A modular mobile power supply

Abstract

The present invention provides a modular mobile power supply, which relates to the field of mobile power supplies. The present invention comprises a main circuit module 1 and a power supply module 2. The front and back sides of the main circuit module 1 are respectively provided with a first connection seat and a second connection seat, both of which can be connected to the power supply module 2. The main circuit module 1 is connected with one or two power supply modules 2 to form a single-capacity mobile power supply or a double-capacity mobile power supply, respectively. Only the power supply module 2 is provided with a battery, and the power supply module 2 is detachable, so that a user does not need to carry a dead power supply module 2; the double-capacity mobile power supply is sufficient to fully charge large-capacity devices such as an iPad, and the power supply module 2 does not need to be replaced midway; the main circuit module 1 can fully charge two power supply modules 2 at a time, and a charging seat for connecting multiple power supply modules 2 at the same time does not need to be provided, thereby reducing costs; the single-capacity mobile power supply has two combination modes, which is convenient for users to hold with one hand in their left or right hand.

Description

Technical Field

[0001] This invention relates to the field of portable power banks, and more specifically to a modular portable power bank. Background Technology

[0002] Most portable power banks currently have a fixed capacity. In different usage scenarios, the capacity of the power bank may be too large or too small. If the capacity of the power bank is too large, it means that the user has to carry extra volume and weight. If the capacity of the power bank is too small, it means that the mobile device will run out of power, which will cause inconvenience to the user.

[0003] Currently, there is a type of portable power bank with variable capacity consisting of a main module and several sub-modules. Each of the main module and sub-modules contains a battery, and the capacity can be adjusted by adding or removing sub-modules from the main module. However, since the sub-modules must be connected to the main module to be used, when the main module is out of power, the user has to carry the depleted battery in the main module, which reduces portability.

[0004] Currently, there is a type of power bank consisting of a charging head module and a battery module. The battery module is connected to the charging head module to form the power bank. The battery module is detachable. In different usage scenarios, users solve the problems of insufficient or excessive power bank capacity by carrying an appropriate number of battery modules. However, since the charging head module can only connect to one battery module at a time, the battery capacity of a single battery module is insufficient to charge high-capacity mobile devices, resulting in the inconvenience of replacing the battery module midway. At the same time, since the charging head module can only charge one battery module at a time, when multiple battery modules need to be charged, the inconvenience of replacing the battery module midway will occur. The current solution is to set up a charging dock for multiple battery modules, but this increases the cost.

[0005] Currently, some portable power banks have buttons that are conveniently positioned for right-handed use when held in the right hand, making them easy to hold with one hand. However, when held in the left hand, the buttons are not conveniently positioned for left-handed use, which is inconvenient for left-handed users. Summary of the Invention

[0006] This invention provides a modular portable power bank that overcomes the shortcomings of the aforementioned background technology.

[0007] The technical solution adopted in this invention is:

[0008] The main circuit module is equipped with a first connector and a second connector, both of which can be connected to a power module. The main circuit module is equipped with a discharge circuit, and the power module contains a battery. A first switch and a second switch are respectively installed between the first connector, the second connector and the output terminal of the discharge circuit. The main circuit module can be connected to one power module to form a single-capacity mobile power supply, and the main circuit module can be connected to two power modules to form a double-capacity mobile power supply.

[0009] The first switch includes a first PMOS and a second PMOS, which are connected in reverse series. The first switch controls the conduction and cutoff between the first connector and the discharge circuit. The second switch includes a third PMOS and a fourth PMOS, which are connected in reverse series. The second switch controls the conduction and cutoff between the second connector and the discharge circuit.

[0010] The main circuit module includes a charging circuit, an MCU, buttons, and a power display LED. The MCU, buttons, and power display LED are used to display the remaining power of the power module 2. The MCU is also used to detect whether the first connector and the second connector are connected to the power module. The MCU is also used to detect whether there is an external power input to the charging circuit. The MCU is also used to control the conduction and cutoff of the first PMOS, the second PMOS, the third PMOS, and the fourth PMOS.

[0011] The first connector and the second connector are respectively located on the front and back of the main circuit module. The front and back of the main circuit module have the same shape. The side shape of the main circuit module is a rounded rectangle. The side shape of the power module includes half a rounded rectangle. The side shapes of the single-capacity power bank and the double-capacity power bank are both rounded rectangles.

[0012] The beneficial effects of this invention are:

[0013] This invention solves the problems of fixed-capacity portable power banks. The main circuit module connects to one power module to form a single-capacity portable power bank, and the main circuit module connects to two power modules to form a double-capacity portable power bank. The power modules are detachable, and users can carry an appropriate number of power modules according to different usage scenarios, so there will be no problem of insufficient or excessive portable power bank capacity.

[0014] This invention solves the problem of a portable power bank consisting of a main module and several sub-modules. The main circuit module is connected to the power module to form a portable power bank with single or double capacity. The main circuit module does not contain a battery. When users go out, they only need to carry the main circuit module and the powered power module, without having to carry a dead battery, thus improving portability.

[0015] This invention solves the problem of power banks composed of charging head modules and battery modules. The main circuit module connects two power modules to form a double-capacity power bank, which is sufficient to fully charge high-capacity devices such as iPads, without requiring users to replace power modules midway. When multiple power modules need charging, the main circuit module can connect two power modules simultaneously, charging both power modules at once, reducing the number of times power modules need to be replaced midway, eliminating the need for a charging dock that can charge multiple battery modules at the same time, and reducing costs.

[0016] This invention solves the problem that some portable power banks are inconvenient to hold with one hand on the left. Since the first and second connectors are respectively located on the front and back of the main circuit module, and the front and back of the main circuit module are the same, the side shape of the main circuit module adopts a rounded rectangle and a symmetrical design, and the side shape of the power module adopts a semi-rounded rectangle design. The side shape of the single or double capacity portable power bank composed of the main circuit module and the power module is a rounded rectangle. At the same time, there are two combination methods for the single capacity portable power bank. Users can choose the appropriate combination method according to their own habits, which is convenient for holding with one hand on the left or right. Attached Figure Description

[0017] Figure 1 These are two modules of a modular power bank.

[0018] Figure 2 The power module 2 is connected to the front of the main circuit module 1 to form the first single-capacity mobile power supply.

[0019] Figure 3 The power module 2 is connected to the back of the main circuit module 1 to form a second single-capacity mobile power supply.

[0020] Figure 4 The main circuit module 1 is connected to the power module 2 on both the front and back to form a double-capacity mobile power supply.

[0021] Figure 5 This is a left view of the first single-capacity power bank.

[0022] Figure 6 This is the left view of the second single-capacity power bank.

[0023] Figure 7 This is a left view of a double-capacity power bank.

[0024] Figure 8 This is a top view of main circuit module 1.

[0025] Figure 9 This is a front view of main circuit module 1.

[0026] Figure 10 This is the rear view of main circuit module 1.

[0027] Figure 11 This is the left view of main circuit module 1.

[0028] Figure 12 This is the right view of main circuit module 1.

[0029] Figure 13 This is a front view of power module 2.

[0030] Figure 14 This is the left view of power module 2.

[0031] Figure 15 This is the circuit schematic of power module 2.

[0032] Figure 16 and Figure 17 This is the circuit schematic of main circuit module 1.

[0033] Explanation of reference numerals in the attached figures:

[0034] Main circuit module 1, power supply module 2, LED 3, button 4, front connector 5, front first contact 6, front second contact 7, front third contact 8, rear connector 9, rear first contact 10, rear second contact 11, rear third contact 12, USB charging port 13, USB output port 14, power connector 15, power first contact 16, power second contact 17, power third contact 18. Detailed Implementation

[0035] like Figure 1 As shown, the modular power bank includes a main circuit module 1 and a power module 2.

[0036] like Figure 9 As shown, the front of the main circuit module 1 is provided with a front connector 5, such as... Figure 10 As shown, the back of the main circuit module 1 is provided with a back connector 9, such as... Figure 13 As shown, the power module 2 has a power connector 15 on the front, and the front connector 5 and the back connector 9 can both be connected to the power connector 15.

[0037] like Figure 2 As shown, power module 2 is connected to front connector 5 to form the first single-capacity mobile power supply. Figure 3 As shown, power module 2 is connected to the rear connector 9 to form a second single-capacity mobile power supply. Figure 4 As shown, the front connector 5 and the back connector 9 are both connected to the power module 2 to form a double-capacity mobile power supply.

[0038] like Figure 9As shown, the front connector 5 is provided with a front first contact 6, a front second contact 7, and a front third contact 8; as Figure 10 As shown, the rear connector 9 is provided with a rear first contact 10, a rear second contact 11, and a rear third contact 12; as Figure 13 As shown, the power connector 15 is provided with a first power contact 16, a second power contact 17, and a third power contact 18. When the power module 2 is connected to the front connector 5, the first power contact 16, the second power contact 17, and the third power contact 18 are electrically connected to the first front contact 6, the second front contact 7, and the third front contact 8, respectively. When the power module 2 is connected to the rear connector 9, the first power contact 16, the second power contact 17, and the third power contact 18 are electrically connected to the first rear contact 10, the second rear contact 11, and the third rear contact 12, respectively.

[0039] like Figure 15 As shown, the power module 2 contains a battery. The first power contact 16 is electrically connected to the positive terminal of the battery, and the second power contact 17 and the third power contact 18 are electrically connected to the negative terminal of the battery. Figure 16 and Figure 17 As shown, the main circuit module 1 contains an MCU and first, second, and third diodes. The main circuit module 1 also contains a charging circuit and a boost circuit. The positive terminals of the first, second, and third diodes are electrically connected to the Vin+ terminal of the charging circuit, the first contact 6 on the front, and the first contact 10 on the back, respectively. The negative terminals of the first, second, and third diodes are all electrically connected to the VCC pin of the MCU. The third contact 8 on the front, the third contact 12 on the back, the GND terminal of the charging circuit, the GND terminal of the boost circuit, and the GND terminal of the MCU are all electrically connected together. The power module 2 connected to the front connector 5 and the back connector 9, as well as the external power supply, can all supply power to the MCU.

[0040] like Figure 16 and Figure 17 As shown, a first PMOS and a second PMOS are electrically connected between the Vout+ terminal of the charging circuit and the first contact 6 on the front side. The first and second PMOS are connected in reverse series to form a bidirectional switch. The gates of the first and second PMOS are both electrically connected to the first level output pin of the MCU. The MCU controls the conduction and cutoff of the charging circuit and the first contact 6 on the front side by controlling the level of the first level output pin. A third PMOS and a fourth PMOS are electrically connected between the Vout+ terminal of the charging circuit and the first contact 10 on the back side. The third and fourth PMOS are connected in reverse series to form a bidirectional switch. The gates of the third and fourth PMOS are both electrically connected to the second level output pin of the MCU. The MCU controls the conduction and cutoff of the charging circuit and the first contact 10 on the back side by controlling the level of the second level output pin.

[0041] like Figure 16 and Figure 17 As shown, the main circuit module 1 is equipped with LED3, which is electrically connected to the MCU to display the remaining power of the power module 2. The first and second voltage detection pins of the MCU are electrically connected to the first contact 6 on the front and the first contact 10 on the back, respectively. The first voltage detection pin is used to detect the voltage of the power module 2 connected to the front connector 5, and the second voltage detection pin is used to detect the voltage of the power module 2 connected to the back connector 9. The MCU converts the voltage of the power module 2 into the remaining power.

[0042] like Figure 16 and Figure 17 As shown, the front second contact 7 and the back second contact 11 are electrically connected to the first and second level detection pins of the MCU, respectively. Figure 15 As shown, since the second power contact 17 is electrically connected to the negative terminal of the battery, when the front connector 5 is connected to the power module 2, the MCU will detect a low level on the first level detection pin. When the rear connector 9 is connected to the power module 2, the MCU will detect a low level on the second level detection pin. The MCU determines whether the front connector 5 and the rear connector 9 are connected to the power module 2 by detecting the levels of the first and second level detection pins.

[0043] like Figure 16 and Figure 17 As shown, the Vin+ terminal of the charging circuit is electrically connected to the third level detection pin of the MCU. When there is a charging input to the charging circuit, the third level detection pin is at a high level. The MCU determines whether there is a charging input to the charging circuit by detecting the level of the third level detection pin.

[0044] When the MCU detects that the first level detection pin is low and the second level detection pin is not low, such as Figure 2 As shown, the MCU determines that the front connector 5 is connected to the power module 2 to form a first single-capacity mobile power supply. Figure 17 As shown, the first level output pin of the MCU is low, and the first and second PMOS are turned on to realize the charging and discharging of the power module 2. When button 4 is pressed, the MCU detects the voltage of the first voltage detection pin and displays the remaining power of the power module 2 for 1 second. When button 4 is pressed again, the remaining power is displayed again.

[0045] When the MCU detects that the second level detection pin is low and the first level detection pin is not low, such as Figure 3 As shown, the MCU determines that the power module 2 is connected to the rear connector 9 to form a second single-capacity mobile power supply. Figure 17As shown, the second level output pin of the MCU is low, and the third and fourth PMOS are turned on to realize the charging and discharging of the power module 2. When button 4 is pressed, the MCU detects the voltage of the second voltage detection pin and displays the remaining power of the power module 2 for 1 second. When button 4 is pressed again, the remaining power is displayed again.

[0046] When the MCU detects that both the first and second level detection pins are low, such as Figure 4 As shown, the MCU determines that both the front connector 5 and the back connector 9 are connected to power module 2, forming a double-capacity mobile power supply. Figure 17 As shown, the MCU detects the level of the third level detection pin and the voltages of the first and second voltage detection pins to determine whether there is a charging input and the remaining power of each of the two power modules 2: If the MCU detects a charging input and neither power module 2 is fully charged, the MCU turns on the first and second PMOS transistors to charge the power module 2 connected to the front connector 5 until the MCU detects that it is fully charged; if the MCU detects a charging input and one power module 2 is fully charged, the MCU turns on the corresponding PMOS transistor to charge the power module 2 that is not fully charged until the MCU detects that both power modules 2 are fully charged; if the MCU detects a charging input and both power modules 2 are fully charged, the MCU turns on the first, second, third, and fourth PMOS transistors to stop charging; if the MCU detects no charging input and no charging input, the MCU turns on the first and second PMOS transistors to stop charging. When charging input is available and both power modules 2 are powered, the MCU turns on the first and second PMOS transistors, discharging the power module 2 connected to the front connector 5 until the MCU detects that it is de-powered. If the MCU detects no charging input and only one power module 2 is powered, the MCU turns on the corresponding PMOS transistors, discharging the powered power module 2 until the MCU detects that both power modules 2 are de-powered. If the MCU detects no charging input and both power modules 2 are de-powered, the MCU turns on the first, second, third, and fourth PMOS transistors to stop discharging. Pressing button 4 first displays the remaining power of the power module 2 connected to the front connector 5 for 1 second, then after a 1-second interval, displays the remaining power of the power module 2 connected to the rear connector 9 for 1 second. Pressing button 4 again displays the remaining power again.

[0047] like Figure 11 As shown, a USB charging port 13 is provided on the left side of the main circuit module 1 for connecting to an external power source; as Figure 12 As shown, a USB output interface 14 is provided on the right side of the main circuit module 1 for powering mobile devices.

[0048] like Figure 9 and Figure 10 As shown, the front connector 5 and the back connector 9 are respectively located on the front and back of the main circuit module 1. The front and back of the main circuit module 1 have the same shape, as shown below. Figure 11As shown, the side profile of the main circuit module 1 is a rounded rectangle, as... Figure 14 As shown, the side profile of the power module 2 includes a semi-rounded rectangle, which makes the side profile of both the single-capacity and double-capacity power banks rounded rectangles, making it easy for users to hold. The single-capacity power bank also has two combination modes, and users can choose the appropriate combination mode according to their own habits, making it easy to hold with one hand or the left hand or right hand.

Claims

1. A modular mobile power supply, comprising a main circuit module and a power module, characterized in that: The main circuit module is provided with a first connection socket and a second connection socket, and the first connection socket and the second connection socket can be connected to the power supply module. The main circuit module is provided with a discharge circuit, the power module is provided with a battery, and a first switch and a second switch are respectively provided between the first connection socket, the second connection socket and the input end of the discharge circuit. The main circuit module is connected to one power module to form a single-capacity mobile power supply, and the main circuit module is connected to two power modules to form a double-capacity mobile power supply, and the power module is detachable; The first switch includes a first PMOS and a second PMOS, the first PMOS and the second PMOS are connected in reverse series, and the first switch controls the conduction and cutoff between the first connection base and the discharge circuit. The second switch includes a third PMOS and a fourth PMOS, the third PMOS and the fourth PMOS are connected in reverse series, and the second switch controls the conduction and cutoff between the second connection base and the discharge circuit; The main circuit module also includes an MCU; The G poles of the first PMOS and the second PMOS are both electrically connected to the first level output pin of the MCU; The G poles of the third PMOS and the fourth PMOS are both electrically connected to the second level output pin of the MCU; The first connection socket and the second connection socket are respectively arranged on the front and back of the main circuit module, the first connection socket is provided with a first front contact piece and a second front contact piece, the second connection socket is provided with a first back contact piece and a second back contact piece, the first voltage detection pin and the second voltage detection pin of the MCU are respectively electrically connected to the first front contact piece and the first back contact piece, and the second front contact piece and the second back contact piece are respectively electrically connected to the first level detection pin and the second level detection pin of the MCU.

2. A modular mobile power source according to claim 1, characterized in that: The main circuit module is provided with a charging circuit, a button, and a power display LED. The MCU, the button, and the power display LED are used to display the remaining power of the power module. The MCU is also used to detect whether the first connection socket and the second connection socket are connected to the power module. The MCU is also used to detect whether the charging circuit has an external power input. The MCU is also used to control the on and off of the first PMOS, the second PMOS, the third PMOS, and the fourth PMOS.

3. A modular mobile power source according to claim 1, characterized in that: The front and back surfaces of the main circuit module are the same, the side surface of the main circuit module is a rounded rectangle, the side surface of the power module includes half a rounded rectangle, and the side surfaces of the single-capacity mobile power supply and the double-capacity mobile power supply are both rounded rectangles.

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