CN112884281A - Control method and control system for offline grinding of cathode roller - Google Patents

Abstract

The application discloses a control method and a control system for offline grinding of a cathode roller; belongs to the technical field of the production of electrolytic copper foil of lithium batteries of new energy automobiles; the technical key points are as follows: the method comprises the following steps: the system comprises a data collection system, a corrosion degree evaluation system, a display system and an alarm system; the data collection system, comprising: a cathode roller rotation time recorder, a current density sensor; the corrosion degree evaluation system is used for calculating the accumulated corrosion degree; the alarm system has the following functions: when the cathode roller needs to be ground in the off-line grinding process, the alarm system sends out an alarm signal; the output end of the data collection system is connected with the input end of the corrosion degree evaluation system; and the output end of the corrosion degree evaluation system is respectively connected with the output ends of the display system and the alarm system. The application aims to provide a control method and a control system for offline grinding of a cathode roller, which can improve the control of the cathode roller under the production condition under the complex condition.

Description

Control method and control system for offline grinding of cathode roller

Technical Field

The application relates to the technical field of production of electrolytic copper foil of lithium batteries of new energy vehicles, in particular to a control method and a control system for offline grinding of a cathode roller.

Background

Cathode roll grinding is a common maintenance measure; the grinding timing of the cathode roll is, for example, as shown in prior art document 1 (https:// wenku. baidu. com/view/91419849e518964bcf847 cadpfc cf ═ 2): section 3.4.5, specify: the cathode roll grinding period was 30. + -.5.

However, the above-mentioned grinding cycle is a pure empirical method, and for only continuously producing one kind of copper foil, for example, always producing a 6 μm copper foil, the above-mentioned grinding cycle based on the pure empirical method is a method which is commonly used in practice. However, for: for the production of a plurality of copper foils in a continuous production, the grinding cycle based on the pure empirical method is not so suitable because of the variation of the intermediate production conditions.

Furthermore, even if a copper foil is continuously produced, the pure empirical method is sometimes not so suitable.

The actual situation at the site is: the grinding period is too short, which can seriously affect the production efficiency and cause frequent shutdown; the shutdown itself can also have an effect on the service life of the cathode roll. The grinding period is too long, which also seriously affects the production efficiency: the end of the cycle results in a large amount of defective copper foil.

Therefore, it is an urgent need to develop an offline grinding management system for cathode rolls.

Disclosure of Invention

The present application is directed to provide a method and a system for controlling offline grinding of a cathode roll, which overcome the above-mentioned disadvantages of the prior art.

The technical scheme of the application is as follows: a cathode roll off-line lapping control system, comprising: the system comprises a data collection system, a corrosion degree evaluation system, a display system and an alarm system;

the data collection system, comprising: a cathode roller rotation time recorder, a current density sensor; wherein, the cathode roller rotation time recorder is used for recording the rotation time of the cathode roller; wherein the current density sensor is used for monitoring the current density between the cathode roller and the anode groove;

the corrosion degree evaluation system is used for calculating the accumulated corrosion degree;

the display system is used for displaying: the cathode roller continuously works according to an accumulated corrosion St curve at any time t and the accumulated corrosion at the current time after the last grinding;

the alarm system has the following functions: when the cathode roller needs to be ground in the off-line grinding process, the alarm system sends out an alarm signal;

the output end of the data collection system is connected with the input end of the corrosion degree evaluation system;

and the output end of the corrosion degree evaluation system is respectively connected with the output ends of the display system and the alarm system.

Further, still include: a cathode roller rotation angle sensor and a diatomite use time recorder; the cathode roller rotation angle sensor is used for monitoring the rotation angle of the cathode roller and judging whether the rotation of the cathode roller is abnormal or not; wherein the diatomite use time recorder is used for recording the use time of the diatomite.

Further, the corrosion degree evaluation system includes: the device comprises a storage module and a calculation module; the output end of the cathode roller rotation angle sensor, the cathode roller rotation time recorder and the current density sensor of the data collection system and the output end of the diatomite use time recorder are connected with the input end of the storage module; the storage module is bidirectionally connected with the computing module; the output end of the storage module is respectively connected with the output ends of the display system and the alarm system.

Further, the corrosion degree evaluation system calculates the corrosion degree by adopting the following method:

wherein S is_t0Indicates that the cathode roll starts to work continuously t since the last grinding₀Cumulative corrosion over time;

I_tshowing the corrosion intensity of the cathode roller which starts to continuously work at any time t since the last grinding is finished;

I₀indicating the corrosion strength of the cathode roller in a standard state;

G_trepresenting a current density influence coefficient;

T_tthe influence coefficient of the diatomite use time is shown.

Further, the corrosion degree evaluation system calculates the corrosion degree by adopting the following method:

wherein, Δ t_iDenotes the ith time segment, S, of the n time segments_t0The accumulated corrosion degree of the cathode roller after the last grinding operation is started and continuously operated at any time t is shown;

I₀indicating the corrosion strength of the cathode roller in a standard state;

G_irepresenting a current density influence coefficient;

T_irepresenting the influence coefficient of the using time of the diatomite;

when S is_t0And when the grinding speed is more than or equal to 1, the alarm system gives an alarm, namely the cathode roller needs to be ground.

Further, in the present invention,

further, said G_t/G_iExpressed by the following formula:

j represents current density in units of: a/m²

Or

J represents current density in units of: a/m²

Further, the Tt/Ti is expressed by the following formula:

tq herein represents the time (in s) during which the diatomaceous earth is used immediately after the cathode roll starts to operate, and t represents the time (in s) during which the cathode roll has started to operate continuously since the last polishing.

A cathode roll off-line grinding control method is characterized in that a cathode roll rotation angle sensor, a current density sensor, a cathode roll rotation time recorder and a diatomite use time recorder are respectively arranged on a foil forming machine, and are arranged in a controller of the foil forming machine;

the method comprises the following steps:

s1, collecting data set [ phi, J, t ] by the cathode roller rotation angle sensor, the current density sensor, the cathode roller rotation time recorder and the diatomite use time recorder_{Cathode roll}、t_DiatomiteTransmitting the corrosion rate data to a storage module of a corrosion rate evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: { phi, J, t_{Cathode roll}、t_Diatomite}; then calculate the current t₀St at time₀(ii) a Meanwhile, returning the result obtained by calculation to the storage module for storage;

s2-1, calculating G: according to different t_{Cathode roll}G is calculated from the current density J detected by the current density sensor at the moment_{t cathode roller}Can findt_{Cathode roll}At 0 to t₀G at each time_{t cathode roller}：

S2-2, calculating T_{t cathode roller}: signal t transmitted according to diatomite using time recorder_DiatomiteTo calculate T at different times T:

s2-3, calculating parameters according to the following formula: s_t0

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and generates the t-St curve and the latest S in real time_t0A value;

s4, the alarm system reads the data of the storage module, if the latest S_t0If the value is larger than 1.0, the alarm system sends an alarm instruction; if the latest S_t0If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder returns to 0.

A cathode roll off-line grinding control method is characterized in that a current density sensor is arranged on a foil forming machine, and a cathode roll rotation time recorder is arranged in a controller of the foil forming machine;

the method comprises the following steps:

s1, inputting the using time tq of the diatomite when the cathode roller starts to work in the storage module;

transmitting the data J, t acquired by the current density sensor and the cathode roller rotation time recorder to a storage module of the corrosion degree evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: tq, J, t; then calculate the current t₀St at time₀(ii) a Meanwhile, returning the result obtained by calculation to the storage module for storage;

s2-1, calculating Gt: gt is calculated from the current density J detected by the current density sensor, and t can be obtained from 0 to t₀Gt at each time:

s2-2, calculating T_tFrom the following equation, t can be found from 0 to t₀Gt at each time:

s2-3, calculating parameters according to the following formula: st, S_t0

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and generates the t-St curve and the latest S in real time_t0A value;

s4, the alarm system reads the data of the storage module, if the latest S_t0If the value is larger than 1.0, the alarm system sends an alarm instruction; if the latest S_t0If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder returns to 0.

A cathode roll off-line grinding control method is characterized in that a cathode roll rotation angle sensor and a current density sensor are installed on a foil forming machine, and a cathode roll rotation time recorder and a diatomite use time recorder are arranged in a controller of the foil forming machine;

the cathode roller rotation angle sensor records the rotation angle of the cathode roller, and when the rotation angle phi is 2n pi, the controller gives an instruction: the current density sensor collects data, the cathode roller rotation time recorder collects data, and the diatomite use time recorder collects data;

the method comprises the following steps:

s1, collecting data by current density sensor, cathode roller rotation time recorder and diatomite use time recorder (J)₁，J₂……J_k)，(t₁，t₂，……t_k)，(t_{Diatomaceous earth 1}，t_{Diatomaceous earth 2}，……t_{Diatomaceous earth k}) Transmitting the data to a storage module of a corrosion degree evaluation system; t is t_kNamely the accumulated time of the continuous use of the cathode roller since the last grinding;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: (J)₁，J₂……J_k)，(t₁，t₂，……t_k)，(t_{Diatomaceous earth 1}，t_{Diatomaceous earth 2}，……t_{Diatomaceous earth k})；

Then calculate the current t₀St at time₀(ii) a Meanwhile, returning the result obtained by calculation to the storage module for storage;

s2-1, calculating each time section Δ t:

wherein any ith time interval Δ t_iCalculated using the formula:

s2-2, calculating G at each time interval delta t:

wherein any ith time interval Δ t_iG below_iCalculated using the formula:

s2-3, calculating T under each time segment delta T;

any ith time interval Δ t_iT of_iCalculated using the formula:

s2-3, calculating parameters according to the following formula: s_tk

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and displays S_tkA value;

s4, the alarm system reads the data of the storage module, if S_tkIf the value is larger than 1.0, the alarm system sends an alarm instruction; if S_tkIf the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder returns to 0.

A cathode roll off-line grinding control method is characterized in that a flow density sensor is installed on a foil forming machine, and a cathode roll rotation time recorder and a diatomite use time recorder are arranged in a controller of the foil forming machine;

which comprises the following steps:

data acquisition for the first time:

s1, collecting data J by current density sensor, cathode roller rotation time recorder and diatomite use time recorder₁，t₁，t_{Diatomaceous earth 1}Transmitting the data to a storage module of a corrosion degree evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: j. the design is a square₁，t₁，t_{Diatomaceous earth 1}；

Then calculate the current t₁St at time₁(ii) a Meanwhile, returning the result obtained by calculation to the storage module for storage;

s2-1, calculating a time period delta t₁：

Δt₁＝t₁

S2-2, calculating G₁Calculated using the following formula:

s2-3, calculating T₁Calculated using the following formula:

s2-3, calculating parameters according to the following formula: s_t1

S_t1＝I₀G₁ T₁Δt₁

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module 2-1 and displays S_t1Value, display (t)₁，S_t1) A curve;

s4, the alarm system reads the data of the storage module 2-1, if S_t1If the value is larger than 1.0, the alarm system sends an alarm instruction; if S_t1If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, the cumulative using time t of the diatomite_DiatomiteRecalculating to 0;

and (3) collecting data for the second time:

s1, collecting data J by current density sensor, cathode roller rotation time recorder and diatomite use time recorder₂，t₂，t_{Diatomaceous earth 2}Transmitting the data to a storage module of a corrosion degree evaluation system;

s2 calculation of Corrosion rating SystemThe module calls data in the storage module: j. the design is a square₂，t₂，t_{Diatomaceous earth 2}；

And the calculation module of the corrosion degree evaluation system calls the last calculation in the storage module: g₁,T₁,St₁；

Then calculate the current t₂St at time₂(ii) a At the same time, the result St obtained by calculation₂Returning to the storage module for storage;

s2-1, calculating the 2 nd time period delta t₂：

Δt₂＝t₂-t₁

S2-2, calculating G₂：

S2-3, calculating T₂；

S2-3, calculating parameters according to the following formula: s_t2

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and displays S_t2Value, display (t)₁，S_t1),(t₂，S_t2) A curve;

s4, the alarm system reads the data of the storage module, if S_t2If the value is larger than 1.0, the alarm system sends an alarm instruction; if S_t2If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, the cumulative using time t of the diatomite_DiatomiteRecalculating to 0;

……

data collected for the X time:

s1, collecting data J by current density sensor, cathode roller rotation time recorder and diatomite use time recorder_x，t_x，t_{Diatomaceous earth x}Transmitting the data to a storage module of a corrosion degree evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: j. the design is a square_x，t_x，t_{Diatomaceous earth x}(ii) a And the calculation module of the corrosion degree evaluation system calls the last calculation in the storage module: g_x-1,T_x-1,St_x-1(ii) a And then calculate the current t_xSt at time_x(ii) a At the same time, the result St obtained by calculation_xReturning to the storage module for storage;

s2-1, calculating the x time section delta t_x：

Δt_x＝t_x-t_x-1

S2-2, calculating G_x：

S2-3, calculating T_x；

S2-3, calculating parameters according to the following formula: s_tx

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and displays S_t2Value, display (t)₁，S_t1),(t₂，S_t2)……(t_x，S_tx) Curves formed by the data;

s4, the alarm system reads the data of the storage module, if S_txIf the value is larger than 1.0, the alarm system sends an alarm instruction; if S_txIf the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, the cumulative using time t of the diatomite_DiatomiteRecalculated back to 0.

The beneficial effect of this application lies in:

first, the present application is directed to a grinding control system under a continuous working condition of a cathode roll under a normal working condition, and is particularly suitable for a grinding control system under a continuous working condition of a cathode roll under a complex production condition. For "accidental factors (for example, the cathode roller stops rotating for more than 3 hours due to power failure, and the roller surface is damaged due to short circuit)", it is necessary to immediately perform grinding.

Second, through extensive data research, the team of inventors found that: the current density and the diatomite are the largest influence factors when the cathode roller works normally.

For the cathode roll, the impurity concentration (mainly organic matter) of the electrolyte is a core factor affecting the oxidation speed of the cathode roll (the temperature, acidity, etc. of the electrolyte also affect, but the above factors have very little influence in the normal working range and are far less than the influence of the impurity concentration).

However, if the monitoring is performed by directly using the relevant sensor, the monitoring is very difficult because of the large number of types of impurities. In another way, the inventor group realizes that: in normal operation, the amount of organic impurities in the raw material is mainly related to the service life of the diatomite (which is arranged in the filtration of the electrolyte inlet pipeline and used for filtering impurities).

Thirdly, a large number of examples prove that the scheme of the application can be applied to determination of offline grinding time of the cathode roller in different copper foil production histories; is particularly suitable for 6-12 micron double-light copper foil (I is given in the application)₀Is very suitable for the production conditions of the 6-12 micron double-light copper foil).

Drawings

The present application will be described in further detail with reference to the following examples, which are not intended to limit the scope of the present application.

Fig. 1 is a system configuration diagram of a cathode roll off-line polishing control system according to example 1.

The reference numerals are explained below:

the system comprises a data collection system 1, a corrosion degree evaluation system 2, a corrosion degree display system 3 and an alarm system 4;

a cathode roller rotation angle sensor 1-1, a cathode roller rotation time recorder 1-2, a current density sensor 1-3 and a diatomite use time recorder 1-4; the storage module 2-1 and the calculation module 2-2.

Detailed Description

Embodiment 1, a cathode roll off-line grinding control system, comprising: the system comprises a data collection system 1, a corrosion degree evaluation system 2, a corrosion degree display system 3 and an alarm system 4;

the data collection system 1 includes: a cathode roll rotation angle sensor 1-1, a cathode roll rotation time recorder 1-2, a current density sensor 1-3, a diatomaceous earth use time recorder 1-4 (the cathode roll rotation angle sensor 1-1, the diatomaceous earth use time recorder 1-4 are non-essential technical features for the following method three, and are essential technical features for the method four);

the cathode roller rotation angle sensor is used for monitoring the rotation angle of the cathode roller (and meanwhile, whether the rotation of the cathode roller is abnormal or not can be judged);

wherein, the cathode roller rotation time recorder is used for recording the rotation time of the cathode roller;

wherein the current density sensor is used for monitoring the current density between the cathode roller and the anode groove;

wherein the diatomite use time recorder 1-4 is used for recording the use time of the diatomite;

the corrosion degree evaluation system is used for calculating the accumulated corrosion degree;

the display system is used for displaying the accumulated corrosion St curve of the cathode roller continuously working for any time t after the last grinding at any time tLine, current t₀Cumulative degree of corrosion S over time_t0；

And the alarm system 4 is used for reminding a technician to carry out off-line grinding on the cathode roller.

The output end of a cathode roller rotation angle sensor 1-1, a cathode roller rotation time recorder 1-2 and a current density sensor 1-3 of the data collection system and the output end of a diatomite use time recorder 1-4 are connected with the input end of the corrosion degree evaluation system;

the corrosion degree evaluation system 2 calculates the corrosion degree by the following method:

wherein S is_t0Indicates that the cathode roll starts to work continuously t since the last grinding₀Cumulative corrosion over time;

I_tindicating the corrosion intensity of the cathode roll at any time t after the last grinding operation (t is [0, t)₀])；

I₀Shows the corrosion intensity of the cathode roller under the standard state (namely the current density is 5000A/m)²The corrosivity intensity at time 0 for diatomaceous earth);

gt represents a cathode roller current density influence coefficient;

tt represents the influence coefficient of the diatomite use time.

Or of the formula

Δt_iDenotes the ith time segment, S, of the n time segments_tThe accumulated corrosion degree of the cathode roller after the last grinding operation is started and continuously operated at any time t is shown;

I₀shows the corrosion intensity of the cathode roller under the standard state (namely the current density is 5000A/m)²The diatomite is used at the time of 0Corrosion strength) of the steel, according to the research of the inventor group,

gi represents a current density influence coefficient;

ti represents the influence coefficient of the diatomite use time (i-th time period is t-th time period)_m-1To t_mTime of day).

Wherein, G is_t/G_iExpressed by the following formula:

the T is_t/T_iExpressed by the following formula:

tq herein represents the time(s) during which the diatomaceous earth is used immediately after the cathode roll starts to operate, and t represents the time(s) during which the cathode roll has started to operate continuously since the last polishing was completed.

When s is_tWhen the number is 1 or more, it means that the cathode roll needs to be ground.

The first control method comprises the following steps:

the sensors have at most: a control method for offline grinding of a cathode roller is characterized in that a cathode roller rotation angle sensor 1-1 is installed on the top surface of the cathode roller, a current density sensor 1-3 is installed on the surface of an anode tank or a current sensor (current/effective sectional area is equal to current density) is installed on an electric wire connected with the anode tank, and a cathode roller rotation time recorder 1-2 and a diatomite use time recorder 1-4 are built in a controller;

s1, collecting data (phi, J, t) by the cathode roller rotation angle sensor 1-1, the current density sensor 1-3, the cathode roller rotation time recorder 1-2 and the diatomite use time recorder 1-4_{Cathode roll}、t_DiatomiteThat (four data are at the same time; therefore, a stack of data sets is available) is passed on to the degree of corrosion2-1 in a storage module of the evaluation system 2;

s2, the calculation module 2-2 of the corrosion degree evaluation system 2 calls the data in the storage module 2-1: phi, J, t_{Cathode roll}、t_Diatomite(ii) a Then calculate the current t₀St at time₀(ii) a Meanwhile, the result obtained by calculation is returned to the storage module 2-1 for storage;

s2-1, calculating G: according to different t_{Cathode roll}The current density J detected by the current density sensor at the moment is used for calculating Gt_{Cathode roll}Can find t_{Cathode roll}At 0 to t₀Gt at each time_{Cathode roll}：

S2-2, calculating T_{t cathode roller}: signal t transmitted according to diatomite using time recorder_DiatomiteTo calculate T at different times T:

s2-3, calculating parameters according to the following formula: s_t0

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module 2-1, and generates the t-St curve and the latest S in real time_t0A value;

s4, the alarm system reads the data of the storage module 2-1, if the latest S_t0If the value is larger than 1.0, the alarm system sends an alarm instruction; if the latest S_t0If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder 1-2 returns to 0.

The second control method comprises the following steps:

the sensors are at least: a cathode roll off-line grinding control method, install the current density sensor 1-3 on the surface of the anode trough or install the current sensor on the electric wire that the anode trough connects (the current/effective sectional area is the current density), the cathode roll rotates the time recorder 1-2 to embed in controller;

s1, inputting the using time tq of the diatomite when the cathode roller starts to work in the storage module;

the current density sensor 1-3, the cathode roller rotation time recorder 1-2 and the collected data { J, t } (2 data are at the same time; therefore, a pile of data set can be obtained) are transmitted to a storage module 2-1 of the corrosion degree evaluation system 2;

s2, the calculation module 2-2 of the corrosion degree evaluation system 2 calls the data in the storage module 2-1: tq, J, t; then calculate the current t₀St at time₀(ii) a Meanwhile, the result obtained by calculation is returned to the storage module 2-1 for storage;

s2-1, calculating Gt: gt is calculated from the current density J detected by the current density sensor, and t can be obtained from 0 to t₀Gt at each time:

s2-2, calculating Tt, and obtaining t from 0 to t according to the following formula₀Tt at each time:

s2-3, calculating parameters according to the following formula: st, S_t0

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module 2-1, and generates the t-St curve and the latest S in real time_t0A value;

s4, the alarm system reads the data of the storage module 2-1, if the latest S_t0If the value is larger than 1.0, the alarm system sends an alarm instruction; if the latest S_t0If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder 1-2 returns to 0.

The third control method comprises the following steps:

a control method for offline grinding of a cathode roller is characterized in that a cathode roller rotation angle sensor 1-1 is installed on the surface of the cathode roller, a current density sensor 1-3 is installed on the surface of an anode tank or a current sensor (current/effective sectional area is equal to current density) is installed on an electric wire connected with the anode tank, and a cathode roller rotation time recorder 1-2 and a diatomite use time recorder 1-4 are built in a controller;

the method comprises the following steps: the cathode roller rotation angle sensor 1-1 records the rotation angle of the cathode roller, and when the rotation angle phi is 2n pi (i.e., the cathode roller rotates 1 revolution), the controller gives an instruction: the current density sensor 1-3 collects data, the cathode roller rotation time recorder 1-2 and the diatomite use time recorder 1-4 collect data;

s1, collecting data by current density sensor 1-3, cathode roller rotation time recorder 1-2 and diatomite use time recorder 1-4 (J)₁，J₂……J_k)，(t₁，t₂，……t_k)，(t_{Diatomaceous earth 1}，t_{Diatomaceous earth 2}，……t_{Diatomaceous earth k}) Transmitting the data to a storage module 2-1 of a corrosion degree evaluation system 2; t is t_kNamely the accumulated time of the continuous use of the cathode roller since the last grinding;

s2, the calculation module 2-2 of the corrosion degree evaluation system 2 calls the data in the storage module 2-1: (J)₁，J₂……J_k)，(t₁，t₂，……t_k)，(t_{Diatomaceous earth 1}，t_{Diatomaceous earth 2}，……t_{Diatomaceous earth k})；

Then calculate the current t₀St at time₀(ii) a Meanwhile, the result obtained by calculation is returned to the storage module 2-1 for storage;

s2-1, calculating each time section Δ t:

wherein any ith time interval Δ t_iCalculated using the formula:

s2-2, calculating G at each time interval delta t:

wherein any ith time interval Δ t_iG below_iCalculated using the formula:

s2-3, calculating T under each time segment delta T;

any ith time interval Δ t_iT of_iCalculated using the formula:

s2-3, calculating parameters according to the following formula: s_tk

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module 2-1 and displays S_tkA value;

s4, the alarm system reads the data of the storage module 2-1, if S_tkIf the value is larger than 1.0, the alarm system sends an alarm instruction; if S_tkIf the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder 1-2 returns to 0.

The fourth control method comprises the following steps: incremental method

A control method for offline grinding of a cathode roller is characterized in that a cathode roller rotation angle sensor 1-1 is installed on the surface of the cathode roller, a current density sensor 1-3 is installed on the surface of an anode tank or a current sensor (current/effective sectional area is equal to current density) is installed on an electric wire connected with the anode tank, and a cathode roller rotation time recorder 1-2 and a diatomite use time recorder 1-4 are built in a controller;

data acquisition for the first time:

s1, collecting data J by the current density sensor 1-3, the cathode roller rotation time recorder 1-2 and the diatomite use time recorder 1-4₁，t₁，t_{Diatomaceous earth 1}Transmitting the data to a storage module 2-1 of a corrosion degree evaluation system 2;

s2, the calculation module 2-2 of the corrosion degree evaluation system 2 calls the data in the storage module 2-1: j. the design is a square₁，t₁，t_{Diatomaceous earth 1}(ii) a Then calculate the current t₁St at time₁(ii) a Meanwhile, the result obtained by calculation is returned to the storage module 2-1 for storage;

s2-1, calculating a time period delta t₁：

Δt₁＝t₁

S2-2, calculating G₁Calculated using the following formula:

s2-3, calculating T₁Calculated using the following formula:

s2-3, calculating parameters according to the following formula: s_t1

S_t1＝I₀G₁ T₁Δt₁

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module 2-1 and displays S_t1Value, display (t)₁，S_t1) Curve (first time point);

s4, the alarm system reads the data of the storage module 2-1, if S_t1If the value is larger than 1.0, the alarm system sends an alarm instruction; if S_t1If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, t_DiatomiteRe-calculation to 0 (data before Return to 0 does not affect (i.e. cathode roll during continuous operation, diatomaceous earth is replaced: time of use t after diatomaceous earth replacement)_DiatomiteNaturally, returning to 0 for calculation again; and the previous one represents the time of use of the old diatomaceous earth, which is still the time that has been recorded)).

And (3) collecting data for the second time:

s1, collecting data J by the current density sensor 1-3, the cathode roller rotation time recorder 1-2 and the diatomite use time recorder 1-4₂，t₂，t_{Diatomaceous earth 2}Transmitting the data to a storage module 2-1 of a corrosion degree evaluation system 2;

s2, the calculation module 2-2 of the corrosion degree evaluation system 2 calls the data in the storage module 2-1: j. the design is a square₂，t₂，t_{Diatomaceous earth 2}；

The calculation module 2-2 of the corrosion degree evaluation system 2 calls the last calculation in the storage module 2-1: g₁,T₁,St₁；

Then calculate the current t₂St at time₂(ii) a At the same time, the result St obtained by calculation₂Returning to the storage module 2-1 for storage;

s2-1, calculating the 2 nd time period delta t₂：

Δt₂＝t₂-t₁

S2-2, calculating G₂：

S2-3, calculating T₂；

S2-3, calculating parameters according to the following formula: s_t2

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module 2-1 and displays S_t2Value, display (t)₁，S_t1),(t₂，S_t2) A curve;

s4, the alarm system reads the data of the storage module 2-1, if S_t2If the value is larger than 1.0, the alarm system sends an alarm instruction; if S_t2If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, t_DiatomiteRe-calculation to 0 (data before Return to 0 does not affect (i.e. cathode roll during continuous operation, diatomaceous earth is replaced: time of use t after diatomaceous earth replacement)_DiatomiteNaturally, returning to 0 for calculation again; and the previous one represents the time of use of the old diatomaceous earth, which is still the time that has been recorded)).

……

Data collected for the X time:

s1, collecting data J by the current density sensor 1-3, the cathode roller rotation time recorder 1-2 and the diatomite use time recorder 1-4_x，t_x，t_{Diatomaceous earth x}Transmitting the data to a storage module 2-1 of a corrosion degree evaluation system 2;

S2,the calculation module 2-2 of the corrosion degree evaluation system 2 calls data in the storage module 2-1: j. the design is a square_x，t_x，t_{Diatomaceous earth x}(ii) a The calculation module 2-2 of the corrosion degree evaluation system 2 calls the last calculation in the storage module 2-1: g_x-1,T_x-1,St_x-1(ii) a And then calculate the current t_xSt at time_x(ii) a At the same time, the result St obtained by calculation_xReturning to the storage module 2-1 for storage;

s2-1, calculating the x time section delta t_x：

Δt_x＝t_x-t_x-1

S2-2, calculating G_x：

S2-3, calculating T_x；

S2-3, calculating parameters according to the following formula: s_tx

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module 2-1 and displays S_t2Value, display (t)₁，S_t1),(t₂，S_t2)……(t_x，S_tx) A curve;

s4, the alarm system reads the data of the storage module 2-1, if S_txIf the value is larger than 1.0, the alarm system sends an alarm instruction; if S_txIf the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, t_DiatomiteReturn-to-0 recalculation (number before return-to-0)According to the condition that the use time t after the replacement of the diatomite is not influenced (i.e. the cathode roller is changed during the continuous work_DiatomiteNaturally, returning to 0 for calculation again; and the previous one represents the time of use of the old diatomaceous earth, which is still the time that has been recorded)).

The method of the application has advantages and disadvantages of four methods

Test verification:

comparison table

The team research of the inventor finds that: the method of the present application applies to: when the 6-12 micron double-light copper foil is produced, the calculation result is not much different from the manual method, so that the method can be used for guiding the cathode roller off-line copper foil, namely, the automatic alarm of the cathode roller off-line copper foil time is realized.

The above-mentioned embodiments are merely preferred embodiments of the present application, which are not intended to limit the present application in any way, and it will be understood by those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the present application.

Claims (9)

1. A cathode roll off-line lapping control system, comprising: the system comprises a data collection system, a corrosion degree evaluation system, a display system and an alarm system;

the data collection system, comprising: a cathode roller rotation time recorder, a current density sensor; wherein, the cathode roller rotation time recorder is used for recording the rotation time of the cathode roller; wherein the current density sensor is used for monitoring the current density between the cathode roller and the anode groove;

the corrosion degree evaluation system is used for calculating the accumulated corrosion degree;

the display system is used for displaying: the cathode roller continuously works according to an accumulated corrosion St curve at any time t and the accumulated corrosion at the current time after the last grinding;

the alarm system has the following functions: when the cathode roller needs to be ground in the off-line grinding process, the alarm system sends out an alarm signal;

the output end of the data collection system is connected with the input end of the corrosion degree evaluation system;

and the output end of the corrosion degree evaluation system is respectively connected with the output ends of the display system and the alarm system.

2. The cathode roll off-line grinding control system according to claim 1, further comprising: a cathode roller rotation angle sensor and a diatomite use time recorder; the cathode roller rotation angle sensor is used for monitoring the rotation angle of the cathode roller and judging whether the rotation of the cathode roller is abnormal or not; wherein the diatomite use time recorder is used for recording the use time of the diatomite.

3. The cathode roll off-line grinding control system according to claim 1, wherein the corrosion degree evaluation system comprises: the device comprises a storage module and a calculation module; the output end of the cathode roller rotation angle sensor, the cathode roller rotation time recorder and the current density sensor of the data collection system and the output end of the diatomite use time recorder are connected with the input end of the storage module; the storage module is bidirectionally connected with the computing module; the output end of the storage module is respectively connected with the output ends of the display system and the alarm system.

4. The system of claim 1, wherein the corrosion evaluation system calculates the corrosion by:

wherein S is_t0Indicates that the cathode roll starts to work continuously t since the last grinding₀Cumulative corrosion over time;

I_tshowing the corrosion intensity of the cathode roller which starts to continuously work at any time t since the last grinding is finished;

I₀indicating the corrosion strength of the cathode roller in a standard state;

G_trepresenting a current density influence coefficient;

T_trepresenting the influence coefficient of the using time of the diatomite;

or, the corrosion degree evaluation system calculates the corrosion degree by adopting the following method:

wherein, Δ t_iDenotes the ith time segment, S, of the n time segments_t0Shows that the cathode roller starts to work continuously for any time t since the last grinding₀The accumulated corrosion degree of the lower layer;

I₀indicating the corrosion strength of the cathode roller in a standard state;

G_irepresenting a current density influence coefficient;

T_irepresenting the influence coefficient of the using time of the diatomite;

when S is_t0And when the grinding speed is more than or equal to 1, the alarm system gives an alarm, namely the cathode roller needs to be ground.

5. The cathode roller off-line grinding of claim 4A mill control system, characterized in that,

the G is_t/G_iExpressed by the following formula:

j represents current density in units of: a/m²；

The T is_t/T_i(as if there were no Tn) is expressed by:

wherein tq represents the time of using the diatomaceous earth when the cathode roll starts to operate, and the unit is as follows: s, t represents the time of the cathode roll starting to continuously operate since the last grinding, and the unit is as follows: and s.

6. A cathode roll off-line grinding control method is characterized in that a cathode roll rotation angle sensor and a current density sensor are respectively arranged on a foil forming machine, and a cathode roll rotation time recorder and a diatomite use time recorder are arranged in a controller of the foil forming machine;

the method comprises the following steps:

s1, collecting data set [ phi, J, t ] by the cathode roller rotation angle sensor, the current density sensor, the cathode roller rotation time recorder and the diatomite use time recorder_{Cathode roll}、t_DiatomiteTransmitting the corrosion rate data to a storage module of a corrosion rate evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: { phi, J, t_{Cathode roll}、t_Diatomite}; then calculate the current t₀St at time₀(ii) a Meanwhile, returning the result obtained by calculation to the storage module for storage;

s2-1, meterCalculating G: according to different t_{Cathode roll}G is calculated from the current density J detected by the current density sensor at the moment_{t cathode roller}Can find t_{Cathode roll}At 0 to t₀G at each time_{t cathode roller}：

S2-2, calculating T_{t cathode roller}: signal t transmitted according to diatomite using time recorder_DiatomiteTo calculate T at different times T:

s2-3, calculating parameters according to the following formula: s_t0

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and generates the t-St curve and the latest S in real time_t0A value;

s4, the alarm system reads the data of the storage module, if the latest S_t0If the value is larger than 1.0, the alarm system sends an alarm instruction; if the latest S_t0If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder returns to 0.

7. A cathode roller off-line grinding control method is characterized in that a current density sensor is arranged on a raw foil machine, and a cathode roller rotation time recorder is arranged in a controller of the raw foil machine;

the method comprises the following steps:

s1, inputting the using time tq of the diatomite when the cathode roller starts to work in the storage module;

transmitting the data J, t acquired by the current density sensor and the cathode roller rotation time recorder to a storage module of the corrosion degree evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: tq, J, t; then calculate the current t₀St at time₀(ii) a Meanwhile, returning the result obtained by calculation to the storage module for storage;

s2-1, calculating Gt: gt is calculated from the current density J detected by the current density sensor, and t can be obtained from 0 to t₀Gt at each time:

s2-2, calculating T_t：

S2-3, calculating parameters according to the following formula: st, S_t0

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and generates the t-St curve and the latest S in real time_t0A value;

s4, the alarm system reads the data of the storage module, if the latest S_t0If the value is larger than 1.0, the alarm system sends an alarm instruction; if the latest S_t0If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder returns to 0.

8. A cathode roll off-line grinding control method is characterized in that a cathode roll rotation angle sensor and a current density sensor are installed on a foil forming machine, and a cathode roll rotation time recorder and a diatomite use time recorder are arranged in a controller of the foil forming machine;

the cathode roller rotation angle sensor records the rotation angle of the cathode roller, and when the rotation angle phi is 2n pi, the controller gives an instruction: the current density sensor collects data, the cathode roller rotation time recorder collects data, and the diatomite use time recorder collects data;

the method comprises the following steps:

s1, collecting data by current density sensor, cathode roller rotation time recorder and diatomite use time recorder (J)₁，J₂……J_k)，(t₁，t₂，……t_k)，(t_{Diatomaceous earth 1}，t_{Diatomaceous earth 2}，……t_{Diatomaceous earth k}) Transmitting the data to a storage module of a corrosion degree evaluation system; t is t_kNamely the accumulated time of the continuous use of the cathode roller since the last grinding;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: (J)₁，J₂……J_k)，(t₁，t₂，……t_k)，(t_{Diatomaceous earth 1}，t_{Diatomaceous earth 2}，……t_{Diatomaceous earth k})；

Then calculate the current t₀St at time₀(ii) a Meanwhile, returning the result obtained by calculation to the storage module for storage;

s2-1, calculating each time section Δ t:

wherein any ith time interval Δ t_iCalculated using the formula:

s2-2, calculating G at each time interval delta t:

wherein any ith time interval Δ t_iG below_iCalculated using the formula:

s2-3, calculating T under each time segment delta T;

any ith time interval Δ t_iT of_iCalculated using the formula:

s2-3, calculating parameters according to the following formula: s_tk

Wherein, I₀Comprises the following steps: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and displays S_tkA value;

s4, the alarm system reads the data of the storage module, if S_tkIf the value is larger than 1.0, the alarm system sends an alarm instruction; if S_tkIf the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

and S5, when the cathode roller is put into the anode tank again after being ground and settled, the cathode roller rotation time recorder returns to 0.

9. A cathode roller off-line grinding control method is characterized in that a flow density sensor is arranged on a raw foil machine, and a cathode roller rotation time recorder and a diatomite use time recorder are arranged in a controller of the raw foil machine;

which comprises the following steps:

data acquisition for the first time:

s1, Current Density sensorThe cathode roller rotation time recorder and the diatomite use time recorder collect data J₁，t₁，t_{Diatomaceous earth 1}Transmitting the data to a storage module of a corrosion degree evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: j. the design is a square₁，t₁，t_{Diatomaceous earth 1}；

Then calculate the current t₁St at time₁(ii) a Meanwhile, returning the result obtained by calculation to the storage module for storage;

s2-1, calculating a time period delta t₁：

Δt₁＝t₁

S2-2, calculating G₁Calculated using the following formula:

s2-3, calculating T₁Calculated using the following formula:

s2-3, calculating parameters according to the following formula: s_t1

S_t1＝I₀G₁T₁Δt₁

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and displays S_t1Value, display (t)₁，S_t1) A curve;

s4, the alarm system reads the data of the storage module, if S_t1If the value is larger than 1.0, the alarm system sends an alarm instruction; if S_t1If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, the cumulative using time t of the diatomite_DiatomiteRecalculating to 0;

and (3) collecting data for the second time:

s1, collecting data J by current density sensor, cathode roller rotation time recorder and diatomite use time recorder₂，t₂，t_{Diatomaceous earth 2}Transmitting the data to a storage module of a corrosion degree evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: j. the design is a square₂，t₂，t_{Diatomaceous earth 2}；

And the calculation module of the corrosion degree evaluation system calls the last calculation in the storage module: g₁,T₁,St₁；

Then calculate the current t₂St at time₂(ii) a At the same time, the result St obtained by calculation₂Returning to the storage module for storage;

s2-1, calculating the 2 nd time period delta t₂：

Δt₂＝t₂-t₁

S2-2, calculating G₂：

S2-3, calculating T₂；

S2-3, calculating parameters according to the following formula: s_t2

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and displays S_t2Value, display (t)₁，S_t1),(t₂，S_t2) A curve;

s4, the alarm system reads the data of the storage module, if S_t2If the value is larger than 1.0, the alarm system sends an alarm instruction; if S_t2If the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, the cumulative using time t of the diatomite_DiatomiteRecalculating to 0;

……

data collected for the X time:

s1, collecting data J by current density sensor, cathode roller rotation time recorder and diatomite use time recorder_x，t_x，t_{Diatomaceous earth x}Transmitting the data to a storage module of a corrosion degree evaluation system;

s2, the calculation module of the corrosion degree evaluation system calls the data in the storage module: j. the design is a square_x，t_x，t_{Diatomaceous earth x}(ii) a And the calculation module of the corrosion degree evaluation system calls the last calculation in the storage module: g_x-1,T_x-1,St_x-1(ii) a And then calculate the current t_xSt at time_x(ii) a At the same time, the result St obtained by calculation_xReturning to the storage module for storage;

s2-1, calculating the x time section delta t_x：

Δt_x＝t_x-t_x-1

S2-2, calculating G_x：

S2-3, calculating T_x；

S2-3, calculating parameters according to the following formula: s_tx

Wherein, I₀For the relevant parameters, the sizes are: 7.4^-1×10^-6；

S3, the display system reads the data of the storage module and displays S_t2Value, display (t)₁，S_t1),(t₂，S_t2)……(t_x，S_tx) Curves formed by the data;

s4, the alarm system reads the data of the storage module, if S_txIf the value is larger than 1.0, the alarm system sends an alarm instruction; if S_txIf the alarm signal is not greater than 1.0, the alarm system does not send an alarm instruction;

s5, if the diatomite is replaced by new one, the cumulative using time t of the diatomite_DiatomiteRecalculated back to 0.

Images