Portable energy storage equipment and starting control circuit thereof

Abstract

The invention discloses portable energy storage equipment and a starting control circuit thereof. The portable energy storage equipment comprises an energy storage battery, and the start control circuit of the portable energy storage equipment comprises a key switch module which is used for receiving an external instruction and outputting a key signal when the received external instruction is a start instruction; the pre-charging starting module is used for controlling the energy storage battery to pre-charge the electric load with limited current under the control of the key signal; the voltage detection module is used for detecting the battery voltage of the energy storage battery and the load voltage of the electricity load in real time; the main control module is used for outputting a self-sustaining signal when the load voltage and the battery voltage reach a preset proportion; and the self-sustaining module is used for controlling the energy storage battery to supply power to the electric load under the control of the self-sustaining signal. According to the technical scheme, the operation safety and stability of the portable energy storage equipment can be improved.

Description

Technical Field

[0001] This invention relates to the field of power electronics technology, and in particular to a portable energy storage device and its start-up control circuit. Background Technology

[0002] With the rapid development of energy storage technology, portable energy storage devices have become essential equipment for outdoor power supplies, home backup power, and emergency rescue. The core of a portable energy storage device is a DC power system composed of energy storage batteries. These batteries can directly supply power to DC loads or, after signal conversion via a power conversion module, supply power to AC loads. However, during the power-on or startup process of a portable energy storage device, there is a high inrush current. The impact of this inrush current can lead to startup failure, damage to power devices within the energy storage device, and affect the lifespan of the energy storage batteries.

[0003] Currently, to reduce surge risk, existing technologies typically employ the following methods: First, a current-limiting resistor is connected in series between the power supply and the load to clamp the surge. However, this approach is inefficient, has high energy loss, and causes significant resistor heating, making it unsuitable for long-term applications. Second, a relay and a pre-charge circuit are installed between the power supply and the load. The relay switches the circuit to allow pre-charging before shorting the pre-charge circuit for full-voltage power supply. However, this approach requires mechanical components, resulting in large size and short lifespan, which is detrimental to the miniaturization of portable products. Third, a MOSFET is used to control the turn-on speed to limit the surge. However, its control circuit is complex and lacks self-holding functionality, making it inconvenient for users. Summary of the Invention

[0004] This invention provides a portable energy storage device and its start-up control circuit, which can prevent the energy storage battery from generating a high surge current when it powers the load, thereby improving the service life of the energy storage battery and enhancing the operational safety and stability of the portable energy storage device.

[0005] In a first aspect, the present invention provides a start-up control circuit for a portable energy storage device, the portable energy storage device including an energy storage battery, and the start-up control circuit for the portable energy storage device including:

[0006] The button switch module is used to receive external commands and output a button signal when the received external command is a start command;

[0007] The pre-charge start-up module is electrically connected to the button switch module, the energy storage battery, and the electrical load, respectively; the pre-charge start-up module is used to control the energy storage battery to pre-charge the electrical load with a limited current under the control of the button signal;

[0008] A voltage detection module is electrically connected to both the energy storage battery and the electrical load; the voltage detection module is used to detect the battery voltage of the energy storage battery and the load voltage of the electrical load in real time.

[0009] The main control module is electrically connected to the voltage detection module; the main control module is used to output a self-sustaining signal when the load voltage and the battery voltage reach a preset ratio.

[0010] The self-sustaining module is electrically connected to the main control module, the energy storage battery, and the electrical load, respectively. The self-sustaining module is used to control the energy storage battery to supply power to the electrical load under the control of the self-sustaining signal.

[0011] Optionally, the precharge start-up module includes a precharge control unit, a precharge switch unit, and a precharge current limiting unit;

[0012] The control terminal of the precharge control unit is electrically connected to the button switch module, and the output terminal of the precharge control unit is electrically connected to the control terminal of the precharge switch unit; the precharge control unit is used to output a precharge control signal according to the button signal;

[0013] The input terminal of the precharge switch unit is electrically connected to the energy storage battery, and the output terminal of the precharge switch unit is electrically connected to the input terminal of the precharge current limiting unit; the precharge switch unit is used to control the energy storage battery to provide a power signal to the precharge current limiting unit according to the precharge control signal.

[0014] The output terminal of the precharge current limiting unit is electrically connected to the electrical load; the precharge current limiting unit is used to control the power signal of the energy storage battery to precharge the electrical load with the limited current.

[0015] Optionally, the precharge control unit includes a first voltage divider resistor, a first transistor, and a first bias resistor;

[0016] The first end of the first voltage divider resistor is electrically connected to the push-button switch module, and the second end of the first voltage divider resistor is electrically connected to the gate of the first transistor.

[0017] The first terminal of the first transistor is electrically connected to the negative terminal of the energy storage battery, and the second terminal of the first transistor is electrically connected to the control terminal of the precharge switch unit.

[0018] The first bias resistor is electrically connected between the gate of the first transistor and the first terminal of the first transistor.

[0019] Optionally, the precharge control unit further includes a first capacitor;

[0020] The first capacitor is electrically connected between the negative terminal of the energy storage battery and the gate of the first transistor.

[0021] Optionally, the precharge switching unit includes a second voltage divider resistor, a second bias resistor, and a second transistor;

[0022] The first end of the second voltage divider resistor is electrically connected to the output terminal of the precharge control unit, and the second end of the second voltage divider resistor is electrically connected to the gate of the second transistor.

[0023] The first terminal of the second transistor is electrically connected to the positive terminal of the energy storage battery, and the second terminal of the second transistor is electrically connected to the input terminal of the precharge current limiting unit.

[0024] The second bias resistor is electrically connected between the gate of the second transistor and the first terminal of the second transistor.

[0025] Optionally, the pre-charge current limiting unit includes a current limiting resistor;

[0026] The first end of the current-limiting resistor is electrically connected to the output end of the pre-charge switch unit, the second end of the current-limiting resistor is electrically connected to the positive power signal terminal of the electrical load, and the negative power signal terminal of the electrical load is electrically connected to the negative terminal of the energy storage battery.

[0027] Optionally, the self-maintaining module includes a maintenance control unit and a maintenance switch unit;

[0028] The control terminal of the maintenance control unit is electrically connected to the main control module, and the output terminal of the maintenance control unit is electrically connected to the control terminal of the maintenance switch unit; the maintenance control unit is used to provide a maintenance control signal to the maintenance switch unit according to the self-maintaining signal;

[0029] The input terminal of the sustaining switch unit is electrically connected to the energy storage battery, and the output terminal of the sustaining switch unit is electrically connected to the electrical load. The sustaining switch unit is used to control the power signal of the energy storage battery to supply power to the electrical load according to the sustaining control signal.

[0030] Optionally, the sustaining control unit includes a third voltage divider resistor, a third transistor, and a third bias resistor;

[0031] The first end of the third voltage divider resistor is electrically connected to the main control module, and the second end of the third voltage divider resistor is electrically connected to the gate of the third transistor.

[0032] The first terminal of the third transistor is electrically connected to the negative terminal of the energy storage battery, and the second terminal of the third transistor is electrically connected to the control terminal of the sustaining switch unit.

[0033] The third bias resistor is electrically connected between the gate of the third transistor and the first electrode of the third transistor.

[0034] Optionally, the maintenance control unit further includes a second capacitor;

[0035] The second capacitor is electrically connected between the negative terminal of the energy storage battery and the gate of the third transistor.

[0036] Optionally, the sustaining switch unit includes a fourth voltage divider resistor, a fourth bias resistor, and a fourth transistor;

[0037] The first end of the fourth voltage divider resistor is electrically connected to the output terminal of the sustaining control unit, and the second end of the fourth voltage divider resistor is electrically connected to the gate of the fourth transistor.

[0038] The first terminal of the fourth transistor is electrically connected to the positive terminal of the energy storage battery, the second terminal of the fourth transistor is electrically connected to the positive power signal terminal of the electrical load, and the negative power signal terminal of the electrical load is electrically connected to the negative terminal of the energy storage battery.

[0039] The fourth bias resistor is electrically connected between the gate of the fourth transistor and the first electrode of the fourth transistor.

[0040] Optionally, the button switch module includes a button interaction unit and a button switch unit;

[0041] The button interaction unit is electrically connected to the control terminal of the button switch unit; the button interaction unit is used to receive external commands and provide button control signals to the button switch unit according to the external commands.

[0042] The input terminal of the push-button switch unit is electrically connected to the energy storage battery, and the output terminal of the push-button switch unit is electrically connected to the pre-charge start-up module; the push-button switch unit is used to control the push-button signal provided to the pre-charge start-up module according to the push-button control signal and the power signal of the energy storage battery.

[0043] Optionally, the button interaction unit includes a mechanical switch;

[0044] The first end of the mechanical switch is electrically connected to the negative terminal of the energy storage battery, and the second end of the mechanical switch is electrically connected to the control terminal of the push-button switch unit.

[0045] Optionally, the push-button switch unit includes a fifth transistor, a fifth voltage divider resistor, and a sixth voltage divider resistor;

[0046] The gate of the fifth transistor is electrically connected to the button interaction unit, the first terminal of the fifth transistor is electrically connected to the positive terminal of the energy storage battery through the fifth voltage divider resistor, the first terminal of the fifth transistor is also electrically connected to the negative terminal of the energy storage battery through the sixth voltage divider resistor, and the second terminal of the fifth transistor is electrically connected to the pre-charge start-up module.

[0047] In a second aspect, the present invention provides a portable energy storage device, comprising: an energy storage battery and a start-up control circuit for the portable energy storage device described in the first aspect;

[0048] The start-up control circuit of the portable energy storage device is electrically connected to the energy storage battery and the electrical load, respectively.

[0049] The technical solution of this invention provides a button signal to the pre-charge start-up module when the external command received by the button switch module is a start command. This allows the pre-charge start-up module to control the energy storage battery to pre-charge the electrical load with a limited current under the control of the button signal. This limits the current supplied by the energy storage battery to the electrical load to a limited current, preventing high surge currents from being generated when the energy storage battery supplies power to the load during startup, thus extending the lifespan of the energy storage battery. Simultaneously, a voltage detection module monitors the battery voltage of the energy storage battery and the load voltage of the electrical load in real time. When the battery voltage and load voltage are close, the main control module provides a self-sustaining signal to the self-sustaining module. This allows the self-sustaining module to control the energy storage battery to supply power to the electrical load based on the self-sustaining signal, ensuring that the power demand of the electrical load is still met even after the start command disappears. This simplifies operation and improves the operational safety and stability of the start-up control circuit of the portable energy storage device. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the start-up control circuit of a portable energy storage device provided in an embodiment of the present invention;

[0051] Figure 2 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention;

[0052] Figure 3 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention;

[0053] Figure 4 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention;

[0054] Figure 5 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention;

[0055] Figure 6 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention;

[0056] Figure 7 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention. Detailed Implementation

[0057] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0058] The terminology used in the embodiments of this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. It should be noted that directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this invention. Furthermore, in the context, it should be understood that when referring to an element being formed "on" or "below" another element, it can be formed not only directly on or below the other element, but also indirectly on or below it through intermediate elements. The terms "first," "second," etc., are used for descriptive purposes only and do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0059] The term "comprising" and its variations as used in this invention are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment".

[0060] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish the corresponding contents and are not used to limit the order or interdependence.

[0061] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0062] Figure 1 This is a schematic diagram of the start-up control circuit of a portable energy storage device provided in an embodiment of the present invention, as shown below. Figure 1As shown, the portable energy storage device includes an energy storage battery 60. The start-up control circuit of the portable energy storage device includes: a button switch module 10, used to receive external commands and output a button signal when a start command is received; a pre-charge start-up module 20, electrically connected to the button switch module 10, the energy storage battery 60, and the electrical load 70; the pre-charge start-up module 20 is used to control the energy storage battery 60 to pre-charge the electrical load 70 with a limited current under the control of the button signal; and a voltage detection module 30, connected to the energy storage battery 60 and the electrical load 70 respectively. Load 70 is electrically connected; voltage detection module 30 is used to detect the battery voltage of energy storage battery 60 and the load voltage of electrical load 70 in real time; main control module 40 is electrically connected to voltage detection module 30; main control module 40 is used to output a self-sustaining signal when the load voltage and battery voltage reach a preset ratio; self-sustaining module 50 is electrically connected to main control module 40, energy storage battery 60 and electrical load 70 respectively; self-sustaining module 50 is used to control energy storage battery 60 to supply power to electrical load 70 under the control of self-sustaining signal.

[0063] The push-button switch module 10 may include a mechanical switch or a touch switch. The external command can be a user's instruction to press the switch in the push-button switch module 10. When the energy storage battery 60 is activated to supply power to the electrical load 70, the external command can be an instruction to continuously press the switch in the push-button switch module 10 for a preset time. In an exemplary embodiment, when the user continuously presses the switch in the push-button switch module 10, the push-button switch module 10 can output a button signal; when the user stops pressing the switch in the push-button switch module 10, the push-button switch module 10 can stop outputting the button signal. The button signal can be a high level or a low level, and can be designed according to actual needs; this embodiment of the invention does not limit this.

[0064] The precharge start module 20 is electrically connected to the button switch module 10, so that the precharge start module 20 can receive the button signal output by the button switch module 10, and under the control of the button signal, control the energy storage battery 60 to precharge the electrical load 70 with a limited current. For example, when a user presses the switch in the button switch module 10, the button switch module 10 outputs a button signal to the precharge start-up module 20, causing the precharge start-up module 20 to control the energy storage battery 60 to form a conductive circuit with the electrical load 70. The energy storage battery 60 precharges the electrical load 70 with a limited current through the precharge start-up module 20, so that the current of the signal provided by the energy storage battery 60 to the electrical load 70 is limited to a limited current. This limited current can be a small current to prevent the energy storage battery 60 from generating a high surge current when powering the electrical load 70, which could damage the electrical load 70 and the energy storage battery 60, thereby improving the service life of the energy storage battery 60. When the user no longer presses the switch in the button switch module 10, the button switch module 10 cannot provide a button signal to the precharge start-up module 20, the precharge start-up module 20 cannot control the energy storage battery 60 to form a conductive circuit with the electrical load 70, and the energy storage battery 60 cannot precharge the electrical load 70 through the precharge start-up module 20.

[0065] Understandably, when the energy storage battery 60 charges the electrical load 70, the energy storage battery 60 continuously discharges while the electrical load 70 continuously charges, causing the energy storage battery 60's charge to gradually decrease and the electrical load 70's charge to continuously increase. Since the remaining charge of the energy storage battery 60 is positively correlated with its battery voltage—that is, the lower the battery voltage, the lower the remaining charge—the battery voltage of the energy storage battery 60 continuously decreases as its charge decreases. Similarly, the charge of the electrical load 70 is positively correlated with its load voltage—that is, the higher the load voltage, the higher its charge. Therefore, the load voltage of the electrical load 70 continuously increases as its charge increases.

[0066] Continue to refer to Figure 1By setting a voltage detection module 30 to detect the battery voltage of the energy storage battery 60 and the load voltage of the electrical load 70 respectively, the remaining power of the energy storage battery 60 and the power of the electrical load 70 can be determined. The voltage detection module 30 may include a battery voltage detection unit (not shown in the figure) and a load voltage detection unit (not shown in the figure). The battery voltage detection unit can detect the battery voltage of the energy storage battery 60 in real time, thereby determining the remaining power of the energy storage battery 60; the load voltage detection unit can detect the load voltage of the electrical load 70 in real time, thereby determining the power of the electrical load 70. Both the battery voltage detection unit and the load voltage detection unit may include a voltage detection sensor to directly detect the battery voltage of the energy storage battery 60 and the load voltage of the electrical load 70. The voltage detection unit and the load voltage detection unit may also include devices such as resistors. The resistor in the voltage detection unit may be connected in parallel with the energy storage battery 60, and the load voltage detection unit may be connected in parallel with the electrical load 70. By detecting the voltage across the resistors connected in parallel with the energy storage battery 60 and the electrical load 70 respectively, the battery voltage of the energy storage battery 60 and the load voltage of the electrical load 70 can be determined.

[0067] The main control module 40 is electrically connected to the voltage detection module 30, enabling the main control module 40 to receive the battery voltage and load voltage detected by the voltage detection module 30. Based on the received battery voltage and load voltage, the main control module 40 can determine whether the load voltage is close to the battery voltage. When the main control module 40 determines that the load voltage detected by the voltage detection module 30 reaches a preset ratio with the battery voltage, it can determine that the load voltage is close to the battery voltage, and directly connect the energy storage battery 60 to the electrical load 70 without generating a high inrush current. At this time, the main control module 40 can output a corresponding self-sustaining signal based on the load voltage and battery voltage. For example, the preset ratio can be a preset percentage, such as greater than or equal to 80%.

[0068] It is understood that the pre-charge start-up module 20 controls the energy storage battery 60 to continuously pre-charge the electrical load 70 with a limited current. During the process of the load voltage of the electrical load 70 gradually rising to a preset proportion of the battery voltage, the user needs to continuously press the switch in the button switch module 10. However, the duration required for this process is usually a short time, for example, greater than or equal to 2 seconds and less than or equal to 5 seconds. Therefore, during the process of starting the energy storage battery 60 to supply power to the electrical load 70, the user should continuously press the switch in the button switch module 10 for at least the preset duration. Provided that the load voltage reaches the preset proportion of the battery voltage, this embodiment of the invention does not specifically limit the preset duration.

[0069] In an optional embodiment, the start-up control circuit of the portable energy storage device may further include an alert module, which can be connected to the main control module 40. When the main control module 40 determines that the load voltage has reached a preset proportion of the battery voltage, it controls the alert module to issue a corresponding warning, reminding the user to stop pressing the switch in the push-button switch module 10. The alert module may include, but is not limited to, an alert indicator light and / or an audio alert unit.

[0070] Continue to refer to Figure 1 The self-sustaining module 50 is connected to the main control module 40, enabling the main control module 40 to output a self-sustaining signal to the self-sustaining module 50 when the load voltage and battery voltage reach a preset ratio. Under the control of this signal, the self-sustaining module 50 controls the energy storage battery 60 to provide normal power to the electrical load 70, completing the soft start of the portable energy storage device. The supply current from the energy storage battery 60 to the electrical load 70 controlled by the self-sustaining module 50 can exceed a limited current, thus reducing the power consumption of the portable energy storage device's start-up control circuit while ensuring the normal operation of the electrical load 70. Therefore, even after the user stops pressing the switch in the push-button switch module 10, the self-sustaining module 50, under the control of the self-sustaining signal, can still control the energy storage battery 60 to provide power to the electrical load 70, meeting its power requirements.

[0071] Furthermore, while the energy storage battery 60 is continuously supplying power to the electrical load 70, the voltage detection module 30 can still acquire the voltage of the energy storage battery 60 in real time. When the voltage detection module 30 detects that the battery voltage of the energy storage battery 60 has reached the discharge termination voltage of the energy storage battery 60, it can be determined that the energy storage battery 60 has a low charge. At this time, the main control module 40 can control the self-maintenance module 50 to disconnect the connection between the energy storage battery 60 and the electrical load 70, so that the energy storage battery 60 no longer supplies power to the electrical load 70, thus avoiding the continuous discharge of the energy storage battery 60 and resulting in a power depletion.

[0072] This embodiment provides a button signal to the pre-charge start-up module when the external command received by the button switch module is a start command. This allows the pre-charge start-up module to control the energy storage battery to pre-charge the electrical load with a limited current under the control of the button signal. This limits the current supplied by the energy storage battery to the electrical load, preventing high surge currents during start-up and extending the battery's lifespan. Simultaneously, a voltage detection module monitors the battery voltage and the load voltage in real time. When the battery voltage and load voltage are close, the main control module provides a self-sustaining signal to the self-sustaining module. This allows the self-sustaining module to control the energy storage battery to supply power to the electrical load based on the self-sustaining signal, ensuring that the load's power demand is still met even after the start command disappears. This simplifies operation and improves the operational safety and stability of the portable energy storage device's start-up control circuit.

[0073] Optional, Figure 2 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention, for reference. Figure 2 The precharge start-up module 20 includes a precharge control unit 21, a precharge switch unit 22, and a precharge current limiting unit 23. The control terminal of the precharge control unit 21 is electrically connected to the button switch module 10, and the output terminal of the precharge control unit 21 is electrically connected to the control terminal of the precharge switch unit 22. The precharge control unit 21 is used to output a precharge control signal according to the button signal. The input terminal of the precharge switch unit 22 is electrically connected to the energy storage battery, and the output terminal of the precharge switch unit 22 is electrically connected to the input terminal of the precharge current limiting unit 23. The precharge switch unit 22 is used to control the energy storage battery 60 to provide a power signal to the precharge current limiting unit 23 according to the precharge control signal. The output terminal of the precharge current limiting unit 23 is electrically connected to the electrical load 70. The precharge current limiting unit 23 is used to control the power signal of the energy storage battery 60 to limit the current for precharging the electrical load 70.

[0074] The precharge control unit 21, under the control of the button signal output by the button switch module 10, provides a corresponding precharge control signal to the precharge switch unit 22 to control the conduction of the precharge switch unit 22. This, in turn, controls the energy storage battery 60 to precharge the electrical load 70 through the precharge switch unit 22 and the precharge current limiting unit 23 with a limited current, preventing a high surge current from being generated when the energy storage battery 60 powers the electrical load 70, thus improving the service life of the energy storage battery 60. Conversely, when the button switch module 10 does not output a button signal, the precharge control unit 21 cannot control the precharge switch unit 22 to conduct, causing the precharge switch unit to close. Consequently, the energy storage battery 60 cannot charge the electrical load 70 through the precharge switch unit 22 and the precharge current limiting unit 23.

[0075] This embodiment sets the precharge start-up module 20 to include a precharge control unit 21, a precharge switch unit 22, and a precharge current limiting unit 23. Under the control of the button signal, the precharge control unit 21 can provide a corresponding precharge control signal to the precharge switch unit 22. When the precharge switch unit 22 is turned on under the control of the precharge control signal, it can provide the power signal provided by the energy storage battery 60 to the precharge current limiting unit 23. This allows the precharge current limiting unit 23 to limit the current signal when the power signal is transmitted to the electrical load 70, thereby preventing surge phenomena, improving the service life of the energy storage battery 60, and increasing the start-up success rate of the portable energy storage device.

[0076] Optional, Figure 3 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention, for reference. Figure 3 The precharge control unit 21 includes a first voltage divider resistor R1, a first transistor Q1, and a first bias resistor R2. The first end of the first voltage divider resistor R1 is electrically connected to the push-button switch module 10, and the second end of the first voltage divider resistor R1 is electrically connected to the gate of the first transistor Q1. The first terminal of the first transistor Q1 is electrically connected to the negative terminal of the energy storage battery 60, and the second terminal of the first transistor Q1 is electrically connected to the control terminal of the precharge switch unit 22. The first bias resistor R2 is electrically connected between the gate of the first transistor Q1 and the first terminal of the first transistor Q1.

[0077] Understandably, the positive terminal of the energy storage battery 60 can provide a positive power signal, and the negative terminal of the energy storage battery 60 can provide a negative power signal. The positive power signal is usually a high-level signal, and the negative power signal is usually a low-level signal.

[0078] The first voltage divider resistor R1 divides the key signal provided by the key switch module 10 to meet the turn-on or turn-off conditions of the first transistor Q1. By setting a first bias resistor R2 between the gate and the first electrode of the first transistor Q1, the voltage difference between the gate and the first electrode of the first transistor Q1 is stably clamped to the bias voltage, thus meeting the turn-on or turn-off conditions of the first transistor Q1. The first transistor Q1 can be either all N-type MOSFETs or all P-type MOSFETs; the specific design can be tailored to actual needs, and this embodiment of the invention does not impose any specific limitations on this.

[0079] For example, when the first transistor Q1 is an N-type MOSFET, when the push-button switch module 10 outputs a high-level button signal, the high-level button signal is divided by the first voltage divider resistor R1 and provided to the first transistor Q1, which can control the first transistor Q1 to conduct. This allows the push-button switch module 10 to provide a pre-charge control signal to the pre-charge switch unit 22 to control its conduction. When the push-button switch module 10 cannot output a high-level button signal, the gate of the first transistor Q1 is clamped by the first bias resistor R1 to a low level consistent with the polarity of the negative power supply signal, causing the first transistor Q1 to turn off. This prevents the push-button switch unit 22 from receiving the pre-charge control signal, leaving the pre-charge switch unit 22 in a closed state. Thus, by controlling the first transistor Q1 to conduct or turn off, the pre-charge control signal provided to the pre-charge switch unit 22 can be controlled, thereby accurately controlling the conduction or shutdown of the pre-charge switch unit 22 and preventing accidental activation of the pre-charge switch unit 22, which would result in unnecessary energy waste.

[0080] Optional, continue to refer to Figure 3 The precharge control unit 21 also includes a first capacitor C1; the first capacitor C1 is electrically connected between the negative terminal of the energy storage battery 60 and the gate of the first transistor Q1.

[0081] Specifically, by further setting a first capacitor C1 in the precharge control unit 21, the first capacitor C1 and the first voltage divider resistor R1 form an RC filter circuit, which can filter the button signal provided by the button switch module 10, thereby improving the stability of the button signal provided by the button switch module 10 to the gate of the first transistor Q1.

[0082] Optional, continue to refer to Figure 3 The precharge switch unit 22 includes a second voltage divider resistor R3, a second bias resistor R4, and a second transistor Q2. The first end of the second voltage divider resistor R3 is electrically connected to the output terminal of the precharge control unit 21, and the second end of the second voltage divider resistor R3 is electrically connected to the gate of the second transistor Q2. The first terminal of the second transistor Q2 is electrically connected to the positive terminal of the energy storage battery 60, and the second terminal of the second transistor Q2 is electrically connected to the input terminal of the precharge current limiting unit 23. The second bias resistor R4 is electrically connected between the gate of the second transistor Q2 and the first terminal of the second transistor Q2.

[0083] The second voltage divider resistor R3 divides the precharge control signal provided by the precharge control unit 21 to meet the turn-on or turn-off conditions of the second transistor Q2. A second bias resistor R4 is provided between the gate and the first terminal of the second transistor Q2, stabilizing the voltage difference between them to a bias voltage, thus satisfying the turn-on or turn-off conditions of the second transistor Q2. The second transistor Q2 can be either all N-type MOSFETs or all P-type MOSFETs; the specific design can be tailored to actual needs, and this embodiment of the invention does not impose any specific limitations on this.

[0084] For example, when the first transistor Q1 is an N-type MOSFET and the second transistor Q2 is a P-type MOSFET, when the push-button switch module 10 provides a high-level push-button signal to the pre-charge control unit 21, the high-level push-button signal is divided by the first voltage divider resistor R1 and provided to the first transistor Q1. The first transistor Q1 is turned on, thereby providing the low-level negative power supply signal of the negative terminal of the energy storage battery 60 as a pre-charge control signal to the pre-charge switch unit. The low-level pre-charge control signal is divided by the second voltage divider resistor R3 and provided to the second transistor Q2. The second transistor Q2 is turned on, and the energy storage battery 60 can provide a positive power supply signal to the pre-charge current limiting unit 23 through the turned-on second transistor Q2, so that the pre-charge current limiting unit 23 can control the positive power supply signal to limit the current for pre-charging of the electrical load 70. When the button switch module 10 cannot provide a button signal to the precharge control unit 21, the gate of the first transistor Q1 cannot receive the high-level button signal after being divided by the first voltage divider resistor R1. The voltage of the gate of the first transistor Q1 is clamped to a low level consistent with the polarity of the negative power supply signal, and the first transistor Q1 is turned off. The negative power supply signal cannot be provided to the second transistor Q2 through the first transistor Q1, so the voltage of the gate of the second transistor Q2 is clamped to a high level consistent with the polarity of the positive power supply signal, and the second transistor Q2 is turned off. The energy storage battery 60 cannot provide a power signal to the precharge current limiting unit 23 through the second transistor Q2, and thus cannot precharge the electrical load 70. In this way, by controlling the second transistor Q2 to be turned on or off, the connection path between the energy storage battery 60 and the precharge current limiting unit 23 can be controlled, thereby controlling the precharge time for precharging the electrical load 70 and realizing the precharge start-up of the energy storage device.

[0085] Optional, continue to refer to Figure 3 The precharge current limiting unit 23 includes a current limiting resistor R5; the first end of the current limiting resistor R5 is electrically connected to the output end of the precharge switch unit 22, the second end of the current limiting resistor R5 is electrically connected to the positive power signal terminal of the electrical load 70, and the negative power signal terminal of the electrical load 70 is electrically connected to the negative terminal of the energy storage battery 60.

[0086] Among them, the current-limiting resistor R5 can limit the current of the signal provided by the energy storage battery 60 to the electrical load 70 to a limited current, prevent the energy storage battery 60 from generating a high surge current when it starts to power the electrical load 70, and improve the service life of the energy storage battery 60.

[0087] Optional, Figure 4 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention, for reference. Figure 4 The self-maintaining module 50 includes a maintenance control unit 51 and a maintenance switch unit 52. The control terminal of the maintenance control unit 51 is electrically connected to the main control module 40, and the output terminal of the maintenance control unit 51 is electrically connected to the control terminal of the maintenance switch unit 52. The maintenance control unit 51 is used to provide a maintenance control signal to the maintenance switch unit 52 according to the self-maintaining signal. The input terminal of the maintenance switch unit 52 is electrically connected to the energy storage battery 60, and the output terminal of the maintenance switch unit 52 is electrically connected to the electrical load 70. The maintenance switch unit 52 is used to control the power signal of the energy storage battery 60 to supply power to the electrical load 70 according to the maintenance control signal.

[0088] The maintenance control unit 51, under the control of the self-maintaining signal provided by the main control module 40, provides a maintenance control signal to the maintenance switch unit 52 to control the conduction of the maintenance switch unit 52, so that the power signal of the energy storage battery 60 can supply power to the electrical load 70 through the maintenance switch unit 52. Thus, after the button signal disappears, the energy storage battery 60 can continuously supply power to the electrical load 70 to meet the power demand of the electrical load 70.

[0089] For example, when the load voltage and battery voltage reach a preset ratio, the main control module 40 can provide a self-sustaining signal to the maintenance control unit 51. The maintenance control unit 51 provides a maintenance control signal to the maintenance switch unit 52 based on the self-sustaining signal, controlling the maintenance switch unit 52 to be turned on. The power signal of the energy storage battery 60 can continuously supply power to the electrical load 70 through the turned-on maintenance switch unit 52, meeting the power demand of the electrical load 70. However, when the load voltage and battery voltage do not reach the preset ratio, the main control module 40 cannot provide a self-sustaining signal to the maintenance control unit 51, and the maintenance control unit 51 cannot provide a maintenance control signal to the maintenance switch unit 52 to control the maintenance switch unit 52 to be turned on, causing the maintenance switch unit 52 to be turned off. The power signal of the energy storage battery 60 cannot supply power to the electrical load 70 through the maintenance switch unit 52. Thus, under the control of the self-maintenance signal, the maintenance control unit 51 can provide a corresponding maintenance control signal to the maintenance switch unit 52, so that the maintenance switch unit 52 is turned on under the control of the maintenance control signal, so as to provide the power signal provided by the energy storage battery 60 to the electrical load 70. In this way, after the button signal disappears, it can continuously supply power to the electrical load 70, meet the power demand of the electrical load 70, and improve the operational stability and ease of operation of the portable energy storage device.

[0090] Optional, Figure 5 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention, for reference. Figure 5 The maintenance control unit 51 includes a third voltage divider resistor R6, a third transistor Q3, and a third bias resistor R7. The first end of the third voltage divider resistor R6 is electrically connected to the main control module 40, and the second end of the third voltage divider resistor R6 is electrically connected to the gate of the third transistor Q3. The first terminal of the third transistor Q3 is electrically connected to the negative terminal of the energy storage battery 60, and the second terminal of the third transistor Q3 is electrically connected to the control terminal of the maintenance switch unit 52. The third bias resistor R7 is electrically connected between the gate of the third transistor Q3 and the first terminal of the third transistor Q3.

[0091] The third voltage divider resistor R6 divides the self-sustaining signal provided by the main control module 40 to meet the turn-on or turn-off conditions of the third transistor Q3. A third bias resistor R7 is provided between the gate and the first electrode of the third transistor Q3 to stably clamp the voltage difference between them to the bias voltage, thus meeting the turn-on or turn-off conditions of the third transistor Q3. The third transistor Q3 can be either all N-type MOSFETs or all P-type MOSFETs; the specific design can be tailored to actual needs, and this embodiment of the invention does not impose specific limitations on this.

[0092] For example, when the third transistor Q3 is an N-type MOSFET, the main control module 40 can output a high-level self-sustaining signal when the load voltage and battery voltage reach a preset ratio. This high-level self-sustaining signal is divided by the third voltage divider resistor R6 and provided to the third transistor Q3, controlling its conduction. This allows the main control module 40 to provide a sustaining control signal to the sustaining switch unit 52 to control its conduction. When the load voltage and battery voltage do not reach the preset ratio, the main control module 40 cannot provide the self-sustaining signal. The gate of the third transistor Q3 is clamped to a low level, consistent with the polarity of the negative power supply signal, by the third bias resistor R7, causing the third transistor Q3 to turn off. Therefore, the main control module 40 cannot provide a sustaining control signal to the sustaining switch unit 52 to control its conduction. Thus, by controlling the conduction or deactivation of the third transistor Q3, the sustaining control signal provided to the sustaining switch unit 52 can be controlled, thereby accurately controlling the conduction or deactivation of the sustaining switch unit 52 and preventing accidental activation of the sustaining switch unit 52, which would result in unnecessary energy waste.

[0093] Optional, continue to refer to Figure 5 The control unit 51 also includes a second capacitor C2; the second capacitor C2 is electrically connected between the negative terminal of the energy storage battery 60 and the gate of the third transistor Q3.

[0094] Specifically, by further setting a second capacitor C2 in the sustaining control unit 51, the second capacitor C2 and the third voltage divider resistor R6 form an RC filter circuit, which can filter the self-sustaining signal provided by the main control module 40, thereby improving the stability of the self-sustaining signal provided by the main control module 40 to the gate of the third transistor Q3.

[0095] Optional, continue to refer to Figure 5 The sustaining switch unit 52 includes a fourth voltage divider resistor R8, a fourth bias resistor R9, and a fourth transistor Q4. The first end of the fourth voltage divider resistor R8 is electrically connected to the output terminal of the sustaining control unit 51, and the second end of the fourth voltage divider resistor R8 is electrically connected to the gate of the fourth transistor Q4. The first terminal of the fourth transistor Q4 is electrically connected to the positive terminal of the energy storage battery 60, the second terminal of the fourth transistor Q4 is electrically connected to the positive power supply signal terminal of the electrical load 70, and the negative power supply signal terminal of the electrical load 70 is electrically connected to the negative terminal of the energy storage battery 60. The fourth bias resistor R9 is electrically connected between the gate of the fourth transistor Q4 and the first terminal of the fourth transistor Q4.

[0096] The fourth voltage divider resistor R8 divides the sustaining control signal provided by the sustaining control unit 51 to meet the turn-on or turn-off conditions of the fourth transistor Q4. A fourth bias resistor R9 is provided between the gate and the first terminal of the fourth transistor Q4, stabilizing the voltage difference between them to a bias voltage, thus meeting the turn-on or turn-off conditions of the fourth transistor Q4. The fourth transistor Q4 can be either all N-type MOSFETs or all P-type MOSFETs; the specific design can be tailored to actual needs, and this embodiment of the invention does not impose any specific limitations.

[0097] For example, when the third transistor Q3 is an N-type MOSFET and the fourth transistor Q4 is a P-type MOSFET, when the load voltage and battery voltage reach a preset ratio, the main control module 40 can provide a high-level self-sustaining signal to the sustaining control unit 51. The high-level self-sustaining signal is provided to the third transistor Q3 after being divided by the third voltage divider resistor R6. The third transistor Q3 is turned on, thereby providing the low-level negative power supply signal at the negative terminal of the energy storage battery 60 as a sustaining control signal to the sustaining switch unit 52. The low-level sustaining control signal is provided to the fourth transistor Q4 after being divided by the fourth voltage divider resistor R8. The fourth transistor Q4 is turned on, and the energy storage battery 60 can continuously supply power to the electrical load 70 through the fourth transistor Q4. When the load voltage and battery voltage do not reach a preset ratio, the main control module 40 will not provide a self-sustaining signal to the sustaining control unit 51. The gate of the third transistor Q3 cannot receive the high-level self-sustaining signal after voltage division by the third voltage divider resistor R6, and the third transistor Q3 is turned off. The negative power signal cannot be provided to the fourth transistor Q4 through the third transistor Q3, causing the gate of the fourth transistor Q4 to be clamped to a high level with the same polarity as the positive power signal, and the fourth transistor Q4 is turned off. Therefore, the energy storage battery 60 cannot supply power to the electrical load 70 through the fourth transistor Q4. Thus, by controlling the fourth transistor Q4 to turn on or off, the connection path between the energy storage battery 60 and the electrical load 70 can be controlled, allowing the energy storage battery 60 to continuously supply power to the electrical load 70 and meet the power demand of the electrical load 70.

[0098] Optional, Figure 6 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention, for reference. Figure 6The button switch module 10 includes a button interaction unit 11 and a button switch unit 12; the button interaction unit 11 is electrically connected to the control terminal of the button switch unit 12; the button interaction unit 11 is used to receive external commands and provide button control signals to the button switch unit 12 according to the external commands; the input terminal of the button switch unit 12 is electrically connected to the energy storage battery 60, and the output terminal of the button switch unit 12 is electrically connected to the pre-charge start-up module 20; the button switch unit 12 is used to control the button signals provided to the pre-charge start-up module 20 according to the button control signals and the power signals of the energy storage battery 60.

[0099] Users can interact with the portable energy storage device through the button interaction unit 11. The button interaction unit 11 can receive external commands provided by the user, such as pressing the switch in the button interaction unit 11. When the user presses the switch in the button interaction unit 11, the button interaction unit 11 can provide a button control signal to the button switch unit 12. The button control signal can control the button switch unit 12 to conduct, so that the button switch unit 12 can provide the power signal of the energy storage battery 60 as a button signal to the precharge start-up module 20. When the switch in the button interaction unit 11 is not pressed, the button interaction unit 11 cannot provide a button control signal to control the button switch unit 12 to conduct, so that the power signal of the energy storage battery 60 cannot be transmitted to the precharge start-up module 20, and the precharge start-up module 20 cannot receive the button signal.

[0100] In this embodiment, by setting a button interaction unit 11 and a button switch unit 12 in the button switch module 10, the button interaction unit 11 can interact with the user and provide corresponding button switch signals to the button switch unit 12 according to the interaction results. This allows the button switch unit 12 to control the path of the power signal of the energy storage battery 60 to the precharge start-up module 20 according to the button switch signal. In this way, the precharge start-up module 20 can control the energy storage battery 60 to precharge the electrical load 70, thereby controlling the start-up of the energy storage device and preventing surge phenomena.

[0101] Optional, Figure 7 This is a schematic diagram of the start-up control circuit of another portable energy storage device provided in an embodiment of the present invention; see reference. Figure 7 The button interaction unit 11 includes a mechanical switch; the first end of the mechanical switch is electrically connected to the negative terminal of the energy storage battery 60, and the second end of the mechanical switch is electrically connected to the control terminal of the button switch unit 12.

[0102] The mechanical switch can be, but is not limited to, push-button switches, toggle switches, or rotary switches. As long as the user interaction function can be realized, the specific type of mechanical switch in the button interaction unit 11 is not limited in this embodiment of the invention.

[0103] Specifically, the first end of the mechanical switch is electrically connected to the negative terminal of the energy storage battery 60, enabling the first end of the mechanical switch to receive the negative power signal from the negative terminal of the energy storage battery 60. When the mechanical switch is closed, the negative power signal from the negative terminal of the energy storage battery 60 can be provided to the button switch unit 12 as a button control signal. When the mechanical switch is open, the negative power signal from the negative terminal of the energy storage battery 60 cannot be provided to the button switch unit as a button control signal. Thus, by setting a mechanical switch in the button interaction unit 11, user operation is facilitated, and ease of operation is improved.

[0104] Optional, continue to refer to Figure 7 The push-button switch unit 12 includes a fifth transistor Q5, a fifth voltage divider resistor R10, and a sixth voltage divider resistor R11. The gate of the fifth transistor Q5 is electrically connected to the push-button interaction unit 11. The first terminal of the fifth transistor Q5 is electrically connected to the positive terminal of the energy storage battery 60 through the fifth voltage divider resistor R10. The first terminal of the fifth transistor Q5 is also electrically connected to the negative terminal of the energy storage battery 60 through the sixth voltage divider resistor R11. The second terminal of the fifth transistor Q5 is electrically connected to the pre-charge start-up module 20.

[0105] Specifically, the first terminal of the fifth transistor Q5 is electrically connected to the positive terminal of the energy storage battery 60 through the fifth voltage divider resistor R10. This can be understood as the first end of the fifth voltage divider resistor R10 being electrically connected to the positive terminal of the energy storage battery 60, and the second end of the fifth voltage divider resistor R10 being electrically connected to the first terminal of the fifth transistor Q5. This allows the positive power signal from the positive terminal of the energy storage battery 60 to be divided and provided to the fifth transistor Q5 by the fifth voltage divider resistor R10. Similarly, the first terminal of the fifth transistor Q5 is electrically connected to the negative terminal of the energy storage battery 60 through the sixth voltage divider resistor R11. This can be understood as the first end of the sixth voltage divider resistor R11 being electrically connected to the first terminal of the fifth transistor Q5, and the second end of the sixth voltage divider resistor R11 being electrically connected to the negative terminal of the energy storage battery 60. The second terminal of 1 is the negative power supply signal of the negative terminal of the energy storage battery 60. This allows the positive terminal of the energy storage battery 60 to form a corresponding circuit with the negative terminal through the fifth voltage divider resistor R10 and the sixth voltage divider resistor R11. This enables the fifth voltage divider resistor R10 and the sixth voltage divider resistor R11 to divide the positive power supply signal of the energy storage battery 60 and provide it to the fifth transistor Q5. When the button switch signal controls the fifth transistor Q5 to conduct, the positive power supply signal divided by the fifth voltage divider resistor R10 and the sixth voltage divider resistor R11 can be provided as a button signal to the pre-charge start-up module 20 to control the pre-charge start-up module 20 to pre-charge the electrical load 70. Pre-charge start-up of the energy storage device can be achieved without an external power supply, simplifying the structure of the energy storage device. The fifth transistor Q5 can be either an N-type MOSFET or a P-type MOSFET; the specific design can be tailored to actual needs, and this embodiment of the invention does not impose specific limitations on this.

[0106] For example, when the fifth transistor Q5 is a P-type MOSFET, when the user provides a start command to the button interaction unit 11, the button interaction unit 11 provides a low-level button control signal to the fifth transistor Q5, the fifth transistor Q5 is turned on, and the positive power supply signal at the positive terminal of the energy storage battery 60 can be divided by the fifth voltage divider resistor R10 and the sixth voltage divider resistor R11 and then provided as a button signal to the precharge start module 20 to control the precharge start module 20 to precharge the electrical load 70; when the button interaction unit 11 does not receive a start command, the button interaction unit 11 cannot provide a button control signal to the fifth transistor Q5, the fifth transistor Q5 is turned off, the fifth transistor Q5 cannot provide a button signal to the precharge start module 20, and the precharge start module 20 cannot precharge the electrical load 70. Thus, through the interaction results between the button interaction unit 11 and the user, the state of the fifth transistor Q5 can be controlled to control whether to provide a button signal to the precharge start module 20, thereby controlling the pre-charging process of the energy storage battery 60 to the electrical load 70, and thus accurately controlling the switching state of the portable energy storage device while preventing surge current.

[0107] Based on the same inventive concept, the present invention also provides a portable energy storage device, including: an energy storage battery 60 and a start-up control circuit for the portable energy storage device; the start-up control circuit for the portable energy storage device is electrically connected to the energy storage battery and the electrical load respectively.

[0108] Furthermore, the portable energy storage device may also include a housing that can enclose the energy storage battery 60 and the start-up control circuit of the portable energy storage device, thereby providing a certain degree of protection for the energy storage battery 60 and the start-up control circuit of the portable energy storage device during handling and movement. It is understood that the specific structure of the portable energy storage device can be designed according to actual needs, and this embodiment of the invention does not impose specific limitations on it.

[0109] The portable energy storage device provided in this embodiment includes the start-up control circuit of the portable energy storage device in any embodiment of the present invention, and therefore has the beneficial effects of the start-up control circuit of the corresponding portable energy storage device. The similarities can be referred to the above description, and will not be repeated here.

[0110] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A start-up control circuit for a portable energy storage device, characterized in that, The portable energy storage device includes an energy storage battery, and the start-up control circuit of the portable energy storage device includes: The button switch module is used to receive external commands and output a button signal when the received external command is a start command; The pre-charge start-up module is electrically connected to the button switch module, the energy storage battery, and the electrical load, respectively; the pre-charge start-up module is used to control the energy storage battery to pre-charge the electrical load with a limited current under the control of the button signal; A voltage detection module is electrically connected to both the energy storage battery and the electrical load; the voltage detection module is used to detect the battery voltage of the energy storage battery and the load voltage of the electrical load in real time. The main control module is electrically connected to the voltage detection module; the main control module is used to output a self-sustaining signal when the load voltage and the battery voltage reach a preset ratio. The self-sustaining module is electrically connected to the main control module, the energy storage battery, and the electrical load, respectively. The self-sustaining module is used to control the energy storage battery to supply power to the electrical load under the control of the self-sustaining signal.

2. The start-up control circuit for the portable energy storage device according to claim 1, characterized in that, The precharge start-up module includes a precharge control unit, a precharge switch unit, and a precharge current limiting unit; The control terminal of the precharge control unit is electrically connected to the button switch module, and the output terminal of the precharge control unit is electrically connected to the control terminal of the precharge switch unit; the precharge control unit is used to output a precharge control signal according to the button signal; The input terminal of the precharge switch unit is electrically connected to the energy storage battery, and the output terminal of the precharge switch unit is electrically connected to the input terminal of the precharge current limiting unit; the precharge switch unit is used to control the energy storage battery to provide a power signal to the precharge current limiting unit according to the precharge control signal. The output terminal of the precharge current limiting unit is electrically connected to the electrical load; the precharge current limiting unit is used to control the power signal of the energy storage battery to precharge the electrical load with the limited current.

3. The start-up control circuit for the portable energy storage device according to claim 2, characterized in that, The precharge control unit includes a first voltage divider resistor, a first transistor, and a first bias resistor; The first end of the first voltage divider resistor is electrically connected to the push-button switch module, and the second end of the first voltage divider resistor is electrically connected to the gate of the first transistor. The first terminal of the first transistor is electrically connected to the negative terminal of the energy storage battery, and the second terminal of the first transistor is electrically connected to the control terminal of the precharge switch unit. The first bias resistor is electrically connected between the gate of the first transistor and the first terminal of the first transistor.

4. The start-up control circuit for the portable energy storage device according to claim 3, characterized in that, The precharge control unit also includes a first capacitor; The first capacitor is electrically connected between the negative terminal of the energy storage battery and the gate of the first transistor.

5. The start-up control circuit for the portable energy storage device according to claim 2, characterized in that, The precharge switch unit includes a second voltage divider resistor, a second bias resistor, and a second transistor; The first end of the second voltage divider resistor is electrically connected to the output terminal of the precharge control unit, and the second end of the second voltage divider resistor is electrically connected to the gate of the second transistor. The first terminal of the second transistor is electrically connected to the positive terminal of the energy storage battery, and the second terminal of the second transistor is electrically connected to the input terminal of the precharge current limiting unit. The second bias resistor is electrically connected between the gate of the second transistor and the first terminal of the second transistor.

6. The start-up control circuit for the portable energy storage device according to claim 2, characterized in that, The pre-charge current limiting unit includes a current limiting resistor; The first end of the current-limiting resistor is electrically connected to the output end of the pre-charge switch unit, the second end of the current-limiting resistor is electrically connected to the positive power signal terminal of the electrical load, and the negative power signal terminal of the electrical load is electrically connected to the negative terminal of the energy storage battery.

7. The start-up control circuit for the portable energy storage device according to claim 1, characterized in that, The self-maintaining module includes a maintenance control unit and a maintenance switch unit; The control terminal of the maintenance control unit is electrically connected to the main control module, and the output terminal of the maintenance control unit is electrically connected to the control terminal of the maintenance switch unit; the maintenance control unit is used to provide a maintenance control signal to the maintenance switch unit according to the self-maintaining signal; The input terminal of the sustaining switch unit is electrically connected to the energy storage battery, and the output terminal of the sustaining switch unit is electrically connected to the electrical load. The sustaining switch unit is used to control the power signal of the energy storage battery to supply power to the electrical load according to the sustaining control signal.

8. The start-up control circuit for the portable energy storage device according to claim 7, characterized in that, The sustaining control unit includes a third voltage divider resistor, a third transistor, and a third bias resistor; The first end of the third voltage divider resistor is electrically connected to the main control module, and the second end of the third voltage divider resistor is electrically connected to the gate of the third transistor. The first terminal of the third transistor is electrically connected to the negative terminal of the energy storage battery, and the second terminal of the third transistor is electrically connected to the control terminal of the sustaining switch unit. The third bias resistor is electrically connected between the gate of the third transistor and the first electrode of the third transistor.

9. The start-up control circuit for the portable energy storage device according to claim 8, characterized in that, The maintenance control unit also includes a second capacitor; The second capacitor is electrically connected between the negative terminal of the energy storage battery and the gate of the third transistor.

10. The start-up control circuit of the portable energy storage device according to claim 7, characterized in that, The sustaining switch unit includes a fourth voltage divider resistor, a fourth bias resistor, and a fourth transistor; The first end of the fourth voltage divider resistor is electrically connected to the output terminal of the sustaining control unit, and the second end of the fourth voltage divider resistor is electrically connected to the gate of the fourth transistor. The first terminal of the fourth transistor is electrically connected to the positive terminal of the energy storage battery, the second terminal of the fourth transistor is electrically connected to the positive power signal terminal of the electrical load, and the negative power signal terminal of the electrical load is electrically connected to the negative terminal of the energy storage battery. The fourth bias resistor is electrically connected between the gate of the fourth transistor and the first electrode of the fourth transistor.

11. The start-up control circuit for the portable energy storage device according to claim 1, characterized in that, The button switch module includes a button interaction unit and a button switch unit; The button interaction unit is electrically connected to the control terminal of the button switch unit; the button interaction unit is used to receive external commands and provide button control signals to the button switch unit according to the external commands. The input terminal of the push-button switch unit is electrically connected to the energy storage battery, and the output terminal of the push-button switch unit is electrically connected to the pre-charge start-up module; the push-button switch unit is used to control the push-button signal provided to the pre-charge start-up module according to the push-button control signal and the power signal of the energy storage battery.

12. The start-up control circuit for the portable energy storage device according to claim 11, characterized in that, The button interaction unit includes a mechanical switch; The first end of the mechanical switch is electrically connected to the negative terminal of the energy storage battery, and the second end of the mechanical switch is electrically connected to the control terminal of the push-button switch unit.

13. The start-up control circuit for the portable energy storage device according to claim 11, characterized in that, The push-button switch unit includes a fifth transistor, a fifth voltage divider resistor, and a sixth voltage divider resistor; The gate of the fifth transistor is electrically connected to the button interaction unit, the first terminal of the fifth transistor is electrically connected to the positive terminal of the energy storage battery through the fifth voltage divider resistor, the first terminal of the fifth transistor is also electrically connected to the negative terminal of the energy storage battery through the sixth voltage divider resistor, and the second terminal of the fifth transistor is electrically connected to the pre-charge start-up module.

14. A portable energy storage device, characterized in that, include: A start-up control circuit for an energy storage battery and a portable energy storage device according to any one of claims 1-13; The start-up control circuit of the portable energy storage device is electrically connected to the energy storage battery and the electrical load, respectively.

Images