Charging apparatus

The present disclosure discloses a charging apparatus. The charging apparatus comprises a power source module, a main control circuit, a voltage booster circuit, an adjusting circuit, and an output port. The charging apparatus is configured to charge a vehicle battery or other consumers through the output port. The power source module is electrically connected to the main control circuit and the voltage booster circuit. The main control circuit is electrically connected to the adjusting circuit and the voltage booster circuit. The main control circuit is configured to output an adjusting signal to the adjusting circuit. The adjusting circuit controls the voltage booster circuit to output a first or second output voltage to the output port, according to the adjusting signal. The second output voltage is greater than the first output voltage. The present disclosure provides a plurality of voltages to meet the vehicle battery.

CROSS REFERENCE TO RELATED APPLICATIONS

This non-provisional patent application claims the benefit of Chinese Patent Application No. 201910328699.7 filed on 23 April. The above is hereby incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to an electronic device, in particular to a charging apparatus.

BACKGROUND

Nowadays, cars have spread to all households. The present cars, even if these cars are energy cars, it will still need a battery. The car needs to a battery for charging the car when to provide electrical energy is started, the car's starting system is powered. Vehicle starter by power supply, spark plug ignition, gasoline pump operation, EH system and other equipment need to be powered by the battery during the ignition start of the engine. The present batteries are generally lead-acid batteries. The lead-acid batteries have a large capacity, generally greater than 35 Ah. But the present emergency batteries are designed to charge the vehicle battery while charging the vehicle equipment. Generally, only one output voltage is provided for the vehicle equipment. However, the output voltage of the in-vehicle device is too low for the output voltage of the lead-acid battery, and the vehicle battery cannot be quickly charged from the power-off state to the start-up state to realize emergency charging.

SUMMARY

The present disclosure provides a charging apparatus to provide a corresponding charging voltage suitable for consumers.

The objective of the present disclosure is achieved by the following technical solutions:

A charging apparatus comprises a main control circuit, a voltage booster circuit electrically connected to the main control circuit, a power source module electrically connected to the main control circuit and the voltage booster circuit, an adjusting circuit, and an output port; the charging apparatus is configured to charge a vehicle battery or other consumers through the output port; the main control circuit is configured to output an adjusting signal to the adjusting circuit; the adjusting circuit is configured to control the voltage booster circuit to output a first or second output voltage to the output port, according to the adjusting signal; the second output voltage is greater than the first output voltage.

Preferably, the charging apparatus further comprises a detection circuit, the detection circuit is electrically connected to the main control circuit, the detection circuit is configured to detect the output port to determine whether the output port is electrically connected to the vehicle battery; when the output port is electrically connected to the vehicle battery, the detection circuit generates a detection signal; when the main control circuit detects the detection signal, the main control circuit sends an adjusting signal to the adjusting circuit, the adjusting circuit controls the voltage booster circuit to output a second output voltage according to the adjusting signal.

Preferably, the detection circuit comprises a first detection resistance, a second detection resistance, and a detection node electrically connected between the first detection resistance and the second detection resistance, the detection node is electrically connected to the main control circuit, the first detection resistance is electrically connected to the output port, the second detection resistance is grounded, the main control circuit is further configured to detect whether the detection node generates the detection signal when the voltage booster circuit is powered off.

Preferably, the adjusting signal comprises a first adjusting signal, the adjusting circuit controls the voltage booster circuit to output the second output voltage according to the first adjusting signal; the charging apparatus further comprises a mode selection switch, the mode selection switch is configured to provides charging modes for users to charge the charging apparatus, the charging modes comprise an auto adjustment mode and a shortcut mode, when the shortcut mode is selected by a user, the main control circuit sends the first adjusting signal to the adjusting circuit; when the auto adjustment mode is selected, the voltage booster circuit is powered by the main control circuit.

Preferably, wherein the auto adjustment mode is selected, the voltage booster circuit is powered off by the main control circuit.

Preferably, the adjusting signal comprises a first adjusting signal and a second adjusting signal, the adjusting circuit comprises an electronic switch, a first feedback resistance, a second feedback resistance, a third feedback resistance, and a feedback node; the feedback node is electrically connected between the first feedback resistance and the second feedback resistance, the electronic switch is electrically connected between the third feedback resistance and the main control circuit, one terminal of the first feedback resistance is electrically connected to the output port, the other terminal of the first feedback resistance is electrically connected to the feedback node, one terminal of the second feedback resistance is electrically connected to the feedback node, the other terminal of the second feedback resistance is grounded, one terminal of the third feedback resistance is electrically connected to the feedback node, the other terminal of the third feedback resistance is electrically connected to the electronic switch; the voltage booster circuit is further electrically connected to the feedback node; when the main control circuit outputs the first adjusting signal, the electronic switch is turned on; when the main control circuit outputs the second adjusting signal, the electronic switch is turned off.

Preferably, the electronic switch is a Field Effect Transistor (FET), a gate of the FET is electrically connected to a pin of the main control circuit, a drain of the FET is electrically connected to one terminal of the third feedback resistance, and a source of the FET is grounded.

Preferably, the voltage booster circuit is configured to detect a voltage of the feedback node and change an output voltage according to the voltage of the feedback node.

Preferably, the charging apparatus further comprises a power supply wire, one terminal of the power supply wire provides a cigar-lighter plug electrically connected to the output port, the cigar-lighter plug comprises an anode trigger point and a cathode trigger point, the anode trigger point and the cathode trigger point latch an anode and a cathode of the output port, respectively, to steady the electrical connection between the cigar-lighter plug and the output port; another terminal of the power supply wire is provided an alligator clip, the alligator clip is configured to be electrically connected to the vehicle battery or other consumers to transfer electrical energy.

Preferably, the main control circuit is further electrically connected to a temperature detection circuit, the temperature detection circuit comprises a thermistance, and two terminals of the thermistance is electrically connected to the main control circuit and is grounded, respectively.

Compared with the prior art, the charging apparatus of the present disclosures provides a plurality voltages for charging a vehicle battery or other consumers; the charging apparatus can select a corresponding voltage to charge the vehicle battery or other consumers; in addition, the temperature detection circuit is used to ensure electricity safety.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Below, embodiments of the present invention will be described in greater detail with reference to the drawings. It should be noted that the embodiment are illustrative rather than limiting the scope of the present invention.

It should be noted that, if not conflicting, each feature in the embodiments of the present invention may be combined with each other, and are all within the protection scope of the present invention. In addition, although the functional modules is divided in the schematic view of the apparatus and the logical sequence is shown in the flowchart, in some other cases, the functional modules can be deviled in a different manner and the steps can be performed in a different logical sequence.

The present disclosure provides a charging apparatus configured to charge a vehicle battery or other consumers. The charging apparatus comprises a power supply for storing electric energy and providing vehicles with the storing electric energy.FIG. 1illustrates that the charging apparatus comprises a power source module10, a main control circuit30, a voltage booster circuit20, an adjusting circuit40, and an output port60. The charging apparatus is configured to be secured to a vehicle battery or other consumers through the output port60. The charging apparatus is also configured to output one output voltage for charging the vehicle battery through the output port60. The main control circuit30is configured to control the adjusting circuit40to output an output voltage suitable for the vehicle battery to reduce charging time and make the vehicle battery return to work as soon as possible.

The power source module10is electrically connected to the main control circuit30and the voltage booster circuit20. The power source module10is configured to provide electric energy for the main control circuit30and the voltage booster circuit20. The voltage booster circuit20is configured to change a voltage provided through the power source module10and output the changed voltage to the output port60. The main control circuit30is electrically connected to the adjusting circuit40and the voltage booster circuit20. The main control circuit30is configured to output an adjusting signal to the adjusting circuit40. The adjusting circuit40is configured to control the voltage booster circuit20to output a first the output voltage or a second the output voltage to the output port60according to the adjusting signal. In at least one exemplary embodiment, the second output voltage is greater than the first output voltage, the first output voltage is a voltage required for charging other consumers, and the second output voltage is a voltage required for charging the vehicle battery. Specifically, a value of the first output voltage is 12V and a value of the second output voltage is 14.5V. Specifically, the power source module10is a lithium battery or another battery module.

Preferably, the charging apparatus further comprises a detection circuit50. The detection circuit50is electrically connected to the main control circuit30and the output port60. The detection circuit50is configured to detect the output port60to determine whether the output port60is electrically connected to the vehicle battery, to output the first output voltage or the second output voltage. When the output port60is electrically connected to the vehicle battery, the detection circuit50generates a detection signal. When the main control circuit30sends the first adjusting signal to the adjusting circuit40when detecting the detection signal, and then the adjusting circuit40controls the voltage booster circuit20to output the second output voltage according to the first adjusting signal.

Preferably,FIGS. 2-3illustrate that the detection circuit50comprises a first detection resistance R32, a second detection resistance R35, and a detection node501electrically connected between the first detection resistance R32and the second detection resistance R35. The detection node501is electrically connected to the main control circuit30. One terminal of the first detection resistance R32is electrically connected to the output port60. One terminal of the second detection resistance R35is electrically connected to the first detection resistance R32, the other terminal of the second detection resistance R35is grounded. The main control circuit30is further configured to detect the detection node501to determine whether the detection signal exists, and determine whether the output port60is electrically connected to the vehicle battery, when the voltage booster circuit20is powered off.

In at least one exemplary embodiment, the adjusting signal comprises a first adjusting signal and a second adjusting signal. The charging apparatus further comprises a mode selection switch S1. The mode selection switch S1is electrically connected to the main control circuit30. The mode selection switch S1provides charging modes for users to charge the charging apparatus. In at least one exemplary embodiment, the charging modes comprise an auto adjustment mode and a shortcut mode. When the shortcut mode is selected by a user, the main control circuit30sends the first adjusting signal to the adjusting circuit40. When the auto adjustment mode is selected, the voltage booster circuit is powered by the main control circuit.

The adjusting circuit40comprises an electronic switch Q12, a first feedback resistance R15, a second feedback resistance R18, a third feedback resistance R28, and a feedback node401. The feedback node401is electrically connected between the first feedback resistance R15and the second feedback resistance R18. The electronic switch Q12is electrically connected between the third feedback resistance R28and the main control circuit30. One terminal of the first feedback resistance R15is electrically connected to the output port60, the other terminal of the first feedback resistance R15is electrically connected to the feedback node401. One terminal of the second feedback resistance R18is electrically connected to the feedback node401, the other terminal of the second feedback resistance R18is grounded. One terminal of the third feedback resistance R28is electrically connected to the feedback node401, the other terminal of the third feedback resistance R28is electrically connected to the electronic switch Q12. The voltage booster circuit20is further electrically connected to the feedback node401. When the main control circuit30outputs the first adjusting signal, the electronic switch Q12is turned on. When the main control circuit30outputs the second adjusting signal, the electronic switch Q12is turned off. Preferably, the electronic switch Q12is a Field Effect Transistor (FET). A gate of the FET is electrically connected to a pin10of the main control circuit30, a drain of the FET Q12is electrically connected to one terminal of the third feedback resistance R28, and a source of the FET is grounded.

In at least one exemplary embodiment, the voltage booster circuit20is configured to detect a voltage of the feedback node401, and is configured to change the voltage of the feedback node401, such as increase or decrease the voltage of the feedback node401. Specifically, in the exemplary embodiment, the voltage booster circuit20comprises a pulse width modulation (PWM) power supply controller U1. The adjusting circuit40is configured to collect the voltage of the output port60. The adjusting circuit40is also configured to feed back the collected voltage to a FB (feedback) port (not shown) of the PWM power supply controller through the feedback node401after collect the voltage of the output port60. The PWM power supply controller is configured to control the output voltage of the voltage booster circuit20. The PWM power supply controller of the voltage booster circuit20is configured to detect a voltage of the feedback node401, to obtain the sampling of the first feedback resistance R15and the second feedback resistance R18, and to determine whether the voltage of the feedback node401reaches a predetermined voltage; if the feedback node401reaches the predetermined voltage, the voltage booster circuit20remains the same output voltage and continuously outputs the output voltage to the output port60. In the present exemplary embodiment, a style of the PWM power supply controller is SC8802.

In at least one exemplary embodiment, the main control circuit30sends the first adjusting signal to a FET Q12, then the FET Q12controls the third feedback resistance R28to be grounded when receiving the first adjusting signal, thus the third feedback resistance R28is connected in parallel with the second feedback resistance R18, thereby enabling to reduce the voltage of the feedback node401, the voltage booster circuit20does not detect the voltage of the feedback node401to reach a predetermined voltage when the voltage of the feedback node401is reduced, the voltage booster circuit20adjusting signal to adjust the voltage of the feedback node401, until the voltage of the feedback node401reaches the predetermined voltage. Thus the feedback node401reaches the predetermined voltage and the voltage of the output port60reaches the second output voltage.

Specifically, when the auto adjustment mode is selected by the user, the voltage booster circuit is powered by the main control circuit, and the voltage booster circuit20adjusts the output voltage of the power source module10to be equal to the first output voltage. When the voltage booster circuit20detects the output voltage of the output port60to reach the first output voltage, an output current of the output port60is reduced slowly reduced, the output voltage is powered off and be delayed a few seconds, the detection circuit50detects whether the output port60generates the voltage, if yes, the detection circuit50determines the output port60to be electrically connected the vehicle battery, and generates the detection signal and sends the detection signal to the main control circuit30, the main control circuit30outputs the first adjusting signal to the FET Q12when receiving the detection signal, the FET Q12is powered on when receiving the first adjusting signal, thereby enabling the third feedback resistance R28to be grounded and is connected in parallel with the second feedback resistance R18; thus the voltage booster circuit20detects sample variation, adjusts the output voltage, and outputs the second output voltage. When the shortcut mode is selected by the user, the main control circuit30directly sends the first adjusting signal to the adjusting circuit40, to enable the voltage booster circuit20to continuously output the second output voltage. When the auto adjustment mode is selected by the user, the voltage booster circuit20is powered of by the main control circuit30.

In at least one exemplary embodiment, the charging apparatus further comprises a temperature detection circuit, the temperature detection circuit is electrically connected to the main control unit30, the temperature detection circuit comprises a thermistance R12connected to a pin2of the main control unit30. When a temperature (such as the temperature of thermistance R12) is detected to be too high, the main control unit30sends an electrical signal to the voltage booster circuit20in time, to stop outputting electrical energy to ensure electricity safety.

In at least one exemplary embodiment, the main control circuit30comprises a control chip U4. In the present exemplary embodiment, the control chip U4is a microcontroller Unit. A pin1and a pin3of the control chip U4of the main control circuit30are electrically connected to a pin DIR (not shown) and a pin CE (not shown) of the PWM power supply controller, respectively. Specifically, the main control circuit30determines that the mode selection switch S1to be triggered to be the auto adjustment mode, the main control circuit30sends electric signals to power on the PWM power supply controller as follows: the pin3of the control chip U4of the main control circuit30sends a first low level signal to the pin CE of the PWM power supply controller, the pin1of the control chip U4of the main control circuit30sends a second high level signal to the pin DIR of the PWM power supply controller, in at least one exemplary embodiment, the electric signals comprises the first low level signal and the second high level signal. The PWM power supply controller receives the first low level signal and the second high level signal, the voltage booster circuit20controls to increase the voltage output by the power source module10, the detection circuit50detects the output voltage output by the power source module10. When the output voltage output by the power source module10is less than 12V, an output current output by the power source module10is constant and the output voltage output by the power source module10is increased slowly through the voltage booster circuit20. When the output voltage output by the power source module10is near 12V, the output current output by the power source module10is reduced slowly, when the detection circuit50detects the output voltage reaches 12V, the output current output by the power source module10is reduced quickly, the output voltage is powered off and is delayed in several seconds. When the detection circuit50detects the voltage to be output by the output port60, the charging apparatus is charging the vehicle battery, the main control circuit30provides a high level voltage 5V for the FET Q12with 5V, to enable the third feedback resistance R28to be grounded, the output voltage is continuously increased to be 14.5V. When the detection circuit50does not detect the voltage output by the output port60, the charging apparatus is charging the consumers, the output voltage stops being increased. In at least one exemplary embodiment, a pin20of the control chip U4of the main control circuit30is electrically connected to a pin ITIM (not shown) of the PWM power supply controller, to determine whether the output current output by the power source module10is constant; when output current output by the power source module10is too heavy, it is necessary to take overcurrent protection in time. When the main control circuit30detects that the mode selection switch S1is triggered to power on the shortcut mode, the main control circuit30sends the electronic signals to the voltage booster circuit20to power on the voltage booster circuit20, and sends the first adjusting signal to the FET Q12to control the voltage booster circuit20to output the output voltage 14.5V. Compared with the auto adjustment mode, the output voltage output through the shortcut mode the voltage is more stable and charges faster. The main control circuit30further comprises a LED1and a LED2, when the auto adjustment mode is selected, the LED1is lighted; and when the shortcut mode is selected, the LED2is lighted.

In at least one exemplary embodiment, the charging apparatus further comprises a power supply wire70.FIG. 4illustrates a circuit diagram of the power supply wire70of the charging apparatus. The power supply wire70is inserted into the output port60to be fixed to the output port60. The power supply wire70is configured to output a current voltage of the charging apparatus when the charging apparatus is boosted or stepped down. The power supply wire70and the output port60is electrically connected to a plug710. The plug710is a cigar-lighter plug. In the present exemplary embodiment, the output port60is a port suitable for the cigar-lighter plug710. The cigar-lighter plug710comprises an anode trigger point711and at least one cathode trigger point712. The anode trigger point711is placed at a tail end of the cigar-lighter plug710. The cigar-lighter plug710comprises two cathode trigger points712, the two cathode trigger points712are placed at two opposite sides of the cigar-lighter plug710, respectively. Each of the anode trigger point711and the two cathode trigger points712is a protruding metal contact, the protruding metal contact is engaged with the metal spring clip601of the output port60, to make the connection between the plug710and the output port60more stable. The cigar-lighter plug710comprises a fuse with 15 A (a maximum current is 15 A), the fuse with15A is used to protect the vehicle battery when the voltage output by the output port60is abnormal. The power supply wire70comprises two alligator clips72, the two alligator clips72are configured to be electrically connected to the vehicle battery or other consumers.

A plurality of voltages provided by the present exemplary embodiment are charging the corresponding vehicle battery. The charging apparatus of the present exemplary embodiment can provide one corresponding voltage suitable for the vehicle battery when detects the vehicle battery. The voltage booster circuit controls the charging apparatus to output constant voltage and current for charging the vehicle battery or consumers through the PWM power supply controller, to avoid the heavy current generated by a battery when the battery is powered on. In addition, the temperature detection circuit is used to ensure electricity safety.

The above embodiments are only the preferred embodiments of the present invention, and do not limit the scope of the present invention. A person skilled in the art may make various other corresponding changes and deformations based on the described technical solutions and concepts. And all such changes and deformations shall also fall within the scope of the present invention.