CN217545666U - Non-transient-interruption switching circuit for portable equipment - Google Patents

Abstract

The utility model relates to a no transient interruption switching circuit for portable equipment belongs to portable equipment power supply technical field and includes the load, and this circuit includes battery and socket XS1, diode D2, switch S1 and relay K1, the anodal series connection of battery relay K1 'S switch side is connected socket XS 1' S positive pole, the negative pole ground connection of battery, relay K1 'S switch side both ends are parallelly connected diode D2, the directional socket of diode D2, the anodal series switch S1 connection load of socket, switch S1' S nearly load side process relay K1 'S coil side is connected socket XS 1' S negative pole, the required components and parts of this scheme are less, occupy small, efficient, easy to assemble.

Description

Non-instantaneous-interruption switching circuit for portable equipment

Technical Field

The invention belongs to the technical field of power supply of portable equipment, and relates to a transient interruption-free switching circuit, in particular to a transient interruption-free switching circuit for portable equipment.

Background

The DC power supply has two electrodes, positive and negative, and the positive electrode has high potential and the negative electrode has low potential. A dc power supply is an energy conversion device that converts energy of other forms into electric energy to supply a circuit to maintain a steady flow of current.

The existing direct current uninterrupted switching circuit has the problems of complex design, large volume, low power, heating and the like, cannot be designed into portable equipment, particularly has limited space and high power consumption, and has higher requirements on equipment heat dissipation and battery requirements.

Disclosure of Invention

The invention provides a non-instantaneous-interruption switching circuit for portable equipment, which has the advantages of simple principle, fewer components, small occupied size, high efficiency and convenience in installation.

The technical scheme of the invention is as follows:

the utility model provides a there is not transient interruption switching circuit for portable equipment, includes the load, and this circuit includes battery and socket XS1, diode D2, switch S1 and relay K1, the anodal series connection of battery relay K1 'S switch side is connected socket XS 1' S positive pole, the negative pole ground connection of battery, relay K1 'S switch side both ends are parallelly connected diode D2, the directional socket of diode D2, the anodal series connection switch S1 of socket connects the load, the nearly load side process of switch S1 the coil side of relay K1 is connected socket XS 1' S negative pole.

As a further optimization of the present solution, a diode D1 is connected in parallel to the coil side of the relay K1, and the diode D1 only wants to load.

As a further optimization of the present solution, the socket XS1 is a four-core socket.

As a further optimization of the scheme, the diode D1 is a freewheeling diode, and the diode D2 is a low-voltage high-power diode.

As a further optimization of the scheme, the relay K1 is a normally closed relay.

The working principle and the beneficial effects of the invention are as follows:

the relay is selected to be a direct current relay; one low-voltage drop high-power diode D2 selects a low-voltage drop Schottky, and the working current is a high-power diode; a load main switch metal waterproof switch; the external power supply socket XS1 is a 4-core socket. The battery adopts a lithium battery. The equipment space is limited, the smaller the switching circuit volume is, the larger the battery space can be made, and the higher the requirement on the switching circuit is. The design meets the characteristics of small volume and low power consumption. And are designed specifically for portable devices with demanding space and battery power requirements.

When no external direct current power supply exists, the battery inside the equipment is adopted for supplying power, when an external power supply is plugged, the external power supply is automatically switched to supply power, and uninterrupted switching can be realized; when an external power supply is used for supplying power, if the external power supply is suddenly powered off, the internal battery is automatically switched to supply power, and uninterrupted switching is realized; when the equipment does not work, the external power supply is plugged in, and the external power supply can charge the battery in the equipment.

Drawings

The invention is described in further detail below with reference to the drawings and the detailed description.

Fig. 1 is a schematic circuit diagram of the present solution.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.

The circuit comprises a storage battery, a socket XS1, a diode D2, a switch S1 and a relay K1, wherein the positive electrode of the storage battery is connected with the positive electrode of the socket XS1 in series at the switch side of the relay K1, the negative electrode of the storage battery is grounded, the two ends of the switch side of the relay K1 are connected with the diode D2 in parallel, the diode D2 points to the socket, the positive electrode of the socket is connected with the switch S1 in series at the switch S1, and the near load side of the switch S1 is connected with the negative electrode of the socket XS1 through the coil side of the relay K1. The coil side of the relay K1 is connected with a diode D1 in parallel, and the diode D1 only wants to load. The socket XS1 is a four-core socket. The diode D1 is a freewheeling diode, and the diode D2 is a low-voltage high-power diode. The relay K1 is a normally closed relay.

The relay is selected to be a direct current relay; one low-voltage drop high-power diode D2 selects a low-voltage drop Schottky, and the working current is a high-power diode; a metal waterproof switch of a load main switch; the external power supply socket XS1 is a 4-core socket. The battery adopts a lithium battery. The equipment space is limited, the smaller the volume of the switching circuit is, the larger the battery space can be made, and the higher the requirement on the switching circuit is. The design meets the characteristics of small volume and low power consumption. And are designed specifically for portable devices with demanding space and battery power requirements.

The working principle is as follows:

in case 1, when the load master switch S1 is not closed, the device is in an off state, when an external plug is inserted and the lithium battery charger is powered up, the switching circuit is in a charging state (the charger output goes to the lithium battery via XS1, K1).

In case 2, when the load master switch S1 is closed, if no external power is supplied to the socket XS1, the internal lithium battery-powered lithium battery supplies power to the load through the voltage supply lines K1 and S1;

in case 3, if the plug is plugged into the socket XS1 for external power supply, the external power supply mode is switched to (the charger outputs power to the load through XS2 and S1, the lithium battery supplies power to the load through the relay K1, so that the relay operates, and K1 is disconnected.

When the external power supply XS1 is suddenly cut off, the battery module supplies power to the auxiliary load through the D2 and the S1, the relay stops working, the K1 is in a closed state, the current returns to the battery, the K1 and the S1 to supply power to the load, and in the whole process, the power supply cannot be cut off, so that the function of uninterrupted switching is realized. And when the battery works, the battery has extra power consumption only when passing through the diode instantly, and after the relay is closed, the whole circuit has no extra element to consume power, so that the utilization rate of the battery reaches the highest.

The circuit is simple in principle, few in elements, high in efficiency, uninterrupted switching of functions is achieved, the design of a direct-current uninterrupted switching mode is achieved through cooperation of an electric appliance and a diode, the design mode of battery power supply and a charging circuit is uninterruptedly switched (power supply during working and charging during non-working), and the circuit is designed on an external power supply port (four cores).

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described apparatus/terminal device embodiments are merely illustrative, and for example, a module or a unit may be divided into only one type of logic function, and another division manner may be provided in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a there is not instantaneous disconnected switching circuit for portable equipment, includes the load, its characterized in that, this circuit includes battery and socket XS1, diode D2, switch S1 and relay K1, the positive pole of battery is established ties relay K1 ' S switch side is connected socket XS1 ' S positive pole, the negative pole ground connection of battery, relay K1 ' S switch side both ends are parallelly connected diode D2, diode D2 points to the socket, the positive pole series switch S1 of socket connects the load, the nearly load side process of switch S1 relay K1 ' S coil side is connected socket XS1 ' S negative pole.

2. The hitless switching circuit for a portable device according to claim 1, wherein a diode D1 is connected in parallel to a coil side of the relay K1, and the diode D1 is only intended to be loaded.

3. A hitless switching circuit for a portable device according to claim 2, wherein said socket XS1 is a quad socket.

4. The hitless switching circuit for a portable device according to claim 2, wherein the diode D1 is a freewheeling diode and the diode D2 is a low-voltage high-power diode.

5. A hitless switching circuit for a portable device according to claim 2, wherein the relay K1 is a normally closed relay.

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