CN217642785U - A Novel Protection Inverter Module and Portable Energy Storage Power Supply - Google Patents

Abstract

The utility model discloses a novel protection inverter module and a portable energy storage power supply, which relate to the technical field of energy storage power supply, and solve the inconvenience of operation after the power supply of the portable energy storage power supply, high production, maintenance and maintenance costs, and easy to produce Technical issues with security risks. The novel protection inverter module includes a transformer, a rectifier module, a discharge module and an inverter module; the primary winding of the transformer is connected to the battery, the secondary winding is connected to the rectifier module, and the rectifier module is connected to the inverter module, The discharge module is connected in parallel between the rectifier module and the inverter module; the discharge module includes a resistor R1 and a switch tube Q1, the resistor R1 is connected to the drain of the switch tube Q1, and the switch tube Q1 is conducting. Discharge can be performed after switching on. The utility model has the advantages of simple discharge operation, low cost, good safety and convenient large-scale use of portable energy storage power sources when maintenance and debugging operations are required, and when production is aging.

Description

A Novel Protection Inverter Module and Portable Energy Storage Power Supply

technical field

The utility model relates to the technical field of energy storage power supplies, in particular to a novel protection inverter module and a portable energy storage power supply.

Background technique

With the development of economy and society, there are more and more mobile electronic devices, showing a trend of diversification and electrification. The usage scenarios are not only limited to powered indoors, but also have huge market demands in outdoor scenarios without power. In this context, the portable energy storage power supply emerges as the times require. The portable energy storage power supply is a kind of portable energy storage power supply that can be carried by individuals and can store electric energy by itself. It integrates DC DC output and AC AC110V/220V output, which not only meets the mobile application scenarios, but also It has played a major role in emergency scenarios such as power failure areas and natural disasters.

The portable energy storage power supply realizes AC110V/220V output through the inverter module or module. During the production and use process, it is necessary to carry out maintenance and debugging after the power failure. The existing portable energy storage power supply is inconvenient to operate after the power failure, production maintenance and maintenance. The cost is high, and it is also prone to security risks.

In the process of realizing the present utility model, the applicant found that there are at least the following problems in the prior art:

The operation of the portable energy storage power supply after power failure is relatively inconvenient, the production and maintenance costs are high, and it is also prone to safety hazards, which affects the large-scale use of the portable energy storage power supply.

Utility model content

The purpose of this utility model is to provide a novel protection inverter module and a portable energy storage power supply, so as to solve the inconvenience of operation after the power failure of the portable energy storage power supply in the prior art, the production and maintenance costs are high, and it is easy to It has caused potential safety hazards and affected the technical problems of the large-scale use of portable energy storage power sources. The technical effects that can be produced by the preferred technical solutions among the technical solutions provided by the present invention are detailed in the following descriptions.

To achieve the above object, the utility model provides the following technical solutions:

The utility model provides a novel protection inverter module, comprising a transformer, a rectifier module, a discharge module and an inverter module; the primary winding of the transformer is connected to the battery, the secondary winding is connected to the rectifier module, and the rectifier module connected with the inverter module, the discharge module is connected in parallel between the rectifier module and the inverter module; the discharge module includes a resistor R1 and a switch tube Q1, and the resistor R1 is connected to the drain of the switch tube Q1 , the switch tube Q1 can discharge after being turned on.

Preferably, the switch tube Q1 is controlled to be turned on and off by a main control chip.

Preferably, the discharge module further includes a polar capacitor C5, the positive electrode of the polar capacitor C5 is connected to the other end of the resistor R1, and the negative electrode of the polar capacitor C5 is connected to the source electrode of the switch tube Q1 .

Preferably, the transformer is provided with two primary windings and one secondary winding, the input common terminals of the two primary windings are connected to the battery input terminal, and an overcurrent protection module is connected between the input common terminal and the battery input terminal. , the overcurrent protection module performs overcurrent protection through copper foil wiring.

Preferably, the output ends of the two primary windings are respectively connected to the MOS transistor Q2 and the MOS transistor Q7, and the MOS transistor Q2 and the MOS transistor Q7 are both NMOS transistors.

Preferably, a polar capacitor C3 is also connected to the input end of the battery, and the positive electrode and the negative electrode of the polar capacitor C3 are respectively connected to the positive electrode and the negative electrode of the battery.

Preferably, the inverter module is a full-bridge inverter module, including a power MOS transistor Q3, a power MOS transistor Q4, a power MOS transistor Q5, and a power MOS transistor Q6. The power MOS transistor Q3, the power MOS transistor Q4, and the power MOS transistor The tube Q5 and the power MOS tube Q6 are both NMOS tubes.

Preferably, the gate voltages of the power MOS transistor Q3, the power MOS transistor Q4, the power MOS transistor Q5, and the power MOS transistor Q6 are all adjusted by PWM.

Preferably, an inductor L1 is also connected to the source of the power MOS transistor Q4 and the drain of the power MOS transistor Q5.

A portable energy storage power supply, comprising a novel protection inverter module described in any one of the above.

Implementing one of the technical solutions of the present utility model has the following advantages or beneficial effects:

The utility model can realize discharge by controlling the grid voltage of the switching tube Q1 when maintenance and debugging operations are required, and when the production is aging, the operation is simple, the cost is low, the safety is high, and the portable energy storage power supply is convenient. of large-scale use.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained according to these drawings, in the drawings:

Fig. 1 is the principle block diagram of the embodiment of the present utility model;

FIG. 2 is a schematic circuit diagram of an embodiment of the present invention.

Detailed ways

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, various exemplary embodiments to be described hereinafter will be referred to the corresponding accompanying drawings, which form a part of the exemplary embodiments in which the implementation of the present invention is described. Various exemplary embodiments that the utility model may take. The same numbers in different figures represent the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. It should be understood that they are merely examples of processes, methods, apparatus, etc. consistent with some aspects of the present disclosure, as detailed in the appended claims, and that other embodiments may also be used, or examples of those recited herein. Structural and functional modifications may be made to the embodiments of the present invention without departing from the scope and spirit of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "horizontal", etc. refer to the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplification describe, rather than indicate or imply, the particular orientation that the referred element must have, be constructed in, and operate in the particular orientation. The terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. The term "plurality" means two or more. The terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediate medium, and may be two elements Internal connectivity or interaction between two elements. The term "and/or" includes any and all combinations of one or more of the associated listed items. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In order to illustrate the technical solutions of the present invention, specific embodiments are used for description below, and only the parts related to the embodiments of the present invention are shown.

Example 1:

As shown in Figures 1-2, the present utility model provides a novel protection inverter module, which includes a transformer T1, a rectifier module, a discharge module and an inverter module. The primary winding of the transformer T1 is connected to the battery, and the secondary winding is connected to the rectifier module. The DC output voltage of the battery is boosted by the transformer T1, and high-voltage AC power is obtained from the secondary winding, and high-voltage DC power is obtained through the rectifier module. The battery, transformer T1, and rectifier module form a DC-DC boost circuit, which increases the output voltage of the portable energy storage power supply, so as to achieve 220V AC voltage output through the inverter module. The rectifier module is connected to the inverter module, and the discharge module is connected in parallel between the rectifier module and the inverter module; the discharge module includes a resistor R1 and a switch tube Q1, the resistor R1 is connected to the drain of the switch tube Q1, and the switch tube Q1 can be turned on after being turned on. Discharge ensures safe operation. The switch tube Q1 can be turned on by controlling the gate voltage, and the resistor R1 performs current limiting protection when the switch tube Q1 is turned on. The utility model can realize discharge by controlling the grid voltage of the switching tube Q1 when maintenance and debugging operations are required, and when the production is aging, the operation is simple, the cost is low, the safety is high, and the portable energy storage power supply is convenient. of large-scale use.

As an optional implementation manner, the switch tube Q1 is controlled to be turned on and off through the main control chip. The main control chip can be an MCU, and the MCU generates high and low levels to control the gate voltage to realize the on and off of the switch tube Q1. In this embodiment, when the MCU generates a high level, the switch Q1 is turned on, and the discharge module discharges. The discharge module further includes a polar capacitor C5, the positive electrode of the polar capacitor C5 is connected to the other end of the resistor R1, and the negative electrode of the polar capacitor C5 is connected to the source electrode of the switch tube Q1. The polar capacitor C5 stores and filters the boosted circuit to avoid instantaneous high voltage damage to the MOS tube in the inverter module, making the entire inverter module safer to use.

As an optional embodiment, the transformer is provided with two primary windings and one secondary winding, the input common terminal of the two primary windings is connected to the input terminal of the battery, and the two primary windings can convert the stable DC voltage of the battery into a variable voltage, Thus, the voltage is boosted by the transformer T1. The input common end of the two primary windings is connected to the battery input end, and the overcurrent protection module is connected between the input common end and the battery input end. The width and length of the copper foil routing unit are set according to the input voltage, output voltage and other parameters of the inverter module, as well as whether the inverter module is quickly fused when it is short-circuited. When a short circuit occurs in the inverter module to generate an instantaneous high current, the copper foil routing unit can achieve rapid fusing, saving material costs, labor costs, and space for the inverter module, further improving safety and facilitating the large-scale portable energy storage power supply. scale use.

As an optional implementation manner, the output ends of the two primary windings are respectively connected to the MOS transistor Q2 and the MOS transistor Q7, and both the MOS transistor Q2 and the MOS transistor Q7 are NMOS transistors. It is preferable that the turns of the two primary windings are equal to facilitate the on-off control of the MOS transistor Q2 and the MOS transistor Q7. Meanwhile, the MOS transistor Q2 and the MOS transistor Q7 are preferably also controlled on and off by PWM.

As an optional embodiment, the rectifier module includes a diode D3, a diode D4, a diode D5, and a diode D6, which are used to improve the reliability and response speed of the entire inverter module and reduce losses in the DC-DC boost circuit.

As an optional embodiment, a polar capacitor C3 is also connected to the input end of the battery, and the positive electrode and the negative electrode of the polar capacitor C3 are respectively connected to the positive electrode and the negative electrode of the battery. The polar capacitor C3 filters the output voltage of the battery to make the output voltage of the battery more stable.

As an optional implementation manner, the inverter module is a full-bridge inverter module, including a power MOS transistor Q3, a power MOS transistor Q4, a power MOS transistor Q5, a power MOS transistor Q6, a power MOS transistor Q3, a power MOS transistor Q4, and a power MOS transistor. The tube Q5 and the power MOS tube Q6 are both NMOS tubes. The full-bridge inverter module facilitates the conversion of direct current into standard sine wave alternating current, and the power MOS tube is convenient to improve the reliability of the inverter module and reduce losses.

As an optional implementation manner, the gate voltages of the power MOS transistor Q3, the power MOS transistor Q4, the power MOS transistor Q5, and the power MOS transistor Q6 are adjusted by PWM, and resistors are connected between the gate electrodes and the source electrodes, respectively. The square wave is generated by PWM adjustment to realize the control of turning on and off the MOS tube, and the PWM level signal is generated by the existing technology, such as MCU. When the gate voltage is high, the MOS tube is turned on, and when the gate voltage is low, the MOS tube is turned off. At the same time, the power MOS tube Q3 and the power MOS tube Q5 are turned on and off at the same time through PWM control, and the power MOS tube Q4 and the power MOS tube Q6 are simultaneously turned on and off. It is turned on and off, and the trigger level signal between the power MOS transistor Q3, the power MOS transistor Q5, the power MOS transistor Q4, and the power MOS transistor Q6 is 180°, thereby realizing the output of standard sine wave. Specifically, a resistor R8, a resistor R7, a resistor R14, and a resistor R15 are connected between the gates and sources of the power MOS transistor Q3, the power MOS transistor Q4, the power MOS transistor Q5, and the power MOS transistor Q6, respectively.

As an optional implementation manner, the source of the power MOS transistor Q4 and the drain of the power MOS transistor Q5 are also connected with an inductor L1, which is on the output live wire to filter the output alternating current. Preferably, a capacitor C2 is also connected between the output live wire and the neutral wire for suppressing the high voltage of the output spike pulse, improving the waveform at the output end, and making the inverter module closer to the sine wave output.

The embodiment is only a special case, and does not indicate that the present invention is such an implementation manner.

Embodiment 2:

A portable energy storage power supply includes a novel protection inverter module in the first embodiment. When maintenance and debugging operations are required, the utility model can realize discharge by controlling the grid voltage of the switching tube Q1 to be turned on, the operation is simple, the cost is low, the safety is high, and the large-scale use of the portable energy storage power supply is convenient. .

The above descriptions are only preferred embodiments of the present invention, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, in the teachings of the present invention, the features and embodiments may be modified to adapt to a particular situation and material without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the present invention.

Claims (10)

1. A novel protection inversion module is characterized by comprising a transformer, a rectification module, a discharge module and an inversion module; the primary winding of the transformer is connected with a battery, the secondary winding of the transformer is connected with the rectifying module, the rectifying module is connected with the inverting module, and the discharging module is connected between the rectifying module and the inverting module in parallel; the discharging module comprises a resistor R1 and a switch tube Q1, the resistor R1 is connected with a drain electrode of the switch tube Q1, and the switch tube Q1 can discharge after being conducted.

2. The novel protection inverter module according to claim 1, wherein the switching tube Q1 is controlled to be turned on and off by a main control chip.

3. The novel protection inverter module according to claim 2, wherein the discharge module further comprises a polar capacitor C5, the positive electrode of the polar capacitor C5 is connected to the other end of the resistor R1, and the negative electrode of the polar capacitor C5 is connected to the source of the switching tube Q1.

4. The novel protection inverter module according to claim 1, wherein the transformer is provided with two primary windings and a secondary winding, an input common terminal of the two primary windings is connected with a battery input terminal, an overcurrent protection module is connected between the input common terminal and the battery input terminal, and the overcurrent protection module performs overcurrent protection through a copper foil wire.

5. The novel protection inverter module according to claim 4, wherein the output ends of the two primary windings are respectively connected to a MOS transistor Q2 and a MOS transistor Q7, and both the MOS transistor Q2 and the MOS transistor Q7 are NMOS transistors.

6. The novel protection inverter module according to claim 4, wherein the battery input terminal is further connected with a polarity capacitor C3, and the positive electrode and the negative electrode of the polarity capacitor C3 are respectively connected with the positive electrode and the negative electrode of the battery.

7. The novel protection inverter module according to claim 1, wherein the inverter module is a full-bridge inverter module, and comprises a power MOS transistor Q3, a power MOS transistor Q4, a power MOS transistor Q5, and a power MOS transistor Q6, and the power MOS transistor Q3, the power MOS transistor Q4, the power MOS transistor Q5, and the power MOS transistor Q6 are NMOS transistors.

8. The novel protection inverter module according to claim 7, wherein the gate voltages of the power MOS transistors Q3, Q4, Q5 and Q6 are all adjusted by PWM.

9. The novel protection inverter module according to claim 8, wherein the source of the power MOS transistor Q4 and the drain of the power MOS transistor Q5 are further connected to an inductor L1.

10. A portable energy storage power supply comprising a novel protective inverter module according to any one of claims 1 to 9.

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