TWI515525B - Circuit and method for temperature control and charging system - Google Patents

Description

Temperature control circuit, temperature control method, and charging system

The present invention relates to a control circuit, and more particularly to a temperature control circuit, a temperature control method, and a charging system.

Charging systems (eg, electric vehicle chargers), particularly sealed charging systems that do not have a fan, can be damaged in the event of overheating. Therefore, when designing the charging system, it is necessary to consider the charging efficiency of the charging system and the balance between heat generation and heat dissipation. The temperature control method of the conventional charging system mainly includes a temperature switch control method and a segmentation threshold control method. The conventional temperature switch control method controls the temperature of the charging system using a switch coupled between the power module and the temperature sensor. When the temperature sensor indicates that the temperature of the charging system reaches the over temperature threshold, the power module of the charging system is controlled to stop the output power through the disconnect switch, thereby causing the temperature of the charging system to slow down or stop rising. The conventional segmentation threshold control method may set a plurality of power levels (eg, a first power level and a second) corresponding to a plurality of temperature thresholds (eg, a first temperature threshold and a second temperature threshold) Power level). When the charging system starts to work, the power module outputs at a rated power; when the temperature sensor indicates that the temperature of the charging system reaches the first temperature threshold, the power module has a first power level lower than the rated power (for example, 50% of rated power output; when the temperature sensor indicates that the temperature of the charging system reaches the second temperature threshold, the power module has a second power level lower than the first power level (for example, 25% of the rated power) Or 0 watts) output, which in turn causes the temperature of the charging system to slow down or stop rising. The second temperature threshold is greater than the first temperature threshold. The above two temperature control methods adjust the output power by monitoring the temperature of the charging system, and cannot flexibly adjust the output power of the charging system, thereby causing the charging efficiency to be low.

It is an object of the present invention to provide a temperature control circuit comprising: a Receiving a temperature value from a sensor, comparing the temperature value with a thermal equilibrium threshold temperature, a maximum use temperature, and a recovery temperature, respectively, to generate a corresponding judgment result; a calculation unit coupled Up to the determining unit, calculating an output power according to the determination result; and a setting unit coupled to the calculating unit, generating a voltage setting value and a current setting value corresponding to the output power, and setting the voltage setting value And the current setting value is transmitted to a power module.

The invention also provides a temperature control method, comprising: receiving a temperature value from a sensor; comparing the temperature value with a heat balance threshold temperature, a maximum use temperature, and a recovery temperature, respectively, to generate a corresponding one Determining a result; calculating an output power in real time according to the judgment result; and generating a voltage setting value and a current setting value corresponding to the output power, and transmitting to a power module.

The present invention also provides a charging system comprising: a sensor for sensing and transmitting a temperature value; a control module coupled to the sensor for receiving the temperature value, and a thermal equilibrium threshold according to the temperature value a comparison result of the value temperature, a maximum use temperature, and a recovery temperature, instantaneously calculating an output power, and generating a voltage setting value and a current setting value corresponding to the output power; and a power module coupled to the The control module receives the voltage setting value and the current setting value, and performs a charging operation according to the voltage setting value and the current setting value.

100‧‧‧Charging system

102‧‧‧ sensor

104‧‧‧Control Module

106‧‧‧Power Module

202‧‧‧judging unit

204‧‧‧Computation unit

206‧‧‧Setting unit

500‧‧‧flow chart

502~528‧‧‧Steps

600‧‧‧ Flowchart

602~610‧‧‧Steps

The technical method of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to make the features and advantages of the present invention more obvious. 1 is a block diagram showing the structure of a charging system according to an embodiment of the invention; FIG. 2 is a block diagram showing the result of a control module according to an embodiment of the invention; Schematic diagram of changes in output power and temperature during temperature control of an embodiment; FIG. 4 is a schematic diagram showing changes in output power and temperature during temperature control according to another embodiment of the present invention; 5 is a flow chart showing a temperature control method according to an embodiment of the present invention; and FIG. 6 is a flow chart showing a temperature control method according to another embodiment of the present invention.

A detailed description of the embodiments of the present invention will be given below. While the invention will be described in conjunction with the embodiments, it is understood that the invention is not limited to the embodiments. Rather, the invention is to cover various modifications, equivalents, and equivalents of the invention as defined by the scope of the appended claims.

In addition, in the following detailed description of the embodiments of the invention However, it will be understood by those of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail in order to facilitate the invention.

1 is a block diagram showing the structure of a charging system 100 in accordance with an embodiment of the present invention. The charging system 100 can be any type of charging system, such as a charger for an electric vehicle and/or a hybrid vehicle, and the invention is not limited thereto. The charging system 100 includes a sensor 102, a control module 104, and a power module 106. The sensor 102 senses the temperature (eg, the internal temperature of the inductive charging system 100) and transmits the sensed temperature value T to the control module 104. In an embodiment, the sensor 102 may include a thermistor (for example, a negative temperature coefficient thermistor NTC) and a digital temperature sensor coupled to the thermistor, and the digital temperature sensor converts the temperature physical value. It is a temperature digital value. The control module 104 is coupled to the sensor 102, receives the temperature value T, calculates the output power instantaneously according to the received temperature value T, and generates a voltage setting value _Vset and a current setting value _Iset corresponding to the output power. The power module 106 is coupled to the control module 104, receives the voltage setting value V _set and the current set value I _set, and according to the voltage setting value V _set and the current set value I _set provide power to a battery (not shown), Perform a charging operation.

FIG. 2 is a block diagram showing the structure of a control module 104 according to an embodiment of the invention. Figure 2 will be described in conjunction with Figure 1. As described above, the control module 104 receives the temperature value T, calculates the output power instantaneously based on the received temperature value T, and generates a voltage setting value _Vset and a current setting value _Iset corresponding to the output power. The control module 104 includes a determination unit 202, a calculation unit 204, and a setting unit 206. The judging unit 202 receives the temperature value T from the sensor 102 and generates a corresponding judgment result based on the temperature value T. The determining unit 202 can compare the temperature value T with the heat balance threshold temperature, the maximum use temperature, and the recovery temperature, respectively. The thermal balance threshold temperature, the maximum use temperature, and the recovery temperature are stored in a memory (eg, EEPROM or Flash) of the determination unit 202 (not shown in FIG. 2). The thermal equilibrium threshold temperature, maximum operating temperature, and recovery temperature are 75 degrees Celsius, 100 degrees Celsius, and 65 degrees Celsius, respectively. Those skilled in the art will appreciate that the thermal equilibrium threshold temperature, the maximum use temperature, and the recovery temperature may also be set to other values, such as 75 degrees Celsius, 85 degrees Celsius, and 75 degrees Celsius, depending on the application requirements, and the present invention is not limited thereto. .

Specifically, when receiving the temperature value T from the sensor 102, the determination unit 202 compares the temperature value T with the thermal equilibrium threshold temperature (for example, 75 degrees Celsius). If the temperature value T is less than or equal to the thermal equilibrium threshold temperature, the determination result of the determining unit 202 is that the control module 104 does not need to perform thermal balance control. In this case, the output power calculated by the calculation unit 204 in real time is the rated power. For example, the corresponding output power, that is, the rated power, when the temperature value T is less than or equal to the thermal equilibrium threshold temperature can be found according to the lookup table stored in the calculation unit 204. The setting unit 206 generates a voltage setting value V _set and a current setting value I _set corresponding to the rated power. For example, the voltage setting value V _set and the current setting value I _set corresponding to the rated power may be found according to the lookup table stored in the setting unit 206, so that the power module 106 outputs the rated power. If the temperature value T is greater than the thermal equilibrium threshold temperature, the determination result of the determining unit 202 is that the control module 104 needs to perform thermal balance control. In this case, the calculation unit 204 coupled to the determination unit 202 calculates the output power on the basis of the determination result. Specifically, it is assumed that the sampling time interval of the sensor 102 is the unit time ti, between the temperature value T(t+ti) of the sampling time point t+ti and the temperature value T(t) of the last sampling time point t. The difference (i.e., T(t + ti) - T(t)) is defined as the amount of change ΔT of the temperature value T per unit time. If the amount of change ΔT is greater than 0, it means that the temperature increases; if the amount of change ΔT is less than 0, it means that the temperature drops; if the amount of change ΔT is equal to 0, it means that the temperature does not change. The calculation unit 204 can instantaneously adjust the output power according to the amount of change ΔT of the temperature value T. That is, when the amount of change ΔT approaches zero, that is, the temperature value T remains substantially constant, the charging system 100 enters a temperature equilibrium state. In this case, the control module 104 suspends the thermal balance control. When the thermal balance control is suspended, the power module 106 will maintain the output power before the pause and the corresponding voltage set value _Vset and current set value _Iset . The calculation method for the calculation unit 204 will be described in detail in FIG.

After the calculation unit 204 calculates the new output power needs to be adjusted (e.g., adjusted to half of the original output power), coupled to the calculating means setting unit 204 is 206 generates corresponding to the new power output voltage setting value V _set and Current setting value I _set . In an embodiment of the invention, the voltage setting value _Vset provided by the power module 106 of the charging system 100 to the battery (not shown in FIG. 1) remains constant. In an embodiment of the invention, "substantially constant" means that the voltage set value _Vset may vary slightly (e.g., by external ambient temperature), but remains within a suitable range of variation. In this case, corresponding to the new output power, the setting unit 206 sets a new current set value _Iset while keeping the voltage set value _Vset substantially constant. In another embodiment of the invention, the voltage setting value _Vset provided by the power module 106 of the charging system 100 to the battery (not shown in FIG. 1) may vary. In this case, the setting unit 206 sets a new voltage setting value _Vset and a new current setting value _Iset corresponding to the new output power.

Further, the judging unit 202 can also compare the temperature value T with the highest use temperature (for example, 100 degrees Celsius). If the temperature value T rises to (greater than or equal to) the maximum use temperature, the judgment result of the judgment unit 202 is that an over temperature condition occurs. In this case, the calculation unit 204 calculates the output power instantaneously at 0 watts. For example, the corresponding output power when the temperature value T is greater than or equal to the maximum use temperature may be found according to the lookup table stored in the calculation unit 204. The setting unit 206 generates a voltage setting value _Vset and a current setting value _Iset corresponding to an output power of 0 watts. For example, a lookup table stored in the setting unit 206, to find out when the output power is 0 watts voltage setting corresponding to the setting value V _set and the current I _set, thereby enabling the power output of the power module 106 is stopped, thereby enabling the temperature value T gradually Reduced. Then, the judging unit 202 can further compare the temperature value T with the recovery temperature (for example, 65 degrees Celsius). If the temperature value T falls below or equal to the recovery temperature, the judgment unit 202 determines that the normal condition has been restored. In this case, the output power calculated by the calculation unit 204 is the rated power. For example, the corresponding output power when the temperature value T is less than or equal to the recovery temperature can be found according to the lookup table stored in the calculation unit 204, that is, the rated power. power. The setting unit 206 generates a voltage setting value V _set and a current setting value I _set corresponding to the rated power. For example, the voltage setting value V _set and the current setting value I _set corresponding to the rated power may be found according to the lookup table stored in the setting unit 206, so that the power module 106 restores the output rated power.

3 is a schematic diagram showing changes in output power and temperature during temperature control according to an embodiment of the present invention. Figure 3 will be described in conjunction with Figures 1 and 2. At time t0, charging system 100 begins to operate. For example, power module 106 provides rated power to the battery (not shown in FIG. 1) for charging. The charging system 100 dissipates heat during charging, and the temperature value T gradually increases. At time t1, the temperature value T increases to a thermal equilibrium threshold temperature (eg, 75 degrees Celsius), and the control module 104 begins thermal balance control. However, in another embodiment of the present invention, even if the temperature value T has not increased to the thermal equilibrium threshold temperature, once the amount of change ΔT of the temperature value T is greater than a preset temperature variation threshold (ie, the temperature value T) The control module 104 can also perform thermal balance control, more details of which will be described in FIG.

Specifically, during the time period from the time point t1 to the time point t2, the control module 104 can calculate the output power instantaneously according to the equation (1): ΔP=-a*Δ T +d (a>0) (1) Wherein, as described above, the sampling time interval of the sensor 102 is the unit time ti, the temperature value T(t+ti) of the sampling time point t+ti and the temperature value T(t) of the last sampling time point t The difference between (i.e., T(t + ti) - T(t)) is defined as the amount of change ΔT of the temperature value T per unit time. Correspondingly, ΔP represents the amount of change in the output power P per unit time (ie, P(t+ti)-P(t)). Further, the amount of change ΔP of the output power P per unit time is inversely proportional to the amount of change ΔT of the temperature value T (for example, in a linear inverse relationship). If the temperature value T increases (that is, the amount of change ΔT of the temperature value T is positive), the control module 104 decreases the output power P (ie, the amount of change ΔP of the output power is negative). If the temperature value T decreases (that is, the amount of change ΔT of the temperature value T is negative), the control module 104 increases the output power P (that is, the amount of change ΔP of the output power is positive). And if the temperature value T is constant (that is, the amount of change ΔT of the temperature value T is zero), the control module 104 keeps the output power P substantially constant (that is, the amount of change ΔP of the output power is substantially zero). According to different application requirements, the relationship between the temperature value T and the output power P of the parameter a and the parameter d of the linear function can be appropriately set. In another embodiment of the present invention, the control module 104 can also calculate the output power in real time according to equation (2): Wherein, the P _amount represents the rated power, T _max represents the highest use temperature, and T _recovery represents the recovery temperature.

As can be seen from FIG. 3, as the temperature value T increases, the output power P decreases continuously, and the increase in the temperature value T becomes more and more gradual. In the period between time t2 and time point t3, the amount of change ΔT of the temperature value T in any one unit time approaches 0, that is, the temperature value T remains substantially constant, and the charging system 100 enters the temperature equilibrium state. Correspondingly, during the time period from time t2 to time t3, the control module 104 suspends the thermal balance control, and the power module 106 will maintain the output power before the pause. At time t3, the temperature value T begins to decrease, that is, the charging system 100 loses temperature balance, and the control module 104 begins thermal balance control. During the time period from the time point t3 to the time point t4, the control module 104 can calculate the output power instantaneously according to the equation (1) or the equation (2), and continuously increase the output power P.

In the period between time point t4 and time point t5, the amount of change ΔT of the temperature value T in any one unit time approaches 0, that is, the temperature value T remains substantially constant, and the charging system 100 enters the temperature balance state. Correspondingly, during the time period from time t4 to time t5, the control module 104 suspends the thermal balance control, and the power module 106 will maintain the output power before the pause. At time t5, the temperature value T begins to increase, that is, the charging system 100 loses temperature balance, and the control module 104 begins thermal balance control. During the period between time point t5 and time point t6, the control module 104 can calculate the output power instantaneously according to equation (1) or equation (2), and continuously reduce the output power P.

In the period between time t6 and time point t7, the change amount ΔT of the temperature value T in any one unit time approaches 0, that is, the temperature value T remains substantially constant. The charging system 100 enters a temperature equilibrium state. Correspondingly, during the time period from time t6 to time t7, the control module 104 suspends the thermal balance control, and the power module 106 will maintain the output power before the pause. At time t7, the sensor temperature value T begins to decrease, ie, the charging system 100 loses temperature balance, and the control module 104 begins thermal balance control. During the period between time point t7 and time point t8, the control module 104 can calculate the output power instantaneously according to equation (1) or equation (2), and continuously increase the output power P. At time point t8, the temperature value T decreases to a thermal equilibrium threshold temperature (eg, 75 degrees Celsius), and the control module 104 does not need to perform thermal balance control and restore the output power P to the rated power.

Those skilled in the art will appreciate that equation (1) or equation (2) is not a limitation of the present invention. In other embodiments, control module 104 may also be based on other equations different from equation (1) or equation (2) ( For example, a quadratic function, etc.) calculates the output power on the fly.

4 is a schematic diagram showing changes in output power and temperature during temperature control according to another embodiment of the present invention. Figure 4 will be described in conjunction with Figures 1 and 3. Although in the example of FIG. 4, the highest use temperature is greater than the thermal equilibrium threshold temperature and the thermal equilibrium threshold temperature is greater than the recovery temperature, in other examples, the thermal equilibrium threshold temperature may be equal to the recovery temperature, and the present invention does not limit. In the period between time point t9 and time point t10, the temperature value T is greater than the heat balance threshold temperature, and the amount of change ΔT of the temperature value T in any one unit time between the time point t9 and the time point t10 Approaching zero (i.e., the temperature value T remains substantially constant), the charging system 100 is in a temperature equilibrium state. Correspondingly, during the time period from time t9 to time t10, the control module 104 suspends the thermal balance control, and the power module 106 will maintain the output power before the pause. At time t10, the temperature value T begins to increase, that is, the charging system 100 loses temperature balance, and the control module 104 begins thermal balance control. During the period between time point t10 and time point t11, the control module 104 can calculate the output power instantaneously according to equation (1) or equation (2), and continuously reduce the output power P. At time t11, the temperature value T is increased to the highest use temperature (for example, 100 degrees Celsius), and the control module 104 causes the power module 106 to stop outputting power, that is, the output power P is reduced to zero. Sensor temperature due to stopping output power The degree value T gradually decreases. At time t12, the temperature value T falls to the recovery temperature (eg, 65 degrees Celsius), the control module 104 causes the power module 106 to resume output rated power, and the temperature value T begins to increase. After time point t12, since the temperature value T is less than the thermal equilibrium threshold temperature, the control module 104 does not need to perform thermal balance control.

FIG. 5 is a flow chart of a temperature control method 500 in accordance with an embodiment of the present invention. Figure 5 will be described in conjunction with Figures 1 through 4. The specific steps covered in Figure 5 are merely examples. That is, the present invention is applicable to other reasonable processes or steps for improving FIG.

In step 502, the temperature value T is immediately sampled by a sensor (eg, sensor 102).

In step 504, the control module (eg, control module 104) determines if the temperature value T is greater than a thermal equilibrium threshold temperature (eg, 75 degrees Celsius). If the temperature value T is greater than the thermal equilibrium threshold temperature, then proceed to step 508; otherwise, the flow proceeds to step 506.

In step 506, charging system 100 outputs the rated power. Then return to step 502 to continue sampling the temperature value T immediately.

In step 508, charging system 100 reduces the output power. Then jump to step 510.

In step 510, the control module 104 determines whether the charging system 100 enters a temperature equilibrium state, for example, by determining whether the amount of change ΔT of the temperature value T within a unit time (eg, the sampling time interval ti of the sensor) approaches 0. If the charging system 100 does not enter the temperature equilibrium state, then return to step 502 to continue sampling the temperature value T immediately. Otherwise, proceed to step 512.

In step 512, control module 104 suspends thermal balance control, and control module 104 controls charging system 100 to maintain output power prior to suspension.

In step 514, control module 104 continues to detect if temperature value T has changed. If there is no change, then return to step 512. On the other hand, if the temperature value T changes, the process proceeds to step 516.

In step 516, it is judged that the temperature value T is getting larger or smaller. If temperature If the value T becomes larger, the process proceeds to step 518; if the temperature value T becomes smaller, the process proceeds to step 524.

In step 518, it is determined whether the temperature value T is greater than or equal to the highest usage temperature (eg, 100 degrees Celsius). If the temperature value T is greater than or equal to the highest usage temperature, then jump to step 520; otherwise, return to step 508 to further reduce the output power.

In step 520, control module 104 controls charging system 100 to stop power output.

In step 522, it is determined whether the temperature value T is less than or equal to the recovery temperature (eg, 65 degrees Celsius). If the temperature value T is less than or equal to the recovery temperature, then return to step 506, the charging system 100 outputs the rated power; otherwise, returning to step 520, the control module 104 continues to control the charging system 100 to stop the power output.

In step 524, it is determined whether the temperature value T is less than or equal to the thermal equilibrium threshold temperature (eg, 75 degrees Celsius). If the temperature value T is less than or equal to the thermal equilibrium threshold temperature, heat balance control is not required, and returning to step 506, the charging system 100 outputs the rated power; otherwise, the process proceeds to step 526.

In step 526, charging system 100 increases the output power.

In step 528, the control module 104 determines whether the temperature of the charging system 100 has entered a temperature equilibrium state (eg, by determining whether the amount of change ΔT of the temperature value T per unit time approaches 0). If the charging system 100 does not enter the temperature equilibrium state, then return to step 526 to further increase the output power; otherwise, return to step 512, the control module 104 suspends the thermal balance control, and the control module 104 controls the charging system 100 to maintain the output power before the pause. .

6 is a flow chart of a temperature control method 600 in accordance with another embodiment of the present invention. FIG. 6 will be described in conjunction with FIGS. 1 through 4, and the temperature control method 600 shown in FIG. 6 can be used in combination with the temperature control method 500 shown in FIG.

In step 602, the temperature value T is immediately sampled by a sensor (eg, sensor 102).

In step 604, the control module (for example, the control module 104) determines whether the amount of change ΔT of the temperature value T within a unit time (for example, the sampling time interval ti of the sensor) is greater than a preset temperature change amount. Limit. If the temperature value T changes by ΔT The temperature change amount threshold indicates that the temperature value T changes rapidly, and the control module 104 needs to perform thermal balance control to instantly adjust the output power according to the change amount ΔT of the temperature value T. If the amount of change ΔT of the temperature value T is smaller than the temperature change amount threshold, the process proceeds to step 606; otherwise, the process proceeds to step 608.

In step 606, charging system 100 maintains output power.

In step 608, charging system 100 calculates the power ΔP that needs to be reduced.

In step 610, the control module 104 adjusts the output power P based on the calculated reduced power ΔP. Then, returning to step 602, the sensor continues to sample the temperature value T immediately.

As described above, the embodiment of the present invention discloses a temperature control circuit, a temperature control method, and a charging system. Advantageously, the temperature control circuit, the temperature control method and the charging system provided by the present invention can flexibly adjust the output power of the charging system according to the temperature value, thereby avoiding the occurrence of overheating and improving the efficiency of the charging system.

The above detailed description and the accompanying drawings are only typical embodiments of the invention. It is apparent that various additions, modifications and substitutions are possible without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood by those of ordinary skill in the art that the present invention may be in the form of the form, structure, arrangement, ratio, material, element, element and other aspects in the actual application without departing from the invention. Changed. Therefore, the embodiments disclosed herein are intended to be illustrative and not limiting, and the scope of the invention is defined by the scope of the appended claims and their legal equivalents.

104‧‧‧Control unit

202‧‧‧judging unit

204‧‧‧Computation unit

206‧‧‧Setting unit

Claims (26)

A temperature control circuit includes: a judging unit that receives a temperature value from a sensor, and compares the temperature value with a thermal equilibrium threshold temperature, a maximum use temperature, and a recovery temperature, respectively, to generate a corresponding one a calculation unit, coupled to the determination unit, and calculating an output power according to the determination result; and a setting unit coupled to the calculation unit to generate a voltage setting value and a current setting value corresponding to the output power And transmitting the voltage setting value and the current setting value to a power module, wherein the determining unit compares a change amount of the temperature value in a unit time and a predetermined temperature change amount threshold, if The amount of change in the temperature value is greater than the predetermined temperature change amount threshold, and the calculation unit instantaneously adjusts the output power based on the determination result and the amount of change in the temperature value. The temperature control circuit of claim 1, wherein the voltage setting value is kept constant. The temperature control circuit of claim 1, wherein if the temperature value is greater than the thermal equilibrium threshold temperature, the calculation unit adjusts the current value according to the determination result and a change amount of the temperature value in a unit time. Output Power. The temperature control circuit of claim 1 or 3, wherein the amount of change in the output power per unit time is inversely proportional to the amount of change in the temperature value. The temperature control circuit of claim 4, wherein the calculation unit decreases the output power if the temperature value increases; if the temperature value decreases, The calculation unit increases the output power; if the temperature value does not change, the calculation unit keeps the output power unchanged. The temperature control circuit of claim 4, wherein the amount of change in the output power per unit time is inversely proportional to the amount of change in the temperature value. The temperature control circuit of claim 1, wherein the setting unit causes the power module to output a rated power if the temperature value is less than or equal to the thermal equilibrium threshold temperature. The temperature control circuit of claim 1, wherein the setting unit causes the power module to stop outputting power if the temperature value is greater than or equal to the maximum use temperature. The temperature control circuit of claim 8, wherein the determining unit compares the temperature value with the recovery temperature, and if the temperature value is less than or equal to the recovery temperature, the setting unit causes the power module to output a rated power. The temperature control circuit of claim 1, wherein the maximum use temperature is greater than the heat balance threshold temperature. The temperature control circuit of claim 1, wherein the heat balance threshold temperature is greater than or equal to the recovery temperature. A temperature control method includes: receiving a temperature value from a sensor; comparing the temperature value with a heat balance threshold temperature, a maximum use temperature, and a recovery temperature, respectively, to generate a corresponding judgment result; The determination result instantly calculates an output power; generates a voltage setting value and a current setting value corresponding to the output power, and transmits the same to a power module; Comparing a change amount of the temperature value in a unit time with a predetermined temperature change amount threshold; and if the change amount of the temperature value is greater than the predetermined temperature change amount threshold, according to the judgment result and the This amount of change in the temperature value instantly adjusts the output power. The temperature control method of claim 12, wherein the voltage setting value is kept constant. The temperature control method of claim 12, wherein the step of calculating the output power according to the judgment result further comprises: if the temperature value is greater than the heat balance threshold temperature, according to the determination result and a unit time A change in the temperature value instantaneously adjusts the output power. The temperature control method of claim 12 or 14, wherein the amount of change in the output power per unit time is inversely proportional to the amount of change in the temperature value. The temperature control method of claim 15, wherein if the temperature value is increased, the output power is decreased; if the temperature value is decreased, the output power is increased; and if the temperature value is unchanged, Then keep the output power unchanged. The temperature control method of claim 12, wherein the step of calculating the output power based on the determination result comprises: if the temperature value is less than or equal to the thermal equilibrium threshold temperature, the power module outputs a rated power. The temperature control method of claim 12, wherein the step of calculating the output power according to the judgment result further comprises: if the temperature value is greater than or equal to the maximum use temperature, the power module stops outputting power; If the temperature value is less than or equal to the recovery temperature, the power module outputs a rated power. A charging system includes: a sensor that senses and transmits a temperature value; a control module coupled to the sensor to receive the temperature value, according to the temperature value and a thermal equilibrium threshold temperature, a maximum Using a comparison result of the temperature and a recovery temperature, calculating an output power instantaneously, and generating a voltage setting value and a current setting value corresponding to the output power; and a power module coupled to the control module to receive the a voltage setting value and the current setting value, and performing a charging operation according to the voltage setting value and the current setting value, wherein the control module comprises: a determining unit, receiving the temperature value and respectively respectively respectively the temperature value The threshold temperature, the maximum use temperature, and the recovery temperature are compared to generate a corresponding judgment result; a calculation unit coupled to the determination unit, and the output power is immediately calculated according to the determination result; and a setting unit coupled To the computing unit, generating the voltage setting value and the current setting value, and transmitting the voltage setting value and the current setting value to Power modules. The charging system of claim 19, wherein the sensor comprises a thermistor and a digital temperature sensor coupled to the thermistor. The charging system of claim 19, wherein the charging operation is to supply power to a battery through the charging system. Such as the charging system of claim 19, wherein the voltage setting value keep constant. The charging system of claim 19, wherein the control module controls the power module to output a rated power if the temperature value is less than or equal to the thermal equilibrium threshold temperature. The charging system of claim 19, wherein if the temperature value is greater than the thermal equilibrium threshold temperature, the control module instantaneously adjusts the output power according to a change amount of the temperature value in a unit time. The charging system of claim 19, wherein the control module controls the power module to stop outputting power if the temperature value is greater than or equal to the maximum usage temperature. The charging system of claim 19, wherein the control module controls the power module to resume outputting a rated power if the temperature value is less than or equal to the recovery temperature.