# US 2019/0356145 A1 · Electronic cigarette and battery protection circuit thereof

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- Number: US 2019/0356145 A1
- Document ID: US20190356145A1
- Status: Published application
- Kind: A1
- Application number: 16/477,842
- Filed: 2017-10-24
- Published: 2019-11-21
- Earliest claimed: 2017-01-13
- Assignees: Changzhou Patent Electronic Technology Co., Ltd
- Applicants: Changzhou Patent Electronic Technology Co., LTD
- Inventors: Weihua QIU
- Web page: https://patentgrep.com/patent/US20190356145A1

## CPC

- H02J 7/68: using circuits for correcting or protecting against reverse-polarity
- A24F 40/50: Control or monitoring
- H01M 50/574: Devices or arrangements for the interruption of current
- H02H 7/18: for batteries; for accumulators
- H02J 7/54: Passive balancing, e.g. using resistors or parallel MOSFETs
- Y02E 60/10: Energy storage using batteries
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H02H: EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS (indicating or signalling undesired working conditions G01R, e.g. G01R31/00, G08B; locating faults along lines G01R31/08; emergency protective devices H01H)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

An electronic cigarette and a battery protection circuit thereof. The battery protection circuit is used for connecting with a battery. The battery protection circuit has a first connecting end and a second connecting end, the first connecting end being connected with one terminal of a battery and the second connecting end being connected with the other terminal of the battery. The battery protection circuit further comprises a third connecting end, a fourth connecting end, a fifth connecting end, and a sixth connecting end, the third connecting end and the fourth connecting end being both used for connecting with a positive voltage source, and the fifth connecting end and the sixth connecting end being both used for connecting with ground.

## Claims

### Claim at position 1

1-10. (canceled)

### Claim 11

A battery protection circuit, configured for connecting with a battery, comprising:
a first connecting end configured to connect with a terminal of the battery;
a second connecting end configured to connect with an opposite terminal of the battery;
a third connecting end;
a fourth connecting end;
a fifth connecting end, and
a sixth connecting end;
wherein the third connecting end and the fourth connecting end are both configured for connecting with a positive voltage source, the fifth connecting end and the sixth connecting end are both configured for connecting with ground, when the first connecting end is connected to a positive terminal of the battery, and the second connecting end is connected to a negative terminal of the battery, then the third connecting end is connected to the first connecting end, and the fifth connecting end is connected to the second connecting end; when the first connecting end is connected to the negative terminal of the battery, and the second connecting end is connected to the positive terminal of the battery, then the sixth connecting end is connected to the first connecting end, and the fourth connecting end is connected to the second connecting end.

### Claim 12 (depends on 11)

The battery protection circuit according to claim 11, wherein the battery protection circuit comprises a first switch, a second switch, a third switch, and a fourth switch, which all have three ends, the three ends of each switch comprises a first end, a second end, and a control end, a conduction between the first end and the second end is controlled by the control end, and determined by a potential of the control end, a connection between first switch and the fourth switch is conducted by a high potential, and is cutoff by a low potential, a connection between the second switch and the third switch is conducted by a low potential, and is cutoff by a high potential;
in the first switch, the first end acts as the third connecting end and is connected to the positive voltage source, the second end and the control end are both connected to the first connecting end;
in the second switch, the first end acts as the sixth connecting end and is connected to the ground, the second end and the control end are both connected to the first connecting end;
in the third switch, the first end acts as the fifth connecting end and is connected to the ground, the second end and the control end are both connected to the second connecting end;
in the fourth switch, the first end acts as the fourth connecting end and is connected to the positive voltage source, the second end and the control end are both connected to the second connecting end.

### Claim 13 (depends on 12)

The battery protection circuit according to claim 12, wherein both the first switch and the fourth switch are NMOS transistors, the first end is a source terminal, the second end is a drain terminal, and the control end is a gate terminal; both the second switch and the third switch are PMOS transistors, the first end is a source terminal, the second end is a drain terminal, the control end is a gate terminal.

### Claim 14 (depends on 13)

The battery protection circuit according to claim 13, wherein each of the first switch and the fourth switch adopts a AON6512 chip, wherein, the 1-3 pins of the AON6512 chip acting as the first switch are all led out to act as the third connecting end and connect with the positive voltage source, the 4-8 pins are all connected to the first connecting end; the 1-3 pins of the AON6512 chip acting as the fourth switch are all led out to act as the fourth connecting end and connect with the positive voltage source, the 4-8 pins are all connected to the second connecting end;
each of the second switch and the third switch adopts a AON6411 chip, wherein, the 1-3 pins of the AON6411 chip acting as the second switch are all led out to act as the sixth connecting end and connect with the ground, the 4-8 pins are all connected to the first connecting end; the 1-3 pins of the AON6411 chip acting as the third switch are all led out to act as the fifth connecting end and connect with the ground, the 4-8 pins are all connected to the second connecting end.

### Claim 15 (depends on 11)

The battery protection circuit according to claim 11, comprising a first relay switch module and a second relay switch module, wherein the first relay switch module comprises a first coil and a first switch, and the second relay switch module comprises a second coil and a second switch;
opposite ends of the first coil are connected to the first connecting end and the second connecting end, respectively, the normally open contact of the first switch acts as the third connecting end and is connected to the positive voltage source, the normally closed contact acts as the sixth connecting end and is connected to the ground, the common contact is connected to the first connecting end;
opposite ends of the second coil are connected to the first connecting end and the second connecting end, respectively, the normally open contact of the second switch acts as the fifth connecting end and is connected to the ground, the normally closed contact acts as the fourth connecting end and is connected to the positive voltage source, the common contact is connected to the second connecting end;
wherein, the first connecting end is connected to the first coil and the second coil via a first anti-reverse diode, the positive terminal of the first anti-reverse diode is connected to the first connecting end.

### Claim 16

An electronic cigarette, comprising a master control circuit, an atomizing circuit, and a battery protection circuit, the battery protection circuit is configured to connect with the battery, for providing power for the master control circuit and the atomizing circuit.

### Claim 17 (depends on 16)

The electronic cigarette according to claim 16, wherein the battery protection circuit, configured for connecting with a battery, comprising a first connecting end configured to connect with a terminal of the battery;
a second connecting end configured to connect with an opposite terminal of the battery;
a third connecting end;
a fourth connecting end;
a fifth connecting end, and
a sixth connecting end;
wherein the third connecting end and the fourth connecting end are both configured for connecting with a positive voltage source, the fifth connecting end and the sixth connecting end are both configured for connecting with ground, when the first connecting end is connected to a positive terminal of the battery, and the second connecting end is connected to a negative terminal of the battery, then the third connecting end is connected to the first connecting end, and the fifth connecting end is connected to the second connecting end; when the first connecting end is connected to the negative terminal of the battery, and the second connecting end is connected to the positive terminal of the battery, then the sixth connecting end is connected to the first connecting end, and the fourth connecting end is connected to the second connecting end.

### Claim 18 (depends on 17)

The electronic cigarette according to claim 17, wherein the battery protection circuit comprises a first switch, a second switch, a third switch, and a fourth switch, which all have three ends, the three ends of each switch comprises a first end, a second end, and a control end, a conduction between the first end and the second end is controlled by the control end, and determined by a potential of the control end, a connection between first switch and the fourth switch is conducted by a high potential, and is cutoff by a low potential, a connection between the second switch and the third switch is conducted by a low potential, and is cutoff by a high potential;
in the first switch, the first end acts as the third connecting end and is connected to the positive voltage source, the second end and the control end are both connected to the first connecting end;
in the second switch, the first end acts as the sixth connecting end and is connected to the ground, the second end and the control end are both connected to the first connecting end;
in the third switch, the first end acts as the fifth connecting end and is connected to the ground, the second end and the control end are both connected to the second connecting end;
in the fourth switch, the first end acts as the fourth connecting end and is connected to the positive voltage source, the second end and the control end are both connected to the second connecting end.

### Claim 19 (depends on 18)

The electronic cigarette according to claim 18, wherein both the first switch and the fourth switch are NMOS transistors, the first end is a source terminal, the second end is a drain terminal, and the control end is a gate terminal; both the second switch and the third switch are PMOS transistors, the first end is a source terminal, the second end is a drain terminal, the control end is a gate terminal.

### Claim 20 (depends on 17)

The electronic cigarette according to claim 17, comprising a first relay switch module and a second relay switch module, wherein the first relay switch module comprises a first coil and a first switch, and the second relay switch module comprises a second coil and a second switch;
opposite ends of the first coil are connected to the first connecting end and the second connecting end, respectively, the normally open contact of the first switch acts as the third connecting end and is connected to the positive voltage source, the normally closed contact acts as the sixth connecting end and is connected to the ground, the common contact is connected to the first connecting end;
opposite ends of the second coil are connected to the first connecting end and the second connecting end, respectively, the normally open contact of the second switch acts as the fifth connecting end and is connected to the ground, the normally closed contact acts as the fourth connecting end and is connected to the positive voltage source, the common contact is connected to the second connecting end;
wherein, the first connecting end is connected to the first coil and the second coil via a first anti-reverse diode, the positive terminal of the first anti-reverse diode is connected to the first connecting end.

### Claim 21 (depends on 17)

The electronic cigarette according to claim 17, further comprising the battery, wherein the positive terminal of the battery is connected to the first connecting end of the battery protection circuit and the negative terminal of the battery is connected to the second connecting end of the battery protection circuit, or, the positive terminal of the battery is connected to the second connecting end of the battery protection circuit and the negative terminal of the battery is connected to the first connecting end of the battery protection circuit.

### Claim 22 (depends on 17)

The electronic cigarette according to claim 17, wherein the battery is detachably or fixedly connected to the battery protection circuit.

### Claim 23 (depends on 17)

The electronic cigarette according to claim 17, wherein the battery is a rechargeable battery.

### Claim 24 (depends on 17)

The electronic cigarette according to claim 17, further comprising a receiving case and a battery case, wherein the battery case is configured for receiving the battery, the battery case forms two first interfaces which are same as each other in the battery case, the two first interfaces are respectively led out from the positive terminal and the negative terminal of the battery, the receiving case is connected to the first connecting end and the second connecting end of the battery protection circuit, the receiving case forms two second interfaces which are same as each other in the receiving case, the two second interfaces are respectively led from the first connecting end and the second connecting end into an interior of the receiving case; the battery case is positioned in the receiving case, the first interfaces are connected to the second interfaces to enabling the battery case to connect with the receiving case.

### Claim 25

An electronic cigarette, comprising a master control circuit, an atomizing circuit, and a battery protection circuit, wherein the battery protection circuit is configured to supply power to the main control circuit and the atomization circuit when a battery is installed either in a forward direction or in a reverse direction.

### Claim 26 (depends on 25)

The electronic cigarette according to claim 25, wherein the battery protection circuit, configured for connecting with the battery, comprising:
a first connecting end configured to connect with a terminal of the battery;
a second connecting end configured to connect with an opposite terminal of the battery;
a third connecting end;
a fourth connecting end;
a fifth connecting end, and
a sixth connecting end;
wherein the third connecting end and the fourth connecting end are both configured for connecting with a positive voltage source, the fifth connecting end and the sixth connecting end are both configured for connecting with ground, when the first connecting end is connected to a positive terminal of the battery, and the second connecting end is connected to a negative terminal of the battery, then the third connecting end is connected to the first connecting end, and the fifth connecting end is connected to the second connecting end; when the first connecting end is connected to the negative terminal of the battery, and the second connecting end is connected to the positive terminal of the battery, then the sixth connecting end is connected to the first connecting end, and the fourth connecting end is connected to the second connecting end.

### Claim 27 (depends on 25)

The electronic cigarette according to claim 25, wherein the battery protection circuit comprises a first switch, a second switch, a third switch, and a fourth switch, which all have three ends, the three ends of each switch comprises a first end, a second end, and a control end, a conduction between the first end and the second end is controlled by the control end, and determined by a potential of the control end, a connection between first switch and the fourth switch is conducted by a high potential, and is cutoff by a low potential, a connection between the second switch and the third switch is conducted by a low potential, and is cutoff by a high potential;
in the first switch, the first end acts as the third connecting end and is connected to the positive voltage source, the second end and the control end are both connected to the first connecting end;
in the second switch, the first end acts as the sixth connecting end and is connected to the ground, the second end and the control end are both connected to the first connecting end;
in the third switch, the first end acts as the fifth connecting end and is connected to the ground, the second end and the control end are both connected to the second connecting end;
in the fourth switch, the first end acts as the fourth connecting end and is connected to the positive voltage source, the second end and the control end are both connected to the second connecting end.

### Claim 28 (depends on 27)

The electronic cigarette according to claim 27, wherein both the first switch and the fourth switch are NMOS transistors, the first end is a source terminal, the second end is a drain terminal, and the control end is a gate terminal; both the second switch and the third switch are PMOS transistors, the first end is a source terminal, the second end is a drain terminal, the control end is a gate terminal.

### Claim 29 (depends on 26)

The electronic cigarette according to claim 26, comprising a first relay switch module and a second relay switch module, wherein the first relay switch module comprises a first coil and a first switch, and the second relay switch module comprises a second coil and a second switch; opposite ends of the first coil are connected to the first connecting end and the second connecting end, respectively, the normally open contact of the first switch acts as the third connecting end and is connected to the positive voltage source, the normally closed contact acts as the sixth connecting end and is connected to the ground, the common contact is connected to the first connecting end;
opposite ends of the second coil are connected to the first connecting end and the second connecting end, respectively, the normally open contact of the second switch acts as the fifth connecting end and is connected to the ground, the normally closed contact acts as the fourth connecting end and is connected to the positive voltage source, the common contact is connected to the second connecting end;
wherein, the first connecting end is connected to the first coil and the second coil via a first anti-reverse diode, the positive terminal of the first anti-reverse diode is connected to the first connecting end.

### Claim 30 (depends on 26)

The electronic cigarette according to claim 26, further comprising the battery, wherein the positive terminal of the battery is connected to the first connecting end of the battery protection circuit, the negative terminal of the battery is connected to the second connecting end of the battery protection circuit, or, the positive terminal of the battery is connected to the second connecting end of the battery protection circuit, the negative terminal of the battery is connected to the first connecting end of the battery protection circuit.