CN222980969U

CN222980969U - Power strip with battery charging function

Info

Publication number: CN222980969U
Application number: CN202420851089.1U
Authority: CN
Inventors: 林俊鹏
Original assignee: Shenzhen Jingzhe Technology Co ltd
Current assignee: Shenzhen Jingzhe Technology Co ltd
Priority date: 2024-04-23
Filing date: 2024-04-23
Publication date: 2025-06-13
Anticipated expiration: 2034-04-23

Abstract

The utility model discloses a power strip with a battery charging function, which comprises an upper shell and a plugboard base, wherein the upper shell is arranged on the plugboard base, the upper shell and the plugboard base form a strip inner cavity, a power wire is inserted into the strip inner cavity from one end and is connected with metal sheets in the strip inner cavity, the upper shell is provided with three jacks, when a plug is inserted into the three jacks, the metal sheets of the plug are in contact with the metal sheets in the strip inner cavity, a control board and a battery charging groove are arranged in the strip inner cavity, and an opening is arranged at a position corresponding to the battery charging groove of the upper shell so as to facilitate the charging of a rechargeable battery into the battery charging groove or the discharging of the rechargeable battery from the battery charging groove. The power strip with the battery charging function has the advantages of being capable of charging rechargeable batteries on the basis of the power strip function, being suitable for charging different types of rechargeable batteries and the like.

Description

Power strip with battery charging function

Technical Field

The utility model relates to a power strip, in particular to a power strip with a battery charging function.

Background

The socket is a multi-position socket with wires, also called a patch board or a socket plug, and is a school name wire lengthening assembly or an extension line socket. The power strip refers to a movable multi-position socket with a power line and a plug. Can be connected with more than one power plug, thereby saving space and circuits.

The rechargeable battery is a chargeable battery with limited charging times and is matched with a charger for use. The rechargeable battery has the advantages of economy, environmental protection, sufficient electric quantity and repeated charging, and is suitable for high-power and long-time electric appliances (such as walkman, electric toys and the like). The rechargeable battery includes several kinds of Ni-Cd battery, ni-MH battery, li-ion battery, lead accumulator and Fe-Li battery lamp.

With the development of technology, people have an increasing demand for electric energy, and many devices in life need to use electricity. The manner in which the electrical energy is used is also varied. The current power strip has only a single function, such as single mains supply 220V output or USB-5V output, and people can feel very inconvenient to use. Because of the diversity of electrical devices, people may need a variety of power devices to meet the electrical demands.

Currently, many rechargeable batteries are configured with a specific charging dock. The charging seat is matched with a rechargeable battery, is generally not suitable for charging rechargeable batteries of other brands, and has poor universality.

Disclosure of utility model

The utility model provides a power strip with a battery charging function, which can charge rechargeable batteries on the basis of the strip function and is suitable for charging different types of rechargeable batteries.

The utility model adopts the following technical scheme for solving the technical problems.

The utility model relates to a power strip with a battery charging function, which comprises an upper shell 1 and a plugboard base, wherein the upper shell is covered on the plugboard base, and the upper shell and the plugboard base form a strip inner cavity;

The upper shell is provided with three jacks 2, and when a plug is inserted into the three jacks, the plug is mutually and electrically connected with the socket in the inner cavity of the power strip;

A control board and a battery charging groove 5 are arranged in the inner cavity of the power strip; the upper shell is provided with an opening at a position corresponding to the battery charging groove, so that the rechargeable battery can be conveniently placed in the battery charging groove or taken out from the battery charging groove.

The power strip with the battery charging function is also characterized in that:

Further, an outer cover capable of closing the opening is arranged on the upper shell.

Further, the outer cover is hinged to the upper case such that the outer cover can be turned over to open or close the battery charging slot.

Further, the control board comprises a microcontroller MCU, a power supply circuit, a reference voltage circuit, a battery constant current discharge circuit, a battery charging indicator lamp circuit, a mode key and indicator lamp circuit, a battery charging circuit and a plurality of sockets.

Further, a mode key 4 and a mode indication lamp hole 3 are arranged on the upper shell.

Further, a charging indicator hole 6 is formed in one side of the battery charging groove 5.

Further, the microcontroller MCU is JZIC _sop16.

Further, the power supply circuit comprises a voltage adjusting chip U9, a switching power supply chip U11, a rectifier bridge D1, resistors R1-R9, capacitors C1-C6, a capacitor C8, a transformer U8 and diodes D2-D5.

Further, the battery charging circuit comprises a first charging circuit, a second charging circuit, a third charging circuit and a fourth charging circuit, wherein the first charging circuit comprises a battery charging groove BT1 AA, resistors R14-R16 and a triode Q1, the second charging circuit comprises a battery charging groove BT2AA, resistors R17-R19 and a triode Q2, the third charging circuit comprises a battery charging groove BT3 AA, resistors R20-R22 and a triode Q3, and the fourth charging circuit comprises a battery charging groove BT4AA, resistors R23-R25 and a triode Q4.

The battery constant-current discharge circuit comprises a first constant-current discharge circuit and a second constant-current discharge circuit, wherein the first constant-current discharge circuit comprises an operational amplifier U3, resistors R30-R35, capacitors C13-C14 and triodes Q5-Q6, and the second constant-current discharge circuit comprises an operational amplifier U10, resistors R36-R41, capacitors C15-C16 and triodes Q7-Q8.

Compared with the prior art, the utility model has the beneficial effects that:

The utility model discloses a power strip with a battery charging function, which comprises an upper shell and a plugboard base, wherein the upper shell is arranged on the plugboard base, the upper shell and the plugboard base form a strip inner cavity, a power wire is inserted into the strip inner cavity from one end and is connected with metal sheets in the strip inner cavity, the upper shell is provided with three jacks, when a plug is inserted into the three jacks, the metal sheets of the plug are in contact with the metal sheets in the strip inner cavity, a control board and a battery charging groove are arranged in the strip inner cavity, and an opening is arranged at a position corresponding to the battery charging groove of the upper shell so as to facilitate the charging of a rechargeable battery into the battery charging groove or the discharging of the rechargeable battery from the battery charging groove.

The power strip with the battery charging function enables a user to realize multiple power outputs by using power through one device, can realize 220V output and USB-5V output on one power control device, can provide the optimal storage environment for nickel-hydrogen batteries and nickel-cadmium batteries and can provide the optimal storage environment for the nickel-hydrogen nickel-cadmium batteries, and is suitable for various different brands of rechargeable batteries.

The power strip with the battery charging function has the advantages of being capable of charging rechargeable batteries on the basis of the power strip function, being suitable for charging different types of rechargeable batteries and the like.

Drawings

Fig. 1 is a front view of a power strip with battery charging function according to the present utility model.

Fig. 2 is a circuit frame diagram of a power strip with a battery charging function according to the present utility model.

Fig. 3 is a circuit diagram of a microcontroller MCU of a power strip with battery charging function according to the present utility model.

Fig. 4 is a circuit diagram of a power circuit of a power strip with a battery charging function according to the present utility model.

Fig. 5 is a circuit diagram of a battery charging circuit of a power strip with battery charging function according to the present utility model.

Fig. 6 is a circuit diagram of a battery constant current discharging circuit of a power strip with a battery charging function.

Fig. 7 is a circuit diagram of a reference voltage circuit of a power strip with battery charging function according to the present utility model.

Fig. 8 is a circuit diagram of a mode key and indicator light circuit of a power strip with battery charging function according to the present utility model.

Fig. 9 is a circuit diagram of a battery charge indicator light circuit with battery charging function according to the present utility model.

Fig. 10 is a schematic diagram of a socket of a power strip with a battery charging function according to the present utility model.

The utility model is further described below by means of specific embodiments in connection with the accompanying drawings.

Detailed Description

Referring to fig. 1-10, the power strip with the battery charging function comprises an upper shell 1 and a plugboard base, wherein the upper shell is covered on the plugboard base, and the upper shell and the plugboard base form a strip inner cavity;

Referring to fig. 1, the power strip with a battery charging function of the present utility model includes a plurality of sockets with 220V output function, a plurality of AA/AAA battery charging slots, and a plurality of USB charging interfaces. The socket with the 220V output function comprises four delta sockets, and can be used for a user to supply power by using a 220V power supply product. The USB charging interface mainly comprises two USB-A female seats, and can be used for A user to supply power for products with low-power 5V input voltage such as mobile phones, earphones, charger and the like.

The AA/AAA battery charging groove can be used for a user to charge a 1.2V nickel-hydrogen or nickel-cadmium battery, and the battery can be kept at a 1.2V rated voltage point, so that the service life of the battery is protected.

The power strip with the battery charging function integrates the function of the nickel-hydrogen nickel-cadmium battery charging box, and can charge and store nickel-hydrogen and nickel-cadmium batteries in the battery groove. Meanwhile, the power strip has the functions of 200V output and USB-5V output of a common power strip.

In specific implementation, an outer cover capable of sealing the opening is arranged on the upper shell.

In specific implementation, the outer cover is hinged with the upper shell, so that the outer cover can be turned over to open or close the battery charging groove.

Under normal conditions, the outer cover covers the battery charging groove, so that dust or foreign matters are prevented from entering the battery charging groove, and normal charging is prevented from being influenced. When the rechargeable battery needs to be taken out or put in, the outer cover is opened.

When the battery charging control device is specifically implemented, the control board comprises a microcontroller MCU, a power supply circuit, a reference voltage circuit, a battery constant current discharging circuit, a battery charging indicator lamp circuit, a mode key and indicator lamp circuit, a battery charging circuit and a plurality of sockets.

Fig. 2 is a frame diagram of the control board, and the connection relationship between the circuit modules is shown in fig. 2.

In specific implementation, the upper shell is provided with a mode key 4 and a mode indicating lamp hole 3.

The upper shell is provided with a touch button as a mode button 4. The mode key is arranged corresponding to the mode key and a pressing switch SW1 of the indicator light circuit, and the pressing switch SW1 can be turned on or turned off. The LED9 corresponds to the mode indication light hole, so that whether the LED9 is lighted or not can be conveniently observed.

In specific implementation, a charging indicator hole 6 is formed on one side of the battery charging groove 5.

In specific implementation, the microcontroller MCU is JZIC _SOp16.

Fig. 3 is a circuit diagram of the micro controller MCU, and the connection relationship between the components is shown in fig. 3. The microcontroller circuit includes a chip U1 and a capacitor C7. The model of the MCU chip U1 is JZ8P2615-SOP16 (the manufacturer is tin-free crystal philosophy science and technology Co., ltd., selling website: http:// www.wxjzkj.com/about_product/MCUdppj053. Html).

In specific implementation, the power supply circuit comprises a voltage regulation chip U9, a switching power supply chip U11, a rectifier bridge D1, resistors R1-R9, capacitors C1-C6, a capacitor C8, a transformer U8 and diodes D2-D5.

Fig. 4 is a circuit diagram of a power supply circuit, and the connection relationship between the components is shown in fig. 4. The power supply circuit mainly controls the power supply for the MCU and is used as the electric energy source for charging the battery. AC220V is converted into DC220V through a rectifier bridge, and then the DC220V is reduced through a transformer to obtain power supply voltages of DC1+2V and DC+2V. Wherein DC+12V is regulated by LDO-HT7550 to 5V to supply power to MCU. And dc+2v will be used for battery charging.

The voltage regulation chip U9 is of the type HT7550-1. The HT75XX series is a three-port low-power high-voltage regulator employing COMS technology, allowing an input voltage of up to 24V, capable of outputting several fixed voltages from 3.0V to 5.0V. The COMS technique ensures low voltage drop and low quiescent current. HT7550 can also achieve variable voltage and current through the peripheral components. The highest input voltage of HT7550-1 can reach 30V, and the output voltage range is 1.5V-12.0V. HT7550-1 has the characteristics of high-precision output voltage, extremely low supply current, extremely low drop voltage and the like.

The type of the switching power supply chip U11 is U6217. In order to meet the stringent average efficiency and standby power consumption requirements, the switching power supply chip U6217 adopts a multi-mode control technology combining amplitude modulation control (AM) and frequency modulation control (FM). Near full load output, the system operates in a frequency modulated mode of operation. The LED illumination driving chip U6217 adopts a multi-mode control technology combining frequency modulation control and amplitude modulation control in a constant-voltage output mode, and simultaneously a current source flows out of a CS pin to regulate CS voltage signals. With the technology, the U6217 can realize the whole-process abnormal-sound-free operation from full load to no-load. The drive circuit of the soft drive function designed by U6217 optimizes the EMI performance of the system. The inside of the chip is designed with a Gate high-level 16V clamping circuit to prevent Gate damage during high VDD input.

In specific implementation, the battery charging circuit comprises a first charging circuit, a second charging circuit, a third charging circuit and a fourth charging circuit, wherein the first charging circuit comprises a battery charging groove BT1 AA, resistors R14-R16 and a triode Q1, the second charging circuit comprises a battery charging groove BT2 AA, resistors R17-R19 and a triode Q2, the third charging circuit comprises a battery charging groove BT3 AA, resistors R20-R22 and a triode Q3, and the fourth charging circuit comprises a battery charging groove BT4 AA, resistors R23-R25 and a triode Q4.

Fig. 5 is a circuit diagram of a battery charging circuit, and the connection relationship between the components is shown in fig. 5. When the user does not put in the battery, the battery charging circuit is in an open state, and no current loop is generated. When the user puts in the battery and the MCU detects that the condition of charging is met, the MC is opened to the triode, so that the battery is charged. The battery is charged by the voltage of +2V output by the power circuit. The first charging circuit, the second charging circuit, the third charging circuit and the fourth charging circuit are all connected with the MCU pin 15 (BT 1), the pin 14 (BT 2), the pin 13 (BT 2) and the pin 12 (BT 4).

In specific implementation, the battery constant-current discharge circuit comprises a first constant-current discharge circuit and a second constant-current discharge circuit, wherein the first constant-current discharge circuit comprises an operational amplifier U3, resistors R30-R35, capacitors C13-C14 and triodes Q5-Q6, and the second constant-current discharge circuit comprises an operational amplifier U10, resistors R36-R41, capacitors C15-C16 and triodes Q7-Q8.

Fig. 6 is a circuit diagram of a battery constant current discharge circuit, and the connection relation among components is shown in fig. 6. The constant-current discharge circuit of the battery realizes that the current of the output current of the battery flowing through the triode transmitter 1R5 always keeps 300mA through operational amplifiers U3 and U10. When the voltage across the resistor 1R5 (also called sampling resistor, i.e. R31, R35, R37 and R41 in fig. 6) is greater than 300mA, the op-amp will output a low level, turning off the transistor. Otherwise, if the voltage is less than 300mA, the operational amplifier turns on the triode. The turn-off and turn-on are so fast that a constant current at 300mA output is achieved.

Fig. 7 is a circuit diagram of a reference voltage circuit, and the connection relationship between the components is shown in fig. 7. The reference voltage circuit comprises a voltage stabilizing chip U4, resistors R27-R29 and a capacitor C12. The voltage stabilizing chip U4 is a controllable precise voltage stabilizing source TL431. The reference voltage circuit is output by the TL431 reference chip with constant 0.459V, and the voltage is used for the constant-current discharging part of the battery, so that the constant-current is kept stable. The output voltage of TL431 can be set to any value in the range from 2.5V to 36V with two resistors. The typical dynamic impedance of the device is 0.2 Ω, which is used in place of a zener diode in many applications, such as digital voltmeters, op-amp circuits, adjustable voltage supplies, switching power supplies, etc. TL431 is a shunt voltage regulator integrated circuit. The power supply circuit has good performance and low price, so that the power supply circuit is widely applied to various power supply circuits.

Fig. 8 is a circuit diagram of a mode key and an indicator light circuit, and the connection relation between the components is shown in fig. 8. The mode key and indicator light circuit includes a key switch SW1, a resistor R26 and a light emitting diode LED9. The blue LED9 is turned on representing the battery in the storage mode, and the device charges/discharges the battery so that the battery is constantly at 1.2V. In this utility model, there is a key switch SW1, and pressing the key switch SW1 switches the battery charging/storing mode, and when the blue LED9 is turned on, it is in the storing mode, and vice versa. The mode key 4 is used for switching between a charging mode and a storage mode, wherein the battery is indicated by a red-green double-color lamp when in the charging mode, and a blue LED lamp is used for indicating when in the storage mode.

Fig. 9 is a circuit diagram of a battery charge indicator light circuit, and the connection relationship between the components is shown in fig. 9. The battery charging indicator lamp circuit comprises resistors R10-R13 and light emitting diodes LED 1-LED 8. The battery charge indicator light is used for reminding a user of whether the current state of the battery is in a charged state or a full state. 4 red and green double-color LEDs are charged to light red lamps and light green lamps corresponding to the charging condition of the battery charging grooves of each battery. The AA/AAA battery charging groove is used for placing batteries, and the structure can be used for placing nickel-hydrogen/nickel-cadmium batteries with AA and AAA specifications. The red light will flash when a 1.5V dry cell is placed and the charging is stopped, alerting the user.

Fig. 10 is a schematic circuit connection diagram of a socket, and 4 sockets U2 and U5 to U7 may be used to supply power to a commercial power product, and a user provides a power function of AC 220V. The 3 metal sheets of the socket are respectively connected with external power terminals LIN, LOUT and N of the power line.

In specific implementation, the power strip with the battery charging function comprises four AA/AAA battery slots, four red-green double-color LEDs (LEDs 1-8) and one blue LED (LED 9).

The power strip with the battery charging function enables a user to realize multiple power outputs by using power through one device, and can realize 220V output, USB-5V output, nickel-hydrogen battery and nickel-cadmium battery charging function on one power control device and provide the optimal storage environment of the nickel-hydrogen nickel-cadmium battery.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The power strip with the battery charging function is characterized by comprising an upper shell (1) and a plugboard base, wherein the upper shell is covered on the plugboard base, and the upper shell and the plugboard base form a strip inner cavity;

The upper shell is provided with three jacks (2), and when a plug is inserted into the three jacks, the plug is mutually and electrically connected with the socket in the inner cavity of the power strip;

The power strip comprises a power strip, a power strip and a power strip, wherein a control board and a battery charging groove (5) are arranged in an inner cavity of the power strip;

The control board comprises a battery charging circuit and a battery constant-current discharging circuit, wherein the battery charging circuit comprises a first charging circuit, a second charging circuit, a third charging circuit and a fourth charging circuit, the first charging circuit comprises a battery charging groove BT1 AA, resistors R14-R16 and a triode Q1, the second charging circuit comprises a battery charging groove BT2 AA, resistors R17-R19 and a triode Q2, the third charging circuit comprises a battery charging groove BT3 AA, resistors R20-R22 and a triode Q3, the fourth charging circuit comprises a battery charging groove BT4 AA, resistors R23-R25 and a triode Q4, the battery constant-current discharging circuit comprises a first constant-current discharging circuit and a second constant-current discharging circuit, the first constant-current discharging circuit comprises an operational amplifier U3, resistors R30-R35, capacitors C13-C14 and a triode Q6, and the second constant-current discharging circuit comprises an operational amplifier U10, resistors R36-C15-C16 and a triode Q8.

2. The power strip with battery charging function according to claim 1, wherein an outer cover capable of closing the opening is provided on the upper case.

3. The power strip with battery charging function according to claim 2, wherein the outer cover is hinged to the upper case such that the outer cover can be turned over to open or close the battery charging slot.

4. The power strip with battery charging function according to claim 1, wherein the control board comprises a microcontroller MCU, a power circuit, a reference voltage circuit, a battery constant current discharge circuit, a battery charge indicator light circuit, a mode key and indicator light circuit, a battery charging circuit and a plurality of sockets.

5. The power strip with the battery charging function according to claim 4, wherein a mode key (4) and a mode indicating lamp hole (3) are arranged on the upper shell.

6. The power strip with the battery charging function according to claim 4, wherein a charging indication lamp hole is formed in one side of the battery charging groove (5).

7. The power strip with battery charging function of claim 4, wherein the microcontroller MCU is JZIC _sop16.

8. The power strip with the battery charging function according to claim 4, wherein the power circuit comprises a voltage adjustment chip U9, a switching power chip U11, a rectifier bridge D1, resistors R1-R9, capacitors C1-C6, a capacitor C8, a transformer U8 and diodes D2-D5.