CN214626428U

CN214626428U - Charging device capable of displaying electric quantity percentage

Info

Publication number: CN214626428U
Application number: CN202120591794.9U
Authority: CN
Inventors: 张成君
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-11-05
Anticipated expiration: 2031-03-23

Abstract

The utility model discloses a show charging device of electric quantity percentage, including the power supply head that can link to each other with the feeder ear, can link to each other with hand-held device charge the head, connect in charge line between power supply head and the head that charges, with the signal line, the control unit and the display element of the first communication of charging, the control unit passing signal line acquires hand-held device's electric quantity percentage information from hand-held device in the memory, and control the display element shows electric quantity percentage information. Compared with the prior art, the utility model discloses the control unit is direct through the interface protocol access handheld device's of the head that charges memory, acquires the real-time electric quantity percentage information of handheld device from the address of predetermineeing of storage area to show on the display screen, need not to carry out the electric quantity calculation, the result is accurate, and the user of being convenient for knows current handheld device's electric quantity percentage from charging device's display element.

Description

Charging device capable of displaying electric quantity percentage

Technical Field

The utility model relates to a charging device especially relates to a can accurate charging device who shows handheld terminal electric quantity percentage.

Background

With the progress of science and technology, electronic products are increasingly being developed to be light, thin, short and small, wherein, handheld devices, such as tablet computers, notebook computers, smart phones, video players and other indispensable personal articles in daily life, all have sub-chargers and charging cables so as to charge and transmit data to the handheld devices. Especially, current intelligent handheld device consumes power soon, often needs to charge.

In order to facilitate the judgment of whether the current digital terminal equipment is in a charging state, the conventional charging device usually detects the current charging current and charging voltage in real time, so that the current charging speed and the current charging state are judged through the charging current and the charging voltage, however, the charging device can only be used for people to know the current charging speed and the charging state, whether the charging device is full of the current charging speed and the charging state is judged according to the charging current, the current electric quantity of the handheld device cannot be accurately judged, and the accuracy is poor.

Therefore, in the prior art CN201320246856, the current flow is detected by the current detection circuit to estimate the electric quantity required by the mobile phone, and then the information of the electric quantity required by the mobile phone is sent to the electric quantity display unit, so that people can judge the electric quantity required by the mobile phone through the electric quantity display unit, but the electric quantity required by the mobile phone is affected by different charge capacities of different mobile phones and calculation errors, and not only the calculation is complex, the requirement on the CPU in the charging device is high, but also the judgment accuracy is poor.

Therefore, there is a need for a charging device that can solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a show charging device of electric quantity percentage can directly acquire the current electric quantity percentage information of hand-held device and show on the display screen from hand-held device's memory, need not to carry out the electric quantity and calculate, and the result is accurate, and the user of being convenient for knows current hand-held device's electric quantity percentage directly perceivedly from charging device's display element.

In order to achieve the above object, the utility model discloses a show charging device of electric quantity percentage, including the power supply head that can link to each other with the feeder ear, can link to each other with handheld device charge the head, connect in charge circuit between power supply head and the head, with the signal line, the control unit and the display element of the first communication of charging, the control unit passes through the signal line and acquires handheld device's electric quantity percentage information from handheld device, and control the display element shows electric quantity percentage information.

Compared with the prior art, the utility model discloses the control unit is direct to visit handheld device's memory through the interface protocol of the head that charges, handheld device can real-time calculation self electric quantity and the storage at the preset address of memory, the internal storage of control unit has corresponding grabbing instruction, with in real time obtain the real-time electric quantity percentage information of handheld device from the preset address of memory, with show on the display screen, need not to carry out the electric quantity calculation, the result is accurate, and when charging, the mobile phone information that the user looked over most often is exactly electric quantity percentage information, directly with electric quantity percentage information display on charging device's display element, be convenient for the user directly perceived the electric quantity percentage of understanding current handheld device, high durability and convenient use, use experience is good.

Preferably, the signal line is connected between the charging head and the power supply head to form a communication loop, and the control unit is installed on the communication loop and detects the state of the power supply head to control the connection or disconnection of the communication loop. This scheme makes the control unit use the signal line in the traditional charging wire to acquire electric quantity percentage information, need not to increase new signal line, does not influence the signal transmission of traditional charging wire moreover.

Specifically, the control unit controls the communication loop to be connected and suspend acquiring the electric quantity percentage information when the power supply head receives and transmits the data signal, and controls the communication loop to be disconnected and acquire the electric quantity percentage information in real time when the power supply head does not receive and transmit the data signal.

Preferably, a switching circuit is further connected in series on the charging line, and the control unit controls the switching circuit to operate to disconnect the charging line when the electric quantity percentage information is equal to or exceeds a first preset value. Whether power is out of charge or not is judged through the power percentage information, the judgment result is accurate, and the problems that the existing full charge power-off judgment is inaccurate, only a lower threshold value can be set, and the power is off when the handheld device is not fully charged actually are solved.

Specifically, the control unit controls the switch circuit to act to disconnect the charging circuit when the percentage of electric quantity information is less than or equal to a second preset value, and the first preset value is greater than the second preset value. The scheme determines whether to recover charging according to the percentage information of the electric quantity, and solves the problems that the existing data line with the full charge and power failure function cannot judge the electric quantity of the current handheld device after power failure, can only determine whether to recover the power according to time, often recovers the power to charge when the handheld device discharges too much, and even cannot recover the power in time when a hand manually replaces the handheld device or the handheld device is in power failure due to other reasons.

Preferably, the display unit is a display screen. The display screen can be an LED digital display, an LCD display screen and the like.

Preferably, the control unit and the display unit are provided on the power supply head or the charging head. Install display element on charging head, the user of being convenient for directly looks over the present electric quantity percentage of handheld device in the head department that charges, need not to start handheld terminal, convenient to use experiences well.

Preferably, the charging device for displaying the percentage of electric quantity further comprises a cable, two ends of the cable are respectively connected with the power supply head and the charging head, a power line and the signal line are arranged in the cable, and the power line is connected between the power supply head and the charging head and used for transmitting electric energy.

Specifically, the control unit and the display unit are provided on the cable.

Preferably, the charging head is an expansion connector or a standard, mini, micro, Lightning, Type-C USB connector or a magnetic connector; the power supply head is a connector which is connected with an interface of a power adapter or a USB connector or a magnetic suction connector of standard, mini, micro specification and Type-C specification.

Preferably, the control unit acquires the electric quantity percentage information in real time.

Preferably, the charging device for displaying the percentage of electric quantity further comprises a detection circuit and a switch circuit, the detection circuit detects the charging current or voltage of the charging circuit to generate a collection signal, the switch circuit is connected in series to the charging circuit and controls the charging circuit to be switched on and off, and the control unit receives the collection signal and controls the switch circuit to operate according to the collection signal.

Drawings

Fig. 1 is a schematic structural diagram of the charging device of the present invention.

Fig. 2 is a circuit diagram of the charging device of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 1 and 2, the utility model discloses a show charging device 100 of electric quantity percentage, including the power supply head 11 that can link to each other with the feeder ear, can link to each other with handheld device charge head 12, connect in charge line between power supply head 11 and the head 12 that charges, with the signal line D +, D-, the control unit 20 and the display element 30 of the first 12 communication that charges, the control unit 20 passes through signal line D +, D-and obtains handheld device's electric quantity percentage information from the address of predetermineeing of memory in the handheld device, and control the display element 30 shows electric quantity percentage information. When the portable charging device is used, the power supply connector 11 is connected to the power supply end in an inserting mode, the charging connector 12 is connected to an interface of the handheld device to be charged in an inserting mode, the display unit 30 can display the electric quantity percentage information of the handheld device, and the handheld device is charged.

The handheld device can be an electronic device such as a mobile phone and a tablet which can detect the percentage of the stored electric quantity. The power supply terminal can be an external power supply, a charger, and electronic equipment, such as a notebook computer, a computer, and the like.

The control unit 20 obtains and controls the display unit 30 to display the power percentage information in real time. The charging head 12 has a communication protocol with the handheld device (this protocol is well known to those skilled in the art and not described in detail), and the control unit 20 directly accesses the information of the memory through the communication protocol to obtain the information of the percentage of electricity.

The display unit 30 is a display screen. The display screen can be an LED digital display, an LCD display screen and the like. In this embodiment, the control unit 20 and the display unit 30 are disposed on the charging head 12. Of course, the control unit 20 and the display unit 30 may also be provided at the power supply head 11.

Referring to fig. 1 and 2, the charging device 100 for displaying the percentage of electric quantity further includes a cable 13, two ends of the cable 13 are respectively connected to the power supply head 11 and the charging head 12, and a power line V +, V-and the signal line D +, D-are disposed in the cable 13, and the power line V +, V-is connected between the power supply head 11 and the charging head 12 for transmitting electric energy.

Of course, the control unit 20 and the display unit 30 may also be provided on the cable 13.

Wherein, the charging head 12 is an expansion connector or a USB connector or a magnetic connector with standard, mini, micro, Lightning, Type-C specification. The power supply head 11 is a connector which is connected with an interface of a power adapter or a USB connector or a magnetic suction connector of standard, mini, micro specification and Type-C specification.

Referring to fig. 2, the signal line D +, D-is connected between the charging head 12 and the power supply head 11 to form a communication loop, and the control unit 20 is installed on the communication loop and detects a state of the power supply head 11 to control on or off of the communication loop. This scheme makes control unit 20 use the signal line D +, D-in traditional charging wire to obtain electric quantity percentage information, need not to increase new signal line D +, D-, does not influence the signal transmission of traditional charging wire moreover.

Specifically, the control unit 20 controls the communication circuit to be turned on and to suspend acquiring the power percentage information when the power supply head 11 receives and transmits the data signal, and controls the communication circuit to be turned off and to acquire the power percentage information when the power supply head 11 does not receive and transmit the data signal.

The first interface of the control unit 20 is connected to the charging head 12 through the signal lines D + and D-, and the second interface of the control unit 20 is connected to the power supply head 11 through the signal lines D + and D-, for receiving signals of the charging head 12 and the power supply head 11 in real time. When the data signal is obtained at the power supply head 11, the control unit 20 controls the first interface and the second interface to be conducted, so that the communication loop is conducted, and the acquisition of the percentage of electric quantity information from the handheld device through the charging head 12 is stopped. When the data signal is not obtained at the power supply head 11, the control unit 20 controls the first interface and the second interface to be disconnected, so that the communication loop is disconnected, and the power percentage information is obtained from the handheld device in real time through the charging head 12, and the display screen is controlled to display the power percentage information. That is, the control unit 20 includes a switch circuit connected in series to the communication circuit, and a control terminal of the switch circuit is connected to the power supply head 11 to control the switch circuit to be turned on or off according to a data signal at a signal terminal corresponding to the power supply head 11.

Preferably, referring to fig. 2, the charging device 100 for displaying the percentage of electric quantity further includes a detection circuit 41 and a switch circuit 42, the detection circuit 41 detects a charging current or a charging voltage of a charging line to generate a collection signal, the switch circuit 42 is connected in series to the charging line and controls on/off of the charging line, and the control unit 20 receives the collection signal and controls the switch circuit 42 to operate according to the collection signal. In this embodiment, the detection circuit 41 is a current collection circuit, and is configured to collect a charging current of a charging circuit, and the control unit 20 compares the charging current, and controls the switch circuit 42 to be turned off when the charging current exceeds a preset value, so as to perform overcurrent protection.

The control unit 20 further controls the switch circuit 42 to be turned off when the percentage of electric quantity information reaches or exceeds a first preset value, so as to implement full charge and power off, and controls the switch circuit 42 to be turned on when the percentage of electric quantity information is lower than a second preset value, so as to reset charging, where the first preset value is greater than the second preset value, the first preset value may be 100% or 99%, the second preset value is 95% or 98%, and specific values thereof may be set according to actual needs, and are not limited to the above values. This embodiment has solved current full charge outage and has judged inaccurately, can only set up threshold value on the low side, cuts off the power supply when the handset is actually not fully filled, and can't judge the electric quantity of current handset after the outage, can't be time problem of recharging when the handset changes or lacks the power supply.

In this embodiment, the control unit 20 includes a comparison unit and an arithmetic unit, the comparison unit is composed of a plurality of comparators, a first comparator compares the percentage-of-charge information with a first preset value to output a first result, a second comparator compares the percentage-of-charge information with a second preset value to output a second result, wherein the first comparator outputs a high level (low level) when the percentage-of-charge information is equal to or higher than the first preset value, the second comparator outputs a high level (low level) when the percentage-of-charge information is equal to or lower than the first preset value, and the arithmetic unit performs budget comparison on the first result and the second result to output a third result to the control terminal of the switch circuit 42. Of course, the structure of the control unit 20 is not limited to the present embodiment.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. The utility model provides a show charging device of electric quantity percentage, includes the power supply head that can link to each other with the power supply end, can link to each other with handheld device the head that charges, connect in charging line, the control unit and the display element between power supply head and the head that charges, its characterized in that: the control unit acquires the electric quantity percentage information of the handheld device from a memory in the handheld device through the signal wire and controls the display unit to display the electric quantity percentage information.

2. The charging device for displaying percentage of charge as claimed in claim 1, wherein: the signal line is connected between the charging head and the power supply head to form a communication loop, and the control unit is arranged on the communication loop and used for detecting the state of the power supply head to control the connection or disconnection of the communication loop.

3. The charging device for displaying percentage of charge as claimed in claim 2, wherein: the control unit controls the communication loop to be connected and stops acquiring the electric quantity percentage information when the power supply head receives and transmits the data signals, and controls the communication loop to be disconnected and acquires the electric quantity percentage information in real time when the power supply head does not receive and transmit the data signals.

4. The charging device for displaying percentage of charge as claimed in claim 1, wherein: the charging circuit is also connected with a switching circuit in series, and the control unit controls the switching circuit to act to disconnect the charging circuit when the electric quantity percentage information is equal to or exceeds a first preset value.

5. The charging device for displaying percentage of charge as claimed in claim 4, wherein: the control unit controls the switch circuit to act to disconnect the charging circuit when the electric quantity percentage information is smaller than or equal to a second preset value, wherein the first preset value is larger than the second preset value.

6. The charging device for displaying percentage of charge as claimed in claim 1, wherein: the control unit and the display unit are arranged on the power supply head or the charging head.

7. The charging device for displaying percentage of charge as claimed in claim 1, wherein: the power supply device is characterized by further comprising a cable, wherein two ends of the cable are respectively connected with the power supply head and the charging head, a power line and a signal line are arranged in the cable, and the power line is connected between the power supply head and the charging head and used for transmitting electric energy.

8. The charging device for displaying percentage of charge as claimed in claim 7, wherein: the control unit and the display unit are arranged on the cable.

9. The charging device for displaying percentage of charge as claimed in claim 1, wherein: the charging head is an expansion connector or a standard, mini, micro, Lightning and Type-C USB connector or a magnetic suction connector; the power supply head is a connector which is connected with an interface of a power adapter or a USB connector or a magnetic suction connector of standard, mini, micro specification and Type-C specification.

10. The charging device for displaying percentage of charge as claimed in claim 1, wherein: the charging circuit is connected in series with the charging circuit and controls the on-off of the charging circuit, and the control unit receives the acquisition signal and controls the action of the switching circuit according to the acquisition signal.