A temperature control method for a temperature control structure

Abstract

The present invention relates to a temperature control method for a temperature control structure, which includes a heating plate and a temperature sensor, and comprises the following steps: setting the heating temperature as Tn, and the temperature sensor detecting the current temperature of the heating plate as T0; calculating t1 through a temperature control formula, then after the heating plate heats for t1 time, the temperature sensor detects the current temperature of the heating plate as T1; calculating t2 through the temperature control formula, then after the heating plate heats for t2 time, the temperature sensor detects the current temperature of the heating plate as T2;... calculating tn-1 through the temperature control formula, then after the heating plate heats for tn-1 time, the temperature sensor detects the current temperature of the heating plate as Tn-1, making Tn-1 infinitely close to Tn. The above temperature control method for the temperature control structure can continuously heat the heating plate, enabling the temperature of the heating plate to always approach the set temperature and not exceed the set temperature, so that the temperature of the heating plate can be maintained within a certain range, thereby achieving the temperature control effect, and this method can be adapted to different usage environments.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a temperature control method for a temperature control structure. Background Art

[0002] Lithium batteries have been widely used in various industries due to their unique performance advantages such as high voltage, high specific energy, many cycle usage times, and long storage time. The battery cells of lithium batteries must be hot-pressed and formed before being put into the shell. However, hot-pressing and forming requires controlling its temperature, and the generally common temperature control method is:

[0003] T n = T0 + (I 2 *R*t) / (M*C) - T R -T E (where t is the feedback value)

[0004] It directly controls the on / off of the heating element according to the feedback signal of the temperature control sensor, and its heating temperature / time curve is generally as Figure 1 shown. This method has the problem that the heating temperature continuously heats until it reaches the set temperature when approaching the set temperature. This method is only applicable to heating fluids or occasions with generally low requirements for temperature stability. When the heating substance is a solid or a gas, due to factors such as density, there are heat conduction efficiency and thermal resistance, and it is easy to generate the phenomenon of temperature overshoot. Moreover, when the temperature stabilizes again, its actual temperature will continuously fluctuate up and down around the set temperature, and the temperature is maintained within a certain range in a short time. Summary of the Invention

[0005] The main purpose of the present invention is to provide a temperature control method for a temperature control structure to solve the above technical problems, so that the heating plate continuously heats and ensures that the temperature of the heating plate is maintained within a certain range.

[0006] To achieve the above purpose, the present invention adopts the following technical scheme:

[0007] A temperature control method for a temperature control structure, including a heating plate and a temperature sensor, comprising the following steps:

[0008] S1. Set the heating temperature as T n , and the temperature sensor detects that the current temperature of the heating plate is T0;

[0009] S2. Calculate t1 through the temperature control formula. After the heating plate heats for t1 time, the temperature sensor detects that the current temperature of the heating plate is T1;

[0010] S3. Calculate t2 through the temperature control formula. After the heating plate heats for t2 time, the temperature sensor detects that the current temperature of the heating plate is T2;...

[0011] Sn-1, and t is calculated through the temperature control formula n-1 , then the heating plate is heated for t n-1 After the time, the temperature sensor detects that the current temperature of the heating plate is T n-1 , making T n-1 infinitely close to T n .

[0012] As a preferred technical solution, the temperature control formula is:

[0013] T n = T0 + (P * t * k * τ * λ) / (M * C) - T R - T E

[0014] In the formula: T n is the temperature after heating; T0 is the temperature before heating; P is the heating power; t is the heating time; λ is the heating system efficiency; k is the heating efficiency; τ is the heat conductivity; M is the heating mass; C is the specific heat; T R is the heat resistance loss; T E is the air heat radiation loss.

[0015] As a preferred technical solution, after the heating plate finishes heating, wait for a stable period of time t x and then the temperature sensor conducts detection.

[0016] The beneficial effect of the present invention is that: the above temperature control structure and temperature control method can continuously heat the heating plate, enabling the temperature of the heating plate to continuously approach the set temperature and not exceed the set temperature, so that the temperature of the heating plate can be maintained within a certain range, thereby achieving the temperature control effect, and this method can be adapted to different usage environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the heating temperature / time curve diagram of the general temperature control method involved in the present invention;

[0018] Figure 2 is the heating temperature / time curve diagram of the temperature control structure and temperature control method involved in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] [Embodiment 1]

[0021] A temperature control structure and temperature control method includes a heating plate and a temperature sensor, and includes the following steps:

[0022] Step 1: Set the heating temperature to T n , and the temperature sensor detects that the current temperature of the heating plate is T0;

[0023] Step 2: Calculate t1 through the temperature control formula. After the heating plate is heated for t1 time, the temperature sensor detects that the current temperature of the heating plate is T1;

[0024] Among them, the temperature control formula is:

[0025] T n = T0+(P*t*k*τ*λ) / (M*C)-T R -T E

[0026] In the formula: T n is the temperature after heating; T0 is the temperature before heating; P is the heating power; t is the heating time; λ is the heating system efficiency, which is a system set value with an initial value of 1.0; k is the heating efficiency, which is a system set value with an initial value of 1.0, and its value is iterated according to the heating stability times cycle; τ is the heat conductivity, which is a system set value with an initial value of 1.0, and its value is iterated according to the heating stability times cycle; M is the heating mass; C is the specific heat; T R is the heat resistance loss, which is a system set value calibrated, and its value is iterated according to the curve curvature cycle; T E is the air heat radiation loss.

[0027] Step 3: Calculate t2 through the temperature control formula. After the heating plate is heated for t2 time, the temperature sensor detects that the current temperature of the heating plate is T2;…

[0028] Step n - 1, calculate t n-1 through the temperature control formula, then after the heating plate is heated for t n-1 time, the temperature sensor detects that the current temperature of the heating plate is T n-1 , so that T n-1 is infinitely close to T n .

[0029] Keep the heating plate in a heated state all the time, and its temperature / time curve will be as shown in Figure 2 ; and because the thermal efficiency and heat loss values are both system calculated values, this heating method will be able to adapt to different usage environments.

[0030] [Example 2]

[0031] A temperature control method for a temperature control structure, including a heating plate and a temperature sensor, includes the following steps:

[0032] Step 1: Set the heating temperature to T n , and the temperature sensor detects that the current temperature of the heating plate is T0;

[0033] Step 2: Calculate t1 through the temperature control formula. After the heating plate is heated for t1 time and stabilized for a period of time t x , the temperature sensor detects that the current temperature of the heating plate is T1;

[0034] Among them, the temperature control formula is:

[0035] T n = T0 + (P * t * k * τ * λ) / (M * C) - T R - T E

[0036] In the formula: T n is the temperature after heating; T0 is the temperature before heating; P is the heating power; t is the heating time; λ is the heating system efficiency, which is a system set value with an initial value of 1.0; k is the heating efficiency, which is a system set value with an initial value of 1.0, and its value is iterated according to the heating stability times cycle; τ is the heat conductivity, which is a system set value with an initial value of 1.0, and its value is iterated according to the heating stability times cycle; M is the heating mass; C is the specific heat; T R is the heat resistance loss, which is a system set value calibrated, and its value is iterated according to the curve curvature cycle; T E is the air heat radiation loss.

[0037] Step 3: Calculate t2 through the temperature control formula. After the heating plate is heated for t2 time and stabilized for a period of time t x , the temperature sensor detects that the current temperature of the heating plate is T2; …

[0038] Step n - 1, calculate t through the temperature control formula n-1 , then after the heating plate is heated for t n-1 time, the temperature sensor detects that the current temperature of the heating plate is T n-1 , so that T n-1 is infinitely close to T n .

[0039] If the heating plate is always in the heated state, its temperature / time curve will be as Figure 2 shown; and because the thermal efficiency and heat loss values are both system calculated values, this heating method will be able to adapt to different usage environments.

[0040] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the patent application of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. A temperature control method for a temperature control structure, characterized in that, It includes a heating plate and a temperature sensor, and comprises the following steps: S1. Set the heating temperature to T n , and the temperature sensor detects that the current temperature of the heating plate is T0; S2. Calculate t1 through the temperature control formula. After the heating plate heats for t1 time, the temperature sensor detects that the current temperature of the heating plate is T1; S3. Calculate t2 through the temperature control formula. After the heating plate heats for t2 time, the temperature sensor detects that the current temperature of the heating plate is T2;... Sn-1, and t is calculated through the temperature control formula n-1 , then the heating plate heats for t n-1 After the time, the temperature sensor detects that the temperature of the current heating plate is T n-1 , making T n-1 Infinitely close to T n ; The temperature control formula is: T n = T0 + (P * t * k * τ * λ) / (M * C) - T R -T E Where: T n is the temperature after heating; T0 is the temperature before heating; P is the heating power; t is the heating time; λ is the heating system efficiency; k is the heating efficiency; τ is the heat conductivity; M is the heating mass; C is the specific heat; T R is the heat resistance loss; T E is the air heat radiation loss; After the heating plate finishes heating, wait for a period of time t to stabilize. x After that, the temperature sensor performs detection again.

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