CN220306966U

CN220306966U - Circuit board power supply circuit and charging box

Info

Publication number: CN220306966U
Application number: CN202320818892.0U
Authority: CN
Inventors: 沈超; 廖嘉泓
Original assignee: Wuxi Bestway Technology Development Co ltd
Current assignee: Wuxi Bestway Technology Development Co ltd
Priority date: 2023-01-06
Filing date: 2023-04-12
Publication date: 2024-01-05
Anticipated expiration: 2033-04-12

Abstract

The utility model provides a circuit board power supply circuit and a charging box, comprising: the circuit board battery circuit, the decoy circuit, the step-down circuit, MOS pipe U27 is connected with relay K6 and relay K7, MOS pipe U5 is connected with relay K6 and relay K7, relay K6 and relay K7 are connected with chip U3, relay K6 and relay K7 are parallelly connected with chip U26, chip U3 one end is connected with treasured power that charges, chip U3 voltage output end is connected with chip U26. The circuit board battery supplies power to the relay on the control decoy chip U3 in the switch circuit, the interphone is charged when the power is taken to the charger, and the relay which outputs the power after the voltage is reduced by the DCDC to maintain the control decoy chip works normally when the power is taken to the charger, so that the circuit board battery and the charger supply power to the circuit board together, and the problem that the power consumption of the circuit board is high and the battery energy is insufficient is solved.

Description

Circuit board power supply circuit and charging box

Technical Field

The utility model relates to the technical field of charger, in particular to a circuit board power supply circuit and a charging box.

Background

Various electronic devices are popular in life, so that various use scenes are generated, and the charging requirements of the electronic devices are diversified.

The integrated circuit board in the electronic equipment is mainly powered by the configured circuit board battery or by an external power supply, but due to scene limitation, such as outdoors, when no external power supply can be accessed, the power supply can only be powered by the circuit board battery; in addition, the circuit board battery for supplying power to the circuit board has smaller capacity due to the limitation of space in the device.

Therefore, finding a suitable circuit board power supply mode is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above-mentioned shortcomings in the prior art, an object of the present utility model is to provide a circuit board power supply circuit and a charging box, which can solve the problem of insufficient battery energy due to large power consumption of the circuit board by means of borrowing electricity to a charger in the charging box.

In order to achieve the above object, the present utility model provides a circuit board power supply circuit comprising:

further, the circuit board battery circuit further comprises an interface J1 and a diode D6, wherein the interface J1 is connected with a grid electrode of the MOS tube U27 and a source electrode of the MOS tube U5 respectively, the circuit board battery circuit further comprises a driving resistor R25 of the MOS tube U27, a drain electrode of the MOS tube U27 is connected with a negative electrode of the relay K6 and a negative electrode of the relay K7 respectively, a drain electrode of the MOS tube U5 is connected with a positive electrode of the diode D6, and a negative electrode of the diode D6 is connected with a positive electrode of the relay K6 and a positive electrode of the relay K7 respectively.

Further, the device also comprises an interface J4, two common pins of the relay K6 are respectively connected with the chip U3, two common pins of the relay K7 are connected with the chip U3, two normally open pins of the relay K6 are respectively connected with a DM signal pin and a DP signal pin of the interface J4, and two normally open pins of the relay K7 are respectively connected with a CC1 signal pin and a CC2 signal pin of the interface J4.

Further, the decoy circuit further comprises a MOS tube U4, and a source electrode of the MOS tube U4 is connected with the power taking end.

Further, the positive electrode of the relay K6 and the positive electrode of the relay K7 are respectively connected with the voltage output end of the chip U26.

Further, the grid electrode of the MOS tube U5 is connected with a charger.

Further, the chip U3 is HUSB238, the chip U26 is MT2492, and the relay K6 and the relay K7 are QY4078.

Further, the MOS tube U27 is an NMOS tube, the MOS tube U5 is a PMOS tube, and the MOS tube U4 is a PMOS tube.

In a second aspect, the present utility model provides a charging box, including a circuit board power supply circuit as described above, the charging box further including: the box, precious, the load charge, the box is equipped with the first storage tank that is used for holding precious, the box is equipped with the second storage tank that is used for holding the load, precious and the load charge are connected through above-mentioned circuit board power supply circuit electricity.

Further, the load is an intercom.

The circuit board power supply circuit and the charging box provided by the utility model have the following beneficial effects: the circuit board battery supplies power to the relay on the control decoy chip U3 in the switch circuit, the interphone is charged when the power is taken to the charger, and the relay which outputs the power after the voltage is reduced by the DCDC to maintain the control decoy chip works normally when the power is taken to the charger, so that the circuit board battery and the charger supply power to the circuit board together, and the problem that the power consumption of the circuit board is high and the battery energy is insufficient is solved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a circuit board for supplying power in an embodiment;

FIG. 2 is a schematic diagram of a step-down circuit according to an embodiment;

FIG. 3 is a schematic circuit diagram of a circuit board battery interface J1 according to an embodiment;

FIG. 4 is a schematic circuit diagram of a charger interface J4 according to an embodiment;

fig. 5 is a schematic structural diagram of a charging box in an embodiment.

Reference numerals:

1. a case; 2. the charging device comprises a charging device, a charging device 21 and a first accommodating groove; 31. and a second accommodating groove.

Detailed Description

In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It is noted that when an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" is two or more, unless explicitly defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the scope of the present disclosure, since any structural modifications, proportional changes, or dimensional adjustments made by those skilled in the art should not be made in the present disclosure without affecting the efficacy or achievement of the present disclosure.

The integrated circuit board in the electronic equipment is mainly powered by the configured circuit board battery in the overlooking mode or by an external power supply, but due to the limitation of scenes, such as outdoors, when the external power supply is not accessible, the power supply can only be powered by the circuit board battery; in addition, the circuit board battery for supplying power to the circuit board has smaller capacity due to the limitation of space in the device.

In addition, under the scene of outdoor operation of team, electronic equipment is more among the team personnel, and the removal demand of charging is great, needs to be equipped with a plurality of treasures that charge. In the process of going out to prepare the charging device, if the charging device is independently prepared and charged, the steps are complicated, and the charging device is inconvenient to manage. Therefore, this application provides a charging box, and this charging box bottom is provided with the circuit that charges for a plurality of treasures that charge, only needs to put into respectively with a plurality of treasures that charge the slot that matches with the treasures that charges, after charging box switch on external power source, can charge for a plurality of treasures that charge simultaneously.

In addition, still set up the equipment slot position that waits to charge in the charging box, will wait to charge equipment and put into the equipment slot position that waits to charge of looks adaptation, can treat the equipment that charges through the treasured that charges discharges, need not other connecting wires. The utility model provides a wait battery charging outfit uses the intercom as the example, and when field operation, the cell-phone communication is not good, can use the intercom to communicate, consequently, set up the precious discharge circuit of charging in the charging box and charge for the intercom, in addition, when inserting external power source, external power source charges for a plurality of treasures of charging and a plurality of intercom simultaneously.

Notably, this application has set up the precious charge-discharge circuit of charging and has charged for the intercom when solving the inconvenient, communication inconvenience of a plurality of treasured charge management of charging, communication equipment (like the intercom) charge management inconvenient problem, and it is ingenious in addition to borrow the electricity to charge treasured and solve the circuit board power consumption big in order to compensate the problem that circuit board battery capacity is little.

Example 1

The embodiment provides a charging box, including circuit board power supply circuit as above, the charging box still includes: the box 1, precious 2, the load charge, the box is equipped with the first storage tank 21 that is used for holding precious, the box is equipped with the second storage tank 31 that is used for holding the load, precious and the load charge are through above-mentioned circuit board power supply circuit electricity connection.

Further, the load is an intercom.

It should be noted that the circuit board power supply circuit is integrated with the bottom of the charging box.

The problem to be solved in this embodiment is, referring to fig. 5, that 16 first accommodating grooves 21 for accommodating the charging devices 2 are provided, and 8 second accommodating grooves 31 for accommodating the interphones are provided, wherein 8 charging devices 2 are provided with charging device charging and discharging circuits for charging 8 interphones respectively.

Of course, the number of the charger and the interphone is not limited to the number exemplified in the present embodiment.

The problem to be solved by the embodiment is that under the outdoor operation scene of a team, the charging requirement for electronic equipment such as mobile phones and flat plates is larger, and the communication of outdoor or outdoor mobile phones is poor, so that proper communication equipment is needed, and the charging requirement for the communication equipment under the outdoor scene is simple and convenient.

According to the utility model, a plurality of interphones are arranged in the charging box to serve as communication equipment, so that communication among teams can be carried out in an outdoor scene.

The conventional solution is that a plurality of charging devices are generally carried, the charging devices can charge the mobile phone through charging wires, and in addition, when the interphone needs to be charged, the charging devices need to be taken out to be connected with the charging wires and then charge the interphone; particularly, in a team operation scene, when a plurality of interphones are required to be charged respectively by a plurality of charging devices, the charging steps of the interphones are more remarkable in complexity and encumbrance. In addition, the charger baby is usually charged in advance before going out, but for charging a plurality of charger baby, each charger baby is usually required to be charged after being connected to a circuit, and the charging mode of a plurality of charger baby is also particularly complicated and cumbersome.

According to the scheme provided by the embodiment, a plurality of charging treasures are arranged in the charging box, and a charging circuit of the charging treasures is arranged at the bottom of the charging box, so that the charging treasures are convenient to manage and charge; in addition, still be provided with a plurality of second storage tanks that are used for the holding intercom to charge in the charging box to set up the treasured that charges and discharge the circuit and charge for the intercom, the team can also use the intercom to communicate under the poor condition of outdoor communication, and more make things convenient for communicating between the team. When the interphone is idle, the interphone is directly placed into the corresponding slot in the charging box, so that the interphone can be charged through the charging device discharging circuit, the charging is convenient and quick, and the charging device and the interphone are convenient to manage.

Example two

Referring to fig. 1 and 2, the present embodiment provides a circuit board power supply circuit, which includes: a circuit board battery circuit, a decoy circuit, and a step-down circuit; the circuit board battery circuit includes: relay K6, relay K7, MOS pipe U27, MOS pipe U5; the spoofing circuit includes: chip U3, treasured power that charges; the step-down circuit includes: chip U26; MOS pipe U27 is connected with relay K6 and relay K7, and MOS pipe U5 is connected with relay K6 and relay K7, and relay K6 and relay K7 are connected with chip U3, and relay K6 and relay K7 are parallelly connected to be connected with chip U26, and chip U3 one end is connected with treasured power that charges, and chip U3 voltage output end is connected with chip U26.

The problem to be solved by this embodiment is that the battery capacity for powering the circuit board is generally small, and the insufficient battery power for powering the circuit board will affect the normal operation of the device. For example, in an outdoor scenario, when no external power is connected, a circuit board battery is required to supply power to the circuit board, so that the power consumption is high.

According to the scheme provided by the embodiment, in order to solve the problem of inconvenient management of a plurality of charging treasures, a charging box is designed; further, in order to solve the problem of inconvenient outdoor communication, an interphone is arranged in the charging box so as to communicate; further, in order to solve the problem of inconvenient charging of a plurality of outdoor interphones, a charging treasured charging and discharging circuit is arranged in the charging box so that the charging treasures charge the interphones; further, in order to maintain the normal operation of the circuit board in the charging box, under the condition that no external power is connected, the circuit board battery is required to supply power to the circuit board, in a relatively limited space of the charging box, the capacity of the circuit board battery is generally smaller, and the problem of high power consumption of the circuit board needs to be solved.

The circuit board battery supplies power to the relay on the control decoy chip U3 in the switch circuit, the interphone is charged when the power is taken to the charger, and the relay which outputs the power after the voltage is reduced by the DCDC to maintain the control decoy chip works normally when the power is taken to the charger, so that the circuit board battery and the charger supply power to the circuit board together, and the problem that the power consumption of the circuit board is high and the battery energy is insufficient is solved.

Example III

The embodiment provides a circuit board power supply circuit, referring to fig. 3, the circuit board battery circuit further includes an interface J1 and a diode D6, the interface J1 is connected with a gate of a MOS tube U27 and a source of a MOS tube U5 respectively, and further includes a driving resistor R25 of the MOS tube U27, a drain of the MOS tube U27 is connected with a negative electrode of a relay K6 and a negative electrode of a relay K7 respectively, a drain of the MOS tube U5 is connected with a positive electrode of the diode D6, and a negative electrode of the diode D6 is connected with a positive electrode of the relay K6 and a positive electrode of the relay K7 respectively.

It should be noted that, the 5 th pin of the interface J1 is connected with the source electrode of the MOS tube U5, the 5 th pin of the interface J1 is also connected with the gate electrode of the MOS tube U27, the source electrode of the MOS tube U27 and the gate electrode of the MOS tube U27 are connected with the driving resistor R25, the interface J1 is a circuit board battery interface, when a receiving signal outputs 5V voltage through the interface J1, the 5 th pin of the relay K6 and the relay K7 are conducted through the MOS tube U27, the MOS tube U5 and the diode D6, and the relay K6 is attracted to the normally open pin, namely the 5 th pin of the relay K6 and the 4 th pin of the relay K6; the relay K7 is attracted to the normally open pin, namely the 5 th pin of the relay K7 and the 4 th pin of the relay K6; the signal pins connected to the relays K6 and K7 send signals to make the charger output voltage according to the corresponding protocol. The 2 nd pin of the relay K6 is connected with the 3 rd pin of the chip U3, the 7 th pin of the relay K6 is connected with the 2 nd pin of the chip U3, the 2 nd pin of the relay K7 is connected with the 4 th pin of the chip U3, and the 7 th pin of the relay K7 is connected with the 5 th pin of the chip U3.

Further, referring to fig. 4, the circuit further includes an interface J4, two common pins of a relay K6 are connected with the chip U3, two common pins of the relay K7 are connected with the chip U3, two normally open pins of the relay K6 are connected with DM signal pins and DP signal pins of the interface J4, and two normally open pins of the relay K7 are connected with CC1 signal pins and CC2 signal pins of the interface J4, respectively.

It should be noted that, the source electrode of the MOS tube U4 is connected with the normally-closed pin of the relay K1 at the power-taking end, that is, the 4 th pin of the relay K1, the gate electrode of the MOS tube U4 is connected with the first end of the resistor R10, the drain electrode of the MOS tube U4 is connected with the second end of the resistor R10, the first end of the resistor R10 is connected with the resistor R11, the resistor R11 is connected with the 10 th pin of the chip U3, the first end of the resistor R18 is connected with the drain electrode of the MOS tube U4, the second end of the resistor R18 is connected with the input voltage end of the chip U26, and the chip U26 is an MT2492DCDC buck converter; relay K6 and relay K7 switch signal make the treasured that charges discharge through decoy chip U3, MOS pipe U4 is as the switch control treasured that charges that switches on or cut off that discharges, and the 12V that the treasured that charges was released is reduced to 5V through step-down chip U26 and is kept relay K6 and relay K7 normal work, and the voltage output end of step-down chip U26 is connected with relay K6 positive pole, and the voltage output end of step-down chip U26 is connected with relay 7 positive pole, and the voltage output end of step-down chip U26 is connected with the negative pole of diode D6 simultaneously.

Further, the grid electrode of the MOS tube U5 is connected with a charger.

It is noted that, referring to fig. 1, after the resistor R26 and the resistor R27 are connected in parallel, the resistor R26 is connected to the gate of the MOS transistor U5, one end of the resistor R26 is grounded, one end of the resistor R27 is connected to the discharging line tpg_12v of the power source of the charger, after the decoy chip U3 discharges the power source of the charger, the discharging line tpg_12v of the power source of the charger outputs a high level to turn off the MOS transistor U5, in addition, the 5V output by the buck chip U26 is turned off by the backflow preventing diode D6, and the 5V output by the buck chip U26 maintains the positive electrode of the relay K6 and the positive electrode of the relay K7. At this time, the circuit board battery power supply maintains the negative electrode of the relay K5 and the negative electrode of the relay K7 through the MOS tube U27, and the circuit board battery power supply does not pass through the MOS tube U5, so that the circuit board battery and the charger can jointly maintain the closing of the relay K6 and the relay K7, and the chip U3 in the circuit board can work normally.

The power supply for the interphone is realized by discharging the charger through the decoy chip U3, and meanwhile, 12V is input into the voltage reduction chip U26 to output 5V by discharging the charger so as to maintain the normal operation of the relay K6 and the relay K7.

In addition, the second end of the resistor R18 is connected with a normally-closed pin of the relay K2, so that the charge pal is discharged to charge the interphone through the decoy chip U3. The relay K2 is used for switching a charging circuit of the interphone by the charger or a charging circuit of the interphone by an external power supply.

The chip U3 is HUSB238, the chip U26 is MT2492, and the relay K6 and the relay K7 are QY4078.

The MOS tube U27 is an NMOS tube, the MOS tube U5 is a PMOS tube, and the MOS tube U4 is a PMOS tube.

According to the scheme provided by the embodiment, the power is skillfully borrowed to the charger so that the circuit board battery and the charger supply power for the circuit board together, and the problem of high power consumption of the circuit board is solved.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. The circuit board power supply circuit is characterized by comprising: a circuit board battery circuit, a decoy circuit, and a step-down circuit;

the circuit board battery circuit includes: relay K6, relay K7, MOS pipe U27, MOS pipe U5;

the spoofing circuit includes: chip U3, treasured power that charges;

the step-down circuit includes: chip U26;

MOS pipe U27 is connected with relay K6 and relay K7, and MOS pipe U5 is connected with relay K6 and relay K7, and relay K6 and relay K7 are connected with chip U3, and relay K6 and relay K7 are parallelly connected to be connected with chip U26, and chip U3 one end is connected with treasured power that charges, and chip U3 voltage output end is connected with chip U26.

2. The circuit board power supply circuit according to claim 1, wherein the circuit board battery circuit further comprises an interface J1 and a diode D6, the interface J1 is connected with a grid electrode of the MOS tube U27 and a source electrode of the MOS tube U5 respectively, the circuit board power supply circuit further comprises a MOS tube U27 driving resistor R25, a drain electrode of the MOS tube U27 is connected with a negative electrode of the relay K6 and a negative electrode of the relay K7 respectively, a drain electrode of the MOS tube U5 is connected with a positive electrode of the diode D6, and a negative electrode of the diode D6 is connected with a positive electrode of the relay K6 and a positive electrode of the relay K7 respectively.

3. The circuit board power supply circuit according to claim 2, further comprising an interface J4, wherein two common pins of the relay K6 are respectively connected with the chip U3, two common pins of the relay K7 are connected with the chip U3, two normally open pins of the relay K6 are respectively connected with a DM signal pin and a DP signal pin of the interface J4, and two normally open pins of the relay K7 are respectively connected with a CC1 signal pin and a CC2 signal pin of the interface J4.

4. The circuit board power supply circuit of claim 3, wherein the decoy circuit further comprises a MOS tube U4, and a source of the MOS tube U4 is connected to the power supply terminal.

5. The circuit board power supply circuit according to claim 2, wherein the positive electrode of the relay K6 and the positive electrode of the relay K7 are respectively connected with the voltage output terminal of the chip U26.

6. The circuit board power supply circuit according to claim 2, wherein the grid electrode of the MOS tube U5 is connected with a charger.

7. The circuit board power supply circuit of claim 6, wherein the chip U3 is a hub 238, the chip U26 is an MT2492, and the relay K6 and the relay K7 are QY4078.

8. The circuit board power supply circuit of claim 7, wherein the MOS transistor U27 is an NMOS transistor, the MOS transistor U5 is a PMOS transistor, and the MOS transistor U4 is a PMOS transistor.

9. A charging box comprising the circuit board power supply circuit of any one of claims 1 to 8, the charging box further comprising: the box, precious, the load charge, the box is equipped with the first storage tank that is used for holding precious, the box is equipped with the second storage tank that is used for holding the load, precious and the load charge are connected through above-mentioned circuit board power supply circuit electricity.

10. The charging box of claim 9, wherein the load is an intercom.