CN115877276A - Line sequence calibration method and line sequence calibration device - Google Patents
Line sequence calibration method and line sequence calibration device Download PDFInfo
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- CN115877276A CN115877276A CN202211633843.6A CN202211633843A CN115877276A CN 115877276 A CN115877276 A CN 115877276A CN 202211633843 A CN202211633843 A CN 202211633843A CN 115877276 A CN115877276 A CN 115877276A
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Abstract
The invention discloses a line sequence calibration method and a line sequence calibration device, wherein a calibration tool control module capable of outputting short-circuit, open-circuit and high-resistance voltage signal tri-states is used for replacing the position of a battery bin in a series component capacitance device, the on-off state of a series switch and a bypass switch of the series component capacitance device is controlled according to the category of a wire harness to be detected, the DC-DC detection is carried out on a bypass board through the voltage output state of the calibration tool control module, and whether the line sequence of the wire harness to be detected is correct or not is judged according to signals at two ends of the bypass board and/or states at two ends of the calibration tool control module, so that the correctness of the wire harness sequence of each channel of the series component capacitance device is automatically identified, the manual line sequence calibration is not needed, and the technical problems of low efficiency and low reliability of the manual line sequence calibration of the series component capacitance device are solved.
Description
Technical Field
The invention relates to the technical field of power battery formation and capacity grading, in particular to a line sequence calibration method and a line sequence calibration device.
Background
The lithium power battery has the advantages of high energy, high battery voltage, wide working temperature, long storage life and the like, and is widely applied in various fields. After the lithium power battery is manufactured, the process of activating the positive and negative electrode substances in the lithium power battery in a certain charging and discharging mode to improve the charging and discharging performance of the battery and the comprehensive performance of self-discharging, storage and the like is called formation. The series formation and capacity grading equipment is equipment for a formation and capacity grading process for manufacturing and producing lithium ion power batteries, wherein lithium power batteries are charged and discharged after being connected in series.
In the production and manufacturing process of the lithium ion power battery, the serial formation and capacity grading equipment is used for carrying out formation and capacity grading on the lithium ion power battery, and a plurality of longitudinal wire harnesses can be used. Under the condition that the wire harnesses are many and miscellaneous, the manual connection wire harness is easy to connect wrong wires, the manual handheld general detection instrument is used for carrying out the wire sequence inspection in a short distance, the efficiency is low, the reliability is not high, and under the high-power occasion, in case of connecting the wrong wire harness, not only safety accidents can be brought, but also more serious chain reaction can be caused.
Disclosure of Invention
The invention provides a line sequence calibration method and a line sequence calibration device, which are used for solving the technical problems of low efficiency and low reliability of a mode for manually calibrating a line sequence of serial chemical composition capacity-sharing equipment.
In view of the above, a first aspect of the present invention provides a line sequence calibration method, including:
s1, a calibration tool control module capable of outputting short-circuit, open-circuit and high-resistance voltage signal tristates is connected to the position of a battery bin of each detection channel in series-connection capacity grading equipment, wherein the calibration tool control module is provided with signal voltage by a signal source and is controlled to switch the tristates by a controller;
and S2, controlling the opening and closing states of a serial switch and a bypass switch of the serial component capacitance equipment and the voltage output state of a calibration tool control module according to the category of the wire harness to be detected, carrying out DC-DC detection on a bypass board, and judging whether the line sequence of the wire harness to be detected is correct according to signals at two ends of the bypass board and/or the states at two ends of the calibration tool control module, wherein the serial switch is a switch of a serial battery passage, and the bypass switch is a switch for bypassing the battery passage.
Optionally, step S2 includes:
if the wire harness type to be detected is a voltage wire, executing the following steps:
t1, controlling a series switch of the current detection channel to be closed and a bypass switch to be opened;
t2, controlling the current detection channel to output at a rated voltage through a calibration tool control module of the current detection channel, disconnecting a series switch of the current detection channel and closing a bypass switch;
t3, reading voltage line voltage V1 and battery probe voltage V2 on two sides of the current detection channel;
and T4, comparing the voltage V1 of the voltage line with the voltage V2 of the battery probe, if the voltage difference between the voltage V1 of the voltage line and the voltage V2 of the battery is within a preset range, the line sequence of the voltage line is correct, and if the voltage difference between the voltage V1 of the voltage line and the voltage V2 of the battery is not within the preset range, the line sequence of the voltage line is wrong.
Optionally, step T4 is further followed by:
t5, if the line sequence of the voltage line is wrong, controlling the current detection channel to output rated voltage through a calibration tool control module of the current detection channel, and controlling the non-current detection channel to output an open circuit state through a calibration tool control module of the non-current detection channel;
t6, controlling the series switches of all the channels to be closed and the bypass switches to be disconnected;
t7, detecting a voltage line voltage V1 and a battery probe voltage V2 of a next channel of the current detection channel, if the voltage difference between the voltage line voltage V1 and the battery voltage V2 is within a preset range, connecting a negative electrode of the next channel of the current detection channel to the current detection channel, and if the voltage difference between the voltage line voltage V1 and the battery probe voltage V2 is not within the preset range, executing a step T8;
and T8, executing the step T7 on the next channel of the current detection channel.
Optionally, the preset range is-0.5V- +0.5V.
Optionally, step S2 further includes:
if the type of the wire harness to be detected is a current wire, respectively carrying out positive detection and negative detection on the current wire;
the current line positive detection comprises:
a1, starting detection from a first detection channel, and sequentially detecting all detection channels backwards;
a2, controlling a series switch of the current detection channel to be closed, a bypass switch to be opened, a series switch of a non-current detection channel to be opened, and a bypass switch to be closed;
a3, controlling the current detection channel to output a high-resistance state;
and A4, performing DC-DC detection on the bypass board, wherein if signals at two ends of the bypass board are in a high-impedance state, the line sequence of the current positive electrode current line of the detection channel is correct, and if the bypass board is in a short-circuit or open-circuit state, the current positive electrode connection or negative electrode connection of the current line of the detection channel is wrong.
Optionally, the current line negative detection comprises:
b1, starting detection from a first detection channel, and sequentially detecting backwards;
b2, controlling the series switches of all the channels to be switched off and the bypass switches to be switched on;
b3, controlling the current detection channel to be in a high-resistance state, and controlling the non-current detection channel to be in a short circuit state;
and B4, the next channel of the current detection channel is disconnected, if the signal high-resistance signal detected by the DC-DC end is lost, the cathode of the current detection channel is correctly connected, and if the high-resistance state can still be detected, the current line sequence of the current detection channel is wrong.
Optionally, step B4 is further followed by:
b5, if the current line sequence of the current detection channel is wrong, controlling the open circuit of the calibration tool control module of the next channel of the current detection channel, and if the high-resistance state disappears, determining that the negative line of the calibration tool control module of the next channel of the current detection channel is connected to the current detection channel;
b6, manually correcting the negative line;
b7, controlling the series switch of the current detection channel to be switched off and the bypass switch to be switched on, controlling the internal output rated voltage of the calibration tool control module of the current detection channel, switching off all the bypass switches of the channels which are not currently detected, switching on the series switch, and switching off the internal of the calibration tool control module of the channels which are not currently detected;
and B8, performing DC-DC detection on the bypass board, recovering the negative pole line if the high-resistance state cannot be detected, and detecting the current line sequence of the channel current correctly if the high-resistance state can be detected.
Optionally, the calibration fixture control module comprises a first double-pole double-throw relay and a second double-pole double-throw relay;
the first double-pole double-throw relay is connected with the second double-pole double-throw relay, wherein the first double-pole double-throw relay is conducted with the common end of the second double-pole double-throw relay in a power-off state and is conducted with the signal source in a pull-in state, two poles of the second double-pole double-throw relay are disconnected in the power-off state, and two poles of the second double-pole double-throw relay are in short circuit through a lead in the pull-in state;
the positive electrode output end and the negative electrode output end of the first double-pole double-throw relay are used for outputting output signals of the calibration tool control module;
the first double-pole double-throw relay and the second double-pole double-throw relay are respectively connected with the controller.
A second aspect of the present invention provides a line sequence calibration apparatus for executing the line sequence calibration method of the first aspect, including a communication control module, a signal source, and a calibration tool control module;
the communication control module comprises a controller, a communication port and a power supply module;
the output end of the signal source is connected in series with a high-resistance resistor;
the communication port is used for communicating with the serial formation grading equipment;
the power supply module is used for supplying power to the controller;
the controller is used for adjusting the voltage output state of the calibration tool control module according to the control instruction, and the voltage output state of the calibration tool control module comprises a short circuit, a broken circuit and a high resistance.
Optionally, the calibration fixture control module comprises a first double-pole double-throw relay and a second double-pole double-throw relay;
the first double-pole double-throw relay is connected with the second double-pole double-throw relay, wherein the first double-pole double-throw relay is conducted with the common end of the second double-pole double-throw relay in a power-off state and is conducted with a signal source in a pull-in state, two poles of the second double-pole double-throw relay are disconnected in the power-off state, and two poles of the second double-pole double-throw relay are in short circuit through a lead in the pull-in state;
the positive output end and the negative output end of the first double-pole double-throw relay are used for outputting output signals of the calibration tool control module;
the first double-pole double-throw relay and the second double-pole double-throw relay are respectively connected with the controller.
According to the technical scheme, the line sequence calibration method provided by the invention has the following advantages:
the invention provides a line sequence calibration method, which replaces the position of a battery compartment in a series component capacitance equipment by utilizing a calibration tool control module capable of outputting three states of short-circuit, open-circuit and high-resistance voltage signals, controls the opening and closing states of a series switch and a bypass switch of the series component capacitance equipment according to the category of a wire harness to be detected, performs DC-DC detection on a bypass board through the voltage output state of the calibration tool control module, and judges whether the line sequence of the wire harness to be detected is correct or not according to the signals at the two ends of the bypass board and/or the states at the two ends of the calibration tool control module.
Meanwhile, the line sequence calibration method provided by the invention also provides a line sequence calibration method for automatically detecting the positive and negative electrodes of the voltage line and the positive and negative electrodes of the current line of the chemical component capacitance equipment, so that the line sequence calibration efficiency is further improved.
The line sequence calibration device provided by the invention is used for executing the line sequence calibration method provided by the invention, and the technical problems of low efficiency and low reliability caused by a manual line sequence calibration mode can be solved by using the line sequence calibration device provided by the invention for line sequence calibration.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a line sequence calibration method provided in the present invention;
fig. 2 is a schematic structural diagram of a calibration tool control module provided in the present invention;
FIG. 3 is a schematic structural diagram of a line sequence calibration apparatus provided in the present invention;
fig. 4 is a schematic diagram of a battery series formation loop of the series formation and capacity grading device provided in the present invention;
FIG. 5 is a schematic diagram illustrating a process for detecting the positive and negative polarities of a voltage line according to the present invention;
FIG. 6 is a schematic diagram of the current line positive detection process provided in the present invention;
fig. 7 is a schematic diagram of a current line negative electrode detection process provided in the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
For ease of understanding, referring to fig. 1, an embodiment of a line sequential calibration method is provided in the present invention, including:
It should be noted that, in the present invention, the calibration fixture control module relax, which can output three states of short-circuit, open-circuit and high-resistance voltage signals, is connected to the battery compartment of the serial component capacitance device to replace the tray with the battery cell or battery for line sequence detection. Specifically, the structure of the calibration tool control module relax capable of outputting three states of short-circuit, open-circuit and high-resistance voltage signals is shown in fig. 2, and includes a first double-pole double-throw RELAY relax 1.1 and a second double-pole double-throw RELAY relax 1.2, the first double-pole double-throw RELAY Relay1.1 is connected with the second double-pole double-throw RELAY Relay1.2, wherein the first double-pole double-throw RELAY Relay1.1 is conducted with the common terminal of the second double-pole double-throw RELAY Relay1.2 in the power-off state and is conducted with the signal source in the pull-in state, two poles of the second double-pole double-throw RELAY Relay1.2 are disconnected in a power-off state, two poles of the second double-pole double-throw RELAY Relay are in short circuit through a lead in an attraction state, the positive output end VB1+ and the negative output end VB 1-of the first double-pole double-throw RELAY Relay1.1 are used for outputting output signals of the calibration tool control module, and the contact of the positive output end VB1+ and the negative output end VB 1-with the positive battery probe 11B + and the negative battery probe 11B-is used for simulating the contact of a positive lug and a positive battery probe and the contact of a negative lug and a negative battery probe. The first double-pole double-throw relay Relay1.1 and the second double-pole double-throw relay Relay1.2 are respectively connected with the controller. The control part of the calibration tool control module relax is shown in fig. 3, the calibration tool control module relax is tri-state controlled by a controller, and a signal source provides signal voltage. The controller is used for adjusting the voltage output state of the calibration tool control module RELAY according to a control instruction, the controller can be an MCU, the controller is communicated with the series-connection component capacity device through a communication port, and the controller is powered by the power module.
It should be noted that, as shown in fig. 4, the series switch is a switch for realizing a series battery in the series component-capacitance device, as shown by S1 in fig. 4, the bypass switch is a switch for bypassing the battery in the series component-capacitance device, as shown by S2 in fig. 4, two switches S1 and S2 are interlocked, and only one of them is turned on. The wiring harness in the series component capacity equipment is divided into a voltage wire and a current wire, and the voltage wire and the current wire have different wire sequence calibration rules respectively, so that the on-off states of a series switch and a bypass switch of the series component capacity equipment can be controlled respectively according to whether the wiring harness to be detected is the voltage wire or the current wire, DC-DC detection is carried out on a bypass board through the voltage output state of the calibration tool control module, and whether the wire sequence of the wiring harness to be detected is correct is judged according to signals at two ends of the bypass board and/or states at two ends of the calibration tool control module.
Specifically, referring to fig. 5, if the type of the wire harness to be detected is a voltage line, the detection of the positive electrode and the negative electrode of the voltage line is performed according to the following method:
t1, controlling a series switch S1 of the current detection channel to be closed, and switching off a bypass switch S2;
t2, controlling the current detection channel to output at a rated voltage through a calibration tool control module of the current detection channel, disconnecting a series switch S1 of the current detection channel, closing a bypass switch S2, and controlling a non-current detection channel to output an open circuit state through a calibration tool control module of the non-current detection channel;
t3, reading voltage line voltage V1 and battery probe voltage V2 on two sides of the current detection channel;
and T4, comparing the voltage V1 of the voltage line with the voltage V2 of the battery probe, if the voltage difference between the voltage V1 of the voltage line and the voltage V2 of the battery is within a preset range, the line sequence of the voltage line is correct, and if the voltage difference between the voltage V1 of the voltage line and the voltage V2 of the battery is not within the preset range, the line sequence of the voltage line is wrong. The preset range is-0.5V- +0.5V.
For each channel, detection is performed according to T1 to T4, thereby detecting whether the channel has a voltage line-sequential connection error. And if the channels are detected to have voltage line sequence connection errors, calibrating the positive lines (or the negative lines) of the channels.
Further, when the voltage line connection error of the current detection channel is detected,
q1, controlling the current detection channel to output at a rated voltage through a calibration tool control module of the current detection channel, and controlling the non-current detection channel to output an open circuit state through a calibration tool control module of the non-current detection channel;
q2, controlling the series switches S1 of all channels to be closed, and disconnecting the bypass switch S2;
q3, detecting a voltage line voltage V1 and a battery probe voltage V2 of a next channel of the current detection channel, if the voltage difference between the voltage line voltage V1 and the battery voltage V2 is within a preset range, connecting the negative electrode of the next channel of the current detection channel to the current detection channel, and if the voltage difference between the voltage line voltage V1 and the battery probe voltage V2 is not within the preset range, executing a step Q4;
and Q4, executing the step Q3 on the next channel of the current detection channel.
And if the type of the wire harness to be detected is a current wire, respectively carrying out current wire positive electrode detection and current wire negative electrode detection.
Referring to fig. 6, the current line positive detection step includes:
a1, starting detection from a first detection channel, and sequentially detecting all detection channels backwards;
a2, controlling a series switch S1 of the current detection channel to be closed, and a bypass switch S2 to be opened, and controlling a series switch S1 of a non-current detection channel to be opened and a bypass switch S2 to be closed;
a3, controlling the current detection channel to output a high-resistance state;
and A4, performing DC-DC detection on the bypass board, wherein if signals at two ends of the bypass board are in a high-impedance state, the line sequence of the current positive electrode current line of the detection channel is correct, and if the bypass board is in a short-circuit or open-circuit state, the current positive electrode connection or negative electrode connection of the current line of the detection channel is wrong.
And repeating the steps to detect all the channels.
Furthermore, different signals can be measured to accurately position by combining the three-state free output inside the calibration tool control module and matching with switching.
Referring to fig. 7, the step of detecting the negative pole of the current line includes:
b1, starting detection from a first detection channel, and sequentially detecting backwards;
b2, controlling the series switches S1 of all the channels to be closed and the bypass switch S2 to be opened;
b3, controlling the current detection channel to be in a high-resistance state, and controlling the non-current detection channel to be in a short circuit state;
b4, the next channel of the current detection channel is disconnected, if the signal high-resistance signal detected by the DC-DC end is lost, the negative electrode of the current detection channel is correctly connected, and if the high-resistance state can still be detected, the step B5 is continuously executed;
b5, if the current line sequence of the current detection channel is wrong, controlling the open circuit of the calibration tool control module of the next channel of the current detection channel, and if the high-resistance state disappears, determining that the negative line of the calibration tool control module of the next channel of the current detection channel is connected to the current detection channel;
b6, manually correcting the negative line;
b7, controlling the series switch S1 of the current detection channel to be switched off, controlling the bypass switch S2 to be switched on, controlling the internal output rated voltage of the calibration tool control module of the current detection channel, switching off the bypass switches S2 of all non-current detection channels, switching on the series switch S1, and switching off the internal of the calibration tool control modules of all non-current detection channels;
and B8, performing DC-DC detection on the bypass board, recovering the negative pole line if the high-resistance state cannot be detected, and detecting the current line sequence of the channel current correctly if the high-resistance state can be detected.
For each channel, detection is performed according to B1 to B8.
The invention provides a line sequence calibration method, which replaces the position of a battery compartment in a series component capacitance equipment by utilizing a calibration tool control module capable of outputting short-circuit, open-circuit and high-resistance voltage signal three-state states, controls the on-off state of a series switch and a bypass switch of the series component capacitance equipment according to the category of a wire harness to be detected, performs DC-DC detection on a bypass board through the voltage output state of the calibration tool control module, judges whether the line sequence of the wire harness to be detected is correct or not according to signals at two ends of the bypass board and/or the states at two ends of the calibration tool control module, realizes the automatic identification of the correctness of the line sequence of the wire harness of each channel of the series component capacitance equipment, does not need manual line sequence calibration, and solves the technical problems of low efficiency and low reliability of the manual line sequence calibration of the series component capacitance equipment.
Meanwhile, the line sequence calibration method provided by the invention also provides a line sequence calibration method for automatically detecting the positive and negative electrodes of the voltage line and the positive and negative electrodes of the current line of the chemical composition and capacitance equipment, so that the line sequence calibration efficiency is further improved.
For easy understanding, please refer to fig. 2 and fig. 3, the present invention provides a line sequence calibration apparatus, which is configured to execute a line sequence calibration method provided in the present invention, and the line sequence calibration apparatus communicates with a control module, a signal source, and a calibration tool control module;
the communication control module comprises a controller, a communication port and a power supply module;
the output end of the signal source is connected in series with a high resistance value resistance RL;
the communication port is used for communicating with the serial formation grading equipment;
the power supply module is used for supplying power to the controller;
the controller is used for adjusting the voltage output state of the calibration tool control module according to the control instruction, and the voltage output state of the calibration tool control module comprises a short circuit, a short circuit and a high resistance.
The calibration tool control module comprises a first double-pole double-throw relay Relay1.1 and a second double-pole double-throw relay Relay1.2;
the first double-pole double-throw relay Relay1.1 is connected with the second double-pole double-throw relay, wherein the first double-pole double-throw relay Relay1.1 is conducted with the common terminal of the second double-pole double-throw relay Relay1.2 in a power-off state and is conducted with a signal source in an actuation state, the second double-pole double-throw relay Relay1.2 is disconnected in two poles in the power-off state, and the two poles are in short circuit through a lead in the actuation state;
the positive electrode output end VB + and the negative electrode output end VB-of the first double-pole double-throw relay Relay1.1 are used for outputting output signals of the calibration tool control module;
the first double-pole double-throw relay Relay1.1 and the second double-pole double-throw relay Relay1.2 are respectively connected with the controller.
The controller is an MCU chip.
When the line sequence calibration device provided by the invention is used for line sequence calibration, the calibration tool control module is connected to the position of the battery bin of each channel in the serial component capacitance equipment to replace a battery, and the line sequence calibration is carried out. The three-state free switching of the calibration tool control module is realized by combining two double-pole double-throw relays.
The line sequence calibration device is used for line sequence calibration, and can avoid the technical problems of low efficiency and low reliability caused by a mode of manually calibrating the line sequence of the serial capacity-sharing equipment.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A line sequence calibration method is characterized by comprising the following steps:
s1, a calibration tool control module capable of outputting short-circuit, open-circuit and high-resistance voltage signal tristates is connected to the position of a battery bin of each detection channel in series-connection capacity grading equipment, wherein the calibration tool control module is provided with signal voltage by a signal source and is controlled to switch the tristates by a controller;
and S2, controlling the opening and closing states of a serial switch and a bypass switch of the serial component capacitance equipment and the voltage output state of a calibration tool control module according to the category of the wire harness to be detected, carrying out DC-DC detection on a bypass board, and judging whether the line sequence of the wire harness to be detected is correct according to signals at two ends of the bypass board and/or the states at two ends of the calibration tool control module, wherein the serial switch is a switch of a serial battery passage, and the bypass switch is a switch for bypassing the battery passage.
2. The line sequence calibration method according to claim 1, wherein the step S2 comprises:
if the wire harness type to be detected is a voltage wire, executing the following steps:
t1, controlling a series switch of the current detection channel to be closed and a bypass switch to be opened;
t2, controlling the current detection channel to output at a rated voltage through a calibration tool control module of the current detection channel, disconnecting a series switch of the current detection channel and closing a bypass switch;
t3, reading voltage line voltage V1 and battery probe voltage V2 on two sides of the current detection channel;
and T4, comparing the voltage V1 of the voltage line with the voltage V2 of the battery probe, if the voltage difference between the voltage V1 of the voltage line and the voltage V2 of the battery is within a preset range, the line sequence of the voltage line is correct, and if the voltage difference between the voltage V1 of the voltage line and the voltage V2 of the battery is not within the preset range, the line sequence of the voltage line is wrong.
3. The line sequence calibration method according to claim 2, further comprising, after step T4:
t5, if the line sequence of the voltage line is wrong, controlling the current detection channel to output rated voltage through a calibration tool control module of the current detection channel, and controlling the non-current detection channel to output an open circuit state through a calibration tool control module of the non-current detection channel;
t6, controlling the series switches of all the channels to be closed and the bypass switches to be opened;
t7, detecting a voltage line voltage V1 and a battery probe voltage V2 of a next channel of the current detection channel, if the voltage difference between the voltage line voltage V1 and the battery voltage V2 is within a preset range, connecting a negative electrode of the next channel of the current detection channel to the current detection channel, and if the voltage difference between the voltage line voltage V1 and the battery probe voltage V2 is not within the preset range, executing a step T8;
and T8, executing the step T7 on the next channel of the current detection channel.
4. The line order calibration method according to claim 2 or 3, wherein the preset range is-0.5V- +0.5V.
5. The line sequence calibration method according to claim 3, wherein the step S2 further comprises:
if the type of the wire harness to be detected is a current wire, respectively carrying out positive detection and negative detection on the current wire;
the current line positive detection comprises:
a1, starting detection from a first detection channel, and sequentially detecting all detection channels backwards;
a2, controlling a series switch of the current detection channel to be closed, a bypass switch to be opened, a series switch of a non-current detection channel to be opened, and a bypass switch to be closed;
a3, controlling the current detection channel to output a high-resistance state;
and A4, performing DC-DC detection on the bypass board, wherein if signals at two ends of the bypass board are in a high-impedance state, the line sequence of the current positive electrode current line of the detection channel is correct, and if the bypass board is in a short-circuit or open-circuit state, the current positive electrode connection or negative electrode connection of the current line of the detection channel is wrong.
6. The line-sequential calibration method of claim 5, wherein the current line negative detection comprises:
b1, starting detection from a first detection channel, and sequentially detecting backwards;
b2, controlling the series switches of all the channels to be switched off and the bypass switches to be switched on;
b3, controlling the current detection channel to be in a high-resistance state, and controlling the non-current detection channel to be in a short circuit state;
and B4, the next channel of the current detection channel is disconnected, if the signal high-resistance signal detected by the DC-DC end is lost, the cathode of the current detection channel is correctly connected, and if the high-resistance state can still be detected, the current line sequence of the current detection channel is wrong.
7. The line sequence calibration method according to claim 6, further comprising, after step B4:
b5, if the current line sequence of the current detection channel is wrong, controlling the open circuit of the calibration tool control module of the next channel of the current detection channel, and if the high-resistance state disappears, determining that the negative line of the calibration tool control module of the next channel of the current detection channel is connected to the current detection channel;
b6, manually correcting the negative line;
b7, controlling the series switch of the current detection channel to be switched off and the bypass switch to be switched on, controlling the internal output rated voltage of the calibration tool control module of the current detection channel, switching off the bypass switches of all non-current detection channels, switching on the series switch, and switching off the internal output rated voltage of the calibration tool control module of all non-current detection channels;
b8, performing DC-DC detection on the bypass board, if the high-resistance state cannot be detected, restoring the negative pole line, and if the high-resistance state can be detected, detecting the current line sequence of the channel current correctly.
8. The line sequence calibration method according to claim 1, wherein the calibration tool control module comprises a first double-pole double-throw relay and a second double-pole double-throw relay;
the first double-pole double-throw relay is connected with the second double-pole double-throw relay, wherein the first double-pole double-throw relay is conducted with the common end of the second double-pole double-throw relay in a power-off state and is conducted with a signal source in a pull-in state, two poles of the second double-pole double-throw relay are disconnected in the power-off state, and two poles of the second double-pole double-throw relay are in short circuit through a lead in the pull-in state;
the positive output end and the negative output end of the first double-pole double-throw relay are used for outputting output signals of the calibration tool control module;
the first double-pole double-throw relay and the second double-pole double-throw relay are respectively connected with the controller.
9. A line sequence calibration device for executing the line sequence calibration method according to any one of claims 1 to 7, comprising a communication control module, a signal source and a calibration tool control module;
the communication control module comprises a controller, a communication port and a power supply module;
the output end of the signal source is connected in series with a high-resistance resistor;
the communication port is used for communicating with the serial formation grading equipment;
the power supply module is used for supplying power to the controller;
the controller is used for adjusting the voltage output state of the calibration tool control module according to the control instruction, and the voltage output state of the calibration tool control module comprises a short circuit, an open circuit and a high resistance.
10. The line sequence calibration device of claim 9, wherein the calibration fixture control module comprises a first double-pole double-throw relay and a second double-pole double-throw relay;
the first double-pole double-throw relay is connected with the second double-pole double-throw relay, wherein the first double-pole double-throw relay is conducted with the common end of the second double-pole double-throw relay in a power-off state and is conducted with the signal source in a pull-in state, two poles of the second double-pole double-throw relay are disconnected in the power-off state, and two poles of the second double-pole double-throw relay are in short circuit through a lead in the pull-in state;
the positive output end and the negative output end of the first double-pole double-throw relay are used for outputting output signals of the calibration tool control module;
the first double-pole double-throw relay and the second double-pole double-throw relay are respectively connected with the controller.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116559758A (en) * | 2023-07-10 | 2023-08-08 | 深圳和润达科技有限公司 | Parameter correction system and method for chemical composition equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116559758A (en) * | 2023-07-10 | 2023-08-08 | 深圳和润达科技有限公司 | Parameter correction system and method for chemical composition equipment |
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