CN113433986A

CN113433986A - Temperature control method, oven, electronic device and readable storage medium

Info

Publication number: CN113433986A
Application number: CN202110733484.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Guangdong Lyric Robot Intelligent Automation Co Ltd
Current assignee: Guangdong Lyric Robot Automation Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-09-24
Anticipated expiration: 2041-06-30
Also published as: CN113433986B

Abstract

The application provides a temperature control method, an oven, an electronic device and a readable storage medium. The temperature control method comprises the following steps: acquiring the actual temperature of the coating surface of the battery pole piece, and comparing the actual temperature value of the coating surface of the pole piece with the preset calibration temperature of the coating surface of the battery pole piece to obtain a first temperature difference value; obtaining the calibration temperature of the static pressure cavity according to the first temperature difference value and a preset first conversion rule; acquiring the actual temperature of the static pressure cavity, and comparing the actual temperature of the static pressure cavity with the calibration temperature of the static pressure cavity to obtain a second temperature difference value; and adjusting the heating flow of the heater to enable the temperature adjustment increment of the static pressure cavity to be equal to the second temperature difference value so as to adjust the actual temperature of the upper air cavity to be equal to the calibration temperature of the upper air cavity. Through the technical scheme of this application, can adjust the stoving temperature on battery pole piece surface in real time to improve the homogeneity that the pole piece is heated at the stoving in-process, improve the yields of battery pole piece preparation.

Description

Temperature control method, oven, electronic device and readable storage medium

Technical Field

The application relates to the technical field of battery pole piece manufacturing, in particular to a temperature control method, an oven, electronic equipment and a readable storage medium.

Background

In the related technology, in the drying device of the battery pole piece, because the real-time heat loss monitoring cannot be carried out when the pole piece is dried, the pole piece is unevenly heated due to the uneven heat transfer in the drying process, and the defects of cracking, pole piece curling or excessive local drying and the like can occur in the drying process.

Disclosure of Invention

The embodiment of the application aims to provide a temperature control method, which can adjust the drying temperature of the surface of a battery pole piece in real time, improve the uniformity of the pole piece heated in the drying process, and effectively avoid the occurrence of defects such as cracking, pole piece curling or excessive local drying.

The embodiment of the first aspect of the application provides a temperature control method, which is used for an oven for coating a battery pole piece, wherein the oven comprises an upper air cavity, a lower air cavity, a static pressure cavity and a heater connected with the static pressure cavity, the static pressure cavity is communicated with the upper air cavity through a first valve and communicated with the lower air cavity through a second valve, a channel for conveying the battery pole piece is arranged between the upper air cavity and the lower air cavity, and the temperature control method comprises the following steps:

the method comprises the steps of obtaining the actual temperature of a coating surface of a battery pole piece, and comparing the actual temperature value of the coating surface of the pole piece with the preset calibration temperature of the coating surface of the battery pole piece to obtain a first temperature difference value.

Specifically, the actual temperature of the coating surface of the battery pole piece can be acquired in real time through a temperature detection device such as a temperature sensor arranged on the coating surface of the battery pole piece, and then the actual temperature of the coating surface of the battery pole piece is compared with the calibration temperature of the coating surface of the battery pole piece to obtain a first temperature difference value between the actual temperature of the coating surface of the battery pole piece and the preset calibration temperature.

And obtaining the calibration temperature of the static pressure cavity according to the first temperature difference value and a preset first conversion rule.

Specifically, when a first temperature difference value of the coating surface of the battery pole piece is obtained, a temperature difference signal corresponding to the first temperature difference value can be transmitted to the control system, a corresponding relation between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage corresponds to 1 degree, the control system transmits the voltage signal corresponding to the first temperature difference value to the static pressure cavity, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset conversion rule, for example, 5 degrees corresponds to 0.5V, and the sum of the temperature value and the actual temperature of the static pressure cavity is the calibration temperature of the static pressure cavity.

And acquiring the actual temperature of the static pressure cavity, and comparing the actual temperature of the static pressure cavity with the calibration temperature of the static pressure cavity to obtain a second temperature difference value.

Specifically, a temperature sensor and other temperature detection devices can be arranged in the static pressure cavity, and the actual temperature in the static pressure cavity is compared with the obtained calibration temperature to obtain a second temperature difference value between the actual temperature of the static pressure cavity and the calibration temperature.

And adjusting the heating flow of the heater to enable the temperature adjustment increment of the static pressure cavity to be equal to the second temperature difference value, so that the actual temperature of the upper air cavity is adjusted to be equal to the calibration temperature of the upper air cavity.

Because the heater is connected with the static pressure cavity, and the static pressure cavity is communicated with the upper air cavity, the temperature in the static pressure cavity can be adjusted by adjusting the heating flow of the heater, and when the temperature adjustment increment of the static pressure cavity is the same as the second temperature difference value, the actual temperature of the upper air cavity can be equal to the calibration temperature, so that the temperature of the pole piece coating surface can be always kept at the calibration temperature in the pole piece baking process, the uniformity of heating the surface of the pole piece is ensured, the situations of cracking, pole piece curling or excessive local drying and the like in the pole piece drying process are effectively avoided, and the yield of manufacturing the battery pole piece is improved.

In a possible implementation manner, the obtaining a calibration temperature of the static pressure cavity according to the first temperature difference value and a preset first conversion rule includes:

and obtaining the calibration temperature of the upper air cavity according to the first temperature difference value and a preset first conversion rule.

Because the temperature transmission between the battery pole piece coating surface and the static pressure cavity is indirect transmission and needs to pass through the upper air cavity, and the temperature of the battery pole piece coating surface and the temperature of the static pressure cavity have errors in the conversion process, when a first temperature difference value of the battery pole piece coating surface is obtained, a temperature difference signal corresponding to the first temperature difference value can be transmitted to the control system, the control system is provided with a corresponding relation between a temperature value and a voltage value, for example, 1 degree corresponds to 0.1V voltage, the control system transmits the voltage signal corresponding to the first temperature difference value to the upper air cavity, and converts the corresponding voltage signal into a corresponding temperature value according to a preset conversion rule, for example, 0.5V corresponds to 5 degrees, and the sum of the temperature value and the actual temperature of the upper air cavity is the calibration temperature of the upper air cavity.

And acquiring the actual temperature of the upper air cavity, and comparing the actual temperature of the upper air cavity with the calibration temperature of the upper air cavity to obtain a third temperature difference value.

Specifically, the actual temperature of the upper air cavity can be obtained by arranging a temperature detection device such as a temperature sensor in the upper air cavity, and the actual temperature in the upper air cavity is compared with the obtained calibration temperature of the upper air cavity to obtain a third temperature difference value between the actual temperature of the upper air cavity and the calibration temperature of the upper air cavity.

And obtaining the calibration temperature of the static pressure cavity according to the third temperature difference value and a preset second conversion rule.

Specifically, when a third temperature difference value between the actual temperature of the upper air cavity and the calibration temperature is obtained, a temperature difference signal corresponding to the third temperature difference value can be transmitted to the control system, a corresponding relation between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage is corresponding to 1 °, the control system transmits a voltage signal corresponding to the third temperature difference value to the static pressure cavity, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset second conversion rule, for example, 5 degrees corresponding to 0.5V, wherein the sum of the temperature value and the actual temperature of the static pressure cavity is the calibration temperature of the static pressure cavity, and the calculation accuracy of the calibration temperature of the static pressure cavity is improved.

In a possible implementation manner, the obtaining a preset calibration temperature of the windward cavity according to the first temperature difference value and a preset first conversion rule includes:

and obtaining the calibration temperature between the air nozzles of the upper air cavity according to the first temperature difference value and a preset first conversion rule.

Because the temperature transmission between the battery pole piece coating surface and the upper air cavity body is indirect transmission and needs to pass through an upper air cavity air nozzle between the upper air cavity body and the battery pole piece, and the temperature of the battery pole piece coating surface and the temperature of the upper air cavity body have errors in the conversion process, when a first temperature difference value of the battery pole piece coating surface is obtained, a temperature difference signal corresponding to the first temperature difference value can be transmitted to a control system, the control system is provided with a corresponding relation between a temperature value and a voltage value, for example, 1 degree corresponds to 0.1V voltage, the control system transmits a voltage signal corresponding to the first temperature difference value to the upper air cavity air nozzle, converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset conversion rule, for example, 0.5V corresponds to 5 degrees, and the sum of the temperature value and the actual temperature between the upper air cavity air nozzles is the calibration temperature between the upper air cavity air nozzles.

And acquiring the actual temperature between the air nozzles of the upper air cavity, and comparing the actual temperature between the air nozzles of the upper air cavity with the calibrated temperature between the air nozzles of the upper air cavity to obtain a fourth temperature difference value.

Specifically, the actual temperature of the upper air cavity can be obtained by arranging a temperature detection device such as a temperature sensor between the air nozzles of the upper air cavity, and the actual temperature between the air nozzles of the upper air cavity is compared with the obtained calibration temperature of the air nozzles of the upper air cavity, so that a fourth temperature difference value between the actual temperature of the air nozzles of the upper air cavity and the calibration temperature of the air nozzles of the upper air cavity is obtained.

And obtaining the preset calibration temperature of the upper air cavity according to the fourth temperature difference value and a preset third conversion rule.

Specifically, when a fourth temperature difference value between the actual temperature of the upper air cavity tuyere and the calibration temperature thereof is obtained, a temperature difference signal corresponding to the fourth temperature difference value can be transmitted to the control system, a corresponding relation between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage is corresponding to 1 degree, the control system transmits a voltage signal corresponding to the fourth temperature difference value to the upper air cavity, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset third conversion rule, for example, 5 degrees corresponding to 0.5V, wherein the sum of the temperature value and the actual temperature of the upper air cavity is the calibration temperature of the upper air cavity, and the accuracy of the calibration temperature calculation of the upper air cavity is improved.

In one possible implementation manner, the method further includes: and obtaining the calibration temperature of the lower air cavity according to the calibration temperature of the upper air cavity and the preset temperature ratio between the upper air cavity and the lower air cavity.

Because the preset temperature ratio between the upper wind cavity body and the lower wind cavity body is a known value, the calibration temperature of the lower wind cavity body can be obtained under the condition that the calibration temperature of the upper wind cavity body exists.

And acquiring the actual temperature of the lower air cavity body to obtain the actual temperature ratio of the upper air cavity body to the lower air cavity body.

Specifically, after a temperature detection device such as a temperature sensor is arranged in the lower air cavity, the actual temperature of the lower air cavity can be obtained, and the ratio of the actual temperature of the lower air cavity to the calibration temperature of the upper air cavity is the actual temperature ratio of the upper air cavity to the lower air cavity.

And judging whether the actual temperature ratio of the upper air cavity body to the lower air cavity body is constant with a preset temperature ratio.

Whether the actual temperature ratio of the upper air cavity body to the lower air cavity body is constant or not and the preset temperature ratio are judged, so that whether the temperature of the lower air cavity body needs to be adjusted or not can be determined, and the temperature ratio of the lower air cavity body to the upper air cavity body is always equal to the preset temperature ratio.

If the temperature of the upper air cavity and the lower air cavity is not constant, the flow of the heater is adjusted, the valve opening degrees of the first valve and the second valve are adjusted, so that the actual temperature ratio of the upper air cavity and the lower air cavity and the preset temperature ratio are kept constant, or the opening degree of the second valve is adjusted, so that the actual temperature ratio of the upper air cavity and the lower air cavity and the preset temperature ratio are kept constant.

If the actual temperature ratio of the lower air cavity body to the upper air cavity body is different from the preset temperature ratio, the temperature of the lower air cavity body needs to be adjusted, specifically, because the temperature of the upper air cavity body is already adjusted to the preset calibration temperature, the heating flow of the heater can be adjusted at the moment, and the valve openings of the first valve and the second valve are adjusted, so that when the temperature of the static pressure cavity is adjusted, the temperature of the upper air cavity body is always kept at the preset calibration temperature, meanwhile, the temperature of the lower air cavity body is adjusted, and the actual temperature ratio of the upper air cavity body to the lower air cavity body is kept constant with the preset temperature ratio, so that the uniformity of heating of the coating surface and the bottom surface of the battery pole piece is ensured, and the occurrence of cracking, curling or excessive drying of the battery pole piece in the drying process is further avoided. Or, under the condition that the temperature of the static pressure cavity is high enough, the temperature of the lower air cavity can be adjusted by directly adjusting the valve opening of the second valve between the static pressure cavity and the lower air cavity, and the temperature of the upper air cavity is kept unchanged, so that the actual temperature ratio of the lower air cavity to the lower air cavity is kept constant with the preset temperature ratio.

And if the constant value is obtained, keeping the valve opening degrees of the first valve and the second valve.

If the actual temperature ratio of the lower air cavity body to the upper air cavity body is the same as the preset temperature ratio, the temperature of the lower air cavity does not need to be adjusted, the temperature of the static pressure cavity is kept, and the valve opening degrees of the first valve and the second valve are kept.

In an embodiment of the second aspect of the present application, there is provided a temperature control method for an oven as described in any one of the embodiments of the first aspect, the temperature control method including: and acquiring the actual temperature of the coating surface of the battery pole piece, and comparing the actual temperature value of the coating surface of the pole piece with the preset calibration temperature of the coating surface of the battery pole piece to obtain a fifth temperature difference value.

Specifically, a temperature detection device such as a temperature sensor is arranged on the coating surface of the battery pole piece to acquire the actual temperature of the coating surface of the battery pole piece in real time, and then the actual temperature of the coating surface of the battery pole piece is compared with the calibration temperature of the coating surface of the battery pole piece to obtain a fifth temperature difference value between the actual temperature of the coating surface of the battery pole piece and the preset calibration temperature.

And obtaining the calibration temperature of the upper air cavity according to the fifth temperature difference value and a preset fourth conversion rule.

Specifically, when a fifth temperature difference value of the coating surface of the battery pole piece is obtained, a temperature difference signal corresponding to the fifth temperature difference value can be transmitted to the control system, a corresponding relation between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage corresponds to 1 degree, the control system transmits the voltage signal corresponding to the fifth temperature difference value to the windward cavity, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset conversion rule, for example, 5 degrees corresponds to 0.5V, and the sum of the temperature value and the actual temperature of the windward cavity is the calibration temperature of the windward cavity.

And acquiring the actual temperature of the upper air cavity, and comparing the actual temperature of the upper air cavity with the calibration temperature of the upper air cavity to obtain a sixth temperature difference value.

Specifically, the actual temperature of the upper air cavity can be obtained by arranging a temperature detection device such as a temperature sensor in the upper air cavity, and the actual temperature in the upper air cavity is compared with the obtained calibration temperature of the upper air cavity to obtain a sixth temperature difference value between the actual temperature of the upper air cavity and the calibration temperature.

And adjusting the valve opening of the first valve to enable the temperature adjustment increment of the upper air cavity to be equal to the sixth temperature difference value.

Because the static pressure cavity is communicated with the upper air cavity through the first valve, the temperature in the upper air cavity can be adjusted by adjusting the opening degree of the first valve, and the temperature adjustment increment of the upper air cavity can be equal to the sixth temperature difference value through the relation between the preset valve opening degree and the heat control, so that the heat loss of the upper air cavity is compensated, and the heating uniformity of the temperature of the coating surface of the battery pole piece is ensured.

In a possible implementation manner, the obtaining a calibration temperature of the upper cavity according to the fifth temperature difference value and a preset fourth conversion rule includes:

and obtaining the calibration temperature between the air nozzles of the upper air cavity according to the fifth temperature difference value and a preset fourth conversion rule.

Because the temperature transmission between the battery pole piece coating surface and the upper air cavity body is indirect transmission and needs to pass through an upper air cavity air nozzle between the upper air cavity body and the battery pole piece, and the temperature of the battery pole piece coating surface and the temperature of the upper air cavity body have errors in the conversion process, when a fifth temperature difference value of the battery pole piece coating surface is obtained, a temperature difference signal corresponding to the fifth temperature difference value can be transmitted to a control system, the control system is provided with a corresponding relation between a temperature value and a voltage value, for example, 1 degree corresponds to 0.1V voltage, the control system transmits a voltage signal corresponding to the fifth temperature difference value to the upper air cavity air nozzle, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset conversion rule, for example, 0.5V corresponds to 5 degrees, and the sum of the temperature value and the actual temperature between the upper air cavity air nozzles is the calibration temperature between the upper air cavity air nozzles. .

And acquiring the actual temperature between the air nozzles of the upper air cavity, and comparing the actual temperature between the air nozzles of the upper air cavity with the calibrated temperature between the air nozzles of the upper air cavity to obtain a seventh temperature difference value.

Specifically, the actual temperature of the upper air cavity can be obtained by arranging a temperature detection device such as a temperature sensor between the air nozzles of the upper air cavity, and the actual temperature between the air nozzles of the upper air cavity is compared with the obtained calibration temperature of the air nozzles of the upper air cavity, so that a seventh temperature difference value between the actual temperature of the air nozzles of the upper air cavity and the calibration temperature of the air nozzles of the upper air cavity is obtained.

And obtaining the calibration temperature of the upper air cavity according to the seventh temperature difference value and a preset fifth conversion rule.

Specifically, when a seventh temperature difference value between the actual temperature of the upper air cavity tuyere and the calibration temperature thereof is obtained, a temperature difference signal corresponding to the seventh temperature difference value can be transmitted to the control system, a corresponding relation between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage is corresponding to 1 degree, the control system transmits a voltage signal corresponding to the seventh temperature difference value to the upper air cavity, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset third conversion rule, for example, 5 degrees corresponding to 0.5V, wherein the sum of the temperature value and the actual temperature of the upper air cavity is the calibration temperature of the upper air cavity, and the accuracy of the calibration temperature calculation of the upper air cavity is improved.

Judging whether the actual temperature ratio of the upper air cavity body to the lower air cavity body is constant with the preset temperature ratio,

Embodiments of a third aspect of the present application provide an oven, including: an upper air cavity; the lower air cavity is symmetrically arranged below the upper air cavity, and a battery pole piece is arranged between the upper air cavity and the lower air cavity; the static pressure cavity is communicated with the upper air cavity through a first valve and is communicated with the lower air cavity through a second valve; the heater is communicated with the static pressure cavity and used for supplying heat to the static pressure cavity; the first temperature sensor is arranged on the coating surface of the battery pole piece and used for detecting the actual temperature of the coating surface of the battery pole piece; the second temperature sensor is arranged in the static pressure cavity and used for detecting the actual temperature in the static pressure cavity; the first temperature conversion module is electrically connected with the first temperature sensor and the second temperature sensor and used for obtaining the calibration temperature of the static pressure cavity according to a first temperature difference between the actual temperature of the coating surface of the battery pole piece and the preset calibration temperature of the coating surface of the battery pole piece and a preset first conversion rule and obtaining a second temperature difference value between the actual temperature of the static pressure cavity and the calibration temperature of the static pressure cavity; and the temperature controller comprises a first control module electrically connected with the temperature conversion unit and the heater, and the first control module is suitable for adjusting the heating flow of the heater according to the second temperature difference value, so that the temperature adjustment increment of the static pressure cavity to the upper air cavity is equal to the second temperature difference value, and the actual temperature of the upper air cavity is adjusted to be equal to the calibrated temperature of the upper air cavity.

Furthermore, a third temperature sensor can be arranged between the air nozzles of the upper air cavity, a fourth temperature sensor is arranged in the cavity of the upper air cavity, the third temperature sensor is used for detecting the actual temperature between the air nozzles of the upper air cavity, the fourth temperature sensor is used for detecting the actual temperature in the cavity of the upper air cavity, the third temperature sensor and the fourth temperature sensor are respectively electrically connected with the controller, the controller can obtain the calibration temperature between the air nozzles of the upper air cavity through the temperature difference value between the actual temperature and the calibration temperature of the coating surface of the battery pole piece and a preset conversion rule, then obtain the calibration temperature of the cavity of the upper air cavity through the actual temperature between the air nozzles of the upper air cavity and the preset conversion rule, and further convert the calibration temperature in the static pressure cavity through the actual temperature in the cavity of the upper air cavity and the preset conversion rule.

An embodiment of a fourth aspect of the present application provides an electronic device, including: a processor and a memory storing computer readable instructions that, when executed by the processor, perform the method of any of the embodiments of the first and second aspects

In a fifth aspect, the present application provides a readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, performs the method according to any one of the first and second aspects.

According to the temperature control method provided by the embodiment of the application, the actual temperature of the coating surface of the battery pole piece is obtained in real time, the preset calibration temperature is combined, the first temperature difference value between the actual temperature of the coating surface of the battery pole piece and the calibration temperature can be obtained, the calibration temperature of the static pressure cavity can be obtained through the preset conversion rule, then the actual temperature of the static pressure cavity is obtained, the temperature increment required by the static pressure cavity can be determined, and the temperature increment of the static pressure cavity is adjusted to enable the actual temperature of the coating surface of the battery pole piece to be equal to the calibration temperature, so that the drying temperature of the coating surface of the battery pole piece can be adjusted in real time, the heating uniformity of the pole piece in the drying process is improved, and the defects of cracking, pole piece curling or local drying excess and the like of the battery pole piece are effectively avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a flowchart of a temperature control method according to an embodiment of the present disclosure;

FIG. 2 is a flow chart of another temperature control method provided by an embodiment of the present application;

FIG. 3 is a schematic cross-sectional structural view of an oven provided in an embodiment of the present application from one perspective;

FIG. 4 is a schematic cross-sectional structural view of another perspective of an oven provided by an embodiment of the present application;

fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Icon: 10. an oven; 101. an upper air cavity; 102. a battery pole piece; 103. a lower air cavity; 104. a first temperature sensor; 105. a third temperature sensor; 106. an upper plenum tuyere; 107. a fourth temperature sensor; 108. a static pressure chamber; 1081. a first valve; 1082. a second temperature sensor; 200. an electronic device; 201. a processor; 202. a memory.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in figure 1 of the drawings, in which,

the temperature control method provided by the embodiment of the first aspect of the application is used for an oven 10 for coating a battery pole piece 102, the oven 10 comprises an upper air cavity 101, a lower air cavity 103, a static pressure cavity 108 and a heater connected with the static pressure cavity 108, the static pressure cavity 108 is communicated with the upper air cavity 101 through a first valve 1081 and is communicated with the lower air cavity 103 through a second valve, a channel for conveying the battery pole piece 102 is arranged between the upper air cavity 101 and the lower air cavity 103, and the temperature control method comprises the following steps:

step S100: the actual temperature of the coating surface of the battery pole piece 102 is obtained, and the actual temperature value of the coating surface of the pole piece is compared with a preset calibration temperature of the coating surface of the battery pole piece 102 to obtain a first temperature difference value.

Specifically, the actual temperature of the coating surface of the battery pole piece 102 can be acquired in real time by a temperature detection device such as a temperature sensor arranged on the coating surface of the battery pole piece 102, and then the actual temperature of the coating surface of the battery pole piece 102 is compared with the calibration temperature of the actual temperature to obtain a first temperature difference value between the actual temperature of the coating surface of the battery pole piece 102 and the preset calibration temperature.

Step S102: and obtaining the calibration temperature of the static pressure cavity 108 according to the first temperature difference value and a preset first conversion rule.

Specifically, when a first temperature difference value of the coating surface of the battery pole piece 102 is obtained, a temperature difference signal corresponding to the first temperature difference value can be transmitted to the control system, a corresponding relation between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage corresponds to 1 °, the control system transmits the voltage signal corresponding to the first temperature difference value to the static pressure cavity 108, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset conversion rule, for example, 5V corresponds to 0.5V, and the sum of the temperature value and the actual temperature of the static pressure cavity 108 is the calibration temperature of the static pressure cavity 108.

Step S104: and acquiring the actual temperature of the static pressure cavity 108, and comparing the actual temperature of the static pressure cavity 108 with the calibrated temperature of the static pressure cavity 108 to obtain a second temperature difference value.

Specifically, a temperature sensor or other temperature detection device may be disposed in the static pressure cavity 108, and the actual temperature in the static pressure cavity 108 is compared with the obtained calibration temperature to obtain a second temperature difference value between the actual temperature and the calibration temperature of the static pressure cavity 108.

Step S106: and adjusting the heating flow of the heater to enable the temperature adjustment increment of the static pressure cavity 108 to be equal to the second temperature difference value, so that the actual temperature of the upper air cavity 101 is adjusted to be equal to the calibration temperature of the upper air cavity 101.

Because the heater is connected with the static pressure cavity 108, and the static pressure cavity 108 is communicated with the upper air cavity 101, the temperature in the static pressure cavity 108 can be adjusted by adjusting the heating flow of the heater, and when the temperature adjustment increment of the static pressure cavity 108 is the same as the second temperature difference value, the actual temperature of the upper air cavity 101 can be equal to the calibration temperature, so that the temperature of the pole piece coating surface can be always kept at the calibration temperature in the pole piece baking process, the uniformity of heating the pole piece surface can be ensured, the situations of cracking, pole piece curling or excessive local drying and the like in the pole piece drying process can be effectively avoided, and the yield of manufacturing the battery pole piece 102 is improved.

In a possible implementation manner, obtaining the calibration temperature of the static pressure cavity 108 according to the first temperature difference value and a preset first conversion rule includes:

and obtaining the calibration temperature of the upwind cavity 101 according to the first temperature difference value and a preset first conversion rule.

Because the temperature transmission between the coating surface of the battery pole piece 102 and the static pressure cavity 108 is indirect transmission and needs to pass through the upper air cavity 101, and the temperature of the coating surface of the battery pole piece 102 and the temperature of the static pressure cavity 108 have errors in the conversion process, when a first temperature difference value of the coating surface of the battery pole piece 102 is obtained, a temperature difference signal corresponding to the first temperature difference value can be transmitted to the control system, a corresponding relation between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage is corresponding to 1 degree, the control system transmits the voltage signal corresponding to the first temperature difference value to the upper air cavity 101, and converts the corresponding voltage signal into a corresponding temperature value according to a preset conversion rule, for example, 5 degrees is corresponding to 0.5V, and the sum of the temperature value and the actual temperature of the upper air cavity 101 is the calibration temperature of the upper air cavity 101.

And acquiring the actual temperature of the upwind cavity 101, and comparing the actual temperature of the upwind cavity 101 with the calibrated temperature of the upwind cavity 101 to obtain a third temperature difference value.

Specifically, the actual temperature of the windward cavity 101 may be obtained by providing a temperature detection device such as a temperature sensor in the windward cavity 101, and the actual temperature in the windward cavity 101 is compared with the obtained calibration temperature of the windward cavity 101, so as to obtain a third temperature difference value between the actual temperature of the windward cavity 101 and the calibration temperature thereof.

And obtaining the calibration temperature of the static pressure cavity 108 according to the third temperature difference value and a preset second conversion rule.

Specifically, when a third temperature difference value between the actual temperature of the upper air cavity 101 and the calibration temperature is obtained, a temperature difference signal corresponding to the third temperature difference value may be transmitted to the control system, a corresponding relationship between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage is corresponding to 1 °, the control system transmits a voltage signal corresponding to the third temperature difference value to the static pressure cavity 108, and converts the corresponding voltage signal into a corresponding temperature value according to a preset second conversion rule, for example, 5 ° corresponding to 0.5V, and a sum of the temperature value and the actual temperature of the static pressure cavity 108 is the calibration temperature of the static pressure cavity 108, so that accuracy of calibration calculation of the temperature of the static pressure cavity 108 is improved.

In a possible implementation manner, obtaining a preset calibration temperature of the upwind cavity 101 according to the first temperature difference value and a preset first conversion rule includes:

and obtaining the calibration temperature between the blast nozzles 106 of the upper blast cavity according to the first temperature difference value and a preset first conversion rule.

Because the temperature transmission between the coating surface of the battery pole piece 102 and the upper air cavity 101 is indirect transmission, the temperature of the coating surface of the battery pole piece 102 and the temperature of the upper air cavity 101 have errors in the conversion process because the temperature needs to pass through the upper air cavity tuyere 106 between the upper air cavity 101 and the battery pole piece 102, when a first temperature difference value of the coating surface of the battery pole piece 102 is obtained, a temperature difference signal corresponding to the first temperature difference value can be transmitted to a control system, the control system is provided with a corresponding relation between a temperature value and a voltage value, if the voltage is 0.1V corresponding to 1 degree, the control system transmits a voltage signal corresponding to the first temperature difference value to the blast nozzle 106 of the upper blast cavity, and converting the corresponding voltage signal into a corresponding temperature value according to a preset conversion rule, such as 0.5V corresponding to 5 degrees, the sum of the temperature value and the actual temperature between the upper air cavity nozzles 106 is the calibrated temperature between the upper air cavity nozzles 106.

And acquiring the actual temperature between the upper air cavity nozzles 106, and comparing the actual temperature between the upper air cavity nozzles 106 with the calibrated temperature between the upper air cavity nozzles 106 to obtain a fourth temperature difference value.

Specifically, the actual temperature of the upper air cavity 101 may be obtained by arranging a temperature detection device such as a temperature sensor between the upper air cavity nozzles 106, and the actual temperature between the upper air cavity nozzles 106 is compared with the obtained calibration temperature of the upper air cavity nozzles 106, so as to obtain a fourth temperature difference value between the actual temperature of the upper air cavity nozzles 106 and the calibration temperature thereof.

And obtaining the preset calibration temperature of the upwind cavity 101 according to the fourth temperature difference value and a preset third conversion rule.

Specifically, when a fourth temperature difference value between the actual temperature of the upper air cavity tuyere 106 and the calibration temperature thereof is obtained, a temperature difference signal corresponding to the fourth temperature difference value may be transmitted to the control system, a corresponding relationship between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage corresponds to 1 °, the control system transmits a voltage signal corresponding to the fourth temperature difference value to the upper air cavity 101, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset third conversion rule, for example, 5 ° corresponds to 0.5V, and the sum of the temperature value and the actual temperature of the upper air cavity 101 is the calibration temperature of the upper air cavity 101, so that the accuracy of the calibration temperature calculation of the upper air cavity 101 is improved.

In one possible implementation manner, the method further includes: and obtaining the calibration temperature of the lower wind cavity body 103 according to the calibration temperature of the upper wind cavity body 101 and the preset temperature ratio between the upper wind cavity body 101 and the lower wind cavity body 103.

Since the preset temperature ratio between the upwind cavity 101 and the downwind cavity 103 is a known value, the calibration temperature of the downwind cavity 103 can be obtained under the condition that the calibration temperature of the upwind cavity 101 exists.

And acquiring the actual temperature of the lower air cavity 103 to obtain the actual temperature ratio of the upper air cavity 101 to the lower air cavity 103.

Specifically, after a temperature detection device such as a temperature sensor is arranged in the lower air cavity 103, the actual temperature of the lower air cavity 103 can be obtained, and the ratio of the actual temperature of the lower air cavity 103 to the calibration temperature of the upper air cavity 101 is the actual temperature ratio of the upper air cavity 101 to the lower air cavity 103.

And judging whether the actual temperature ratio of the upper air cavity 101 to the lower air cavity 103 is constant with the preset temperature ratio.

Whether the actual temperature ratio of the upper air cavity body 101 to the lower air cavity body 103 is constant with the preset temperature ratio or not is judged, so that whether the temperature of the lower air cavity body 103 needs to be adjusted or not can be determined, and the temperature ratio of the lower air cavity body 103 to the upper air cavity body 101 is always equal to the preset temperature ratio.

If the temperature of the air in the upper air cavity 101 is not constant, the flow of the heater is adjusted, and the valve opening degrees of the first valve 1081 and the second valve are adjusted, so that the actual temperature ratio of the upper air cavity 101 to the lower air cavity 103 is kept constant with the preset temperature ratio, or the opening degree of the second valve is adjusted, so that the actual temperature ratio of the upper air cavity 101 to the lower air cavity 103 is kept constant with the preset temperature ratio.

If the actual temperature ratio of the lower wind cavity 103 to the upper wind cavity 101 is different from the preset temperature ratio, the temperature of the lower wind cavity 103 needs to be adjusted, specifically, since the temperature of the windward cavity 101 is adjusted to the preset calibration temperature, the heating flow of the heater can be adjusted, and the valve opening degree of the first valve 1081 and the second valve can be adjusted, so as to ensure that the temperature of the upper air cavity 101 is always maintained at the preset calibration temperature when the temperature of the static pressure cavity 108 is adjusted, meanwhile, the temperature of the lower air cavity 103 is adjusted to keep the actual temperature ratio of the upper air cavity 101 and the lower air cavity 103 constant with the preset temperature ratio, therefore, the uniformity of heating of the coating surface and the bottom surface of the battery pole piece 102 is ensured, and the occurrence of cracks, pole piece curling or excessive drying in the drying process of the battery pole piece 102 is further avoided. Or, under the condition that the temperature of the static pressure cavity 108 is sufficiently high, the opening degree of the second valve between the static pressure cavity 108 and the lower air cavity 103 can be directly adjusted to adjust the temperature of the lower air cavity 103, and the temperature of the upper air cavity 101 is ensured to be kept unchanged, so that the actual temperature ratio of the lower air cavity 103 to the lower air cavity 103 is kept constant with the preset temperature ratio.

If constant, the valve opening of the first valve 1081 and the second valve are maintained.

If the actual temperature ratio of the lower air cavity 103 to the upper air cavity 101 is the same as the preset temperature ratio, the temperature of the lower air cavity does not need to be adjusted, the temperature of the static pressure cavity 108 is kept, and the valve opening degrees of the first valve 1081 and the second valve are kept.

As shown in fig. 2, a second embodiment of the present application provides a temperature control method for oven 10 in any one of the first embodiment, where the temperature control method includes:

step S200: and acquiring the actual temperature of the coating surface of the battery pole piece 102, and comparing the actual temperature value of the coating surface of the pole piece with the preset calibration temperature of the coating surface of the battery pole piece 102 to obtain a fifth temperature difference value.

Specifically, a temperature detection device such as a temperature sensor is arranged on the coating surface of the battery pole piece 102 to acquire the actual temperature of the coating surface of the battery pole piece 102 in real time, and then the actual temperature of the coating surface of the battery pole piece 102 is compared with the calibration temperature of the coating surface of the battery pole piece 102 to obtain a fifth temperature difference value between the actual temperature of the coating surface of the battery pole piece 102 and the preset calibration temperature.

Step S202: and obtaining the calibration temperature of the upper air cavity 101 according to the fifth temperature difference value and a preset fourth conversion rule.

Specifically, when a fifth temperature difference value of the coating surface of the battery pole piece 102 is obtained, a temperature difference signal corresponding to the fifth temperature difference value can be transmitted to the control system, a corresponding relation between a temperature value and a voltage value is set in the control system, for example, 0.1V voltage corresponds to 1 °, the control system transmits the voltage signal corresponding to the fifth temperature difference value to the windward cavity 101, and converts the corresponding voltage signal into a temperature value corresponding to the voltage signal according to a preset conversion rule, for example, 5V corresponds to 0.5V, and the sum of the temperature value and the actual temperature of the windward cavity 101 is the calibration temperature of the windward cavity 101.

Step S204: and acquiring the actual temperature of the upwind cavity 101, and comparing the actual temperature of the upwind cavity 101 with the calibration temperature of the upwind cavity 101 to obtain a sixth temperature difference value.

Specifically, the actual temperature of the windward cavity 101 may be obtained by providing a temperature detection device such as a temperature sensor in the windward cavity 101, and the actual temperature in the windward cavity 101 is compared with the obtained calibration temperature of the windward cavity 101, so as to obtain a sixth temperature difference value between the actual temperature of the windward cavity 101 and the calibration temperature thereof.

Step S206: and adjusting the valve opening degree of the first valve 1081 to enable the temperature adjustment increment of the upper air cavity 101 to be equal to the sixth temperature difference value.

Because the static pressure cavity 108 is communicated with the upper air cavity 101 through the first valve 1081, the temperature in the upper air cavity 101 can be adjusted by adjusting the opening degree of the first valve 1081, and then the temperature adjustment increment of the upper air cavity 101 is equal to the sixth temperature difference value through the relation between the preset valve opening degree and the heat control, so as to compensate the heat loss of the upper air cavity 101, and further ensure the heating uniformity of the temperature of the coating surface of the battery pole piece 102.

In a possible implementation manner, obtaining the calibration temperature of the upper wind cavity 101 according to the fifth temperature difference value and a preset fourth conversion rule includes:

and obtaining the calibration temperature between the blast nozzles 106 of the upper blast cavity according to the fifth temperature difference value and a preset fourth conversion rule.

Because the temperature transmission between the coating surface of the battery pole piece 102 and the upper air cavity 101 is indirect transmission, the temperature of the coating surface of the battery pole piece 102 and the temperature of the upper air cavity 101 have errors in the conversion process because the temperature needs to pass through the upper air cavity tuyere 106 between the upper air cavity 101 and the battery pole piece 102, when a fifth temperature difference value of the coating surface of the battery pole piece 102 is obtained, a temperature difference signal corresponding to the fifth temperature difference value can be transmitted to the control system, the control system is provided with a corresponding relation between a temperature value and a voltage value, if the voltage is 0.1V corresponding to 1 degree, the control system transmits a voltage signal corresponding to the fifth temperature difference value to the blast nozzle 106 of the upper blast cavity, and converting the corresponding voltage signal into a corresponding temperature value according to a preset conversion rule, such as 0.5V corresponding to 5 degrees, the sum of the temperature value and the actual temperature between the upper air cavity nozzles 106 is the calibrated temperature between the upper air cavity nozzles 106. .

And acquiring the actual temperature between the upper air cavity nozzles 106, and comparing the actual temperature between the upper air cavity nozzles 106 with the calibrated temperature between the upper air cavity nozzles 106 to obtain a seventh temperature difference value.

Specifically, the actual temperature of the upper air cavity 101 may be obtained by arranging a temperature detection device such as a temperature sensor between the upper air cavity nozzles 106, and the actual temperature between the upper air cavity nozzles 106 is compared with the obtained calibration temperature of the upper air cavity nozzles 106, so as to obtain a seventh temperature difference value between the actual temperature of the upper air cavity nozzles 106 and the calibration temperature thereof.

And obtaining the calibration temperature of the upper air cavity 101 according to the seventh temperature difference value and a preset fifth conversion rule.

Specifically, when a seventh temperature difference value between the actual temperature of the upper air cavity tuyere 106 and the calibration temperature thereof is obtained, a temperature difference signal corresponding to the seventh temperature difference value may be transmitted to the control system, a corresponding relationship between a temperature value and a voltage value is set in the control system, for example, 1 ° corresponds to 0.1V, the control system transmits a voltage signal corresponding to the seventh temperature difference value to the upper air cavity 101, and converts the corresponding voltage signal into a temperature value corresponding thereto according to a preset third conversion rule, for example, 0.5V corresponds to 5 °, and a sum of the temperature value and the actual temperature of the upper air cavity 101 is the calibration temperature of the upper air cavity 101, thereby improving the accuracy of the calibration temperature calculation of the upper air cavity 101.

In a possible implementation manner, obtaining the calibration temperature of the upwind cavity 101 according to the first temperature difference value and a preset first conversion rule includes:

Because the temperature transmission between the coating surface of the battery pole piece 102 and the upper air cavity 101 is indirect transmission, the temperature of the coating surface of the battery pole piece 102 and the temperature of the upper air cavity 101 have errors in the conversion process because the temperature needs to pass through the upper air cavity tuyere 106 between the upper air cavity 101 and the battery pole piece 102, when a first temperature difference value of the coating surface of the battery pole piece 102 is obtained, a temperature difference signal corresponding to the first temperature difference value can be transmitted to a control system, the control system is provided with a corresponding relation between a temperature value and a voltage value, if the voltage is 0.1V corresponding to 1 degree, the control system transmits a voltage signal corresponding to the first temperature difference value to the blast nozzle 106 of the upper blast cavity, and converting the corresponding voltage signal into a corresponding temperature value according to a preset conversion rule, such as 0.5V corresponding to 5 degrees, the sum of the temperature value and the actual temperature between the upper air cavity nozzles 106 is the calibrated temperature between the upper air cavity nozzles 106. .

And acquiring the actual temperature between the upper air cavity nozzles 106, and comparing the actual temperature between the upper air cavity nozzles 106 with the calibrated temperature between the upper air cavity nozzles 106 to obtain a third temperature difference value.

And obtaining the calibration temperature of the upwind cavity 101 according to the third temperature difference value and a preset second conversion rule.

Judging whether the actual temperature ratio of the upper air cavity body 101 to the lower air cavity body 103 is constant with the preset temperature ratio,

As shown in fig. 3 and 4, an embodiment of the third aspect of the present application provides an oven 10, including: an upwind cavity 101; the lower air cavity body 103 is symmetrically arranged below the upper air cavity body 101, and a battery pole piece 102 is arranged between the upper air cavity body 101 and the lower air cavity body 103; the static pressure cavity 108 is communicated with the upper air cavity body 101 through a first valve 1081 and communicated with the lower air cavity body 103 through a second valve; the heater is communicated with the static pressure cavity 108 and used for supplying heat to the static pressure cavity 108; the first temperature sensor 104 is arranged on the coating surface of the battery pole piece 102 and used for detecting the actual temperature of the coating surface of the battery pole piece 102; a second temperature sensor 1082, disposed within hydrostatic cavity 108, for detecting an actual temperature within hydrostatic cavity 108; the first temperature conversion module is electrically connected with the first temperature sensor 104 and the second temperature sensor 1082 and is used for obtaining the calibration temperature of the static pressure cavity 108 according to a first temperature difference between the actual temperature of the coating surface of the battery pole piece 102 and the preset calibration temperature of the coating surface of the battery pole piece 102 and a preset first conversion rule and obtaining a second temperature difference value between the actual temperature of the static pressure cavity 108 and the calibration temperature of the static pressure cavity 108; and the temperature controller comprises a first control module electrically connected with the temperature conversion unit and the heater, and the first control module is suitable for adjusting the heating flow of the heater according to the second temperature difference value, so that the temperature adjustment increment of the static pressure cavity 108 to the upper air cavity 101 is equal to the second temperature difference value, and the actual temperature of the upper air cavity 101 is adjusted to be equal to the calibrated temperature of the upper air cavity 101.

Further, a third temperature sensor 105 may be disposed between the air nozzles 106 of the upper air cavity, a fourth temperature sensor 107 may be disposed in the upper air cavity 101, the third temperature sensor 105 is configured to detect an actual temperature between the air nozzles 106 of the upper air cavity, the fourth temperature sensor 107 is configured to detect an actual temperature in the upper air cavity 101, the third temperature sensor 105 and the fourth temperature sensor 107 are electrically connected to the controller, respectively, the controller may obtain a calibration temperature between the air nozzles 106 of the upper air cavity through a temperature difference value between an actual temperature and a calibration temperature of the battery pole piece coating surface and a preset conversion rule, obtain a calibration temperature of the upper air cavity 101 through an actual temperature between the air nozzles 106 of the upper air cavity and a preset conversion rule, and convert the calibration temperature in the static pressure cavity 108 through an actual temperature and a preset conversion rule in the upper air cavity 101.

As shown in fig. 5, a fourth aspect of the present application provides an electronic device 200 including: a processor 201 and a memory 202.

The processor 201 is a control center of the electronic apparatus 200, connects various components using various interfaces and lines, and performs various functions of the electronic apparatus 200 by running or executing software programs and/or data stored in the memory 202, thereby performing overall monitoring of the electronic apparatus 200.

In the embodiment of the present application, the processor 201, when calling the computer program stored in the memory 202, executes the method of temperature control provided in the embodiment shown in fig. 1 or fig. 2. Those skilled in the art will appreciate that fig. 5 is merely an example of an electronic device and is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or different components.

Embodiments of the fifth aspect of the present application provide a readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the electronic device may perform the steps in the foregoing embodiments.

For convenience of description, the above parts are separately described as modules (or units) according to functional division. Of course, the functionality of the various modules (or units) may be implemented in the same one or more pieces of software or hardware when implementing the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A temperature control method is used for an oven for coating a battery pole piece, the oven comprises an upper air cavity, a lower air cavity, a static pressure cavity and a heater connected with the static pressure cavity, the static pressure cavity is communicated with the upper air cavity through a first valve and is communicated with the lower air cavity through a second valve, and a channel for conveying the battery pole piece is arranged between the upper air cavity and the lower air cavity, and the temperature control method is characterized by comprising the following steps of:

acquiring the actual temperature of a coating surface of a battery pole piece, and comparing the actual temperature value of the coating surface of the pole piece with a preset calibration temperature of the coating surface of the battery pole piece to obtain a first temperature difference value;

obtaining the calibration temperature of the static pressure cavity according to the first temperature difference value and a preset first conversion rule;

acquiring the actual temperature of the static pressure cavity, and comparing the actual temperature of the static pressure cavity with the calibration temperature of the static pressure cavity to obtain a second temperature difference value;

2. The method for controlling temperature according to claim, wherein the obtaining a calibration temperature of the hydrostatic pocket according to the first temperature difference value and a preset first conversion rule comprises:

obtaining the calibration temperature of the upper air cavity according to the first temperature difference value and a preset first conversion rule;

acquiring the actual temperature of the upper air cavity, and comparing the actual temperature of the upper air cavity with the calibration temperature of the upper air cavity to obtain a third temperature difference value;

3. The temperature control method according to claim 2, wherein the obtaining a preset calibration temperature of the windward cavity according to the first temperature difference value and a preset first conversion rule includes:

obtaining a calibration temperature between the air nozzles of the upper air cavity according to the first temperature difference value and a preset first conversion rule;

acquiring the actual temperature between the upper air cavity air nozzles, and comparing the actual temperature between the upper air cavity air nozzles with the calibrated temperature between the upper air cavity air nozzles to obtain a fourth temperature difference value;

4. The temperature control method according to claim 2, further comprising:

obtaining the calibration temperature of the lower wind cavity according to the calibration temperature of the upper wind cavity and the preset temperature ratio between the upper wind cavity and the lower wind cavity;

acquiring the actual temperature of the lower air cavity to obtain the actual temperature ratio of the upper air cavity to the lower air cavity;

judging whether the actual temperature ratio of the upper air cavity body to the lower air cavity body is constant with a preset temperature ratio or not;

if the temperature of the upper air cavity and the lower air cavity is not constant, adjusting the flow of the heater, and adjusting the valve opening degree of the first valve and the second valve to keep the actual temperature ratio of the upper air cavity and the lower air cavity constant with a preset temperature ratio, or adjusting the opening degree of the second valve to keep the actual temperature ratio of the upper air cavity and the lower air cavity constant with a preset temperature ratio;

5. A temperature control method for the oven according to any one of claims 1 to 4, characterized in that it comprises:

acquiring the actual temperature of the coating surface of the battery pole piece, and comparing the actual temperature value of the coating surface of the pole piece with the preset calibration temperature of the coating surface of the battery pole piece to obtain a fifth temperature difference value;

obtaining the calibration temperature of the upper air cavity according to the fifth temperature difference value and a preset fourth conversion rule;

acquiring the actual temperature of the upper air cavity, and comparing the actual temperature of the upper air cavity with the calibration temperature of the upper air cavity to obtain a sixth temperature difference value;

6. The temperature control method according to claim 5, wherein the obtaining of the calibration temperature of the upper wind cavity according to the fifth temperature difference value and a preset fourth conversion rule comprises:

obtaining a calibration temperature between the air nozzles of the upper air cavity according to the fifth temperature difference value and a preset fourth conversion rule;

acquiring the actual temperature between the upper air cavity air nozzles, and comparing the actual temperature between the upper air cavity air nozzles with the calibrated temperature between the upper air cavity air nozzles to obtain a seventh temperature difference value;

7. The temperature control method according to claim 6, further comprising:

if the temperature of the upper air cavity and the lower air cavity is not constant, the flow of the heater is adjusted, and the valve opening degrees of the first valve and the second valve are adjusted, so that the actual temperature ratio of the upper air cavity and the lower air cavity is kept constant with a preset temperature ratio, or the opening degree of the second valve is adjusted, so that the actual temperature ratio of the upper air cavity and the lower air cavity is kept constant with a preset temperature ratio;

8. An oven, comprising:

an upper air cavity;

the lower air cavity is symmetrically arranged below the upper air cavity, and a battery pole piece is arranged between the upper air cavity and the lower air cavity;

the static pressure cavity is communicated with the upper air cavity through a first valve and is communicated with the lower air cavity through a second valve;

the heater is communicated with the static pressure cavity and used for supplying heat to the static pressure cavity;

the first temperature sensor is arranged on the coating surface of the battery pole piece and used for detecting the actual temperature of the coating surface of the battery pole piece;

the second temperature sensor is arranged in the static pressure cavity and used for detecting the actual temperature in the static pressure cavity;

the first temperature conversion module is electrically connected with the first temperature sensor and the second temperature sensor and used for obtaining the calibration temperature of the static pressure cavity according to a first temperature difference between the actual temperature of the coating surface of the battery pole piece and the preset calibration temperature of the coating surface of the battery pole piece and a preset first conversion rule and obtaining a second temperature difference value between the actual temperature of the static pressure cavity and the calibration temperature of the static pressure cavity;

and the temperature controller comprises a first control module electrically connected with the temperature conversion unit and the heater, and the first control module is suitable for adjusting the heating flow of the heater according to the second temperature difference value, so that the temperature adjustment increment of the static pressure cavity to the upper air cavity is equal to the second temperature difference value, and the actual temperature of the upper air cavity is adjusted to be equal to the calibrated temperature of the upper air cavity.

9. An electronic device comprising a processor and a memory, the memory storing computer readable instructions that, when executed by the processor, perform the method of any of claims 1 to 7.

10. A readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.