CN111426963A - Electric quantity sampling and measuring system of battery welding machine and testing method thereof - Google Patents
Electric quantity sampling and measuring system of battery welding machine and testing method thereof Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/374—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- 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 relates to the embedded technical field, and discloses an electric quantity sampling and measuring system of a battery welder and a testing method thereof, which solve the technical problem that the measurement of the remaining value of the electric quantity is inaccurate at present and comprise the following steps of electrically connecting in sequence: the sampling input end is used for being connected with the positive electrode and the negative electrode of a battery pack of the battery welding machine and receiving a voltage signal of the battery welding machine; the internal correction circuit is configured to be a single chip microcomputer, the single chip microcomputer receives the digital signals of the A/D conversion module, and the digital signals sampled for multiple times are corrected and used for converting accurate residual electric quantity of the battery pack. According to the technical scheme, a detection scheme for automatically correcting and detecting the electric quantity of the battery welder according to the change of the current working state can be formed.
Description
Technical Field
The invention relates to the technical field of embedded development and design, in particular to an electric quantity sampling system of a battery welding machine and a testing method thereof.
Background
The battery welding machine is an electric welding machine which is provided with a storage battery, a battery pack is arranged in the battery welding machine and used for supplying power when the welding machine performs welding operation, and the residual capacity of the battery pack can be known through measurement.
In the prior art, the remaining power of the battery pack is detected based on the output voltage of the current battery, the power of the electric equipment is constant under most conditions, and the voltage drop is basically kept unchanged, so that the voltages fed back by the battery to the outside at the same power are consistent, and the current battery power can be directly converted through the voltages.
However, in actual operation, since the battery welder is a high power output device, the output power of the welding current may vary from several tens of watts to several thousands of watts. Meanwhile, due to the internal resistance of the battery pack battery core and the resistance existing in the connection line from the battery core to the battery pack, the output voltage of the battery pack can generate voltage drop due to the loss of the internal resistance of the battery pack, and the voltage drop amplitude is increased along with the increase of the output power, so that when people directly convert the current battery electric quantity through the voltage, the obtained current electric quantity residual value is inaccurate.
Disclosure of Invention
Aiming at the technical problem that the current electric quantity conversion result of the battery welding machine provided by the background technology is inaccurate, the invention aims to design an electric quantity detection scheme of the battery welding machine, which can automatically correct according to the change of the current working state. The first purpose of the present invention is to provide an electric quantity sampling and measuring system of a battery welder, which improves sampling precision through a sampling circuit and performs operation analysis processing on sampled data by matching with an internal correction circuit, so as to solve the problem that the electric quantity is difficult to measure due to a large change in output power of a battery pack.
The second purpose of the invention is to provide a method for testing the electric quantity of the battery welder, through the testing method, a design idea of an internal correction circuit is provided, and the testing method is realized through a single chip microcomputer program.
In order to achieve the first object, the invention provides the following technical scheme:
the utility model provides an electric quantity sampling measurement system of battery welding machine, includes electric connection in proper order: the circuit comprises a sampling input end, a voltage reduction circuit, a filter circuit, a voltage stabilizing circuit, a linear amplification circuit, an A/D conversion circuit and an internal correction circuit;
the sampling input end is used for being connected with the positive electrode and the negative electrode of a battery pack of the battery welding machine and receiving a voltage signal of the battery welding machine; the internal correction circuit is configured to be a single chip microcomputer, the single chip microcomputer receives the digital signals of the A/D conversion module, and corrects the digital signals sampled for multiple times for converting accurate residual electric quantity of the battery pack;
the sampling input end comprises a two-core needle seat V _ JC;
the voltage reduction circuit comprises a first resistor R1, a first potentiometer VR1 and a second resistor R2;
the filter circuit comprises a capacitor C1;
the voltage stabilizing circuit comprises a voltage regulator tube Z1;
the linear amplification circuit comprises a first chip U1A, a second chip U2, a third chip U3A, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a fourth capacitor C4 and a fifth capacitor C5;
the A/D conversion circuit comprises an A/D conversion chip;
the anode of the battery pack is connected with the sampling circuit through a pin V _ JC1, the cathode of the battery pack is connected with a section of a resistor R1 through a pin V _ JC2, the other end of the resistor R1 is connected with the pins 2 and 3 of a potentiometer VR1 and one end of a resistor R2, one end of a capacitor C1 is connected with the cathode of a voltage regulator tube Z1, one pin of the potentiometer R1 is connected with the pin II of the two-core pin V _ JC, the other end of a resistor R2, the other end of a capacitor C1 and one end of a capacitor II C2 are connected and connected with analog ground signals, the other end of a capacitor II C2 is connected with one end of a resistor III R3, one end of a capacitor III C3 and the pin 3 of a chip U1, the other end of a resistor III R3 is connected with the anode of the voltage regulator tube Z1, the other end of the capacitor III C3527 is connected with analog ground signals, and the pins I, I5 and I4 and I1 of the chip are connected with analog ground signals, pin 8 is connected with a 24V power supply, pin 6 is connected with pin 7, pin 2 is connected with one end of a resistor four R4, one end of a capacitor four C4 and pin 4 of a chip two U2, the other end of the resistor four R4 is connected with an analog ground signal, the other end of the capacitor four C4 is connected with one end of a resistor five R5 and pin 1 of a chip one U1, the other end of the resistor five R5 is connected with pin 2 of a chip two U2, pin 1 of a chip two U2 is connected with an analog ground signal, pin 3 is connected with a 24V signal, pin 7 and pin 8 are floating, pin 6 is connected with a VCC signal, pin 5 is connected with one end of a resistor six R6, one end of a capacitor five C5 and pin 3 of a chip three U3, pin 4 of a chip three U3, the other end of a capacitor five C5 and the other end of a resistor six R6 are connected with a digital ground signal, pin 8 of a chip three U3 is connected with a seven C7 and a seven VCC signal is connected with each other end of the chip three U3, the other end of the capacitor seven C7 is connected with a digital ground signal, a pin No. 1 of a chip three U3 and one end of a resistor seven R7 are connected with a cathode of a voltage regulator tube two Z2, an anode of the voltage regulator tube two Z2 and one end of a capacitor six C6 are connected with the digital ground signal, the other end of the resistor seven R7 and the other end of the capacitor six C6 are connected with a pin No. 10 of the single chip U4, and the signal collected by the pin No. 10 is processed by an internal program of the single chip U4 about electric quantity sampling to obtain the current electric quantity of the battery.
Through the technical scheme, the sampling input end samples voltage signals in the battery pack of the battery welding machine for multiple times, the voltage signals after multiple sampling are respectively subjected to voltage reduction through the voltage reduction circuit, filtering is performed through the filter circuit, the voltage stabilizing circuit plays a role in stabilizing the voltage value within a certain range, the voltage signals are subjected to non-distortion amplification processing through the linear amplification circuit, and then correction processing is performed through the internal correction circuit. Therefore, after the voltage signals after multiple sampling are corrected by the measuring system, accurate voltage signal values are finally formed, and the accurate residual electric quantity of the battery pack can be converted.
The invention is further configured such that the one-chip U1 is a L M358 operational amplifier.
The invention is further configured to: and the second chip U2 is an HCNR200 linear optical coupler.
The invention is further arranged that the chip three U3 is L M358 operational amplifier.
The invention is further configured to: the singlechip U4 is STM32F042K6T6 type singlechip.
In order to achieve the second object, the present invention provides a solution,
the electric quantity testing method of the battery welding machine is applied to an internal correction circuit of the electric quantity sampling and measuring system of the battery welding machine, and is characterized by comprising the following steps of:
s1, acquiring an external signal;
s2, sampling for multiple times to obtain an average sampling value AD _ CONV;
s3, endowing the average sampling value AD _ CONV of this time with power _ AD _ data;
s4, before that, assigning the last average sampling value power _ ad _ data to power _ ad _ data1, wherein the power _ ad _ data is the average sampling value of this time, and the power _ ad _ data1 is the average sampling value of the last time;
s5, comparing the average value power _ ad _ data of this time with the last average sampling value power _ ad _ data 1. If the change exceeds a set threshold value T1, recording the current mutation value to calculate an electric quantity sampling compensation value power _ ad _ come, and if the change does not exceed the set threshold value, recording the current battery electric quantity as an electric quantity value corresponding to power _ ad _ data;
and S6, when the sampling compensation value power _ ad _ come is recorded, operating the sampling compensation value power _ ad _ come and the current average sampling value power _ ad _ data to obtain a result and judge the current electric quantity value.
By the technical scheme, based on the hardware test system, the correction processing method of S1, S2, S3, S4, S5 and S6 is utilized, the correction processing method is applied to an internal correction circuit of the hardware test system, the internal correction circuit is configured to be an STM32F042K6T6 type single chip microcomputer, and a program method capable of achieving the functions of the steps S1, S2, S3, S4, S5 and S6 is burnt in the single chip microcomputer, so that the function of internal correction can be achieved, and the purpose of converting the residual electric quantity of the battery pack into accurate residual electric quantity can be achieved.
The invention is further configured to: the times of multiple sampling are 5-10 times.
In conclusion, the invention has the following beneficial effects:
(1) under the condition that the output power is greatly changed, the residual electric quantity of the battery pack can be measured, and more accurate residual electric quantity information of the battery pack of the battery welding machine can be obtained;
(2) under the condition that the sampling precision in the sampling circuit needs to be adjusted, a voltage reduction circuit, a filter circuit, a voltage stabilizing circuit, a linear amplification circuit and an A/D conversion circuit can be flexibly replaced, the voltage reduction circuit can use a chip for voltage reduction, a transformer for voltage reduction and the like, the voltage stabilizing circuit can use other voltage stabilizing forms except a voltage stabilizing tube, and internal components of the linear amplification circuit can also be adjusted;
(3) and under the condition that the detection precision of the residual electric quantity needs to be improved or reduced, changing the parameters of the internal program of the single chip microcomputer.
Drawings
FIG. 1 is a schematic flow chart of the calibration procedure of the internal calibration circuit;
FIG. 2 is an overall circuit schematic of the measurement system;
FIG. 3 is a schematic diagram of a sampling circuit composed of a sampling input terminal, a voltage reduction circuit, a filter circuit, and a voltage regulator circuit;
fig. 4 is a schematic diagram of a linear amplification circuit.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
Example 1
The electric quantity sampling and measuring system of the battery welder can be known by combining the figure 2, the figure 3 and the figure 4, and mainly comprises a sampling circuit module and an internal correction circuit module, wherein the sampling circuit module is used for collecting voltage values in a battery pack of the battery welder and carrying out various signal processing on the collected voltage values. Specifically, the sampling circuit module comprises a sampling input end, a voltage reduction circuit, a filter circuit, a voltage stabilizing circuit, a linear amplification circuit, an A/D conversion circuit and an internal correction circuit which are electrically connected in sequence. The sampling input end is used for being connected with the positive electrode and the negative electrode of a battery pack of the battery welding machine, receiving voltage signals of the battery welding machine, achieving the functions of voltage reduction, filtering, voltage stabilization, linear amplification and the like, and the signals processed by the sampling circuit module are transmitted to the internal correction module which processes the acquired signals. Referring to fig. 1, the specific processing method is as follows:
(1) and sampling for multiple times to obtain an average sampling value AD _ CONV.
(2) The average sampling value AD _ CONV of this time is given to power _ AD _ data, and the average sampling value power _ AD _ data of the last time is given to power _ AD _ data1 before this time, wherein the power _ AD _ data is the average sampling value of this time, and the power _ AD _ data1 is the average sampling value of the last time.
(3) The average value power _ ad _ data of this time is compared with the last average sampling value power _ ad _ data 1. If the change exceeds a set threshold value T1, recording the current mutation value to calculate the power sampling compensation value power _ ad _ come, and if the change does not exceed the set threshold value, recording the current battery power as the power value corresponding to the power _ ad _ data.
(4) And when the sampling compensation value power _ ad _ come is recorded, operating the sampling compensation value power _ ad _ come and the current average sampling value power _ ad _ data to obtain a result and judge the current electric quantity value. So that the accurate residual electric quantity value of the battery pack can be converted.
In this embodiment, as can be seen from fig. 2, 3 and 4, the acquisition circuit module uses a two-core pin seat V _ JC as a sampling end, and uses a voltage dividing circuit composed of a resistor one R1, a potentiometer one VR1 and a resistor two R2 to reduce the voltage of the battery pack to a required voltage, a capacitor one C1 further filters the signal, and the obtained signal passes through a voltage regulator tube one Z1 to reduce the fixed voltage, so that the amplitude range of the signal is changed to 0V to 3.3V. A signal on a pin of a first chip U13 is converted into a digital signal side from an analog signal side through a linear amplification circuit consisting of a first chip U1, a second chip U2, a third chip U3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a fourth capacitor C4 and a fifth capacitor C5, and finally the signal enters a pin 10 of a singlechip U4 through a seven-R7 to be read.
The connection mode of all components in the specific acquisition circuit module is as follows: the anode of the battery pack is connected with the sampling circuit through a pin V _ JC1, the cathode of the battery pack is connected with a section of a resistor R1 through a pin V _ JC2, the other end of the resistor R1 is connected with the pins 2 and 3 of a potentiometer VR1 and one end of a resistor R2, one end of a capacitor C1 is connected with the cathode of a voltage regulator tube Z1, one pin of the potentiometer R1 is connected with the pin II of the two-core pin V _ JC, the other end of a resistor R2, the other end of a capacitor C1 and one end of a capacitor II C2 are connected and connected with analog ground signals, the other end of a capacitor II C2 is connected with one end of a resistor III R3, one end of a capacitor III C3 and the pin 3 of a chip U1, the other end of a resistor III R3 is connected with the anode of the voltage regulator tube Z1, the other end of the capacitor III C3527 is connected with analog ground signals, and the pins I, I5 and I4 and I1 of the chip are connected with analog ground signals, pin 8 is connected with a 24V power supply, pin 6 is connected with pin 7, pin 2 is connected with one end of a resistor four R4, one end of a capacitor four C4 and pin 4 of a chip two U2, the other end of the resistor four R4 is connected with an analog ground signal, the other end of the capacitor four C4 is connected with one end of a resistor five R5 and pin 1 of a chip one U1, the other end of the resistor five R5 is connected with pin 2 of a chip two U2, pin 1 of a chip two U2 is connected with an analog ground signal, pin 3 is connected with a 24V signal, pin 7 and pin 8 are floating, pin 6 is connected with a VCC signal, pin 5 is connected with one end of a resistor six R6, one end of a capacitor five C5 and pin 3 of a chip three U3, pin 4 of a chip three U3, the other end of a capacitor five C5 and the other end of a resistor six R6 are connected with a digital ground signal, pin 8 of a chip three U3 is connected with a seven C7 and a seven VCC signal is connected with each other end of the chip three U3, the other end of the capacitor seven C7 is connected with a digital ground signal, a pin No. 1 of a chip three U3 and one end of a resistor seven R7 are connected with a cathode of a voltage regulator tube two Z2, an anode of the voltage regulator tube two Z2 and one end of a capacitor six C6 are connected with the digital ground signal, the other end of the resistor seven R7 and the other end of the capacitor six C6 are connected with a pin No. 10 of the single chip U4, and the signal collected by the pin No. 10 is processed by an internal program of the single chip U4 about electric quantity sampling to obtain the current electric quantity of the battery.
The first chip U1 is configured as a L M358 operational amplifier, the second chip U2 is configured as an HCNR200 linear optocoupler, and the third chip U3 is configured as a L M358 operational amplifier.
The internal correction module is configured to be a single chip microcomputer U4, the single chip microcomputer U4 is configured to be an STM32F042K6T6 type single chip microcomputer, the processing method of the internal correction module is achieved through burning programs in the STM32F042K6T6 type single chip microcomputer, and signals transmitted by the acquisition circuit are processed.
Example 2
An electric quantity testing method of a battery welder is applied to an internal correction circuit of an electric quantity sampling and measuring system of the battery welder, and can be known by referring to fig. 1, and comprises the following steps:
s1, acquiring an external signal;
s2, sampling for multiple times to obtain an average sampling value AD _ CONV;
s3, endowing the average sampling value AD _ CONV of this time with power _ AD _ data;
s4, before that, assigning the last average sampling value power _ ad _ data to power _ ad _ data1, wherein the power _ ad _ data is the average sampling value of this time, and the power _ ad _ data1 is the average sampling value of the last time;
s5, comparing the average value power _ ad _ data of this time with the last average sampling value power _ ad _ data 1. If the change exceeds a set threshold value T1, recording the current mutation value to calculate an electric quantity sampling compensation value power _ ad _ come, and if the change does not exceed the set threshold value, recording the current battery electric quantity as an electric quantity value corresponding to power _ ad _ data;
and S6, when the sampling compensation value power _ ad _ come is recorded, operating the sampling compensation value power _ ad _ come and the current average sampling value power _ ad _ data to obtain a result and judge the current electric quantity value.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The utility model provides an electric quantity sampling measurement system of battery welding machine, includes electric connection in proper order: a sampling input end, a voltage reduction circuit, a filter circuit, a voltage stabilizing circuit, a linear amplification circuit, an A/D conversion circuit and an internal correction circuit,
the sampling input end is used for being connected with the positive electrode and the negative electrode of a battery pack of the battery welding machine and receiving a voltage signal of the battery welding machine;
the internal correction circuit is configured to be a single chip microcomputer, the single chip microcomputer receives the digital signals of the A/D conversion module, and corrects the digital signals sampled for multiple times so as to convert accurate residual electric quantity of the battery pack;
wherein, the sampling input end comprises a two-core needle seat V _ JC;
the voltage reduction circuit comprises a first resistor R1, a first potentiometer VR1 and a second resistor R2;
the filter circuit comprises a capacitor C1;
the voltage stabilizing circuit comprises a voltage regulator tube Z1;
the linear amplification circuit comprises a first chip U1A, a second chip U2, a third chip U3A, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a fourth capacitor C4 and a fifth capacitor C5;
the A/D conversion circuit comprises an A/D conversion chip;
the anode of the battery pack is connected with the sampling circuit through a pin V _ JC1, the cathode of the battery pack is connected with a section of a resistor R1 through a pin V _ JC2, the other end of the resistor R1 is connected with the pins 2 and 3 of a potentiometer VR1 and one end of a resistor R2, one end of a capacitor C1 is connected with the cathode of a voltage regulator tube Z1, one pin of the potentiometer R1 is connected with the pin II of the two-core pin V _ JC, the other end of a resistor R2, the other end of a capacitor C1 and one end of a capacitor II C2 are connected and connected with analog ground signals, the other end of a capacitor II C2 is connected with one end of a resistor III R3, one end of a capacitor III C3 and the pin 3 of a chip U1, the other end of a resistor III R3 is connected with the anode of the voltage regulator tube Z1, the other end of the capacitor III C3527 is connected with analog ground signals, and the pins I, I5 and I4 and I1 of the chip are connected with analog ground signals, pin 8 is connected with a 24V power supply, pin 6 is connected with pin 7, pin 2 is connected with one end of a resistor four R4, one end of a capacitor four C4 and pin 4 of a chip two U2, the other end of the resistor four R4 is connected with an analog ground signal, the other end of the capacitor four C4 is connected with one end of a resistor five R5 and pin 1 of a chip one U1, the other end of the resistor five R5 is connected with pin 2 of a chip two U2, pin 1 of a chip two U2 is connected with an analog ground signal, pin 3 is connected with a 24V signal, pin 7 and pin 8 are floating, pin 6 is connected with a VCC signal, pin 5 is connected with one end of a resistor six R6, one end of a capacitor five C5 and pin 3 of a chip three U3, pin 4 of a chip three U3, the other end of a capacitor five C5 and the other end of a resistor six R6 are connected with a digital ground signal, pin 8 of a chip three U3 is connected with a seven C7 and a seven VCC signal is connected with each other end of the chip three U3, the other end of the capacitor seven C7 is connected with a digital ground signal, a pin No. 1 of a chip three U3 and one end of a resistor seven R7 are connected with a cathode of a voltage regulator tube two Z2, an anode of the voltage regulator tube two Z2 and one end of a capacitor six C6 are connected with the digital ground signal, the other end of the resistor seven R7 and the other end of the capacitor six C6 are connected with a pin No. 10 of the single chip U4, and the signal collected by the pin No. 10 is processed by an internal program of the single chip U4 about electric quantity sampling to obtain the current electric quantity of the battery.
2. The system of claim 1, wherein the first chip U1 is a L M358 operational amplifier.
3. The electric quantity sampling and measuring system of the battery welder as claimed in claim 1, wherein the second chip U2 is an HCNR200 linear optocoupler.
4. The system of claim 1, wherein the on-chip tri-U3 is a L M358 operational amplifier.
5. The electric quantity sampling and measuring system of the battery welding machine as claimed in claim 1, wherein the single chip microcomputer U4 is an STM32F042K6T6 type single chip microcomputer.
6. The electric quantity testing method of the battery welding machine is applied to an internal correction circuit of the electric quantity sampling and measuring system of the battery welding machine, and is characterized by comprising the following steps of:
s1, acquiring an external signal;
s2, sampling for multiple times to obtain an average sampling value AD _ CONV;
s3, endowing the average sampling value AD _ CONV of this time with power _ AD _ data;
s4, before that, assigning the last average sampling value power _ ad _ data to power _ ad _ data1, wherein the power _ ad _ data is the average sampling value of this time, and the power _ ad _ data1 is the average sampling value of the last time;
s5, comparing the average value power _ ad _ data of this time with the last average sampling value power _ ad _ data 1. If the change exceeds a set threshold value T1, recording the current mutation value to calculate an electric quantity sampling compensation value power _ ad _ come, and if the change does not exceed the set threshold value, recording the current battery electric quantity as an electric quantity value corresponding to power _ ad _ data;
and S6, when the sampling compensation value power _ ad _ come is recorded, operating the sampling compensation value power _ ad _ come and the current average sampling value power _ ad _ data to obtain a result and judge the current electric quantity value.
7. The method for testing electric quantity of the battery welder as claimed in claim 6, wherein the number of the multiple sampling is 5-10.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114594381A (en) * | 2022-03-04 | 2022-06-07 | 宁波星巡智能科技有限公司 | Real-time intelligent detection method and device for remaining battery capacity, electronic equipment and medium |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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