acquiring and reporting the sampling current value when the third judging module judges that the difference value is smaller than the threshold value. And the fourth reporting module is used for acquiring and reporting the current invalid information when the third judging module judges that the difference value is not less than the threshold value.
Further, the third reporting module includes a computing unit. The calculating unit is used for calculating the average value of the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel so as to acquire the sampling current value.
The invention also provides a current collector, comprising: the device comprises a first current acquisition channel, a second current acquisition channel and a processor. The first end of the first current collecting channel is connected with the anode of the current divider, and the second end of the first current collecting channel is connected with the cathode of the current divider. The first end of the second current collecting channel is connected with the negative electrode of the current divider, and the second end of the second current collecting channel is connected with the positive electrode of the current divider. The processor is used for executing the following steps: and judging whether the first current collecting channel and/or the second current collecting channel have faults or not. And if the first current collecting channel and/or the second current collecting channel are/is judged to have faults, channel fault information is obtained and reported. And if the first current acquisition channel and the second current acquisition channel are judged to be normal, acquiring and reporting a sampling current value according to the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel.
The invention also provides an electric automobile comprising the current acquisition system.
The invention provides a current acquisition system, a current collector and an electric automobile, wherein the current acquisition system comprises: a shunt including a positive electrode and a negative electrode. The current collector comprises a first current collecting channel and a second current collecting channel, wherein the first end of the first current collecting channel is connected with the anode of the shunt, the second end of the first current collecting channel is connected with the cathode of the shunt, the first end of the second current collecting channel is connected with the cathode of the shunt, and the second end of the second current collecting channel is connected with the anode of the shunt. Therefore, the first current collecting channel and the second current collecting channel which are included by the current collector are connected with the same current divider, so that the currents flowing through the first current collecting channel and the second current collecting channel can be ensured to be the same, and further, when one of the first current collecting channel and the second current collecting channel breaks down or fails, the current collector can still obtain reliable current data.
Drawings
Fig. 1 is a schematic structural diagram of a current collection system according to a first embodiment of the present invention;
fig. 2 is a schematic flow chart of information processing of a current collector according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The first embodiment:
fig. 1 is a schematic structural diagram of a current collection system according to a first embodiment of the present invention. For a clear description of the current collection system according to the first embodiment of the present invention, please refer to fig. 1.
A current collecting system provided in a first embodiment of the present invention includes: shunt a1 and current collector a 2.
The shunt a1 includes a positive electrode and a negative electrode.
In one embodiment, the current in shunt a1 may flow from the positive electrode to the negative electrode.
The current collector A2 comprises a first current collecting channel A201 and a second current collecting channel A202, wherein a first end of the first current collecting channel A201 is connected with an anode of the shunt A1, a second end of the first current collecting channel A201 is connected with a cathode of the shunt A1, a first end of the second current collecting channel A202 is connected with a cathode of the shunt A1, and a second end of the second current collecting channel A202 is connected with an anode of the shunt A1.
Specifically, the current of the first current collecting channel a201 and the current of the second current collecting channel a202 both originate from the same shunt a1, so that, under normal conditions, the current flowing through the first current collecting channel a201 is equal or nearly equal to the current flowing through the second current collecting channel a 202.
In one embodiment, the first end of the first current collecting channel a201 may be an input end, and the second end of the first current collecting channel a201 may be an output end. The first end of the second current collecting channel a202 may be an input end, and the second end of the second current collecting channel a202 may be an output end. Therefore, the second current collecting channel a202 is connected with the shunt a1 in a positive-negative reverse connection manner, and in a normal condition, the current collected by the first current collecting channel a201 is the same as or similar to the current collected by the second current collecting channel a202, and the current direction is opposite.
In other embodiments, the first end of the first current collection channel a201 may be an input end, and the second end of the first current collection channel a201 may be an output end. The first end of the second current collecting channel a202 may be an output end, and the second end of the second current collecting channel a202 may be an input end.
In one embodiment, the current collector a2 may include a current collecting chip. The model of the current collection chip may include, but is not limited to, LTC 2949. Wherein, the LTC2949 can support two independent current collection channels.
In one embodiment, the current collector a2 may include a first determining module and a first reporting module. The first judging module is used for judging whether the current direction in the first current collecting channel a201 is opposite to the current direction in the second current collecting channel a 202. The first reporting module is configured to obtain and report the current invalid information when the first determining module determines that the current direction in the first current collecting channel a201 is the same as the current direction in the second current collecting channel a 202. Therefore, the current collecting system provided by the present embodiment can detect whether the second current collecting channel a202 is connected to the shunt a1 in a positive-negative reverse connection manner. Therefore, in this embodiment, the current collector A2 determines that the current data collected by the first current collecting channel a201 and/or the current data collected by the second current collecting channel a202 are valid when the first current collecting channel a201 and the second current collecting channel a202 are normal and the current direction in the first current collecting channel a201 and the current direction in the second current collecting channel a202 are opposite, and further, may obtain and report the sampled current value according to the current data collected by the first current collecting channel a201 and the current data collected by the second current collecting channel a 202.
In an embodiment, the current collector a2 may further include a second determining module and a second reporting module. The second judging module is used for judging whether a fault exists in the first current collecting channel A201 and/or the second current collecting channel A202. The second reporting module is configured to obtain and report channel fault information when the second determining module determines that the first current collecting channel a201 and/or the second current collecting channel a202 have a fault.
In an embodiment, the current collector A2 may diagnose the first current collecting channel a201 and/or the second current collecting channel a202 to obtain a diagnosis result, so that the second determining module may determine whether there is a fault in the first current collecting channel a201 and/or the second current collecting channel a202 according to the diagnosis result. The current collector A2 may diagnose the first current collecting channel a201 and/or the second current collecting channel a202, for example, the current collector A2 may perform open circuit detection and/or ADC detection on the first current collecting channel a201 and/or the second current collecting channel a 202.
In an embodiment, the second reporting module may include a first reporting unit, a second reporting unit, and a third reporting unit. The first reporting unit is configured to output a current value acquired by the second current acquisition channel a202 and/or report channel fault information corresponding to the first current acquisition channel a201 when the second determination module determines that the first current acquisition channel a201 has a fault. For example, the output current is the current collected by the second current collecting channel a202, but the current direction is opposite to the current direction of the second current collecting channel a202 (or the current direction is the same as the current direction of the first current collecting channel a 201), and the fault of the first current collecting channel a201 is reported.
In an embodiment, when the second determining module determines that the first current collecting channel a201 has a fault, the first reporting unit may also discard the current data collected by the first current collecting channel a 201.
The second reporting unit is configured to output a current value acquired by the first current acquisition channel a201 and/or report channel fault information corresponding to the second current acquisition channel a202 when the second determination module determines that the second current acquisition channel a202 has a fault. For example, the output current is the current collected by the first current collection channel a201, the current direction is the same as the current direction of the first current collection channel a201, and a fault of the second current collection channel a202 is reported.
In an embodiment, when the second determining module determines that the second current collecting channel a202 has a fault, the second reporting unit may also discard the current data collected by the second current collecting channel a 202.
The third reporting unit is configured to obtain and report dual-channel fault information and/or report current data invalid information when the second determining module determines that both the first current collecting channel a201 and the second current collecting channel a202 have a fault.
In an embodiment, the current collector a2 may further include a third determining module, a third reporting module, and a fourth reporting module. The third judging module is configured to judge whether a difference between a current value acquired by the first current acquisition channel a201 and a current value acquired by the second current acquisition channel a202 is smaller than a threshold value when the first current acquisition channel a201 and the second current acquisition channel a202 are normal. And the third reporting module is used for acquiring and reporting the sampling current value when the third judging module judges that the difference value is smaller than the threshold value. And the fourth reporting module is used for acquiring and reporting the current invalid information when the third judging module judges that the difference value is not less than the threshold value.
In an embodiment, the third reporting module includes a calculating unit. The calculating unit is used for calculating the average value of the current value acquired by the first current acquisition channel A201 and the current value acquired by the second current acquisition channel A202 to acquire a sampling current value.
In addition, the first embodiment of the invention also provides an electric automobile, and the electric automobile comprises the current acquisition system.
A current collecting system provided in a first embodiment of the present invention includes: shunt a1, shunt a1 includes a positive electrode and a negative electrode. The current collector A2 comprises a first current collecting channel A201 and a second current collecting channel A202, wherein a first end of the first current collecting channel A201 is connected with the anode of the shunt A1, a second end of the first current collecting channel A201 is connected with the cathode of the shunt A1, a first end of the second current collecting channel A202 is connected with the cathode of the shunt A1, and a second end of the second current collecting channel A202 is connected with the anode of the shunt A1. Therefore, the first current collecting channel a201 and the second current collecting channel a202 included in the current collector A2 in the current collecting system provided in the first embodiment of the present invention are both connected to the same shunt a1, which can ensure that the currents flowing through the first current collecting channel a201 and the second current collecting channel a202 are the same, and further, when one of the first current collecting channel a201 and the second current collecting channel a202 fails or fails, the current collector A2 can still obtain reliable current data, so that the current collecting system provided in the first embodiment of the present invention can ensure the stability and reliability of the collected current data under a low cost requirement by using the current collector A2 having two current collecting channels.
Second embodiment:
a current collector a2 provided in a second embodiment of the present invention includes: a first current collection channel a201, a second current collection channel a202, and a processor (not shown in fig. 1).
The first end of the first current collecting channel a201 is connected to the positive electrode of the shunt a1, and the second end of the first current collecting channel a201 is connected to the negative electrode of the shunt a 1.
The first end of the second current collecting channel a202 is connected to the negative electrode of the shunt a1, and the second end of the second current collecting channel a202 is connected to the positive electrode of the shunt a 1.
Specifically, the current of the first current collecting channel a201 and the current of the second current collecting channel a202 both originate from the same shunt a1, so that, under normal conditions, the current flowing through the first current collecting channel a201 is equal or nearly equal to the current flowing through the second current collecting channel a 202.
In one embodiment, the first end of the first current collecting channel a201 may be an input end, and the second end of the first current collecting channel a201 may be an output end. The first end of the second current collecting channel a202 may be an input end, and the second end of the second current collecting channel a202 may be an output end. Therefore, the second current collecting channel a202 is connected with the shunt a1 in a positive-negative reverse connection manner, and in a normal condition, the current collected by the first current collecting channel a201 is the same as or similar to the current collected by the second current collecting channel a202, and the current direction is opposite.
Wherein the processor is configured to perform the following steps (the following steps omit device reference numbers):
and S21, judging whether the first current collecting channel and/or the second current collecting channel has faults or not.
In one embodiment, the step S21 of determining whether the first current collecting channel and/or the second current collecting channel has a fault includes, but is not limited to: and diagnosing the first current collecting channel and/or the second current collecting channel to obtain a diagnosis result. And judging whether the first current collecting channel and/or the second current collecting channel have faults or not according to the diagnosis result.
And S22, if the first current collecting channel and/or the second current collecting channel is judged to have faults, channel fault information is obtained and reported.
In an embodiment, in step S22, if it is determined that the first current collecting channel and/or the second current collecting channel has a fault, the channel fault information is obtained and reported, which may include, but is not limited to, the following sub-steps: s221: and if the first current acquisition channel or the second current acquisition channel has faults, outputting the current value acquired by the normal current acquisition channel and/or reporting channel fault information of the current acquisition channel corresponding to the faults. S222: and if the first current acquisition channel and the second current acquisition channel are judged to have faults, acquiring and reporting double-channel fault information and/or reporting current data invalid information.
In one embodiment, in step S221: if it is determined that the first current collecting channel or the second current collecting channel has a fault, outputting a current value collected by a normal current collecting channel, and/or reporting channel fault information of the current collecting channel corresponding to the fault, which may include, but is not limited to: and if the first current acquisition channel has a fault, outputting the current value acquired by the second current acquisition channel and/or reporting channel fault information corresponding to the first current acquisition channel. And if the second current acquisition channel has a fault, outputting the current value acquired by the first current acquisition channel and/or reporting channel fault information corresponding to the second current acquisition channel.
And S23, if the first current collecting channel and the second current collecting channel are judged to be normal, obtaining and reporting a sampling current value according to the current value collected by the first current collecting channel and the current value collected by the second current collecting channel.
In an embodiment, in step S23, if it is determined that the first current collecting channel and the second current collecting channel are normal, the method may include, but is not limited to, the following sub-steps of obtaining and reporting a sampled current value according to a current value collected by the first current collecting channel and a current value collected by the second current collecting channel: s231, if the first current collecting channel and the second current collecting channel are judged to be normal, whether the difference value of the current value collected by the first current collecting channel and the current value collected by the second current collecting channel is smaller than a threshold value or not is judged. And S232, if the difference value is smaller than the threshold value, acquiring and reporting a sampling current value according to the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel. And S233, if the difference is judged not to be smaller than the threshold value, acquiring and reporting current invalid information.
In an embodiment, the step of obtaining and reporting the sampled current value according to the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel may include, but is not limited to: and calculating the average value of the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel to acquire a sampling current value.
In an embodiment, in the step of determining whether the difference between the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel is smaller than the threshold, the method may further include, but is not limited to: and judging whether the current direction in the first current collecting channel is opposite to the current direction in the second current collecting channel. And if the current direction in the first current acquisition channel is judged to be the same as the current direction in the second current acquisition channel, acquiring and reporting current invalid information. And if the current direction in the first current acquisition channel is opposite to the current direction in the second current acquisition channel, judging whether the difference value between the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel is smaller than a threshold value.
A current collector a2 provided in a second embodiment of the present invention includes: a first current collection channel A201, a second current collection channel A202 and a processor. The first end of the first current collecting channel a201 is connected to the positive electrode of the shunt a1, and the second end of the first current collecting channel a201 is connected to the negative electrode of the shunt a 1. The first end of the second current collecting channel A202 is connected to the negative terminal of the shunt A1, and the second end of the second current collecting channel A202 is connected to the positive terminal of the shunt A1. The processor is used for executing the following steps: and S21, judging whether the first current collecting channel A201 and/or the second current collecting channel A202 has faults or not. And S22, if the first current collecting channel A201 and/or the second current collecting channel A202 are judged to have faults, channel fault information is obtained and reported. And S23, if the first current collecting channel A201 and the second current collecting channel A202 are judged to be normal, obtaining and reporting a sampling current value according to the current value collected by the first current collecting channel A201 and the current value collected by the second current collecting channel A202. Therefore, the current collector A2 provided in the second embodiment of the present invention can report channel fault information when the first current collecting channel a201 and/or the second current collecting channel a202 have a fault, or report more accurate current data when both the first current collecting channel a201 and the second current collecting channel a202 are normal, so as to achieve the purpose of improving the reliability of the uploaded current data.
The third embodiment:
fig. 2 is a schematic flow chart of information processing of a current collector according to a third embodiment of the present invention. For a clear description of the current collector a2 provided by the third embodiment of the present invention, reference may be made to fig. 1 and 2.
A current collector a2 provided in a second embodiment of the present invention includes: a first current collection channel a201, a second current collection channel a202, and a processor (not shown in fig. 1).
The first end of the first current collecting channel a201 is connected to the positive electrode of the shunt a1, and the second end of the first current collecting channel a201 is connected to the negative electrode of the shunt a 1.
The first end of the second current collecting channel a202 is connected to the negative electrode of the shunt a1, and the second end of the second current collecting channel a202 is connected to the positive electrode of the shunt a 1.
Specifically, the current of the first current collecting channel a201 and the current of the second current collecting channel a202 both originate from the same shunt a1, so that, under normal conditions, the current flowing through the first current collecting channel a201 is equal or nearly equal to the current flowing through the second current collecting channel a 202.
In one embodiment, the first end of the first current collecting channel a201 may be an input end, and the second end of the first current collecting channel a201 may be an output end. The first end of the second current collecting channel a202 may be an input end, and the second end of the second current collecting channel a202 may be an output end. Therefore, the second current collecting channel a202 is connected with the shunt a1 in a positive-negative reverse connection manner, and in a normal condition, the current collected by the first current collecting channel a201 is the same as or similar to the current collected by the second current collecting channel a202, and the current direction is opposite.
Referring to fig. 2, wherein the processor is configured to perform the following steps (the following steps omit device numbers):
s31, judging whether the first current collecting channel has faults or not;
s32, if the first current collecting channel is judged to have faults, judging whether the second current collecting channel has faults or not;
in an embodiment, step S32 may be followed by, but is not limited to, the following steps: s321, if the second current collecting channel is judged to be normal, outputting the current value collected by the second current collecting channel and/or reporting channel fault information corresponding to the first current collecting channel. And S322, if the second current acquisition channel is judged to have a fault, acquiring and reporting double-channel fault information and/or reporting current data invalid information.
S33, if the first current collecting channel is normal, judging whether the second current collecting channel has a fault;
in an embodiment, step S33 may be followed by, but is not limited to, the following steps: s331: and if the second current acquisition channel has a fault, outputting the current value acquired by the first current acquisition channel and/or reporting channel fault information corresponding to the second current acquisition channel. S332: and if the second current acquisition channel is judged to be normal, acquiring and reporting a sampling current value according to the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel.
In one embodiment, in step S332: if the second current collecting channel is determined to be normal, obtaining and reporting the sampled current value according to the current value collected by the first current collecting channel and the current value collected by the second current collecting channel, which may include, but is not limited to: and judging whether the difference value between the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel is smaller than a threshold value. And if the difference value is smaller than the threshold value, acquiring and reporting a sampling current value according to the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel. And if the difference is judged to be not less than the threshold value, acquiring and reporting current invalid information.
In an embodiment, the step of obtaining and reporting the sampled current value according to the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel may include, but is not limited to: and calculating the average value of the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel to acquire a sampling current value.
In an embodiment, in the step of determining whether the difference between the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel is smaller than the threshold, the method may further include, but is not limited to: and judging whether the current direction in the first current collecting channel is opposite to the current direction in the second current collecting channel. And if the current direction in the first current acquisition channel is judged to be the same as the current direction in the second current acquisition channel, acquiring and reporting current invalid information. And if the current direction in the first current acquisition channel is opposite to the current direction in the second current acquisition channel, judging whether the difference value between the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel is smaller than a threshold value.
The current collector A2 provided in the third embodiment of the present invention can report channel fault information when the first current collecting channel a201 and/or the second current collecting channel a202 have a fault, or report more accurate current data when the first current collecting channel a201 and the second current collecting channel a202 are both normal, thereby achieving the purpose of improving the reliability of the uploaded current data.
The fourth embodiment:
the fourth embodiment of the present invention also provides a computer-readable storage medium that is integrated in the current collector a2 provided as the second embodiment or the third embodiment, and that stores a computer program that, when executed by a processor, implements the steps described above, such as the steps S31 to S33 shown in fig. 2.
In an embodiment, the computer readable storage medium provided by the embodiment may include any entity or device capable of carrying computer program code, a recording medium, such as ROM, RAM, magnetic disk, optical disk, flash memory, and the like.
The computer program stored in the computer-readable storage medium according to the fourth embodiment of the present invention can achieve the purpose of improving the reliability of the reported current data when being executed by the processor.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A current collection system, comprising:
a shunt comprising a positive electrode and a negative electrode;
the current collector comprises a first current collecting channel and a second current collecting channel, wherein the first end of the first current collecting channel is connected with the anode of the shunt, the second end of the first current collecting channel is connected with the cathode of the shunt, the first end of the second current collecting channel is connected with the cathode of the shunt, and the second end of the second current collecting channel is connected with the anode of the shunt.
2. The current-harvesting system of claim 1, wherein a first end of the first current-harvesting channel is an input end and a second end of the first current-harvesting channel is an output end;
the first end of the second current collecting channel is an input end, and the second end of the second current collecting channel is an output end.
3. The current collection system of claim 2, wherein the current collector comprises a first determination module and a first reporting module;
the first judging module is used for judging whether the current direction in the first current collecting channel is opposite to the current direction in the second current collecting channel;
the first reporting module is configured to obtain and report current invalid information when the first determining module determines that the current direction in the first current collecting channel is the same as the current direction in the second current collecting channel.
4. The current collection system according to claim 1 or 2, wherein the current collector further comprises a second judgment module and a second reporting module;
the second judging module is used for judging whether the first current collecting channel and/or the second current collecting channel have faults or not;
the second reporting module is configured to obtain and report channel fault information when the second determining module determines that the first current collecting channel and/or the second current collecting channel has a fault.
5. The current collection system of claim 4, wherein the second reporting module comprises a first reporting unit, a second reporting unit, and a third reporting unit;
the first reporting unit is configured to output a current value acquired by a second current acquisition channel and/or report channel fault information corresponding to the first current acquisition channel when the second determining module determines that the first current acquisition channel has a fault;
the second reporting unit is configured to output a current value acquired by the first current acquisition channel and/or report channel fault information corresponding to the second current acquisition channel when the second determination module determines that the second current acquisition channel has a fault;
the third reporting unit is configured to acquire and report dual-channel fault information and/or report current data invalid information when the second determining module determines that the first current collecting channel and the second current collecting channel both have a fault.
6. The current collection system of claim 1, wherein the current collector further comprises a third determination module, a third reporting module, and a fourth reporting module;
the third judging module is used for judging whether the difference value between the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel is smaller than a threshold value or not when the first current acquisition channel and the second current acquisition channel are normal;
the third reporting module is configured to obtain and report a sampled current value when the third determining module determines that the difference is smaller than the threshold;
the fourth reporting module is configured to obtain and report current invalid information when the third determining module determines that the difference is not smaller than the threshold.
7. The current collection system of claim 6, wherein the third reporting module comprises a computing unit;
the calculating unit is used for calculating the average value of the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel so as to acquire the sampling current value.
8. A current collector, comprising: the device comprises a first current acquisition channel, a second current acquisition channel and a processor;
the first end of the first current collecting channel is connected with the anode of the current divider, and the second end of the first current collecting channel is connected with the cathode of the current divider;
the first end of the second current collecting channel is connected with the negative electrode of the current divider, and the second end of the second current collecting channel is connected with the positive electrode of the current divider;
the processor is configured to perform the steps of:
judging whether the first current collecting channel and/or the second current collecting channel have faults or not;
if the first current collecting channel and/or the second current collecting channel are/is judged to have faults, channel fault information is obtained and reported;
and if the first current acquisition channel and the second current acquisition channel are judged to be normal, acquiring and reporting a sampling current value according to the current value acquired by the first current acquisition channel and the current value acquired by the second current acquisition channel.
9. An electric vehicle comprising the current collection system of claim 1.
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