CN206673619U - Charging device and cable and electronic mark chip thereof - Google Patents

Abstract

A charging device, a cable thereof and an electronic tag chip are provided. The charger is capable of adjusting the charging voltage according to at least one of the temperature sensing signal and the voltage sensing signal.

Description

Charging device and its cable and electronic marker chip

Technical field

It the utility model is related to a kind of electronic installation, and more particularly to a kind of charging device and its cable and electronic marker core Piece.

Background technology

With making rapid progress for science and technology, the electronic apparatus such as intelligent mobile phone, tablet PC is in the life of people Gradually play indispensable presence.For electronic apparatus, charging always is the problem of unavoidable.Closely Carry out increasing electronic apparatus and provide the function of supporting quick charge so that feeder ear can be with more efficient way Electronic apparatus is charged.In general, quick charge be by charging circuit provide higher charging voltage or Larger charging current is reached, but big charging current also has its risk, such as the equivalent resistance of the joint of charging cables It may become big because of abrasion, cause the temperature of charging cables to raise so that the probability of electronic component damage improves, and causes charging to fill The safety in utilization deficiency put.

Utility model content

The utility model provides a kind of charging device and its cable and electronic marker chip, can effectively reduce big charging current The probability for causing electronic component to damage, and improve the safety in utilization of charging device.

Cable of the present utility model includes power bus and connector.One end of cable is for coupling charger and in cable The other end of line provides charging voltage electron device by connector.Connector includes chip, and it is configured in connector, sense Survey the temperature of cable and the voltage at least one of power bus.Chip includes storage circuit, and it senses cable to storage chip Voltage sense signal caused by the voltage of temperature sensing signal and chip senses power bus caused by the temperature of line, passes through number Temperature sensing signal and voltage sense signal at least one are transmitted to charger and electronic installation according to transmission connecting-leg.

Power bus in the temperature and cable of electronic marker (E-Marker) chip senses cable of the present utility model Voltage is at least first, electronic marker chip includes storage circuit and data transfer pin.Storage circuit is to stored electrons mark Remember caused by temperature sensing signal caused by the temperature of chip senses cable and electronic marker chip senses power bus voltage Voltage sense signal.Data transfer pin is temperature sensing signal and voltage sense signal at least one are transmitted to charging Device or electronic installation.

Charging device of the present utility model includes charger, cable and connector.Cable includes power bus.Cable One end couples charger and the other end in cable provides charging voltage electron device by connector.Connector includes core Piece, it is configured in connector, the temperature of sense cable and the voltage of power bus at least one.Chip includes storage electricity Road, the voltage of temperature sensing signal and chip senses power bus caused by its temperature to storage chip sense cable produce Raw voltage sense signal, by data transfer pin by temperature sensing signal and voltage sense signal at least one transmit to Charger.

Based on above-mentioned, embodiment of the present utility model is by the chip in connector come the temperature and cable of sense cable The voltage of middle power bus at least first, and temperature sensing signal and voltage sense signal are supplied to charger, so as to fill Electrical equipment can be according to temperature sensing signal and voltage sense signal at least one adjustment charging voltage, to avoid big charging current from making Into the probability of electronic component damage, and improve the safety in utilization of charging device.

To enable features described above and advantage of the present utility model to become apparent, special embodiment below, and coordinate accompanying drawing It is described in detail below.

Brief description of the drawings

Fig. 1 is a kind of schematic diagram of charging device according to embodiment of the present utility model.

Fig. 2 is the schematic diagram according to a kind of charging device of another embodiment of the utility model.

Fig. 3 is the schematic diagram according to a kind of charging device of another embodiment of the utility model.

Fig. 4 is showing for the cable joint coupling of a kind of electronic installation and charging device according to embodiment of the present utility model It is intended to.

Fig. 5 is the schematic diagram according to a kind of charging device of another embodiment of the utility model.

Fig. 6 is the schematic diagram according to a kind of charging device of another embodiment of the utility model.

Fig. 7 is the schematic diagram according to a kind of charging device of another embodiment of the utility model.

Fig. 8 is the schematic diagram according to a kind of charging device of another embodiment of the utility model.

Symbol description

102：Charger

104、302、602：Connector

106：Cable

108、304：Chip

110、310：Storage circuit

202、306：Thermal sensor

204、308：Analog-to-digital circuit

206：AC DC change-over circuit

208：Power transmission control chip

402：Electronic installation

404：Power management chip

502、606：Bleeder circuit

VT1：Charging voltage

VBUS：Power bus

P1：Data transfer pin

RT1、RT2：Thermistor

R, R1~R6：Resistance

IG1：Charging current

GND：It is grounded pin

VC1、VE1：Voltage

RBUS、RG：Equivalent resistance

Embodiment

Fig. 1 is a kind of schematic diagram of charging device according to embodiment of the present utility model, refer to Fig. 1.Charging device Including charger 102, connector 104 and cable 106, one end coupling charger 102 of cable 106 and in the another of cable 106 One end provides charging voltage VT1 electron device (not shown) by connector 104, and electronic installation may be, for example, mobile phone, lithographic plate Computer, music player ... etc. device.Furthermore, it is understood that cable 108 includes power bus VBUS, connector 104 includes Chip 108, chip 108 couple power bus VBUS, and its chips 108 may be, for example, electronic marker (E-Marker) chip, even The connecting interface of joint 104 may be, for example, USB type-C interfaces, but be not limited.Chip 108 can sense cable 106 Temperature and power bus VBUS voltage at least first, and by temperature sensing signal caused by the temperature of sense cable 106 with And voltage sense signal caused by sensing power bus VBUS voltage is stored to the storage circuit 110 in chip 108, wherein storing up Deposit circuit 110 for example can be come in fact with static RAM (Static Random Access Memories, SRAM) Apply, but be not limited.Storage circuit 110 can be believed temperature sensing signal and voltage sensing by data transfer pin P1 Number at least one is transmitted to charger 102, charger 102 then can according to temperature sensing signal and voltage sense signal at least its One, which changes it, is applied to power bus VBUS voltage, and then adjusts charging voltage VT1 or stop charging, wherein data transfer Pin P1 may be, for example, collocation channel (Configuration Channel, CC) pin, but be not limited.

Thus by by the temperature of the sense cable 106 of chip 108 and power bus VBUS voltage in connector 104 At least one is supplied to charger, can make charger 102 immediately according to temperature sensing signal and voltage sense signal at least One adjusts charging voltage VT1 or stops charging, such as can judge electricity by temperature sensing signal and voltage sense signal Whether equivalent resistance between the joint of sub-device and cable 106 becomes big (such as when temperature sensing is believed because of abrasion or other reasonses Temperature corresponding to number is too high, or during brownout corresponding to voltage sense signal, represents connecing for electronic installation and cable 106 Equivalent resistance between head is excessive).When the equivalent electric resistive of the joint of cable 106 is big, charger 102 can reduce application to power supply Bus VBUS, or stop providing voltage and (such as filled to power bus VBUS in the temperature of cable 106 higher than preset temperature or electronics Put and stop providing voltage to power bus VBUS when the equivalent resistance between the joint of cable 106 is more than preset resistance), to avoid The temperature of cable 106 is too high, and the probability of electronic component damage is greatly reduced, and improves the safety in utilization of charging device.

Fig. 2 is the schematic diagram according to a kind of charging device of another embodiment of the utility model, refer to Fig. 2.Further For, chip 108 may include thermal sensor 202 and analog-to-digital circuit 204, and thermal sensor 202 can sense cable 106 Temperature, to produce temperature sensing signal.Analog-to-digital circuit 204 couples thermal sensor 202 and storage circuit 110, and simulation turns Digital circuit 204 can be converted to temperature sensing signal data signal, and be converted into the temperature sensing signal storage of data signal Deposit to storage circuit 110.In the present embodiment, thermal sensor 202 is to be implemented with thermistor RT1 with resistance R, thermistor It is coupled between power bus VBUS and resistance R one end RT1, and the wherein resistance R other end is coupled to earth terminal, temperature-sensitive electricity Resistance RT1 may be, for example, the thermistor of positive temperature coefficient or negative temperature coefficient.In addition, analog-to-digital circuit 204 can be by temperature-sensitive Cross-pressure (namely temperature sensing signal) on resistance RT1 is converted to data signal, and is stored to storage circuit 110, for Charger 102 accesses.Charger 102 may include AC DC change-over circuit 206 and power transmission control in the present embodiment Chip 208, AC DC change-over circuit 206 couple power bus VBUS and power transmission control chip 208, power transmission control Coremaking piece 208 is also coupled to chip 108.Alternating voltage can be converted to DC voltage by AC DC change-over circuit 206, be filled with providing Piezoelectric voltage VT1 is to electronic installation.Power transmission control chip 208 can store electricity certainly by the data transfer pin P1 of chip 108 Temperature sensing signal and voltage sense signal are fetched at least first, simultaneously according to temperature sensing signal and voltage sensing in road 110 The signal charging voltage VT1 that at least one adjustment AC DC change-over circuit 206 provides or stopping charging, to avoid charging greatly Electric current causes the probability that electronic component damages, and improves the safety in utilization of charging device.In another embodiment, thermistor RT1 may be alternatively located at outside chip 108.

It is worth noting that, the cable 106 of Fig. 1 and Fig. 2 embodiments is fixedly to be connected with charger 102, therefore It only includes the connector 104 one to be coupled with electronic installation, but in some embodiments, cable 106 may also comprise Two connectors, and this two connectors and be not limited and must be fixedly connected to charger 102 or electronic installation.Citing comes Say, Fig. 3 is the schematic diagram according to a kind of charging device of another embodiment of the utility model, refer to Fig. 3.Implement with Fig. 1,2 Unlike example, the charging device of the present embodiment also includes connector 302, and one end of cable 106 is coupled to by connector 104 Electronic installation (not shown), the other end are then connected to charger 102 by connector 302.In the present embodiment, thermistor RT1 is located at outside chip 108, and thermal sensor 202 can be serially connected with thermistor RT1 and electricity between power bus VBUS and ground connection Resistance R1 come implement (its can also Fig. 2 embodiments embodiment implement), analog-to-digital circuit 204 is coupled to thermistor RT1 and resistance R1 common joint, believed with receiving caused temperature sensing on thermistor RT1 and resistance R1 common joint Number.Thermal sensor 306 that connector 302 includes being made up of thermistor RT2 and resistance R2, analog-to-digital circuit 308 and Storage circuit 310, thermistor RT2 also are located at outside chip 304, and connector 302 can pass through the data transfer pin of chip 304 P1 sends temperature sensing signal caused by thermal sensor 306 to charger 102, and similarly, chip 304 may be, for example, electronics Tagging chip, the connecting interface of connector 302 may be, for example, USB type-C interfaces, and storage circuit 310 can be for example with quiet in addition State random access memory is implemented, and the data transfer pin P1 of chip 304 may be, for example, collocation channel pin, chip 108 Data transfer pin P1 and chip 304 data transfer pin P1 be coupled together.Because connector 302 has and connector 104 similar elements and framework, and its make flowing mode and Fig. 1,2 embodiments to make flowing mode similar, therefore will not be repeated here It makees flowing mode.

In addition, in some embodiments, the connector 104 of Fig. 3 embodiments and the connecting interface of connector 302 can be USB Type-C interfaces, due to USB Type-C specification, when USB Type-C cables need to support more than electric current 3A or need When supporting USB 3.1Gen1/Gen2 transmission speed, USB Type-C cables need built-in electronic to mark (E-Marker) chip, Therefore in the case of the connector 104 and connector 302 of Fig. 3 embodiments are USB type-C interfaces, the connection at cable both ends First 104 at least one need to set electronic marker chip with connector 302, namely chip 108 or chip 304 at least within it One is electronic marker chip.One of maximum feature of USB Type-C specifications is, uses the connector of USB Type-C specifications It can just insert or anti-plug is in host apparatus, no matter so user is just inserting the connector of USB Type-C interfaces or anti-plug is in charging In device 102, charger 102 can be charged by the connector of USB Type-C interfaces to mobile device, and can improve charging dress The ease of use put.

Fig. 4 is showing for the cable joint coupling of a kind of electronic installation and charging device according to embodiment of the present utility model It is intended to, refer to Fig. 4.Furthermore, it is understood that when electronic installation 402 is connected with the joint 104 of Fig. 1~Fig. 3 embodiments, electronic installation 402 can also be received according to the temperature sensing signal stored by chip 108 and voltage sense signal at least one to adjust it Charging current IG1, further to protect electronic installation 402, avoid it from being damaged.Specifically, electronic installation 402 can wrap Include power management chip 404, power pin and the ground connection pin of power management chip 404 be respectively coupled to power bus VBUS and The ground connection pin GND of chip 108.Power management chip 404 can (it indicates core according to the voltage sense signal from chip 108 Voltage VC1 between power bus VBUS that piece 108 is sensed and ground connection pin GND), the charging electricity on power bus VBUS The voltage VE1 flowed between IG1 and power management chip 404 power pin and ground connection pin calculates electronic installation 402 and joint Equivalent conjunction resistance (including the equivalent resistance RBUS related to power pin and related with ground connection pin equivalent between 104 Resistance RG), and the charging current IG1 received according to Equivalent conjunction resistance adjustment electronic installation 402.That is, equivalent resistance RBUS and equivalent resistance RG resistance value and equal to (VC1-VE1)/IG1, power management chip 404 can be according to being calculated Equivalent resistance RBUS and equivalent resistance RG resistance value and come judge the equivalent resistance of joint 104 whether because abrasion or other Reason and become big, and can accordingly adjust received charging current IG1 current value, also or stop charging, avoid excessive Charging current IG1 cause temperature too high, and reduce the probability of electronic component damage, improve the safety in utilization of charging device. In another embodiment, power management chip 404 also can judge joint 104 according to the temperature sensing signal from chip 108 Temperature whether be higher than a preset temperature, if exceeding the preset temperature, power management chip 404 can accordingly be adjusted and received Charging current IG1 current value, also or stop charged.

Fig. 5 is the schematic diagram according to a kind of charging device of another embodiment of the utility model, refer to Fig. 5.In this reality Apply in example, chip 108 is to detect the voltage on power bus VBUS, as shown in figure 5, the charging device and Fig. 2 of the present embodiment Embodiment difference is that the chip 108 of the present embodiment is included to detect the partial pressure of the voltage on power bus VBUS electricity Road 502.Bleeder circuit 502 can be for example including resistance R3 and R4, and resistance R3 and R4 are serially connected between power bus VBUS and ground connection, Voltage on dividing voltage supply bus VBUS, to produce branch pressure voltage.Analog-to-digital circuit 204 is coupled to resistance R3 and resistance R4 Common joint, to receive caused branch pressure voltage on resistance R3 and resistance R4 common joint, and be converted into voltage sense Survey signal to store to storage circuit 110, so that charger 102 or electronic installation 402 enter line access.

Similarly, though Fig. 5 embodiments cable 106 only includes the connector 104 one to be coupled with electronic installation, but In some embodiments, cable 106 may also comprise two connectors, and this two connectors and is not limited and must regularly connect It is connected to charger 102 or electronic installation.For example, Fig. 6 is a kind of charging device according to another embodiment of the utility model Schematic diagram, refer to Fig. 6.Unlike Fig. 5 embodiments, the charging device of the present embodiment also includes connector 602, cable 106 one end is coupled to electronic installation (not shown) by connector 104, and the other end is then connected to charging by connector 602 Device 102.Connector 602 includes the bleeder circuit 606, analog-to-digital circuit 308 and storage being made up of resistance R5 and resistance R6 Circuit 310 is deposited, similarly, chip 604 may be, for example, electronic marker chip, and the connecting interface of connector 602 may be, for example, USB Type-C interfaces, storage circuit 310 for example can be implemented with static RAM, and the data transfer pin of chip 604 P1 may be, for example, collocation channel pin.The data transfer pin P1 of chip 108 and chip 604 data transfer pin P1 are coupled in Together.Because connector 602 has the element and framework similar with connector 104, and it makees the work of flowing mode and Fig. 5 embodiments Flowing mode is similar, therefore will not be repeated here that it makees flowing mode.

Fig. 7 is the schematic diagram according to a kind of charging device of another embodiment of the utility model, refer to Fig. 7.In part In embodiment, the analog-to-digital circuit 204 of Fig. 5 and Fig. 6 embodiments can also be coupled directly to power bus VBUS, due to not Fig. 5 and Fig. 6 embodiments such as are needed to pass through bleeder circuit progress partial pressure, therefore for the voltage detecting of analog-to-digital circuit 308 The requirement of the degree of accuracy can reduce, and can save the production cost of connector chips.Due to the charging device and Fig. 5 of the present embodiment Charging device between difference be only that the presence or absence of bleeder circuit 502, the flowing mode of making in detail of the charging device of the present embodiment should It can be deduced by above-described embodiment, therefore will not be repeated here.

It is worth noting that, in some embodiments, the chip in connector can also have bleeder circuit and heat simultaneously Inductor, to carry out the voltage sensing on the temperature sensing of cable and power bus.Fig. 8 is according to another reality of the utility model A kind of schematic diagram of charging device of example is applied, as shown in figure 8, chip 108 can include thermal sensor 202 and bleeder circuit simultaneously 502, to carry out the voltage sensing on the temperature sensing of cable 106 and power bus VBUS, so as to produce temperature sensing signal And voltage sense signal, and stored into storage circuit 110, so that charger 102 and electronic installation access.Due to heat The embodiment and related start of inductor 202 and bleeder circuit 502 illustrate in above-described embodiment, therefore herein not Repeat again.In addition, in other embodiments, the cable 106 of the present embodiment also can include two companies such as Fig. 3 and Fig. 6 embodiment Joint, only there is a connector such as Fig. 8 embodiments without limiting.

In summary, embodiment of the present utility model by the chip in connector come the temperature and cable of sense cable The voltage of middle power bus at least first, and temperature sensing signal and voltage sense signal are supplied to charger, so as to fill Electrical equipment can be according to temperature sensing signal and voltage sense signal at least one adjustment charging voltage or stopping charging, to avoid Big charging current causes the probability that electronic component damages, and improves the safety in utilization of charging device.On the other hand, connect with cable The electronic installation connect also can adjust its charging received according to the temperature sensing signal and voltage sense signal of chip memory Electric current or stopping are charged, to provide further protection.

Although the utility model is disclosed as above with embodiment, but it is not limited to the utility model, Ren Hesuo Belonging to has the technical staff of usual knowledge in technical field, do not departing from spirit and scope of the present utility model, should can be with Make a little change and retouching, therefore the scope of protection of the utility model should be defined depending on what appended claim was defined.

Claims (26)

1. a kind of cable, including：

Power bus；And

Connector, one end of the cable is used to couple charger and the other end in the cable provides charging electricity by the connector Electron device is pressed, the connector includes：

Chip, it is configured in the connector, senses the temperature of the cable and the voltage of the power bus at least first, the chip Including：

Storage circuit, should to store temperature sensing signal caused by the temperature of the chip senses cable and the chip senses Voltage sense signal caused by the voltage of power bus, by data transfer pin by the temperature sensing signal and the voltage sense Signal at least one is surveyed to transmit to the charger and the electronic installation.

2. cable as claimed in claim 1, it is characterised in that for connecting the charger of the cable according to the temperature sensing Signal and the voltage sense signal at least one adjust the charging voltage or stop charging.

3. cable as claimed in claim 1, it is characterised in that for connecting the electronic installation of the cable according to the temperature sense Survey signal and the voltage sense signal at least one adjusts the charging current or stops being charged.

4. cable as claimed in claim 1, it is characterised in that the chip also includes：

Thermal sensor, the temperature of the cable is sensed, to produce the temperature sensing signal；And

Analog-to-digital circuit, the thermal sensor and the storage circuit are coupled, the temperature sensing signal are converted into data signal, And the temperature sensing signal for being converted into data signal is stored to the storage circuit.

5. cable as claimed in claim 4, it is characterised in that the thermal sensor includes：

Thermistor, it is coupled between the power bus and one end of resistance, the other end of the wherein resistance is coupled to earth terminal, The thermistor produces the temperature sensing signal in response to the temperature of the cable.

6. cable as claimed in claim 1, it is characterised in that the charger for connecting the cable includes：

AC DC change-over circuit, couples the power bus, and alternating voltage is converted into DC voltage, to provide charging electricity Pressure；And

Power transmission control chip, the AC DC change-over circuit and the chip are coupled, certainly should by the data transfer pin Storage circuit fetch the temperature sensing signal and the voltage sense signal at least first, according to the temperature sensing signal and should Voltage sense signal at least one adjusts the charging voltage of AC DC change-over circuit offer or stops charging.

7. cable as claimed in claim 1, it is characterised in that the chip also includes：

Bleeder circuit, couples the power bus, the voltage on the partial pressure power bus, to produce branch pressure voltage, the chip also according to The voltage sense signal is produced according to the branch pressure voltage.

8. cable as claimed in claim 1, it is characterised in that the chip is electronic marker chip, and the connection of the connector connects Mouth is USB type-C interfaces, and the data transfer pin is collocation channel pin.

9. a kind of electronic marker chip, the power bus voltage in the temperature of the electronic marker chip senses cable and the cable At least first, the electronic marker chip includes：

Storage circuit, to store temperature sensing signal and electricity caused by the temperature of the electronic marker chip senses cable Sub- tagging chip senses voltage sense signal caused by the power bus voltage；And

Data transfer pin, the temperature sensing signal and the voltage sense signal at least one are transmitted to charger or It is electronic installation.

10. electronic marker chip as claimed in claim 9, it is characterised in that the electronic marker chip is being configured at first In connector, one end of the cable is used to couple the charger by first connector, and the other end of the cable is provided and filled Piezoelectric voltage gives the electronic installation.

11. electronic marker chip as claimed in claim 10, it is characterised in that for connecting the charger foundation of the cable The temperature sensing signal and the voltage sense signal at least one adjust the charging voltage or stop charging.

12. electronic marker chip as claimed in claim 9, it is characterised in that the electronic marker chip is being configured at second In connector, one end of the cable is used to couple the charger, and the other end of the cable is used to carry by second connector The electronic installation is given for charging voltage.

13. electronic marker chip as claimed in claim 12, it is characterised in that for connect the electronic installation of the cable according to Received charging current is adjusted according to the temperature sensing signal and the voltage sense signal at least one or stopping is filled Electricity.

14. electronic marker chip as claimed in claim 9, it is characterised in that the electronic marker chip also includes：

Thermal sensor, the temperature of the cable is sensed, to produce the temperature sensing signal；And

Analog-to-digital circuit, the thermal sensor and the storage circuit are coupled, the temperature sensing signal are converted into data signal, And the temperature sensing signal for being converted into data signal is stored to the storage circuit.

15. electronic marker chip as claimed in claim 14, it is characterised in that the thermal sensor includes：

Thermistor, it is coupled between the power bus and one end of resistance, the other end of the wherein resistance is coupled to earth terminal, The thermistor produces the temperature sensing signal in response to the temperature of the cable.

16. electronic marker chip as claimed in claim 10, it is characterised in that for connecting the charger bag of the cable Include：

AC DC change-over circuit, couples the power bus, and alternating voltage is converted into DC voltage, to provide charging electricity Pressure；And

Power transmission control chip, the AC DC change-over circuit and the electronic marker chip are coupled, passes through the data transfer Pin fetches the temperature sensing signal and the voltage sense signal at least first, believing according to the temperature sensing from the storage circuit Number and the voltage sense signal at least one adjust the AC DC change-over circuit offer the charging voltage or stop fill Electricity.

17. electronic marker chip as claimed in claim 9, it is characterised in that the electronic marker chip also includes：

Bleeder circuit, couples the power bus, the voltage on the partial pressure power bus, to produce branch pressure voltage, the chip also according to The voltage sense signal is produced according to the branch pressure voltage.

18. electronic marker chip as claimed in claim 10, it is characterised in that the connecting interface of first connector is USB Type-C interfaces, the data transfer pin are collocation channel pin.

19. electronic marker chip as claimed in claim 12, it is characterised in that the connecting interface of second connector is USB Type-C interfaces, the data transfer pin are collocation channel pin.

20. a kind of charging device, including：

Charger；

Cable, including power bus；And

Connector, one end of the cable couples the charger and the other end in the cable provides charging voltage by the connector Electron device, the connector include：

Chip, it is configured in the connector, senses the temperature of the cable and the voltage of the power bus at least first, the chip Including：

Storage circuit, should to store temperature sensing signal caused by the temperature of the chip senses cable and the chip senses Voltage sense signal caused by the voltage of power bus, by data transfer pin by the temperature sensing signal and the voltage sense Signal at least one is surveyed to transmit to the charger.

21. charging device as claimed in claim 20, it is characterised in that the charger is according to the temperature sensing signal and is somebody's turn to do Voltage sense signal at least one adjusts the charging voltage.

22. charging device as claimed in claim 20, it is characterised in that the chip also includes：

Thermal sensor, the temperature of the cable is sensed, to produce the temperature sensing signal；And

Analog-to-digital circuit, the thermal sensor and the storage circuit are coupled, the temperature sensing signal are converted into data signal, And the temperature sensing signal for being converted into data signal is stored to the storage circuit.

23. charging device as claimed in claim 22, it is characterised in that the thermal sensor includes：

Thermistor, it is coupled between the power bus and one end of resistance, the other end of the wherein resistance is coupled to earth terminal, The thermistor produces the temperature sensing signal in response to the temperature of the cable.

24. charging device as claimed in claim 20, it is characterised in that the charger includes：

AC DC change-over circuit, couples the power bus, and alternating voltage is converted into DC voltage, to provide charging electricity Pressure；And

Power transmission control chip, the AC DC change-over circuit and the chip are coupled, certainly should by the data transfer pin Storage circuit fetch the temperature sensing signal and the voltage sense signal at least first, according to the temperature sensing signal and should Voltage sense signal at least one adjusts the charging voltage of AC DC change-over circuit offer.

25. charging device as claimed in claim 20, it is characterised in that the chip also includes：

Bleeder circuit, couples the power bus, the voltage on the partial pressure power bus, to produce branch pressure voltage, the chip also according to The voltage sense signal is produced according to the branch pressure voltage.

26. charging device as claimed in claim 20, it is characterised in that the chip is electronic marker chip, the connector Connecting interface is USB type-C interfaces, and the data transfer pin is collocation channel pin.