Charging device

Abstract

The utility model provides a charging device, which is used for carrying out charging control on electronic equipment and comprises a first control module and a second control module, the first control module is respectively connected with a first charging interface of the electronic equipment, a power management controller of the electronic equipment and the second control module, and the second control module is also respectively connected with the first charging interface, the power management controller and the direct-current power supply; the first control module is used for sending adapter power information to the power management controller when detecting that the first charging interface is connected with the adapter, so that the power management controller configures a power supply mode based on the adapter power information; when the first control signal is received, the adapter is controlled to charge the electronic equipment through the first charging interface based on the power supply mode; the second control module is used for outputting a first control signal when the voltage of the DC power supply is greater than or equal to a preset threshold. The design is simplified, and the charging efficiency and reliability of the electronic equipment are improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electronic circuit technology, and in particular to a charging device. Background Art

[0002] Currently, mainstream laptop computers on the market are usually charged using the DC / AC method, where DC represents battery charging and AC is generally charged by an adapter, mainly with square ports, round ports, and Type C (PD control) interfaces. However, existing charging solutions have many defects. First, the charging efficiency of most adapters is slow, which may be due to power limitations, mismatching of charging protocols, and internal circuit design. At the same time, poor compatibility, inconsistent interfaces, incompatible protocols, and voltage and current adaptation issues make it difficult for laptops of different brands and models to use universal adapters. Secondly, the interface function is single and is mainly used for charging. It cannot realize extended functions such as data transmission and video output, which increases the complexity of user use. Finally, the design is cumbersome and cannot meet universal standards, which brings inconvenience to users and increases the cost of use and the burden of carrying. Utility Model Content

[0003] The embodiments of the present application provide a charging device that independently controls the start of charging, simplifies the design, and improves the efficiency and reliability of charging of electronic devices.

[0004] An embodiment of the present application provides a charging device, which is used to control the charging of an electronic device, and includes a first control module and a second control module; the first control module is respectively connected to the first charging interface of the electronic device, the power management controller of the electronic device, and the second control module, and the second control module is also respectively connected to the first charging interface, the power management controller, and a DC power supply; the first control module is used to send adapter power information to the power management controller when detecting that the first charging interface is connected to the adapter, so that the power management controller configures a power supply mode based on the adapter power information; and when receiving a first control signal, control the adapter to charge the electronic device through the first charging interface based on the power supply mode; the second control module is used to output the first control signal when the voltage of the DC power supply is greater than or equal to a preset threshold.

[0005] In some embodiments, the first control module includes a control chip HUSB238, a resistor R387, and a resistor R388; the CC1 pin of the control chip HUSB238 is connected to the first charging interface through the resistor R387, and the CC2 pin of the control chip HUSB238 is connected to the first charging interface through the resistor R388.

[0006] In some embodiments, the first control module further includes resistors R385 and R386; the SDA pin of the control chip HUSB238 is connected to the power management controller through the resistor R385, and the SCL pin of the control signal HUSB238 is connected to the power management controller through the resistor R386.

[0007] In some embodiments, the first control module further includes a resistor R419; the VIN pin of the control chip HUSB238 is connected to the first charging interface through the resistor R419.

[0008] In some embodiments, the first control module further includes a capacitor C1 and a TVS tube D12; the first end of the capacitor C1 is connected to the first end of the resistor R419, the second end of the capacitor C1 is connected to the third end of the TVS tube D12 and grounded, and the first end and the second end of the TVS tube D12 are both connected to the second end of the resistor R419.

[0009] In some embodiments, the GATE pin of the control chip HUSB238 is connected to the second control module.

[0010] In some embodiments, the first control module further includes a resistor R391 and a resistor R392 ; the ISET pin of the control chip HUSB238 is grounded through the resistor R391 , and the VSET pin of the control chip HUSB238 is grounded through the resistor R392 .

[0011] In some embodiments, the second control module includes a control chip U14, a resistor R90, a resistor R91, a resistor R825, and a resistor R826; the EN_L pin of the control chip U14 is connected to the first end of the resistor R90, the first end of the resistor R91, the second end of the resistor R826, and the first end of the resistor R825, the second end of the resistor R90 is connected to the first control module, the second end of the resistor R91 is connected to the power management controller, the first end of the resistor R826 is connected to the first power supply, and the second end of the resistor R825 is grounded.

[0012] In some embodiments, the VIN pin of the control chip U14 is connected to the DC power supply, and the VBUS pin of the control chip U14 is connected to the first charging interface.

[0013] In some embodiments, the second control module further includes capacitor C5, capacitor C6, capacitor C7, and capacitor C8; the first end of the capacitor C5, the first end of the capacitor C6, the first end of the capacitor C7, and the first end of the capacitor C8 are all connected to the VBUS pin of the control chip U14, and the second end of the capacitor C5, the second end of the capacitor C6, the second end of the capacitor C7, and the second end of the capacitor C8 are all grounded.

[0014] Different from the prior art, the present invention provides a charging device for controlling the charging of an electronic device. The device includes a first control module and a second control module. The first control module is connected to a first charging port of the electronic device, a power management controller of the electronic device, and a second control module, respectively. The second control module is further connected to the first charging port, the power management controller, and a DC power supply. The first control module is configured to, upon detecting that the first charging port is connected to an adapter, send adapter power information to the power management controller, so that the power management controller configures a power supply mode based on the adapter power information. The first control module is configured to, upon receiving a first control signal, control the adapter to charge the electronic device through the first charging port based on the power supply mode. The second control module is configured to output the first control signal when the voltage of the DC power supply is greater than or equal to a preset threshold. The charging device of the present invention achieves independent control of charging startup through the interaction between the first control module and the second control module, specifically by detecting the adapter and sending power information to the power management controller to configure the power supply mode, and by the second control module outputting a control signal when the DC power supply voltage meets the preset threshold. This simplifies the design and improves the efficiency and reliability of electronic device charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0016] Figure 1 This is a structural block diagram of a charging device provided in one embodiment of the present application;

[0017] Figure 2 is a schematic diagram of the circuit structure of the first charging interface;

[0018] Figure 3 1 is a schematic diagram of the circuit structure of a first control module provided in one embodiment of the present application;

[0019] Figure 41 is a schematic diagram of the circuit structure of the second control module provided in one embodiment of the present application;

[0020] Figure 5 is a diagram showing the relationship between the voltage of the DC power supply, the adapter voltage, and the signal output by the second control module provided in one embodiment of the present application;

[0021] Figure 6 This is a schematic diagram of the circuit structure of the discharge circuit in the chip of the first control module provided in one embodiment of the present application. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0023] The technical features involved in the various embodiments of the present application described below do not conflict with each other and can be combined with each other.

[0024] When an element is referred to as being “connected to” another element, it can be directly connected to the other element, or one or more intervening elements may be present therebetween.

[0025] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "first," "second," and the like generally distinguish objects of a class and do not limit the number of objects. For example, the first object may be one or more.

[0026] See also Figure 1 , Figure 1 It is a structural block diagram of a charging device 10 provided in one embodiment of the present application.

[0027] An embodiment of the present application provides a charging device 10 , which is used to control charging of an electronic device 20 . The charging device 10 includes a first control module 11 and a second control module 12 .

[0028] Among them, the first control module 11 is respectively connected to the first charging interface 21 of the electronic device 20, the power management controller 22 of the electronic device 20, and the second control module 12, and the second control module 12 is also respectively connected to the first charging interface 21, the power management controller 22, and the DC power supply 30.

[0029] Specifically, the first control module 11 is configured to, upon detecting that the first charging port 21 is connected to an adapter (not shown), send adapter power information to the power management controller 22, so that the power management controller 22 configures a power supply mode based on the adapter power information. Upon receiving a first control signal, the first control module 11 controls the adapter to charge the electronic device 20 via the first charging port 21 based on the power supply mode. The second control module 12 is configured to output a first control signal when the voltage of the DC power supply 30 is greater than or equal to a preset threshold.

[0030] In this embodiment, the electronic device 20 refers to a device that needs to be charged. In modern life, this can be a variety of portable or non-portable electronic devices, such as laptops, tablets, etc. These devices contain components such as batteries and need to obtain power from an external power source to replenish the power in order to maintain normal operation. The electronic device 20 has different power requirements and charging characteristics. For example, a laptop usually has a large battery capacity and relatively high power consumption, so it needs to adapt to a charging solution with corresponding power when charging. At the same time, different types of electronic devices may support different charging interfaces and charging protocols.

[0031] The first charging interface 21 is an interface on the electronic device 20 for connecting to an external charging device (such as an adapter). It is the entrance for power to be transferred from an external power source to the internal battery of the electronic device. Figure 2 As shown, where Figure 2 As shown, the first charging interface 21 may include a Type-C interface, TVS diodes TVS1 and TVS diodes TVS2. The Type-C interface has a smaller size, supports higher power transmission (such as through the USB PD protocol), and may also support multiple functions such as data transmission and video output.

[0032] The power management controller 22 is a key component within the electronic device 20, responsible for managing the electronic device's power-related functions. A laptop computer's embedded controller (EC) can be used as the power management controller 22. The EC is a highly integrated chip, typically soldered directly to the motherboard of an electronic device (such as a laptop). It is located close to other key components, such as the battery port and charging port, to effectively monitor and control power management-related signals. It connects to the first charging port to obtain charging-related signals and information. For example, when an external adapter is connected via the first charging port, the EC can detect the connection event through the first control module 12 and obtain relevant power information. It also connects to hardware components such as the battery and other internal circuits (such as various voltage regulation circuits on the motherboard), thereby achieving comprehensive control of the entire electronic device's power system. In this embodiment, it configures the power supply mode based on adapter power information received from the first control module 11. For example, when receiving power information from a high-power adapter, it may configure the power supply mode to fast charge, adjusting the voltage and current parameters of the electronic device's internal circuits to achieve efficient charging. At the same time, the power management controller 22 may also be responsible for monitoring the battery's power level, temperature and other conditions to prevent overcharging, overheating and other conditions from occurring during the charging process, so as to protect the safety of the battery and the entire electronic device.

[0033] An adapter is an external device whose primary function is to convert AC power into DC power suitable for charging electronic devices. The adapter then connects to the electronic device's charging port to provide power to the device. Adapters come in different power specifications, with common options including 45W, 65W, 90W, and 100W. Adapters of different power levels offer varying charging speeds. Furthermore, the adapter must adhere to specific charging protocols, such as the USB PD protocol (for adapters with a Type-C interface), to ensure compatibility with electronic devices and enable proper power transmission and charging control.

[0034] The adapter power information may be the adapter's PDO (Power Delivery Object, which includes the adapter's power information). The adapter power information may include power value, voltage specification, current specification, power adjustment capability data, and other related information.

[0035] Power supply mode refers to the different charging methods and parameter combinations set by the power management controller for electronic devices based on the power information of the adapter. These mainly include the following possible scenarios: fast charging mode, normal charging mode, and trickle charging mode. When the adapter power is high and the electronic device supports fast charging, the power management controller may be configured for fast charging mode. In this mode, a higher charging voltage and a larger charging current are used to speed up battery charging. If the adapter power is low or the electronic device does not support fast charging, the power management controller will select normal charging mode. In this mode, the charging voltage and current are relatively low to accommodate low-power adapters or protect the battery. When the battery is nearly fully charged, the power management controller may switch to trickle charging mode, in which the battery is charged with a very low current to prevent overcharging.

[0036] The first control signal is a level signal that is output by the second control module 12 under specific conditions (the voltage of the DC power supply 30 is greater than or equal to a preset threshold) and then received by the first control module 11. The primary function of this signal is to instruct the first control module 11 to begin controlling the adapter to charge the electronic device 20. Specifically, when the first control module 11 receives the first control signal, it instructs the adapter to deliver power to the electronic device 20 through the first charging port 21 according to the power supply mode previously configured by the power management controller 22 based on the adapter's power information. If the first control module 11 does not receive the first control signal, it will not control the adapter to deliver power to the electronic device 20.

[0037] See also Figure 3 , Figure 3 Schematic diagram of the circuit structure of the first control module 11 provided in one embodiment of the present application.

[0038] In some embodiments, the first control module 11 includes a control chip HUSB238 , a resistor R387 , and a resistor R388 .

[0039] The CC1 pin of the control chip HUSB238 is connected to the first charging interface 21 through a resistor R387 , and the CC2 pin of the control chip HUSB238 is connected to the first charging interface 21 through a resistor R388 .

[0040] It should be noted that the control chip HUSB238 in the embodiment of the present application is a chip of model HUSB238 and its similar type.

[0041] In some embodiments, the first control module 11 further includes a resistor R385 and a resistor R386.

[0042] The SDA pin of the control chip HUSB238 is connected to the power management controller 22 through a resistor R385 , and the SCL pin of the control signal HUSB238 is connected to the power management controller 22 through a resistor R386 .

[0043] In some embodiments, the first control module 11 further includes a resistor R419 .

[0044] The VIN pin of the control chip HUSB238 is connected to the first charging port 21 via a resistor R419.

[0045] In some embodiments, the first control module 11 further includes a capacitor C1 and a TVS diode D12 .

[0046] Among them, the first end of capacitor C1 is connected to the first end of resistor R419, the second end of capacitor C1 is connected to the third end of TVS tube D12 and grounded, and the first end and the second end of TVS tube D12 are both connected to the second end of resistor R419.

[0047] In some embodiments, the GATE pin of the control chip HUSB238 is connected to the second control module 12 .

[0048] In some embodiments, the first control module 11 further includes a resistor R391 and a resistor R392 .

[0049] The ISET pin of the control chip HUSB238 is grounded via a resistor R391 , and the VSET pin of the control chip HUSB238 is grounded via a resistor R392 .

[0050] like Figure 3 As shown, the control chip HUSB238 first detects whether the external adapter is connected to the first charging interface 21 (Type-C interface) by detecting different voltage signals applied to the CC1 pin and the CC2 pin.

[0051] Specifically, when the first charging interface 21 is not connected to an adapter, the CC1 pin and the CC2 pin of the first charging interface 21 are continuously pulled up and pulled down in a cycle. At this time, the signals detected at the CC1 pin and the CC2 pin are square wave signals.

[0052] When the first charging port 21 is connected to the adapter, and the electronic device 20 where the first charging port 21 is located is charged as the receiving end, the CC pin inside the adapter is directly pulled down to ground through its Rd (pull-down resistor), indicating a low level. At this time, when the first charging port 21 is plugged into the adapter in the normal direction, it is the CC1 pin of the first charging port 21 that is pulled down, i.e., a low level. When the first charging port 21 is plugged into the adapter in the reverse direction, it is the CC2 pin of the first charging port 21 that is pulled down, i.e., a low level.

[0053] When the first charging interface 21 is connected to the adapter, the electronic device 20 where the first charging interface 21 is located acts as a charging device to power other devices, for example, when it is connected to a mobile phone or other device to charge the mobile phone and provide power to the outside. The CC pin inside the adapter is pulled up to the VBUS voltage (bus voltage) and is displayed as a high level. At this time, when the first charging interface 21 is plugged into the adapter in the right direction, it is the CC1 pin of the first charging interface 21 that is pulled up, that is, the high level. When the first charging interface 21 is plugged into the adapter in the reverse direction, it is the CC2 pin of the first charging interface 21 that is pulled up, that is, the high level.

[0054] Then, the power management controller 22 can access the register of the control chip HUSB238 through the I2C bus (Inter-Integrated Circuit), read the adapter power information, and then configure the corresponding adapter current limit, thereby controlling the power supply mode of the first charging interface 21 and realizing fast charging of different power adapters.

[0055] See also Figure 4 , Figure 4 Schematic diagram of the circuit structure of the second control module 12 provided in one embodiment of the present application.

[0056] In some embodiments, the second control module 12 includes a control chip U14 , a resistor R90 , a resistor R91 , a resistor R825 , and a resistor R826 .

[0057] It should be noted that the control chip U14 in the embodiment of the present application is a chip of model KTS1677BEVH-TR or the same type.

[0058] Among them, the EN_L pin of the control chip U14 is connected to the first end of the resistor R90, the first end of the resistor R91, the second end of the resistor R826, and the first end of the resistor R825. The second end of the resistor R90 is connected to the first control module 11, the second end of the resistor R91 is connected to the power management controller 22, the first end of the resistor R826 is connected to the first power supply (+3VALW), and the second end of the resistor R825 is grounded.

[0059] In some embodiments, the VIN pin of the control chip U14 is connected to the DC power supply 30 , and the VBUS pin of the control chip U14 is connected to the first charging interface 21 .

[0060] In some embodiments, the second control module 12 further includes a capacitor C5 , a capacitor C6 , a capacitor C7 , and a capacitor C8 .

[0061] Among them, the first end of capacitor C5, the first end of capacitor C6, the first end of capacitor C7, and the first end of capacitor C8 are all connected to the VBUS pin of the control chip U14, and the second end of capacitor C5, the second end of capacitor C6, the second end of capacitor C7, and the second end of capacitor C8 are all grounded.

[0062] like Figure 3 and Figure 4 As shown, when the signal at the GATE pin of the control chip HUSB238_ is the first control signal (i.e., a low-level signal), the control chip HUSB238 controls the adapter to charge the electronic device. Resistors R826 and R825 divide the voltage, causing the initial state of DCIN_GATE_N (the GATE pin of the control chip HUSB238_) to be a high-level signal. The GATE pin of the control chip HUSB238_ is set to receive the first control signal (a low-level signal) after a POR (Power On Reset).

[0063] like Figure 5 As shown, Figure 5 The horizontal axis is time, and the vertical axis is voltage. The signal (Gate) at the GATE pin of the control chip HUSB238_ is pulled low when the voltage of the DC power supply (DC_IN) is greater than or equal to the preset threshold (for example, 5V), that is, a low-level signal. At this time, the voltage of the first charging interface (Type-C VBUS) starts to have a lower voltage (for example, 5V). Then, according to the charging mode, the charging voltage is increased to a higher voltage (for example, 20V), and fast charging is achieved.

[0064] See also Figure 6 , Figure 6 1 is a schematic diagram of the circuit structure of the discharge circuit in the chip of the first control module 11 provided in one embodiment of the present application.

[0065] like Figure 6 As shown, the discharge circuit includes resistors R394, R393, and a switch Q1. The gate of the switch Q1 is connected to the second control module 12 via resistor R394, the drain of the switch Q1 is connected to the first charging port 21 via resistor R393, and the source of the switch Q1 is grounded.

[0066] It should be noted that the discharge circuit is a discharge circuit built into the control chip HUSB238_. Therefore, the discharge circuit of the electronic device 20 does not need to be repeatedly set, which can save costs.

[0067] In addition, the output of the ISET pin and the VSET pin of the control chip HUSB238 are both adjustable, which means that the charging current and charging voltage of the adapter can be adjusted, which is more flexible.

[0068] An embodiment of the present application provides a charging device for controlling the charging of an electronic device. The charging device includes a first control module and a second control module. The first control module is respectively connected to a first charging interface of the electronic device, a power management controller of the electronic device, and a second control module. The second control module is further respectively connected to the first charging interface, the power management controller, and a DC power supply. The first control module is configured to, upon detecting that the first charging interface is connected to an adapter, send adapter power information to the power management controller, so that the power management controller configures a power supply mode based on the adapter power information. The first control module is configured to, upon receiving a first control signal, control the adapter to charge the electronic device through the first charging interface based on the power supply mode. The second control module is configured to output the first control signal when the voltage of the DC power supply is greater than or equal to a preset threshold. The charging device of the embodiment of the present application achieves independent control of charging startup through the interaction of the first control module and the second control module, specifically by the first control module detecting the adapter and sending power information to the power management controller to configure the power supply mode, and the second control module outputting a control signal when the DC power supply voltage meets the preset threshold. This simplifies the design and improves the efficiency and reliability of electronic device charging.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A charging device, characterized in that: The charging device is used to control the charging of the electronic device, and the charging device includes a first control module and a second control module; The first control module is respectively connected to the first charging interface of the electronic device, the power management controller of the electronic device, and the second control module, and the second control module is also respectively connected to the first charging interface, the power management controller, and the DC power supply; The first control module is configured to send adapter power information to the power management controller when detecting that the first charging interface is connected to the adapter, so that the power management controller configures a power supply mode based on the adapter power information; and upon receiving the first control signal, controlling the adapter to charge the electronic device through the first charging interface based on the power supply mode; The second control module is configured to output the first control signal when the voltage of the DC power supply is greater than or equal to a preset threshold.

2. The charging device according to claim 1, characterized in that The first control module includes a control chip HUSB238, a resistor R387, and a resistor R388; The CC1 pin of the control chip HUSB238 is connected to the first charging interface through the resistor R387, and the CC2 pin of the control chip HUSB238 is connected to the first charging interface through the resistor R388.

3. The charging device according to claim 2, characterized in that The first control module further includes a resistor R385 and a resistor R386; The SDA pin of the control chip HUSB238 is connected to the power management controller through the resistor R385, and the SCL pin of the control signal HUSB238 is connected to the power management controller through the resistor R386.

4. The charging device according to claim 2, characterized in that The first control module further includes a resistor R419; The VIN pin of the control chip HUSB238 is connected to the first charging interface through the resistor R419.

5. The charging device according to claim 4, characterized in that The first control module further includes a capacitor C1 and a TVS tube D12; The first end of the capacitor C1 is connected to the first end of the resistor R419, the second end of the capacitor C1 is connected to the third end of the TVS tube D12 and is grounded, and the first end and the second end of the TVS tube D12 are both connected to the second end of the resistor R419.

6. The charging device according to claim 2, characterized in that The GATE pin of the control chip HUSB238 is connected to the second control module.

7. The charging device according to claim 2, characterized in that The first control module further includes a resistor R391 and a resistor R392; The ISET pin of the control chip HUSB238 is grounded through the resistor R391 , and the VSET pin of the control chip HUSB238 is grounded through the resistor R392 .

8. The charging device according to claim 1, wherein: The second control module includes a control chip U14, a resistor R90, a resistor R91, a resistor R825, and a resistor R826; The EN_L pin of the control chip U14 is connected to the first end of the resistor R90, the first end of the resistor R91, the second end of the resistor R826, and the first end of the resistor R825. The second end of the resistor R90 is connected to the first control module, the second end of the resistor R91 is connected to the power management controller, the first end of the resistor R826 is connected to the first power supply, and the second end of the resistor R825 is grounded.

9. The charging device according to claim 8, characterized in that The VIN pin of the control chip U14 is connected to the DC power supply, and the VBUS pin of the control chip U14 is connected to the first charging interface.

10. The charging device according to claim 9, characterized in that The second control module further includes capacitors C5, C6, C7, and C8; The first end of the capacitor C5, the first end of the capacitor C6, the first end of the capacitor C7, and the first end of the capacitor C8 are all connected to the VBUS pin of the control chip U14, and the second end of the capacitor C5, the second end of the capacitor C6, the second end of the capacitor C7, and the second end of the capacitor C8 are all grounded.

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