IT201800009012A1 - END OF CHARGE CONTROLLER FOR USB RECHARGEABLE DEVICES - Google Patents

END OF CHARGE CONTROLLER FOR USB RECHARGEABLE DEVICES Download PDF

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Publication number
IT201800009012A1
IT201800009012A1 IT102018000009012A IT201800009012A IT201800009012A1 IT 201800009012 A1 IT201800009012 A1 IT 201800009012A1 IT 102018000009012 A IT102018000009012 A IT 102018000009012A IT 201800009012 A IT201800009012 A IT 201800009012A IT 201800009012 A1 IT201800009012 A1 IT 201800009012A1
Authority
IT
Italy
Prior art keywords
controller
usb
usb connector
connector
current flowing
Prior art date
Application number
IT102018000009012A
Other languages
Italian (it)
Inventor
Andrea Tognoli
Lorenzo Craia
Luca Martini
Original Assignee
Andrea Tognoli
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Andrea Tognoli filed Critical Andrea Tognoli
Priority to IT102018000009012A priority Critical patent/IT201800009012A1/en
Publication of IT201800009012A1 publication Critical patent/IT201800009012A1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H02J7/0032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Description

Descrizione Tecnica del disegno (Fig.2) Technical description of the drawing (Fig. 2)

Il Controllore funziona in modo da leggere la corrente che scorre tra un connettore USB di ingresso e un connettore USB di uscita scollegando il dispositivo in carica quando la corrente letta, scende sotto una determinata soglia. Questa soglia è scelta per impostare il livello di carica finale della batteria del dispositivo, evitando che il dispositivo rimanga collegato all'alimentatore USB anche a carica completata. The Controller works to read the current flowing between a USB input connector and a USB output connector by disconnecting the device being charged when the current read falls below a certain threshold. This threshold is chosen to set the final charge level of the device's battery, preventing the device from remaining connected to the USB power supply even after charging is complete.

Un esempio per implementare questo Controllore è il seguente: An example to implement this Controller is the following:

Il Controllore, mediante un circuito elettronico (4), legge la corrente che scorre tra la porta USB (1) di ingresso e la porta USB (2) di uscita e pilota un relè (6) atto a scollegare il dispositivo in carica quando la corrente letta scende sotto una determinata soglia. La corrente viene stimata mediante la lettura della caduta di tensione indotta sulla resistenza di Sense (5) dalla corrente che scorre tra l'USB (1) e l'USB (2). Quando il Controllore è collegato all'alimentatore USB mediante il connettore USB (1), il relè (6) è in posizione aperta e il dispositivo da caricare, collegato all'USB (2), non è in carica essendo scollegato dall'alimentatore USB. Per avviare la carica del dispositivo è necessario premere il pulsante (3) che attiva il relè (6) il quale collega il dispositivo all'alimentatore USB ponendolo in carica. Le due spie luminose (7) indicheranno con colori diversi lo stato del dispositivo: in carica (collegato all'alimentatore USB) o non in carica (scollegato dall'alimentatore USB). La soglia della corrente alla quale il Controllore disattiva il relè (6), e quindi scollega il dispositivo, è determinata in base alla percentuale di carica della batteria alla quale si vuole fermare la carica. Se si vuole scollegare la batteria del dispositivoa carica completa, la soglia sarà impostata a una corrente leggermente maggiore della corrente assorbita dal dispositivo mentre la batteria è carica. La soglia può essere impostata mediante un partitore resistivo (8) che può essere fisso (soglia fissa) o variabile (soglia impostabile). Ad esempio, per impostare la soglia si può usarecome partitore resistivo un trimmer. The Controller, by means of an electronic circuit (4), reads the current flowing between the input USB port (1) and the output USB port (2) and drives a relay (6) able to disconnect the device being charged when the current read falls below a certain threshold. The current is estimated by reading the voltage drop induced on the Sense resistor (5) by the current flowing between the USB (1) and the USB (2). When the Controller is connected to the USB power supply through the USB connector (1), the relay (6) is in the open position and the device to be charged, connected to the USB (2), is not charging since it is disconnected from the USB power supply . To start charging the device it is necessary to press the button (3) which activates the relay (6) which connects the device to the USB power supply and puts it in charge. The two indicator lights (7) will indicate the status of the device in different colors: charging (connected to the USB power supply) or not charging (disconnected from the USB power supply). The current threshold at which the Controller deactivates the relay (6), and therefore disconnects the device, is determined on the basis of the percentage of battery charge at which the charge is to be stopped. If you want to disconnect the device battery when fully charged, the threshold will be set to a current slightly higher than the current drawn by the device while the battery is charged. The threshold can be set by means of a resistive divider (8) which can be fixed (fixed threshold) or variable (settable threshold). For example, a trimmer can be used as a resistive divider to set the threshold.

Claims (1)

Rivendicazioni 1. Un Controllore di fine carica per dispositivi ricaricabili tramite USB comprendente: a. Un connettore USB (1) di ingresso per collegare il Controllore all'alimentatore USB b. Un connettore USB (2) di uscita per collegare il dispositivo da ricaricare al Controllore c. Un pulsante (3) per avviare la carica della batteria del dispositivo da ricaricare d. Un circuito elettronico (4) in grado di leggere la corrente che scorre tra la porta USB (1) di ingresso e (2) di uscita e. Un relè per mettere in contatto elettrico il connettore USB (1) e il connettore USB (2) 2. Un controllore, secondo la rivendicazione 1, che permetta lo scollegamento fisico per mezzo di un interruttore elettromeccanico del connettore USB (2) dal connettore USB (1). 3. Un controllore, secondo una o più rivendicazione precedenti, che utilizzi un partitore resistivo per impostare la soglia della corrente alla quale scollegare il connettore USB (1) e il connettore USB (2). 4. Un controllore, secondo una o più rivendicazione precedenti, che permetta di impostare mediante un trimmer o altro componente il valore della soglia della corrente che scorre tra il connettore USB (1) e il connettore USB (2) alla quale disconnettere i due connettori. 5. Un controllore, secondo una o più rivendicazione precedenti, che abbia fisso il valore della soglia della corrente che scorre tra il connettore USB (1) e il connettore USB (2) alla quale disconnettere i due connettori. 6. Un controllore, secondo una o più rivendicazione precedenti, che utilizzi una resistenza di Sense (5) per la lettura della corrente che scorre tra il connettore USB (1) e il connettore USB (2). 7. Un controllore, secondo una o più rivendicazione precedenti, che disponga di spie luminose per segnalare lo stato del dispositivo sotto carica. 8. Un controllore, secondo una o più rivendicazione precedenti, in cui il controllore è di dimensioni tali da risultare tascabile. Claims 1. An end of charge controller for USB rechargeable devices comprising: a. One USB input connector (1) to connect the Controller to the USB power supply b. A USB output connector (2) to connect the device to be recharged to the Controller c. A button (3) to start charging the battery of the device to be recharged d. An electronic circuit (4) capable of reading the current flowing between the USB port (1) of input and (2) of output And. A relay to make electrical contact between the USB connector (1) and the USB connector (2) 2. A controller, according to claim 1, which allows physical disconnection by means of an electromechanical switch of the USB connector (2) from the USB connector (1). 3. A controller, according to one or more preceding claims, which uses a resistive divider to set the current threshold at which to disconnect the USB connector (1) and the USB connector (2). 4. A controller, according to one or more preceding claims, which allows to set, by means of a trimmer or other component, the threshold value of the current flowing between the USB connector (1) and the USB connector (2) from which to disconnect the two connectors . 5. A controller, according to one or more preceding claims, which has fixed the threshold value of the current flowing between the USB connector (1) and the USB connector (2) from which to disconnect the two connectors. 6. A controller, according to one or more preceding claims, which uses a Sense resistor (5) for reading the current flowing between the USB connector (1) and the USB connector (2). 7. A controller, according to one or more preceding claims, which has indicator lights to signal the state of the device under charge. 8. A controller, according to one or more preceding claims, in which the controller is of such size as to be pocketable.
IT102018000009012A 2018-10-01 2018-10-01 END OF CHARGE CONTROLLER FOR USB RECHARGEABLE DEVICES IT201800009012A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT102018000009012A IT201800009012A1 (en) 2018-10-01 2018-10-01 END OF CHARGE CONTROLLER FOR USB RECHARGEABLE DEVICES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000009012A IT201800009012A1 (en) 2018-10-01 2018-10-01 END OF CHARGE CONTROLLER FOR USB RECHARGEABLE DEVICES

Publications (1)

Publication Number Publication Date
IT201800009012A1 true IT201800009012A1 (en) 2020-04-01

Family

ID=64744833

Family Applications (1)

Application Number Title Priority Date Filing Date
IT102018000009012A IT201800009012A1 (en) 2018-10-01 2018-10-01 END OF CHARGE CONTROLLER FOR USB RECHARGEABLE DEVICES

Country Status (1)

Country Link
IT (1) IT201800009012A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105322397A (en) * 2015-10-13 2016-02-10 深圳市祝你快乐科技有限公司 USB port connector with charging protection function and implementation method of USB port connector
WO2016148638A1 (en) * 2015-03-13 2016-09-22 Prufen Pte Ltd A cable for data and current transmission and a related apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016148638A1 (en) * 2015-03-13 2016-09-22 Prufen Pte Ltd A cable for data and current transmission and a related apparatus
CN105322397A (en) * 2015-10-13 2016-02-10 深圳市祝你快乐科技有限公司 USB port connector with charging protection function and implementation method of USB port connector

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