CN201956730U - Portable alternating current power supply externally connected with storage battery - Google Patents

Portable alternating current power supply externally connected with storage battery Download PDF

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Publication number
CN201956730U
CN201956730U CN2010206926735U CN201020692673U CN201956730U CN 201956730 U CN201956730 U CN 201956730U CN 2010206926735 U CN2010206926735 U CN 2010206926735U CN 201020692673 U CN201020692673 U CN 201020692673U CN 201956730 U CN201956730 U CN 201956730U
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CN
China
Prior art keywords
circuit
voltage
power supply
storage battery
external
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN2010206926735U
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Chinese (zh)
Inventor
徐德进
武强
胡成绰
范晔平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Guangwei Electric Co., Ltd.
Original Assignee
SHANGHAI GUANGWEI ELECTRIC CO Ltd
SHANGHAI GUANGWEITUOPU ELECTRIC POWER CO Ltd
Shanghai Guangwei Electric and Tools Co Ltd
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 SHANGHAI GUANGWEI ELECTRIC CO Ltd, SHANGHAI GUANGWEITUOPU ELECTRIC POWER CO Ltd, Shanghai Guangwei Electric and Tools Co Ltd filed Critical SHANGHAI GUANGWEI ELECTRIC CO Ltd
Priority to CN2010206926735U priority Critical patent/CN201956730U/en
Application granted granted Critical
Publication of CN201956730U publication Critical patent/CN201956730U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a portable alternating current power supply externally connected with a storage battery. The portable alternating current power supply comprises a three-stage charging circuit and a direct current/alternating current converting circuit which are respectively connected with the external storage battery; when the three-stage charging circuit is connected with an external alternating current power supply, a direct current voltage can be output for charging the storage battery; when the three-stage charging circuit is not connected with the external alternating current power supply, the direct current voltage output by the storage battery is converted into an alternating current voltage by the direct current/alternating current converting circuit and is then output for supplying an alternating current to external electric equipment; and an MCU (Microprogrammed Control Unit) control circuit is used for detecting a charging or power supplying state in real time and displaying an alarm through a status indication circuit. The portable alternating current power supply is also provided with a USB (Universal Serial Bus) port output circuit and a battery power supply control circuit, which are respectively used for supplying power of a direct current power supply to mobile equipment connected through a USB interface or an externally connected battery. Therefore, the portable alternating current power supply can simultaneously meet the power demand of the mobile equipment on alternating current and direct current.

Description

A kind of Portable AC power supply of external storage battery
Technical field
The utility model relates to a kind of power-supply device, particularly a kind of Portable AC power supply of external storage battery.
Background technology
We are in the epoch of one " moving ", mobile office, mobile communication, mobile leisure and amusement.
In the state that moves, people not only need more need our alternating current indispensable in surroundings simultaneously by the low-voltage DC of battery or storage battery supply.Lack portable AC power at present, be difficult to satisfy the alternating current use needs of mobile device.
The utility model content
The purpose of this utility model provides a kind of Portable AC power supply of external storage battery, and it can produce AC power when external lead acid accumulator; And when external AC power supply, can produce rectifier power source and give external lead acid battery charge.
In order to achieve the above object, the technical solution of the utility model provides a kind of Portable AC power supply of external storage battery, comprises the syllogic charging circuit that is connected respectively with outside storage battery and direct current to ac conversion circuit;
When described syllogic charging circuit was connected with external ac power source, exportable direct voltage was described charge in batteries;
When described syllogic charging circuit was not connected with external ac power source, the direct voltage of described storage battery output was exported after ac conversion circuit is converted to alternating voltage via described direct current, for external electric equipment is carried out Alternating Current Power Supply.
The Portable AC power supply of described external storage battery, also comprise an alternating current and transducer commutation circuit, it cuts off described direct current to being connected of ac conversion circuit and external equipment when being connected with external ac power source, directly export external ac power source and power;
And when not being connected with described external ac power source, the input of this alternating current and transducer commutation circuit, switching is connected to the output of described direct current to ac conversion circuit, provides alternating voltage to ac conversion circuit to external electric equipment by described direct current.
The Portable AC power supply of described external storage battery also comprises a MCU control circuit; Described syllogic charging circuit, direct current be to ac conversion circuit and described alternating current and transducer commutation circuit, is connected with described MCU control circuit respectively and is embodied as the DC charging of storage battery or is the Alternating Current Power Supply of external electric equipment under its control.
Described syllogic charging circuit is disposed with input filter circuit, rectification circuit and half-bridge reduction voltage circuit;
Described input filter circuit, it is connected with the external communication electrical network, and the interference signal that produces when outside alternating voltage is imported is carried out filtering;
Described rectification circuit becomes high-voltage dc voltage with the external communication voltage transitions;
Described half-bridge reduction voltage circuit converts high-voltage dc voltage to low-voltage dc voltage;
Described half-bridge reduction voltage circuit also is connected with described MCU control circuit, exports low-voltage dc voltage to described storage battery and charge under its control.
Described direct current is provided with prime DC voltage booster circuit and connected back level direct current to AC transform circuit to ac conversion circuit;
Described prime DC voltage booster circuit is connected with described storage battery, and the low-voltage dc voltage that storage battery is exported is converted to high-voltage dc voltage;
Described prime DC voltage booster circuit also comprises fault secure circuit, when unusual condition takes place, can stop the progress of work of described direct current to ac conversion circuit, and by MCU control circuit output alarm signal.
Described back level direct current comprises post-stage drive circuit and connected full bridge inverter to AC transform circuit;
Described post-stage drive circuit is connected with described MCU control circuit, and works under its control;
Described full bridge inverter is driven by described post-stage drive circuit, with the high-voltage DC power supply of described prime DC voltage booster circuit conversion output, exports after further being converted to high-voltage ac power.
Described MCU control circuit is provided with some PWM drive circuits, and its corresponding output pwm signal is controlled described syllogic charging circuit and direct current respectively to ac conversion circuit;
Described MCU control circuit also is provided with single-chip microcomputer minimization system circuit, the state of described DC charging or Alternating Current Power Supply is detected, and detection feedback information to described PWM drive circuit carries out the adjustment of drive control signal.
The Portable AC power supply of described external storage battery also comprises a condition indication circuit, and it is connected with described MCU control circuit, and the state that carries out DC charging or Alternating Current Power Supply shows, perhaps makes alarm when fault takes place.
The Portable AC power supply of described external storage battery also is provided with the USB port output circuit, and it is connected with described MCU control circuit and controlled by it, for the equipment that is connected by USB interface on the described USB port output circuit provides DC power supply.
The Portable AC power supply of described external storage battery also is provided with the battery power control circuit, and it is connected with described storage battery, for the storage battery that is connected on this battery power control circuit output outward provides DC power supply.
The utility model provides a kind of Portable AC power supply of external storage battery, its advantage is: the utility model is under the control of MCU control circuit, when described syllogic charging circuit is connected with the external communication electrical network, directly be the power consumption equipment power supply while, exportable direct voltage is described charge in batteries.When it was not connected with the external communication electrical network, the low-voltage dc voltage of described storage battery, was communicated with external electric equipment with the transducer commutation circuit by alternating current to ac conversion circuit conversion back output through described direct current, realizes the power supply of alternating voltage.
The process of this charging or Alternating Current Power Supply is also detected in real time by described MCU control circuit, and shows by condition indication circuit, and makes alarm when fault takes place.Therefore, the utility model is as portable AC power, and the alternating current that can satisfy existing mobile device uses needs.
The utility model also is provided with the USB port output circuit, and the DC power supply of exportable 5V, 500mA is chargings such as the digital product that connects by USB interface or mobile phone.In the utility model, described storage battery also can directly charge for external storage battery output DC source by the battery power control circuit.Therefore, the utility model has further satisfied the DC charging needs of mobile device.
Description of drawings
Fig. 1 is the general structure schematic diagram of the Portable AC power supply based on storage battery described in the utility model;
Fig. 2 is the theory diagram of the syllogic charging circuit of the Portable AC power supply based on storage battery described in the utility model;
Fig. 3 is the theory diagram of the direct current of the Portable AC power supply based on storage battery described in the utility model to ac conversion circuit.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
As shown in Figure 1, the Portable AC power supply based on storage battery 30 described in the utility model comprises the syllogic charging circuit 10 that is connected respectively with outside lead acid accumulator 30 and direct current to ac conversion circuit 20.When described syllogic charging circuit 10 was connected with the external communication electrical network, exportable rectifier power source was described storage battery 30 chargings; When not being connected with the external communication electrical network, the low-voltage dc voltage of described storage battery 30 is exported to ac conversion circuit 20 conversion backs through described direct current, for external electric equipment provides AC power.
The present invention also comprises an alternating current and transducer commutation circuit 40, and it cuts off described direct current to being connected of ac conversion circuit 20 and external equipment when being connected with the external communication electrical network, directly export external ac power source and power; And when not having external AC power supply or external AC power supply power down, the input of this alternating current and transducer commutation circuit 40, switch to the output of described direct current, provide alternating voltage to ac conversion circuit 20 to external electric equipment by described direct current to ac conversion circuit 20.
Described syllogic charging circuit 10, direct current also are connected with a MCU control circuit 50 respectively to ac conversion circuit 20 and described alternating current and transducer commutation circuit 40, and realize the powered operation of above-mentioned alternating current under its control.This MCU control circuit 50 also is connected with condition indication circuit 60, charges or the process of Alternating Current Power Supply shows, perhaps makes alarm when fault takes place.
Cooperation is referring to Fig. 1, shown in Figure 2, described syllogic charging circuit 10, be disposed with input filter circuit 11, rectification circuit 12 and half-bridge reduction voltage circuit 13: described input filter circuit 11 is EMI circuit, it is connected with described external communication electrical network, filtering is by the various interference signals of electrical network input, and prevents that voltage distortions such as high frequency that power switch circuit forms from disturbing and scurry electrical network.Described rectification circuit 12 exports described half-bridge reduction voltage circuit 13 to after the external communication voltage transitions is become high-voltage dc voltage, carries out the direct voltage conversion of high pressure to low pressure.
Be connected with described MCU control circuit 50 and under the pwm signal control of its output, the low-voltage dc voltage of described half-bridge reduction voltage circuit 13 output conversion back fluctuations is described storage battery 30 chargings that are connected.In as different charging process such as constant current, constant voltage or floating charge, described MCU control circuit 50 detects the charged state of storage battery 30 in real time, and changes the pwm signal that it exports half-bridge reduction voltage circuit 13 to this, realizes charging control.Condition indication circuit 60 monitoring displaies of this charging process by being connected with described MCU control circuit 50.
Cooperation is referring to Fig. 1, shown in Figure 3, and described direct current is provided with prime DC voltage booster circuit 21 and connected back level direct current to AC transform circuit 22 to ac conversion circuit 20.Described prime DC voltage booster circuit 21 is connected with described storage battery 30, and the low-voltage dc voltage that storage battery 30 is exported is converted to high-voltage dc voltage, exports after AC transform circuit 22 is converted into High AC voltage via a described back level direct current again.
Concrete, by described MCU control circuit 50 output pwm signals, drive the push-pull circuit that six MOSFET pipes are formed, promote three high frequency transformers and carry out boost in voltage; The high frequency voltage of its output obtains the DC power supply of high pressure after full-bridge rectification, promptly described prime DC voltage booster circuit 21.
Described back level direct current further comprises post-stage drive circuit 221 and connected full bridge inverter 222 to AC transform circuit 22.The high-voltage DC power supply of described prime DC voltage booster circuit 21 outputs exports described full bridge inverter 222 to after stable through FEEDBACK CONTROL.Described post-stage drive circuit 221 is pwm power drive circuits, and its control contains the described full bridge inverter 222 of four MOSFET pipes, and this high-voltage DC power supply conversion is output as suitable high-voltage ac power.
In addition; described prime DC voltage booster circuit 21 also comprises fault secure circuit 211, when unusual condition takes place, can stop the progress of work of described direct current to ac conversion circuit 20; and by MCU control circuit 50 output alarm signals, output shows on condition indication circuit 60.
Described fault secure circuit 211 starts, and by the unusual condition that described condition indication circuit 60 is indicated, comprises storage battery 30 undertensions, and prompting needs to change battery and maybe needs battery is charged; Perhaps, storage battery 30 overtensions, prompting checks whether battery mates; Perhaps, inversion conversion work overheat protector, environment for use or fan inside etc. are checked in alerting; Perhaps, output has the situation of short circuit or overcurrent to exist.
Described MCU control circuit 50 is provided with some PWM drive circuits, and its corresponding output pwm signal controls described syllogic charging circuit 10 respectively and direct current is worked to ac conversion circuit 20.Described MCU control circuit 50 also is provided with single-chip microcomputer minimization system circuit, above-mentioned external AC net voltage, charging voltage and current, storage battery 30 voltage condition, power output etc. are detected in real time, and detection feedback information is carried out the adjustment of drive control signal to the PWM drive circuit.This single-chip microcomputer minimization system circuit is also controlled 60 pairs of various states of described condition indication circuit and is intuitively shown.Described condition indication circuit 60 carries out state and shows by lighting different LED lamps, and is provided with alarm when fault takes place such as buzzer.
The utility model also can be provided with draught fan control circuit, temperature sensor; it is connected with described MCU control circuit 50 respectively; carry out the real-time detection of fan condition, system works temperature by described MCU control circuit 50, and state of a control indicating circuit 60 shows the realization overheat protector in real time.
In addition, the utility model also is provided with a USB port output circuit 70, it is connected with described MCU control circuit 50 and controlled by it, and the low pressure, the electric current of 500mA of output 5V are for being connected chargings such as digital product on the utility model or mobile phone by USB interface.
The utility model also can be provided with battery power control circuit 80, and it is connected with described storage battery 30, is external storage battery output DC source.
In sum, the utility model provides a kind of Portable AC power supply of external storage battery, and it is under the control of MCU control circuit, when described syllogic charging circuit is connected with the external communication electrical network, directly be the power consumption equipment power supply while, exportable direct voltage is described charge in batteries.When it was not connected with the external communication electrical network, the low-voltage dc voltage of described storage battery, was communicated with external electric equipment with the transducer commutation circuit by alternating current to ac conversion circuit conversion back output through described direct current, realizes the power supply of alternating voltage.
The process of this charging or Alternating Current Power Supply is also detected in real time by described MCU control circuit, and shows by condition indication circuit, and makes alarm when fault takes place.Therefore, the utility model is as portable AC power, and the alternating current that can satisfy existing mobile device uses needs.
The utility model also is provided with the USB port output circuit, and the DC power supply of exportable 5V, 500mA is chargings such as the digital product that connects by USB interface or mobile phone.In the utility model, described storage battery also can directly charge for external storage battery output DC source by the battery power control circuit.Therefore, the utility model has further satisfied the direct current electricity consumption needs of mobile device.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be conspicuous.Therefore, protection range of the present utility model should be limited to the appended claims.

Claims (10)

1. the Portable AC power supply of an external storage battery is characterized in that, comprises the syllogic charging circuit (10) that is connected respectively with outside storage battery (30) and direct current to ac conversion circuit (20);
When described syllogic charging circuit (10) when being connected with external ac power source, exportable direct voltage is described storage battery (30) charging;
When described syllogic charging circuit (10) is not connected with external ac power source, the direct voltage of described storage battery (30) output, export after ac conversion circuit (20) is converted to alternating voltage via described direct current, for external electric equipment is carried out Alternating Current Power Supply.
2. the Portable AC power supply of external storage battery as claimed in claim 1, it is characterized in that, also comprise an alternating current and transducer commutation circuit (40), it is when being connected with external ac power source, cut off described direct current to being connected of ac conversion circuit (20) and external equipment, directly export external ac power source and power;
And when not being connected with described external ac power source, the input of this alternating current and transducer commutation circuit (40), switching is connected to the output of described direct current to ac conversion circuit (20), provides alternating voltage to ac conversion circuit (20) to external electric equipment by described direct current.
3. the Portable AC power supply of external storage battery as claimed in claim 2 is characterized in that, also comprises a MCU control circuit; Described syllogic charging circuit (10), direct current be to ac conversion circuit (20) and described alternating current and transducer commutation circuit (40), is connected with described MCU control circuit respectively and is embodied as the DC charging of storage battery (30) or is the Alternating Current Power Supply of external electric equipment under its control.
4. the Portable AC power supply of external storage battery as claimed in claim 3 is characterized in that, described syllogic charging circuit (10) is disposed with input filter circuit (11), rectification circuit (12) and half-bridge reduction voltage circuit (13);
Described input filter circuit (11), it is connected with the external communication electrical network, and the interference signal that produces when outside alternating voltage is imported is carried out filtering;
Described rectification circuit (12) becomes high-voltage dc voltage with the external communication voltage transitions;
Described half-bridge reduction voltage circuit (13) converts high-voltage dc voltage to low-voltage dc voltage;
Described half-bridge reduction voltage circuit (13) also is connected with described MCU control circuit, exports low-voltage dc voltage to described storage battery (30) and charge under its control.
5. the Portable AC power supply of external storage battery as claimed in claim 3 is characterized in that, described direct current is provided with prime DC voltage booster circuit (21) and connected back level direct current to AC transform circuit (22) to ac conversion circuit (20);
Described prime DC voltage booster circuit (21) is connected with described storage battery (30), and the low-voltage dc voltage that storage battery (30) is exported is converted to high-voltage dc voltage;
Described prime DC voltage booster circuit (21) also comprises fault secure circuit (211), when unusual condition takes place, can stop the progress of work of described direct current to ac conversion circuit (20), and by MCU control circuit output alarm signal.
6. the Portable AC power supply of external storage battery as claimed in claim 5 is characterized in that, described back level direct current comprises post-stage drive circuit and connected full bridge inverter (222) to AC transform circuit (22);
Described post-stage drive circuit is connected with described MCU control circuit, and works under its control;
Described full bridge inverter (222) is driven by described post-stage drive circuit, with the high-voltage DC power supply of described prime DC voltage booster circuit (21) conversion output, exports after further being converted to high-voltage ac power.
7. as the Portable AC power supply of claim 3 or 6 described external storage batterys, it is characterized in that, described MCU control circuit is provided with some PWM drive circuits, and its corresponding output pwm signal is controlled described syllogic charging circuit (10) and direct current respectively to ac conversion circuit (20);
Described MCU control circuit also is provided with single-chip microcomputer minimization system circuit, the state of described DC charging or Alternating Current Power Supply is detected, and detection feedback information to described PWM drive circuit carries out the adjustment of drive control signal.
8. the Portable AC power supply of external storage battery as claimed in claim 3, it is characterized in that, also comprise a condition indication circuit (60), it is connected with described MCU control circuit, the state that carries out DC charging or Alternating Current Power Supply shows, perhaps makes alarm when fault takes place.
9. the Portable AC power supply of external storage battery as claimed in claim 3, it is characterized in that, also be provided with USB port output circuit (70), it is connected with described MCU control circuit and controlled by it, for the equipment that is connected by USB interface on the described USB port output circuit (70) provides DC power supply.
10. the Portable AC power supply of external storage battery as claimed in claim 3, it is characterized in that, also be provided with battery power control circuit (80), it is connected with described storage battery (30), for the storage battery that is connected on this battery power control circuit (80) output outward provides DC power supply.
CN2010206926735U 2010-12-31 2010-12-31 Portable alternating current power supply externally connected with storage battery Expired - Fee Related CN201956730U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013159428A1 (en) * 2012-04-28 2013-10-31 中兴通讯股份有限公司 Connection apparatus, mobile device and display device
CN104300641A (en) * 2014-10-28 2015-01-21 吴圣铎 Charging and emergency dual-purpose mobile power source of USB device
CN106483431A (en) * 2016-08-31 2017-03-08 济南朗宁电力科技有限公司 A kind of DL high-potting dedicated operations case
CN109217706A (en) * 2018-11-01 2019-01-15 深圳市新泰胜电子科技有限公司 A kind of Portable inverter power source
CN110933346A (en) * 2019-11-26 2020-03-27 广州长嘉电子有限公司 Television power supply method and system based on uninterruptible power supply
CN111442174A (en) * 2020-04-03 2020-07-24 江苏江海润液设备有限公司 Frequency conversion control lubricating oil system of alternating-current oil pump
CN112290668A (en) * 2020-11-06 2021-01-29 宇能电气有限公司 Open-air portable hybrid power source power supply system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013159428A1 (en) * 2012-04-28 2013-10-31 中兴通讯股份有限公司 Connection apparatus, mobile device and display device
CN104300641A (en) * 2014-10-28 2015-01-21 吴圣铎 Charging and emergency dual-purpose mobile power source of USB device
CN106483431A (en) * 2016-08-31 2017-03-08 济南朗宁电力科技有限公司 A kind of DL high-potting dedicated operations case
CN109217706A (en) * 2018-11-01 2019-01-15 深圳市新泰胜电子科技有限公司 A kind of Portable inverter power source
CN110933346A (en) * 2019-11-26 2020-03-27 广州长嘉电子有限公司 Television power supply method and system based on uninterruptible power supply
CN111442174A (en) * 2020-04-03 2020-07-24 江苏江海润液设备有限公司 Frequency conversion control lubricating oil system of alternating-current oil pump
WO2021196829A1 (en) * 2020-04-03 2021-10-07 江苏江海润液设备有限公司 Variable-frequency controlled lubricating oil system for alternating-current oil pump
CN112290668A (en) * 2020-11-06 2021-01-29 宇能电气有限公司 Open-air portable hybrid power source power supply system

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GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: SHANGHAI GUANGWEI ELECTRIC CO., LTD.

Free format text: FORMER OWNER: SHANGHAI GUANGWEITUOPU ELECTRIC POWER CO., LTD.

Effective date: 20150529

Free format text: FORMER OWNER: SHANGHAI GUANGWEI ELECTRIC CO., LTD. SHANGHAI GUANGWEI ELECTRIC + TOOLS CO., LTD.

Effective date: 20150529

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150529

Address after: 200241, No. 3, No. 4916, Lane 18, Hongmei South Road, Shanghai

Patentee after: Shanghai Guangwei Electric Co., Ltd.

Address before: 200241 Minhang District, Wu Long Road, No. 6200, Shanghai

Patentee before: Shanghai Guangweituopu Electric Power Co., Ltd.

Patentee before: Shanghai Guangwei Electric Co., Ltd.

Patentee before: Shanghai Guangwei Electric & Tools Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110831

Termination date: 20171231