A portable power supply charging wake-up device

Abstract

This invention discloses a charging wake-up device for a portable power supply, comprising an input rectifier circuit, a delay disconnect circuit, an isolation transmission circuit, and a main control power supply circuit. The output terminal of the input rectifier circuit is connected to the input terminal of the delay disconnect circuit, the output terminal of the delay disconnect circuit is connected to the input terminal of the isolation transmission circuit, and the output terminal of the isolation transmission circuit is connected to the input terminal of the main control power supply circuit. The input terminal of the input rectifier circuit is used to connect to the battery charging port of the portable power supply, and the output terminal of the main control power supply circuit is used to connect to the main control power supply input port of the portable power supply. This invention allows the main control unit to be powered by the portable power supply's battery, and after a delay, the power is disconnected at the delay disconnect circuit. No additional power supply is required; it is only in a limited-duration connected state during charging wake-up, achieving low power consumption while reliably powering the portable power supply's main control unit.

Description

Technical Field

[0001] This invention relates to the field of power supply charging wake-up technology, and in particular to a portable power supply charging wake-up device. Background Technology

[0002] In recent years, with the popularization of outdoor sports, the use of outdoor electrical appliances has increased significantly, and the popularity of portable power banks has also grown. Portable power banks use lithium batteries for power. Therefore, when the battery is depleted, it needs to be recharged. Charging a portable power bank requires first powering the main controller, which then wakes up the battery management system (BMS). The main controller then sends commands to the power control system (PCS), which in turn charges the lithium battery. However, the main controller of the portable power bank is itself powered by the battery, causing a vicious cycle that prevents it from waking up properly.

[0003] Therefore, existing technologies mainly employ the following two methods:

[0004] 1. Keep the main controller powered and enter low-power mode when shutting down; Although this method has low power consumption, for portable power supplies, if they are not used for a long time, they are still easy to run out of power, resulting in the inability to turn on, and it also increases the power consumption during normal use.

[0005] Second, add an extra power supply to power the main controller, turning on the power while charging; this method only uses the power supply when charging, which is more expensive; in addition, the power supply is always working while charging, which also has a lifespan requirement; the capacity of the extra power supply also needs to be considered, otherwise it may also lead to the inability to turn on.

[0006] In summary, the existing methods still have the problem of the main controller not receiving power under long-term use, making them unreliable and power-consuming, and therefore unsuitable for portable power supplies. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a charging wake-up device for a portable power supply that can reliably supply power to the main controller of the portable power supply while achieving low power consumption.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0009] A portable power supply charging wake-up device includes an input rectifier circuit, a delay disconnect circuit, an isolation transmission circuit, and a main control power supply circuit.

[0010] The output terminal of the input rectifier circuit is connected to the input terminal of the delay disconnect circuit, the output terminal of the delay disconnect circuit is connected to the input terminal of the isolation transmission circuit, and the output terminal of the isolation transmission circuit is connected to the input terminal of the main control power supply circuit.

[0011] The input terminal of the input rectifier circuit is used to connect to the battery charging port of the portable power supply, and the output terminal of the main control power supply circuit is used to connect to the main control power supply input port of the portable power supply.

[0012] The beneficial effects of this invention are as follows: It provides a charging wake-up device for a portable power supply. During charging, the AC power input from the battery charging port of the portable power supply passes through an input rectifier circuit, a delay disconnect circuit, an isolation transmission circuit, and a main control power supply circuit to supply power to the main control unit, enabling the main control unit to issue charging commands normally. After the main control unit is powered by the battery of the portable power supply, the power supply is disconnected at the delay disconnect circuit after a delay. No additional power supply is required. It is only in a connected state for a limited time during charging wake-up, achieving low power consumption while reliably supplying power to the main control unit of the portable power supply. Attached Figure Description

[0013] Figure 1 This is a system block diagram of a charging wake-up device for a portable power supply according to an embodiment of the present invention;

[0014] Figure 2 This is a circuit diagram of a delayed disconnect circuit for a charging wake-up device of a portable power supply according to an embodiment of the present invention;

[0015] Figure 3 This is a circuit diagram of the main control power supply circuit of a charging wake-up device for a portable power supply according to an embodiment of the present invention;

[0016] Figure 4 This is a circuit diagram of the input rectifier circuit of a charging wake-up device for a portable power supply according to an embodiment of the present invention;

[0017] Figure 5 This is a circuit diagram of the pulse generation circuit of a portable power supply charging wake-up device according to an embodiment of the present invention.

[0018] Label Explanation:

[0019] 1. Input rectifier circuit; 2. Delay disconnect circuit; 3. Isolation transmission circuit; 4. Main control power supply circuit; 5. Battery charging port; 6. Main control power supply input port;

[0020] 31. Isolation circuit; 32. Pulse generation circuit;

[0021] C1, the first non-polarized capacitor; C2, the second non-polarized capacitor; C3, the third non-polarized capacitor;

[0022] CP1, the first polarized capacitor; CP2, the second polarized capacitor; CP3, the third polarized capacitor; CP4, the fourth polarized capacitor;

[0023] D1, first diode; D2, second diode; D3, third diode; D4, fourth diode;

[0024] Q1, first transistor; Q2, second transistor; Q3, third transistor; Q4, fourth transistor; Q5, fifth transistor;

[0025] R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; R7, seventh resistor; R8, eighth resistor; R9, ninth resistor;

[0026] U1, 555 chip;

[0027] Z1, the first Zener diode. Detailed Implementation

[0028] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0029] Please refer to Figures 1 to 5 A portable power supply charging wake-up device includes an input rectifier circuit 1, a delay disconnect circuit 2, an isolation transmission circuit 3, and a main control power supply circuit 4.

[0030] The output terminal of the input rectifier circuit 1 is connected to the input terminal of the delay disconnect circuit 2, the output terminal of the delay disconnect circuit 2 is connected to the input terminal of the isolation transmission circuit 3, and the output terminal of the isolation transmission circuit 3 is connected to the input terminal of the main control power supply circuit 4.

[0031] The input terminal of the input rectifier circuit 1 is used to connect to the battery charging port 5 of the portable power supply, and the output terminal of the main control power supply circuit 4 is used to connect to the main control power supply input port 6 of the portable power supply.

[0032] As can be seen from the above description, the beneficial effects of the present invention are as follows: It provides a charging wake-up device for a portable power supply. During charging, the AC power input from the battery charging port 5 of the portable power supply passes through the input rectifier circuit 1, the delay disconnect circuit 2, the isolation transmission circuit 3, and the main control power supply circuit 4 to supply power to the main control, so that the main control can issue charging commands normally. After the main control can be powered by the battery of the portable power supply, the power supply is disconnected at the delay disconnect circuit 2 after a delay. No additional power supply is required. It is only in a connected state for a limited time during charging wake-up, achieving low power consumption while reliably supplying power to the main control of the portable power supply.

[0033] Furthermore, the isolation transmission circuit 3 includes an isolation circuit 31 and a pulse generation circuit 32;

[0034] The output terminal of the delay disconnect circuit 2 is connected to the input terminal of the isolation circuit 31, and the output terminal of the isolation circuit 31 is connected to the input terminal of the main control power supply circuit 4.

[0035] The output terminal of the pulse generating circuit 32 is connected to the transmission enable terminal of the isolation circuit 31.

[0036] As can be seen from the above description, the isolation circuit 31 relies on the pulse waveform output by the pulse generator circuit 32 to control the energy transfer between the preceding and following stages. Since the circuit does not need to work for a long time, it can meet the requirements by relying on pulses with a certain width and a certain period, making it convenient to use.

[0037] Furthermore, the time-delay disconnect circuit 2 includes a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1, a first Zener diode Z1, a first polarized capacitor CP1, a second polarized capacitor CP2, and a third polarized capacitor CP3.

[0038] The base of the first transistor Q1 is connected to one end of the first resistor R1 and the collector of the second transistor Q2. The other end of the first resistor R1 is connected to the positive terminal of the first polarized capacitor CP1, the positive terminal of the second polarized capacitor CP2, and the positive terminal of the first diode D1. The negative terminal of the second polarized capacitor CP2 is connected to the collector of the first transistor Q1.

[0039] The cathode of the first diode D1 is connected to one end of the third resistor R3. The base of the second transistor Q2 is connected to one end of the third resistor R3. The other end of the third resistor R3 is connected to the emitter of the third transistor Q3 and the emitter of the fourth transistor Q4. The base and collector of the third transistor Q3 are connected to the anode of the first Zener diode Z1 and the base of the fourth transistor Q4, respectively. The cathode of the first Zener diode Z1 is connected to the other end of the third resistor R3, the collector of the fourth transistor Q4, and the anode of the third polarized capacitor CP3.

[0040] The negative terminal of the first polarized capacitor CP1, the emitter of the first transistor Q1, the emitter of the second transistor Q2, and the negative terminal of the third polarized capacitor CP3 are all grounded. The positive and negative terminals of the second polarized capacitor CP2 are connected to the output terminal of the input rectifier circuit 1, and the positive terminal of the first diode D1 is connected to the input terminal of the isolation transmission circuit 3.

[0041] As described above, the time-delay disconnect circuit 2 uses the first transistor Q1 as the main switching component. When the input voltage charges the third polarized capacitor CP3 through the second resistor R2 to a certain value, the first Zener diode Z1 turns on, which in turn turns on the third transistor Q3, the fourth transistor Q4, and the second transistor Q2, thereby turning off the first transistor Q1 and achieving the purpose of cutting off the input. Its delay time can be set by adjusting the values ​​of the first Zener diode Z1, the second resistor R2, and the third capacitor, making the control convenient and accurate.

[0042] Furthermore, the main control power supply circuit 4 includes a first non-polarized capacitor C1, a fifth transistor Q5, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a second diode D2;

[0043] The collector of the fifth transistor Q5 is connected to one end of the first non-polarized capacitor C1 and the output terminal of the isolation transmission circuit 3. The emitter of the fifth transistor Q5 is connected to the main control power input port 6 of the portable power supply through the fourth resistor R4.

[0044] The base of the fifth transistor Q5 is connected to one end of the fifth resistor R5 and the cathode of the second diode D2. The anode of the second diode D2 is connected to the main control voltage output port of the portable power supply through the sixth resistor R6.

[0045] The other end of the fifth resistor R5 and the other end of the first non-polar capacitor C1 are both grounded.

[0046] As can be seen from the above description, the main control power supply circuit 4 turns on the fifth transistor Q5 after the voltage input, thereby supplying power to the main control. When the entire system is powered normally, the voltage generated inside the main control turns off the fifth transistor Q5, so that the main control can be powered normally by the system power supply.

[0047] Furthermore, the input rectifier circuit 1 includes a third diode D3, a fourth diode D4, a fourth polarized capacitor CP4, and a seventh resistor R7;

[0048] The negative terminal of the third diode D3 is connected to the positive terminal of the fourth polarized capacitor CP4 through the seventh resistor R7. Both the negative terminal of the fourth polarized capacitor CP4 and the positive terminal of the fourth diode D4 are grounded.

[0049] The positive terminal of the fourth polarized capacitor CP4 is connected to the input terminal of the time-delay disconnect circuit 2, and the positive terminal of the third diode D3 and the negative terminal of the fourth diode D4 are used together to connect to the battery charging port 5 of the portable power supply.

[0050] Furthermore, the pulse generating circuit 32 includes a 555 chip U1, an eighth resistor R8, a ninth resistor R9, a second non-polarized capacitor C2, and a third non-polarized capacitor C3.

[0051] One end of the eighth resistor R8 is connected to both the power supply pin and the reset pin of the 555 chip U1 and is used to connect to an external power source. The other end of the eighth resistor R8 is connected to one end of the ninth resistor R9 and the discharge pin of the 555 chip U1. The other end of the ninth resistor R9 is connected to one end of the second non-polarized capacitor C2 and the threshold pin and the trigger pin of the 555 chip U1. The control pin of the 555 chip U1 is connected to one end of the third non-polarized capacitor C3.

[0052] The other end of the second non-polarized capacitor C2, the other end of the third non-polarized capacitor C3, and the ground pin of the 555 chip U1 are all grounded.

[0053] The present invention provides a charging wake-up device for a portable power bank that is applicable to scenarios involving the charging of portable power banks. The following detailed embodiments illustrate this device:

[0054] Please refer to Figures 1 to 5 Embodiment 1 of the present invention is as follows:

[0055] A portable power supply charging wake-up device, such as Figure 1 As shown, it includes an input rectifier circuit 1, a delay disconnect circuit 2, an isolation transmission circuit 3, and a main control power supply circuit 4. The output of the delay disconnect circuit 2 is connected to the input of the isolation circuit 31, and the output of the isolation circuit 31 is connected to the input of the main control power supply circuit 4. The output of the pulse generator circuit 32 is connected to the transmission enable terminal of the isolation circuit 31. The input of the input rectifier circuit 1 is used to connect to the battery charging port 5 of the portable power supply, and the output of the main control power supply circuit 4 is used to connect to the main control power supply input port 6 of the portable power supply.

[0056] In this embodiment, the specific functions of each circuit are as follows:

[0057] Input rectifier circuit 1: Shapes AC power into DC power;

[0058] Delayed disconnect circuit 2: The charging delay circuit provides a short-term energy output. After a certain period of time, the circuit will automatically disconnect, cutting off the energy supply.

[0059] Isolation transmission circuit 3: Provides voltage isolation between high and low voltage, and provides safety protection;

[0060] Pulse generating circuit 32: works with isolation circuit 31 to chop the input DC power, thereby transferring energy to the output;

[0061] Main control power supply circuit 4: Provides signals to the main controller and disconnects after the main controller is powered normally.

[0062] In this embodiment, the usage process of a portable power supply charging wake-up device is as follows:

[0063] When the portable power bank needs to be charged, the user connects the charging power supply through the battery charging port 5; the power energy passes through the input rectifier circuit 1, the delay disconnect circuit 2, the isolation transmission circuit 3 and the main control power supply circuit 4 in sequence to power the main control of the portable power bank, so that the main control is awakened and then issues a charging command.

[0064] After the portable power bank begins normal charging, the main control unit is powered by the portable power bank's battery, and the delayed disconnect circuit 2 is disconnected, which automatically stops the use of the charging wake-up device.

[0065] In this embodiment, as Figure 2 As shown, the time-delay disconnect circuit 2 includes a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1, a first Zener diode Z1, a first polarized capacitor CP1, a second polarized capacitor CP2, and a third polarized capacitor CP3. The base of the first transistor Q1 is connected to one end of the first resistor R1 and the collector of the second transistor Q2. The other end of the first resistor R1 is connected to the positive terminals of the first polarized capacitor CP1, the second polarized capacitor CP2, and the first diode D1. The negative terminal of the second polarized capacitor CP2 is connected to the collector of the first transistor Q1. The negative terminal of the first diode D1 is connected to one end of the third resistor R3. The second transistor... The base of transistor Q2 is connected to one end of the third resistor R3. The other end of the third resistor R3 is connected to the emitter of both the third transistor Q3 and the fourth transistor Q4. The base and collector of the third transistor Q3 are connected to the positive terminal of the first Zener diode Z1 and the base of the fourth transistor Q4, respectively. The negative terminal of the first Zener diode Z1 is connected to the other end of the third resistor R3, the collector of the fourth transistor Q4, and the positive terminal of the third polarized capacitor CP3. The negative terminal of the first polarized capacitor CP1, the emitter of the first transistor Q1, the emitter of the second transistor Q2, and the negative terminal of the third polarized capacitor CP3 are all grounded. The positive and negative terminals of the second polarized capacitor CP2 are connected to the output terminal of the input rectifier circuit 1. The positive terminal of the first diode D1 is connected to the input terminal of the isolation transmission circuit 3.

[0066] In this embodiment, the delay time of the delay disconnect circuit 2 can be set by adjusting the values ​​of the first Zener diode Z1, the second resistor R2, and the third capacitor.

[0067] In this embodiment, as Figure 3 As shown, the main control power supply circuit 4 includes a first non-polarized capacitor C1, a fifth transistor Q5, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a second diode D2. The collector of the fifth transistor Q5 is connected to one end of the first non-polarized capacitor C1 and the output terminal of the isolation transmission circuit 3. The emitter of the fifth transistor Q5 is connected to the main control power supply input port 6 of the portable power supply through the fourth resistor R4. The base of the fifth transistor Q5 is connected to one end of the fifth resistor R5 and the cathode of the second diode D2. The anode of the second diode D2 is connected to the main control voltage output port of the portable power supply through the sixth resistor R6. The other end of the fifth resistor R5 and the other end of the first non-polarized capacitor C1 are both grounded.

[0068] In this embodiment, after the main controller can be fully powered by the battery of the portable power supply, the delay disconnect circuit 2 is in the disconnected state, and the main controller power supply circuit 4 also turns off the fifth transistor Q5 because of the voltage output from the main controller voltage output port. Thus, the entire charging wake-up device is in a completely disconnected state, truly achieving low power consumption.

[0069] In this embodiment, as Figure 4 As shown, the input rectifier circuit 1 includes a third diode D3, a fourth diode D4, a fourth polarized capacitor CP4, and a seventh resistor R7; the cathode of the third diode D3 is connected to the anode of the fourth polarized capacitor CP4 through the seventh resistor R7, and both the cathode of the fourth polarized capacitor CP4 and the anode of the fourth diode D4 are grounded; the anode of the fourth polarized capacitor CP4 is connected to the input terminal of the time-delay disconnect circuit 2, and the anodes of the third diode D3 and the cathode of the fourth diode D4 are used to connect to the battery charging port 5 of the portable power supply.

[0070] In this embodiment, as Figure 5 As shown, the pulse generation circuit 32 includes a 555 chip U1, an eighth resistor R8, a ninth resistor R9, a second non-polarized capacitor C2, and a third non-polarized capacitor C3. One end of the eighth resistor R8 is connected to both the power supply pin and the reset pin of the 555 chip U1 and is used to connect to an external power supply. The other end of the eighth resistor R8 is connected to one end of the ninth resistor R9 and the discharge pin of the 555 chip U1. The other end of the ninth resistor R9 is connected to one end of the second non-polarized capacitor C2 and the threshold pin and the trigger pin of the 555 chip U1. The control pin of the 555 chip U1 is connected to one end of the third non-polarized capacitor C3. The other ends of the second non-polarized capacitor C2, the other ends of the third non-polarized capacitor C3, and the ground pin of the 555 chip U1 are all grounded.

[0071] In summary, the present invention provides a charging wake-up device for a portable power supply. During charging, the AC power input from the battery charging port of the portable power supply sequentially passes through an input rectifier circuit, a delay disconnect circuit, an isolation transmission circuit, and a main control power supply circuit to power the main control unit, enabling the main control unit to issue charging commands normally. After the main control unit is powered by the battery of the portable power supply, the power supply is disconnected at the delay disconnect circuit after a delay. No additional power supply is required, and the main control unit is in a connected state for a limited time only during charging wake-up, achieving low power consumption while reliably powering the main control unit of the portable power supply.

[0072] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A charging and wake-up device for a portable power supply, characterized in that, This includes an input rectifier circuit, a delay disconnect circuit, an isolation transmission circuit, and a main control power supply circuit; The output terminal of the input rectifier circuit is connected to the input terminal of the delay disconnect circuit, the output terminal of the delay disconnect circuit is connected to the input terminal of the isolation transmission circuit, and the output terminal of the isolation transmission circuit is connected to the input terminal of the main control power supply circuit. The input terminal of the input rectifier circuit is used to connect to the battery charging port of the portable power supply, and the output terminal of the main control power supply circuit is used to connect to the main control power supply input port of the portable power supply. The isolated transmission circuit includes an isolation circuit and a pulse generation circuit; The output terminal of the delay disconnect circuit is connected to the input terminal of the isolation circuit, and the output terminal of the isolation circuit is connected to the input terminal of the main control power supply circuit. The output terminal of the pulse generating circuit is connected to the transmission enable terminal of the isolation circuit; The time-delay disconnect circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a first resistor, a second resistor, a third resistor, a first diode, a first Zener diode, a first polarized capacitor, a second polarized capacitor, and a third polarized capacitor. The base of the first transistor is connected to one end of the first resistor and the collector of the second transistor. The other end of the first resistor is connected to the positive terminal of the first polarized capacitor, the positive terminal of the second polarized capacitor, and the positive terminal of the first diode. The negative terminal of the second polarized capacitor is connected to the collector of the first transistor. The negative terminal of the first diode is connected to one end of the third resistor, the base of the second transistor is connected to one end of the third resistor, the other end of the third resistor is connected to the emitter of the third transistor and the emitter of the fourth transistor, the base and collector of the third transistor are connected to the positive terminal of the first Zener diode and the base of the fourth transistor, respectively, and the negative terminal of the first Zener diode is connected to the other end of the third resistor, the collector of the fourth transistor, and the positive terminal of the third polarized capacitor. The negative terminal of the first polarized capacitor, the emitter of the first transistor, the emitter of the second transistor, and the negative terminal of the third polarized capacitor are all grounded. The positive and negative terminals of the second polarized capacitor are connected to the output terminal of the input rectifier circuit, and the positive terminal of the first diode is connected to the input terminal of the isolation transmission circuit.

2. The charging and wake-up device for a portable power supply according to claim 1, characterized in that, The main control power supply circuit includes a first non-polarized capacitor, a fifth transistor, a fourth resistor, a fifth resistor, a sixth resistor, and a second diode; The collector of the fifth transistor is connected to one end of the first non-polarized capacitor and the output terminal of the isolation transmission circuit, and the emitter of the fifth transistor is connected to the main control power input port of the portable power supply through the fourth resistor. The base of the fifth transistor is connected to one end of the fifth resistor and the negative terminal of the second diode, and the positive terminal of the second diode is connected to the main control voltage output port of the portable power supply through the sixth resistor. The other end of the fifth resistor and the other end of the first non-polar capacitor are both grounded.

3. The charging and wake-up device for a portable power supply according to claim 1, characterized in that, The input rectifier circuit includes a third diode, a fourth diode, a fourth polarized capacitor, and a seventh resistor; The negative terminal of the third diode is connected to the positive terminal of the fourth polarized capacitor through the seventh resistor, and both the negative terminal of the fourth polarized capacitor and the positive terminal of the fourth diode are grounded. The positive terminal of the fourth polarized capacitor is connected to the input terminal of the time-delay disconnect circuit, and the positive terminal of the third diode and the negative terminal of the fourth diode are used together to connect to the battery charging port of the portable power supply.

4. The charging and wake-up device for a portable power supply according to claim 1, characterized in that, The pulse generating circuit includes a 555 chip, an eighth resistor, a ninth resistor, a second non-polarized capacitor, and a third non-polarized capacitor. One end of the eighth resistor is connected to both the power supply pin and the reset pin of the 555 chip and is used to connect to an external power source. The other end of the eighth resistor is connected to both one end of the ninth resistor and the discharge pin of the 555 chip. The other end of the ninth resistor is connected to both one end of the second non-polarized capacitor and the threshold pin and the trigger pin of the 555 chip. The control pin of the 555 chip is connected to one end of the third non-polarized capacitor. The other end of the second non-polarized capacitor, the other end of the third non-polarized capacitor, and the ground pin of the 555 chip are all grounded.

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