A mobile power supply

Abstract

The utility model relates to charging equipment technical field especially a kind of mobile power supply, the mobile power supply includes shell, the shell has control circuit in, the control circuit includes: controller;The first temperature module and second temperature module are electrically connected to the controller;The output of the controller is electrically connected with power adjustment module, and it is respectively from the first temperature module and second temperature module received the shell temperature signal and the ambient temperature signal transmission to the power adjustment module, the technical scheme can make the controller according to ambient temperature and the temperature of mobile power supply control panel adjust the charge-discharge power of mobile power supply to solve the mobile power supply in prior art due to its own charging performance and be influenced by ambient temperature, too high or too low temperature can make the battery internal resistance in mobile power supply increase or produce polarization, to affect the effective charging power of mobile power supply.

Description

Technical Field

[0001] This utility model relates to the field of charging equipment technology, and in particular to a mobile power supply. Background Technology

[0002] In today's digital age, smartphones, tablets, smartwatches, and other portable electronic devices have become indispensable tools in people's lives. The widespread use of these devices has led to a growing demand for portable power banks. As a portable energy storage and supply device, a portable power bank can provide emergency charging for electronic devices when users are away from home and cannot immediately access mains power, greatly improving the convenience and battery life of electronic devices.

[0003] However, due to its own charging performance and the influence of ambient temperature, the internal resistance of the battery in the power bank will increase or polarization will occur if the temperature is too high or too low, thus affecting the effective charging power of the power bank.

[0004] Therefore, the aforementioned technical problems need to be solved. content

[0005] In order to overcome the shortcomings of the existing technology, this utility model proposes a mobile power supply, the purpose of which is to enable the controller to adjust the charging and discharging power of the mobile power supply according to the ambient temperature and the temperature of the mobile power supply control board, thereby solving the problem of better charging of the mobile power supply.

[0006] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows:

[0007] A portable power bank includes a housing, within which a control board is located, and the control board has a control circuit, the control circuit comprising:

[0008] Controller;

[0009] The controller is electrically connected to a first temperature module, which is used to detect the temperature of the outer casing and transmit the outer casing temperature signal to the controller.

[0010] The controller is electrically connected to a second temperature module at its input terminal. The second temperature module is used to detect the ambient temperature and transmit the ambient temperature signal to the controller.

[0011] The controller's output is electrically connected to a power adjustment module, and it transmits the received casing temperature signal and ambient temperature signal to the power adjustment module.

[0012] Furthermore, the power adjustment module includes a power negotiation submodule;

[0013] The power negotiation submodule has a power control terminal and a power negotiation terminal;

[0014] The power control terminal and the controller are connected in a two-way communication manner.

[0015] The power negotiation terminal has a bidirectional communication connection with an adaptive input / output switching interface.

[0016] Furthermore, the power adjustment module also includes a boost / boost sub-module;

[0017] The boost / lift submodule has a control terminal, a power connection terminal, and a battery connection terminal;

[0018] The control terminal and the controller have a bidirectional communication connection;

[0019] The power connection terminal and the adaptive input / output switching interface are connected bidirectionally.

[0020] The battery connector has a bidirectional communication connection to a battery.

[0021] Furthermore, the signal output terminal of the battery is electrically connected to the controller.

[0022] Furthermore, the controller is electrically connected to an external interaction module;

[0023] Furthermore, the external interaction module includes a button submodule;

[0024] The button submodule includes a button unit and a button circuit unit;

[0025] The button unit is disposed on the surface of the housing, the input terminal of the button circuit unit is connected to the button unit, and the output terminal of the button circuit unit is connected to the controller.

[0026] Furthermore, the external interaction module also includes a communication submodule;

[0027] The communication submodule includes a Bluetooth connection unit and a wireless connection unit.

[0028] Furthermore, the controller is electrically connected to a working status indication module.

[0029] Furthermore, the first temperature module is disposed on the inner wall of the housing.

[0030] Furthermore, the first temperature module is positioned between 0.2 cm and 3 cm from the surface of the control panel.

[0031] The beneficial effects of this utility model are:

[0032] This utility model discloses a portable power bank, including a housing, a control board inside the housing, and a control circuit on the control board. The control circuit includes a controller; the controller is electrically connected to a first temperature module, which detects the temperature of the housing and transmits the housing temperature signal to the controller; the input terminal of the controller is electrically connected to a second temperature module, which detects the ambient temperature and transmits the ambient temperature signal to the controller; the output terminal of the controller is electrically connected to a power adjustment module, and transmits the received housing temperature signal and ambient temperature signal to the power adjustment module. This technical solution enables the controller to adjust the charging and discharging power of the portable power bank according to the ambient temperature and the temperature of the portable power bank control board, thereby solving the problem that in the prior art, due to the charging performance of the portable power bank itself and the influence of ambient temperature, excessively high or low temperatures will increase the internal resistance of the battery in the portable power bank or cause polarization, thus affecting the effective charging power of the portable power bank. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the portable power bank of this utility model;

[0034] Figure 2 This is a schematic diagram of the internal circuit structure of the portable power supply of this utility model;

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Casing, 2-Control board, 21-Controller, 22-First temperature module, 23-Second temperature module, 24-Power adjustment module, 241-Power negotiation submodule, 242-Boost / buck voltage submodule, 25-Adaptive input / output switching interface, 26-External interaction module, 261-Button submodule, 2611-Button unit, 2612-Button circuit unit, 262-Communication submodule, 2621-Bluetooth connection unit, 2622-Wireless connection unit, 27-Working status prompt module. Detailed Implementation

[0037] The following will be combined with the appendix Figure 1 To be continued Figure 2 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0038] In existing technologies, the charging performance of power banks is affected by their own charging characteristics and ambient temperature. At excessively high or low temperatures, the internal resistance of the battery increases or polarization occurs. This leads to a decrease in the effective charging power of the power bank, slower charging speed, and reduced efficiency, failing to meet users' demands for fast and efficient charging and severely impacting the user experience. This technical solution aims to address the problem of the effective charging power of power banks being affected by temperature factors, enabling power banks to maintain good charging performance under various temperature environments.

[0039] Detailed, such as Figures 1 to 2 As shown, a portable power bank includes a housing 1. The surface of the housing 1 has at least one adaptive input / output interface for connecting to an external device. The housing 1 contains a control board 2, which is used to maintain the normal operation of the portable power bank. The control board 2 is also electrically connected to a battery 3, which is used to provide energy storage or charging output for the portable power bank.

[0040] In detail, the control board 2 has a control circuit, which is electrically connected to an adaptive input / output switching interface 25. The adaptive input / output switching interface 25 is used to connect to external devices.

[0041] The control circuit includes a controller 21; the controller 21 is used to coordinate the normal operation of each module.

[0042] The signal output terminal of the battery 3 is electrically connected to and controlled by the controller 21 to provide energy storage and output power for the mobile power supply.

[0043] The output of the controller 21 is bidirectionally electrically connected to a power adjustment module 24. The power adjustment module 24 cooperates with the adaptive input / output switching interface 25 to adjust the charging and discharging voltage and power of external devices. In this embodiment, the power adjustment module 24 includes a power negotiation submodule (model CH32X035) and a buck-boost module (model SC8815). The adaptive input / output switching circuit 25 is a USB-C PD fast charging interface. In actual use, the adaptive input / output switching interface 25 cooperates with the power adjustment module 24 to identify whether the external device is a power supply device or a power receiving device.

[0044] The controller 21 is electrically connected to a first temperature module 22, which detects the temperature of the outer casing 1 and transmits the temperature signal of the outer casing 1 to the controller 21. The first temperature module 22 is a temperature sensor, which is located on the inner wall of the outer casing 1, near a heat-generating part of the power bank, such as above the control board 2, with a vertical distance of 0.2 cm to 3 cm from the upper surface of the control board 2. It should be understood that the control board 2 generates a significant amount of heat during operation. Therefore, placing the first temperature module 22 near the control board 2 facilitates the acquisition of its temperature. In another application scenario, the first temperature sensor is located near the battery 3 to acquire the temperature of the battery 3 during operation.

[0045] The controller 21 is electrically connected to a second temperature module 23 at its input terminal. The second temperature module 23 is used to detect the ambient temperature and transmit the ambient temperature signal to the controller 21. The second temperature module 23 is a temperature sensor or a light detection sensor. In one application scenario, the temperature sensor can be placed in the environment outside the power bank or on the surface of the power bank's casing 1 to facilitate the acquisition of the ambient temperature.

[0046] When the power bank is in use, the controller 21 analyzes the received temperature signals of the casing 1 and the ambient temperature signal using a preset algorithm and then transmits them to the power adjustment module 24. The power adjustment module 24 coordinates the output of charging and discharging power that matches the current state of the external device or the power bank based on the received temperature signals of the casing 1, the ambient temperature signal, and the signal from the adaptive input / output switching module.

[0047] Furthermore, the power adjustment module 24 includes a power negotiation submodule 241 and a buck-boost module 242. The power negotiation submodule 241 uses a CH32X035 chip, and the buck-boost module 242 uses an SC8815 chip. The power negotiation submodule has a power control terminal and a power negotiation terminal; the power control terminal is bidirectionally connected to the controller 21; and the power negotiation terminal is bidirectionally connected to the adaptive input / output switching interface 25.

[0048] When in use, when the power bank is connected to an external power source for charging and discharging, the power negotiation terminal detects the type of the connected power device and the supported charging protocols. It should be understood that different power devices (such as chargers, computer USB ports, etc.) may support different charging standards. For example, the USB-PD (Power Delivery) protocol and QC (Quick Charge) protocol, which are widely used in the market, are mature and widely adopted charging protocols.

[0049] The power negotiation terminal transmits the information obtained from the power supply device to the controller 21 connected to it through its power control terminal. The controller 21 is also a key module of the existing circuit structure, and there are many readily available mature components with similar functions on the market, such as the CH582F chip, or other specific microcontroller chips, which can meet the complex charging control requirements of the power bank.

[0050] The first temperature module 22 and the second temperature module 23 are also standard modules in the existing circuit structure. Common temperature sensor chips can be used as the specific implementation components of these modules, and they can accurately detect the corresponding temperature information.

[0051] Based on the above information, the controller 21, combining the shell temperature signal detected by the first temperature module 22 and the ambient temperature signal detected by the second temperature module 23, as well as the current state of the battery 3 inside the power bank (such as charge level and voltage), controls the power adjustment module 24 to output or input a charging power or charging voltage that conforms to the current charging environment through the adaptive input / output switching interface 25. For example, if the ambient temperature is detected to be too high, the controller 21 will reduce the charging power requirement to ensure the safety and lifespan of the battery 3; if the battery 3 has a low charge level and the temperature is suitable, the controller 21 may use a higher charging power to achieve fast charging.

[0052] Furthermore, the power adjustment module 24 also includes a boost / boost sub-module 242; the boost / boost sub-module 242 has a control terminal, a power connection terminal and a battery 3 connection terminal; the control terminal is bidirectionally connected to the controller 21; the power connection terminal is bidirectionally connected to the adaptive input / output switching interface 25; the battery 3 connection terminal is bidirectionally connected to the battery 3.

[0053] The buck-boost module can regulate the voltage during charging and discharging of the power bank. During charging, it adjusts the external power supply voltage to match the charging voltage of battery 3. Regardless of whether the external voltage is higher or lower than the voltage required by battery 3, it can meet the charging requirements through buck or boost processing. During discharging, it converts the output voltage of battery 3 into the voltage required by external devices, enhancing the power bank's compatibility with different devices. Simultaneously, it works in conjunction with the power adjustment module 24 to precisely regulate power according to the instructions of controller 21, stabilizing power output and protecting battery 3 and external devices.

[0054] In summary, when the power bank of this technical solution is in a charging / discharging state (such as charging a mobile phone), the power bank is connected to the mobile phone through the adaptive input / output switching interface 25, and the circuit module recognizes the mobile phone connection. At the same time, the internal circuit of the power bank is activated, and each module begins to work.

[0055] At this time, the first temperature module 22 detects the temperature of the power bank casing 1, and the second temperature module 23 detects the ambient temperature. Both modules transmit the temperature signals to the controller 21, providing a basis for subsequent power adjustment. For example, when charging a mobile phone outdoors in hot weather, the second temperature module 23 detects a high-temperature environment signal, and the first temperature module 22 detects a temperature rise signal in the power bank casing 1, both of which are transmitted to the controller 21.

[0056] The battery 3 transmits its own power, voltage and other status information to the controller 21 at its signal output terminal.

[0057] After receiving the temperature signal, battery 3 status information, and mobile phone charging demand information, the controller 21 controls the power adjustment module 24 to output or input a charging power or charging voltage that conforms to the current charging environment through the adaptive input / output switching interface 25. If the battery 3 has sufficient power, the temperature is suitable, and the mobile phone supports fast charging, the controller 21 instructs the power adjustment module 24 to increase the charging and discharging power.

[0058] In one usage scenario, for example, when the power bank is discharging, the adaptive input / output switching interface 25, under the coordination of the power negotiation submodule 241, identifies that the device plugged into the power bank that needs to be charged is a mobile phone. The maximum charging power that the mobile phone can support is 30W. However, the controller 21, based on the current temperature signal and battery status information, determines that the charging power of the power bank can reach 40W. Then, according to the instructions of the controller 21, the power negotiation submodule 241 and the buck-boost module cooperate with the adaptive input / output switching interface 25 through their power negotiation terminal and power connection terminal respectively to adjust the output power to the maximum charging power of 30W that the mobile phone can support.

[0059] In another usage scenario, when the power bank is charging, the adaptive input / output switching interface 25 communicates with the external power source under the coordination of the power negotiation submodule 241. Based on the power negotiation result, it adjusts its own state to receive electrical energy input from the external power source and distributes the energy to the buck-boost submodule 242 for processing. On one hand, the buck-boost submodule 242 increases or decreases the input voltage according to the negotiation result and the controller 21's instructions, adapting the voltage to the charging needs of the power bank's battery 3.

[0060] On the other hand, the power negotiation submodule 241, according to the instructions of the controller 21, cooperates with the adaptive input / output switching interface 25 to negotiate power with the external power supply and adjust the charging power.

[0061] Meanwhile, the power connection terminal in the power adjustment module 24 transmits the processed electrical energy to the battery 3, whereby the battery 3 converts the electrical energy into chemical energy and stores it. Simultaneously, the battery 3 feeds back its real-time status to the controller 21 via its signal output terminal, and the controller 21 determines whether the power bank is fully charged based on the real-time status information of the battery 3.

[0062] Furthermore, the controller 21 is electrically connected to an external interaction module 26; the external interaction module 26 includes a button submodule 261 and a communication submodule 262. The external interaction module 26 is used to receive external information and transmit the external information to the controller 21. The controller 21 coordinates the normal operation of each module according to the received external information.

[0063] The external interaction module 26 includes a button submodule 261; the button submodule 261 includes a button unit 2611 and a button circuit unit 2612; the button unit 2611 is disposed on the surface of the housing 1, the input terminal of the button circuit unit 2612 is connected to the button unit 2611, and the output terminal of the button circuit unit 2612 is connected to the controller 21.

[0064] In practical applications, multiple button units 2611 may be used. For example, one button unit 2611 may be for comfort mode, and another button unit 2611 may be for standard mode. It should be noted that comfort mode refers to an ambient temperature, such as 26℃-40℃ in summer. The power bank is designed to operate within a preset temperature threshold range, such as 36℃, which corresponds to a charging power of 9V2A. Therefore, regardless of the charging power of the external device connected, the control system will output a control signal to the power adjustment module 24 at a charging power not exceeding 9V2A, ensuring that the power adjustment module 24 discharges at a 9V2A charging power. This guarantees both effective and safe discharge of the power bank.

[0065] It should be understood that the standard mode represents an additional temperature threshold for the power bank. When the user presses the standard mode button, the power bank operates on the same principle as the comfort mode, which will not be elaborated upon here.

[0066] In summary, the user can press different button units 2611 to make the power bank charge in a mode that conforms to the comfort mode or the standard mode.

[0067] The external interaction module 26 further includes a communication submodule 262; the communication submodule 262 has a Bluetooth connection unit 2621 and a wireless connection unit 2622. It should be understood that the communication submodule 262 is used to enable the power bank to communicate with external devices. These external devices include thermometers with communication functions or smart mobile devices, etc.

[0068] Furthermore, the controller 21 is electrically connected to a working status indication module 27. In this embodiment, the working status indication module 27 is an LED indicator or a buzzer. The working status indication module 27 can display the current charging status of the power bank (e.g., whether it is in fast charging or slow charging) and the current temperature status of the power bank.

[0069] In summary, the mobile power bank of this technical solution can adjust the charging and discharging power of the mobile power bank according to the ambient temperature and the temperature of the mobile power bank control board 2. This solves the problem in the prior art where the internal resistance of the battery 3 in the mobile power bank increases or polarization occurs due to the charging performance of the mobile power bank itself and the influence of ambient temperature. This affects the effective charging power of the mobile power bank.

[0070] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A portable power bank, comprising a housing, wherein a control board is located within the housing, and the control board has control circuitry, characterized in that, The control circuit includes: Controller; The controller is electrically connected to a first temperature module, which is used to detect the temperature of the outer casing and transmit the outer casing temperature signal to the controller. The controller is electrically connected to a second temperature module at its input terminal. The second temperature module is used to detect the ambient temperature and transmit the ambient temperature signal to the controller. The output of the controller is electrically connected to a power adjustment module, and the controller transmits the received casing temperature signal and ambient temperature signal to the power adjustment module. The controller is electrically connected to an external interaction module; The external interaction module includes a button sub-module; The button submodule includes a button unit and a button circuit unit; The button unit is disposed on the surface of the housing, the input terminal of the button circuit unit is connected to the button unit, and the output terminal of the button circuit unit is connected to the controller. The external interaction module also includes a communication submodule; The communication submodule includes a Bluetooth connection unit and a wireless connection unit.

2. A portable power bank as described in claim 1, characterized in that: The power adjustment module includes a power negotiation submodule; The power negotiation submodule has a power control terminal and a power negotiation terminal; The power control terminal and the controller are connected in a two-way communication manner. The power negotiation terminal has a bidirectional communication connection with an adaptive input / output switching interface.

3. A portable power bank as described in claim 2, characterized in that: The power adjustment module also includes a boost / boost sub-module; The boost / lift submodule has a control terminal, a power connection terminal, and a battery connection terminal; The control terminal and the controller have a bidirectional communication connection; The power connection terminal and the adaptive input / output switching interface are connected bidirectionally. The battery connector has a bidirectional communication connection to a battery.

4. A portable power bank as described in claim 3, characterized in that: The signal output terminal of the battery is electrically connected to the controller.

5. A portable power bank as described in claim 1, characterized in that: The controller is electrically connected to a working status indication module.

6. A portable power bank as described in any one of claims 1-5, characterized in that: The first temperature module is located on the inner wall of the housing.

7. A portable power bank as described in claim 3, characterized in that: The first temperature module is positioned between 0.2 cm and 3 cm from the surface of the control panel.

Images