Method and device for controlling power supply chip to supply power

Abstract

The invention discloses a method and a device for controlling a power supply chip to supply power. The method comprises the steps that when first charging equipment and second charging equipment are connected through two charging input interfaces respectively, the equipment types of the first charging equipment and the second charging equipment are detected; determining whether the first charging device and the second charging device support work of a charge pump power supply chip according to the device types of the first charging device and the second charging device; and selectively and electrically coupling the first charging equipment and the second charging equipment to a switch power supply chip and a charge pump power supply chip according to the determination condition, so as to control at least one of the switch power supply chip and the charge pump power supply chip to supply power to the target object. According to the technical scheme, corresponding access charging equipment can be configured for the switch power supply chip and the charge pump power supply chip, so that simultaneous charging of the double power supply chips is realized, the charging speed is increased, and the charging time is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery charging, and in particular to a method and device for controlling a power supply chip to supply power. Background Art

[0002] An existing device for charging a battery may include multiple charging input ports, each of which is used to connect to a charging device such as a charger. Although such a multi-port device supports multiple charging input ports, it only supports charging the battery through a corresponding charging device via one charging input port. When multiple charging input ports are in place at the same time, the device selects one of the charging input ports as the charging input by default, so that the battery charging speed of the target terminal will be limited by the corresponding charging device, and the application of multiple charging input ports is not maximized. Summary of the invention

[0003] The present invention provides a method and device for controlling a power supply chip to supply power, which can solve the problem of limited charging speed in the prior art. Improving these problems will increase the charging speed and save charging time.

[0004] In one aspect of the present invention, a method for controlling a power supply chip to supply power is provided. The method comprises: when a first charging device and a second charging device are connected via two charging input interfaces respectively, detecting the device types of the first charging device and the second charging device, and determining whether the first charging device and the second charging device support the operation of a charge pump power supply chip according to the device types of the first charging device and the second charging device; selectively electrically coupling the first charging device and the second charging device to a switch power supply chip and a charge pump power supply chip respectively according to the determined situation, so as to control at least one of the switch power supply chip and the charge pump power supply chip to supply power to a target object.

[0005] In another aspect of the present invention, a device for controlling a power supply chip to supply power is provided. The device comprises: at least two charging input interfaces, configured to be connected to at least two charging devices respectively; a charging detection unit, configured to detect the device types of the at least two charging devices, and determine whether the at least two charging devices support the operation of the charge pump power supply chip according to the device types; and a charging control unit, configured to selectively electrically couple the at least two charging devices to the switch power supply chip and the charge pump power supply chip respectively according to the determination, so as to control at least one of the switch power supply chip and the charge pump power supply chip to supply power to the target object.

[0006] According to the present invention, when the first charging device and the second charging device are respectively connected via two charging input interfaces, the device types of the two charging devices are detected, and corresponding switch power supply chips or charge pump power supply chips are configured for charging according to the device types of the two charging devices. In this way, corresponding access charging devices can be configured for the switch power supply chip and the charge pump power supply chip to realize simultaneous charging of the dual power supply chips, thereby speeding up the charging speed and saving charging time. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A flow chart of a method for controlling a power supply chip to supply power according to an embodiment of the present invention; Figure 2 A schematic diagram of a device for controlling a power supply chip to supply power according to an embodiment of the present invention. DETAILED DESCRIPTION

[0008] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0009] In the prior art, when multiple charging ports are in place at the same time, one charging port is selected by default as the charging input, and the charging speed of the terminal is limited and not maximized.

[0010] In order to solve at least the above technical problems, the present disclosure provides a method for controlling a power supply chip to supply power. When a first charging device and a second charging device are connected via two charging input interfaces respectively, the device types of the first charging device and the second charging device are detected, and whether the first charging device and the second charging device support the operation of a charge pump power supply chip is determined according to the device types of the first charging device and the second charging device; and the first charging device and the second charging device are selectively electrically coupled to a switch power supply chip and a charge pump power supply chip respectively according to the determined situation, so as to control at least one of the switch power supply chip and the charge pump power supply chip to supply power to a target object. In this way, corresponding access charging devices can be configured for the switch power supply chip and the charge pump power supply chip to realize simultaneous charging of dual power supply chips, thereby speeding up the charging speed and saving charging time.

[0011] Hereinafter, the technical solution according to the present disclosure will be described with reference to specific embodiments and in conjunction with the accompanying drawings.

[0012] Figure 1 1 is a flow chart showing a method 100 for controlling a power supply chip to supply power according to an embodiment of the present disclosure. Figure 1 The method 100 includes the following steps 102 to 106.

[0013] In step 102 , when a first charging device and a second charging device are connected via two charging input interfaces respectively, the device types of the first charging device and the second charging device are detected.

[0014] In step 104 , it is determined whether the first charging device and the second charging device support the operation of the charge pump power supply chip according to the device types of the first charging device and the second charging device.

[0015] In step 106, the first charging device and the second charging device are selectively electrically coupled to the switch power supply chip and the charge pump power supply chip, respectively, according to the determination, so as to control at least one of the switch power supply chip and the charge pump power supply chip to supply power to the target object.

[0016] In some embodiments, if both the first charging device and the second charging device support the operation of the charge pump power supply chip, the first charging device with a larger charging power among the first charging device and the second charging device is electrically coupled to the charge pump power supply chip, and the second charging device with a smaller charging power is electrically coupled to the switch power supply chip. In addition, the charge pump power supply chip is controlled to utilize the first charging device, and the switch power supply chip is controlled to utilize the second charging device, while supplying power to the target object. In this way, two charging devices can achieve the same charging effect as a higher-power charging device.

[0017] In some embodiments, if the first charging device supports the operation of the charge pump power supply chip, and the second charging device does not support the operation of the charge pump power supply chip, the first charging device is electrically coupled to the charge pump power supply chip, and the second charging device is electrically coupled to the switch power supply chip. In addition, the charge pump power supply chip is controlled to use the first charging device, and the switch power supply chip is controlled to use the second charging device, while supplying power to the target object. In this way, the second charging device connected to the switch power supply chip can be determined according to the charging power to ensure a higher charging power.

[0018] In some embodiments, the charging parameters of the switch power supply chip are configured according to the charging line resistance and contact resistance of the second charging device and the battery to be charged. In this way, the charging parameters of the switch power supply chip are configured while considering the charging line resistance and the contact resistance voltage difference, further improving the charging speed.

[0019] In some embodiments, if neither the first charging device nor the second charging device supports the operation of the charge pump power supply chip, the first charging device with a larger charging power is electrically coupled to the switch power supply chip, and the switch power supply chip is controlled to use the first charging device to power the target object. In this way, the charging device connected to the switch power supply chip can be determined according to the charging power to ensure a higher charging power.

[0020] In this embodiment, supplying power to the target object includes: supplying power to a system of the target device, or charging a battery of the target device.

[0021] According to the embodiment of the present invention, two charging ports can be charged simultaneously if the conditions are met, which speeds up the charging speed and saves the charging time. Two relatively low-power charging devices can achieve the same charging effect as a relatively high-power charging device. In addition, charging two power supply chips at the same time can make the heat more dispersed and avoid excessive temperature of a single chip.

[0022] Hereinafter, application scenarios of the method and device for controlling a power supply chip to supply power according to an embodiment of the present invention will be described by way of examples.

[0023] Figure 2 Schematic diagram of a device for controlling a power supply chip to supply power according to an embodiment of the present invention. Figure 2 The device includes at least two charging input interfaces 202 , a charging detection unit 204 , a charging control unit 206 , a switch power supply chip 208 and a charge pump power supply chip 210 .

[0024] The at least two charging input interfaces 202 are configured to be connected to at least two charging devices respectively.

[0025] The charging detection unit 204 is configured to detect device types of the at least two charging devices, and determine whether the at least two charging devices support the operation of the charge pump power supply chip according to the device types.

[0026] The charging control unit 206 is configured to selectively electrically couple the at least two charging devices to the switch power supply chip 208 and the charge pump power supply chip 210 respectively according to the determination, so as to control at least one of the switch power supply chip 208 and the charge pump power supply chip 210 to power the target object.

[0027] In this embodiment, two charging input interfaces are provided, namely, charging input interface A and charging input interface B. Figure 2As shown, when the charging input interface A and the charging input interface B are both plugged into corresponding charging devices, the charging detection unit will detect the device types of the two charging devices, and the charging control unit will control the battery charging path according to the device type, that is, control the connection path between the charging device and the switch power supply chip or control the connection path between the charging device and the charge pump power supply chip.

[0028] The charging efficiency of the charge pump power supply chip is high, but it has requirements for the charger. It must support PPS to be used, and software is required to control the output voltage and output current of the charging device to achieve the purpose of charging. The switch power supply chip supports trickle, constant voltage, and constant current charging, and has a lower charging efficiency than the charge pump power supply chip.

[0029] If both charging devices support charge pump charging at the same time, the fast charging conditions are met. The charging detection unit obtains the power supply capabilities of charging device A and charging device B according to the protocol, and the charging control unit selects the device that can currently charge the battery with the maximum power to establish a connection with the charge pump in the charging unit. Assuming that charging device A meets the conditions, charging device A establishes a connection with the charge pump, and charging device B establishes a connection with the switch power supply chip. Charging device A and the switch power supply chip are in an isolated state, and charging device B is in an isolated state with the charge pump. The switch power supply chip configures the charging parameters based on the information of charging device B and the current battery (taking into account the influence of high-current charging line resistance and contact resistance), so that charging device A and charging device B can simultaneously power the system and charge the battery.

[0030] If one of the two charging devices supports charge pump charging and the other does not. Assuming that charging device A supports charge pump charging, charging device A establishes a connection with the charge pump, charging device B establishes a connection with the switch power supply chip, charging device A and the switch power supply chip are in an isolated state, and charging device B is in an isolated state with the charge pump. The switch power supply chip configures the charging parameters according to the information of charging device B and the current battery (considering the influence of high current charging line resistance and contact resistance), so that charging device A and charging device B can simultaneously power the system and charge the battery, and charging device A, the charging control unit and the charge pump module of the charging unit charge the battery according to the battery status and information. Taking 10A charging as an example, the fully charged voltage at the battery end is 4.4V, then the charging voltage of the switch charging IC needs to be set to: battery voltage + charging current * line resistance. Since the voltage point detected by the switch power supply chip includes line resistance, this part of the voltage difference must be taken into account.

[0031] If neither charger supports charge pump charging, the charging detection unit obtains the power supply capabilities of charging device A and charging device B according to the protocol, and the charging control unit selects the device that can currently charge the battery with the maximum charging power to establish a connection with the switch power supply chip in the charging unit. Assuming that charging device A meets the conditions, then charging device A is charging at this time, and charging device B is disconnected from the charging unit.

[0032] When multiple charging input interfaces are plugged into charging devices, such as two USB interfaces and one keyboard base charging, and both meet the charging function, since there is only one switch power supply chip, one of the USB port or the keyboard base is selected according to the input power, and the charging device corresponding to the interface that meets the conditions and has high power is selected. Therefore, in fact, only the charging devices corresponding to the two interfaces are powered at the same time.

[0033] In summary, the method and device for controlling the power supply chip to supply power provided by the present invention detects the device types of the first charging device and the second charging device when the first charging device and the second charging device are connected via two charging input interfaces respectively, and determines whether the first charging device and the second charging device support the operation of the charge pump power supply chip according to the device types of the first charging device and the second charging device; and selectively electrically couples the first charging device and the second charging device to the switch power supply chip and the charge pump power supply chip respectively according to the determined situation, so as to control at least one of the switch power supply chip and the charge pump power supply chip to supply power to the target object. In this way, the corresponding access charging device can be configured for the switch power supply chip and the charge pump power supply chip to realize the simultaneous charging of the dual power supply chips, thereby speeding up the charging speed and saving the charging time.

[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling a power supply chip to supply power, characterized in that: include: When a first charging device and a second charging device are connected via two charging input interfaces respectively, detecting device types of the first charging device and the second charging device; Determine whether the first charging device and the second charging device support the operation of the charge pump power supply chip according to the device types of the first charging device and the second charging device; as well as The first charging device and the second charging device are selectively electrically coupled to the switch power supply chip and the charge pump power supply chip respectively according to the determination, so as to control at least one of the switch power supply chip and the charge pump power supply chip to supply power to a target object.

2. The method according to claim 1, characterized in that Controlling at least one of the switch power supply chip and the charge pump power supply chip to supply power to the target object includes: If both the first charging device and the second charging device support the operation of the charge pump power supply chip, the first charging device with a larger charging power among the first charging device and the second charging device is electrically coupled to the charge pump power supply chip, and the second charging device with a smaller charging power is electrically coupled to the switch power supply chip; and The charge pump power supply chip is controlled to utilize the first charging device, and the switch power supply chip is controlled to utilize the second charging device, and power is supplied to the target object at the same time.

3. The method according to claim 1, characterized in that Controlling at least one of the switch power supply chip and the charge pump power supply chip to supply power to the target object includes: If the first charging device supports the operation of the charge pump power supply chip, and the second charging device does not support the operation of the charge pump power supply chip, electrically coupling the first charging device to the charge pump power supply chip, and electrically coupling the second charging device to the switch power supply chip; and The charge pump power supply chip is controlled to utilize the first charging device, and the switch power supply chip is controlled to utilize the second charging device, and power is supplied to the target object at the same time.

4. The method according to claim 2 or 3, characterized in that: Also includes: The charging parameters of the switch power supply chip are configured according to the charging line resistance and contact resistance of the second charging device and the battery to be charged.

5. The method according to claim 1, characterized in that Controlling at least one of the switch power supply chip and the charge pump power supply chip to supply power to the target object includes: If neither the first charging device nor the second charging device supports the charge pump power supply chip to operate, electrically coupling the first charging device with greater charging power to the switch power supply chip; and The switch power supply chip is controlled to use the first charging device to supply power to the target object.

6. The method according to claim 1, characterized in that Powering the target object includes: Power the target device's system or charge the target device's battery.

7. A device for controlling a power supply chip to supply power, characterized in that: include: At least two charging input interfaces, configured to be connected to at least two charging devices respectively; a charging detection unit, configured to detect device types of the at least two charging devices, and determine whether the at least two charging devices support the operation of the charge pump power supply chip according to the device types; as well as The charging control unit is configured to selectively electrically couple the at least two charging devices to the switch power supply chip and the charge pump power supply chip respectively according to the determination, so as to control at least one of the switch power supply chip and the charge pump power supply chip to supply power to the target object.

8. The device according to claim 7, characterized in that The charging control unit is configured as follows: If the device types of the at least two charging devices both support the operation of the charge pump power supply chip, electrically coupling a first charging device with a larger charging power among the at least two charging devices to the charge pump power supply chip, and electrically coupling a second charging device with a smaller charging power to the switch power supply chip; as well as The charge pump power supply chip is controlled to utilize the first charging device, and the switch power supply chip is controlled to utilize the second charging device, and power is supplied to the target object at the same time.

9. The device according to claim 7, characterized in that The charging control unit is configured as follows: If a first charging device among the at least two charging devices supports the operation of the charge pump power supply chip, and a second charging device among the at least two charging devices does not support the operation of the charge pump power supply chip, electrically coupling the first charging device to the charge pump power supply chip, and electrically coupling the second charging device to the switch power supply chip; as well as The charge pump power supply chip is controlled to utilize the first charging device, and the switch power supply chip is controlled to utilize the second charging device, and power is supplied to the target object at the same time.

10. The device according to claim 8 or 9, characterized in that The charging control unit is further configured to: The charging parameters of the switch power supply chip are configured according to the charging line resistance and contact resistance of the second charging device and the battery to be charged.

11. The device according to claim 7, characterized in that The charging control unit is configured as follows: If the at least two charging devices do not support the charge pump power supply chip to operate, electrically coupling a first charging device with a larger charging power to the switch power supply chip; as well as The switch power supply chip is controlled to use the first charging device to supply power to the target object.

12. The device according to claim 7, characterized in that The charging control unit is configured as follows: At least one of the switch power supply chip and the charge pump power supply chip is controlled to power a system of a target device or to charge a battery of the target device.

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