Charging control circuit and electronic atomization device

Abstract

The application provides a charging control circuit and an electronic atomization device. The charging control circuit comprises a charging chip, at least one charging setting path and a control chip. The first charging setting path is arranged between the adjustment voltage terminal and the charging current setting terminal. The control chip controls the size of the adjustment voltage to change the first charging setting current flowing through the first charging setting path, so as to adjust the charging setting current flowing through the charging current setting terminal, thereby adjusting the charging current output by the charging connection terminal, reducing the charging current tolerance and improving the consistency of the charging duration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging design, in particular to a charging control circuit and an electronic atomization device. BACKGROUND

[0002] The existing charging scheme of the electronic atomization device mainly adopts a linear charging chip or a switching type charging chip to realize the charging function. Due to the chip process design problem, the current configuration related voltage has a tolerance of about 10%, for example, the standard value of the current configuration related voltage is 1V, and the current configuration related voltage in the actual charging process is 0.9V-1.1V. Thus, when we configure the current through the resistor, the charging current also has a tolerance of 10%, which leads to poor consistency of the charging time. SUMMARY

[0003] The present application provides a charging control circuit and an electronic atomization device, which can reduce the current tolerance and improve the consistency of the charging time.

[0004] To solve the above problems, the first technical solution provided by the present application is to provide a charging control circuit, which comprises a charging chip, a first charging setting path and a control chip, wherein the charging chip comprises a charging current setting end and a charging connection end; the control chip comprises an adjustment voltage end for outputting an adjustment voltage, wherein the first charging setting path is arranged between the adjustment voltage end and the charging current setting end, and the control chip controls the size of the adjustment voltage to change the first charging setting current flowing through the first charging setting path, so as to adjust the charging setting current flowing through the charging current setting end, and to adjust the charging current output by the charging connection end.

[0005] In an embodiment, the charging control circuit further comprises a second charging setting path arranged between the charging current setting end and a ground voltage, wherein the second charging setting current flowing through the second charging setting path is determined by the charging current setting end, and the charging setting current flowing through the charging current setting end is the vector sum of the first charging setting current and the second charging setting current.

[0006] In an embodiment, the adjustment voltage is negatively correlated with the charging current.

[0007] In an embodiment, the adjustment voltage is a pulse width modulation voltage, and the control chip changes the size of the adjustment voltage by adjusting the duty cycle of the adjustment voltage, so as to change the charging current.

[0008] In an embodiment, the charging control circuit further comprises a current detection unit arranged on a connection path between the charging connection end of the charging chip and the charging device to detect the charging current output from the charging connection end to the charging device and connected to the control chip to return a first feedback signal to the control chip.

[0009] In an embodiment, the control chip controls the size of the adjustment voltage based on the first feedback signal; in response to the first feedback signal representing that the charging current is greater than or less than a preset charging current range, the control chip adjusts the size of the adjustment voltage upward or downward to maintain the charging current within the preset charging current range.

[0010] In an embodiment, the charging control circuit further comprises a switch unit arranged on a connection path between the charging connection end of the charging chip and the charging device; wherein the control chip further comprises a first input / output end, and the first input / output end of the control chip is connected to a control end of the switch unit; when the first feedback signal represents that the charging current exceeds a maximum charging current allowed by the charging device, the control chip sends a control signal to the switch unit through the first input / output end to make the switch unit disconnect the connection path between the charging connection end and the charging device.

[0011] In an embodiment, the charging control circuit further comprises an ambient temperature detection unit comprising an ambient temperature detection element; wherein the control chip comprises a temperature unit power supply end and a temperature detection end, the temperature unit power supply end is connected to the ambient temperature detection unit to supply power to the ambient temperature detection unit to make it work normally; and the temperature detection end is connected to the ambient temperature detection element to receive a second feedback signal representing the ambient temperature.

[0012] In an embodiment, the ambient temperature detection unit comprises a first resistor and a second resistor, wherein the first resistor and the second resistor are connected in series between the temperature unit power supply end and a ground voltage, the second resistor is a temperature-sensitive resistor, and a connection point between the first resistor and the second resistor serves as an output end of the ambient temperature detection unit and is connected to the temperature detection end to feed back the second feedback signal to the charging chip.

[0013] In an embodiment, in response to the second feedback signal representing that the ambient temperature is lower than or higher than the chargeable temperature range, the control chip adjusts the size of the adjustment voltage so that the charging current output by the charging connection end is 0; in response to the second feedback signal representing that the ambient temperature is in the chargeable temperature range and in a different chargeable temperature sub-range, the control chip adjusts the size of the adjustment voltage so that the charging connection end outputs the corresponding charging current based on the different chargeable temperature sub-range.

[0014] In an embodiment, in response to the charging time of the charging device being in different charging time periods, the control chip adjusts the size of the adjustment voltage so that the charging connection end outputs the corresponding charging current based on the different charging time periods.

[0015] In an embodiment, the first charging setting path comprises: a third resistor and a fourth resistor, a first end of the third resistor being connected to the adjustment voltage end; a first end of the fourth resistor being connected to a second end of the third resistor, and a second end of the fourth resistor being connected to the second charging setting path.

[0016] In an embodiment, the second charging setting path comprises: a fifth resistor, a first end of the fifth resistor being connected to the first charging setting path, and a second end of the fifth resistor being grounded.

[0017] In an embodiment, the current detection unit comprises: a sixth resistor and a comparator, a first end of the sixth resistor being connected to the charging connection end; a first end of the comparator being connected to the first end of the sixth resistor, a second end of the comparator being connected to the second end of the sixth resistor, and an output end of the comparator being connected to the control chip.

[0018] To solve the above problems, the second technical solution provided by the present application is to provide an electronic atomization device, which comprises the charging control circuit according to any one of the above embodiments.

[0019] Different from the prior art, the charging control circuit and the electronic atomization device provided by the present application, the charging control circuit comprises a charging chip, a first charging setting path and a control chip, wherein the charging chip comprises a charging current setting end and a charging connection end; the control chip comprises an adjustment voltage end for outputting an adjustment voltage; the first charging setting path is arranged between the adjustment voltage end and the charging current setting end; the control chip controls the size of the adjustment voltage to change the first charging setting current flowing through the first charging setting path, so as to adjust the charging setting current flowing through the charging current setting end, thereby adjusting the charging current output by the charging connection end, reducing the charging current tolerance and improving the consistency of the charging time. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings are within the scope of the present application.

[0021] Figure 1 The structural schematic diagram of the charging control circuit provided by the first embodiment of the present application is shown in FIG. 1.

[0022] Figure 2 The structural schematic diagram of the charging control circuit provided by the second embodiment of the present application is shown in FIG. 2.

[0023] Figure 3 The structural schematic diagram of the charging control circuit provided by the third embodiment of the present application is shown in FIG. 3.

[0024] Figure 4 The structural schematic diagram of the charging control circuit provided by the fourth embodiment of the present application is shown in FIG. 4.

[0025] Figure 5 The structural schematic diagram of the charging control circuit provided by the fifth embodiment of the present application is shown in FIG. 5.

[0026] Figure 6 The structural schematic diagram of the charging control circuit provided by the fifth embodiment of the present application is shown in FIG. 5.

[0027] Figure 7 The structural schematic diagram of the charging control circuit provided by the fifth embodiment of the present application is shown in FIG. 5.

[0028] Figure 8 The structural schematic diagram of the electronic atomization device provided by the first embodiment of the present application is shown in FIG. 6.

[0029] Figure 9 The structural schematic diagram of the electronic atomization device provided by the second embodiment of the present application is shown in FIG. 7. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0031] Please refer to Figure 1 , Figure 1This is a schematic diagram of the charging control circuit provided in the first embodiment of this application. Specifically, the charging control circuit includes: a charging chip 11, at least one charging setting path 12, and a control chip 13. The charging chip 11 includes a charging current setting terminal A1 and a charging connection terminal A2. The charging chip 11 provides a preset setting voltage U1 at the charging current setting terminal A1 to generate a charging setting current I1 flowing through the charging current setting terminal A1. The charging connection terminal A2 is used to connect to a charging device and output a charging current I corresponding to the charging setting current I1 to the charging device. The at least one charging setting path 12 includes a first charging setting path 121. The control chip 13 includes an adjustment voltage terminal P1, which outputs an adjustment voltage U2. The first charging setting path 121 is located between the adjustment voltage terminal P1 and the charging current setting terminal A1. The control chip 13 controls the magnitude of the adjustment voltage U2 to change the first charging setting current I2 flowing through the first charging setting path 121, thereby adjusting the charging setting current I1 flowing through the charging current setting terminal A1 and adjusting the charging current I output by the charging connection terminal A2.

[0032] It should be noted that the charging chip 11 itself has a current amplification factor K, and the charging current I output by the charging connection terminal A2 is equal to K × the charging setting current I1. In addition, the preset setting voltage U1 and the current amplification factor K provided by the charging current setting terminal A1 are determined according to the device specifications of the charging chip 11.

[0033] This application sets up a first charging path 121 between the adjustment voltage terminal P1 and the charging current setting terminal A1. The control chip 13 controls the magnitude of the adjustment voltage U2 to change the first charging setting current I2 flowing through the first charging setting path 121, thereby adjusting the charging setting current I1 flowing through the charging current setting terminal A1, adjusting the charging current I output by the charging connection terminal A2, reducing the tolerance of the charging current I, and improving the consistency of charging time.

[0034] In one embodiment, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the charging control circuit provided in the second embodiment of this application, which is consistent with the above. Figure 1 Compared to the first embodiment shown, the difference lies in that, in this embodiment, at least one charging setting path 12 further includes a second charging setting path 122. The second charging setting path 122 is disposed between the charging current setting terminal A1 and the ground voltage, wherein the second charging setting current I3 flowing through the second charging setting path 122 is determined by the charging current setting terminal A1, and the charging setting current I1 flowing through the charging current setting terminal A1 is the vector sum of the first charging setting current I2 and the second charging setting current I3.

[0035] In one embodiment, the adjustment voltage U2 is a pulse width modulation voltage. The control chip 13 changes the magnitude of the adjustment voltage U2 by adjusting the duty cycle of the adjustment voltage U2, thereby changing the charging current I.

[0036] In one embodiment, please refer to Figure 3 , Figure 3 This is a schematic diagram of the charging control circuit provided in the third embodiment of this application. The charging control circuit in this embodiment is similar to the one described above. Figure 1 Compared to the first embodiment shown, this embodiment further includes a current detection unit 14. The current detection unit 14 is disposed on the connection path between the charging connection terminal A2 of the charging chip 11 and the charging device. The current detection unit 14 detects the charging current I output by the charging connection terminal A2 to the charging device and connects to the control chip 13 to return a first feedback signal to the control chip 13. Specifically, when the first feedback signal indicates that the charging current I is greater than or less than a preset charging current range, the control chip 13 adjusts the magnitude of the adjustment voltage U2 upwards or downwards to maintain the charging current I within the preset charging current range. Specifically, when the current detection unit 14 detects that the charging current I is greater than or less than the preset charging current range, it sends a first feedback signal to the control chip 13. The control chip 13 can control the magnitude of the adjustment voltage U2 based on the first feedback signal to change the first charging setting current I2 flowing through the first charging setting path 121, thereby adjusting the charging setting current I1 flowing through the charging current setting terminal A1, and thus adjusting the charging current I output by the charging connection terminal A2.

[0037] In one embodiment, the first feedback signal represents the magnitude of the charging current I. The control chip 13 increases or decreases the adjustment voltage U2 based on the first feedback signal, thereby changing the magnitude of the charging current I and maintaining it within a preset charging current range. Specifically, when the control chip 13 receives the first feedback signal, it adjusts the duty cycle of the adjustment voltage U2 to change its magnitude, thereby changing the charging current I.

[0038] In one embodiment, the adjustment voltage U2 is negatively correlated with the charging current I. That is, when the charging current I is greater than a preset charging current range, the adjustment voltage U2 is increased, thereby decreasing the charging current I so that the charging current I is within the preset charging current range; when the charging current I is less than the preset charging current range, the adjustment voltage U2 is decreased, thereby increasing the charging current I so that the charging current I is within the preset charging current range.

[0039] In one embodiment, please refer to Figure 4 , Figure 4 This is a schematic diagram of the charging control circuit provided in the fourth embodiment of this application. The charging control circuit in this embodiment is similar to the one described above. Figure 3Compared to the third embodiment shown, this embodiment further includes a switching unit 15. The switching unit 15 is disposed on the connection path between the charging connection terminal A2 of the charging chip 11 and the charging device. In this embodiment, the control chip 13 further includes a first input / output terminal (I / O), and the first input / output terminal I / O of the control chip 13 is connected to the control terminal of the switching unit 15. When the first feedback signal indicates that the charging current I exceeds the maximum allowable charging current of the charging device, the control chip 13 sends a control signal to the switching unit 15 through the first input / output terminal I / O, causing the switching unit 15 to disconnect the connection path between the charging connection terminal A2 and the charging device, thereby stopping charging the charging device.

[0040] In one embodiment, please refer to Figure 5 , Figure 5 This is a schematic diagram of the charging control circuit provided in the fifth embodiment of this application, which is consistent with the above. Figure 1 Compared to the first embodiment shown, this embodiment further includes an ambient temperature detection unit 16. The ambient temperature detection unit 16 includes an ambient temperature sensing element 17. The control chip 13 includes a temperature unit power supply terminal P2 and a temperature sensing terminal ADC. The temperature unit power supply terminal P2 is connected to the ambient temperature detection unit 16 to supply power and enable its normal operation. The temperature sensing terminal ADC is connected to the ambient temperature sensing element 17 to receive a second feedback signal reflecting the ambient temperature.

[0041] In one embodiment, such as Figure 6 As shown, Figure 6 The schematic diagram shows a specific structure of an embodiment of the charging control circuit provided in this application. The ambient temperature detection unit 16 includes a first resistor R1 and a second resistor R2. The first resistor R1 and the second resistor R2 are connected in series between the power supply terminal P1 of the temperature unit and the ground voltage. The second resistor R2 is a thermistor. The connection point between the first resistor R1 and the second resistor R2 serves as the output terminal of the ambient temperature detection unit 16, connected to the temperature detection terminal ADC, to feed back a second feedback signal to the control chip 13.

[0042] In one specific embodiment, in response to a second feedback signal indicating that the ambient temperature is below or above the rechargeable temperature range, the control chip 13 adjusts the magnitude of the adjustment voltage U2 so that the charging current I output by the charging connection terminal A2 is 0. In response to a second feedback signal indicating that the ambient temperature is within the rechargeable temperature range and within different rechargeable temperature sub-ranges, the control chip 13 adjusts the magnitude of the adjustment voltage U2 so that the charging connection terminal A2 outputs a corresponding charging current I based on the different rechargeable temperature sub-ranges.

[0043] Specifically, in an embodiment, assuming that the chargeable temperature range is 0°-60°, the chargeable temperature range includes a plurality of chargeable temperature sub-ranges, and are respectively a first chargeable temperature sub-range, a second chargeable temperature sub-range and a third chargeable temperature sub-range. The first chargeable temperature sub-range is 0°-15°, the second chargeable temperature sub-range is 15°-45°, and the third chargeable temperature sub-range is 45°-60°. If the ambient temperature is lower than 0° or higher than 60°, the control chip 13 adjusts the duty cycle of the adjustment voltage U2, and then adjusts the size of the adjustment voltage U2, so that the charging current I output by the charging connection end A2 is 0; if the ambient temperature is 0°-15°, the control chip 13 adjusts the duty cycle of the adjustment voltage U2, and then adjusts the size of the adjustment voltage U2, so that the charging current I output by the charging connection end A2 is 0.5C (the first standard charging current); if the ambient temperature is 15°-45°, the control chip 13 adjusts the duty cycle of the adjustment voltage U2, and then adjusts the size of the adjustment voltage U2, so that the charging current I output by the charging connection end A2 is 1C (the second standard charging current); if the ambient temperature is 45°-60°, the control chip 13 adjusts the duty cycle of the adjustment voltage U2, and then adjusts the size of the adjustment voltage U2, so that the charging current I output by the charging connection end A2 is 0.5C (the third standard charging current). Wherein, C is the capacity of the charging battery, such as the capacity of the charging battery is 500mAh, and 0.5C is the charging current of 250mAh.

[0044] In an embodiment, the constant current phase charging characteristic can also be defined by itself. Specifically, in response to the charging time of the charging device being in different charging time periods, the control chip 13 adjusts the size of the adjustment voltage U2 to make the charging connection end A2 output corresponding charging current I based on different charging time periods.

[0045] In an embodiment, the charging time of the charging device is divided into different charging time periods, and includes a first charging time period, a second charging time period, and a third charging time period. Assuming that the first charging time period is 0-10 minutes, the first constant current value is 800 mA; the second charging time period is 11-25 minutes, the second constant current value is 500 mA; and the third charging time period is greater than 26 minutes, the third constant current value is 300 mA. Specifically, when the charging time of the charging device is 0-10 minutes, the control chip 13 adjusts the duty cycle of the adjustment voltage U2, and then adjusts the size of the adjustment voltage U2, so that the charging current I output by the charging connection end A2 is 800 mA, achieving the purpose of fast charging; when the charging time of the charging device is 11-25 minutes, the charging device has reached a certain capacity, in order to reduce the charging load, the control chip 13 adjusts the duty cycle of the adjustment voltage U2, and then adjusts the size of the adjustment voltage U2, so that the charging current I output by the charging connection end A2 is 500 mA; when the charging time of the charging device is greater than 26 minutes, the charging device is about to be saturated, the control chip 13 adjusts the duty cycle of the adjustment voltage U2, and then adjusts the size of the adjustment voltage U2, so that the charging current I output by the charging connection end A2 is 300 mA.

[0046] Please refer to Figure 7 , Figure 7 The specific structure diagram of an embodiment of the charging control circuit provided in the present application, in the embodiment, the first charging setting path 121 includes a third resistor R3, a fourth resistor R4, and a capacitor C. The first end of the third resistor R3 is connected to the adjustment voltage end P1, the first end of the fourth resistor R4 is connected to the second end of the third resistor R3, and the second end of the fourth resistor R4 is connected to the second charging setting path 122. The first end of the capacitor C is connected to the second end of the third resistor R3 and the first end of the fourth resistor R4, and the second end of the capacitor C is grounded.

[0047] The second charging setting path 122 includes a fifth resistor R5, the first end of the fifth resistor R5 is connected to the second end of the fourth resistor R4 and the charging current setting end A1 of the charging chip 11, and the second end of the fifth resistor R5 is grounded.

[0048] The current detection unit 14 includes a sixth resistor R6 and a comparator Q, wherein the first end of the sixth resistor R6 is connected to the charging connection end A2, and the second end of the sixth resistor R6 is connected to the switch unit 15; the first end of the comparator Q is connected to the first end of the sixth resistor R6, the second end of the comparator Q is connected to the second end of the sixth resistor R6, and the output end of the comparator Q is connected to the P3 end of the control chip 13. The output end of the comparator Q is used to output a first feedback signal.

[0049] It should be noted that the charging chip 11 itself has a current amplification coefficient K, and the charging current I output by the charging connection end A2 is I = K * charging setting current I1. In addition, the preset setting voltage U1 provided by the charging current setting end A1 and the current amplification coefficient K are determined according to the device specifications of the charging chip 11. The charging setting current I1 flowing through the charging current setting end A1 is the vector sum of the first charging setting current I2 and the second charging setting current I3.

[0050] Specifically, referring to Figure 7 , assuming that the preset setting voltage U1 = 1V, the current amplification coefficient K = 1000, R5 = 2K, R3 = 200R, and R4 = 1.8K, where R = R3 + R4, then:

[0051] Formula 1: when U2 = 0V,

[0052] I1 = U1 / (R5 / R) = 1V / 1K = 1mA, I = 1 * 1000mA = 1000mA;

[0053] Formula 2: when U2 = 1V,

[0054] I1 = I3 = U1 / R5 = 1V / 2K = 0.5mA, I = 0.5 * 1000mA = 500mA;

[0055] Formula 3: when U2 = 1.5V,

[0056] I1 = I3 - I2 = U1 / R5 - (U2 - U1) / R = 1 / 2 - 0.5 / 2 = 0.25mA, I = 0.25 * 1000mA = 250mA;

[0057] Formula 4: when U2 = 2.0V,

[0058] From formula 3, it can be seen that I1 = I3 - I2 = 0mA, I = 0mA;

[0059] Formula 5: when U2 > 2.0V,

[0060] From formula 3, it can be seen that I1 = I3 - I2 < 0, I = 0mA;

[0061] From formula 1 to formula 5, it can be seen that when the adjustment voltage U2 increases, the charging current I decreases. According to formula 3, the relationship between the adjustment voltage U2 and the charging current I can be derived as follows: U2 = [(1 + R / R5) U1 - (R * I / K)], that is, the adjustment voltage U2 and the charging current I are negatively correlated.

[0062] The charging control circuit provided by the application is flexible and various in current regulation, and meets various charging application scenarios, such as charging of electronic atomization devices, charging of mobile devices, and charging of various electronic products. Specifically, the charging control circuit provided by the application increases the regulation loop of the charging current I by setting a first charging setting path 121 between the adjustment voltage end P1 and the charging current setting end A1, the deviation of the charging current I is theoretically calculated to be not more than 2%, and the product charging duration consistency is good; and the charging control circuit provided by the application further includes a current detection unit 14 and an ambient temperature detection unit 16, which can detect the charging temperature and the change of the charging current I during charging, and the control chip 13 can adjust the size of the adjustment voltage U2 according to the charging temperature and the charging current I, thereby adjusting the size of the charging current I or making the charging current I 0, and the charging safety is high; and the charging control circuit provided by the application occupies few hardware resources, and only one I / O port can realize the functions of charging, current regulation and prohibiting charging, thereby greatly reducing the hardware (such as PCB) design and software design difficulty.

[0063] Referring to Figure 8 , Figure 8 The structure diagram of the electronic atomization device provided by the first embodiment of the application is shown in the figure. The electronic atomization device 100 can be used in different fields, such as medical treatment, beauty or leisure smoking, etc. The electronic atomization device 100 includes an atomization assembly 10 and a battery assembly 20. The atomization assembly 10 is used to heat and atomize an aerosol generating substrate, such as a solid aerosol generating substrate with a specific aroma of plant leaves, to be baked in a heat-not-burn manner to form an aerosol, or a combined liquid aerosol generating substrate containing a flavoring substance, to be heated and atomized in an electric heating manner to form an aerosol. The battery assembly 20 is electrically connected with the atomization assembly 10 to supply power to the atomization assembly 10 and control the atomization assembly 10 to heat and atomize the aerosol generating substrate. The atomization assembly 10 and the battery assembly 20 can be integrally formed or detachably arranged.

[0064] Referring to Figure 9 , Figure 9 The structure diagram of the electronic atomization device provided by the second embodiment of the application is shown in the figure. Compared with the electronic atomization device 100 shown in the above Figure 8 , the difference is that the electronic atomization device 100 in the embodiment further includes a charging control circuit 30, which is the charging control circuit provided by any of the above embodiments. The charging control circuit 30 meets the charging failure requirement of the electronic atomization device stipulated in the American UL8139.

[0065] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A charge control circuit, characterized by comprising: The charging control circuit comprises: a charging chip comprising a charging current setting end and a charging connection end; a first charging setting path; a control chip comprising an adjustment voltage end for outputting an adjustment voltage, wherein the first charging setting path is arranged between the adjustment voltage end and the charging current setting end, the control chip controls the size of the adjustment voltage to change a first charging setting current flowing through the first charging setting path, so as to adjust a charging setting current flowing through the charging current setting end, and to adjust a charging current output by the charging connection end; the charging control circuit further comprises: a second charging setting path arranged between the charging current setting end and a ground voltage, wherein a second charging setting current flowing through the second charging setting path is determined by the charging current setting end, and the charging setting current flowing through the charging current setting end is a vector sum of the first charging setting current and the second charging setting current; wherein the adjustment voltage is negatively correlated with the charging current; the first charging setting path comprises: a third resistor, a first end of the third resistor being connected to the adjustment voltage end; a fourth resistor, a first end of the fourth resistor being connected to a second end of the third resistor, and a second end of the fourth resistor being connected to the second charging setting path; the second charging setting path comprises: a fifth resistor, a first end of the fifth resistor being connected to the first charging setting path, and a second end of the fifth resistor being grounded.

2. The charge control circuit according to claim 1, characterized by The adjustment voltage is a pulse width modulation voltage, and the control chip changes the size of the adjustment voltage by adjusting the duty cycle of the adjustment voltage, so as to change the charging current.

3. The charge control circuit according to claim 1, characterized by Further comprising: a current detection unit arranged on a connection path between the charging connection end of the charging chip and a charging device to detect the charging current output by the charging connection end to the charging device, and connected to the control chip to return a first feedback signal to the control chip.

4. The charge control circuit according to claim 3, characterized by The control chip controls the size of the adjustment voltage based on the first feedback signal; in response to the first feedback signal representing that the charging current is greater than or less than a preset charging current range, the control chip adjusts the size of the adjustment voltage upward or downward to maintain the charging current within the preset charging current range.

5. The charge control circuit according to claim 3 or 4, characterized by Further comprising: a switch unit arranged on a connection path between the charging connection end of the charging chip and the charging device; wherein the control chip further comprises a first input / output end, and the first input / output end of the control chip is connected to a control end of the switch unit, and when the first feedback signal represents that the charging current exceeds a maximum charging current allowed by the charging device, the control chip sends a control signal to the switch unit through the first input / output end to disconnect the connection path between the charging connection end and the charging device.

6. The charge control circuit according to claim 1, characterized by Further comprising: an ambient temperature detection unit comprising an ambient temperature detection element; The control chip includes a temperature unit power supply end and a temperature detection end. The temperature unit power supply end is connected to the environmental temperature detection unit to supply power to the environmental temperature detection unit, so that the environmental temperature detection unit works normally. The temperature detection end is connected to the environmental temperature detection unit to receive a second feedback signal of the reaction environment temperature.

7. The charge control circuit according to claim 6, characterized by The environmental temperature detection unit includes a first resistor and a second resistor. The first resistor and the second resistor are connected in series between the temperature unit power supply end and a ground voltage. The second resistor is a temperature-sensitive resistor. A connection point between the first resistor and the second resistor serves as an output end of the environmental temperature detection unit and is connected to the temperature detection end to feed back the second feedback signal to the charging chip.

8. The charging control circuit according to claim 6, wherein in response to the second feedback signal representing that the environmental temperature is lower than or higher than the chargeable temperature range, the control chip adjusts the size of the adjustment voltage, so that the charging current output by the charging connection end is 0; in response to the second feedback signal representing that the environmental temperature is in the chargeable temperature range and in different chargeable temperature sub-ranges, the control chip adjusts the size of the adjustment voltage, so that the charging connection end outputs corresponding charging currents based on different chargeable temperature sub-ranges.

9. The charging control circuit according to claim 1, wherein in response to the charging time of the charging device being in different charging time periods, the control chip adjusts the size of the adjustment voltage, so that the charging connection end outputs corresponding charging currents based on different charging time periods.

10. The charge control circuit according to claim 3, characterized by The current detection unit includes: a sixth resistor, a first end of the sixth resistor being connected to the charging connection end; a comparator, a first end of the comparator being connected to the first end of the sixth resistor, a second end of the comparator being connected to a second end of the sixth resistor, and an output end of the comparator being connected to the control chip.

11. An electronic atomizing device, characterized by, The charging control circuit includes any one of claims 1-10.

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