Charging control circuit and charging equipment

Abstract

The utility model relates to the technical field of charging control, in particular to a charging control circuit and charging equipment. The charging control circuit is applied to the charging equipment, the charging equipment comprises a shell, the shell is provided with a bottom face and a plurality of side faces adjacent to the bottom face, the area of the side faces is smaller than that of the bottom face, and the bottom face and the side faces can abut against an external supporting platform. The charging control circuit comprises a main control circuit unit, a power conversion circuit unit and an angle detection unit, and the angle detection unit is used for detecting the inclination state of the bottom face of the shell and feeding back a level signal to the main control circuit unit. The master control circuit unit is used for controlling the power conversion circuit unit to output first charging power and second charging power based on the level signal, and the first charging power is greater than the second charging power. The service life of the charging equipment can be prolonged, and potential safety hazards are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging control technical field, especially a kind of charging control circuit and charging equipment. BACKGROUND

[0002] With the charging power of the charging equipment such as charger, mobile power etc. of industry is more and more big, heat dissipation becomes the difficulty of industry, especially the product of natural cooling heat dissipation mode.

[0003] The charging equipment using natural cooling heat dissipation mode is often relied on the contact of the outer surface of charging equipment body and air to dissipate heat, the greater the contact area, the smaller the thermal resistance, the faster the heat dissipation.When the charging equipment is placed on the support platform such as desktop, if the larger area side of charging equipment is in contact with support platform to support charging equipment on support platform, heat dissipation is carried out through smaller area bottom, at this time, the heat dissipation area of charging equipment is smaller, and the heat dissipation effect is poor;Further lead to charging equipment working temperature accumulation, affect the service life of charging equipment and exist security risk. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the embodiment of the utility model lies in providing a kind of charging control circuit and charging equipment, to solve the problem that the working temperature accumulation of charging equipment is easily caused by the contact of larger area with support platform in prior art, affect the service life of charging equipment and exist security risk.

[0005] The utility model discloses a kind of charging control circuit, the charging control circuit is applied to charging equipment, the charging equipment includes shell, the shell is equipped with bottom and multiple sides adjacent to the bottom, and the area of multiple sides is all less than the area of bottom, the bottom and multiple sides can be used to abut with external support platform, to make the charging equipment is supported on the support platform in use state, the charging control circuit includes main control circuit unit, power conversion circuit unit and angle detection unit, the angle detection unit is used to detect the inclination state of the bottom of shell and feedback level signal to the main control circuit unit, the main control circuit unit is used to control the power conversion circuit unit output first charging power or second charging power based on the level signal, the first charging power is greater than the second charging power.

[0006] Optionally, the charging control circuit further comprises a first power supply unit, the angle detection unit comprises a photoelectric tilt sensing switch, a first resistor and a second resistor, the first resistor is connected in series between a voltage output end of the first power supply unit and a positive electrode of an emitting end of the photoelectric tilt sensing switch, the second resistor is connected in series between the voltage output end of the first power supply unit and a collector of a receiving end of the photoelectric tilt sensing switch, a negative electrode of the emitting end of the photoelectric tilt sensing switch is grounded, the collector of the receiving end is further connected to a transmission pin of the master control circuit unit, and a transmitting electrode of the receiving end is grounded, wherein a light signal transmission direction of the photoelectric tilt sensing switch is perpendicular to a bottom surface of the shell, and each of the plurality of side surfaces is perpendicular to the bottom surface.

[0007] Optionally, the charging control circuit further comprises a level inversion circuit unit, which is arranged between the transmission pin of the master control circuit unit and the collector of the receiving end of the photoelectric tilt sensing switch.

[0008] Optionally, the level inversion circuit unit comprises an NMOS tube and a third resistor, the third resistor is connected in series between a gate of the NMOS tube and the collector of the receiving end of the photoelectric tilt sensing switch, a drain of the NMOS tube is connected to the transmission pin of the master control circuit unit, and a source is grounded.

[0009] Optionally, the level inversion circuit unit further comprises a fourth resistor, one end of the fourth resistor is connected to the gate of the NMOS tube, and the other end is grounded.

[0010] Optionally, the level inversion circuit unit further comprises a fifth resistor, the fifth resistor is connected in series between the source of the NMOS tube and the transmission pin of the master control circuit unit.

[0011] Optionally, the first power supply unit comprises a first voltage stabilizing chip, a first capacitor and a second capacitor, a voltage output end of the first voltage stabilizing chip is connected to one end of the first resistor, a voltage input end is connected to an external power supply, the first capacitor is connected in series between the voltage input end and a ground end of the first voltage stabilizing chip, and the second capacitor is connected in series between the voltage output end and the ground end of the first voltage stabilizing chip.

[0012] Optionally, the charging control circuit further comprises a second power supply unit, a voltage output end of the second power supply unit is connected to a power supply input pin of the master control circuit unit, and a voltage input end is connected to an external power supply.

[0013] Optionally, the second power supply unit comprises a second voltage stabilizing chip, a third capacitor and a fourth capacitor, a voltage output end of the second voltage stabilizing chip is connected to a power input pin of the main control circuit unit, a voltage input end is connected to an external power supply, the third capacitor is connected in series between the voltage input end and a ground end of the second voltage stabilizing chip, and the fourth capacitor is connected in series between the voltage output end and the ground end of the second voltage stabilizing chip.

[0014] The utility model discloses still a kind of charging equipment, including shell and the charging control circuit as described above, the shell is equipped with bottom surface and with the bottom surface adjacently arranged multiple side, and the area of multiple side is less than the area of bottom surface, and the bottom surface and multiple side can be used with external support platform abut, to make the charging equipment in use state be supported on the support platform, the angle detection unit of the charging control circuit is used to detect the inclination state of the bottom surface of the shell and feedback level signal to the main control circuit unit.

[0015] Compared with prior art, the charging control circuit and the charging equipment provided by the utility model embodiment have the beneficial effects that: the charging control circuit is applied in the charging equipment, the charging control circuit is provided with the main control circuit unit, the power conversion circuit unit and the angle detection unit, the angle detection unit is used to detect the inclination state of the bottom surface with smaller area of the charging equipment shell, and feedback level signal to the main control circuit unit, the main control circuit unit controls the power conversion circuit unit to output first charging power or second charging power based on level signal, can be realized in the case that the bottom surface with smaller area of shell abuts against support platform, output larger first charging power, in the case that the side with larger area abuts against support platform, output second charging power less than first charging power, avoid working temperature accumulation when the charging equipment works in the side with larger area abutting against support platform, make the charging equipment work in safe temperature state, improve the service life of the charging equipment, reduce security risks. BRIEF DESCRIPTION OF DRAWINGS

[0016] The technical solutions of the utility model will be described in further detail below with reference to the drawings and embodiments, and in the drawings:

[0017] Figure 1 It is a brief structure schematic diagram of an embodiment of the charging equipment provided by the utility model;

[0018] Figure 2 It is the structure block diagram of the charging control circuit provided by the utility model embodiment;

[0019] Figure 3 It is the circuit principle diagram of the charging control circuit provided by the utility model embodiment;

[0020] Figure 4It is a brief structure schematic view of relative position of the bottom surface of the shell and the photoelectric tilt sensing switch installation provided by the embodiment of the utility model.

[0021] Figure 5 It is the angle trigger diagram of the photoelectric tilt sensing switch provided by the embodiment of the utility model.

[0022] The reference signs in the drawings are as follows:

[0023] 100, charging control circuit;

[0024] 110, main control circuit unit; 120, power conversion circuit unit; 130, angle detection unit; 140, first power supply unit; 150, level inversion circuit unit; 160, second power supply unit;

[0025] U1, photoelectric tilt sensing switch; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; Q1, NMOS tube; U2, first voltage stabilizing chip; C1, first capacitor; C2, second capacitor; U3, second voltage stabilizing chip; C3, third capacitor; C4, fourth capacitor;

[0026] 200, shell; 210, bottom surface; 220, side surface. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Now, the preferred embodiments of the utility model will be described in detail in combination with the drawings.

[0028] The embodiment of the utility model provides a kind of charging control circuit 100, charging control circuit 100 is applied to charging equipment, such as Figure 1 As shown, the charging equipment includes shell 200, shell 200 is equipped with bottom surface 210 and the plurality of side surfaces 220 adjacent to bottom surface 210, and the area of the plurality of side surfaces 220 is less than the area of bottom surface 210, bottom surface 210 and the plurality of side surfaces 220 can be used to abut with external support platform, to make charging equipment be supported on support platform in use state. User can abut bottom surface 210 of shell 200 with support platform when using charging equipment, place charging equipment on support platform, or abut one of the plurality of side surfaces 220 of shell 200 with support platform, place charging equipment on support platform. Charging equipment can be charger, mobile power and other products that can realize charging, especially high-power charger or mobile power.

[0029] As shown in Figure 1 And Figure 2As shown, the charging control circuit 100 comprises a master control circuit unit 110, a power conversion circuit unit 120, and an angle detection unit 130, the angle detection unit 130 is configured to detect the inclination state of the bottom surface 210 of the shell 200 and feed a level signal to the master control circuit unit 110, and the master control circuit unit 110 is configured to control the power conversion circuit unit 120 to output a first charging power or a second charging power based on the level signal, the first charging power being greater than the second charging power.

[0030] The charging control circuit 100 of the embodiment of the present application comprises the master control circuit unit 110, the power conversion circuit unit 120, and the angle detection unit 130, the angle detection unit 130 is configured to detect the inclination state of the bottom surface 210 of the shell 200 with a small area and feed a level signal to the master control circuit unit 110, and the master control circuit unit 110 is configured to control the power conversion circuit unit 120 to output a first charging power and a second charging power based on the level signal, so that the first charging power with a large value can be output when the bottom surface 210 with a small area of the shell 200 is in abutment with the support platform, and the second charging power smaller than the first charging power can be output when the side surface 220 with a large area is in abutment with the support platform, thereby avoiding the accumulation of working temperature of the charging device when the side surface 220 with a large area is in abutment with the support platform, and allowing the charging device to work in a safe temperature state, improving the service life of the charging device and reducing the security risks.

[0031] The level signal is a high level signal and a low level signal, and the master control circuit unit 110 outputs a corresponding control signal to control the power conversion circuit unit 120 to output a corresponding charging power according to the high level signal or the low level signal. The master control circuit unit 110 can use an existing chip to receive the level signal and control the power conversion circuit unit 120 to output different charging powers. For example, the master control circuit unit 110 receives the level signal, outputs a PWM signal when the level signal is a high level signal, and outputs another PWM signal when the level signal is a low level signal, so as to output different PWM signals to drive the power conversion circuit unit 120 to output different charging powers.

[0032] The power conversion circuit unit 120 can use a conventional circuit to output different charging powers, such as a conventional buck-boost circuit, and the specific circuit structure of the power conversion circuit unit 120 is not described herein.

[0033] Reference Figures 2 to 4In the optional embodiment of the present application, the charging control circuit 100 further comprises a first power supply unit 140, and the angle detection unit 130 comprises a photoelectric tilt sensing switch U1, a first resistor R1 and a second resistor R2. The first resistor R1 is connected in series between the positive electrode of the emitting end of the photoelectric tilt sensing switch U1 and the voltage output end of the first power supply unit 140, and the second resistor R2 is connected in series between the collector of the receiving end of the photoelectric tilt sensing switch U1 and the voltage output end of the first power supply unit 140. The negative electrode of the emitting end of the photoelectric tilt sensing switch U1 is grounded, the collector of the receiving end is further connected to the transmission pin of the master control circuit unit 110, and the emitter of the receiving end is grounded. The light signal transmission direction of the photoelectric tilt sensing switch U1 is perpendicular to the bottom surface 210 of the shell 200, and each of the plurality of side surfaces 220 is perpendicular to the bottom surface 210.

[0034] The photoelectric tilt sensing switch U1 is a sensor device, which is usually used to detect the tilt angle or position of an object. This switch utilizes photoelectric sensor technology to perceive the tilt state of the object through photoelectric effect, and has high accuracy and response speed, and can timely send a level signal. When the object is tilted to a preset angle, the photoelectric tilt sensing switch U1 detects the change.

[0035] Specifically, the photoelectric tilt sensing switch U1 is internally provided with an emitting transistor, a receiving transistor, an inverted conical cavity and a light-blocking ball. The emitting transistor and the receiving transistor are arranged in a position opposite to each other, the receiving transistor is used to receive the light signal emitted by the emitting transistor, and the light-blocking ball moves in the inverted conical cavity. When the photoelectric tilt sensing switch U1 is placed flat, the light-blocking ball is located at the bottom of the inverted conical cavity and blocks the light signal emitted by the emitting transistor, the receiving transistor cannot receive the light signal, and the photoelectric tilt sensing switch U1 outputs a high level. When the photoelectric tilt sensing switch U1 is tilted to a low level trigger angle, the light-blocking ball moves to other areas, i.e. a low level area, and no longer blocks the light signal emitted by the emitting transistor, the receiving transistor can receive the light signal, and the photoelectric tilt sensing switch U1 outputs a low level. The model of the photoelectric tilt sensing switch U1 can be BL1250. The relative position diagram of the photoelectric tilt sensing switch U1 and the bottom surface 210 of the shell 200 is shown in Figure 4 , and the angle trigger diagram of the photoelectric tilt sensing switch U1 is shown in Figure 5 .

[0036] When the bottom surface 210 of the shell 200 is not tilted, i.e., the bottom surface 210 is in abutment with the external support platform, the light-blocking balls block the light signal emitted by the emitting transistor, the photoelectric tilt sensing switch U1 is turned off, and a high-level signal is output; when the shell 200 is tilted, one of the side surfaces 220 is in abutment with the support platform, the light-blocking balls no longer block the light signal emitted by the emitting transistor, the receiving transistor can receive the light signal, the photoelectric tilt sensing switch U1 is turned on, and a low-level signal is output, and the main control circuit unit 110 controls the power conversion circuit unit 120 to output the corresponding first charging power or second charging power based on the high-level signal or the high-level signal.

[0037] The first resistor R1 is used to limit the current flowing to the emitting end of the photoelectric tilt sensing switch U1, so as to avoid damage to the photoelectric tilt sensing switch U1 caused by excessive current.

[0038] The first power supply unit 140 can provide a working voltage for the photoelectric tilt sensing switch U1 to normally work, and keep the output of the photoelectric tilt sensing switch U1 at a high level when the photoelectric tilt sensing switch U1 is turned off, thereby improving the stability of the circuit.

[0039] By arranging the photoelectric tilt sensing switch U1, the first resistor R1 and the second resistor R2, the light transmission direction of the photoelectric tilt sensing switch U1 is perpendicular to the bottom surface 210 of the shell 200, so that the placement direction of the charging device can be effectively detected and recognized, and when the bottom surface 210 with a small area of the shell 200 is tilted and the side surface 220 with a large area is in abutment with the support platform, a small second charging power is controlled to be output, so that the working temperature accumulation of the charging device is avoided by using a simple circuit, the service life of the charging device is improved, and the safety hazard is reduced.

[0040] Reference Figure 2 and Figure 3 In the optional embodiment of the present application, the charging control circuit 100 further comprises a level inversion circuit unit 150, which is arranged between the transmission pin of the main control circuit unit 110 and the collector of the receiving end of the photoelectric tilt sensing switch U1.

[0041] The level inversion circuit unit 150 can invert the level signal output by the photoelectric tilt sensing switch U1, such as inverting the high-level signal into a low-level signal or inverting the low-level signal into a high-level signal, so as to reduce the circuit interference and improve the accuracy of the level signal transmission.

[0042] Reference Figure 2 and Figure 3 A preferred embodiment of the level inversion circuit unit 150 is provided in the present application.

[0043] AsFigure 2 and Figure 3 As shown in FIG. 1, the level inversion circuit unit 150 includes an NMOS tube Q1 and a third resistor R3, the third resistor R3 is connected in series between the gate of the NMOS tube Q1 and the collector of the receiving end of the photoelectric tilt sensing switch U1, the drain of the NMOS tube Q1 is connected to the transmission pin of the master control circuit unit 110, and the source is grounded.

[0044] The NMOS tube Q1 has a small conduction resistance and low power consumption, which helps to reduce the power consumption of the entire circuit. The third resistor R3 can limit the current flowing to the gate of the NMOS tube Q1, avoiding damage to the NMOS tube Q1 due to excessive current.

[0045] When the bottom surface 210 of the shell 200 is not tilted, i.e., the side surface 220 is erected on the support platform, the photoelectric tilt sensing switch U1 is turned off, the photoelectric tilt sensing switch U1 outputs a high-level signal, the voltage at the gate of the NMOS tube Q1 is pulled high, the NMOS tube Q1 is turned on, the level of the transmission pin of the master control circuit unit 110 is pulled low, and the master control circuit unit 110 controls the power conversion circuit unit 120 to output the first charging power; when the bottom surface 210 of the shell 200 is tilted, i.e., the side surface 220 is laid against the support platform, the photoelectric tilt sensing switch U1 is turned on, outputs a low-level signal, the voltage at the gate of the NMOS tube Q1 is pulled low, the NMOS tube Q1 is turned off, the level of the transmission pin of the master control circuit unit 110 is high, and the master control circuit unit 110 controls the power conversion circuit unit 120 to output the second charging power, thereby realizing charging work with the second charging power when the side surface 220 with a larger area is laid against the support platform.

[0046] Further, the level inversion circuit unit 150 further includes a fourth resistor R4, one end of the fourth resistor R4 is connected to the gate of the NMOS tube Q1, and the other end is grounded.

[0047] The fourth resistor R4 serves as a pull-down resistor, which can pull down the gate of the NMOS tube Q1 to a low potential, preventing the NMOS tube Q1 from being mistakenly turned on without a driving signal.

[0048] Further, the level inversion circuit unit 150 further includes a fifth resistor R5, the fifth resistor R5 is connected in series between the source of the NMOS tube Q1 and the transmission pin of the master control circuit unit 110.

[0049] The fifth resistor R5 can limit the current flowing to the master control circuit unit 110, avoiding damage to the master control circuit unit 110 due to excessive current.

[0050] Referring to Figure 3 , the present application provides a preferred embodiment of the first power supply unit 140.

[0051] The first power supply unit 140 comprises a first voltage stabilizing chip U2, a first capacitor C1 and a second capacitor C2. The voltage output end of the first voltage stabilizing chip U2 is connected with one end of the first resistor R1, and the voltage input end is connected with an external power supply. The first capacitor C1 is connected in series between the voltage input end and the ground end of the first voltage stabilizing chip U2. The second capacitor C2 is connected in series between the voltage output end and the ground end of the first voltage stabilizing chip U2.

[0052] The first voltage stabilizing chip U2 can provide a constant output voltage, and the fluctuation of the input voltage will not affect the output voltage. The first voltage stabilizing chip U2 can provide a stable power supply voltage for the subsequent circuit components, so as to avoid damage of the components due to voltage fluctuation. The first capacitor C1 can filter the voltage input by the first voltage stabilizing chip U2, so as to reduce the ripple and smooth the input. The second capacitor C2 can filter the voltage output by the first voltage stabilizing chip U2, so as to reduce the ripple and smooth the output. The first voltage stabilizing chip U2 has high integration, and occupies a small circuit volume.

[0053] The first voltage stabilizing chip U2, the first capacitor C1 and the second capacitor C2 are adopted to form the first power supply unit 140, so that the power supply of the photoelectric tilt sensing switch U1 can be realized by a relatively simple circuit, which is conducive to simplifying the circuit structure and miniaturizing the charging device.

[0054] Reference Figure 2 and Figure 3 In the optional embodiment of the present application, the charging control circuit 100 further comprises a second power supply unit 160. The voltage output end of the second power supply unit 160 is connected with the power supply input pin of the main control circuit unit 110, and the voltage input end is connected with an external power supply.

[0055] The second power supply unit 160 can provide a power supply voltage for the main control circuit unit 110, so as to ensure the normal work of the main control circuit unit 110.

[0056] Reference Figure 3 The present application provides a preferred embodiment of the second power supply unit 160.

[0057] The second power supply unit 160 comprises a second voltage stabilizing chip U3, a third capacitor C3 and a fourth capacitor C4. The voltage output end of the second voltage stabilizing chip U3 is connected with the power supply input pin of the main control circuit unit 110, and the voltage input end is connected with an external power supply. The third capacitor C3 is connected in series between the voltage input end and the ground end of the second voltage stabilizing chip U3. The fourth capacitor C4 is connected in series between the voltage output end and the ground end of the second voltage stabilizing chip U3.

[0058] The second voltage stabilizing chip U3 can provide a constant output voltage, and the input voltage fluctuation will not affect it. The second voltage stabilizing chip U3 can provide a stable power supply voltage for the main control circuit unit 110, and avoid damaging components due to voltage fluctuation. The third capacitor C3 can filter the voltage input by the second voltage stabilizing chip U3, and reduce ripples and smooth the input. The fourth capacitor C4 can filter the voltage output by the second voltage stabilizing chip U3, and reduce ripples and smooth the output. The second voltage stabilizing chip U3 has high integration and occupies a small circuit volume.

[0059] The second power supply unit 160 is composed of the second voltage stabilizing chip U3, the third capacitor C3 and the fourth capacitor C4. The power supply of the main control circuit unit 110 is realized by a relatively simple circuit, which is conducive to simplifying the circuit structure and miniaturizing the charging device.

[0060] Reference Figures 1 to 4 The application also provides a charging device, which comprises a shell 200 and a charging control circuit 100 as described above. The shell 200 is provided with a bottom surface 210 and a plurality of side surfaces 220 adjacent to the bottom surface 210. The area of each side surface 220 is smaller than that of the bottom surface 210. The bottom surface 210 and the plurality of side surfaces 220 can be used to abut against an external support platform, so that the charging device is supported on the support platform in a use state. The angle detection unit 130 of the charging control circuit 100 is used to detect the inclination state of the bottom surface 210 of the shell 200 and feed back a level signal to the main control circuit unit 110.

[0061] The charging control circuit 100 of the charging device in the embodiment of the application is provided with the main control circuit unit 110, the power conversion circuit unit 120 and the angle detection unit 130. The angle detection unit 130 is used to detect the inclination state of the bottom surface 210 of the shell 200 with a small area and feed back a level signal to the main control circuit unit 110. The main control circuit unit 110 controls the power conversion circuit unit 120 to output the first charging power and the second charging power based on the level signal. The first charging power can be output when the bottom surface 210 with a small area of the shell 200 abuts against the support platform. The second charging power, which is smaller than the first charging power, can be output when the side surface 220 with a large area abuts against the support platform. The working temperature accumulation of the charging device when the side surface 220 with a large area abuts against the support platform is avoided. The charging device works in a safe temperature state, the service life of the charging device is improved, and the safety hazard is reduced.

[0062] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, but not limit them, and for those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced equivalently; all these modifications and replacements should belong to the protection scope of the claims of the present application.

Claims

1. A charge control circuit, characterized by comprising: The charging control circuit is applied to a charging device, the charging device comprises a shell, the shell is provided with a bottom surface and a plurality of side surfaces adjacent to the bottom surface, and the areas of the plurality of side surfaces are all smaller than the area of the bottom surface; the bottom surface and the plurality of side surfaces can all be used to abut against an external support platform, so that the charging device is supported on the support platform in a use state; the charging control circuit comprises a main control circuit unit, a power conversion circuit unit and an angle detection unit; the angle detection unit is used to detect the inclination state of the bottom surface of the shell and feed back a level signal to the main control circuit unit; the main control circuit unit is used to control the power conversion circuit unit to output a first charging power or a second charging power based on the level signal; the first charging power is greater than the second charging power.

2. The charge control circuit according to claim 1, characterized by, The charging control circuit further comprises a first power supply unit; the angle detection unit comprises a photoelectric tilt sensing switch, a first resistor and a second resistor; the first resistor is connected in series between the positive electrode of the emitting end of the photoelectric tilt sensing switch and the voltage output end of the first power supply unit; the second resistor is connected in series between the collector of the receiving end of the photoelectric tilt sensing switch and the voltage output end of the first power supply unit; the negative electrode of the emitting end of the photoelectric tilt sensing switch is grounded; the collector of the receiving end is further connected to the transmission pin of the main control circuit unit; the emitter of the receiving end is grounded; the light signal transmission direction of the photoelectric tilt sensing switch is perpendicular to the bottom surface of the shell; and the plurality of side surfaces are all perpendicular to the bottom surface.

3. The charge control circuit according to claim 2, characterized by The charging control circuit further comprises a level inversion circuit unit, which is arranged between the transmission pin of the main control circuit unit and the collector of the receiving end of the photoelectric tilt sensing switch.

4. The charge control circuit according to claim 3, characterized by The level inversion circuit unit comprises an NMOS tube and a third resistor; the third resistor is connected in series between the gate of the NMOS tube and the collector of the receiving end of the photoelectric tilt sensing switch; the drain of the NMOS tube is connected to the transmission pin of the main control circuit unit; and the source is grounded.

5. The charge control circuit according to claim 4, characterized by The level inversion circuit unit further comprises a fourth resistor; one end of the fourth resistor is connected to the gate of the NMOS tube; and the other end is grounded.

6. The charge control circuit according to claim 5, characterized by The level inversion circuit unit further comprises a fifth resistor; the fifth resistor is connected in series between the source of the NMOS tube and the transmission pin of the main control circuit unit.

7. The charge control circuit according to claim 2, wherein The first power supply unit comprises a first voltage stabilizing chip, a first capacitor and a second capacitor; the voltage output end of the first voltage stabilizing chip is connected to one end of the first resistor; the voltage input end is connected to an external power supply; the first capacitor is connected in series between the voltage input end and the ground end of the first voltage stabilizing chip; and the second capacitor is connected in series between the voltage output end and the ground end of the first voltage stabilizing chip.

8. The charging control circuit according to any one of claims 1 to 7, characterized by, The charging control circuit further comprises a second power supply unit; the voltage output end of the second power supply unit is connected to the power input pin of the main control circuit unit; and the voltage input end is connected to an external power supply.

9. The charge control circuit according to claim 8, characterized by The second power supply unit comprises a second voltage stabilizing chip, a third capacitor and a fourth capacitor, a voltage output end of the second voltage stabilizing chip is connected to a power input pin of the main control circuit unit, a voltage input end is connected to an external power supply, the third capacitor is connected in series between the voltage input end and a ground end of the second voltage stabilizing chip, and the fourth capacitor is connected in series between the voltage output end and the ground end of the second voltage stabilizing chip.

10. A charging device, characterized by The charging control circuit comprises a housing and a charging control circuit as claimed in any one of claims 1-9, the housing is provided with a bottom surface and a plurality of side surfaces adjacent to the bottom surface, and the area of each of the plurality of side surfaces is smaller than the area of the bottom surface, the bottom surface and the plurality of side surfaces can be used to abut against an external support platform, so that the charging device is supported on the support platform in a use state, and the angle detection unit of the charging control circuit is used to detect the inclination state of the bottom surface of the housing and feed back a level signal to the main control circuit unit.

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